Initial commit

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/.gitattributes

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+* text=auto !eol svneol=native#text/plain
+*.gitattributes text svneol=native#text/plain
+
+# Scriptish formats
+*.bat        text svneol=native#text/plain
+*.bsh        text svneol=native#text/x-beanshell
+*.cgi        text svneol=native#text/plain
+*.cmd        text svneol=native#text/plain
+*.js         text svneol=native#text/javascript
+*.php        text svneol=native#text/x-php
+*.pl         text svneol=native#text/x-perl
+*.pm         text svneol=native#text/x-perl
+*.py         text svneol=native#text/x-python
+*.sh         eol=lf svneol=LF#text/x-sh
+configure    eol=lf svneol=LF#text/x-sh
+
+# Image formats
+*.bmp        binary svneol=unset#image/bmp
+*.gif        binary svneol=unset#image/gif
+*.ico        binary svneol=unset#image/ico
+*.jpeg       binary svneol=unset#image/jpeg
+*.jpg        binary svneol=unset#image/jpeg
+*.png        binary svneol=unset#image/png
+*.tif        binary svneol=unset#image/tiff
+*.tiff       binary svneol=unset#image/tiff
+*.svg        text svneol=native#image/svg%2Bxml
+
+# Data formats
+*.pdf        binary svneol=unset#application/pdf
+*.avi        binary svneol=unset#video/avi
+*.doc        binary svneol=unset#application/msword
+*.dsp        text svneol=crlf#text/plain
+*.dsw        text svneol=crlf#text/plain
+*.eps        binary svneol=unset#application/postscript
+*.gz         binary svneol=unset#application/gzip
+*.mov        binary svneol=unset#video/quicktime
+*.mp3        binary svneol=unset#audio/mpeg
+*.ppt        binary svneol=unset#application/vnd.ms-powerpoint
+*.ps         binary svneol=unset#application/postscript
+*.psd        binary svneol=unset#application/photoshop
+*.rdf        binary svneol=unset#text/rdf
+*.rss        text svneol=unset#text/xml
+*.rtf        binary svneol=unset#text/rtf
+*.sln        text svneol=native#text/plain
+*.swf        binary svneol=unset#application/x-shockwave-flash
+*.tgz        binary svneol=unset#application/gzip
+*.vcproj     text svneol=native#text/xml
+*.vcxproj    text svneol=native#text/xml
+*.vsprops    text svneol=native#text/xml
+*.wav        binary svneol=unset#audio/wav
+*.xls        binary svneol=unset#application/vnd.ms-excel
+*.zip        binary svneol=unset#application/zip
+
+# Text formats
+.htaccess    text svneol=native#text/plain
+*.bbk        text svneol=native#text/xml
+*.cmake      text svneol=native#text/plain
+*.css        text svneol=native#text/css
+*.dtd        text svneol=native#text/xml
+*.htm        text svneol=native#text/html
+*.html       text svneol=native#text/html
+*.ini        text svneol=native#text/plain
+*.log        text svneol=native#text/plain
+*.mak        text svneol=native#text/plain
+*.qbk        text svneol=native#text/plain
+*.rst        text svneol=native#text/plain
+*.sql        text svneol=native#text/x-sql
+*.txt        text svneol=native#text/plain
+*.xhtml      text svneol=native#text/xhtml%2Bxml
+*.xml        text svneol=native#text/xml
+*.xsd        text svneol=native#text/xml
+*.xsl        text svneol=native#text/xml
+*.xslt       text svneol=native#text/xml
+*.xul        text svneol=native#text/xul
+*.yml        text svneol=native#text/plain
+boost-no-inspect text svneol=native#text/plain
+CHANGES      text svneol=native#text/plain
+COPYING      text svneol=native#text/plain
+INSTALL      text svneol=native#text/plain
+Jamfile      text svneol=native#text/plain
+Jamroot      text svneol=native#text/plain
+Jamfile.v2   text svneol=native#text/plain
+Jamrules     text svneol=native#text/plain
+Makefile*    text svneol=native#text/plain
+README       text svneol=native#text/plain
+TODO         text svneol=native#text/plain
+
+# Code formats
+*.c          text svneol=native#text/plain
+*.cpp        text svneol=native#text/plain
+*.h          text svneol=native#text/plain
+*.hpp        text svneol=native#text/plain
+*.ipp        text svneol=native#text/plain
+*.tpp        text svneol=native#text/plain
+*.jam        text svneol=native#text/plain
+*.java       text svneol=native#text/plain

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/.github/workflows/ci.yml

@@ -0,0 +1,682 @@
+# Copyright 2020-2021 Peter Dimov
+# Copyright 2021 Andrey Semashev
+#
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE_1_0.txt or copy at http://boost.org/LICENSE_1_0.txt)
+
+name: CI
+
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+      - develop
+      - feature/**
+
+env:
+  GIT_FETCH_JOBS: 8
+  NET_RETRY_COUNT: 5
+  DEFAULT_BUILD_VARIANT: debug,release
+
+jobs:
+  posix:
+    defaults:
+      run:
+        shell: bash
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          # Linux, gcc
+          - toolset: gcc-4.4
+            cxxstd: "98,0x"
+            os: ubuntu-20.04
+            container: ubuntu:16.04
+            install:
+              - g++-4.4
+            sources:
+              - "ppa:ubuntu-toolchain-r/test"
+          - toolset: gcc-4.6
+            cxxstd: "03,0x"
+            os: ubuntu-20.04
+            container: ubuntu:16.04
+            install:
+              - g++-4.6
+            sources:
+              - "ppa:ubuntu-toolchain-r/test"
+          - toolset: gcc-4.7
+            cxxstd: "03,11"
+            os: ubuntu-20.04
+            container: ubuntu:16.04
+            install:
+              - g++-4.7
+          - toolset: gcc-4.8
+            cxxstd: "03,11"
+            os: ubuntu-18.04
+            install:
+              - g++-4.8
+          - toolset: gcc-4.9
+            cxxstd: "03,11"
+            os: ubuntu-20.04
+            container: ubuntu:16.04
+            install:
+              - g++-4.9
+          - toolset: gcc-5
+            cxxstd: "03,11,14,1z"
+            os: ubuntu-20.04
+            container: ubuntu:16.04
+            install:
+              - g++-5
+          - toolset: gcc-6
+            cxxstd: "03,11,14,1z"
+            os: ubuntu-18.04
+            install:
+              - g++-6
+          - toolset: gcc-7
+            cxxstd: "03,11,14,17"
+            os: ubuntu-18.04
+            install:
+              - g++-7
+          - toolset: gcc-8
+            cxxstd: "03,11,14,17,2a"
+            os: ubuntu-18.04
+            install:
+              - g++-8
+          - toolset: gcc-9
+            cxxstd: "03,11,14,17,2a"
+            os: ubuntu-18.04
+            install:
+              - g++-9
+          - toolset: gcc-10
+            cxxstd: "03,11,14,17,20"
+            os: ubuntu-20.04
+            install:
+              - g++-10
+          - toolset: gcc-11
+            cxxstd: "03,11,14,17,20"
+            os: ubuntu-20.04
+            install:
+              - g++-11
+            sources:
+              - "ppa:ubuntu-toolchain-r/test"
+          - name: UBSAN
+            toolset: gcc-11
+            cxxstd: "03,11,14,17,20"
+            ubsan: 1
+            os: ubuntu-20.04
+            install:
+              - g++-11
+            sources:
+              - "ppa:ubuntu-toolchain-r/test"
+
+          # Linux, clang
+          - toolset: clang
+            compiler: clang++-3.5
+            cxxstd: "03,11"
+            os: ubuntu-20.04
+            container: ubuntu:16.04
+            install:
+              - clang-3.5
+          - toolset: clang
+            compiler: clang++-3.6
+            cxxstd: "03,11,14"
+            os: ubuntu-20.04
+            container: ubuntu:16.04
+            install:
+              - clang-3.6
+          - toolset: clang
+            compiler: clang++-3.7
+            cxxstd: "03,11,14"
+            os: ubuntu-20.04
+            container: ubuntu:16.04
+            install:
+              - clang-3.7
+          - toolset: clang
+            compiler: clang++-3.8
+            cxxstd: "03,11,14"
+            os: ubuntu-20.04
+            container: ubuntu:16.04
+            install:
+              - clang-3.8
+          - toolset: clang
+            compiler: clang++-3.9
+            cxxstd: "03,11,14"
+            os: ubuntu-18.04
+            install:
+              - clang-3.9
+          - toolset: clang
+            compiler: clang++-4.0
+            cxxstd: "03,11,14"
+            os: ubuntu-18.04
+            install:
+              - clang-4.0
+          - toolset: clang
+            compiler: clang++-5.0
+            cxxstd: "03,11,14,1z"
+            os: ubuntu-18.04
+            install:
+              - clang-5.0
+          - toolset: clang
+            compiler: clang++-6.0
+            cxxstd: "03,11,14,17"
+            os: ubuntu-18.04
+            install:
+              - clang-6.0
+          - toolset: clang
+            compiler: clang++-7
+            cxxstd: "03,11,14,17"
+            os: ubuntu-18.04
+            install:
+              - clang-7
+          # Note: clang-8 does not fully support C++20, so it is not compatible with libstdc++-8 in this mode
+          - toolset: clang
+            compiler: clang++-8
+            cxxstd: "03,11,14,17,2a"
+            os: ubuntu-18.04
+            install:
+              - clang-8
+              - g++-7
+            gcc_toolchain: 7
+          - toolset: clang
+            compiler: clang++-9
+            cxxstd: "03,11,14,17,2a"
+            os: ubuntu-20.04
+            install:
+              - clang-9
+          - toolset: clang
+            compiler: clang++-10
+            cxxstd: "03,11,14,17,20"
+            os: ubuntu-20.04
+            install:
+              - clang-10
+          - toolset: clang
+            compiler: clang++-11
+            cxxstd: "03,11,14,17,20"
+            os: ubuntu-20.04
+            install:
+              - clang-11
+          - toolset: clang
+            compiler: clang++-12
+            cxxstd: "03,11,14,17,20"
+            os: ubuntu-20.04
+            install:
+              - clang-12
+          - toolset: clang
+            compiler: clang++-12
+            cxxstd: "03,11,14,17,20"
+            cxxflags: -stdlib=libc++
+            linkflags: -stdlib=libc++
+            os: ubuntu-20.04
+            install:
+              - clang-12
+              - libc++-12-dev
+              - libc++abi-12-dev
+          - toolset: clang
+            compiler: clang++-13
+            cxxstd: "03,11,14,17,20"
+            os: ubuntu-20.04
+            install:
+              - clang-13
+            sources:
+              - "deb http://apt.llvm.org/focal/ llvm-toolchain-focal-13 main"
+            source_keys:
+              - "https://apt.llvm.org/llvm-snapshot.gpg.key"
+          - toolset: clang
+            compiler: clang++-13
+            cxxstd: "03,11,14,17,20"
+            os: ubuntu-20.04
+            install:
+              - clang-13
+              - libc++-13-dev
+              - libc++abi-13-dev
+            sources:
+              - "deb http://apt.llvm.org/focal/ llvm-toolchain-focal-13 main"
+            source_keys:
+              - "https://apt.llvm.org/llvm-snapshot.gpg.key"
+            cxxflags: -stdlib=libc++
+            linkflags: -stdlib=libc++
+          - name: UBSAN
+            toolset: clang
+            compiler: clang++-12
+            cxxstd: "03,11,14,17,20"
+            cxxflags: -stdlib=libc++
+            linkflags: -stdlib=libc++
+            ubsan: 1
+            os: ubuntu-20.04
+            install:
+              - clang-12
+              - libc++-12-dev
+              - libc++abi-12-dev
+
+          - toolset: clang
+            cxxstd: "03,11,14,17,2a"
+            os: macos-10.15
+
+    timeout-minutes: 120
+    runs-on: ${{matrix.os}}
+    container: ${{matrix.container}}
+
+    steps:
+      - name: Setup environment
+        run: |
+            if [ -f "/etc/debian_version" ]
+            then
+                echo "DEBIAN_FRONTEND=noninteractive" >> $GITHUB_ENV
+                export DEBIAN_FRONTEND=noninteractive
+            fi
+            if [ -n "${{matrix.container}}" ]
+            then
+                echo "GHA_CONTAINER=${{matrix.container}}" >> $GITHUB_ENV
+                if [ -f "/etc/debian_version" ]
+                then
+                    apt-get -o Acquire::Retries=$NET_RETRY_COUNT update
+                    apt-get -o Acquire::Retries=$NET_RETRY_COUNT install -y sudo software-properties-common tzdata wget curl apt-transport-https ca-certificates make build-essential g++ python python3 perl git cmake
+                fi
+            fi
+            git config --global pack.threads 0
+
+      - uses: actions/checkout@v2
+
+      - name: Install packages
+        if: matrix.install
+        run: |
+            declare -a SOURCE_KEYS SOURCES
+            if [ -n "${{join(matrix.source_keys, ' ')}}" ]
+            then
+                SOURCE_KEYS=("${{join(matrix.source_keys, '" "')}}")
+            fi
+            if [ -n "${{join(matrix.sources, ' ')}}" ]
+            then
+                SOURCES=("${{join(matrix.sources, '" "')}}")
+            fi
+            for key in "${SOURCE_KEYS[@]}"
+            do
+                for i in {1..$NET_RETRY_COUNT}
+                do
+                    echo "Adding key: $key"
+                    wget -O - "$key" | sudo apt-key add - && break || sleep 2
+                done
+            done
+            if [ ${#SOURCES[@]} -gt 0 ]
+            then
+                APT_ADD_REPO_COMMON_ARGS=("-y")
+                APT_ADD_REPO_SUPPORTED_ARGS="$(apt-add-repository --help | perl -ne 'if (/^\s*-n/) { print "n"; } elsif (/^\s*-P/) { print "P"; } elsif (/^\s*-S/) { print "S"; } elsif (/^\s*-U/) { print "U"; }')"
+                if [ -n "$APT_ADD_REPO_SUPPORTED_ARGS" -a -z "${APT_ADD_REPO_SUPPORTED_ARGS##*n*}" ]
+                then
+                    APT_ADD_REPO_COMMON_ARGS+=("-n")
+                fi
+                APT_ADD_REPO_HAS_SOURCE_ARGS="$([ -n "$APT_ADD_REPO_SUPPORTED_ARGS" -a -z "${APT_ADD_REPO_SUPPORTED_ARGS##*P*}" -a -z "${APT_ADD_REPO_SUPPORTED_ARGS##*S*}" -a -z "${APT_ADD_REPO_SUPPORTED_ARGS##*U*}" ] && echo 1 || echo 0)"
+                for source in "${SOURCES[@]}"
+                do
+                    for i in {1..$NET_RETRY_COUNT}
+                    do
+                        APT_ADD_REPO_ARGS=("${APT_ADD_REPO_COMMON_ARGS[@]}")
+                        if [ $APT_ADD_REPO_HAS_SOURCE_ARGS -ne 0 ]
+                        then
+                            case "$source" in
+                            "ppa:"*)
+                                APT_ADD_REPO_ARGS+=("-P")
+                                ;;
+                            "deb "*)
+                                APT_ADD_REPO_ARGS+=("-S")
+                                ;;
+                            *)
+                                APT_ADD_REPO_ARGS+=("-U")
+                                ;;
+                            esac
+                        fi
+                        APT_ADD_REPO_ARGS+=("$source")
+                        echo "apt-add-repository ${APT_ADD_REPO_ARGS[@]}"
+                        sudo -E apt-add-repository "${APT_ADD_REPO_ARGS[@]}" && break || sleep 2
+                    done
+                done
+            fi
+            sudo apt-get -o Acquire::Retries=$NET_RETRY_COUNT update
+            sudo apt-get -o Acquire::Retries=$NET_RETRY_COUNT install -y ${{join(matrix.install, ' ')}}
+
+      - name: Setup GCC Toolchain
+        if: matrix.gcc_toolchain
+        run: |
+            GCC_TOOLCHAIN_ROOT="$HOME/gcc-toolchain"
+            echo "GCC_TOOLCHAIN_ROOT=\"$GCC_TOOLCHAIN_ROOT\"" >> $GITHUB_ENV
+            MULTIARCH_TRIPLET="$(dpkg-architecture -qDEB_HOST_MULTIARCH)"
+            mkdir -p "$GCC_TOOLCHAIN_ROOT"
+            ln -s /usr/include "$GCC_TOOLCHAIN_ROOT/include"
+            ln -s /usr/bin "$GCC_TOOLCHAIN_ROOT/bin"
+            mkdir -p "$GCC_TOOLCHAIN_ROOT/lib/gcc/$MULTIARCH_TRIPLET"
+            ln -s "/usr/lib/gcc/$MULTIARCH_TRIPLET/${{matrix.gcc_toolchain}}" "$GCC_TOOLCHAIN_ROOT/lib/gcc/$MULTIARCH_TRIPLET/${{matrix.gcc_toolchain}}"
+
+      - name: Setup Boost
+        run: |
+            echo GITHUB_REPOSITORY: $GITHUB_REPOSITORY
+            LIBRARY=${GITHUB_REPOSITORY#*/}
+            echo LIBRARY: $LIBRARY
+            echo "LIBRARY=$LIBRARY" >> $GITHUB_ENV
+            echo GITHUB_BASE_REF: $GITHUB_BASE_REF
+            echo GITHUB_REF: $GITHUB_REF
+            REF=${GITHUB_BASE_REF:-$GITHUB_REF}
+            REF=${REF#refs/heads/}
+            echo REF: $REF
+            BOOST_BRANCH=develop && [ "$REF" = "master" ] && BOOST_BRANCH=master || true
+            echo BOOST_BRANCH: $BOOST_BRANCH
+            BUILD_JOBS=$((nproc || sysctl -n hw.ncpu) 2> /dev/null)
+            echo "BUILD_JOBS=$BUILD_JOBS" >> $GITHUB_ENV
+            echo "CMAKE_BUILD_PARALLEL_LEVEL=$BUILD_JOBS" >> $GITHUB_ENV
+            GIT_VERSION="$(git --version | sed -e 's/git version //')"
+            GIT_HAS_JOBS=1
+            if [ -f "/etc/debian_version" ]
+            then
+                if $(dpkg --compare-versions "$GIT_VERSION" lt 2.8.0)
+                then
+                    GIT_HAS_JOBS=0
+                fi
+            else
+                declare -a GIT_VER=(${GIT_VERSION//./ })
+                declare -a GIT_MIN_VER=(2 8 0)
+                for ((i=0; i<${#GIT_VER[@]}; i++))
+                do
+                    if [ -z "${GIT_MIN_VER[i]}" ]
+                    then
+                        GIT_MIN_VER[i]=0
+                    fi
+                    if [ "${GIT_VER[i]}" -lt "${GIT_MIN_VER[i]}" ]
+                    then
+                        GIT_HAS_JOBS=0
+                        break
+                    fi
+                done
+            fi
+            if [ "$GIT_HAS_JOBS" -ne 0 ]
+            then
+                GIT_ARGS="--jobs $GIT_FETCH_JOBS"
+            fi
+            cd ..
+            git clone -b "$BOOST_BRANCH" --depth 1 "https://github.com/boostorg/boost.git" "boost-root"
+            cd boost-root
+            mkdir -p libs/$LIBRARY
+            cp -r $GITHUB_WORKSPACE/* libs/$LIBRARY
+            git submodule init tools/boost_install
+            git submodule init libs/headers
+            git submodule init tools/build
+            git submodule init tools/cmake
+            git submodule init libs/assert
+            git submodule init libs/config
+            git submodule init libs/static_assert
+            git submodule init libs/throw_exception
+            git submodule init libs/type_traits
+            git submodule init libs/utility
+            git submodule init libs/io
+            git submodule update $GIT_ARGS
+            ./bootstrap.sh
+            ./b2 headers
+            if [ -n "${{matrix.compiler}}" -o -n "$GCC_TOOLCHAIN_ROOT" ]
+            then
+                echo -n "using ${{matrix.toolset}} : : ${{matrix.compiler}}" > ~/user-config.jam
+                if [ -n "$GCC_TOOLCHAIN_ROOT" ]
+                then
+                    echo -n " : <compileflags>\"--gcc-toolchain=$GCC_TOOLCHAIN_ROOT\" <linkflags>\"--gcc-toolchain=$GCC_TOOLCHAIN_ROOT\"" >> ~/user-config.jam
+                fi
+                echo " ;" >> ~/user-config.jam
+            fi
+
+      - name: Run tests
+        if: matrix.cmake_tests == ''
+        run: |
+            cd ../boost-root
+            B2_ARGS=("-j" "$BUILD_JOBS" "toolset=${{matrix.toolset}}" "cxxstd=${{matrix.cxxstd}}")
+            if [ -n "${{matrix.build_variant}}" ]
+            then
+                B2_ARGS+=("variant=${{matrix.build_variant}}")
+            else
+                B2_ARGS+=("variant=$DEFAULT_BUILD_VARIANT")
+            fi
+            if [ -n "${{matrix.threading}}" ]
+            then
+                B2_ARGS+=("threading=${{matrix.threading}}")
+            fi
+            if [ -n "${{matrix.ubsan}}" ]
+            then
+                export UBSAN_OPTIONS="print_stacktrace=1"
+                B2_ARGS+=("cxxflags=-fsanitize=undefined -fno-sanitize-recover=undefined" "linkflags=-fsanitize=undefined -fuse-ld=gold" "define=UBSAN=1" "debug-symbols=on" "visibility=global")
+            fi
+            if [ -n "${{matrix.cxxflags}}" ]
+            then
+                B2_ARGS+=("cxxflags=${{matrix.cxxflags}}")
+            fi
+            if [ -n "${{matrix.linkflags}}" ]
+            then
+                B2_ARGS+=("linkflags=${{matrix.linkflags}}")
+            fi
+            B2_ARGS+=("libs/$LIBRARY/test")
+            ./b2 "${B2_ARGS[@]}"
+
+  windows:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - toolset: msvc-14.0
+            cxxstd: "14"
+            addrmd: 32,64
+            os: windows-2019
+          - toolset: msvc-14.1
+            cxxstd: "14,17,latest"
+            addrmd: 32,64
+            os: windows-2016
+          - toolset: msvc-14.2
+            cxxstd: "14,17,20,latest"
+            addrmd: 32,64
+            os: windows-2019
+          - toolset: msvc-14.3
+            cxxstd: "14,17,20,latest"
+            addrmd: 32,64
+            os: windows-2022
+          - toolset: clang-win
+            cxxstd: "14,17,latest"
+            addrmd: 32,64
+            os: windows-2022
+          - toolset: gcc
+            cxxstd: "03,11,14,17,2a"
+            addrmd: 64
+            os: windows-2019
+
+    runs-on: ${{matrix.os}}
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Setup Boost
+        shell: cmd
+        run: |
+            echo GITHUB_REPOSITORY: %GITHUB_REPOSITORY%
+            for /f %%i in ("%GITHUB_REPOSITORY%") do set LIBRARY=%%~nxi
+            echo LIBRARY: %LIBRARY%
+            echo LIBRARY=%LIBRARY%>>%GITHUB_ENV%
+            echo GITHUB_BASE_REF: %GITHUB_BASE_REF%
+            echo GITHUB_REF: %GITHUB_REF%
+            if "%GITHUB_BASE_REF%" == "" set GITHUB_BASE_REF=%GITHUB_REF%
+            set BOOST_BRANCH=develop
+            for /f %%i in ("%GITHUB_BASE_REF%") do if "%%~nxi" == "master" set BOOST_BRANCH=master
+            echo BOOST_BRANCH: %BOOST_BRANCH%
+            cd ..
+            git clone -b %BOOST_BRANCH% --depth 1 https://github.com/boostorg/boost.git boost-root
+            cd boost-root
+            xcopy /s /e /q %GITHUB_WORKSPACE% libs\%LIBRARY%\
+            git submodule init tools/boost_install
+            git submodule init libs/headers
+            git submodule init tools/build
+            git submodule init tools/cmake
+            git submodule init libs/assert
+            git submodule init libs/config
+            git submodule init libs/static_assert
+            git submodule init libs/throw_exception
+            git submodule init libs/type_traits
+            git submodule init libs/utility
+            git submodule init libs/io
+            git submodule update --jobs %GIT_FETCH_JOBS%
+            cmd /c bootstrap
+            b2 -d0 headers
+
+      - name: Run tests
+        shell: cmd
+        run: |
+            cd ../boost-root
+            b2 -j %NUMBER_OF_PROCESSORS% libs/%LIBRARY%/test toolset=${{matrix.toolset}} cxxstd=${{matrix.cxxstd}} address-model=${{matrix.addrmd}} variant=debug,release embed-manifest-via=linker
+
+  posix-cmake-subdir:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - os: ubuntu-18.04
+          - os: ubuntu-20.04
+          - os: macos-10.15
+
+    runs-on: ${{matrix.os}}
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Install packages
+        if: matrix.install
+        run: sudo apt install ${{matrix.install}}
+
+      - name: Setup Boost
+        run: |
+          echo GITHUB_REPOSITORY: $GITHUB_REPOSITORY
+          LIBRARY=${GITHUB_REPOSITORY#*/}
+          echo LIBRARY: $LIBRARY
+          echo "LIBRARY=$LIBRARY" >> $GITHUB_ENV
+          echo GITHUB_BASE_REF: $GITHUB_BASE_REF
+          echo GITHUB_REF: $GITHUB_REF
+          REF=${GITHUB_BASE_REF:-$GITHUB_REF}
+          REF=${REF#refs/heads/}
+          echo REF: $REF
+          BOOST_BRANCH=develop && [ "$REF" == "master" ] && BOOST_BRANCH=master || true
+          echo BOOST_BRANCH: $BOOST_BRANCH
+          cd ..
+          git clone -b $BOOST_BRANCH --depth 1 https://github.com/boostorg/boost.git boost-root
+          cd boost-root
+          cp -r $GITHUB_WORKSPACE/* libs/$LIBRARY
+          git submodule update --init tools/boostdep
+          python tools/boostdep/depinst/depinst.py --git_args "--jobs 3" $LIBRARY
+
+      - name: Use library with add_subdirectory
+        run: |
+          cd ../boost-root/libs/$LIBRARY/test/cmake_subdir_test
+          mkdir __build__ && cd __build__
+          cmake ..
+          cmake --build .
+          ctest --output-on-failure --no-tests=error
+
+  posix-cmake-install:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - os: ubuntu-18.04
+          - os: ubuntu-20.04
+          - os: macos-10.15
+
+    runs-on: ${{matrix.os}}
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Install packages
+        if: matrix.install
+        run: sudo apt install ${{matrix.install}}
+
+      - name: Setup Boost
+        run: |
+          echo GITHUB_REPOSITORY: $GITHUB_REPOSITORY
+          LIBRARY=${GITHUB_REPOSITORY#*/}
+          echo LIBRARY: $LIBRARY
+          echo "LIBRARY=$LIBRARY" >> $GITHUB_ENV
+          echo GITHUB_BASE_REF: $GITHUB_BASE_REF
+          echo GITHUB_REF: $GITHUB_REF
+          REF=${GITHUB_BASE_REF:-$GITHUB_REF}
+          REF=${REF#refs/heads/}
+          echo REF: $REF
+          BOOST_BRANCH=develop && [ "$REF" == "master" ] && BOOST_BRANCH=master || true
+          echo BOOST_BRANCH: $BOOST_BRANCH
+          cd ..
+          git clone -b $BOOST_BRANCH --depth 1 https://github.com/boostorg/boost.git boost-root
+          cd boost-root
+          cp -r $GITHUB_WORKSPACE/* libs/$LIBRARY
+          git submodule update --init tools/boostdep
+          python tools/boostdep/depinst/depinst.py --git_args "--jobs 3" $LIBRARY
+
+      - name: Configure
+        run: |
+          cd ../boost-root
+          mkdir __build__ && cd __build__
+          cmake -DBOOST_INCLUDE_LIBRARIES=$LIBRARY -DCMAKE_INSTALL_PREFIX=~/.local ..
+
+      - name: Install
+        run: |
+          cd ../boost-root/__build__
+          cmake --build . --target install
+
+      - name: Use the installed library
+        run: |
+          cd ../boost-root/libs/$LIBRARY/test/cmake_install_test && mkdir __build__ && cd __build__
+          cmake -DCMAKE_INSTALL_PREFIX=~/.local ..
+          cmake --build .
+          ctest --output-on-failure --no-tests=error
+
+  posix-cmake-test:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - os: ubuntu-18.04
+          - os: ubuntu-20.04
+          - os: macos-10.15
+
+    runs-on: ${{matrix.os}}
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Install packages
+        if: matrix.install
+        run: sudo apt install ${{matrix.install}}
+
+      - name: Setup Boost
+        run: |
+          echo GITHUB_REPOSITORY: $GITHUB_REPOSITORY
+          LIBRARY=${GITHUB_REPOSITORY#*/}
+          echo LIBRARY: $LIBRARY
+          echo "LIBRARY=$LIBRARY" >> $GITHUB_ENV
+          echo GITHUB_BASE_REF: $GITHUB_BASE_REF
+          echo GITHUB_REF: $GITHUB_REF
+          REF=${GITHUB_BASE_REF:-$GITHUB_REF}
+          REF=${REF#refs/heads/}
+          echo REF: $REF
+          BOOST_BRANCH=develop && [ "$REF" == "master" ] && BOOST_BRANCH=master || true
+          echo BOOST_BRANCH: $BOOST_BRANCH
+          cd ..
+          git clone -b $BOOST_BRANCH --depth 1 https://github.com/boostorg/boost.git boost-root
+          cd boost-root
+          cp -r $GITHUB_WORKSPACE/* libs/$LIBRARY
+          git submodule update --init tools/boostdep
+          python tools/boostdep/depinst/depinst.py --git_args "--jobs 3" $LIBRARY
+
+      - name: Configure
+        run: |
+          cd ../boost-root
+          mkdir __build__ && cd __build__
+          cmake -DBOOST_INCLUDE_LIBRARIES=$LIBRARY -DBUILD_TESTING=ON ..
+
+      - name: Build tests
+        run: |
+          cd ../boost-root/__build__
+          cmake --build . --target tests
+
+      - name: Run tests
+        run: |
+          cd ../boost-root/__build__
+          ctest --output-on-failure --no-tests=error

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/CMakeLists.txt

@@ -0,0 +1,27 @@
+# Generated by `boostdep --cmake core`
+# Copyright 2020, 2021 Peter Dimov
+# Distributed under the Boost Software License, Version 1.0.
+# https://www.boost.org/LICENSE_1_0.txt
+
+cmake_minimum_required(VERSION 3.5...3.20)
+
+project(boost_core VERSION "${BOOST_SUPERPROJECT_VERSION}" LANGUAGES CXX)
+
+add_library(boost_core INTERFACE)
+add_library(Boost::core ALIAS boost_core)
+
+target_include_directories(boost_core INTERFACE include)
+
+target_link_libraries(boost_core
+  INTERFACE
+    Boost::assert
+    Boost::config
+    Boost::static_assert
+    Boost::throw_exception
+)
+
+if(BUILD_TESTING AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/test/CMakeLists.txt")
+
+  add_subdirectory(test)
+
+endif()

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/README.md

@@ -0,0 +1,32 @@
+Boost.Core
+==========
+
+Boost.Core, part of collection of the [Boost C++ Libraries](https://github.com/boostorg), is a collection of core utilities used by other Boost libraries.
+The criteria for inclusion is that the utility component be:
+
+* simple,
+* used by other Boost libraries, and
+* not dependent on any other Boost modules except Core itself, Config, Assert, Static Assert, or Predef.
+
+### Build Status
+
+Branch   | GitHub Actions | AppVeyor | Test Matrix | Dependencies |
+---------|----------------|--------- | ----------- | ------------ |
+Develop  | [![GitHub Actions](https://github.com/boostorg/core/actions/workflows/ci.yml/badge.svg?branch=develop)](https://github.com/boostorg/filesystem/actions?query=branch%3Adevelop) | [![AppVeyor](https://ci.appveyor.com/api/projects/status/github/boostorg/core?branch=develop&svg=true)](https://ci.appveyor.com/project/pdimov/core) | [![Tests](https://img.shields.io/badge/matrix-develop-brightgreen.svg)](http://www.boost.org/development/tests/develop/developer/core.html) | [![Dependencies](https://img.shields.io/badge/deps-develop-brightgreen.svg)](https://pdimov.github.io/boostdep-report/develop/core.html)
+Master   | [![GitHub Actions](https://github.com/boostorg/core/actions/workflows/ci.yml/badge.svg?branch=master)](https://github.com/boostorg/filesystem/actions?query=branch%3Amaster) | [![AppVeyor](https://ci.appveyor.com/api/projects/status/github/boostorg/core?branch=master&svg=true)](https://ci.appveyor.com/project/pdimov/core) | [![Tests](https://img.shields.io/badge/matrix-master-brightgreen.svg)](http://www.boost.org/development/tests/master/developer/core.html) | [![Dependencies](https://img.shields.io/badge/deps-master-brightgreen.svg)](https://pdimov.github.io/boostdep-report/master/core.html)
+
+### Directories
+
+* **doc** - Documentation of the components
+* **include** - Interface headers
+* **test** - Unit tests
+
+### More information
+
+* [Documentation](https://boost.org/libs/core)
+* [Report bugs](https://svn.boost.org/trac/boost/newticket?component=core;version=Boost%20Release%20Branch). Be sure to mention Boost version, platform and compiler you're using. A small compilable code sample to reproduce the problem is always good as well.
+* Submit your patches as pull requests against **develop** branch. Note that by submitting patches you agree to license your modifications under the [Boost Software License, Version 1.0](https://www.boost.org/LICENSE_1_0.txt).
+
+### License
+
+Distributed under the [Boost Software License, Version 1.0](https://boost.org/LICENSE_1_0.txt).

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/appveyor.yml

@@ -0,0 +1,90 @@
+# Copyright 2016-2021 Peter Dimov
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE_1_0.txt or copy at http://boost.org/LICENSE_1_0.txt)
+
+version: 1.0.{build}-{branch}
+
+shallow_clone: true
+
+branches:
+  only:
+    - master
+    - develop
+    - /feature\/.*/
+
+environment:
+  matrix:
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+      TOOLSET: msvc-9.0,msvc-10.0,msvc-11.0
+      ADDRMD: 32
+
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+      TOOLSET: msvc-12.0,msvc-14.0
+      ADDRMD: 32,64
+
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+      TOOLSET: msvc-14.1
+      ADDRMD: 32,64
+      CXXSTD: 14,17
+
+    # clang-win 32 bit fails to link with "unable to load mspdbcore.dll (error code: 126)"
+
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
+      TOOLSET: clang-win
+      ADDRMD: 64
+      CXXSTD: 14,17,latest
+
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+      ADDPATH: C:\cygwin\bin;
+      TOOLSET: gcc
+      CXXSTD: 03,11,14,1z
+
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+      ADDPATH: C:\cygwin64\bin;
+      TOOLSET: gcc
+      CXXSTD: 03,11,14,1z
+
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+      ADDPATH: C:\mingw\bin;
+      TOOLSET: gcc
+      CXXSTD: 03,11,14,1z
+
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+      ADDPATH: C:\mingw-w64\x86_64-6.3.0-posix-seh-rt_v5-rev1\mingw64\bin;
+      TOOLSET: gcc
+      CXXSTD: 03,11,14,1z
+
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+      ADDPATH: C:\mingw-w64\x86_64-7.2.0-posix-seh-rt_v5-rev1\mingw64\bin;
+      TOOLSET: gcc
+      CXXSTD: 03,11,14,1z
+
+install:
+  - set BOOST_BRANCH=develop
+  - if "%APPVEYOR_REPO_BRANCH%" == "master" set BOOST_BRANCH=master
+  - cd ..
+  - git clone -b %BOOST_BRANCH% https://github.com/boostorg/boost.git boost-root
+  - cd boost-root
+  - git submodule init libs/headers
+  - git submodule init libs/assert
+  - git submodule init libs/config
+  - git submodule init libs/predef
+  - git submodule init libs/static_assert
+  - git submodule init libs/throw_exception
+  - git submodule init libs/type_traits
+  - git submodule init libs/utility
+  - git submodule init libs/io
+  - git submodule init tools/build
+  - git submodule init tools/boost_install
+  - git submodule update --jobs 4
+  - xcopy /s /e /q %APPVEYOR_BUILD_FOLDER% libs\core\
+  - cmd /c bootstrap
+  - b2 headers
+
+build: off
+
+test_script:
+  - PATH=%ADDPATH%%PATH%
+  - if not "%CXXSTD%" == "" set CXXSTD=cxxstd=%CXXSTD%
+  - if not "%ADDRMD%" == "" set ADDRMD=address-model=%ADDRMD%
+  - b2 -j %NUMBER_OF_PROCESSORS% libs/core/test toolset=%TOOLSET% %CXXSTD% %ADDRMD% variant=debug,release embed-manifest-via=linker

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/.gitignore

@@ -0,0 +1,3 @@
+/html/
+/pdf/
+ref_reference.xml

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/Jamfile.v2

@@ -0,0 +1,62 @@
+# Copyright 2014 Glen Joseph Fernandes
+# (glenjofe@gmail.com)
+#
+# Distributed under the Boost Software License,
+# Version 1.0. (See accompanying file LICENSE_1_0.txt
+# or copy at http://boost.org/LICENSE_1_0.txt)
+
+import project ;
+import doxygen ;
+import quickbook ;
+
+path-constant INCLUDES : ../../.. ;
+
+doxygen ref_reference
+  :
+    $(INCLUDES)/boost/core/ref.hpp
+  :
+    <doxygen:param>ENABLE_PREPROCESSING=YES
+    <doxygen:param>EXPAND_ONLY_PREDEF=YES
+    <doxygen:param>EXTRACT_ALL=NO
+    <doxygen:param>EXTRACT_PRIVATE=NO
+    <doxygen:param>HIDE_UNDOC_MEMBERS=YES
+    <doxygen:param>MACRO_EXPANSION=YES
+    <doxygen:param>"PREDEFINED=BOOST_CORE_DOXYGEN \\
+                    BOOST_SYMBOL_VISIBLE= \\
+                    BOOST_FORCEINLINE=inline \\
+                    BOOST_GPU_ENABLED= \\
+                    BOOST_STATIC_ASSERT(x)= \\
+                    BOOST_STATIC_ASSERT_MSG(x,y)= \\
+                    BOOST_STATIC_CONSTANT(x,y)=\"static constexpr x y\" \\
+                    BOOST_RV_REF(x)=\"x&&\" \\
+                    BOOST_NESTED_TEMPLATE=template \\
+                    BOOST_CONSTEXPR=constexpr \\
+                    BOOST_CONSTEXPR_OR_CONST=constexpr \\
+                    BOOST_NOEXCEPT=noexcept \\
+                    BOOST_NOEXCEPT_IF(x)=noexcept(x) \\
+                    BOOST_NOEXCEPT_OR_NOTHROW=noexcept \\
+                    BOOST_COPY_ASSIGN_REF(x)=\"x const&\" \\
+                    BOOST_DEFAULTED_FUNCTION(x,y)=\"x = default;\" \\
+                    BOOST_DELETED_FUNCTION(x)=\"x = delete;\" \\
+                    BOOST_EXPLICIT_OPERATOR_BOOL()=\"explicit operator bool() const;\" \\
+                    BOOST_REF_CONST=const"
+  ;
+
+xml core : core.qbk ;
+
+boostbook standalone
+  :
+    core
+  :
+    <dependency>ref_reference
+    <xsl:param>boost.root=../../../..
+    <xsl:param>generate.section.toc.level=1
+    <xsl:param>toc.max.depth=1
+    <format>pdf:<xsl:param>boost.url.prefix="http://www.boost.org/doc/libs/release/libs/core/doc/html"
+  ;
+
+###############################################################################
+alias boostdoc ;
+explicit boostdoc ;
+alias boostrelease : standalone ;
+explicit boostrelease ;

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/addressof.qbk

@@ -0,0 +1,78 @@
+[/
+  Copyright 2014 Peter Dimov
+
+  Distributed under the Boost Software License, Version 1.0.
+
+  See accompanying file LICENSE_1_0.txt
+  or copy at http://boost.org/LICENSE_1_0.txt
+]
+
+[section:addressof addressof]
+
+[simplesect Authors]
+
+* Brad King
+* Douglas Gregor
+* Peter Dimov
+* Glen Fernandes
+
+[endsimplesect]
+
+[section Header <boost/core/addressof.hpp>]
+
+The header `<boost/core/addressof.hpp>` defines the function
+template `boost::addressof`. `boost::addressof(x)` returns the
+address of `x`. Ordinarily, this address can be obtained by
+`&x`, but the unary `&` operator can be overloaded. `boost::addressof`
+avoids calling used-defined `operator&()`.
+
+`boost::addressof` was originally contributed by Brad King
+based on ideas from discussion with Doug Gregor.
+
+[section Synopsis]
+
+``
+namespace boost
+{
+    template<class T> T* addressof( T& x );
+}
+``
+
+[endsect]
+
+[section Example]
+
+``
+#include <boost/core/addressof.hpp>
+
+struct useless_type { };
+
+class nonaddressable {
+    useless_type operator&() const;
+};
+
+void f() {
+    nonaddressable x;
+    nonaddressable* xp = boost::addressof(x);
+    // nonaddressable* xpe = &x; /* error */
+}
+``
+
+[endsect]
+
+[section Notes]
+
+In C++11 and above, `boost::addressof` is conditionally
+`constexpr` when possible. This is indicated by
+`BOOST_CORE_NO_CONSTEXPR_ADDRESSOF` not being defined.
+
+With supported compilers, `boost::addressof` is always
+`constexpr` by leveraging compiler intrinsics. This is
+indicated by `BOOST_CORE_HAS_BUILTIN_ADDRESSOF` being
+defined.
+
+[endsect]
+
+[endsect]
+
+[endsect]

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/alloc_construct.qbk

@@ -0,0 +1,149 @@
+[/
+Copyright 2019 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+]
+
+[section:alloc_construct alloc_construct]
+
+[simplesect Authors]
+
+* Glen Fernandes
+
+[endsimplesect]
+
+[section Overview]
+
+The header <boost/core/alloc_construct.hpp> provides function templates
+`alloc_construct`, `alloc_construct_n`, `alloc_destroy`, and `alloc_destroy_n`
+for allocator aware and exception safe construction and destruction of objects
+and arrays.
+
+[endsect]
+
+[section Example]
+
+The following example allocates storage for an array of `n` elements of `T`
+using an allocator `a` and constructs `T` elements in that storage. If any
+exception was thrown during construction of an element, the constructed
+elements are destroyed in reverse order.
+
+```
+template<class A>
+auto create(A& a, std::size_t n)
+{
+    auto p = a.allocate(n);
+    try {
+        boost::alloc_construct_n(a, boost::to_address(p), n);
+    } catch (...) {
+        a.deallocate(p, n);
+        throw;
+    }
+    return p;
+}
+```
+
+[endsect]
+
+[section Reference]
+
+```
+namespace boost {
+
+template<class A, class T>
+void alloc_destroy(A& a, T* p);
+
+template<class A, class T>
+void alloc_destroy_n(A& a, T* p, std::size_t n);
+
+template<class A, class T, class Args>
+void alloc_construct(A& a, T* p, Args&&... args);
+
+template<class A, class T>
+void alloc_construct_n(A& a, T* p, std::size_t n);
+
+template<class A, class T>
+void alloc_construct_n(A& a, T* p, std::size_t n, const T* l, std::size_t m);
+
+template<class A, class T, class I>
+void alloc_construct_n(A& a, T* p, std::size_t n, I begin);
+
+} /* boost */
+```
+
+[section Functions]
+
+[variablelist
+[[`template<class A, class T> void alloc_destroy(A& a, T* p);`]
+[[variablelist
+[[Requires][`A` is an /Allocator/]]
+[[Effects][`std::allocator_traits<A>::destroy(a, p)`.]]]]]
+[[`template<class A, class T> void alloc_destroy_n(A& a, T* p,
+std::size_t n);`]
+[[variablelist
+[[Requires][`A` is an /Allocator/]]
+[[Effects]
+[Destroys each `i`-th element in reverse order by calling
+`std::allocator_traits<A>::destroy(a, &p[i])`.]]]]]
+[[`template<class A, class T, class Args> void alloc_construct(A& a, T* p,
+Args&&... args);`]
+[[variablelist
+[[Requires][`A` is an /Allocator/]]
+[[Effects]
+[`std::allocator_traits<A>::construct(a, p, std::forward<Args>(args)...)`.]]]]]
+[[`template<class A, class T> void alloc_construct_n(A& a, T* p,
+std::size_t n);`]
+[[variablelist
+[[Requires][`A` is an /Allocator/]]
+[[Effects]
+[Constructs each `i`-th element in order by calling
+`std::allocator_traits<A>::construct(a, &p[i])`.]]
+[[Remarks]
+[If an exception is thrown destroys each already constructed `j`-th element in
+reverse order by calling `std::allocator_traits<A>::destroy(a, &p[j])`.]]]]]
+[[`template<class A, class T> void alloc_construct_n(A& a, T* p, std::size_t n,
+const T* l, std::size_t m);`]
+[[variablelist
+[[Requires][`A` is an /Allocator/]]
+[[Effects]
+[Constructs each `i`-th element in order by calling
+`std::allocator_traits<A>::construct(a, &p[i], l[i % m])`.]]
+[[Remarks]
+[If an exception is thrown destroys each already constructed `j`-th element in
+reverse order by calling `std::allocator_traits<A>::destroy(a, &p[j])`.]]]]]
+[[`template<class A, class T, class I> void alloc_construct_n(A& a, T* p,
+std::size_t n, I begin);`]
+[[variablelist
+[[Requires]
+[[itemized_list
+[`A` is an /Allocator/][`I` is an /InputIterator/]]]]
+[[Effects]
+[Constructs each `i`-th element in order by calling
+`std::allocator_traits<A>::construct(a, &p[i], *begin++])`.]]
+[[Remarks]
+[If an exception is thrown destroys each already constructed `j`-th element in
+reverse order by calling `std::allocator_traits<A>::destroy(a, &p[j])`.]]]]]]
+
+[endsect]
+
+[endsect]
+
+[section Compatibility]
+
+When `BOOST_NO_CXX11_ALLOCATOR` is defined, and the C++11 allocator model is
+not supported, these functions invoke constructors and destructors directly
+without going through the supplied allocator.
+
+[endsect]
+
+[section Acknowledgments]
+
+Glen Fernandes originally implemented this functionality in Boost.Smart_Ptr and
+later moved these functions to Boost.Core for use in other Boost libraries,
+such as Boost.Multi_Array and Boost.Histogram.
+
+[endsect]
+
+[endsect]

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/allocator_access.qbk

@@ -0,0 +1,244 @@
+[/
+Copyright 2020 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+]
+
+[section allocator_access]
+
+[simplesect Authors]
+
+* Glen Fernandes
+
+[endsimplesect]
+
+[section Overview]
+
+The header `<boost/core/allocator_access.hpp>` provides the class and function
+templates to simplify allocator use. It provides the same functionality as the
+C++ standard library `std::allocator_traits` but with individual templates for
+each allocator feature.
+
+These facilities also simplify existing libraries by avoiding having to check
+for `BOOST_NO_CXX11_ALLOCATOR` and conditionally use `std::allocator_traits`.
+
+[endsect]
+
+[section Examples]
+
+The following example shows these utilities used in the definition of
+an allocator-aware container class:
+
+```
+template<class T, class A = boost::default_allocator<T> >
+class container
+    : boost::empty_value<typename boost::allocator_rebind<A, T>::type> {
+public:
+    typedef T value_type;
+    typedef A allocator_type;
+    typedef typename boost::allocator_size_type<A>::type size_type;
+    typedef typename boost::allocator_difference_type<A>::type difference_type;
+    typedef value_type& reference;
+    typedef const value_type& const_reference;
+    typedef typename boost::allocator_pointer<A>::type pointer;
+    typedef typename boost::allocator_const_pointer<A>::type const_pointer;
+    // ...
+};
+```
+
+In C++11 or above, aliases such as `boost::allocator_pointer_t<A>` can be used
+instead of `typename boost::allocator_pointer<A>::type`.
+
+[endsect]
+
+[section Reference]
+
+```
+namespace boost {
+
+template<class A>
+struct allocator_value_type;
+
+template<class A>
+using allocator_value_type_t = typename allocator_value_type<A>::type;
+
+template<class A>
+struct allocator_pointer;
+
+template<class A>
+using allocator_pointer_t = typename allocator_pointer<A>::type;
+
+template<class A>
+struct allocator_const_pointer;
+
+template<class A>
+using allocator_const_pointer_t = typename allocator_const_pointer<A>::type;
+
+template<class A>
+struct allocator_void_pointer;
+
+template<class A>
+using allocator_void_pointer_t = typename allocator_void_pointer<A>::type;
+
+template<class A>
+struct allocator_const_void_pointer;
+
+template<class A>
+using allocator_const_void_pointer_t =
+    typename allocator_const_void_pointer<A>::type;
+
+template<class A>
+struct allocator_difference_type;
+
+template<class A>
+using allocator_difference_type_t =
+    typename allocator_difference_type<A>::type;
+
+template<class A>
+struct allocator_size_type;
+
+template<class A>
+using allocator_size_type_t = typename allocator_size_type<A>::type;
+
+template<class A>
+struct allocator_propagate_on_container_copy_assignment;
+
+template<class A>
+using allocator_propagate_on_container_copy_assignment_t =
+    typename allocator_propagate_on_container_copy_assignment<A>::type;
+
+template<class A>
+struct allocator_propagate_on_container_move_assignment;
+
+template<class A>
+using allocator_propagate_on_container_move_assignment_t =
+    typename allocator_propagate_on_container_move_assignment<A>::type;
+
+template<class A>
+struct allocator_propagate_on_container_swap;
+
+template<class A>
+using allocator_propagate_on_container_swap_t =
+    typename allocator_propagate_on_container_swap<A>::type;
+
+template<class A>
+struct allocator_is_always_equal;
+
+template<class A>
+using allocator_is_always_equal_t =
+    typename allocator_is_always_equal<A>::type;
+
+template<class A, class T>
+struct allocator_rebind;
+
+template<class A, class T>
+using allocator_rebind_t = typename allocator_rebind<A, T>::type;
+
+template<class A>
+allocator_pointer_t<A> allocator_allocate(A& a, allocator_size_type_t<A> n);
+
+template<class A>
+allocator_pointer_t<A> allocator_allocate(A& a, allocator_size_type_t<A> n,
+    allocator_const_void_pointer_t<A> h);
+
+template<class A>
+void allocator_deallocate(A& a, allocator_pointer_t<A> p,
+    allocator_size_type_t<A> n);
+
+template<class A, class T, class... Args>
+void allocator_construct(A& a, T* p, Args&&... args);
+
+template<class A, class T>
+void allocator_destroy(A& a, T* p);
+
+template<class A>
+allocator_size_type_t<A> allocator_max_size(const A& a);
+
+template<class A>
+A allocator_select_on_container_copy_construction(const A& a);
+
+} // boost
+```
+
+[section Types]
+
+[variablelist
+[[`template<class A> struct allocator_value_type;`]
+[The member `type` is `A::value_type`.]]
+[[`template<class A> struct allocator_pointer;`]
+[The member `type` is `A::pointer` if valid, otherwise
+`allocator_value_type_t<A>*`.]]
+[[`template<class A> struct allocator_const_pointer;`]
+[The member `type` is `A::const_pointer` if valid, otherwise
+`pointer_traits<allocator_pointer_t<A> >::rebind<const
+allocator_value_type_t<A> >`.]]
+[[`template<class A> struct allocator_void_pointer;`]
+[The member `type` is `A::void_pointer` if valid, otherwise
+`pointer_traits<allocator_pointer_t<A> >::rebind<void>`.]]
+[[`template<class A> struct allocator_const_void_pointer;`]
+[The member `type` is `A::const_void_pointer` if valid, otherwise
+`pointer_traits<allocator_pointer_t<A> >::rebind<const void>`.]]
+[[`template<class A> struct allocator_difference_type;`]
+[The member `type` is `A::difference_type` if valid, otherwise
+`pointer_traits<allocator_pointer_t<A> >::difference_type`.]]
+[[`template<class A> struct allocator_size_type;`]
+[The member `type` is `A::size_type` if valid, otherwise
+`std::make_unsigned_t<allocator_difference_type_t<A> >`.]]
+[[`template<class A> struct allocator_propagate_on_container_copy_assignment;`]
+[The member `type` is `A::propagate_on_container_copy_assignment` if valid,
+otherwise `std::false_type`.]]
+[[`template<class A> struct allocator_propagate_on_container_move_assignment;`]
+[The member `type` is `A::propagate_on_container_move_assignment` if valid,
+otherwise `std::false_type`.]]
+[[`template<class A> struct allocator_propagate_on_container_swap;`]
+[The member `type` is `A::propagate_on_container_swap` if valid, otherwise
+`std::false_type`.]]
+[[`template<class A> struct allocator_is_always_equal;`]
+[The member `type` is `A::is_always_equal` if valid, otherwise
+`std::is_empty<A>::type`.]]
+[[`template<class A, class T> struct allocator_rebind;`]
+[The member `type` is `A::rebind<T>::other` if valid, otherwise `A<T, Args>`
+if this `A` is `A<U, Args>`.]]]
+
+[endsect]
+
+[section Functions]
+
+[variablelist
+[[`template<class A>
+allocator_pointer_t<A> allocator_allocate(A& a, allocator_size_type_t<A> n);`]
+[Calls `a.allocate(n)`.]]
+[[`template<class A> allocator_pointer_t<A> allocator_allocate(A& a,
+allocator_size_type_t<A> n, allocator_const_void_pointer_t<A> hint);`]
+[Calls `a.allocate(n, hint)` if valid, otherwise calls `a.allocate(n)`.]]
+[[`template<class A> void allocator_deallocate(A& a, allocator_pointer_t<A> p,
+allocator_size_type_t<A> n);`]
+[Calls `a.deallocate(p, n)`.]]
+[[`template<class A, class T, class... Args>
+void allocator_construct(A& a, T*p, Args&&... args);`]
+[Calls `a.construct(p, std::forward<Args>(args)...)` if valid, otherwise calls
+`::new(static_cast<void*>(p)) T(std::forward<Args>(args)...)`.]]
+[[`template<class A, class T> void allocator_destroy(A& a, T* p);`]
+[Calls `a.destroy(p)` if valid, otherwise calls `p->~T()`.]]
+[[`template<class A> allocator_size_type_t<A> allocator_max_size(const A& a);`]
+[Returns `a.max_size()` if valid, otherwise returns
+`std::numeric_limits<allocator_size_type_t<A> >::max() /
+sizeof(allocator_value_type_t<A>)`.]]
+[[`template<class A> A allocator_select_on_container_copy_construction(const
+A& a);`]
+[Returns `a.select_on_container_copy_construction()` if valid, otherwise
+returns `a`.]]]
+
+[endsect]
+
+[endsect]
+
+[section Acknowledgments]
+
+Glen Fernandes implemented the allocator access utilities.
+
+[endsect]
+
+[endsect]

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/allocator_traits.qbk

@@ -0,0 +1,116 @@
+[/
+Copyright 2021 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+]
+
+[section:allocator_traits allocator_traits]
+
+[simplesect Authors]
+
+* Glen Fernandes
+
+[endsimplesect]
+
+[section Overview]
+
+This header <boost/core/allocator_traits.hpp> provides an implementation of the
+C++ standard library class template `allocator_traits` based on the facilities
+in [link core.allocator_access Allocator Access]. Users should still prefer the
+individual traits, but this utility exists to simplify migration.
+
+[endsect]
+
+[section Reference]
+
+```
+namespace boost {
+
+template<class A>
+struct allocator_traits {
+    using allocator_type = A;
+
+    using value_type = allocator_value_type_t<A>;
+
+    using pointer = allocator_pointer_t<A>;
+
+    using const_pointer = allocator_const_pointer_t<A>;
+
+    using void_pointer = allocator_void_pointer_t<A>;
+
+    using const_pointer = allocator_const_void_pointer_t<A>;
+
+    using difference_type = allocator_difference_type_t<A>;
+
+    using size_type = allocator_size_type_t<A>;
+
+    using propagate_on_container_copy_assignment =
+        allocator_propagate_on_container_copy_assignment_t<A>;
+
+    using propagate_on_container_move_assignment =
+        allocator_propagate_on_container_move_assignment_t<A>;
+
+    using propagate_on_container_swap =
+        allocator_propagate_on_container_swap_t<A>;
+
+    using is_always_equal = allocator_is_always_equal_t<A>;
+
+    template<class T>
+    using rebind_traits = allocator_traits<allocator_rebind_t<A, T> >;
+
+    static pointer allocate(A& a, size_type n);
+
+    static pointer allocate(A& a, size_type n, const_void_pointer h);
+
+    static void deallocate(A& a, pointer p, size_type n);
+
+    template<class T, class... Args>
+    static void construct(A& a, T* p, Args&&... args);
+
+    static void destroy(A& a, T* p);
+
+    static size_type max_size(const A& a) noexcept;
+
+    static A select_on_container_copy_construction(const A& a);
+};
+
+} /* boost */
+```
+
+[section Static member functions]
+
+[variablelist
+[[`static pointer allocate(A& a, size_type n);`]
+[Equivalent to: `return boost::allocator_allocate(a, n);`]]
+[[`static pointer allocate(A& a, size_type n, const_void_pointer h);`]
+[Equivalent to: `return boost::allocator_allocate(a, n, h);`]]
+[[`static void deallocate(A& a, pointer p, size_type n);`]
+[Equivalent to: `boost::allocator_deallocate(a, n, h);`]]
+[[`template<class T, class... Args>
+static void construct(A& a, T* p, Args&&... args);`]
+[Equivalent to:
+`boost::allocator_construct(a, p, std::forward<Args>(args)...);`]]
+[[`static void destroy(A& a, T* p);`]
+[Equivalent to: `boost::allocator_destroy(a, p);`]]
+[[`static size_type max_size(const A& a) noexcept;`]
+[Equivalent to: `return boost::allocator_max_size(a);`]]
+[[`static A select_on_container_copy_construction(const A& a);`]
+[Equivalent to:
+`return boost::allocator_select_on_container_copy_construction(a);`]]]
+
+[endsect]
+
+[endsect]
+
+[section Notes]
+
+# The member `rebind_alloc` is not provided for parity with C++03 where it is
+unimplementable. Instead of `allocator_traits<A>::rebind_alloc<U>` you can
+express the same with `allocator_traits<A>::rebind_traits<U>::allocator_type`
+or more simply with `allocator_rebind_t<A, U>`.
+
+[endsect]
+
+[endsect]

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/bit.qbk

@@ -0,0 +1,203 @@
+[/
+  Copyright 2020 Peter Dimov
+
+  Distributed under the Boost Software License, Version 1.0.
+
+  See accompanying file LICENSE_1_0.txt
+  or copy at http://boost.org/LICENSE_1_0.txt
+]
+
+[section:bit bit]
+
+[simplesect Authors]
+
+* Peter Dimov
+
+[endsimplesect]
+
+[section Header <boost/core/bit.hpp>]
+
+The header `<boost/core/bit.hpp>` implements, in a portable way,
+the C++20 `<bit>` header.
+
+[section Synopsis]
+
+``
+namespace boost
+{
+namespace core
+{
+
+// bit_cast
+
+template<class To, class From>
+To bit_cast(From const& from) noexcept;
+
+// Integral powers of 2
+
+template<class T>
+constexpr bool has_single_bit(T x) noexcept;
+
+template<class T>
+constexpr T bit_ceil(T x) noexcept;
+
+template<class T>
+constexpr T bit_floor(T x) noexcept;
+
+template<class T>
+constexpr T bit_width(T x) noexcept;
+
+// Rotating
+
+template<class T>
+constexpr T rotl(T x, int s) noexcept;
+
+template<class T>
+constexpr T rotr(T x, int s) noexcept;
+
+// Counting
+
+template<class T>
+constexpr int countl_zero(T x) noexcept;
+
+template<class T>
+constexpr int countl_one(T x) noexcept;
+
+template<class T>
+constexpr int countr_zero(T x) noexcept;
+
+template<class T>
+constexpr int countr_one(T x) noexcept;
+
+template<class T>
+constexpr int popcount(T x) noexcept;
+
+// Endian
+
+enum class endian
+{
+    little = see below,
+    big = see below,
+    native = see below
+};
+
+using endian_type = endian; // portable alias for C++03 code
+
+} // namespace core
+} // namespace boost
+``
+
+Note: even though the functions are shown as `constexpr` in the synopsis, since they are implemented
+via compiler-specific intrinsics, portable code cannot generally rely on their being usable in a
+constant expression context.
+
+[endsect]
+
+[section bit_cast]
+
+`template<class To, class From> To bit_cast(From const& from) noexcept;`
+
+* *Requires:* `To` and `From` must be trivially copyable and `sizeof(To)` must be the same as `sizeof(From)`.
+* *Returns:* A value of type `To` with the storage bytes copied from `from`.
+
+[endsect]
+
+[section Integral powers of 2]
+
+`template<class T> constexpr bool has_single_bit(T x) noexcept;`
+
+* *Requires:* `T` must be an unsigned integer type (i.e. one of `unsigned char`, `unsigned short`, `unsigned int`, `unsigned long`, `unsigned long long`).
+* *Returns:* `true` if `x` is an integral power of two, `false` otherwise. (`has_single_bit(0u)` is false.)
+
+`template<class T> constexpr T bit_ceil(T x) noexcept;`
+
+* *Requires:* `T` must be an unsigned integer type.
+* *Returns:* The smallest integral power of 2 greater than or equal to `x`. If this value is not representable in `T`, behavior is undefined.
+
+`template<class T> constexpr T bit_floor(T x) noexcept;`
+
+* *Requires:* `T` must be an unsigned integer type.
+* *Returns:* If `x == 0`, 0; otherwise the maximal value `y` such that `has_single_bit(y)` is `true` and `y <= x`.
+
+`template<class T> constexpr T bit_width(T x) noexcept;`
+
+* *Requires:* `T` must be an unsigned integer type.
+* *Returns:* If `x == 0`, 0; otherwise one plus the base-2 logarithm of `x`, with any fractional part discarded.
+
+[endsect]
+
+[section Rotating]
+
+In the following descriptions, `N` denotes `numeric_limits<T>::digits` and `r` denotes `s % N`.
+
+`template<class T> constexpr T rotl(T x, int s) noexcept;`
+
+* *Requires:* `T` must be an unsigned integer type.
+* *Returns:* If `s` is negative, `rotr(x, -s)`; if `r` is 0, `x`; if `r` is positive, `(x << r) | (x >> (N - r))`.
+
+`template<class T> constexpr T rotr(T x, int s) noexcept;`
+
+* *Requires:* `T` must be an unsigned integer type.
+* *Returns:* If `s` is negative, `rotl(x, -s)`; if `r` is 0, `x`; if `r` is positive, `(x >> r) | (x << (N - r))`.
+
+[endsect]
+
+[section Counting]
+
+`template<class T> constexpr int countl_zero(T x) noexcept;`
+
+* *Requires:* `T` must be an unsigned integer type.
+* *Returns:* The number of consecutive 0 bits in the value of `x`, starting from the most significant ("left") bit.
+
+`template<class T> constexpr int countl_one(T x) noexcept;`
+
+* *Requires:* `T` must be an unsigned integer type.
+* *Returns:* The number of consecutive 1 bits in the value of `x`, starting from the most significant bit.
+
+`template<class T> constexpr int countr_zero(T x) noexcept;`
+
+* *Requires:* `T` must be an unsigned integer type.
+* *Returns:* The number of consecutive 0 bits in the value of `x`, starting from the least significant ("right") bit.
+
+`template<class T> constexpr int countr_one(T x) noexcept;`
+
+* *Requires:* `T` must be an unsigned integer type.
+* *Returns:* The number of consecutive 1 bits in the value of `x`, starting from the least significant bit.
+
+`template<class T> constexpr int popcount(T x) noexcept;`
+
+* *Requires:* `T` must be an unsigned integer type.
+* *Returns:* The number of 1 bits in the value of `x`.
+
+[endsect]
+
+[section Endian]
+
+Under C++11, `endian` is defined as `enum class endian` as shown in the synopsis. Under C++03, its definition is
+
+``
+namespace endian
+{
+enum type
+{
+    little = see below,
+    big = see below,
+    native = see below
+};
+}
+
+typedef endian::type endian_type;
+``
+
+The values of `endian::big` and `endian::little` are distinct. `endian::native` is equal to `endian::big` on
+big endian platforms, equal to `endian::little` on little endian platforms, and a distinct value on platforms
+that are neither.
+
+Note that you should not rely on `little` and `big` having any specific values, because the C++20 standard
+leaves these unspecified.
+
+[endsect]
+
+[endsect]
+
+[endsect]

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/changes.qbk

@@ -0,0 +1,101 @@
+[/
+  Copyright 2021 Peter Dimov
+  Distributed under the Boost Software License, Version 1.0.
+  https://boost.org/LICENSE_1_0.txt)
+]
+
+[section Revision History]
+
+[section Changes in 1.79.0]
+
+* Added `boost::allocator_traits`, an implementation of `std::allocator_traits`.
+* Made `boost::pointer_traits` SFINAE friendly.
+* `boost/iterator.hpp` is deprecated and will be removed in a future release. The header defines `boost::iterator` template, which is equivalent to `std::iterator` in `<iterator>` header. However, since `std::iterator` is itself deprecated in C++17, users are advised to remove `boost::iterator` or `std::iterator` use from their code.
+* Added `boost::core::verbose_terminate_handler`, a utility function intended
+  to be passed to `std::set_terminate` that prints information about the
+  uncaught exception to `stderr`.
+
+[endsect]
+
+[section Changes in 1.78.0]
+
+* Added a generic implementation to `boost/core/cmath.hpp`, enabled when `BOOST_CORE_USE_GENERIC_CMATH`
+  is defined or when the platform does not provide the necessary facilities in `<cmath>`.
+* Added `boost::core::type_name`, a utility function that returns the name of a type as a string.
+* Added `boost::span`, a C++11 implementation of C++20's `std::span`.
+
+[endsect]
+
+[section Changes in 1.77.0]
+
+* `boost/core/uncaught_exceptions.hpp` has been modified for compatibility with Mac OS 10.4 and older.
+
+[endsect]
+
+[section Changes in 1.76.0]
+
+* Added implicit conversion between compatible reference wrappers.
+* Added `boost/core/cmath.hpp`, a portable implementation of the floating point classification functions from `<cmath>`.
+* Added `boost/core/bit.hpp`, a portable implementation of the C++20 standard header `<bit>`.
+* Fixed `BOOST_TEST_EQ`, `BOOST_TEST_NE` for character types under C++20.
+* Revised allocator access utilities (now support VS2013, and no workarounds use `allocator_traits`.)
+
+[endsect]
+
+[section Changes in 1.74.0]
+
+* Implemented the allocator access utilities which provide a replacement for `allocator_traits`
+  with individual traits and functions for each facility. They support the C++11 allocator model
+  when possible and provide a fallback for C++98 compatibility.
+* Added `BOOST_TEST_WITH` to Lightweight Test.
+
+[endsect]
+
+[section Changes in 1.71.0]
+
+* Added functions `alloc_construct`, `alloc_construct_n`, `alloc_destroy`, and `alloc_destroy_n`
+  in `<boost/core/alloc_construct.hpp>` for allocator aware and exception safe construction and
+  destruction of objects and arrays.
+* Added constexpr functions `first_scalar` in `<boost/core/first_scalar.hpp>` for obtaining a pointer
+  to the first scalar element of an array. Given a pointer of type `T*` they return a pointer of type
+  `remove_all_extents_t<T>*`.
+* Added class template `noinit_adaptor` in `<boost/core/noinit_adaptor.hpp>` which is an allocator adaptor
+  that converts any allocator into one whose `construct(ptr)` performs default initialization via placement
+  `new`, and whose `destroy(ptr)` invokes the `value_type` destructor directly.
+* Added class template `default_allocator` in `<boost/core/default_allocator.hpp>`, which can serve as a minimal
+  default allocator that has interface similar to C++20 `std::allocator`, supports configurations with disabled
+  exceptions and does not have `std` as an associated namespace. The allocator uses `operator new` and
+  `operator delete` for allocation.
+* In `<boost/core/uncaught_exceptions.hpp>` header, added workarounds for better compatibility with QNX SDP 7.0
+  when libc++/libc++abi libraries are used.
+* The `<boost/detail/sp_typeinfo.hpp>` header is now marked as deprecated and will be removed in a future release.
+  `<boost/core/typeinfo.hpp>` should be used instead.
+
+[endsect]
+
+[section Changes in 1.69.0]
+
+* Implemented `boost::empty_value`, for library authors to conveniently leverage the Empty Base Optimization to
+  store objects of potentially empty types.
+* Implemented `boost::quick_exit` to provide the C++11 standard library facility `std::quick_exit` functionality.
+* Reduced the number of statics in Lightweight Test, and employ lighter abort behavior for MSVC compilers upon
+  failure to call `boost::report_errors`.
+
+[endsect]
+
+[section Changes in 1.67.0]
+
+* Updated `to_address` and `pointer_traits` to reflect the design adopted for C++20 in
+  [@http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0653r2.html P0653R2].
+
+[endsect]
+
+[section Changes in 1.65.0]
+
+* Implemented `pointer_traits` for C++03 and higher, that implements
+  [@http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0653r0.html P0653r0].
+* Added `BOOST_TEST_GT` and `BOOST_TEST_GE` to Lightweight Test.
+
+[endsect]
+
+[endsect]

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/checked_delete.qbk

@@ -0,0 +1,138 @@
+[/
+ /  Copyright (c) 2002, 2003, 2005 Peter Dimov
+ /  Copyright (c) 2014 Glen Fernandes
+ /
+ /  Distributed under the Boost Software License, Version 1.0. (See
+ /  accompanying file LICENSE_1_0.txt or copy at
+ /  http://www.boost.org/LICENSE_1_0.txt)
+ /]
+
+[section:checked_delete checked_delete]
+
+[simplesect Authors]
+
+* Beman Dawes
+* Dave Abrahams
+* Vladimir Prus
+* Rainer Deyke
+* John Maddock
+
+[endsimplesect]
+
+[section Overview]
+
+The header `<boost/checked_delete.hpp>` defines two function
+templates, `checked_delete` and `checked_array_delete`, and two
+class templates, `checked_deleter` and `checked_array_deleter`.
+
+The C++ Standard allows, in 5.3.5/5, pointers to incomplete
+class types to be deleted with a delete-expression. When the
+class has a non-trivial destructor, or a class-specific
+operator delete, the behavior is undefined. Some compilers
+issue a warning when an incomplete type is deleted, but 
+unfortunately, not all do, and programmers sometimes ignore or
+disable warnings.
+
+A particularly troublesome case is when a smart pointer's
+destructor, such as `boost::scoped_ptr<T>::~scoped_ptr`, is
+instantiated with an incomplete type. This can often lead to
+silent, hard to track failures.
+
+The supplied function and class templates can be used to
+prevent these problems, as they require a complete type, and
+cause a compilation error otherwise.
+
+[endsect]
+
+[section Synopsis]
+
+``
+namespace boost
+{
+    template<class T> void checked_delete(T * p);
+    template<class T> void checked_array_delete(T * p);
+    template<class T> struct checked_deleter;
+    template<class T> struct checked_array_deleter;
+}
+``
+
+[endsect]
+
+[section checked_delete]
+
+[section template<class T> void checked_delete(T * p);]
+
+* *Requires:* `T` must be a complete type. The expression
+  `delete p` must be well-formed.
+* *Effects:* `delete p;`
+
+[endsect]
+
+[endsect]
+
+[section checked_array_delete]
+
+[section template<class T> void checked_array_delete(T * p);]
+
+* *Requires:* `T` must be a complete type. The expression
+  `delete [] p` must be well-formed.
+* *Effects:* `delete [] p;`
+
+[endsect]
+
+[endsect]
+
+[section checked_deleter]
+
+``
+template<class T> struct checked_deleter
+{
+    typedef void result_type;
+    typedef T * argument_type;
+    void operator()(T * p) const;
+};
+``
+
+[section void checked_deleter<T>::operator()(T * p) const;]
+
+* *Requires:* `T` must be a complete type. The expression
+  `delete p` must be well-formed.
+* *Effects:* `delete p;`
+  
+[endsect]
+
+[endsect]
+
+[section checked_array_deleter]
+
+``
+template<class T> struct checked_array_deleter
+{
+    typedef void result_type;
+    typedef T * argument_type;
+    void operator()(T * p) const;
+};
+``
+
+[section void checked_array_deleter<T>::operator()(T * p) const;]
+
+* *Requires:* `T` must be a complete type. The expression
+  `delete [] p` must be well-formed.
+* *Effects:* `delete [] p;`
+
+[endsect]
+
+[endsect]
+
+[section Acknowledgements]
+
+The function templates `checked_delete` and
+`checked_array_delete` were originally part of
+`<boost/utility.hpp>`, and the documentation
+acknowledged Beman Dawes, Dave Abrahams,
+Vladimir Prus, Rainer Deyke, John Maddock, 
+and others as contributors.
+
+[endsect]
+
+[endsect]

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/cmath.qbk

@@ -0,0 +1,122 @@
+[/
+  Copyright 2018 Peter Dimov
+
+  Distributed under the Boost Software License, Version 1.0.
+
+  See accompanying file LICENSE_1_0.txt
+  or copy at http://boost.org/LICENSE_1_0.txt
+]
+
+[section:cmath cmath]
+
+[simplesect Authors]
+
+* Peter Dimov
+
+[endsimplesect]
+
+[section Header <boost/core/cmath.hpp>]
+
+The header `<boost/core/cmath.hpp>` defines, in a portable way, the floating
+point classification and sign manipulation functions from C++11.
+
+[section Synopsis]
+
+``
+namespace boost
+{
+namespace core
+{
+
+// fpclassify return values
+
+int const fp_zero = /*unspecified*/;
+int const fp_subnormal = /*unspecified*/;
+int const fp_normal = /*unspecified*/;
+int const fp_infinite = /*unspecified*/;
+int const fp_nan = /*unspecified*/;
+
+// Classification functions
+
+template<class T> bool isfinite( T x );
+template<class T> bool isnan( T x );
+template<class T> bool isinf( T x );
+template<class T> bool isnormal( T x );
+template<class T> int fpclassify( T x );
+
+// Sign manipulation functions
+
+template<class T> bool signbit( T x );
+template<class T> T copysign( T x, T y );
+
+} // namespace core
+} // namespace boost
+``
+
+[endsect]
+
+[section Classification Functions]
+
+[section template<class T> bool isfinite( T x );]
+
+* *Requires:* `T` must be `float`, `double`, or `long double`.
+* *Returns:* `true` when `x` is finite (not infinity or NaN), `false` otherwise.
+
+[endsect]
+
+[section template<class T> bool isnan( T x );]
+
+* *Requires:* `T` must be `float`, `double`, or `long double`.
+* *Returns:* `true` when `x` is NaN, `false` otherwise.
+
+[endsect]
+
+[section template<class T> bool isinf( T x );]
+
+* *Requires:* `T` must be `float`, `double`, or `long double`.
+* *Returns:* `true` when `x` is infinity, `false` otherwise.
+
+[endsect]
+
+[section template<class T> bool isnormal( T x );]
+
+* *Requires:* `T` must be `float`, `double`, or `long double`.
+* *Returns:* `true` when `x` is a normal number (not zero, subnormal, infinity, or NaN), `false` otherwise.
+
+[endsect]
+
+[section template<class T> int fpclassify( T x );]
+
+* *Requires:* `T` must be `float`, `double`, or `long double`.
+* *Returns:*
+  * `fp_zero` when `x` is zero;
+  * `fp_subnormal` when `x` is subnormal;
+  * `fp_infinite` when `x` is infinity;
+  * `fp_nan` when `x` is NaN;
+  * `fp_normal` otherwise.
+
+[endsect]
+
+[endsect]
+
+[section Sign Manipulation Functions]
+
+[section template<class T> bool signbit( T x );]
+
+* *Requires:* `T` must be `float`, `double`, or `long double`.
+* *Returns:* `true` when `x` is negative, `false` otherwise.
+
+[endsect]
+
+[section template<class T> bool copysign( T x, T y );]
+
+* *Requires:* `T` must be `float`, `double`, or `long double`.
+* *Returns:* `x` with the sign copied from `y`.
+
+[endsect]
+
+[endsect]
+
+[endsect]
+
+[endsect]

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/core.qbk

@@ -0,0 +1,75 @@
+[/
+Copyright 2014 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License,
+Version 1.0. (See accompanying file LICENSE_1_0.txt
+or copy at http://boost.org/LICENSE_1_0.txt)
+]
+
+[library Boost.Core
+  [quickbook 1.6]
+  [id core]
+  [copyright 2014 Peter Dimov]
+  [copyright 2014 Glen Fernandes]
+  [copyright 2014 Andrey Semashev]
+  [dirname core]
+  [license Distributed under the
+    [@http://boost.org/LICENSE_1_0.txt Boost Software License,
+      Version 1.0].
+  ]
+]
+
+[template simplesect[title]
+[block '''<simplesect><title>'''[title]'''</title>''']]
+
+[template endsimplesect[]
+[block '''</simplesect>''']]
+
+[section Introduction]
+
+The Boost.Core library is a collection of core utilities. The
+criteria for inclusion is that the utility component be:
+
+* simple,
+* used by other Boost libraries, and
+* not dependent on any other Boost modules except Core
+  itself, Config, Assert, StaticAssert, or ThrowException.
+
+[endsect]
+
+[include changes.qbk]
+
+[include addressof.qbk]
+[include allocator_access.qbk]
+[include allocator_traits.qbk]
+[include alloc_construct.qbk]
+[include bit.qbk]
+[include checked_delete.qbk]
+[include cmath.qbk]
+[include default_allocator.qbk]
+[include demangle.qbk]
+[include empty_value.qbk]
+[include enable_if.qbk]
+[include exchange.qbk]
+[include explicit_operator_bool.qbk]
+[include first_scalar.qbk]
+[include ignore_unused.qbk]
+[include is_same.qbk]
+[include lightweight_test.qbk]
+[include no_exceptions_support.qbk]
+[include noinit_adaptor.qbk]
+[include noncopyable.qbk]
+[include null_deleter.qbk]
+[include nvp.qbk]
+[include pointer_traits.qbk]
+[include quick_exit.qbk]
+[include ref.qbk]
+[include scoped_enum.qbk]
+[include span.qbk]
+[include swap.qbk]
+[include typeinfo.qbk]
+[include type_name.qbk]
+[include uncaught_exceptions.qbk]
+[include use_default.qbk]
+[include verbose_terminate_handler.qbk]

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/default_allocator.qbk

@@ -0,0 +1,140 @@
+[/
+Copyright 2019 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+]
+
+[section:default_allocator default_allocator]
+
+[simplesect Authors]
+
+* Glen Fernandes
+
+[endsimplesect]
+
+[section Overview]
+
+The header <boost/core/default_allocator.hpp> provides the class template
+`boost::default_allocator` to serve as a minimal default allocator that:
+
+* Like C++2a's `std::allocator`, does not provide members such as `construct()`
+and `destroy()` to be eligible for optimizations by allocator-aware code that
+detects the absence of these members to provide more optimal construction.
+* Supports `BOOST_NO_EXCEPTIONS` in allocation.
+* Does not have `std` as an associated namespace.
+
+[endsect]
+
+[section Examples]
+
+The following snippet shows the use of this allocator as the default allocator
+for a container.
+
+```
+template<class Key, class Compare = std::less<Key>,
+    class Allocator = boost::default_allocator<Key> >
+class FlatSet;
+```
+
+Facilities like `make_shared` can be implemented using `allocate_shared` with
+`default_allocator`.
+
+```
+template<class T, class... Args>
+enable_if_t<!is_array_v<T>, shared_ptr<T> >
+make_shared(Args&&... args)
+{
+    return allocate_shared<T>(boost::default_allocator<remove_cv_t<T> >(),
+        std::forward<Args>(args)...);
+}
+```
+
+[endsect]
+
+[section Reference]
+
+```
+namespace boost {
+
+template<class T>
+struct default_allocator {
+    typedef T value_type;
+    typedef T* pointer;
+    typedef const T* const_pointer;
+    typedef std::add_lvalue_reference_t<T> reference;
+    typedef std::add_lvalue_reference_t<const T> const_reference;
+    typedef std::size_t size_type;
+    typedef std::ptrdiff_t difference_type;
+    typedef ``['true_type]`` propagate_on_container_move_assignment;
+    typedef ``['true_type]`` is_always_equal;
+
+    template<class U>
+    struct rebind {
+        typedef default_allocator<U> other;
+    };
+
+    constexpr default_allocator() = default;
+
+    template<class U>
+    constexpr default_allocator(const default_allocator<U>&) noexcept { }
+
+    constexpr std::size_t max_size() const noexcept;
+    T* allocate(std::size_t n);
+    void deallocate(T* p, std::size_t);
+};
+
+template<class T, class U>
+constexpr bool operator==(const default_allocator<T>&,
+    const default_allocator<U>&) noexcept;
+
+template<class T, class U>
+constexpr bool operator!=(const default_allocator<T>&,
+    const default_allocator<U>&) noexcept;
+
+} /* boost */
+```
+
+[section Members]
+
+[variablelist
+[[`constexpr std::size_t max_size() const noexcept;`]
+[[variablelist
+[[Returns][The largest value `N` for which the call `allocate(N)` might
+succeed.]]]]]
+[[`T* allocate(std::size_t n);`]
+[[variablelist
+[[Returns]
+[A pointer to the initial element of an array of storage of size
+`n * sizeof(T)`, aligned appropriately for objects of type `T`.]]
+[[Remarks][The storage is obtained by calling `::operator new`.]]
+[[Throws][`std::bad_alloc` if the storage cannot be obtained.]]]]]
+[[`void deallocate(T* p, std::size_t n);`]
+[[variablelist
+[[Requires]
+[`p` shall be a pointer value obtained from `allocate()`. `n` shall equal the
+value passed as the first argument to the invocation of `allocate` which
+returned `p`.]]
+[[Effects][Deallocates the storage referenced by `p`.]]
+[[Remarks][Uses `::operator delete`.]]]]]]
+
+[endsect]
+
+[section Operators]
+
+[variablelist
+[[`template<class T, class U> constexpr bool operator==(const
+default_allocator<T>&, const default_allocator<U>&) noexcept;`]
+[[variablelist
+[[Returns][`true`.]]]]]
+[[`template<class T, class U> constexpr bool operator!=(const
+default_allocator<T>&, const default_allocator<U>&) noexcept;`]
+[[variablelist
+[[Returns][`false`.]]]]]]
+
+[endsect]
+
+[endsect]
+
+[endsect]

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/demangle.qbk

@@ -0,0 +1,136 @@
+[/
+  Copyright 2014 Peter Dimov
+  Copyright 2014 Andrey Semashev
+
+  Distributed under the Boost Software License, Version 1.0.
+
+  See accompanying file LICENSE_1_0.txt
+  or copy at http://boost.org/LICENSE_1_0.txt
+]
+
+[section:demangle demangle]
+
+[simplesect Authors]
+
+* Peter Dimov
+* Andrey Semashev
+
+[endsimplesect]
+
+[section Header <boost/core/demangle.hpp>]
+
+The header `<boost/core/demangle.hpp>` defines several tools for undecorating
+symbol names.
+
+[section Synopsis]
+
+    namespace boost
+    {
+
+    namespace core
+    {
+        std::string demangle( char const * name );
+
+        char const * demangle_alloc( char const * name ) noexcept;
+        void demangle_free( char const * demangled_name ) noexcept;
+
+        class scoped_demangled_name
+        {
+        public:
+            explicit scoped_demangled_name( char const * name ) noexcept;
+            ~scoped_demangled_name() noexcept;
+            char const * get() const noexcept;
+
+            scoped_demangled_name( scoped_demangled_name const& ) = delete;
+            scoped_demangled_name& operator= ( scoped_demangled_name const& ) = delete;
+        };
+    }
+
+    }
+
+[endsect]
+
+[section Conventional interface]
+
+The function `boost::core::demangle` is the conventional
+way to obtain demangled symbol name. It takes a mangled string such as
+those returned by `typeid(T).name()` on certain implementations
+such as `g++`, and returns its demangled, human-readable, form. In case if
+demangling fails (e.g. if `name` cannot be interpreted as a mangled name)
+the function returns `name`.
+
+[section Example]
+
+    #include <boost/core/demangle.hpp>
+    #include <typeinfo>
+    #include <iostream>
+
+    template<class T> struct X
+    {
+    };
+
+    int main()
+    {
+        char const * name = typeid( X<int> ).name();
+
+        std::cout << name << std::endl; // prints 1XIiE
+        std::cout << boost::core::demangle( name ) << std::endl; // prints X<int>
+    }
+
+[endsect]
+
+[endsect]
+
+[section Low level interface]
+
+In some cases more low level interface may be desirable. For example:
+
+* Assuming that symbol demangling may fail, the user wants to be able to handle such errors.
+* The user needs to post-process the demangled name (e.g. remove common namespaces), and
+allocating a temporary string with the complete demangled name is significant overhead.
+
+The function `boost::core::demangle_alloc` performs name demangling and returns a pointer
+to a string with the demangled name, if succeeded, or `nullptr` otherwise. The returned pointer
+must be passed to `boost::core::demangle_free` to reclaim resources. Note that on some platforms
+the pointer returned by `boost::core::demangle_alloc` may refer to the string denoted by `name`,
+so this string must be kept immutable for the whole life time of the returned pointer.
+
+The `boost::core::scoped_demangled_name` class is a scope guard that automates the calls to
+`boost::core::demangle_alloc` (on its construction) and `boost::core::demangle_free` (on destruction).
+The string with the demangled name can be obtained with its `get` method. Note that this method may
+return `nullptr` if demangling failed.
+
+[section Example]
+
+    #include <boost/core/demangle.hpp>
+    #include <typeinfo>
+    #include <iostream>
+
+    template<class T> struct X
+    {
+    };
+
+    int main()
+    {
+        char const * name = typeid( X<int> ).name();
+        boost::core::scoped_demangled_name demangled( name );
+
+        std::cout << name << std::endl; // prints 1XIiE
+        std::cout << (demangled.get() ? demangled.get() : "[unknown]") << std::endl; // prints X<int>
+    }
+
+[endsect]
+
+[endsect]
+
+[endsect]
+
+[section Acknowledgments]
+
+The implementation of `core::demangle` was taken from
+`boost/exception/detail/type_info.hpp`, which in turn was adapted
+from `boost/units/detail/utility.hpp` and `boost/log/utility/type_info_wrapper.hpp`.
+
+[endsect]
+
+[endsect]

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/empty_value.qbk

@@ -0,0 +1,140 @@
+[/
+Copyright 2018 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+]
+
+[section:empty_value empty_value]
+
+[simplesect Authors]
+
+* Glen Fernandes
+
+[endsimplesect]
+
+[section Overview]
+
+The header <boost/core/empty_value.hpp> provides the class template
+`boost::empty_value` for library authors to conveniently leverage the Empty
+Base Optimization to store objects of potentially empty types.
+
+[endsect]
+
+[section Examples]
+
+The following example shows `boost::empty_value` used to create a type that
+stores a pointer, comparer, and allocator, where the comparer and allocator
+could be empty types.
+
+```
+template<class Ptr, class Compare, class Allocator>
+class storage
+    : empty_value<Compare, 0>
+    , empty_value<Allocator, 1> {
+public:
+    storage()
+        : empty_value<Compare, 0>(empty_init_t())
+        , empty_value<Allocator, 1>(empty_init_t())
+        , ptr_() { }
+
+    storage(const Compare& c, const Allocator& a)
+        : empty_value<Compare, 0>(empty_init_t(), c)
+        , empty_value<Allocator, 1>(empty_init_t(), a)
+        , ptr_() { }
+
+    const Ptr& pointer() const {
+        return ptr_;
+    }
+
+    Ptr& pointer() {
+        return ptr_;
+    }
+
+    const Compare& compare() const {
+        return empty_value<Compare, 0>::get();
+    }
+
+    Compare& compare() {
+        return empty_value<Compare, 0>::get();
+    }
+
+    const Allocator& allocator() const {
+        return empty_value<Allocator, 1>::get();
+    }
+
+    Allocator& allocator() {
+        return empty_value<Allocator, 1>::get();
+    }
+
+private:
+    Ptr ptr_;
+};
+```
+
+[endsect]
+
+[section Reference]
+
+```
+namespace boost {
+
+struct empty_init_t { };
+
+template<class T, unsigned Index = 0, bool Empty = ``/see below/``>
+class empty_value {
+public:
+    typedef T type;
+
+    empty_value() = default;
+
+    template<class... Args>
+    empty_value(empty_init_t, Args&&... args);
+
+    const T& get() const noexcept;
+
+    T& get() noexcept;
+};
+
+inline constexpr empty_init_t empty_init{ };
+
+} /* boost */
+```
+
+[section Template parameters]
+
+[variablelist
+[[`T`][The type of value to store]]
+[[`Index`][Optional: Specify to create a distinct base type]]
+[[`Empty`][Optional: Specify to force inheritance from type]]]
+
+[endsect]
+
+[section Member types]
+
+[variablelist
+[[`type`][The template parameter `T`]]]
+
+[endsect]
+
+[section Constructors]
+
+[variablelist
+[[`empty_value() = default;`][Default initialize the value]]
+[[`template<class... Args> empty_value(empty_init_t, Args&&... args);`]
+[Initialize the value with `std::forward<Args>(args)...`]]]
+
+[endsect]
+
+[section Member functions]
+
+[variablelist
+[[`const T& get() const noexcept;`][Returns the value]]
+[[`T& get() noexcept;`][Returns the value]]]
+
+[endsect]
+
+[endsect]
+
+[endsect]

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/enable_if.qbk

@@ -0,0 +1,500 @@
+[/
+ / Copyright (c) 2003, 2004 Jaakko Jarvi
+ / Copyright (c) 2008 John Maddock
+ / Copyright (c) 2011, 2013 Jeremiah Willcock
+ / Copyright (c) 2014 Glen Fernandes
+ /
+ / Use, modification, and distribution is subject to the Boost Software
+ / License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+ / http://www.boost.org/LICENSE_1_0.txt)
+ /]
+
+[section:enable_if enable_if]
+
+[simplesect Authors]
+
+* Jaakko J\u00E4rvi
+* Jeremiah Willcock
+* Andrew Lumsdaine
+
+[endsimplesect]
+
+[section Introduction]
+
+The `enable_if` family of templates is a set of tools to allow
+a function template or a class template specialization to
+include or exclude itself from a set of matching functions or
+specializations based on properties of its template arguments.
+For example, one can define function templates that are only
+enabled for, and thus only match, an arbitrary set of types
+defined by a traits class. The `enable_if` templates can also
+be applied to enable class template specializations.
+Applications of `enable_if` are discussed in length in
+[link REF1 \[1\]] and [link REF2 \[2\]].
+
+[section Header <boost/core/enable_if.hpp>]
+
+``
+namespace boost {
+    template <class Cond, class T = void> struct enable_if;
+    template <class Cond, class T = void> struct disable_if;
+    template <class Cond, class T> struct lazy_enable_if;
+    template <class Cond, class T> struct lazy_disable_if;
+
+    template <bool B, class T = void> struct enable_if_c;
+    template <bool B, class T = void> struct disable_if_c;
+    template <bool B, class T> struct lazy_enable_if_c;
+    template <bool B, class T> struct lazy_disable_if_c;
+}
+``
+
+[endsect]
+
+[section Background]
+
+Sensible operation of template function overloading in C++
+relies on the /SFINAE/ (substitution-failure-is-not-an-error)
+principle [link REF3 \[3\]]: if an invalid argument or return
+type is formed during the instantiation of a function template,
+the instantiation is removed from the overload resolution set
+instead of causing a compilation error. The following example, 
+taken from [link REF1 \[1\]], demonstrates why this is
+important:
+
+``
+int negate(int i) { return -i; }
+
+template <class F>
+typename F::result_type negate(const F& f) { return -f(); }
+``
+
+Suppose the compiler encounters the call `negate(1)`. The first
+definition is obviously a better match, but the compiler must
+nevertheless consider (and instantiate the prototypes) of both
+definitions to find this out. Instantiating the latter
+definition with `F` as `int` would result in:
+
+``
+int::result_type negate(const int&);
+``
+
+where the return type is invalid. If this were an error, adding
+an unrelated function template (that was never called) could
+break otherwise valid code. Due to the SFINAE principle the
+above example is not, however, erroneous. The latter definition
+of `negate` is simply removed from the overload resolution set.
+
+The `enable_if` templates are tools for controlled creation of
+the SFINAE conditions.
+
+[endsect]
+
+[endsect]
+
+[section The enable_if templates]
+
+The names of the `enable_if` templates have three parts: an
+optional `lazy_` tag, either `enable_if` or `disable_if`, and
+an optional `_c` tag. All eight combinations of these parts
+are supported. The meaning of the `lazy_` tag is described
+in the section [link
+core.enable_if.using_enable_if.enable_if_lazy below]. The
+second part of the name indicates whether a true condition
+argument should enable or disable the current overload. The
+third part of the name indicates whether the condition
+argument is a `bool` value (`_c` suffix), or a type containing
+a static `bool` constant named `value` (no suffix). The latter
+version interoperates with Boost.MPL.
+
+The definitions of `enable_if_c` and `enable_if` are as follows
+(we use `enable_if` templates  unqualified but they are in the
+`boost` namespace).
+
+``
+template <bool B, class T = void>
+struct enable_if_c {
+    typedef T type;
+};
+
+template <class T>
+struct enable_if_c<false, T> {};
+
+template <class Cond, class T = void>
+struct enable_if : public enable_if_c<Cond::value, T> {};
+``
+
+An instantiation of the `enable_if_c` template with the
+parameter `B` as `true` contains a member type `type`, defined
+to be `T`. If `B` is `false`, no such member is defined. Thus 
+`enable_if_c<B, T>::type` is either a valid or an invalid type
+expression, depending on the value of `B`. When valid,
+`enable_if_c<B, T>::type` equals `T`. The `enable_if_c`
+template can thus be used for controlling when functions are
+considered for overload resolution and when they are not. For
+example, the following function is defined for all arithmetic
+types (according to the classification of the Boost
+*type_traits* library):
+
+``
+template <class T>
+typename enable_if_c<boost::is_arithmetic<T>::value, T>::type 
+foo(T t) { return t; }
+``
+
+The `disable_if_c` template is provided as well, and has the
+same functionality as `enable_if_c` except for the negated
+condition. The following function is enabled for all
+non-arithmetic types.
+
+``
+template <class T>
+typename disable_if_c<boost::is_arithmetic<T>::value, T>::type 
+bar(T t) { return t; }
+``
+
+For easier syntax in some cases and interoperation with
+Boost.MPL we provide versions of the `enable_if` templates
+taking any type with a `bool` member constant named `value` as
+the condition argument. The MPL `bool_`, `and_`, `or_`, and
+`not_` templates are likely to be useful for creating such
+types. Also, the traits classes in the Boost.Type_traits
+library follow this convention. For example, the above example
+function `foo` can be alternatively written as:
+
+``
+template <class T>
+typename enable_if<boost::is_arithmetic<T>, T>::type 
+foo(T t) { return t; }
+``
+
+[endsect]
+
+[section:using_enable_if Using enable_if]
+
+The `enable_if` templates are defined in
+`boost/utility/enable_if.hpp`, which is included by
+`boost/utility.hpp`.
+
+With respect to function templates, `enable_if` can be used in
+multiple different ways:
+
+* As the return type of an instantiatied function
+* As an extra parameter of an instantiated function
+* As an extra template parameter (useful only in a compiler
+  that supports C++0x default arguments for function template
+  parameters, see [link
+  core.enable_if.using_enable_if.enable_if_0x Enabling function
+  templates in C++0x] for details.
+
+In the previous section, the return type form of `enable_if`
+was shown. As an example of using the form of `enable_if` that
+works via an extra function parameter, the `foo` function in
+the previous section could also be written as:
+
+``
+template <class T>
+T foo(T t,
+    typename enable_if<boost::is_arithmetic<T> >::type* dummy = 0); 
+``
+
+Hence, an extra parameter of type `void*` is added, but it is
+given  a default value to keep the parameter hidden from client
+code. Note that the second template argument was not given to
+`enable_if`, as the default `void` gives the desired behavior.
+
+Which way to write the enabler is largely a matter of taste,
+but for certain functions, only a subset of the options is
+possible:
+
+* Many operators have a fixed number of arguments, thus
+  `enable_if` must be used either in the return type or in an
+  extra template parameter.
+* Functions that have a variadic parameter list must use either
+  the return type form or an extra template parameter.
+* Constructors do not have a return type so you must use either
+  an extra function parameter or an extra template parameter.
+* Constructors that have a variadic parameter list must an
+  extra template parameter.
+* Conversion operators can only be written with an extra
+  template parameter.
+
+[section:enable_if_0x Enabling function templates in C++0x]
+
+In a compiler which supports C++0x default arguments for
+function template parameters, you can enable and disable
+function templates by adding an additional template parameter.
+This approach works in all situations where you would use
+either the return type form of `enable_if` or the function
+parameter form, including operators, constructors, variadic
+function templates, and even overloaded conversion operations.
+
+As an example:
+
+``
+#include <boost/type_traits/is_arithmetic.hpp>
+#include <boost/type_traits/is_pointer.hpp>
+#include <boost/utility/enable_if.hpp>
+
+class test
+{
+public:
+    // A constructor that works for any argument list of size 10
+    template< class... T,
+        typename boost::enable_if_c< sizeof...( T ) == 10,
+            int >::type = 0>
+    test( T&&... );
+
+    // A conversion operation that can convert to any arithmetic type
+    template< class T,
+        typename boost::enable_if< boost::is_arithmetic< T >,
+            int >::type = 0>
+    operator T() const;
+
+    // A conversion operation that can convert to any pointer type
+    template< class T,
+        typename boost::enable_if< boost::is_pointer< T >,
+            int >::type = 0>
+    operator T() const;
+};
+
+int main()
+{
+    // Works
+    test test_( 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 );
+
+    // Fails as expected
+    test fail_construction( 1, 2, 3, 4, 5 );
+
+    // Works by calling the conversion operator enabled for arithmetic types
+    int arithmetic_object = test_;
+
+    // Works by calling the conversion operator enabled for pointer types
+    int* pointer_object = test_;
+
+    // Fails as expected
+    struct {} fail_conversion = test_;
+}
+``
+
+[endsect]
+
+[section Enabling template class specializations]
+
+Class template specializations can be enabled or disabled with
+`enable_if`. One extra template parameter needs to be added for
+the enabler expressions. This parameter has the default value
+`void`. For example:
+
+``
+template <class T, class Enable = void> 
+class A { ... };
+
+template <class T>
+class A<T, typename enable_if<is_integral<T> >::type> { ... };
+
+template <class T>
+class A<T, typename enable_if<is_float<T> >::type> { ... };
+``
+
+Instantiating `A` with any integral type matches the first
+specialization, whereas any floating point type matches the
+second one. All other types match the primary template.
+The condition can be any compile-time boolean expression that
+depends on the template arguments of the class. Note that
+again, the second argument to `enable_if` is not needed; the
+default (`void`) is the correct value.
+
+The `enable_if_has_type` template is usable this scenario but instead of
+using a type traits to enable or disable a specialization, it use a
+SFINAE context to check for the existence of a dependent type inside
+its parameter. For example, the following structure extracts a dependent
+`value_type` from T if and only if `T::value_type` exists.
+
+``
+template <class T, class Enable = void>
+class value_type_from
+{
+  typedef T type;
+};
+
+template <class T>
+class value_type_from<T, typename enable_if_has_type<typename T::value_type>::type>
+{
+  typedef typename T::value_type type;
+};
+``
+
+[endsect]
+
+[section Overlapping enabler conditions]
+
+Once the compiler has examined the enabling conditions and
+included the function into the overload resolution set, normal
+C++ overload resolution rules are used to select the best
+matching function. In particular, there is no ordering between
+enabling conditions. Function templates with enabling
+conditions that are not mutually exclusive can lead to
+ambiguities. For example:
+
+``
+template <class T>
+typename enable_if<boost::is_integral<T>, void>::type 
+foo(T t) {}
+
+template <class T>
+typename enable_if<boost::is_arithmetic<T>, void>::type 
+foo(T t) {}
+``
+
+All integral types are also arithmetic. Therefore, say, for the
+call `foo(1)`, both conditions are true and both functions are
+thus in the overload resolution set. They are both equally good
+matches and thus ambiguous. Of course, more than one enabling
+condition can be simultaneously true as long as other arguments
+disambiguate the functions.
+
+The above discussion applies to using `enable_if` in class
+template partial specializations as well.
+
+[endsect]
+
+[section:enable_if_lazy Lazy enable_if]
+
+In some cases it is necessary to avoid instantiating part of a
+function signature unless an enabling condition is true. For
+example:
+
+``
+template <class T, class U> class mult_traits;
+
+template <class T, class U>
+typename enable_if<is_multipliable<T, U>,
+    typename mult_traits<T, U>::type>::type
+operator*(const T& t, const U& u) { ... }
+``
+
+Assume the class template `mult_traits` is a traits class
+defining  the resulting type of a multiplication operator. The
+`is_multipliable` traits class specifies for which types to
+enable the operator. Whenever `is_multipliable<A, B>::value` is
+`true` for some types `A` and `B`, then
+`mult_traits<A, B>::type` is defined.
+
+Now, trying to invoke (some other overload) of `operator*`
+with, say, operand types `C` and `D` for which
+`is_multipliable<C, D>::value` is `false` and
+`mult_traits<C, D>::type` is not defined is an error on some
+compilers. The SFINAE principle is not applied because the
+invalid type occurs as an argument to another template. The
+`lazy_enable_if` and `lazy_disable_if` templates (and their
+`_c` versions) can be used in such situations:
+
+``
+template<class T, class U>
+typename lazy_enable_if<is_multipliable<T, U>,
+    mult_traits<T, U> >::type
+operator*(const T& t, const U& u) { ... }
+
+``The second argument of `lazy_enable_if` must be a class type
+that defines a nested type named `type` whenever the first
+parameter (the condition) is true.
+
+[note Referring to one member type or static constant in a
+traits class causes all of the members (type and static
+constant) of that specialization to be instantiated.
+Therefore, if your traits classes can sometimes contain invalid
+types, you should use two distinct templates for describing the
+conditions and the type mappings. In the above example,
+`is_multipliable<T, U>::value` defines when
+`mult_traits<T, U>::type` is valid.]
+
+[endsect]
+
+[section Compiler workarounds]
+
+Some compilers flag functions as ambiguous if the only
+distinguishing factor is a different condition in an enabler
+(even though the functions could never be ambiguous). For
+example, some compilers (e.g. GCC 3.2) diagnose the following
+two functions as ambiguous:
+
+``
+template <class T>
+typename enable_if<boost::is_arithmetic<T>, T>::type 
+foo(T t);
+
+template <class T>
+typename disable_if<boost::is_arithmetic<T>, T>::type 
+foo(T t);
+``
+
+Two workarounds can be applied:
+
+* Use an extra dummy parameter which disambiguates the
+  functions. Use a default value for it to hide the parameter
+  from the caller. For example:  
+  ``
+  template <int> struct dummy { dummy(int) {} };
+  
+  template <class T>
+  typename enable_if<boost::is_arithmetic<T>, T>::type 
+  foo(T t, dummy<0> = 0);
+  
+  template <class T>
+  typename disable_if<boost::is_arithmetic<T>, T>::type 
+  foo(T t, dummy<1> = 0);
+  ``
+* Define the functions in different namespaces and bring them
+  into a common namespace with `using` declarations:
+  ``
+  namespace A {
+      template <class T>
+      typename enable_if<boost::is_arithmetic<T>, T>::type 
+      foo(T t);
+  }
+  
+  namespace B {
+      template <class T>
+      typename disable_if<boost::is_arithmetic<T>, T>::type 
+      foo(T t);
+  }
+  
+  using A::foo;
+  using B::foo;
+  ``
+  Note that the second workaround above cannot be used for
+  member templates. On the other hand, operators do not accept
+  extra arguments, which makes the first workaround unusable.
+  As the net effect, neither of the workarounds are of
+  assistance for templated operators that need to be defined as
+  member functions (assignment and subscript operators).
+
+[endsect]
+
+[endsect]
+
+[section Acknowledgements]
+
+We are grateful to Howard Hinnant, Jason Shirk, Paul
+Mensonides, and Richard Smith whose findings have
+influenced the library.
+
+[endsect]
+
+[section References]
+
+* [#REF1] \[1\] Jaakko J\u00E4rvi, Jeremiah Willcock, Howard
+  Hinnant, and Andrew Lumsdaine. Function overloading based on
+  arbitrary properties of types. /C++ Users Journal/,
+  21(6):25--32, June 2003.
+* [#REF2] \[2\] Jaakko J\u00E4rvi, Jeremiah Willcock, and
+  Andrew Lumsdaine. Concept-controlled polymorphism. In Frank
+  Pfennig and Yannis Smaragdakis, editors, /Generative
+  Programming and Component Engineering/, volume 2830 of
+  /LNCS/, pages 228--244. Springer Verlag, September 2003.
+* [#REF3] \[3\] David Vandevoorde and Nicolai M. Josuttis.
+  /C++ Templates: The Complete Guide/. Addison-Wesley, 2002.
+
+[endsect]
+
+[endsect]

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/exchange.qbk

@@ -0,0 +1,63 @@
+[/
+Copyright 2018 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+]
+
+[section:exchange exchange]
+
+[simplesect Authors]
+
+* Glen Fernandes
+
+[endsimplesect]
+
+[section Overview]
+
+The header <boost/core/exchange.hpp> provides the function template
+`boost::exchange` which is an implementation of the `std::exchange`
+function introduced in C++14. `boost::exchange(o, v)` replaces the
+value of `o` with `v` and returns the old value of `o`.
+
+[endsect]
+
+[section Examples]
+
+The following example shows `boost::exchange` used to simplify the
+implementation of a move constructor.
+
+```
+Node(Node&& other)
+  : head_(boost::exchange(other.head_, nullptr))
+  , tail_(boost::exchange(other.tail_, nullptr)) { }
+```
+
+[endsect]
+
+[section Reference]
+
+```
+namespace boost {
+  template<class T, class U = T>
+  constexpr T exchange(T& t, U&& u);
+}
+```
+[section Functions]
+
+[*`template<class T, class U = T> constexpr T exchange(T& t, U&& u);`]
+
+Equivalent to:
+
+```
+T v = std::move(t);
+t = std::forward<U>(u);
+return v;
+```
+
+[endsect]
+
+[endsect]
+
+[endsect]

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/explicit_operator_bool.qbk

@@ -0,0 +1,86 @@
+[/
+ / Copyright (c) 2013 Andrey Semashev
+ /
+ / Distributed under the Boost Software License, Version 1.0. (See accompanying
+ / file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ /]
+
+[section:explicit_operator_bool explicit_operator_bool]
+
+[/=================]
+[simplesect Authors]
+[/=================]
+
+* Andrey Semashev
+
+[endsimplesect]
+
+[/===============]
+[section Overview]
+[/===============]
+
+Header `<boost/core/explicit_operator_bool.hpp>` provides
+`BOOST_EXPLICIT_OPERATOR_BOOL()`, `BOOST_EXPLICIT_OPERATOR_BOOL_NOEXCEPT()`
+and `BOOST_CONSTEXPR_EXPLICIT_OPERATOR_BOOL()` compatibility helper macros
+that expand to an explicit conversion operator to `bool`. For compilers not
+supporting explicit conversion operators introduced in C++11 the macros expand
+to a conversion operator that implements the
+[@http://en.wikibooks.org/wiki/More_C%2B%2B_Idioms/Safe_bool safe bool idiom].
+In case if the compiler is not able to handle safe bool idiom well the macros
+expand to a regular conversion operator to `bool`.
+
+[endsect]
+
+[/===============]
+[section Examples]
+[/===============]
+
+Both macros are intended to be placed within a user's class definition. The
+generated conversion operators will be implemented in terms of `operator!()`
+that should be defined by user in this class. In case of
+`BOOST_CONSTEXPR_EXPLICIT_OPERATOR_BOOL()` the generated conversion operator
+will be declared `constexpr` which requires the corresponding `operator!()`
+to also be `constexpr`.
+
+``
+template< typename T >
+class my_ptr
+{
+    T* m_p;
+
+public:
+    BOOST_EXPLICIT_OPERATOR_BOOL()
+
+    bool operator!() const
+    {
+        return !m_p;
+    }
+};
+``
+
+Now `my_ptr` can be used in conditional expressions, similarly to a regular pointer:
+
+``
+my_ptr< int > p;
+if (p)
+    std::cout << "true" << std::endl;
+``
+
+[endsect]
+
+[/==============]
+[section History]
+[/==============]
+
+[heading boost 1.56]
+
+* Added new macros `BOOST_EXPLICIT_OPERATOR_BOOL_NOEXCEPT` and `BOOST_CONSTEXPR_EXPLICIT_OPERATOR_BOOL` to define `noexcept` and `constexpr` operators.
+* The header moved to Boost.Core.
+
+[heading boost 1.55]
+
+* The macro was extracted from Boost.Log.
+
+[endsect]
+
+[endsect]

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/first_scalar.qbk

@@ -0,0 +1,91 @@
+[/
+Copyright 2019 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+]
+
+[section:first_scalar first_scalar]
+
+[simplesect Authors]
+
+* Glen Fernandes
+
+[endsimplesect]
+
+[section Overview]
+
+The header <boost/core/first_scalar.hpp> provides the function templates
+`boost::first_scalar` that can be used to obtain a pointer to the first scalar
+element of an array. Given a pointer of type `T*` they return a pointer of
+type `remove_all_extents_t<T>*`. The functions are `constexpr` and can be used
+in constant expressions.
+
+[endsect]
+
+[section Examples]
+
+The following function uses an allocator to allocate an array of arrays and
+constructs each scalar element in it.
+
+```
+#include <boost/alloc_construct.hpp>
+#include <boost/first_scalar.hpp>
+
+template<class A>
+auto create(const A& allocator)
+{
+    typename std::allocator_traits<A>::template
+        rebind_alloc<int[2][3]> other(allocator);
+    auto ptr = other.allocate(4);
+    try {
+        boost::alloc_construct_n(other,
+            boost::first_scalar(boost::to_address(ptr)), 24);
+    } catch (...) {
+        other.deallocate(ptr, 4);
+        throw;
+    }
+    return ptr;
+}
+```
+
+[endsect]
+
+[section Reference]
+
+```
+namespace boost {
+
+template<class T>
+constexpr T* first_scalar(T* p) noexcept;
+
+template<class T, std::size_t N>
+constexpr auto first_scalar(T (*p)[N]) noexcept;
+
+} /* boost */
+```
+
+[section Functions]
+
+[variablelist
+[[`template<class T> constexpr T* first_scalar(T* p) noexcept;`]
+[[variablelist
+[[Returns][`p`.]]]]]
+[[`template<class T, std::size_t N> constexpr auto first_scalar(T (*p)[N])
+noexcept;`]
+[[variablelist
+[[Returns][`first_scalar(&(*p)[0])`.]]]]]]
+
+[endsect]
+
+[endsect]
+
+[section History]
+
+Glen Fernandes implemented `first_scalar`. Peter Dimov suggested a change for
+GCC to support an additional `constexpr` use.
+
+[endsect]
+
+[endsect]

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/ignore_unused.qbk

@@ -0,0 +1,60 @@
+[/
+  Copyright 2014 Adam Wulkiewicz
+
+  Distributed under the Boost Software License, Version 1.0.
+
+  See accompanying file LICENSE_1_0.txt
+  or copy at http://boost.org/LICENSE_1_0.txt
+]
+
+[section:ignore_unused ignore_unused]
+
+[simplesect Authors]
+
+* Adam Wulkiewicz
+
+[endsimplesect]
+
+[section Header <boost/core/ignore_unused.hpp>]
+
+The header `<boost/core/ignore_unused.hpp>` defines the function template
+`boost::ignore_unused()`. It may be used to suppress the "unused variable" or
+"unused local typedefs" compiler warnings when the variable or typedef
+can't be removed or commented out, e.g. when some blocks of the code are
+conditionally activated. C++11 variadic templates are used if they're supported,
+otherwise they're emulated with overloads.
+
+[section Usage]
+
+``
+boost::ignore_unused(v1, v2, v3);
+boost::ignore_unused<T1, T2, T3>();
+``
+
+[endsect]
+
+[section Example]
+
+``
+int fun( int foo, int bar )
+{
+    boost::ignore_unused(bar);
+#ifdef ENABLE_DEBUG_OUTPUT
+    if ( foo < bar )
+        std::cerr << "warning! foo < bar";
+#endif
+    return foo + 2;
+}
+``
+
+[endsect]
+
+[endsect]
+
+[section Acknowledgments]
+
+`boost::ignore_unused()` was contributed by Adam Wulkiewicz.
+
+[endsect]
+
+[endsect]

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/is_same.qbk

@@ -0,0 +1,69 @@
+[/
+  Copyright 2014 Peter Dimov
+
+  Distributed under the Boost Software License, Version 1.0.
+
+  See accompanying file LICENSE_1_0.txt
+  or copy at http://boost.org/LICENSE_1_0.txt
+]
+
+[section:is_same is_same]
+
+[simplesect Authors]
+
+* Peter Dimov
+
+[endsimplesect]
+
+[section Header <boost/core/is_same.hpp>]
+
+The header `<boost/core/is_same.hpp>` defines the class template
+`boost::core::is_same<T1,T2>`. It defines a nested integral constant
+`value` which is `true` when `T1` and `T2` are the same type, and
+`false` when they are not.
+
+In tandem with `BOOST_TEST_TRAIT_TRUE` and `BOOST_TEST_TRAIT_FALSE`,
+`is_same` is useful for writing tests for traits classes that have
+to define specific nested types.
+
+[section Synopsis]
+
+``
+namespace boost
+{
+
+namespace core
+{
+    template<class T1, class T2> struct is_same;
+}
+
+}
+``
+
+[endsect]
+
+[section Example]
+
+``
+#include <boost/core/lightweight_test_trait.hpp>
+#include <boost/core/is_same.hpp>
+
+template<class T> struct X
+{
+    typedef T& type;
+};
+
+using boost::core::is_same;
+
+int main()
+{
+    BOOST_TEST_TRAIT_TRUE(( is_same<X<int>::type, int&> ));
+    return boost::report_errors();
+}
+``
+
+[endsect]
+
+[endsect]
+
+[endsect]

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/lightweight_test.qbk

@@ -0,0 +1,352 @@
+[/
+  Copyright 2010, 2011 Beman Dawes
+  Copyright 2013 Ion Gaztanaga
+  Copyright 2014-2019 Peter Dimov
+  Copyright 2017 Kohei Takahashi
+
+  Distributed under the Boost Software License, Version 1.0.
+
+  See accompanying file LICENSE_1_0.txt
+  or copy at http://boost.org/LICENSE_1_0.txt
+]
+
+[section:lightweight_test lightweight_test]
+
+[simplesect Authors]
+
+* Peter Dimov
+* Beman Dawes
+
+[endsimplesect]
+
+[section Header <boost/core/lightweight_test.hpp>]
+
+The header `<boost/core/lightweight_test.hpp>` is a
+lightweight test framework. It's useful for writing
+Boost regression tests for components that are dependencies
+of Boost.Test.
+
+When using `lightweight_test.hpp`, *do not forget* to
+`return boost::report_errors()` from `main`.
+
+[section Synopsis]
+
+``
+#define BOOST_TEST(expression) /*unspecified*/
+#define BOOST_TEST_NOT(expression) /*unspecified*/
+#define BOOST_ERROR(message) /*unspecified*/
+#define BOOST_TEST_EQ(expr1, expr2) /*unspecified*/
+#define BOOST_TEST_NE(expr1, expr2) /*unspecified*/
+#define BOOST_TEST_LT(expr1, expr2) /*unspecified*/
+#define BOOST_TEST_LE(expr1, expr2) /*unspecified*/
+#define BOOST_TEST_GT(expr1, expr2) /*unspecified*/
+#define BOOST_TEST_GE(expr1, expr2) /*unspecified*/
+#define BOOST_TEST_CSTR_EQ(expr1, expr2) /*unspecified*/
+#define BOOST_TEST_CSTR_NE(expr1, expr2) /*unspecified*/
+#define BOOST_TEST_WITH(expr1, expr2, pred) /*unspecified*/
+#define BOOST_TEST_ALL_EQ(begin1, end1, begin2, end2) /* unspecified */
+#define BOOST_TEST_ALL_WITH(begin1, end1, begin2, end2, predicate) /* unspecified */
+#define BOOST_TEST_THROWS(expr, excep) /*unspecified*/
+#define BOOST_TEST_NO_THROW(expr) /*unspecified*/
+
+namespace boost
+{
+    int report_errors();
+}
+``
+
+[endsect]
+
+[section BOOST_TEST]
+
+``
+BOOST_TEST(expression)
+``
+
+If expression is false increases the error count and outputs a
+message containing `expression`.
+
+[endsect]
+
+[section BOOST_TEST_NOT]
+
+``
+BOOST_TEST_NOT(expression)
+``
+
+If expression is true increases the error count and outputs a
+message containing `!(expression)`.
+
+[endsect]
+
+[section BOOST_ERROR]
+
+``
+BOOST_ERROR(message)
+``
+
+Increases error count and outputs a message containing
+`message`.
+
+[endsect]
+
+[section BOOST_TEST_EQ]
+
+``
+BOOST_TEST_EQ(expr1, expr2)
+``
+
+If `expr1 == expr2` is not true increases the error count and outputs a
+message containing both expressions.
+
+[endsect]
+
+[section BOOST_TEST_NE]
+
+``
+BOOST_TEST_NE(expr1, expr2)
+``
+
+If `expr1 != expr2` is not true increases the error count and outputs a
+message containing both expressions.
+
+[endsect]
+
+[section BOOST_TEST_LT]
+
+``
+BOOST_TEST_LT(expr1, expr2)
+``
+
+If `expr1 < expr2` is not true increases the error count and outputs a
+message containing both expressions.
+
+[endsect]
+
+[section BOOST_TEST_LE]
+
+``
+BOOST_TEST_LE(expr1, expr2)
+``
+
+If `expr1 <= expr2` is not true increases the error count and outputs a
+message containing both expressions.
+
+[endsect]
+
+[section BOOST_TEST_GT]
+
+``
+BOOST_TEST_GT(expr1, expr2)
+``
+
+If `expr1 > expr2` is not true increases the error count and outputs a
+message containing both expressions.
+
+[endsect]
+
+[section BOOST_TEST_GE]
+
+``
+BOOST_TEST_GE(expr1, expr2)
+``
+
+If `expr1 >= expr2` is not true increases the error count and outputs a
+message containing both expressions.
+
+[endsect]
+
+[section BOOST_TEST_CSTR_EQ]
+
+``
+BOOST_TEST_CSTR_EQ(expr1, expr2)
+``
+
+Specialization of `BOOST_TEST_EQ` which interprets `expr1` and `expr2` as pointers to null-terminated byte strings (C strings). If `std::strcmp(expr1, expr2) != 0`, increase the error count and output a message containing both expressions.
+
+[endsect]
+
+[section BOOST_TEST_CSTR_NE]
+
+``
+BOOST_TEST_CSTR_NE(expr1, expr2)
+``
+
+Specialization of `BOOST_TEST_NE` which interprets `expr1` and `expr2` as pointers to null-terminated byte strings (C strings). If `std::strcmp(expr1, expr2) == 0`, increase the error count and output a message containing both expressions.
+
+[endsect]
+
+[section BOOST_TEST_WITH]
+
+``
+BOOST_TEST_WITH(expr1, expr2, pred)
+``
+
+If `pred(expr1, expr2)` is not true increases the error count and outputs a
+message containing both expressions.
+
+[endsect]
+
+[section BOOST_TEST_ALL_EQ]
+
+``
+BOOST_TEST_ALL_EQ(begin1, end1, begin2, end2)
+``
+
+Compares the content of two sequences. If they have different sizes, or if any pairwise element differs, increases the error count and outputs a message containing at most 8 differing elements.
+
+[endsect]
+
+[section BOOST_TEST_ALL_WITH]
+
+``
+BOOST_TEST_ALL_WITH(begin1, end1, begin2, end2, predicate)
+``
+
+Compares the content of two sequences. If they have different sizes, or if any pairwise element do not fulfill the binary predicate, increases the error count and outputs a message containing at most 8 differing elements.
+
+[endsect]
+
+[section BOOST_TEST_THROWS]
+
+``
+BOOST_TEST_THROWS(expr, excep)
+``
+
+If `BOOST_NO_EXCEPTIONS` is *not* defined and if `expr` does not
+throw an exception of type `excep`, increases the error count
+and outputs a message containing the expression.
+
+If `BOOST_NO_EXCEPTIONS` is defined, this macro expands to
+nothing and `expr` is not evaluated.
+
+[endsect]
+
+[section BOOST_TEST_NO_THROW]
+
+``
+BOOST_TEST_NO_THROW(expr)
+``
+
+If `BOOST_NO_EXCEPTIONS` is *not* defined and if `expr` throws an exception,
+increases the error count and outputs a message containing the expression
+and (if possible) the exception message.
+
+If `BOOST_NO_EXCEPTIONS` is defined, `expr` is evaluated.
+
+[endsect]
+
+[section report_errors]
+
+``
+int boost::report_errors()
+``
+
+Return the error count from `main`.
+
+[endsect]
+
+[section Example]
+
+``
+#include <boost/core/lightweight_test.hpp>
+
+int sqr( int x )
+{
+    return x * x;
+}
+
+int main()
+{
+    BOOST_TEST( sqr(2) == 4 );
+    BOOST_TEST_EQ( sqr(-3), 9 );
+
+    return boost::report_errors();
+}
+``
+
+[endsect]
+
+[endsect]
+
+[section Header <boost/core/lightweight_test_trait.hpp>]
+
+The header `<boost/core/lightweight_test_trait.hpp>` defines
+a couple of extra macros for testing compile-time traits that
+return a boolean value.
+
+[section Synopsis]
+
+``
+#define BOOST_TEST_TRAIT_TRUE((Trait)) /*unspecified*/
+#define BOOST_TEST_TRAIT_FALSE((Trait)) /*unspecified*/
+#define BOOST_TEST_TRAIT_SAME(Type1, Type2) /*unspecified*/
+``
+
+[endsect]
+
+[section BOOST_TEST_TRAIT_TRUE]
+
+``
+BOOST_TEST_TRAIT_TRUE((Trait))
+``
+
+If `Trait::value != true` increases the error count and outputs a
+message containing `Trait`. Note the double set of parentheses; these
+enable `Trait` to contain a comma, which is common for templates.
+
+[endsect]
+
+[section BOOST_TEST_TRAIT_FALSE]
+
+``
+BOOST_TEST_TRAIT_FALSE((Trait))
+``
+
+If `Trait::value != false` increases the error count and outputs a
+message containing `Trait`. Note the double set of parentheses.
+
+[endsect]
+
+[section BOOST_TEST_TRAIT_SAME]
+
+``
+BOOST_TEST_TRAIT_SAME(Type1, Type2)
+``
+
+If the two types are not the same, increases the error count and outputs a
+message containing them. This macro requires that the compiler supports
+variadic macros and `__VA_ARGS__`. (Note that unlike `BOOST_TEST_TRAIT_TRUE`
+and `BOOST_TEST_TRAIT_FALSE`, this macro only requires a single set of
+parentheses.)
+
+[endsect]
+
+[section Example]
+
+``
+#include <boost/core/lightweight_test_trait.hpp>
+#include <boost/core/is_same.hpp>
+
+template<class T, class U> struct X
+{
+    typedef T type;
+};
+
+using boost::core::is_same;
+
+int main()
+{
+    BOOST_TEST_TRAIT_TRUE(( is_same<X<int, long>::type, int> ));
+
+    BOOST_TEST_TRAIT_SAME( X<int, long>::type, int );
+
+    return boost::report_errors();
+}
+``
+
+[endsect]
+
+[endsect]
+
+[endsect]

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/no_exceptions_support.qbk

@@ -0,0 +1,87 @@
+[/
+  Copyright 2004 Pavel Vozenilek
+  Copyright 2014 Peter Dimov
+
+  Distributed under the Boost Software License, Version 1.0.
+
+  See accompanying file LICENSE_1_0.txt
+  or copy at http://boost.org/LICENSE_1_0.txt
+]
+
+[section:no_exceptions_support no_exceptions_support]
+
+[simplesect Authors]
+
+* Pavel Vozenilek
+
+[endsimplesect]
+
+[section Header <boost/core/no_exceptions_support.hpp>]
+
+The header `<boost/core/no_exceptions_support.hpp>` defines
+macros for use in code that needs to be portable to environments
+that do not have support for C++ exceptions.
+
+[section Synopsis]
+
+``
+#define BOOST_TRY /*unspecified*/
+#define BOOST_CATCH(x) /*unspecified*/
+#define BOOST_CATCH_END /*unspecified*/
+#define BOOST_RETHROW /*unspecified*/
+``
+
+[endsect]
+
+[section Example Use]
+
+``
+void foo() {
+  BOOST_TRY {
+    ...
+  } BOOST_CATCH(const std::bad_alloc&) {
+      ...
+      BOOST_RETHROW
+  } BOOST_CATCH(const std::exception& e) {
+      ...
+  }
+  BOOST_CATCH_END
+}
+``
+
+With exception support enabled it will expand into:
+
+``
+void foo() {
+  { try {
+    ...
+  } catch (const std::bad_alloc&) {
+      ...
+      throw;
+  } catch (const std::exception& e) {
+      ...
+  }
+  }
+}
+``
+
+With exception support disabled it will expand into:
+
+``
+void foo() {
+  { if(true) {
+    ...
+  } else if (false) {
+      ...
+  } else if (false)  {
+      ...
+  }
+  }
+}
+``
+
+[endsect]
+
+[endsect]
+
+[endsect]

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/noinit_adaptor.qbk

@@ -0,0 +1,163 @@
+[/
+Copyright 2019 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+]
+
+[section:noinit_adaptor noinit_adaptor]
+
+[simplesect Authors]
+
+* Glen Fernandes
+
+[endsimplesect]
+
+[section Overview]
+
+The header <boost/core/noinit_adaptor.hpp> provides the class
+template `boost::noinit_adaptor` that converts any allocator into
+one whose `construct(ptr)` performs default initialization via placement new,
+and whose `destroy(ptr)` invokes `value_type` destructor directly.
+
+[endsect]
+
+[section Examples]
+
+The following example shows use of this allocator adaptor to achieve default
+initialization of elements of a trivial type, which are later assigned values.
+
+```
+#include <boost/core/noinit_adaptor.hpp>
+#include <numeric>
+#include <vector>
+
+int main()
+{
+    std::vector<int, boost::noinit_adaptor<std::allocator<int> > > v(5);
+    std::iota(v.begin(), v.end(), 1);
+}
+```
+
+The `allocate_shared_noinit` function templates are now implemented simply
+using `allocate_shared` with `noinit_adaptor`.
+
+```
+template<class T, class A>
+enable_if_t<is_unbounded_array_v<T>, shared_ptr<T> >
+allocate_shared_noinit(const A& a, size_t n)
+{
+    return allocate_shared<T>(boost::noinit_adapt(a), n);
+}
+
+template<class T, class A>
+enable_if_t<!is_unbounded_array_v<T>, shared_ptr<T> >
+allocate_shared_noinit(const A& a)
+{
+    return allocate_shared<T>(boost::noinit_adapt(a));
+}
+```
+
+[endsect]
+
+[section Reference]
+
+```
+namespace boost {
+
+template<class A>
+struct noinit_adaptor
+    : A {
+    template<class U>
+    struct rebind {
+        typedef noinit_adaptor<allocator_rebind_t<A, U> > other;
+    };
+
+    noinit_adaptor() noexcept;
+
+    template<class U>
+    noinit_adaptor(U&& u) noexcept;
+
+    template<class U>
+    noinit_adaptor(const noinit_adaptor<U>& u) noexcept;
+
+    template<class U>
+    void construct(U* p);
+
+    template<class U>
+    void destroy(U* p);
+};
+
+template<class T, class U>
+bool operator==(const noinit_adaptor<T>& lhs,
+    const noinit_adaptor<U>& rhs) noexcept;
+
+template<class T, class U>
+bool operator!=(const noinit_adaptor<T>& lhs,
+    const noinit_adaptor<U>& rhs) noexcept;
+
+template<class A>
+noinit_adaptor<A> noinit_adapt(const A& a) noexcept;
+
+} /* boost */
+```
+
+[section Constructors]
+
+[variablelist
+[[`noinit_adaptor() noexcept;`]
+[[variablelist
+[[Effects][Value initializes the A base class.]]]]]
+[[`template<class U> noinit_adaptor(U&& u) noexcept;`]
+[[variablelist
+[[Requires][`A` shall be constructible from `U`.]]
+[[Effects][Initializes the `A` base class with `std::forward<U>(u)`.]]]]]
+[[`template<class U> noinit_adaptor(const noinit_adaptor<U>& u) noexcept;`]
+[[variablelist
+[[Requires][`A` shall be constructible from `U`.]]
+[[Effects][Initializes the `A` base class with
+`static_cast<const A&>(u)`.]]]]]]
+
+[endsect]
+
+[section Member functions]
+
+[variablelist
+[[`template<class U> void construct(U* p);`]
+[[variablelist
+[[Effects][`::new((void*)p) U`.]]]]]
+[[`template<class U> void destroy(U* p);`]
+[[variablelist
+[[Effects][`p->~U()`.]]]]]]
+
+[endsect]
+
+[section Operators]
+
+[variablelist
+[[`template<class T, class U> constexpr bool
+operator==(const noinit_adaptor<T>& lhs,
+const noinit_adaptor<U>& rhs) noexcept;`]
+[[variablelist
+[[Returns][`static_cast<const T&>(lhs) == static_cast<const U&>(rhs)`.]]]]]
+[[`template<class T, class U> constexpr bool
+operator!=(const noinit_adaptor<T>& lhs,
+const noinit_adaptor<U>& rhs) noexcept;`]
+[[variablelist
+[[Returns][`!(lhs == rhs)`.]]]]]]
+
+[endsect]
+
+[section Free functions]
+
+[variablelist
+[[`template<class A> noinit_adaptor<A> noinit_adapt(const A& a) noexcept;`]
+[[variablelist
+[[Returns][`noinit_adaptor<A>(a)`.]]]]]]
+
+[endsect]
+
+[endsect]
+
+[endsect]

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/noncopyable.qbk

@@ -0,0 +1,72 @@
+[/
+  Copyright 1999-2003 Beman Dawes
+  Copyright 2014 Peter Dimov
+
+  Distributed under the Boost Software License, Version 1.0.
+
+  See accompanying file LICENSE_1_0.txt
+  or copy at http://boost.org/LICENSE_1_0.txt
+]
+
+[section:noncopyable noncopyable]
+
+[simplesect Authors]
+
+* Dave Abrahams
+
+[endsimplesect]
+
+[section Header <boost/core/noncopyable.hpp>]
+
+The header `<boost/core/noncopyable.hpp>` defines the class
+`boost::noncopyable`. It is intended to be used as a private
+base class. `boost::noncopyable` has private (under C++03) or
+deleted (under C++11) copy constructor and a copy assignment
+operator and can't be copied or assigned; a class that derives
+from it inherits these properties.
+
+`boost::noncopyable` was originally contributed by Dave
+Abrahams.
+
+[section Synopsis]
+
+``
+namespace boost
+{
+    class noncopyable;
+}
+``
+
+[endsect]
+
+[section Example]
+
+``
+#include <boost/core/noncopyable.hpp>
+
+class X: private boost::noncopyable
+{
+};
+``
+
+[endsect]
+
+[section Rationale]
+
+Class noncopyable has protected constructor and destructor members to emphasize
+that it is to be used only as a base class. Dave Abrahams notes concern about
+the effect on compiler optimization of adding (even trivial inline) destructor
+declarations. He says:
+
+["Probably this concern is misplaced, because `noncopyable` will be used mostly
+for classes which own resources and thus have non-trivial destruction semantics.]
+
+With C++2011, using an optimized and trivial constructor and similar destructor
+can be enforced by declaring both and marking them `default`. This is done in
+the current implementation.
+
+[endsect]
+
+[endsect]
+
+[endsect]

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/null_deleter.qbk

@@ -0,0 +1,34 @@
+[/
+ / Copyright (c) 2014 Andrey Semashev
+ /
+ / Distributed under the Boost Software License, Version 1.0. (See accompanying
+ / file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ /]
+
+[section:null_deleter null_deleter]
+
+[simplesect Authors]
+
+* Andrey Semashev
+
+[endsimplesect]
+
+[section Header <boost/core/null_deleter.hpp>]
+
+The header `<boost/core/null_deleter.hpp>` defines the `boost::null_deleter` function object,
+which can be used as a deleter with smart pointers such as `unique_ptr` or `shared_ptr`. The
+deleter doesn't do anything with the pointer provided upon deallocation, which makes it useful
+when the pointed object is deallocated elsewhere.
+
+[section Example]
+``
+std::shared_ptr< std::ostream > make_stream()
+{
+    return std::shared_ptr< std::ostream >(&std::cout, boost::null_deleter());
+}
+``
+[endsect]
+
+[endsect]
+
+[endsect]

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/nvp.qbk

@@ -0,0 +1,108 @@
+[/
+Copyright 2019 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+]
+
+[section:nvp nvp]
+
+[section Overview]
+
+The header <boost/core/nvp.hpp> provides the class template `boost::nvp` that
+pairs a name (`const char*`) with the address of a value (`T*`). It is the new
+implementation of the NVP type previously provided by the Boost Serialization
+library. This type now lives in the Core library so that other Boost libraries
+can support named value serialization without taking a dependency on the
+Serialization library.
+
+[endsect]
+
+[section Examples]
+
+The following snippet shows use in a member serialize function:
+
+```
+template<class A>
+void serialize(A& archive, unsigned)
+{
+    archive & boost::make_nvp("x", x_) & boost::make_nvp("y", y_);
+}
+```
+
+[endsect]
+
+[section Reference]
+
+```
+namespace boost {
+
+template<class T>
+class nvp {
+public:
+    nvp(const char* name, T& value) noexcept;
+
+    const char* name() const noexcept;
+
+    T& value() const noexcept;
+
+    const T& const_value() const noexcept;
+};
+
+template<class T>
+const nvp<T> make_nvp(const char* name, T& value) noexcept;
+
+} /* boost */
+
+#define BOOST_NVP(object) ``['see below]``
+```
+
+[section Constructors]
+
+[variablelist
+[[`nvp(const char* name, T& value) noexcept;`]
+[Initializes the stored name pointer with `name` and the value pointer with
+`addressof(value)`.]]]
+
+[endsect]
+
+[section Members]
+
+[variablelist
+[[`const char* name() const noexcept;`]
+[Returns a pointer to the name.]]
+[[`T& value() const noexcept;`]
+[Returns a reference to the value.]]
+[[`const T& const_value() const noexcept;`]
+[Returns a reference to the value.]]]
+
+[endsect]
+
+[section Functions]
+
+[variablelist
+[[`template<class T> const nvp<T> make_nvp(const char* name, T& value)
+noexcept;`]
+[Returns `nvp<T>(name, value)`.]]]
+
+[endsect]
+
+[section Macros]
+
+[variablelist
+[[`#define BOOST_NVP(object) see below`]
+[Expands to `boost::make_nvp(BOOST_STRINGIZE(object), object)`.]]]
+
+[endsect]
+
+[endsect]
+
+[section History]
+
+Robert Ramey originally implemented NVP in the Serialization library. Glen
+Fernandes implemented this new (but compatible) version in the Core library.
+
+[endsect]
+
+[endsect]

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/pointer_traits.qbk

@@ -0,0 +1,172 @@
+[/
+Copyright 2017-2021 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+]
+
+[section:pointer_traits pointer_traits]
+
+[simplesect Authors]
+
+* Glen Fernandes
+
+[endsimplesect]
+
+[section Overview]
+
+The header <boost/core/pointer_traits.hpp> provides the class template
+`boost::pointer_traits` to facilitate use of pointer-like types. The C++11
+standard library introduced `std::pointer_traits` along with an allocator
+model which supported pointer-like types in addition to plain raw pointers.
+This implementation also supports C++98.
+
+It also provides the function template `boost::to_address` to obtain a raw
+pointer from an object of any pointer-like type.
+
+[endsect]
+
+[section Examples]
+
+The following example allocates storage and constructs an object in that
+storage using an allocator.
+
+```
+template<class Allocator>
+void function(Allocator& a)
+{
+    auto p = a.allocate(1);
+    std::allocator_traits<Allocator>::construct(a, boost::to_address(p));
+}
+```
+
+[endsect]
+
+[section Reference]
+
+```
+namespace boost {
+
+template<class T>
+struct pointer_traits {
+    typedef T pointer;
+    typedef ``['see below]`` element_type;
+    typedef ``['see below]`` difference_type;
+
+    template<class U>
+    struct rebind_to {
+        typedef ``['see below]`` type;
+    };
+
+    template<class U>
+    using rebind = typename rebind_to<U>::type;
+
+    static pointer pointer_to(element_type& v);
+};
+
+template<class T>
+struct pointer_traits<T*> {
+    typedef T* pointer;
+    typedef T element_type;
+    typedef std::ptrdiff_t difference_type;
+
+    template<class U>
+    struct rebind_to {
+        typedef U* type;
+    };
+
+    template<class U>
+    using rebind = typename rebind_to<U>::type;
+
+    static pointer pointer_to(``['see below]`` v) noexcept;
+};
+
+template<class T>
+constexpr T* to_address(T* v) noexcept;
+
+template<class T>
+auto to_address(const T& v) noexcept;
+
+} // boost
+```
+
+[section Overview]
+
+If the member type `element_type` is not defined, then all other members are
+also not defined (`pointer_traits` is SFINAE-friendly).
+
+[endsect]
+
+[section Member types]
+
+[variablelist
+[[`typedef` ['see below] `element_type;`]
+[`T::element_type` if such a type exists; otherwise `U` if `T` is a class
+  template instantiation of the form `Pointer<U, Args>`, where `Args` is zero
+  or more type arguments; otherwise the member is not defined.]]
+[[`typedef` ['see below] `difference_type;`]
+[`T::difference_type` if such a type exists; otherwise `std::ptrdiff_t`.]]
+[[`template<class U> struct rebind_to { typedef` ['see below] `type; };`]
+[`type` is `T::rebind<U>` if such a type exists; otherwise, `Pointer<V, Args>`
+  if `T` is a class template instantiation of the form `Pointer<T, Args>`,
+  where `Args` is zero or more type arguments; otherwise, the member is not
+  defined.]]]
+
+[endsect]
+
+[section Member functions]
+
+[variablelist
+[[`static pointer pointer_traits::pointer_to(element_type& v);`]
+[[variablelist
+[[Remark]
+[If `element_type` is a void type, or if `T::pointer_to(v)` is not well formed,
+  this member is not defined.]]
+[[Returns]
+[A pointer to `v` obtained by calling `T::pointer_to(v)`.]]]]]
+[[`static pointer pointer_traits<T*>::pointer_to(element_type& v) noexcept;`]
+[[variablelist
+[[Remark]
+[If `element_type` is a void type, this member is not defined.]]
+[[Returns][`addressof(v)`.]]]]]]
+
+[endsect]
+
+[section Optional members]
+
+[variablelist
+[[`static element_type* to_address(pointer v) noexcept;`]
+[[variablelist
+[[Returns]
+[A pointer of type `element_type*` that references the same location as the
+  argument `p`.]]
+[[Note]
+[This function should be the inverse of `pointer_to`. If defined, it
+  customizes the behavior of the non-member function `to_address`.]]]]]]
+
+[endsect]
+
+[section Free functions]
+
+[variablelist
+[[`template<class T> constexpr T* to_address(T* v) noexcept;`]
+[[variablelist
+[[Returns][`v`.]]]]]
+[[`template<class T> auto to_address(const T& v) noexcept;`]
+[[variablelist
+[[Returns][`pointer_traits<T>::to_address(v)` if that
+  expression is well-formed, otherwise `to_address(v.operator->())`.]]]]]]
+
+[endsect]
+
+[endsect]
+
+[section Acknowledgments]
+
+Glen Fernandes implemented `pointer_traits` and `to_address` with reviews and
+guidance from Peter Dimov.
+
+[endsect]
+
+[endsect]

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/quick_exit.qbk

@@ -0,0 +1,40 @@
+[/
+  Copyright 2018 Peter Dimov
+
+  Distributed under the Boost Software License, Version 1.0.
+
+  See accompanying file LICENSE_1_0.txt
+  or copy at http://boost.org/LICENSE_1_0.txt
+]
+
+[section:quick_exit quick_exit]
+
+[simplesect Authors]
+
+* Peter Dimov
+
+[endsimplesect]
+
+[section Header <boost/core/quick_exit.hpp>]
+
+The header `<boost/core/quick_exit.hpp>` defines the function
+`void boost::quick_exit(int code)`. It calls the standard C++11 function
+[@https://en.cppreference.com/w/cpp/utility/program/quick_exit
+ `std::quick_exit(code)`], if that is available, and otherwise exits the
+ process via [@https://en.cppreference.com/w/cpp/utility/program/_Exit
+ `std::_Exit(code)`] or equivalent.
+
+[section Synopsis]
+
+``
+namespace boost
+{
+    [[noreturn]] void quick_exit(int code) noexcept;
+}
+``
+
+[endsect]
+
+[endsect]
+
+[endsect]

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/ref.qbk

@@ -0,0 +1,82 @@
+[/
+ /  Copyright (c) 2001, 2002, 2006 Peter Dimov
+ /  Copyright (c) 2002 David Abrahams
+ /  Copyright (c) 2002 Aleksey Gurtovoy
+ /  Copyright (c) 2003, 2004 Douglas Gregor
+ /  Copyright (c) 2009 Ronald Garcia
+ /  Copyright (c) 2014 Glen Joseph Fernandes
+ /
+ / Distributed under the Boost Software License, Version 1.0. (See
+ / accompanying file LICENSE_1_0.txt or copy at
+ / http://www.boost.org/LICENSE_1_0.txt)
+ /]
+
+[section:ref ref]
+
+[simplesect Authors]
+
+* Jaakko J\u00E4rvi
+* Peter Dimov
+* Douglas Gregor
+* Dave Abrahams
+* Frank Mori Hess
+* Ronald Garcia
+
+[endsimplesect]
+
+[section Introduction]
+
+The Ref library is a small library that is useful for passing
+references to function templates (algorithms) that would
+usually take copies of their arguments. It defines the class
+template `boost::reference_wrapper<T>`, two functions
+`boost::ref` and `boost::cref` that return instances of
+`boost::reference_wrapper<T>`, a function `boost::unwrap_ref`
+that unwraps a `boost::reference_wrapper<T>` or returns a
+reference to any other type of object, and the two traits
+classes `boost::is_reference_wrapper<T>` and
+`boost::unwrap_reference<T>`.
+
+The purpose of `boost::reference_wrapper<T>` is to contain a
+reference to an object of type `T`. It is primarily used to
+"feed" references to function templates (algorithms) that take
+their parameter by value.
+
+To support this usage, `boost::reference_wrapper<T>` provides
+an implicit conversion to `T&`. This usually allows the
+function templates to work on references unmodified.
+
+`boost::reference_wrapper<T>` is both CopyConstructible and
+Assignable (ordinary references are not Assignable).
+
+The `expression boost::ref(x)` returns a
+`boost::reference_wrapper<X>(x)` where `X` is the type of `x`.
+Similarly, `boost::cref(x)` returns a
+`boost::reference_wrapper<X const>(x)`.
+
+The expression `boost::unwrap_ref(x)` returns a
+`boost::unwrap_reference<X>::type&` where `X` is the type of
+`x`.
+
+The expression `boost::is_reference_wrapper<T>::value` is
+`true` if `T` is a `reference_wrapper`, and `false` otherwise.
+
+The type-expression `boost::unwrap_reference<T>::type` is
+`T::type` if `T` is a `reference_wrapper`, `T` otherwise.
+
+[endsect]
+
+[xinclude ref_reference.xml]
+
+[section Acknowledgments]
+
+`ref` and `cref` were originally part of the Tuple library by
+Jaakko J\u00E4rvi. They were "promoted to `boost::` status" by
+Peter Dimov because they are generally useful. Douglas Gregor
+and Dave Abrahams contributed `is_reference_wrapper` and
+`unwrap_reference`. Frank Mori Hess and Ronald Garcia
+contributed `boost::unwrap_ref`.
+
+[endsect]
+
+[endsect]

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/scoped_enum.qbk

@@ -0,0 +1,191 @@
+[/
+ / Copyright (c) 2009 Beman Dawes
+ / Copyright (c) 2011-2012 Vicente J. Botet Escriba
+ / Copyright (c) 2012 Anthony Williams
+ / Copyright (c) 2014 Andrey Semashev
+ /
+ / Distributed under the Boost Software License, Version 1.0. (See accompanying
+ / file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ /]
+
+[section:scoped_enum scoped_enum]
+
+[simplesect Authors]
+
+* Beman Dawes
+* Vicente J. Botet Escriba
+* Anthony Williams
+
+[endsimplesect]
+
+[section Overview]
+
+The `boost/core/scoped_enum.hpp` header contains a number of macros that can be used to generate
+C++11 scoped enums (7.2 \[dcl.enum\]) if the feature is supported by the compiler, otherwise emulate
+it with C++03 constructs. The `BOOST_NO_CXX11_SCOPED_ENUMS` macro from Boost.Config is used to detect
+the feature support in the compiler.
+
+Some of the enumerations defined in the standard library are scoped enums.
+
+    enum class future_errc
+    {
+        broken_promise,
+        future_already_retrieved,
+        promise_already_satisfied,
+        no_state
+    };
+
+The user can portably declare such enumeration as follows:
+
+    BOOST_SCOPED_ENUM_DECLARE_BEGIN(future_errc)
+    {
+        broken_promise,
+        future_already_retrieved,
+        promise_already_satisfied,
+        no_state
+    }
+    BOOST_SCOPED_ENUM_DECLARE_END(future_errc)
+
+These macros allows to use `future_errc` in almost all the cases as an scoped enum.
+
+    future_errc ev = future_errc::no_state;
+
+It is possible to specify the underlying type of the enumeration:
+
+    BOOST_SCOPED_ENUM_UT_DECLARE_BEGIN(future_errc, unsigned int)
+    {
+        broken_promise,
+        future_already_retrieved,
+        promise_already_satisfied,
+        no_state
+    }
+    BOOST_SCOPED_ENUM_DECLARE_END(future_errc)
+
+The enumeration supports explicit conversion from the underlying type.
+
+The enumeration can be forward declared:
+
+    BOOST_SCOPED_ENUM_FORWARD_DECLARE(future_errc);
+
+There are however some limitations. The emulated scoped enum is not a C++ enum, so `is_enum< future_errc >` will be `false_type`.
+
+The emulated scoped enum can not be used in switch nor in template arguments. For these cases the user needs to use some helpers. Instead of
+
+    switch (ev)
+    {
+    case future_errc::broken_promise:
+        // ...
+
+use
+
+    switch (boost::native_value(ev))
+    {
+    case future_errc::broken_promise:
+        // ...
+
+and instead of
+
+    template <>
+    struct is_error_code_enum< future_errc > :
+        public true_type
+    {
+    };
+
+use
+
+    template <>
+    struct is_error_code_enum< BOOST_SCOPED_ENUM_NATIVE(future_errc) > :
+        public true_type
+    {
+    };
+
+Explicit conversion to the underlying type should be performed with `boost::underlying_cast` instead of `static_cast`:
+
+    unsigned int val = boost::underlying_cast< unsigned int >(ev);
+
+In C++03, scoped enums behave differently in case of calling an overloaded function when one overload takes a scoped enum as a parameter, and the other takes a parameter of an integral type. Consider the following code:
+
+    enum enum_regular { REGULAR_A, REGULAR_B };
+
+    BOOST_SCOPED_ENUM_DECLARE_BEGIN(enum_scoped)
+    {
+        a, b
+    }
+    BOOST_SCOPED_ENUM_DECLARE_END(enum_scoped)
+
+    void regular_or_int(enum_regular); // (1)
+    void regular_or_int(int);          // (2)
+    void scoped_or_int(enum_scoped);   // (3)
+    void scoped_or_int(int);           // (4)
+
+    regular_or_int(REGULAR_A);                  // calls (1) in C++03 and C++11
+    scoped_or_int(enum_scoped::a);              // calls (3) in C++11 but (4) in C++03!
+    scoped_or_int(enum_scoped(enum_scoped::a)); // calls (3) in C++03 and C++11
+
+Here is usage example:
+
+    BOOST_SCOPED_ENUM_UT_DECLARE_BEGIN(algae, char)
+    {
+        green,
+        red,
+        cyan
+    }
+    BOOST_SCOPED_ENUM_DECLARE_END(algae)
+    ...
+    algae sample( algae::red );
+    void foo( algae color );
+    ...
+    sample = algae::green;
+    foo( algae::cyan );
+
+[endsect]
+
+[section Deprecated syntax]
+
+In early versions of the header there were two ways to declare scoped enums, with different pros and cons to each.
+The other way used a different set of macros:
+
+    BOOST_SCOPED_ENUM_START(algae)
+    {
+        green,
+        red,
+        cyan
+    };
+    BOOST_SCOPED_ENUM_END
+    ...
+    BOOST_SCOPED_ENUM(algae) sample( algae::red );
+    void foo( BOOST_SCOPED_ENUM(algae) color );
+    ...
+    sample = algae::green;
+    foo( algae::cyan );
+
+Here `BOOST_SCOPED_ENUM_START` corresponds to `BOOST_SCOPED_ENUM_DECLARE_BEGIN`, `BOOST_SCOPED_ENUM_END` to `BOOST_SCOPED_ENUM_DECLARE_END`
+and `BOOST_SCOPED_ENUM` to `BOOST_SCOPED_ENUM_NATIVE`. Note also the semicolon before `BOOST_SCOPED_ENUM_END`.
+
+In the current version these macros produce equivalent result to the ones described above and are considered deprecated.
+
+[endsect]
+
+[section Acquiring the underlying type of the enum]
+
+The header `boost/core/underlying_type.hpp` defines the metafunction `boost::underlying_type` which can be used to
+obtain the underlying type of the scoped enum. This metafunction has support for emulated scoped enums declared with
+macros in `boost/core/scoped_enum.hpp`. When native scoped enums are supported by the compiler, this metafunction
+is equivalent to `std::underlying_type`.
+
+Unfortunately, there are configurations which implement scoped enums but not `std::underlying_type`. In this case
+`boost::underlying_type` has to be specialized by user. The macro `BOOST_NO_UNDERLYING_TYPE` is defined to indicate
+such cases.
+
+[endsect]
+
+[section Acknowledgments]
+
+This scoped enum emulation was developed by Beman Dawes, Vicente J. Botet Escriba and Anthony Williams.
+
+Helpful comments and suggestions were also made by Kjell Elster, Phil Endecott, Joel Falcou, Mathias Gaunard, Felipe Magno de Almeida,
+Matt Calabrese, Daniel James and Andrey Semashev.
+
+[endsect]
+
+[endsect]

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/span.qbk

@@ -0,0 +1,404 @@
+[/
+Copyright 2019 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+]
+
+[section:span span]
+
+[simplesect Authors]
+
+* Glen Fernandes
+
+[endsimplesect]
+
+[section Overview]
+
+This header <boost/core/span.hpp> provides class template `span`, which is a
+view over a sequence of objects. It implements the C++20 standard library
+`std::span` facility. This implementation supports C++11 and higher.
+
+In addition to referencing the sequence of objects, the span knows the count of
+objects. There are two kinds of spans:
+
+* Dynamic size (`span<T>` or `span<T, dynamic_extent>`)
+* Static size (`span<T, N>`)
+
+Dynamic size spans have a count that can be a value known at run time. Static
+size spans have a count that must be known at compile time.
+
+[endsect]
+
+[section Examples]
+
+The following snippet shows a function to compute a SHA1 hash whose parameters
+and return type use spans.
+
+```
+auto sha1(boost::span<const unsigned char> input,
+    boost::span<unsigned char, SHA_DIGEST_LENGTH> ouput)
+{
+    SHA_CTX context;
+    SHA1_Init(&context);
+    SHA1_Update(&context, input.data(), input.size());
+    SHA1_Final(output.data(), &context);
+    return output;
+}
+```
+
+[endsect]
+
+[section Reference]
+
+```
+namespace boost {
+
+constexpr std::size_t dynamic_extent = -1;
+
+template<class T, std::size_t E = dynamic_extent>
+class span {
+public:
+    typedef T element_type;
+    typedef std::remove_cv_t<T> value_type;
+    typedef std::size_t size_type;
+    typedef std::ptrdiff_t difference_type;
+    typedef T* pointer;
+    typedef const T* const_pointer;
+    typedef T& reference;
+    typedef const T& const_reference;
+    typedef T* iterator;
+    typedef const T* const_iterator;
+    typedef std::reverse_iterator<T*> reverse_iterator;
+    typedef std::reverse_iterator<const T*> const_reverse_iterator;
+
+    static constexpr std::size_t extent = E;
+
+    constexpr span() noexcept;
+
+    explicit(E != dynamic_extent)
+    template<class I>
+    constexpr span(I* f, size_type c);
+
+    explicit(E != dynamic_extent)
+    template<class I, class L>
+    constexpr span(I* f, L* l);
+
+    template<std::size_t N>
+    constexpr span(type_identity_t<T> (&a)[N]);
+
+    template<class U, std::size_t N>
+    constexpr span(std::array<U, N>& a) noexcept;
+
+    template<class U, std::size_t N>
+    constexpr span(const std::array<U, N>& a) noexcept;
+
+    explicit(E != dynamic_extent)
+    template<class R>
+    constexpr span(R&& r);
+
+    explicit(E != dynamic_extent && N == dynamic_extent)
+    template<class U, std::size_t N>
+    constexpr span(const span<U, N>& s) noexcept;
+
+    template<std::size_t C>
+    constexpr span<T, C> first() const;
+
+    template<std::size_t C>
+    constexpr span<T, C> last() const;
+
+    template<std::size_t O, std::size_t C = dynamic_extent>
+    constexpr span<T, see below> subspan() const;
+
+    constexpr span<T, dynamic_extent> first(size_type c) const;
+    constexpr span<T, dynamic_extent> last(size_type c) const;
+
+    constexpr span<T, dynamic_extent> subspan(size_type o,
+        size_type c = dynamic_extent) const;
+
+    constexpr size_type size() const noexcept;
+    constexpr size_type size_bytes() const noexcept;
+    constexpr bool empty() const noexcept;
+
+    constexpr reference operator[](size_type i) const;
+    constexpr reference front() const;
+    constexpr reference back() const;
+    constexpr pointer data() const noexcept;
+
+    constexpr iterator begin() const noexcept;
+    constexpr iterator end() const noexcept;
+    constexpr reverse_iterator rbegin() const noexcept;
+    constexpr reverse_iterator rend() const noexcept;
+    constexpr const_iterator cbegin() const noexcept;
+    constexpr const_iterator cend() const noexcept;
+    constexpr const_reverse_iterator crbegin() const noexcept;
+    constexpr const_reverse_iterator crend() const noexcept;
+
+    friend constexpr iterator begin(span s) noexcept {
+        return s.begin();
+    }
+
+    friend constexpr iterator end(span s) noexcept {
+        return s.end();
+    }
+};
+
+template<class I, class L>
+span(I*, L) -> span<I>;
+
+template<class T, std::size_t N>
+span(T(&)[N]) -> span<T, N>;
+
+template<class T, std::size_t N>
+span(std::array<T, N>&) -> span<T, N>;
+
+template<class T, std::size_t N>
+span(const std::array<T, N>&) -> span<const T, N>;
+
+template<class R>
+span(R&&) -> span<std::remove_pointer_t<decltype(std::declval<R&>().data())> >;
+
+template<class T, std::size_t E>
+span<const std::byte, E == dynamic_extent ? dynamic_extent : sizeof(T) * E>
+as_bytes(span<T, E> s) noexcept;
+
+template<class T, std::size_t E>
+span<std::byte, E == dynamic_extent ? dynamic_extent : sizeof(T) * E>
+as_writable_bytes(span<T, E> s) noexcept;
+
+} /* boost */
+```
+
+[section Constructors]
+
+[variablelist
+[[`constexpr span() noexcept;`]
+[[variablelist
+[[Constraints][`E == dynamic_extent || E == 0` is `true`.]]
+[[Postconditions][`size() == 0 && data() == nullptr`.]]]]]
+[[`explicit(E != dynamic_extent)
+template<class I>
+constexpr span(I* f, size_type c);`]
+[[variablelist
+[[Constraints]
+[`is_convertible_v<I(*)[], T(*)[]>` is `true`.]]
+[[Preconditions]
+[[itemized_list
+[`[f, f + c)` is a valid range.]
+[If `E` is not equal to `dynamic_extent`, then `c` is equal to `E`.]]]]
+[[Effects][Constructs a `span` with data `f` and size `c`.]]
+[[Throws][Nothing.]]]]]
+[[`explicit(E != dynamic_extent)
+template<class I, class L>
+constexpr span(I* f, L* l);`]
+[[variablelist
+[[Constraints]
+[`is_convertible_v<I(*)[], T(*)[]>` is `true`.]]
+[[Preconditions]
+[[itemized_list
+[If `E` is not equal to `dynamic_extent`, then `l - f` is equal to `E`.]
+[`[f, l)` is a valid range.]]]]
+[[Effects][Constructs a `span` with data `f` and size `l - f`.]]
+[[Throws][Nothing.]]]]]
+[[`template<std::size_t N>
+constexpr span(type_identity_t<T> (&a)[N]);`]
+[[variablelist
+[[Constraints][`E == dynamic_extent || E == N` is `true`.]]
+[[Effects][Constructs a `span` that is a view over the supplied array.]]
+[[Postconditions][`size() == N && data() == &a[0]` is `true`.]]]]]
+[[`template<class U, std::size_t N>
+constexpr span(std::array<U, N>& a) noexcept;`]
+[[variablelist
+[[Constraints]
+[[itemized_list
+[`E == dynamic_extent || E == N` is `true`, and]
+[`U(*)[]` is convertible to `T(*)[]`.]]]]
+[[Effects][Constructs a `span` that is a view over the supplied array.]]
+[[Postconditions][`size() == N && data() == a.data()` is `true`.]]]]]
+[[`template<class U, std::size_t N>
+constexpr span(const std::array<U, N>& a) noexcept;`]
+[[variablelist
+[[Constraints]
+[[itemized_list
+[`E == dynamic_extent || E == N` is `true`, and]
+[`U(*)[]` is convertible to `T(*)[]`.]]]]
+[[Effects][Constructs a `span` that is a view over the supplied array.]]
+[[Postconditions][`size() == N && data() == a.data()` is `true`.]]]]]
+[[`explicit(E != dynamic_extent)
+template<class R>
+constexpr span(R&& r);`]
+[[variablelist
+[[Constraints]
+[[itemized_list
+[`is_lvalue_reference_v<R> || is_const_v<T>` is `true`]
+[`remove_cvref_t<R>` is not a specialization of `span`,]
+[`remove_cvref_t<R>` is not a specialization of `array`,]
+[`is_array_v<remove_cvref_t<R>>` is `false`,]
+[`r.data()` is well-formed and
+`is_convertible_v<remove_pointer_t<decltype(declval<R&>().data())>(*)[],
+T(*)[]>` is `true`, and]
+[`r.size()` is well-formed and
+`is_convertible_v<decltype(declval<R&>().size()), size_t>` is `true`.]]]]
+[[Effects][Constructs a `span` with data `r.data()` and size `r.size()`.]]
+[[Throws][What and when r.data() and r.size() throw.]]]]]
+[[`explicit(E != dynamic_extent && N == dynamic_extent)
+template<class U, std::size_t N>
+constexpr span(const span<U, N>& s) noexcept;`]
+[[variablelist
+[[Constraints]
+[[itemized_list
+[`E == dynamic_extent || N == dynamic_extent || E == N` is `true`, and]
+[`is_convertible_v<U(*)[], T(*)[]>` is `true`.]]]]
+[[Preconditions]
+[If `E` is not equal to `dynamic_extent`, then `s.size()` is equal to `E`.]]
+[[Effects]
+[Constructs a `span` that is a view over the range
+`[s.data(), s.data() + s.size())`.]]
+[[Postconditions][`size() == s.size() && data() == s.data()`.]]]]]]
+
+[endsect]
+
+[section Subviews]
+
+[variablelist
+[[`template<std::size_t C> constexpr span<T, C> first() const;`]
+[[variablelist
+[[Mandates][`C <= E` is `true`.]]
+[[Preconditions][`C <= size()` is `true`.]]
+[[Effects]
+[Equivalent to `return R{data(), C};` where `R` is the return type.]]]]]
+[[`template<std::size_t C> constexpr span<T, C> last() const;`]
+[[variablelist
+[[Mandates][`C <= E` is `true`.]]
+[[Preconditions][`C <= size()` is `true`.]]
+[[Effects]
+[Equivalent to `return R{data() + (size() - C), C};` where `R` is the return
+type.]]]]]
+[[`template<std::size_t O, std::size_t C = dynamic_extent>
+constexpr span<T, see below> subspan() const;`]
+[[variablelist
+[[Mandates][`O <= E && (C == dynamic_extent || C <= E - O)` is `true`.]]
+[[Preconditions]
+[`O <= size() && (C == dynamic_extent || C <= size() - O)` is `true`.]]
+[[Effects]
+[Equivalent to
+`return span<T, see below>(data() + O,
+C != dynamic_extent ? C : size() - O);`.]]
+[[Remarks]
+[The second template argument of the returned span type is:
+`C != dynamic_extent ? C : (E != dynamic_extent ? E - O :
+dynamic_extent)`]]]]]
+[[`constexpr span<T, dynamic_extent> first(size_type c) const;`]
+[[variablelist
+[[Preconditions][`c <= size()` is `true`.]]
+[[Effects][Equivalent to: `return {data(), c};`]]]]]
+[[`constexpr span<T, dynamic_extent> last(size_type c) const;`]
+[[variablelist
+[[Preconditions][`c <= size()` is `true`.]]
+[[Effects][Equivalent to: `return {data() + (size() - c), c};`]]]]]
+[[`constexpr span<T, dynamic_extent> subspan(size_type o,
+size_type c = dynamic_extent) const;`]
+[[variablelist
+[[Preconditions]
+[`o <= size() && (c == dynamic_extent || o + c <= size())` is `true`.]]
+[[Effects]
+[Equivalent to:
+`return {data() + o, c == dynamic_extent ? size() - o : c};`]]]]]]
+
+[endsect]
+
+[section Observers]
+
+[variablelist
+[[`constexpr size_type size() const noexcept;`]
+[[variablelist
+[[Returns][The number of elements in the span.]]]]]
+[[`constexpr size_type size_bytes() const noexcept;`]
+[[variablelist
+[[Effects][Equivalent to: `return size() * sizeof(T);`]]]]]
+[[`constexpr bool empty() const noexcept;`]
+[[variablelist
+[[Effects][Equivalent to: `return size() == 0;`]]]]]]
+
+[endsect]
+
+[section Element access]
+
+[variablelist
+[[`constexpr reference operator[](size_type i) const;`]
+[[variablelist
+[[Preconditions][`i < size()` is `true`.]]
+[[Effects][Equivalent to: `return *(data() + i);`]]]]]
+[[`constexpr reference front() const;`]
+[[variablelist
+[[Preconditions][`empty()` is `false`.]]
+[[Effects][Equivalent to: `return *data();`]]]]]
+[[`constexpr reference back() const;`]
+[[variablelist
+[[Preconditions][`empty()` is `false`.]]
+[[Effects][Equivalent to: `return *(data() + (size() - 1);`]]]]]
+[[`constexpr pointer data() const noexcept;`]
+[[variablelist
+[[Returns][A pointer to the first element in the span.]]]]]]
+
+[endsect]
+
+[section Iterator support]
+
+[variablelist
+[[`constexpr iterator begin() const noexcept;`]
+[[variablelist
+[[Returns][A constant iterator referring to the first element in the span. If `empty()`,
+then it returns the same value as `cend()`.]]]]]
+[[`constexpr iterator end() const noexcept;`]
+[[variablelist
+[[Returns][A constant iterator which is the past-the-end value.]]]]]
+[[`constexpr reverse_iterator rbegin() const noexcept;`]
+[[variablelist
+[[Effects][Equivalent to: `return reverse_iterator(end());`]]]]]
+[[`constexpr reverse_iterator rend() const noexcept;`]
+[[variablelist
+[[Effects][Equivalent to: `return reverse_iterator(begin());`]]]]]
+[[`constexpr const_iterator cbegin() const noexcept;`]
+[[variablelist
+[[Returns]
+[A constant iterator referring to the first element in the span. If `empty()`,
+then it returns the same value as `cend()`.]]]]]
+[[`constexpr const_iterator cend() const noexcept;`]
+[[variablelist
+[[Returns][A constant iterator which is the past-the-end value.]]]]]
+[[`constexpr const_reverse_iterator crbegin() const noexcept;`]
+[[variablelist
+[[Effects][Equivalent to: `return const_reverse_iterator(cend());`]]]]]
+[[`constexpr const_reverse_iterator crend() const noexcept;`]
+[[variablelist
+[[Effects]
+[Equivalent to: `return const_reverse_iterator(cbegin());`]]]]]]
+
+[endsect]
+
+[section Views of object representation]
+
+[variablelist
+[[`template<class T, std::size_t E>
+span<const std::byte, E == dynamic_extent ? dynamic_extent : sizeof(T) * E>
+as_bytes(span<T, E> s) noexcept;`]
+[[variablelist
+[[Effects]
+[Equivalent to:
+`return {reinterpret_cast<const byte*>(s.data()), s.size_bytes()};`.]]]]]
+[[`template<class T, std::size_t E>
+span<std::byte, E == dynamic_extent ? dynamic_extent : sizeof(T) * E>
+as_writable_bytes(span<T, E> s) noexcept;`]
+[[variablelist
+[[Constraints][`is_const_v<T>` is `false`.]]
+[[Effects]
+[Equivalent to: `return R{reinterpret_cast<byte*>(s.data()), s.size_bytes()};`
+where `R` is the return type.]]]]]]
+
+[endsect]
+
+[endsect]
+
+[endsect]

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/string_view.qbk

@@ -0,0 +1,768 @@
+[/
+  Copyright 2021 Peter Dimov
+  Distributed under the Boost Software License, Version 1.0.
+  https://boost.org/LICENSE_1_0.txt
+]
+
+[section:string_view string_view]
+
+[simplesect Authors]
+
+* Peter Dimov
+
+[endsimplesect]
+
+[section Header <boost/core/string_view.hpp>]
+
+The header `<boost/core/string_view.hpp>` defines `boost::core::string_view`,
+a portable and interoperable implementation of `std::string_view`.
+
+Unlike `boost::string_view`, `boost::core::string_view` has implicit
+conversions from and to `std::string_view`, which allows Boost libraries that
+support C++11/C++14 to use it in interfaces without forcing users to forgo the
+use of `std::string_view` in their code.
+
+[section Synopsis]
+
+``
+namespace boost
+{
+namespace core
+{
+
+template<class Ch> class basic_string_view
+{
+public:
+
+    // types
+
+    typedef std::char_traits<Ch> traits_type;
+    typedef Ch value_type;
+    typedef Ch* pointer;
+    typedef Ch const* const_pointer;
+    typedef Ch& reference;
+    typedef Ch const& const_reference;
+    typedef Ch const* const_iterator;
+    typedef const_iterator iterator;
+    typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
+    typedef const_reverse_iterator reverse_iterator;
+    typedef std::size_t size_type;
+    typedef std::ptrdiff_t difference_type;
+
+    // npos
+
+    static constexpr size_type npos = static_cast<size_type>( -1 );
+
+public:
+
+    // construction and assignment
+
+    constexpr basic_string_view() noexcept;
+    constexpr basic_string_view( basic_string_view const& ) noexcept = default;
+    constexpr basic_string_view& operator=( basic_string_view const& ) noexcept & = default;
+    constexpr basic_string_view( Ch const* str ) noexcept;
+    constexpr basic_string_view( Ch const* str, size_type len ) noexcept;
+    constexpr basic_string_view( Ch const* begin, Ch const* end ) noexcept;
+    template<class A> basic_string_view( std::basic_string<Ch, std::char_traits<Ch>, A> const& str ) noexcept;
+    basic_string_view( std::basic_string_view<Ch, std::char_traits<Ch>> const& str ) noexcept;
+
+    // conversions
+
+    template<class A> operator std::basic_string<Ch, std::char_traits<Ch>, A>() const;
+    template<class Ch2> operator std::basic_string_view<Ch2>() const noexcept;
+
+    // iterator support
+
+    constexpr const_iterator begin() const noexcept;
+    constexpr const_iterator end() const noexcept;
+    constexpr const_iterator cbegin() const noexcept;
+    constexpr const_iterator cend() const noexcept;
+    constexpr const_reverse_iterator rbegin() const noexcept;
+    constexpr const_reverse_iterator rend() const noexcept;
+    constexpr const_reverse_iterator crbegin() const noexcept;
+    constexpr const_reverse_iterator crend() const noexcept;
+
+    // capacity
+
+    constexpr size_type size() const noexcept;
+    constexpr size_type length() const noexcept;
+    constexpr size_type max_size() const noexcept;
+    constexpr bool empty() const noexcept;
+
+    // element access
+
+    constexpr const_reference operator[]( size_type pos ) const noexcept;
+    constexpr const_reference at( size_type pos ) const;
+    constexpr const_reference front() const noexcept;
+    constexpr const_reference back() const noexcept;
+    constexpr const_pointer data() const noexcept;
+
+    // modifiers
+
+    constexpr void remove_prefix( size_type n ) noexcept;
+    constexpr void remove_suffix( size_type n ) noexcept;
+    constexpr void swap( basic_string_view& s ) noexcept;
+
+    // string operations
+
+    constexpr size_type copy( Ch* s, size_type n, size_type pos = 0 ) const;
+    constexpr basic_string_view substr( size_type pos = 0, size_type n = npos ) const;
+
+    // compare
+
+    constexpr int compare( basic_string_view str ) const noexcept;
+    constexpr int compare( size_type pos1, size_type n1, basic_string_view str ) const;
+    constexpr int compare( size_type pos1, size_type n1, basic_string_view str, size_type pos2, size_type n2 ) const;
+    constexpr int compare( Ch const* s ) const;
+    constexpr int compare( size_type pos1, size_type n1, Ch const* s ) const;
+    constexpr int compare( size_type pos1, size_type n1, Ch const* s, size_type n2 ) const;
+
+    // starts_with
+
+    constexpr bool starts_with( basic_string_view x ) const noexcept;
+    constexpr bool starts_with( Ch x ) const noexcept;
+    constexpr bool starts_with( Ch const* x ) const noexcept;
+
+    // ends_with
+
+    constexpr bool ends_with( basic_string_view x ) const noexcept;
+    constexpr bool ends_with( Ch x ) const noexcept;
+    constexpr bool ends_with( Ch const* x ) const noexcept;
+
+    // find
+
+    constexpr size_type find( basic_string_view str, size_type pos = 0 ) const noexcept;
+    constexpr size_type find( Ch c, size_type pos = 0 ) const noexcept;
+    constexpr size_type find( Ch const* s, size_type pos, size_type n ) const noexcept;
+    constexpr size_type find( Ch const* s, size_type pos = 0 ) const noexcept;
+
+    // rfind
+
+    constexpr size_type rfind( basic_string_view str, size_type pos = npos ) const noexcept;
+    constexpr size_type rfind( Ch c, size_type pos = npos ) const noexcept;
+    constexpr size_type rfind( Ch const* s, size_type pos, size_type n ) const noexcept;
+    constexpr size_type rfind( Ch const* s, size_type pos = npos ) const noexcept;
+
+    // find_first_of
+
+    constexpr size_type find_first_of( basic_string_view str, size_type pos = 0 ) const noexcept;
+    constexpr size_type find_first_of( Ch c, size_type pos = 0 ) const noexcept;
+    constexpr size_type find_first_of( Ch const* s, size_type pos, size_type n ) const noexcept;
+    constexpr size_type find_first_of( Ch const* s, size_type pos = 0 ) const noexcept;
+
+    // find_last_of
+
+    constexpr size_type find_last_of( basic_string_view str, size_type pos = npos ) const noexcept;
+    constexpr size_type find_last_of( Ch c, size_type pos = npos ) const noexcept;
+    constexpr size_type find_last_of( Ch const* s, size_type pos, size_type n ) const noexcept;
+    constexpr size_type find_last_of( Ch const* s, size_type pos = npos ) const noexcept;
+
+    // find_first_not_of
+
+    constexpr size_type find_first_not_of( basic_string_view str, size_type pos = 0 ) const noexcept;
+    constexpr size_type find_first_not_of( Ch c, size_type pos = 0 ) const noexcept;
+    constexpr size_type find_first_not_of( Ch const* s, size_type pos, size_type n ) const noexcept;
+    constexpr size_type find_first_not_of( Ch const* s, size_type pos = 0 ) const noexcept;
+
+    // find_last_not_of
+
+    constexpr size_type find_last_not_of( basic_string_view str, size_type pos = npos ) const noexcept;
+    constexpr size_type find_last_not_of( Ch c, size_type pos = npos ) const noexcept;
+    constexpr size_type find_last_not_of( Ch const* s, size_type pos, size_type n ) const noexcept;
+    constexpr size_type find_last_not_of( Ch const* s, size_type pos = npos ) const noexcept;
+
+    // contains
+
+    constexpr bool contains( basic_string_view sv ) const noexcept;
+    constexpr bool contains( Ch c ) const noexcept;
+    constexpr bool contains( Ch const* s ) const noexcept;
+
+    // relational operators
+
+    constexpr friend bool operator==( basic_string_view sv1, basic_string_view sv2 ) noexcept;
+    constexpr friend bool operator!=( basic_string_view sv1, basic_string_view sv2 ) noexcept;
+    constexpr friend bool operator<( basic_string_view sv1, basic_string_view sv2 ) noexcept;
+    constexpr friend bool operator<=( basic_string_view sv1, basic_string_view sv2 ) noexcept;
+    constexpr friend bool operator>( basic_string_view sv1, basic_string_view sv2 ) noexcept;
+    constexpr friend bool operator>=( basic_string_view sv1, basic_string_view sv2 ) noexcept;
+};
+
+// stream inserter
+
+template<class Ch> std::basic_ostream<Ch>& operator<<( std::basic_ostream<Ch>& os, basic_string_view<Ch> str );
+
+// typedef names
+
+typedef basic_string_view<char> string_view;
+typedef basic_string_view<wchar_t> wstring_view;
+typedef basic_string_view<char16_t> u16string_view;
+typedef basic_string_view<char32_t> u32string_view;
+typedef basic_string_view<char8_t> u8string_view;
+
+} // namespace core
+} // namespace boost
+``
+
+[endsect]
+
+[section Construction]
+
+[section `constexpr basic_string_view() noexcept;`]
+
+* *Ensures:* `data() == 0`; `size() == 0`.
+
+[endsect]
+
+[section `constexpr basic_string_view( Ch const* str ) noexcept;`]
+
+* *Ensures:* `data() == str`; `size() == traits_type::length( str )`.
+
+[endsect]
+
+[section `constexpr basic_string_view( Ch const* str, size_type len ) noexcept;`]
+
+* *Ensures:* `data() == str`; `size() == len`.
+
+[endsect]
+
+[section `constexpr basic_string_view( Ch const* begin, Ch const* end ) noexcept;`]
+
+* *Requires:* `end >= begin`.
+* *Ensures:* `data() == begin`; `size() == end - begin`.
+
+[endsect]
+
+[section `template<class A> basic_string_view( std::basic_string<Ch, std::char_traits<Ch>, A> const& str ) noexcept;`]
+
+* *Ensures:* `data() == str.data()`; `size() == str.size()`.
+
+[endsect]
+
+[section `basic_string_view( std::basic_string_view<Ch, std::char_traits<Ch>> const& str ) noexcept;`]
+
+* *Ensures:* `data() == str.data()`; `size() == str.size()`.
+
+[endsect]
+
+[endsect]
+
+[section Conversions]
+
+[section `template<class A> operator std::basic_string<Ch, std::char_traits<Ch>, A>() const;`]
+
+* *Returns:* `std::basic_string<Ch, std::char_traits<Ch>, A>( data(), size() )`.
+
+[endsect]
+
+[section `template<class Ch2> operator std::basic_string_view<Ch2>() const noexcept;`]
+
+* *Constraints:* `Ch2` is the same type as `Ch`.
+* *Returns:* `std::basic_string_view<Ch2>( data(), size() )`.
+
+[endsect]
+
+[endsect]
+
+[section Iterator Support]
+
+[section `constexpr const_iterator begin() const noexcept;`]
+
+* *Returns:* `data()`.
+
+[endsect]
+
+[section `constexpr const_iterator end() const noexcept;`]
+
+* *Returns:* `data() + size()`.
+
+[endsect]
+
+[section `constexpr const_iterator cbegin() const noexcept;`]
+
+* *Returns:* `begin()`.
+
+[endsect]
+
+[section `constexpr const_iterator cend() const noexcept;`]
+
+* *Returns:* `end()`.
+
+[endsect]
+
+[section `constexpr const_reverse_iterator rbegin() const noexcept;`]
+
+* *Returns:* `const_reverse_iterator( end() )`.
+
+[endsect]
+
+[section `constexpr const_reverse_iterator rend() const noexcept;`]
+
+* *Returns:* `const_reverse_iterator( begin() )`.
+
+[endsect]
+
+[section `constexpr const_reverse_iterator crbegin() const noexcept;`]
+
+* *Returns:* `rbegin()`.
+
+[endsect]
+
+[section `constexpr const_reverse_iterator crend() const noexcept;`]
+
+* *Returns:* `rend()`.
+
+[endsect]
+
+[endsect]
+
+[section Capacity]
+
+[section `constexpr size_type size() const noexcept;`]
+
+* *Returns:* the length of the referenced character sequence.
+
+[endsect]
+
+[section `constexpr size_type length() const noexcept;`]
+
+* *Returns:* `size()`.
+
+[endsect]
+
+[section `constexpr size_type max_size() const noexcept;`]
+
+* *Returns:* `std::numeric_limits<size_type>::max() / sizeof(Ch)`.
+
+[endsect]
+
+[section `constexpr bool empty() const noexcept;`]
+
+* *Returns:* `size() == 0`.
+
+[endsect]
+
+[endsect]
+
+[section Element Access]
+
+[section `constexpr const_reference operator[]( size_type pos ) const noexcept;`]
+
+* *Requires:* `pos < size()`.
+* *Returns:* `data()[ pos ]`.
+
+[endsect]
+
+[section `constexpr const_reference at( size_type pos ) const;`]
+
+* *Returns:* `data()[ pos ]`.
+* *Throws:* `std::out_of_range` when `pos >= size()`.
+
+[endsect]
+
+[section `constexpr const_reference front() const noexcept;`]
+
+* *Requires:* `!empty()`.
+* *Returns:* `data()[ 0 ]`.
+
+[endsect]
+
+[section `constexpr const_reference back() const noexcept;`]
+
+* *Requires:* `!empty()`.
+* *Returns:* `data()[ size() - 1 ]`.
+
+[endsect]
+
+[section `constexpr const_pointer data() const noexcept;`]
+
+* *Returns:* a pointer to the beginning of the referenced character sequence.
+
+[endsect]
+
+[endsect]
+
+[section Modifiers]
+
+[section `constexpr void remove_prefix( size_type n ) noexcept;`]
+
+* *Requires:* `n <= size()`.
+* *Effects:* advances `data()` by `n` and decreases `size()` by `n`.
+
+[endsect]
+
+[section `constexpr void remove_suffix( size_type n ) noexcept;`]
+
+* *Requires:* `n <= size()`.
+* *Effects:* decreases `size()` by `n`.
+
+[endsect]
+
+[section `constexpr void swap( basic_string_view& s ) noexcept;`]
+
+* *Effects:* exchanges the contents of `*this` and `s`.
+
+[endsect]
+
+[endsect]
+
+[section String Operations]
+
+[section copy]
+
+[section `constexpr size_type copy( Ch* s, size_type n, size_type pos = 0 ) const;`]
+
+* *Effects:* copies to `s` the contents of `substr( pos, n )`.
+* *Throws:* `std::out_of_range` when `pos >= size()`.
+
+[endsect]
+
+[endsect]
+
+[section substr]
+
+[section `constexpr basic_string_view substr( size_type pos = 0, size_type n = npos ) const;`]
+
+* *Returns:* `basic_string_view( data() + pos, std::min( size() - pos, n ) )`.
+* *Throws:* `std::out_of_range` when `pos >= size()`.
+
+[endsect]
+
+[endsect]
+
+[section compare]
+
+[section `constexpr int compare( basic_string_view str ) const noexcept;`]
+
+* *Returns:*
+  * if `traits_type::compare( data(), str.data(), std::min( size(), str.size() ) )` is not zero, returns it. Otherwise,
+  * if `size() < str.size()`, returns a negative number. Otherwise,
+  * if `size() > str.size()`, returns a positive number. Otherwise,
+  * returns 0.
+
+[endsect]
+
+[section `constexpr int compare( size_type pos1, size_type n1, basic_string_view str ) const;`]
+
+* *Returns:* `substr( pos1, n1 ).compare( str )`.
+
+[endsect]
+
+[section `constexpr int compare( size_type pos1, size_type n1, basic_string_view str, size_type pos2, size_type n2 ) const;`]
+
+* *Returns:* `substr( pos1, n1 ).compare( str.substr( pos2, n2 ) )`.
+
+[endsect]
+
+[section `constexpr int compare( Ch const* s ) const noexcept;`]
+
+* *Returns:* `compare( basic_string_view( s ) )`.
+
+[endsect]
+
+[section `constexpr int compare( size_type pos1, size_type n1, Ch const* s ) const;`]
+
+* *Returns:* `substr( pos1, n1 ).compare( basic_string_view( s ) )`.
+
+[endsect]
+
+[section `constexpr int compare( size_type pos1, size_type n1, Ch const* s, size_type n2 ) const;`]
+
+* *Returns:* `substr( pos1, n1 ).compare( basic_string_view( s, n2 ) )`.
+
+[endsect]
+
+[endsect]
+
+[section starts_with]
+
+[section `constexpr bool starts_with( basic_string_view x ) const noexcept;`]
+
+* *Returns:* `substr( 0, x.size() ) == x`.
+
+[endsect]
+
+[section `constexpr bool starts_with( Ch x ) const noexcept;`]
+
+* *Returns:* `starts_with( basic_string_view( &x, 1 ) )`.
+
+[endsect]
+
+[section `constexpr bool starts_with( Ch const* x ) const noexcept;`]
+
+* *Returns:* `starts_with( basic_string_view( x ) )`.
+
+[endsect]
+
+[endsect]
+
+[section ends_with]
+
+[section `constexpr bool ends_with( basic_string_view x ) const noexcept;`]
+
+* *Returns:* `size() >= x.size() && substr( size() - x.size(), x.size() ) == x`.
+
+[endsect]
+
+[section `constexpr bool ends_with( Ch x ) const noexcept;`]
+
+* *Returns:* `ends_with( basic_string_view( &x, 1 ) )`.
+
+[endsect]
+
+[section `constexpr bool ends_with( Ch const* x ) const noexcept;`]
+
+* *Returns:* `ends_with( basic_string_view( x ) )`.
+
+[endsect]
+
+[endsect]
+
+[endsect]
+
+[section Searching]
+
+[section find]
+
+[section `constexpr size_type find( basic_string_view str, size_type pos = 0 ) const noexcept;`]
+
+* *Returns:* The lowest position `i` such that `i >= pos` and `substr( i, str.size() ) == str`, or `npos` if such a position doesn't exist.
+
+[endsect]
+
+[section `constexpr size_type find( Ch c, size_type pos = 0 ) const noexcept;`]
+
+* *Returns:* `find( basic_string_view( &c, 1 ), pos )`.
+
+[endsect]
+
+[section `constexpr size_type find( Ch const* s, size_type pos, size_type n ) const noexcept;`]
+
+* *Returns:* `find( basic_string_view( s, n ), pos )`.
+
+[endsect]
+
+[section `constexpr size_type find( Ch const* s, size_type pos = 0 ) const noexcept;`]
+
+* *Returns:* `find( basic_string_view( s ), pos )`.
+
+[endsect]
+
+[endsect]
+
+[section rfind]
+
+[section `constexpr size_type rfind( basic_string_view str, size_type pos = npos ) const noexcept;`]
+
+* *Returns:* The highest position `i` such that `i <= pos` and `substr( i, str.size() ) == str`, or `npos` if such a position doesn't exist.
+
+[endsect]
+
+[section `constexpr size_type rfind( Ch c, size_type pos = npos ) const noexcept;`]
+
+* *Returns:* `rfind( basic_string_view( &c, 1 ), pos )`.
+
+[endsect]
+
+[section `constexpr size_type rfind( Ch const* s, size_type pos, size_type n ) const noexcept;`]
+
+* *Returns:* `rfind( basic_string_view( s, n ), pos )`.
+
+[endsect]
+
+[section `constexpr size_type rfind( Ch const* s, size_type pos = npos ) const noexcept;`]
+
+* *Returns:* `rfind( basic_string_view( s ), pos )`.
+
+[endsect]
+
+[endsect]
+
+[section find_first_of]
+
+[section `constexpr size_type find_first_of( basic_string_view str, size_type pos = 0 ) const noexcept;`]
+
+* *Returns:* The lowest position `i` such that `i >= pos` and the character at position `i` is equal to one of the characters in `str`, or `npos` if such a position doesn't exist.
+
+[endsect]
+
+[section `constexpr size_type find_first_of( Ch c, size_type pos = 0 ) const noexcept;`]
+
+* *Returns:* `find_first_of( basic_string_view( &c, 1 ), pos )`.
+
+[endsect]
+
+[section `constexpr size_type find_first_of( Ch const* s, size_type pos, size_type n ) const noexcept;`]
+
+* *Returns:* `find_first_of( basic_string_view( s, n ), pos )`.
+
+[endsect]
+
+[section `constexpr size_type find_first_of( Ch const* s, size_type pos = 0 ) const noexcept;`]
+
+* *Returns:* `find_first_of( basic_string_view( s ), pos )`.
+
+[endsect]
+
+[endsect]
+
+[section find_last_of]
+
+[section `constexpr size_type find_last_of( basic_string_view str, size_type pos = npos ) const noexcept;`]
+
+* *Returns:* The highest position `i` such that `i <= pos` and the character at position `i` is equal to one of the characters in `str`, or `npos` if such a position doesn't exist.
+
+[endsect]
+
+[section `constexpr size_type find_last_of( Ch c, size_type pos = npos ) const noexcept;`]
+
+* *Returns:* `find_last_of( basic_string_view( &c, 1 ), pos )`.
+
+[endsect]
+
+[section `constexpr size_type find_last_of( Ch const* s, size_type pos, size_type n ) const noexcept;`]
+
+* *Returns:* `find_last_of( basic_string_view( s, n ), pos )`.
+
+[endsect]
+
+[section `constexpr size_type find_last_of( Ch const* s, size_type pos = npos ) const noexcept;`]
+
+* *Returns:* `find_last_of( basic_string_view( s ), pos )`.
+
+[endsect]
+
+[endsect]
+
+[section find_first_not_of]
+
+[section `constexpr size_type find_first_not_of( basic_string_view str, size_type pos = 0 ) const noexcept;`]
+
+* *Returns:* The lowest position `i` such that `i >= pos` and the character at position `i` is not equal to one of the characters in `str`, or `npos` if such a position doesn't exist.
+
+[endsect]
+
+[section `constexpr size_type find_first_not_of( Ch c, size_type pos = 0 ) const noexcept;`]
+
+* *Returns:* `find_first_not_of( basic_string_view( &c, 1 ), pos )`.
+
+[endsect]
+
+[section `constexpr size_type find_first_not_of( Ch const* s, size_type pos, size_type n ) const noexcept;`]
+
+* *Returns:* `find_first_not_of( basic_string_view( s, n ), pos )`.
+
+[endsect]
+
+[section `constexpr size_type find_first_not_of( Ch const* s, size_type pos = 0 ) const noexcept;`]
+
+* *Returns:* `find_first_not_of( basic_string_view( s ), pos )`.
+
+[endsect]
+
+[endsect]
+
+[section find_last_not_of]
+
+[section `constexpr size_type find_last_not_of( basic_string_view str, size_type pos = npos ) const noexcept;`]
+
+* *Returns:* The highest position `i` such that `i <= pos` and the character at position `i` is not equal to one of the characters in `str`, or `npos` if such a position doesn't exist.
+
+[endsect]
+
+[section `constexpr size_type find_last_not_of( Ch c, size_type pos = npos ) const noexcept;`]
+
+* *Returns:* `find_last_not_of( basic_string_view( &c, 1 ), pos )`.
+
+[endsect]
+
+[section `constexpr size_type find_last_not_of( Ch const* s, size_type pos, size_type n ) const noexcept;`]
+
+* *Returns:* `find_last_not_of( basic_string_view( s, n ), pos )`.
+
+[endsect]
+
+[section `constexpr size_type find_last_not_of( Ch const* s, size_type pos = npos ) const noexcept;`]
+
+* *Returns:* `find_last_not_of( basic_string_view( s ), pos )`.
+
+[endsect]
+
+[endsect]
+
+[section contains]
+
+[section `constexpr bool contains( basic_string_view sv ) const noexcept;`]
+
+* *Returns:* `find( sv ) != npos`.
+
+[endsect]
+
+[section `constexpr bool contains( Ch c ) const noexcept;`]
+
+* *Returns:* `find( c ) != npos`.
+
+[endsect]
+
+[section `constexpr bool contains( Ch const* s ) const noexcept;`]
+
+* *Returns:* `find( s ) != npos`.
+
+[endsect]
+
+[endsect]
+
+[endsect]
+
+[section Relational Operators]
+
+[section `constexpr friend bool operator==( basic_string_view sv1, basic_string_view sv2 ) noexcept;`]
+
+* *Returns:* `sv1.compare( sv2 ) == 0`.
+
+[endsect]
+
+[section `constexpr friend bool operator!=( basic_string_view sv1, basic_string_view sv2 ) noexcept;`]
+
+* *Returns:* `sv1.compare( sv2 ) != 0`.
+
+[endsect]
+
+[section `constexpr friend bool operator<( basic_string_view sv1, basic_string_view sv2 ) noexcept;`]
+
+* *Returns:* `sv1.compare( sv2 ) < 0`.
+
+[endsect]
+
+[section `constexpr friend bool operator<=( basic_string_view sv1, basic_string_view sv2 ) noexcept;`]
+
+* *Returns:* `sv1.compare( sv2 ) <= 0`.
+
+[endsect]
+
+[section `constexpr friend bool operator>( basic_string_view sv1, basic_string_view sv2 ) noexcept;`]
+
+* *Returns:* `sv1.compare( sv2 ) > 0`.
+
+[endsect]
+
+[section `constexpr friend bool operator>=( basic_string_view sv1, basic_string_view sv2 ) noexcept;`]
+
+* *Returns:* `sv1.compare( sv2 ) >= 0`.
+
+[endsect]
+
+[endsect]
+
+[section Stream Inserter]
+
+[section `template<class Ch> std::basic_ostream<Ch>& operator<<( std::basic_ostream<Ch>& os, basic_string_view<Ch> str );`]
+
+* *Effects:* equivalent to `os << x`, where `x` is a pointer to a null-terminated character sequence with the same contents as `str`.
+
+[endsect]
+
+[endsect]
+
+[endsect]
+
+[endsect]

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/swap.qbk

@@ -0,0 +1,121 @@
+[/
+ / Copyright (c) 2008 Joseph Gauterin
+ / Copyright (c) 2008, 2009 Niels Dekker
+ / Copyright (c) 2014 Glen Fernandes
+ /
+ / Distributed under the Boost Software License, Version 1.0. (See
+ / accompanying file LICENSE_1_0.txt or copy at
+ / http://www.boost.org/LICENSE_1_0.txt)
+ / For more information, see http://www.boost.org
+ /]
+
+[section:swap swap]
+
+[simplesect Authors]
+
+* Niels Dekker
+* Joseph Gauterin
+* Steven Watanabe
+* Eric Niebler
+
+[endsimplesect]
+
+[section Header <boost/core/swap.hpp>]
+
+`template<class T> void swap(T& left, T& right);`
+
+[endsect]
+
+[section Introduction]
+
+The template function `boost::swap` allows the values of two
+variables to be swapped, using argument dependent lookup to
+select a specialized swap function if available. If no
+specialized swap function is available, `std::swap` is used.
+
+[endsect]
+
+[section Rationale]
+
+The generic `std::swap` function requires that the elements
+to be swapped are assignable and copy constructible. It is
+usually implemented using one copy construction and two
+assignments - this is often both unnecessarily restrictive and
+unnecessarily slow. In addition, where the generic swap
+implementation provides only the basic guarantee, specialized
+swap functions are often able to provide the no-throw exception
+guarantee (and it is considered best practice to do so where
+possible [footnote Scott Meyers, Effective C++ Third Edition,
+Item 25: "Consider support for a non-throwing swap"].
+
+The alternative to using argument dependent lookup in this
+situation is to provide a template specialization of
+`std::swap` for every type that requires a specialized swap.
+Although this is legal C++, no Boost libraries use this method,
+whereas many Boost libraries provide specialized swap functions
+in their own namespaces.
+
+`boost::swap` also supports swapping built-in arrays. Note that
+`std::swap` originally did not do so, but a request to add an
+overload of `std::swap` for built-in arrays has been accepted
+by the C++ Standards Committee[footnote
+  [@http://open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#809 
+  LWG Defect Report 809: std::swap should be overloaded for array
+  types]].
+
+[endsect]
+    
+[section Exception Safety]
+
+`boost::swap` provides the same exception guarantee as the
+underlying swap function used, with one exception; for an array
+of type `T[n]`, where `n > 1` and the underlying swap function
+for `T` provides the strong exception guarantee, `boost::swap`
+provides only the basic exception guarantee.
+
+[endsect]
+
+[section Requirements]
+
+Either:
+
+* T must be assignable
+* T must be copy constructible
+
+Or:
+
+* A function with the signature `swap(T&,T&)` is available via
+  argument dependent lookup
+
+Or:
+
+* A template specialization of `std::swap` exists for T
+
+Or:
+
+* T is a built-in array of swappable elements
+
+[endsect]
+    
+[section Portability]
+
+Several older compilers do not support argument dependent
+lookup. On these compilers `boost::swap` will call
+`std::swap`, ignoring any specialized swap functions that
+could be found as a result of argument dependent lookup.
+
+[endsect]    
+
+[section Credits]
+
+* *Niels Dekker* - for implementing and documenting support for 
+  built-in arrays
+* *Joseph Gauterin* - for the initial idea, implementation,
+  tests, and documentation
+* *Steven Watanabe* - for the idea to make `boost::swap` less
+  specialized than `std::swap`, thereby allowing the function
+  to have the name 'swap' without introducing ambiguity
+
+[endsect]
+
+[endsect]

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/type_name.qbk

@@ -0,0 +1,77 @@
+[/
+  Copyright 2021 Peter Dimov
+  Distributed under the Boost Software License, Version 1.0.
+  https://boost.org/LICENSE_1_0.txt
+]
+
+[section:type_name type_name]
+
+[simplesect Authors]
+
+* Peter Dimov
+
+[endsimplesect]
+
+[section Header <boost/core/type_name.hpp>]
+
+The header `<boost/core/type_name.hpp>` defines the function
+template `boost::core::type_name<T>()` that returns a string
+representation of the name of `T`, suitable for logging or
+diagnostic display purposes.
+
+The result is similar to `boost::core::demangle( typeid(T).name() )`,
+but it's made more regular by eliminating some of the platform-specific
+differences and extra template parameters of the standard library
+container types.
+
+For example, `type_name< std::map<std::string, int> >()` returns
+`"std::map<std::string, int>"` and not
+
+```
+  std::map<std::__cxx11::basic_string<char, std::char_traits<char>,
+    std::allocator<char> >, int, std::less<std::__cxx11::basic_string<char,
+    std::char_traits<char>, std::allocator<char> > >, std::allocator<
+    std::pair<std::__cxx11::basic_string<char, std::char_traits<char>,
+    std::allocator<char> > const, int> > >
+```
+
+or
+
+```
+  class std::map<class std::basic_string<char,struct std::char_traits<char>,
+    class std::allocator<char> >,int,struct std::less<class std::basic_string<
+    char,struct std::char_traits<char>,class std::allocator<char> > >,class
+    std::allocator<struct std::pair<class std::basic_string<char,struct
+    std::char_traits<char>,class std::allocator<char> > const ,int> > >
+```
+
+The return values aren't guaranteed to be stable across Boost releases.
+
+Compilation with `-fno-rtti` is supported, but the returned type names aren't
+guaranteed to be particularly useful or unique.
+
+[section Synopsis]
+
+``
+namespace boost
+{
+namespace core
+{
+
+template<class T> std::string type_name();
+
+} // namespace core
+} // namespace boost
+``
+
+[endsect]
+
+[section template<class T> std::string type_name();]
+
+* *Returns:* A string representation of the name of `T`.
+
+[endsect]
+
+[endsect]
+
+[endsect]

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/typeinfo.qbk

@@ -0,0 +1,79 @@
+[/
+  Copyright 2014 Peter Dimov
+
+  Distributed under the Boost Software License, Version 1.0.
+
+  See accompanying file LICENSE_1_0.txt
+  or copy at http://boost.org/LICENSE_1_0.txt
+]
+
+[section:typeinfo typeinfo]
+
+[simplesect Authors]
+
+* Peter Dimov
+
+[endsimplesect]
+
+[section Header <boost/core/typeinfo.hpp>]
+
+The header `<boost/core/typeinfo.hpp>` defines a class
+`boost::core::typeinfo`, which is an alias for `std::type_info`
+when RTTI is enabled, and is a reasonable substitute when RTTI
+is not supported.
+
+The macro `BOOST_CORE_TYPEID`, when applied to a type `T`, is the
+equivalent of `typeid(T)` and produces a reference to a const
+`typeinfo` object.
+
+The function `boost::core::demangled_name` takes a
+`boost::core::typeinfo const & ti` and either returns `ti.name()`,
+when that string doesn't need to be demangled, or
+`boost::core::demangle(ti.name())`, when it does. The return type
+of `boost::core::demangled_name` is `char const*` in the first case
+and `std::string` in the second.
+
+[section Synopsis]
+
+``
+namespace boost
+{
+
+namespace core
+{
+    class typeinfo;
+    /* char const* or std::string */ demangled_name( typeinfo const & ti );
+}
+
+}
+
+#define BOOST_CORE_TYPEID(T) /*unspecified*/
+``
+
+[endsect]
+
+[section Example]
+
+``
+#include <boost/core/typeinfo.hpp>
+#include <iostream>
+
+template<class T1, class T2> struct X
+{
+};
+
+int main()
+{
+    typedef X<void const*, void(*)(float)> T;
+
+    boost::core::typeinfo const & ti = BOOST_CORE_TYPEID(T);
+
+    std::cout << boost::core::demangled_name( ti ) << std::endl;
+}
+``
+
+[endsect]
+
+[endsect]
+
+[endsect]

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/uncaught_exceptions.qbk

@@ -0,0 +1,52 @@
+[/
+ / Copyright (c) 2018 Andrey Semashev
+ /
+ / Distributed under the Boost Software License, Version 1.0. (See accompanying
+ / file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ /]
+
+[section:uncaught_exceptions uncaught_exceptions]
+
+[simplesect Authors]
+
+* Andrey Semashev
+
+[endsimplesect]
+
+[section Header <boost/core/uncaught_exceptions.hpp>]
+
+The header `<boost/core/uncaught_exceptions.hpp>` defines the `boost::core::uncaught_exceptions` function,
+which is a more portable implementation of the same named function introduced in C++17. The function
+returns the number of the currently pending exceptions. When that function returns a value greater than 0,
+throwing an exception from a destructor can terminate the program.
+
+Unfortunately, the function cannot be implemented on every pre-C++17 compiler, although the most commonly
+used compilers are supported. When the compiler does not provide the necessary functionality,
+`boost::core::uncaught_exceptions` returns a non-zero value if at least one exception is pending (i.e. not
+necessarily the number of pending exceptions), and `BOOST_CORE_UNCAUGHT_EXCEPTIONS_EMULATED` macro
+is defined.
+
+[section Example]
+``
+class my_class
+{
+private:
+    const unsigned int m_exception_count;
+
+public:
+    my_class() : m_exception_count(boost::core::uncaught_exceptions())
+    {
+    }
+
+    ~my_class() noexcept(false)
+    {
+        if (m_exception_count == boost::core::uncaught_exceptions())
+            do_something_potentially_throwing();
+    }
+};
+``
+[endsect]
+
+[endsect]
+
+[endsect]

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/use_default.qbk

@@ -0,0 +1,47 @@
+[/
+Copyright 2019 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+]
+
+[section:use_default use_default]
+
+[section Overview]
+
+The header <boost/core/use_default.hpp> provides the type `boost::use_default`
+which is used by other Boost libraries as a sentinel type in a templates to
+indicate defaults.
+
+[endsect]
+
+[section Example]
+
+```
+template<class Derived, class Base,
+   class Value = boost::use_default,
+   class CategoryOrTraversal = boost::use_default,
+   class Reference = boost::use_default,
+   class Difference = boost::use_default>
+class iterator_adaptor;
+
+template<class Value>
+class node_iterator
+    : public iterator_adaptor<node_iterator<Value>, Value*,
+        boost::use_default, boost::forward_traversal_tag>;
+```
+
+[endsect]
+
+[section Reference]
+
+```
+namespace boost {
+  struct use_default { };
+}
+```
+
+[endsect]
+
+[endsect]

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/doc/verbose_terminate_handler.qbk

@@ -0,0 +1,70 @@
+[/
+  Copyright 2022 Peter Dimov
+  Distributed under the Boost Software License, Version 1.0.
+  https://boost.org/LICENSE_1_0.txt
+]
+
+[section:verbose_terminate_handler verbose_terminate_handler]
+
+[simplesect Authors]
+
+* Peter Dimov
+
+[endsimplesect]
+
+[section Header <boost/core/verbose_terminate_handler.hpp>]
+
+The header `<boost/core/verbose_terminate_handler.hpp>` defines
+the function `void boost::core::verbose_terminate_handler()`. Its
+purpose is to be set as a terminate handler as in
+```
+    std::set_terminate( boost::core::verbose_terminate_handler );
+```
+
+When invoked, the function prints information about the current
+uncaught exception to `stderr` and then calls `std::abort`.
+
+[section Synopsis]
+
+``
+namespace boost
+{
+namespace core
+{
+
+[[noreturn]] void verbose_terminate_handler();
+
+} // namespace core
+} // namespace boost
+``
+
+[endsect]
+
+[section Example]
+
+```
+#include <boost/core/verbose_terminate_handler.hpp>
+#include <boost/throw_exception.hpp>
+#include <exception>
+
+int main()
+{
+    std::set_terminate( boost::core::verbose_terminate_handler );
+    boost::throw_with_location( std::exception() );
+}
+```
+
+Sample output:
+```
+std::terminate called after throwing an exception:
+
+      type: class boost::detail::with_throw_location<class std::exception>
+    what(): Unknown exception
+  location: example.cpp:8:12 in function 'main'
+```
+
+[endsect]
+
+[endsect]
+
+[endsect]

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/checked_delete.hpp

@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2014 Glen Fernandes
+ *
+ * Distributed under the Boost Software License, Version 1.0. (See
+ * accompanying file LICENSE_1_0.txt or copy at
+ * http://www.boost.org/LICENSE_1_0.txt)
+ */
+
+#ifndef BOOST_CHECKED_DELETE_HPP
+#define BOOST_CHECKED_DELETE_HPP
+
+// The header file at this path is deprecated;
+// use boost/core/checked_delete.hpp instead.
+
+#include <boost/core/checked_delete.hpp>
+
+#endif

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/core/addressof.hpp

@@ -0,0 +1,274 @@
+/*
+Copyright (C) 2002 Brad King (brad.king@kitware.com)
+                   Douglas Gregor (gregod@cs.rpi.edu)
+
+Copyright (C) 2002, 2008, 2013 Peter Dimov
+
+Copyright (C) 2017 Glen Joseph Fernandes (glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(See accompanying file LICENSE_1_0.txt or copy at
+http://www.boost.org/LICENSE_1_0.txt)
+*/
+
+#ifndef BOOST_CORE_ADDRESSOF_HPP
+#define BOOST_CORE_ADDRESSOF_HPP
+
+#include <boost/config.hpp>
+
+#if defined(BOOST_MSVC_FULL_VER) && BOOST_MSVC_FULL_VER >= 190024215
+#define BOOST_CORE_HAS_BUILTIN_ADDRESSOF
+#elif defined(BOOST_GCC) && BOOST_GCC >= 70000
+#define BOOST_CORE_HAS_BUILTIN_ADDRESSOF
+#elif defined(__has_builtin)
+#if __has_builtin(__builtin_addressof)
+#define BOOST_CORE_HAS_BUILTIN_ADDRESSOF
+#endif
+#endif
+
+#if defined(BOOST_CORE_HAS_BUILTIN_ADDRESSOF)
+#if defined(BOOST_NO_CXX11_CONSTEXPR)
+#define BOOST_CORE_NO_CONSTEXPR_ADDRESSOF
+#endif
+
+namespace boost {
+
+template<class T>
+BOOST_CONSTEXPR inline T*
+addressof(T& o) BOOST_NOEXCEPT
+{
+    return __builtin_addressof(o);
+}
+
+} /* boost */
+#else
+#include <boost/config/workaround.hpp>
+#include <cstddef>
+
+namespace boost {
+namespace detail {
+
+template<class T>
+class addrof_ref {
+public:
+    BOOST_FORCEINLINE addrof_ref(T& o) BOOST_NOEXCEPT
+        : o_(o) { }
+    BOOST_FORCEINLINE operator T&() const BOOST_NOEXCEPT {
+        return o_;
+    }
+private:
+    addrof_ref& operator=(const addrof_ref&);
+    T& o_;
+};
+
+template<class T>
+struct addrof {
+    static BOOST_FORCEINLINE T* get(T& o, long) BOOST_NOEXCEPT {
+        return reinterpret_cast<T*>(&
+            const_cast<char&>(reinterpret_cast<const volatile char&>(o)));
+    }
+    static BOOST_FORCEINLINE T* get(T* p, int) BOOST_NOEXCEPT {
+        return p;
+    }
+};
+
+#if !defined(BOOST_NO_CXX11_NULLPTR)
+#if !defined(BOOST_NO_CXX11_DECLTYPE) && \
+    (defined(__INTEL_COMPILER) || \
+        (defined(__clang__) && !defined(_LIBCPP_VERSION)))
+typedef decltype(nullptr) addrof_null_t;
+#else
+typedef std::nullptr_t addrof_null_t;
+#endif
+
+template<>
+struct addrof<addrof_null_t> {
+    typedef addrof_null_t type;
+    static BOOST_FORCEINLINE type* get(type& o, int) BOOST_NOEXCEPT {
+        return &o;
+    }
+};
+
+template<>
+struct addrof<const addrof_null_t> {
+    typedef const addrof_null_t type;
+    static BOOST_FORCEINLINE type* get(type& o, int) BOOST_NOEXCEPT {
+        return &o;
+    }
+};
+
+template<>
+struct addrof<volatile addrof_null_t> {
+    typedef volatile addrof_null_t type;
+    static BOOST_FORCEINLINE type* get(type& o, int) BOOST_NOEXCEPT {
+        return &o;
+    }
+};
+
+template<>
+struct addrof<const volatile addrof_null_t> {
+    typedef const volatile addrof_null_t type;
+    static BOOST_FORCEINLINE type* get(type& o, int) BOOST_NOEXCEPT {
+        return &o;
+    }
+};
+#endif
+
+} /* detail */
+
+#if defined(BOOST_NO_CXX11_SFINAE_EXPR) || \
+    defined(BOOST_NO_CXX11_CONSTEXPR) || \
+    defined(BOOST_NO_CXX11_DECLTYPE)
+#define BOOST_CORE_NO_CONSTEXPR_ADDRESSOF
+
+template<class T>
+BOOST_FORCEINLINE T*
+addressof(T& o) BOOST_NOEXCEPT
+{
+#if BOOST_WORKAROUND(BOOST_BORLANDC, BOOST_TESTED_AT(0x610)) || \
+    BOOST_WORKAROUND(__SUNPRO_CC, <= 0x5120)
+    return boost::detail::addrof<T>::get(o, 0);
+#else
+    return boost::detail::addrof<T>::get(boost::detail::addrof_ref<T>(o), 0);
+#endif
+}
+
+#if BOOST_WORKAROUND(__SUNPRO_CC, BOOST_TESTED_AT(0x590))
+namespace detail {
+
+template<class T>
+struct addrof_result {
+    typedef T* type;
+};
+
+} /* detail */
+
+template<class T, std::size_t N>
+BOOST_FORCEINLINE typename boost::detail::addrof_result<T[N]>::type
+addressof(T (&o)[N]) BOOST_NOEXCEPT
+{
+    return &o;
+}
+#endif
+
+#if BOOST_WORKAROUND(BOOST_BORLANDC, BOOST_TESTED_AT(0x564))
+template<class T, std::size_t N>
+BOOST_FORCEINLINE
+T (*addressof(T (&o)[N]) BOOST_NOEXCEPT)[N]
+{
+   return reinterpret_cast<T(*)[N]>(&o);
+}
+
+template<class T, std::size_t N>
+BOOST_FORCEINLINE
+const T (*addressof(const T (&o)[N]) BOOST_NOEXCEPT)[N]
+{
+   return reinterpret_cast<const T(*)[N]>(&o);
+}
+#endif
+#else
+namespace detail {
+
+template<class T>
+T addrof_declval() BOOST_NOEXCEPT;
+
+template<class>
+struct addrof_void {
+    typedef void type;
+};
+
+template<class T, class E = void>
+struct addrof_member_operator {
+    static constexpr bool value = false;
+};
+
+template<class T>
+struct addrof_member_operator<T, typename
+    addrof_void<decltype(addrof_declval<T&>().operator&())>::type> {
+    static constexpr bool value = true;
+};
+
+#if BOOST_WORKAROUND(BOOST_INTEL, < 1600)
+struct addrof_addressable { };
+
+addrof_addressable*
+operator&(addrof_addressable&) BOOST_NOEXCEPT;
+#endif
+
+template<class T, class E = void>
+struct addrof_non_member_operator {
+    static constexpr bool value = false;
+};
+
+template<class T>
+struct addrof_non_member_operator<T, typename
+    addrof_void<decltype(operator&(addrof_declval<T&>()))>::type> {
+    static constexpr bool value = true;
+};
+
+template<class T, class E = void>
+struct addrof_expression {
+    static constexpr bool value = false;
+};
+
+template<class T>
+struct addrof_expression<T,
+    typename addrof_void<decltype(&addrof_declval<T&>())>::type> {
+    static constexpr bool value = true;
+};
+
+template<class T>
+struct addrof_is_constexpr {
+    static constexpr bool value = addrof_expression<T>::value &&
+        !addrof_member_operator<T>::value &&
+        !addrof_non_member_operator<T>::value;
+};
+
+template<bool E, class T>
+struct addrof_if { };
+
+template<class T>
+struct addrof_if<true, T> {
+    typedef T* type;
+};
+
+template<class T>
+BOOST_FORCEINLINE
+typename addrof_if<!addrof_is_constexpr<T>::value, T>::type
+addressof(T& o) BOOST_NOEXCEPT
+{
+    return addrof<T>::get(addrof_ref<T>(o), 0);
+}
+
+template<class T>
+constexpr BOOST_FORCEINLINE
+typename addrof_if<addrof_is_constexpr<T>::value, T>::type
+addressof(T& o) BOOST_NOEXCEPT
+{
+    return &o;
+}
+
+} /* detail */
+
+template<class T>
+constexpr BOOST_FORCEINLINE T*
+addressof(T& o) BOOST_NOEXCEPT
+{
+    return boost::detail::addressof(o);
+}
+#endif
+
+} /* boost */
+#endif
+
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) && \
+    !defined(BOOST_NO_CXX11_DELETED_FUNCTIONS)
+namespace boost {
+
+template<class T>
+const T* addressof(const T&&) = delete;
+
+} /* boost */
+#endif
+
+#endif

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/core/alloc_construct.hpp

@@ -0,0 +1,169 @@
+/*
+Copyright 2019 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#ifndef BOOST_CORE_ALLOC_CONSTRUCT_HPP
+#define BOOST_CORE_ALLOC_CONSTRUCT_HPP
+
+#include <boost/core/noinit_adaptor.hpp>
+
+namespace boost {
+
+template<class A, class T>
+inline void
+alloc_destroy(A& a, T* p)
+{
+    boost::allocator_destroy(a, p);
+}
+
+template<class A, class T>
+inline void
+alloc_destroy_n(A& a, T* p, std::size_t n)
+{
+    while (n > 0) {
+        boost::allocator_destroy(a, p + --n);
+    }
+}
+
+template<class A, class T>
+inline void
+alloc_destroy(noinit_adaptor<A>&, T* p)
+{
+    p->~T();
+}
+
+template<class A, class T>
+inline void
+alloc_destroy_n(noinit_adaptor<A>&, T* p, std::size_t n)
+{
+    while (n > 0) {
+        p[--n].~T();
+    }
+}
+
+namespace detail {
+
+template<class A, class T>
+class alloc_destroyer {
+public:
+    alloc_destroyer(A& a, T* p) BOOST_NOEXCEPT
+        : a_(a),
+          p_(p),
+          n_(0) { }
+
+    ~alloc_destroyer() {
+        boost::alloc_destroy_n(a_, p_, n_);
+    }
+
+    std::size_t& size() BOOST_NOEXCEPT {
+        return n_;
+    }
+
+private:
+    alloc_destroyer(const alloc_destroyer&);
+    alloc_destroyer& operator=(const alloc_destroyer&);
+
+    A& a_;
+    T* p_;
+    std::size_t n_;
+};
+
+} /* detail */
+
+template<class A, class T>
+inline void
+alloc_construct(A& a, T* p)
+{
+    boost::allocator_construct(a, p);
+}
+
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
+template<class A, class T, class U, class... V>
+inline void
+alloc_construct(A& a, T* p, U&& u, V&&... v)
+{
+    boost::allocator_construct(a, p, std::forward<U>(u),
+        std::forward<V>(v)...);
+}
+#else
+template<class A, class T, class U>
+inline void
+alloc_construct(A& a, T* p, U&& u)
+{
+    boost::allocator_construct(a, p, std::forward<U>(u));
+}
+#endif
+#else
+template<class A, class T, class U>
+inline void
+alloc_construct(A& a, T* p, const U& u)
+{
+    boost::allocator_construct(a, p, u);
+}
+
+template<class A, class T, class U>
+inline void
+alloc_construct(A& a, T* p, U& u)
+{
+    boost::allocator_construct(a, p, u);
+}
+#endif
+
+template<class A, class T>
+inline void
+alloc_construct_n(A& a, T* p, std::size_t n)
+{
+    detail::alloc_destroyer<A, T> hold(a, p);
+    for (std::size_t& i = hold.size(); i < n; ++i) {
+        boost::allocator_construct(a, p + i);
+    }
+    hold.size() = 0;
+}
+
+template<class A, class T>
+inline void
+alloc_construct_n(A& a, T* p, std::size_t n, const T* l, std::size_t m)
+{
+    detail::alloc_destroyer<A, T> hold(a, p);
+    for (std::size_t& i = hold.size(); i < n; ++i) {
+        boost::allocator_construct(a, p + i, l[i % m]);
+    }
+    hold.size() = 0;
+}
+
+template<class A, class T, class I>
+inline void
+alloc_construct_n(A& a, T* p, std::size_t n, I b)
+{
+    detail::alloc_destroyer<A, T> hold(a, p);
+    for (std::size_t& i = hold.size(); i < n; void(++i), void(++b)) {
+        boost::allocator_construct(a, p + i, *b);
+    }
+    hold.size() = 0;
+}
+
+template<class A, class T>
+inline void
+alloc_construct(noinit_adaptor<A>&, T* p)
+{
+    ::new(static_cast<void*>(p)) T;
+}
+
+template<class A, class T>
+inline void
+alloc_construct_n(noinit_adaptor<A>& a, T* p, std::size_t n)
+{
+    detail::alloc_destroyer<noinit_adaptor<A>, T> hold(a, p);
+    for (std::size_t& i = hold.size(); i < n; ++i) {
+        ::new(static_cast<void*>(p + i)) T;
+    }
+    hold.size() = 0;
+}
+
+} /* boost */
+
+#endif

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/core/allocator_access.hpp

@@ -0,0 +1,728 @@
+/*
+Copyright 2020-2021 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#ifndef BOOST_CORE_ALLOCATOR_ACCESS_HPP
+#define BOOST_CORE_ALLOCATOR_ACCESS_HPP
+
+#include <boost/config.hpp>
+#include <boost/core/pointer_traits.hpp>
+#include <limits>
+#include <new>
+#if !defined(BOOST_NO_CXX11_ALLOCATOR)
+#include <type_traits>
+#endif
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+#include <utility>
+#endif
+
+#if defined(BOOST_GCC_VERSION) && (BOOST_GCC_VERSION >= 40300)
+#define BOOST_DETAIL_ALLOC_EMPTY(T) __is_empty(T)
+#elif defined(BOOST_INTEL) && defined(_MSC_VER) && (_MSC_VER >= 1500)
+#define BOOST_DETAIL_ALLOC_EMPTY(T) __is_empty(T)
+#elif defined(BOOST_MSVC) && (BOOST_MSVC >= 1400)
+#define BOOST_DETAIL_ALLOC_EMPTY(T) __is_empty(T)
+#elif defined(BOOST_CLANG) && !defined(__CUDACC__)
+#if __has_feature(is_empty)
+#define BOOST_DETAIL_ALLOC_EMPTY(T) __is_empty(T)
+#endif
+#elif defined(__SUNPRO_CC) && (__SUNPRO_CC >= 0x5130)
+#define BOOST_DETAIL_ALLOC_EMPTY(T) __oracle_is_empty(T)
+#elif defined(__ghs__) && (__GHS_VERSION_NUMBER >= 600)
+#define BOOST_DETAIL_ALLOC_EMPTY(T) __is_empty(T)
+#elif defined(BOOST_CODEGEARC)
+#define BOOST_DETAIL_ALLOC_EMPTY(T) __is_empty(T)
+#endif
+
+#if defined(_LIBCPP_SUPPRESS_DEPRECATED_PUSH)
+_LIBCPP_SUPPRESS_DEPRECATED_PUSH
+#endif
+#if defined(_STL_DISABLE_DEPRECATED_WARNING)
+_STL_DISABLE_DEPRECATED_WARNING
+#endif
+#if defined(_MSC_VER)
+#pragma warning(push)
+#pragma warning(disable:4996)
+#endif
+
+namespace boost {
+
+template<class A>
+struct allocator_value_type {
+    typedef typename A::value_type type;
+};
+
+namespace detail {
+
+template<class A, class = void>
+struct alloc_ptr {
+    typedef typename boost::allocator_value_type<A>::type* type;
+};
+
+template<class>
+struct alloc_void {
+    typedef void type;
+};
+
+template<class A>
+struct alloc_ptr<A,
+    typename alloc_void<typename A::pointer>::type> {
+    typedef typename A::pointer type;
+};
+
+} /* detail */
+
+template<class A>
+struct allocator_pointer {
+    typedef typename detail::alloc_ptr<A>::type type;
+};
+
+namespace detail {
+
+template<class A, class = void>
+struct alloc_const_ptr {
+    typedef typename boost::pointer_traits<typename
+        boost::allocator_pointer<A>::type>::template rebind_to<const typename
+            boost::allocator_value_type<A>::type>::type type;
+};
+
+template<class A>
+struct alloc_const_ptr<A,
+    typename alloc_void<typename A::const_pointer>::type> {
+    typedef typename A::const_pointer type;
+};
+
+} /* detail */
+
+template<class A>
+struct allocator_const_pointer {
+    typedef typename detail::alloc_const_ptr<A>::type type;
+};
+
+namespace detail {
+
+template<class, class>
+struct alloc_to { };
+
+#if defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
+template<template<class> class A, class T, class U>
+struct alloc_to<A<U>, T> {
+    typedef A<T> type;
+};
+
+template<template<class, class> class A, class T, class U, class V>
+struct alloc_to<A<U, V>, T> {
+    typedef A<T, V> type;
+};
+
+template<template<class, class, class> class A, class T, class U, class V1,
+    class V2>
+struct alloc_to<A<U, V1, V2>, T> {
+    typedef A<T, V1, V2> type;
+};
+#else
+template<template<class, class...> class A, class T, class U, class... V>
+struct alloc_to<A<U, V...>, T> {
+    typedef A<T, V...> type;
+};
+#endif
+
+template<class A, class T, class = void>
+struct alloc_rebind {
+    typedef typename alloc_to<A, T>::type type;
+};
+
+template<class A, class T>
+struct alloc_rebind<A, T,
+    typename alloc_void<typename A::template rebind<T>::other>::type> {
+    typedef typename A::template rebind<T>::other type;
+};
+
+} /* detail */
+
+template<class A, class T>
+struct allocator_rebind {
+    typedef typename detail::alloc_rebind<A, T>::type type;
+};
+
+namespace detail {
+
+template<class A, class = void>
+struct alloc_void_ptr {
+     typedef typename boost::pointer_traits<typename
+        boost::allocator_pointer<A>::type>::template
+            rebind_to<void>::type type;
+};
+
+template<class A>
+struct alloc_void_ptr<A,
+    typename alloc_void<typename A::void_pointer>::type> {
+    typedef typename A::void_pointer type;
+};
+
+} /* detail */
+
+template<class A>
+struct allocator_void_pointer {
+    typedef typename detail::alloc_void_ptr<A>::type type;
+};
+
+namespace detail {
+
+template<class A, class = void>
+struct alloc_const_void_ptr {
+     typedef typename boost::pointer_traits<typename
+        boost::allocator_pointer<A>::type>::template
+            rebind_to<const void>::type type;
+};
+
+template<class A>
+struct alloc_const_void_ptr<A,
+    typename alloc_void<typename A::const_void_pointer>::type> {
+    typedef typename A::const_void_pointer type;
+};
+
+} /* detail */
+
+template<class A>
+struct allocator_const_void_pointer {
+    typedef typename detail::alloc_const_void_ptr<A>::type type;
+};
+
+namespace detail {
+
+template<class A, class = void>
+struct alloc_diff_type {
+    typedef typename boost::pointer_traits<typename
+        boost::allocator_pointer<A>::type>::difference_type type;
+};
+
+template<class A>
+struct alloc_diff_type<A,
+    typename alloc_void<typename A::difference_type>::type> {
+    typedef typename A::difference_type type;
+};
+
+} /* detail */
+
+template<class A>
+struct allocator_difference_type {
+    typedef typename detail::alloc_diff_type<A>::type type;
+};
+
+namespace detail {
+
+#if defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class A, class = void>
+struct alloc_size_type {
+    typedef std::size_t type;
+};
+#else
+template<class A, class = void>
+struct alloc_size_type {
+    typedef typename std::make_unsigned<typename
+        boost::allocator_difference_type<A>::type>::type type;
+};
+#endif
+
+template<class A>
+struct alloc_size_type<A,
+    typename alloc_void<typename A::size_type>::type> {
+    typedef typename A::size_type type;
+};
+
+} /* detail */
+
+template<class A>
+struct allocator_size_type {
+    typedef typename detail::alloc_size_type<A>::type type;
+};
+
+namespace detail {
+
+#if defined(BOOST_NO_CXX11_ALLOCATOR)
+template<bool V>
+struct alloc_bool {
+    typedef bool value_type;
+    typedef alloc_bool type;
+
+    static const bool value = V;
+
+    operator bool() const BOOST_NOEXCEPT {
+        return V;
+    }
+
+    bool operator()() const BOOST_NOEXCEPT {
+        return V;
+    }
+};
+
+template<bool V>
+const bool alloc_bool<V>::value;
+
+typedef alloc_bool<false> alloc_false;
+#else
+typedef std::false_type alloc_false;
+#endif
+
+template<class A, class = void>
+struct alloc_pocca {
+    typedef alloc_false type;
+};
+
+template<class A>
+struct alloc_pocca<A,
+    typename alloc_void<typename
+        A::propagate_on_container_copy_assignment>::type> {
+    typedef typename A::propagate_on_container_copy_assignment type;
+};
+
+} /* detail */
+
+template<class A, class = void>
+struct allocator_propagate_on_container_copy_assignment {
+    typedef typename detail::alloc_pocca<A>::type type;
+};
+
+namespace detail {
+
+template<class A, class = void>
+struct alloc_pocma {
+    typedef alloc_false type;
+};
+
+template<class A>
+struct alloc_pocma<A,
+    typename alloc_void<typename
+        A::propagate_on_container_move_assignment>::type> {
+    typedef typename A::propagate_on_container_move_assignment type;
+};
+
+} /* detail */
+
+template<class A>
+struct allocator_propagate_on_container_move_assignment {
+    typedef typename detail::alloc_pocma<A>::type type;
+};
+
+namespace detail {
+
+template<class A, class = void>
+struct alloc_pocs {
+    typedef alloc_false type;
+};
+
+template<class A>
+struct alloc_pocs<A,
+    typename alloc_void<typename A::propagate_on_container_swap>::type> {
+    typedef typename A::propagate_on_container_swap type;
+};
+
+} /* detail */
+
+template<class A>
+struct allocator_propagate_on_container_swap {
+    typedef typename detail::alloc_pocs<A>::type type;
+};
+
+namespace detail {
+
+#if !defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class A, class = void>
+struct alloc_equal {
+    typedef typename std::is_empty<A>::type type;
+};
+#elif defined(BOOST_DETAIL_ALLOC_EMPTY)
+template<class A, class = void>
+struct alloc_equal {
+    typedef alloc_bool<BOOST_DETAIL_ALLOC_EMPTY(A)> type;
+};
+#else
+template<class A, class = void>
+struct alloc_equal {
+    typedef alloc_false type;
+};
+#endif
+
+template<class A>
+struct alloc_equal<A,
+    typename alloc_void<typename A::is_always_equal>::type> {
+    typedef typename A::is_always_equal type;
+};
+
+} /* detail */
+
+template<class A>
+struct allocator_is_always_equal {
+    typedef typename detail::alloc_equal<A>::type type;
+};
+
+template<class A>
+inline typename allocator_pointer<A>::type
+allocator_allocate(A& a, typename allocator_size_type<A>::type n)
+{
+    return a.allocate(n);
+}
+
+template<class A>
+inline void
+allocator_deallocate(A& a, typename allocator_pointer<A>::type p,
+    typename allocator_size_type<A>::type n)
+{
+    a.deallocate(p, n);
+}
+
+#if defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class A>
+inline typename allocator_pointer<A>::type
+allocator_allocate(A& a, typename allocator_size_type<A>::type n,
+    typename allocator_const_void_pointer<A>::type h)
+{
+    return a.allocate(n, h);
+}
+#else
+namespace detail {
+
+template<class>
+struct alloc_no {
+    char x, y;
+};
+
+template<class A>
+class alloc_has_allocate {
+    template<class O>
+    static auto check(int)
+    -> alloc_no<decltype(std::declval<O&>().allocate(std::declval<typename
+        boost::allocator_size_type<A>::type>(), std::declval<typename
+            boost::allocator_const_void_pointer<A>::type>()))>;
+
+    template<class>
+    static char check(long);
+
+public:
+    BOOST_STATIC_CONSTEXPR bool value = sizeof(check<A>(0)) > 1;
+};
+
+} /* detail */
+
+template<class A>
+inline typename std::enable_if<detail::alloc_has_allocate<A>::value,
+    typename allocator_pointer<A>::type>::type
+allocator_allocate(A& a, typename allocator_size_type<A>::type n,
+    typename allocator_const_void_pointer<A>::type h)
+{
+    return a.allocate(n, h);
+}
+
+template<class A>
+inline typename std::enable_if<!detail::alloc_has_allocate<A>::value,
+    typename allocator_pointer<A>::type>::type
+allocator_allocate(A& a, typename allocator_size_type<A>::type n,
+    typename allocator_const_void_pointer<A>::type)
+{
+    return a.allocate(n);
+}
+#endif
+
+#if defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class A, class T>
+inline void
+allocator_construct(A&, T* p)
+{
+    ::new((void*)p) T();
+}
+
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
+template<class A, class T, class V, class... Args>
+inline void
+allocator_construct(A&, T* p, V&& v, Args&&... args)
+{
+    ::new((void*)p) T(std::forward<V>(v), std::forward<Args>(args)...);
+}
+#else
+template<class A, class T, class V>
+inline void
+allocator_construct(A&, T* p, V&& v)
+{
+    ::new((void*)p) T(std::forward<V>(v));
+}
+#endif
+#else
+template<class A, class T, class V>
+inline void
+allocator_construct(A&, T* p, const V& v)
+{
+    ::new((void*)p) T(v);
+}
+
+template<class A, class T, class V>
+inline void
+allocator_construct(A&, T* p, V& v)
+{
+    ::new((void*)p) T(v);
+}
+#endif
+#else
+namespace detail {
+
+template<class A, class T, class... Args>
+class alloc_has_construct {
+    template<class O>
+    static auto check(int)
+    -> alloc_no<decltype(std::declval<O&>().construct(std::declval<T*>(),
+        std::declval<Args&&>()...))>;
+
+    template<class>
+    static char check(long);
+
+public:
+    BOOST_STATIC_CONSTEXPR bool value = sizeof(check<A>(0)) > 1;
+};
+
+} /* detail */
+
+template<class A, class T, class... Args>
+inline typename std::enable_if<detail::alloc_has_construct<A, T,
+    Args...>::value>::type
+allocator_construct(A& a, T* p, Args&&... args)
+{
+    a.construct(p, std::forward<Args>(args)...);
+}
+
+template<class A, class T, class... Args>
+inline typename std::enable_if<!detail::alloc_has_construct<A, T,
+    Args...>::value>::type
+allocator_construct(A&, T* p, Args&&... args)
+{
+    ::new((void*)p) T(std::forward<Args>(args)...);
+}
+#endif
+
+#if defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class A, class T>
+inline void
+allocator_destroy(A&, T* p)
+{
+    p->~T();
+    (void)p;
+}
+#else
+namespace detail {
+
+template<class A, class T>
+class alloc_has_destroy {
+    template<class O>
+    static auto check(int)
+    -> alloc_no<decltype(std::declval<O&>().destroy(std::declval<T*>()))>;
+
+    template<class>
+    static char check(long);
+
+public:
+    BOOST_STATIC_CONSTEXPR bool value = sizeof(check<A>(0)) > 1;
+};
+
+} /* detail */
+
+template<class A, class T>
+inline typename std::enable_if<detail::alloc_has_destroy<A, T>::value>::type
+allocator_destroy(A& a, T* p)
+{
+    a.destroy(p);
+}
+
+template<class A, class T>
+inline typename std::enable_if<!detail::alloc_has_destroy<A, T>::value>::type
+allocator_destroy(A&, T* p)
+{
+    p->~T();
+    (void)p;
+}
+#endif
+
+namespace detail {
+
+#if defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class T, T>
+struct alloc_no {
+    char x, y;
+};
+
+template<class A>
+class alloc_has_max_size {
+    template<class O>
+    static alloc_no<typename boost::allocator_size_type<O>::type(O::*)(),
+        &O::max_size> check(int);
+
+    template<class O>
+    static alloc_no<typename boost::allocator_size_type<O>::type(O::*)() const,
+        &O::max_size> check(int);
+
+    template<class O>
+    static alloc_no<typename boost::allocator_size_type<O>::type(*)(),
+        &O::max_size> check(int);
+
+    template<class>
+    static char check(long);
+
+public:
+    BOOST_STATIC_CONSTEXPR bool value = sizeof(check<A>(0)) > 1;
+};
+#else
+template<class A>
+class alloc_has_max_size {
+    template<class O>
+    static auto check(int)
+    -> alloc_no<decltype(std::declval<const O&>().max_size())>;
+
+    template<class>
+    static char check(long);
+
+public:
+    BOOST_STATIC_CONSTEXPR bool value = sizeof(check<A>(0)) > 1;
+};
+#endif
+
+template<bool, class>
+struct alloc_if { };
+
+template<class T>
+struct alloc_if<true, T> {
+    typedef T type;
+};
+
+} /* detail */
+
+template<class A>
+inline typename detail::alloc_if<detail::alloc_has_max_size<A>::value,
+    typename allocator_size_type<A>::type>::type
+allocator_max_size(const A& a) BOOST_NOEXCEPT
+{
+    return a.max_size();
+}
+
+template<class A>
+inline typename detail::alloc_if<!detail::alloc_has_max_size<A>::value,
+    typename allocator_size_type<A>::type>::type
+allocator_max_size(const A&) BOOST_NOEXCEPT
+{
+    return (std::numeric_limits<typename
+        allocator_size_type<A>::type>::max)() /
+            sizeof(typename allocator_value_type<A>::type);
+}
+
+namespace detail {
+
+#if defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class A>
+class alloc_has_soccc {
+    template<class O>
+    static alloc_no<O(O::*)(), &O::select_on_container_copy_construction>
+    check(int);
+
+    template<class O>
+    static alloc_no<O(O::*)() const, &O::select_on_container_copy_construction>
+    check(int);
+
+    template<class O>
+    static alloc_no<O(*)(), &O::select_on_container_copy_construction>
+    check(int);
+
+    template<class>
+    static char check(long);
+
+public:
+    BOOST_STATIC_CONSTEXPR bool value = sizeof(check<A>(0)) > 1;
+};
+#else
+template<class A>
+class alloc_has_soccc {
+    template<class O>
+    static auto check(int) -> alloc_no<decltype(std::declval<const
+        O&>().select_on_container_copy_construction())>;
+
+    template<class>
+    static char check(long);
+
+public:
+    BOOST_STATIC_CONSTEXPR bool value = sizeof(check<A>(0)) > 1;
+};
+#endif
+
+} /* detail */
+
+template<class A>
+inline typename detail::alloc_if<detail::alloc_has_soccc<A>::value, A>::type
+allocator_select_on_container_copy_construction(const A& a)
+{
+    return a.select_on_container_copy_construction();
+}
+
+template<class A>
+inline typename detail::alloc_if<!detail::alloc_has_soccc<A>::value, A>::type
+allocator_select_on_container_copy_construction(const A& a)
+{
+    return a;
+}
+
+#if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
+template<class A>
+using allocator_value_type_t = typename allocator_value_type<A>::type;
+
+template<class A>
+using allocator_pointer_t = typename allocator_pointer<A>::type;
+
+template<class A>
+using allocator_const_pointer_t = typename allocator_const_pointer<A>::type;
+
+template<class A>
+using allocator_void_pointer_t = typename allocator_void_pointer<A>::type;
+
+template<class A>
+using allocator_const_void_pointer_t =
+    typename allocator_const_void_pointer<A>::type;
+
+template<class A>
+using allocator_difference_type_t =
+    typename allocator_difference_type<A>::type;
+
+template<class A>
+using allocator_size_type_t = typename allocator_size_type<A>::type;
+
+template<class A>
+using allocator_propagate_on_container_copy_assignment_t =
+    typename allocator_propagate_on_container_copy_assignment<A>::type;
+
+template<class A>
+using allocator_propagate_on_container_move_assignment_t =
+    typename allocator_propagate_on_container_move_assignment<A>::type;
+
+template<class A>
+using allocator_propagate_on_container_swap_t =
+    typename allocator_propagate_on_container_swap<A>::type;
+
+template<class A>
+using allocator_is_always_equal_t =
+    typename allocator_is_always_equal<A>::type;
+
+template<class A, class T>
+using allocator_rebind_t = typename allocator_rebind<A, T>::type;
+#endif
+
+} /* boost */
+
+#if defined(_LIBCPP_SUPPRESS_DEPRECATED_POP)
+_LIBCPP_SUPPRESS_DEPRECATED_POP
+#endif
+#if defined(_STL_RESTORE_DEPRECATED_WARNING)
+_STL_RESTORE_DEPRECATED_WARNING
+#endif
+#if defined(_MSC_VER)
+#pragma warning(pop)
+#endif
+
+#endif

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/core/allocator_traits.hpp

@@ -0,0 +1,112 @@
+/*
+Copyright 2021 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#ifndef BOOST_CORE_ALLOCATOR_TRAITS_HPP
+#define BOOST_CORE_ALLOCATOR_TRAITS_HPP
+
+#include <boost/core/allocator_access.hpp>
+
+namespace boost {
+
+template<class A>
+struct allocator_traits {
+    typedef A allocator_type;
+
+    typedef typename allocator_value_type<A>::type value_type;
+
+    typedef typename allocator_pointer<A>::type pointer;
+
+    typedef typename allocator_const_pointer<A>::type const_pointer;
+
+    typedef typename allocator_void_pointer<A>::type void_pointer;
+
+    typedef typename allocator_const_void_pointer<A>::type const_void_pointer;
+
+    typedef typename allocator_difference_type<A>::type difference_type;
+
+    typedef typename allocator_size_type<A>::type size_type;
+
+    typedef typename allocator_propagate_on_container_copy_assignment<A>::type
+        propagate_on_container_copy_assignment;
+
+    typedef typename allocator_propagate_on_container_move_assignment<A>::type
+        propagate_on_container_move_assignment;
+
+    typedef typename allocator_propagate_on_container_swap<A>::type
+        propagate_on_container_swap;
+
+    typedef typename allocator_is_always_equal<A>::type is_always_equal;
+
+#if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
+    template<class T>
+    using rebind_traits = allocator_traits<typename
+        allocator_rebind<A, T>::type>;
+#else
+    template<class T>
+    struct rebind_traits
+        : allocator_traits<typename allocator_rebind<A, T>::type> { };
+#endif
+
+    static pointer allocate(A& a, size_type n) {
+        return boost::allocator_allocate(a, n);
+    }
+
+    static pointer allocate(A& a, size_type n, const_void_pointer h) {
+        return boost::allocator_allocate(a, n, h);
+    }
+
+    static void deallocate(A& a, pointer p, size_type n) {
+        return boost::allocator_deallocate(a, p, n);
+    }
+
+    template<class T>
+    static void construct(A& a, T* p) {
+        boost::allocator_construct(a, p);
+    }
+
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
+    template<class T, class V, class... Args>
+    static void construct(A& a, T* p, V&& v, Args&&... args) {
+        boost::allocator_construct(a, p, std::forward<V>(v),
+            std::forward<Args>(args)...);
+    }
+#else
+    template<class T, class V>
+    static void construct(A& a, T* p, V&& v) {
+        boost::allocator_construct(a, p, std::forward<V>(v));
+    }
+#endif
+#else
+    template<class T, class V>
+    static void construct(A& a, T* p, const V& v) {
+        boost::allocator_construct(a, p, v);
+    }
+
+    template<class T, class V>
+    static void construct(A& a, T* p, V& v) {
+        boost::allocator_construct(a, p, v);
+    }
+#endif
+
+    template<class T>
+    static void destroy(A& a, T* p) {
+        boost::allocator_destroy(a, p);
+    }
+
+    static size_type max_size(const A& a) BOOST_NOEXCEPT {
+        return boost::allocator_max_size(a);
+    }
+
+    static A select_on_container_copy_construction(const A& a) {
+        return boost::allocator_select_on_container_copy_construction(a);
+    }
+};
+
+} /* boost */
+
+#endif

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/core/bit.hpp

@@ -0,0 +1,595 @@
+#ifndef BOOST_CORE_BIT_HPP_INCLUDED
+#define BOOST_CORE_BIT_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+// boost/core/bit.hpp
+//
+// A portable version of the C++20 standard header <bit>
+//
+// Copyright 2020 Peter Dimov
+// Distributed under the Boost Software License, Version 1.0.
+// https://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/config.hpp>
+#include <boost/static_assert.hpp>
+#include <boost/cstdint.hpp>
+#include <limits>
+#include <cstring>
+
+#if defined(_MSC_VER)
+
+# include <intrin.h>
+# pragma intrinsic(_BitScanForward)
+# pragma intrinsic(_BitScanReverse)
+
+# if defined(_M_X64)
+#  pragma intrinsic(_BitScanForward64)
+#  pragma intrinsic(_BitScanReverse64)
+# endif
+
+# pragma warning(push)
+# pragma warning(disable: 4127) // conditional expression is constant
+# pragma warning(disable: 4244) // conversion from int to T
+
+#endif // defined(_MSC_VER)
+
+namespace boost
+{
+namespace core
+{
+
+// bit_cast
+
+template<class To, class From>
+To bit_cast( From const & from ) BOOST_NOEXCEPT
+{
+    BOOST_STATIC_ASSERT( sizeof(To) == sizeof(From) );
+
+    To to;
+    std::memcpy( &to, &from, sizeof(To) );
+    return to;
+}
+
+// countl
+
+#if defined(__GNUC__) || defined(__clang__)
+
+namespace detail
+{
+
+BOOST_CONSTEXPR inline int countl_impl( unsigned char x ) BOOST_NOEXCEPT
+{
+    return x? __builtin_clz( x ) - ( std::numeric_limits<unsigned int>::digits - std::numeric_limits<unsigned char>::digits ): std::numeric_limits<unsigned char>::digits;
+}
+
+BOOST_CONSTEXPR inline int countl_impl( unsigned short x ) BOOST_NOEXCEPT
+{
+    return x? __builtin_clz( x ) - ( std::numeric_limits<unsigned int>::digits - std::numeric_limits<unsigned short>::digits ): std::numeric_limits<unsigned short>::digits;
+}
+
+BOOST_CONSTEXPR inline int countl_impl( unsigned int x ) BOOST_NOEXCEPT
+{
+    return x? __builtin_clz( x ): std::numeric_limits<unsigned int>::digits;
+}
+
+BOOST_CONSTEXPR inline int countl_impl( unsigned long x ) BOOST_NOEXCEPT
+{
+    return x? __builtin_clzl( x ): std::numeric_limits<unsigned long>::digits;
+}
+
+BOOST_CONSTEXPR inline int countl_impl( boost::ulong_long_type x ) BOOST_NOEXCEPT
+{
+    return x? __builtin_clzll( x ): std::numeric_limits<boost::ulong_long_type>::digits;
+}
+
+} // namespace detail
+
+template<class T>
+BOOST_CONSTEXPR int countl_zero( T x ) BOOST_NOEXCEPT
+{
+    return boost::core::detail::countl_impl( x );
+}
+
+#else // defined(__GNUC__) || defined(__clang__)
+
+namespace detail
+{
+
+inline int countl_impl( boost::uint32_t x ) BOOST_NOEXCEPT
+{
+#if defined(_MSC_VER)
+
+    unsigned long r;
+
+    if( _BitScanReverse( &r, x ) )
+    {
+        return 31 - static_cast<int>( r );
+    }
+    else
+    {
+        return 32;
+    }
+
+#else
+
+    static unsigned char const mod37[ 37 ] = { 32, 31, 6, 30, 9, 5, 0, 29, 16, 8, 2, 4, 21, 0, 19, 28, 25, 15, 0, 7, 10, 1, 17, 3, 22, 20, 26, 0, 11, 18, 23, 27, 12, 24, 13, 14, 0 };
+
+    x |= x >> 1;
+    x |= x >> 2;
+    x |= x >> 4;
+    x |= x >> 8;
+    x |= x >> 16;
+
+    return mod37[ x % 37 ];
+
+#endif
+}
+
+inline int countl_impl( boost::uint64_t x ) BOOST_NOEXCEPT
+{
+#if defined(_MSC_VER) && defined(_M_X64)
+
+    unsigned long r;
+
+    if( _BitScanReverse64( &r, x ) )
+    {
+        return 63 - static_cast<int>( r );
+    }
+    else
+    {
+        return 64;
+    }
+
+#else
+
+    return static_cast<boost::uint32_t>( x >> 32 ) != 0?
+        boost::core::detail::countl_impl( static_cast<boost::uint32_t>( x >> 32 ) ):
+        boost::core::detail::countl_impl( static_cast<boost::uint32_t>( x ) ) + 32;
+
+#endif
+}
+
+inline int countl_impl( boost::uint8_t x ) BOOST_NOEXCEPT
+{
+    return boost::core::detail::countl_impl( static_cast<boost::uint32_t>( x ) ) - 24;
+}
+
+inline int countl_impl( boost::uint16_t x ) BOOST_NOEXCEPT
+{
+    return boost::core::detail::countl_impl( static_cast<boost::uint32_t>( x ) ) - 16;
+}
+
+} // namespace detail
+
+template<class T>
+int countl_zero( T x ) BOOST_NOEXCEPT
+{
+    BOOST_STATIC_ASSERT( sizeof(T) == sizeof(boost::uint8_t) || sizeof(T) == sizeof(boost::uint16_t) || sizeof(T) == sizeof(boost::uint32_t) || sizeof(T) == sizeof(boost::uint64_t) );
+
+    if( sizeof(T) == sizeof(boost::uint8_t) )
+    {
+        return boost::core::detail::countl_impl( static_cast<boost::uint8_t>( x ) );
+    }
+    else if( sizeof(T) == sizeof(boost::uint16_t) )
+    {
+        return boost::core::detail::countl_impl( static_cast<boost::uint16_t>( x ) );
+    }
+    else if( sizeof(T) == sizeof(boost::uint32_t) )
+    {
+        return boost::core::detail::countl_impl( static_cast<boost::uint32_t>( x ) );
+    }
+    else
+    {
+        return boost::core::detail::countl_impl( static_cast<boost::uint64_t>( x ) );
+    }
+}
+
+#endif // defined(__GNUC__) || defined(__clang__)
+
+template<class T>
+BOOST_CONSTEXPR int countl_one( T x ) BOOST_NOEXCEPT
+{
+    return boost::core::countl_zero( static_cast<T>( ~x ) );
+}
+
+// countr
+
+#if defined(__GNUC__) || defined(__clang__)
+
+namespace detail
+{
+
+BOOST_CONSTEXPR inline int countr_impl( unsigned char x ) BOOST_NOEXCEPT
+{
+    return x? __builtin_ctz( x ): std::numeric_limits<unsigned char>::digits;
+}
+
+BOOST_CONSTEXPR inline int countr_impl( unsigned short x ) BOOST_NOEXCEPT
+{
+    return x? __builtin_ctz( x ): std::numeric_limits<unsigned short>::digits;
+}
+
+BOOST_CONSTEXPR inline int countr_impl( unsigned int x ) BOOST_NOEXCEPT
+{
+    return x? __builtin_ctz( x ): std::numeric_limits<unsigned int>::digits;
+}
+
+BOOST_CONSTEXPR inline int countr_impl( unsigned long x ) BOOST_NOEXCEPT
+{
+    return x? __builtin_ctzl( x ): std::numeric_limits<unsigned long>::digits;
+}
+
+BOOST_CONSTEXPR inline int countr_impl( boost::ulong_long_type x ) BOOST_NOEXCEPT
+{
+    return x? __builtin_ctzll( x ): std::numeric_limits<boost::ulong_long_type>::digits;
+}
+
+} // namespace detail
+
+template<class T>
+BOOST_CONSTEXPR int countr_zero( T x ) BOOST_NOEXCEPT
+{
+    return boost::core::detail::countr_impl( x );
+}
+
+#else // defined(__GNUC__) || defined(__clang__)
+
+namespace detail
+{
+
+inline int countr_impl( boost::uint32_t x ) BOOST_NOEXCEPT
+{
+#if defined(_MSC_VER)
+
+    unsigned long r;
+
+    if( _BitScanForward( &r, x ) )
+    {
+        return static_cast<int>( r );
+    }
+    else
+    {
+        return 32;
+    }
+
+#else
+
+    static unsigned char const mod37[ 37 ] = { 32, 0, 1, 26, 2, 23, 27, 0, 3, 16, 24, 30, 28, 11, 0, 13, 4, 7, 17, 0, 25, 22, 31, 15, 29, 10, 12, 6, 0, 21, 14, 9, 5, 20, 8, 19, 18 };
+    return mod37[ ( -(boost::int32_t)x & x ) % 37 ];
+
+#endif
+}
+
+inline int countr_impl( boost::uint64_t x ) BOOST_NOEXCEPT
+{
+#if defined(_MSC_VER) && defined(_M_X64)
+
+    unsigned long r;
+
+    if( _BitScanForward64( &r, x ) )
+    {
+        return static_cast<int>( r );
+    }
+    else
+    {
+        return 64;
+    }
+
+#else
+
+    return static_cast<boost::uint32_t>( x ) != 0?
+        boost::core::detail::countr_impl( static_cast<boost::uint32_t>( x ) ):
+        boost::core::detail::countr_impl( static_cast<boost::uint32_t>( x >> 32 ) ) + 32;
+
+#endif
+}
+
+inline int countr_impl( boost::uint8_t x ) BOOST_NOEXCEPT
+{
+    return boost::core::detail::countr_impl( static_cast<boost::uint32_t>( x ) | 0x100 );
+}
+
+inline int countr_impl( boost::uint16_t x ) BOOST_NOEXCEPT
+{
+    return boost::core::detail::countr_impl( static_cast<boost::uint32_t>( x ) | 0x10000 );
+}
+
+} // namespace detail
+
+template<class T>
+int countr_zero( T x ) BOOST_NOEXCEPT
+{
+    BOOST_STATIC_ASSERT( sizeof(T) == sizeof(boost::uint8_t) || sizeof(T) == sizeof(boost::uint16_t) || sizeof(T) == sizeof(boost::uint32_t) || sizeof(T) == sizeof(boost::uint64_t) );
+
+    if( sizeof(T) == sizeof(boost::uint8_t) )
+    {
+        return boost::core::detail::countr_impl( static_cast<boost::uint8_t>( x ) );
+    }
+    else if( sizeof(T) == sizeof(boost::uint16_t) )
+    {
+        return boost::core::detail::countr_impl( static_cast<boost::uint16_t>( x ) );
+    }
+    else if( sizeof(T) == sizeof(boost::uint32_t) )
+    {
+        return boost::core::detail::countr_impl( static_cast<boost::uint32_t>( x ) );
+    }
+    else
+    {
+        return boost::core::detail::countr_impl( static_cast<boost::uint64_t>( x ) );
+    }
+}
+
+#endif // defined(__GNUC__) || defined(__clang__)
+
+template<class T>
+BOOST_CONSTEXPR int countr_one( T x ) BOOST_NOEXCEPT
+{
+    return boost::core::countr_zero( static_cast<T>( ~x ) );
+}
+
+// popcount
+
+#if defined(__GNUC__) || defined(__clang__)
+
+#if defined(__clang__) && __clang_major__ * 100 + __clang_minor__ < 304
+# define BOOST_CORE_POPCOUNT_CONSTEXPR
+#else
+# define BOOST_CORE_POPCOUNT_CONSTEXPR BOOST_CONSTEXPR
+#endif
+
+namespace detail
+{
+
+BOOST_CORE_POPCOUNT_CONSTEXPR inline int popcount_impl( unsigned char x ) BOOST_NOEXCEPT
+{
+    return __builtin_popcount( x );
+}
+
+BOOST_CORE_POPCOUNT_CONSTEXPR inline int popcount_impl( unsigned short x ) BOOST_NOEXCEPT
+{
+    return __builtin_popcount( x );
+}
+
+BOOST_CORE_POPCOUNT_CONSTEXPR inline int popcount_impl( unsigned int x ) BOOST_NOEXCEPT
+{
+    return __builtin_popcount( x );
+}
+
+BOOST_CORE_POPCOUNT_CONSTEXPR inline int popcount_impl( unsigned long x ) BOOST_NOEXCEPT
+{
+    return __builtin_popcountl( x );
+}
+
+BOOST_CORE_POPCOUNT_CONSTEXPR inline int popcount_impl( boost::ulong_long_type x ) BOOST_NOEXCEPT
+{
+    return __builtin_popcountll( x );
+}
+
+} // namespace detail
+
+#undef BOOST_CORE_POPCOUNT_CONSTEXPR
+
+template<class T>
+BOOST_CONSTEXPR int popcount( T x ) BOOST_NOEXCEPT
+{
+    return boost::core::detail::popcount_impl( x );
+}
+
+#else // defined(__GNUC__) || defined(__clang__)
+
+namespace detail
+{
+
+BOOST_CXX14_CONSTEXPR inline int popcount_impl( boost::uint32_t x ) BOOST_NOEXCEPT
+{
+    x = x - ( ( x >> 1 ) & 0x55555555 );
+    x = ( x & 0x33333333 ) + ( ( x >> 2 ) & 0x33333333 );
+    x = ( x + ( x >> 4 ) ) & 0x0F0F0F0F;
+
+    return static_cast<unsigned>( ( x * 0x01010101 ) >> 24 );
+}
+
+BOOST_CXX14_CONSTEXPR inline int popcount_impl( boost::uint64_t x ) BOOST_NOEXCEPT
+{
+    x = x - ( ( x >> 1 ) & 0x5555555555555555 );
+    x = ( x & 0x3333333333333333 ) + ( ( x >> 2 ) & 0x3333333333333333 );
+    x = ( x + ( x >> 4 ) ) & 0x0F0F0F0F0F0F0F0F;
+
+    return static_cast<unsigned>( ( x * 0x0101010101010101 ) >> 56 );
+}
+
+} // namespace detail
+
+template<class T>
+BOOST_CXX14_CONSTEXPR int popcount( T x ) BOOST_NOEXCEPT
+{
+    BOOST_STATIC_ASSERT( sizeof(T) <= sizeof(boost::uint64_t) );
+
+    if( sizeof(T) <= sizeof(boost::uint32_t) )
+    {
+        return boost::core::detail::popcount_impl( static_cast<boost::uint32_t>( x ) );
+    }
+    else
+    {
+        return boost::core::detail::popcount_impl( static_cast<boost::uint64_t>( x ) );
+    }
+}
+
+#endif // defined(__GNUC__) || defined(__clang__)
+
+// rotating
+
+template<class T>
+BOOST_CXX14_CONSTEXPR T rotl( T x, int s ) BOOST_NOEXCEPT
+{
+    unsigned const mask = std::numeric_limits<T>::digits - 1;
+    return x << (s & mask) | x >> ((-s) & mask);
+}
+
+template<class T>
+BOOST_CXX14_CONSTEXPR T rotr( T x, int s ) BOOST_NOEXCEPT
+{
+    unsigned const mask = std::numeric_limits<T>::digits - 1;
+    return x >> (s & mask) | x << ((-s) & mask);
+}
+
+// integral powers of 2
+
+template<class T>
+BOOST_CONSTEXPR bool has_single_bit( T x ) BOOST_NOEXCEPT
+{
+    return x != 0 && ( x & ( x - 1 ) ) == 0;
+}
+
+// bit_width should return int, https://cplusplus.github.io/LWG/issue3656
+
+template<class T>
+BOOST_CONSTEXPR T bit_width( T x ) BOOST_NOEXCEPT
+{
+    return static_cast<T>(
+        std::numeric_limits<T>::digits - boost::core::countl_zero( x ) );
+}
+
+template<class T>
+BOOST_CONSTEXPR T bit_floor( T x ) BOOST_NOEXCEPT
+{
+    return x == 0? 0: T(1) << ( boost::core::bit_width( x ) - 1 );
+}
+
+namespace detail
+{
+
+BOOST_CXX14_CONSTEXPR inline boost::uint32_t bit_ceil_impl( boost::uint32_t x ) BOOST_NOEXCEPT
+{
+    if( x == 0 )
+    {
+        return 0;
+    }
+
+    --x;
+
+    x |= x >> 1;
+    x |= x >> 2;
+    x |= x >> 4;
+    x |= x >> 8;
+    x |= x >> 16;
+
+    ++x;
+
+    return x;
+}
+
+BOOST_CXX14_CONSTEXPR inline boost::uint64_t bit_ceil_impl( boost::uint64_t x ) BOOST_NOEXCEPT
+{
+    if( x == 0 )
+    {
+        return 0;
+    }
+
+    --x;
+
+    x |= x >> 1;
+    x |= x >> 2;
+    x |= x >> 4;
+    x |= x >> 8;
+    x |= x >> 16;
+    x |= x >> 32;
+
+    ++x;
+
+    return x;
+}
+
+} // namespace detail
+
+template<class T>
+BOOST_CXX14_CONSTEXPR T bit_ceil( T x ) BOOST_NOEXCEPT
+{
+    BOOST_STATIC_ASSERT( sizeof(T) <= sizeof(boost::uint64_t) );
+
+    if( sizeof(T) <= sizeof(boost::uint32_t) )
+    {
+        return static_cast<T>( boost::core::detail::bit_ceil_impl( static_cast<boost::uint32_t>( x ) ) );
+    }
+    else
+    {
+        return static_cast<T>( boost::core::detail::bit_ceil_impl( static_cast<boost::uint64_t>( x ) ) );
+    }
+}
+
+// endian
+
+#if defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+
+# define BOOST_CORE_BIT_NATIVE_INITIALIZER =little
+
+#elif defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
+
+# define BOOST_CORE_BIT_NATIVE_INITIALIZER =big
+
+#elif defined(__BYTE_ORDER__) && defined(__ORDER_PDP_ENDIAN__) && __BYTE_ORDER__ == __ORDER_PDP_ENDIAN__
+
+# define BOOST_CORE_BIT_NATIVE_INITIALIZER
+
+#elif defined(__LITTLE_ENDIAN__)
+
+# define BOOST_CORE_BIT_NATIVE_INITIALIZER =little
+
+#elif defined(__BIG_ENDIAN__)
+
+# define BOOST_CORE_BIT_NATIVE_INITIALIZER =big
+
+#elif defined(_MSC_VER) || defined(__i386__) || defined(__x86_64__)
+
+# define BOOST_CORE_BIT_NATIVE_INITIALIZER =little
+
+#else
+
+# define BOOST_CORE_BIT_NATIVE_INITIALIZER
+
+#endif
+
+#if !defined(BOOST_NO_CXX11_SCOPED_ENUMS)
+
+enum class endian
+{
+    big,
+    little,
+    native BOOST_CORE_BIT_NATIVE_INITIALIZER
+};
+
+typedef endian endian_type;
+
+#else
+
+namespace endian
+{
+
+enum type
+{
+    big,
+    little,
+    native BOOST_CORE_BIT_NATIVE_INITIALIZER
+};
+
+} // namespace endian
+
+typedef endian::type endian_type;
+
+#endif
+
+#undef BOOST_CORE_BIT_NATIVE_INITIALIZER
+
+} // namespace core
+} // namespace boost
+
+#if defined(_MSC_VER)
+# pragma warning(pop)
+#endif
+
+#endif  // #ifndef BOOST_CORE_BIT_HPP_INCLUDED

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/core/checked_delete.hpp

@@ -0,0 +1,71 @@
+#ifndef BOOST_CORE_CHECKED_DELETE_HPP
+#define BOOST_CORE_CHECKED_DELETE_HPP
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+#include <boost/config.hpp>
+
+//
+//  boost/checked_delete.hpp
+//
+//  Copyright (c) 2002, 2003 Peter Dimov
+//  Copyright (c) 2003 Daniel Frey
+//  Copyright (c) 2003 Howard Hinnant
+//
+//  Distributed under the Boost Software License, Version 1.0. (See
+//  accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+//  See http://www.boost.org/libs/core/doc/html/core/checked_delete.html for documentation.
+//
+
+namespace boost
+{
+
+// verify that types are complete for increased safety
+
+template<class T> inline void checked_delete(T * x) BOOST_NOEXCEPT
+{
+    // intentionally complex - simplification causes regressions
+    typedef char type_must_be_complete[ sizeof(T)? 1: -1 ];
+    (void) sizeof(type_must_be_complete);
+    delete x;
+}
+
+template<class T> inline void checked_array_delete(T * x) BOOST_NOEXCEPT
+{
+    typedef char type_must_be_complete[ sizeof(T)? 1: -1 ];
+    (void) sizeof(type_must_be_complete);
+    delete [] x;
+}
+
+template<class T> struct checked_deleter
+{
+    typedef void result_type;
+    typedef T * argument_type;
+
+    void operator()(T * x) const BOOST_NOEXCEPT
+    {
+        // boost:: disables ADL
+        boost::checked_delete(x);
+    }
+};
+
+template<class T> struct checked_array_deleter
+{
+    typedef void result_type;
+    typedef T * argument_type;
+
+    void operator()(T * x) const BOOST_NOEXCEPT
+    {
+        boost::checked_array_delete(x);
+    }
+};
+
+} // namespace boost
+
+#endif  // #ifndef BOOST_CORE_CHECKED_DELETE_HPP

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/core/cmath.hpp

@@ -0,0 +1,298 @@
+#ifndef BOOST_CORE_CMATH_HPP_INCLUDED
+#define BOOST_CORE_CMATH_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+// boost/core/cmath.hpp
+//
+// Floating point classification and sign manipulation functions
+// Extracted from https://github.com/boostorg/lexical_cast/pull/37
+//
+// Copyright 2020, 2021 Peter Dimov
+// Distributed under the Boost Software License, Version 1.0.
+// https://www.boost.org/LICENSE_1_0.txt
+
+#include <cmath>
+
+#if defined(BOOST_CORE_USE_GENERIC_CMATH) || (!defined(_MSC_VER) && !defined(FP_SUBNORMAL))
+
+#include <boost/cstdint.hpp>
+#include <boost/static_assert.hpp>
+#include <limits>
+#include <cstring>
+
+namespace boost
+{
+namespace core
+{
+
+// fpclassify return values
+
+int const fp_zero = 0;
+int const fp_subnormal = 1;
+int const fp_normal = 2;
+int const fp_infinite = 3;
+int const fp_nan = 4;
+
+// Classification functions
+
+template<class T> bool isfinite( T x )
+{
+    return x <= (std::numeric_limits<T>::max)() && x >= -(std::numeric_limits<T>::max)();
+}
+
+template<class T> bool isinf( T x )
+{
+    return x > (std::numeric_limits<T>::max)() || x < -(std::numeric_limits<T>::max)();
+}
+
+template<class T> bool isnan( T x )
+{
+    return !isfinite( x ) && !isinf( x );
+}
+
+template<class T> bool isnormal( T x )
+{
+    return isfinite( x ) && ( x >= (std::numeric_limits<T>::min)() || x <= -(std::numeric_limits<T>::min)() );
+}
+
+template<class T> int fpclassify( T x )
+{
+    if( x == 0 ) return fp_zero;
+
+    if( x < 0 ) x = -x;
+
+    if( x > (std::numeric_limits<T>::max)() ) return fp_infinite;
+
+    if( x >= (std::numeric_limits<T>::min)() ) return fp_normal;
+
+    if( x < (std::numeric_limits<T>::min)() ) return fp_subnormal;
+
+    return fp_nan;
+}
+
+// Sign manipulation functions
+
+inline bool signbit( float x )
+{
+    boost::int32_t y;
+
+    BOOST_STATIC_ASSERT( sizeof( x ) == sizeof( y ) );
+
+    std::memcpy( &y, &x, sizeof( y ) );
+
+    return y < 0;
+}
+
+inline bool signbit( double x )
+{
+    boost::int64_t y;
+
+    BOOST_STATIC_ASSERT( sizeof( x ) == sizeof( y ) );
+
+    std::memcpy( &y, &x, sizeof( y ) );
+
+    return y < 0;
+}
+
+inline bool signbit( long double x )
+{
+    return signbit( static_cast<double>( x ) );
+}
+
+template<class T> T copysign( T x, T y )
+{
+    return signbit( x ) == signbit( y )? x: -x;
+}
+
+} // namespace core
+} // namespace boost
+
+#else // defined(BOOST_CORE_USE_GENERIC_CMATH)
+
+#if defined(_MSC_VER) && _MSC_VER < 1800
+# include <float.h>
+#endif
+
+namespace boost
+{
+namespace core
+{
+#if defined(_MSC_VER) && _MSC_VER < 1800
+
+template<class T> T copysign( T x, T y )
+{
+    return static_cast<T>( _copysign( static_cast<double>( x ), static_cast<double>( y ) ) );
+}
+
+template<class T> bool isnan( T x )
+{
+    return _isnan( static_cast<double>( x ) ) != 0;
+}
+
+template<class T> bool isfinite( T x )
+{
+    return _finite( static_cast<double>( x ) ) != 0;
+}
+
+template<class T> bool isinf( T x )
+{
+    return ( _fpclass( static_cast<double>( x ) ) & ( _FPCLASS_PINF | _FPCLASS_NINF ) ) != 0;
+}
+
+inline bool isnormal( float x )
+{
+    // no _fpclassf in 32 bit mode
+    unsigned y = reinterpret_cast< unsigned const& >( x );
+    unsigned exp = ( y >> 23 ) & 0xFF;
+    return exp != 0 && exp != 0xFF;
+}
+
+inline bool isnormal( double x )
+{
+    return ( _fpclass( x ) & ( _FPCLASS_PN | _FPCLASS_NN ) ) != 0;
+}
+
+inline bool isnormal( long double x )
+{
+    return boost::core::isnormal( static_cast<double>( x ) );
+}
+
+template<class T> bool signbit( T x )
+{
+    return _copysign( 1.0, static_cast<double>( x ) ) < 0.0;
+}
+
+int const fp_zero = 0;
+int const fp_subnormal = 1;
+int const fp_normal = 2;
+int const fp_infinite = 3;
+int const fp_nan = 4;
+
+inline int fpclassify( float x )
+{
+    switch( _fpclass( x ) )
+    {
+    case _FPCLASS_SNAN:
+    case _FPCLASS_QNAN:
+
+        return fp_nan;
+
+    case _FPCLASS_NINF:
+    case _FPCLASS_PINF:
+
+        return fp_infinite;
+
+    case _FPCLASS_NZ:
+    case _FPCLASS_PZ:
+
+        return fp_zero;
+
+    default:
+
+        return boost::core::isnormal( x )? fp_normal: fp_subnormal;
+    }
+}
+
+inline int fpclassify( double x )
+{
+    switch( _fpclass( x ) )
+    {
+    case _FPCLASS_SNAN:
+    case _FPCLASS_QNAN:
+
+        return fp_nan;
+
+    case _FPCLASS_NINF:
+    case _FPCLASS_PINF:
+
+        return fp_infinite;
+
+    case _FPCLASS_NZ:
+    case _FPCLASS_PZ:
+
+        return fp_zero;
+
+    case _FPCLASS_ND:
+    case _FPCLASS_PD:
+
+        return fp_subnormal;
+
+    default:
+
+        return fp_normal;
+    }
+}
+
+inline int fpclassify( long double x )
+{
+    return boost::core::fpclassify( static_cast<double>( x ) );
+}
+
+#else
+
+using std::isfinite;
+using std::isnan;
+using std::isinf;
+using std::isnormal;
+using std::fpclassify;
+
+int const fp_zero = FP_ZERO;
+int const fp_subnormal = FP_SUBNORMAL;
+int const fp_normal = FP_NORMAL;
+int const fp_infinite = FP_INFINITE;
+int const fp_nan = FP_NAN;
+
+using std::signbit;
+
+// std::copysign doesn't exist in libstdc++ under -std=c++03
+
+#if !defined(__GNUC__)
+
+template<class T> T copysign( T x, T y )
+{
+    return std::copysign( x, y );
+}
+
+#else
+
+namespace detail
+{
+
+// ::copysignl is unreliable, use the built-ins
+
+inline float copysign_impl( float x, float y )
+{
+    return __builtin_copysignf( x, y );
+}
+
+inline double copysign_impl( double x, double y )
+{
+    return __builtin_copysign( x, y );
+}
+
+inline long double copysign_impl( long double x, long double y )
+{
+    return __builtin_copysignl( x, y );
+}
+
+} // namespace detail
+
+template<class T> T copysign( T x, T y )
+{
+    return boost::core::detail::copysign_impl( x, y );
+}
+
+#endif // !defined(__GNUC__)
+#endif // #if defined(_MSC_VER) && _MSC_VER < 1800
+
+} // namespace core
+} // namespace boost
+
+#endif // defined(BOOST_CORE_USE_GENERIC_CMATH)
+
+#endif  // #ifndef BOOST_CORE_CMATH_HPP_INCLUDED

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/core/default_allocator.hpp

@@ -0,0 +1,158 @@
+/*
+Copyright 2019 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#ifndef BOOST_CORE_DEFAULT_ALLOCATOR_HPP
+#define BOOST_CORE_DEFAULT_ALLOCATOR_HPP
+
+#include <boost/config.hpp>
+#include <new>
+
+namespace boost {
+
+#if defined(BOOST_NO_EXCEPTIONS)
+BOOST_NORETURN void throw_exception(const std::exception&);
+#endif
+
+namespace default_ {
+
+template<bool V>
+struct bool_constant {
+    typedef bool value_type;
+    typedef bool_constant type;
+
+    static const bool value = V;
+
+    operator bool() const BOOST_NOEXCEPT {
+        return V;
+    }
+
+    bool operator()() const BOOST_NOEXCEPT {
+        return V;
+    }
+};
+
+template<bool V>
+const bool bool_constant<V>::value;
+
+template<class T>
+struct add_reference {
+    typedef T& type;
+};
+
+template<>
+struct add_reference<void> {
+    typedef void type;
+};
+
+template<>
+struct add_reference<const void> {
+    typedef const void type;
+};
+
+template<class T>
+struct default_allocator {
+    typedef T value_type;
+    typedef T* pointer;
+    typedef const T* const_pointer;
+    typedef typename add_reference<T>::type reference;
+    typedef typename add_reference<const T>::type const_reference;
+    typedef std::size_t size_type;
+    typedef std::ptrdiff_t difference_type;
+    typedef bool_constant<true> propagate_on_container_move_assignment;
+    typedef bool_constant<true> is_always_equal;
+
+    template<class U>
+    struct rebind {
+        typedef default_allocator<U> other;
+    };
+
+#if !defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS)
+    default_allocator() = default;
+#else
+    BOOST_CONSTEXPR default_allocator() BOOST_NOEXCEPT { }
+#endif
+
+    template<class U>
+    BOOST_CONSTEXPR default_allocator(const default_allocator<U>&)
+        BOOST_NOEXCEPT { }
+
+    BOOST_CONSTEXPR std::size_t max_size() const BOOST_NOEXCEPT {
+        return static_cast<std::size_t>(-1) / (2 < sizeof(T) ? sizeof(T) : 2);
+    }
+
+#if !defined(BOOST_NO_EXCEPTIONS)
+    T* allocate(std::size_t n) {
+        if (n > max_size()) {
+            throw std::bad_alloc();
+        }
+        return static_cast<T*>(::operator new(sizeof(T) * n));
+    }
+
+    void deallocate(T* p, std::size_t) {
+        ::operator delete(p);
+    }
+#else
+    T* allocate(std::size_t n) {
+        if (n > max_size()) {
+            boost::throw_exception(std::bad_alloc());
+        }
+        void* p = ::operator new(sizeof(T) * n, std::nothrow);
+        if (!p) {
+            boost::throw_exception(std::bad_alloc());
+        }
+        return static_cast<T*>(p);
+    }
+
+    void deallocate(T* p, std::size_t) {
+        ::operator delete(p, std::nothrow);
+    }
+#endif
+
+#if defined(BOOST_NO_CXX11_ALLOCATOR)
+    T* allocate(std::size_t n, const void*) {
+        return allocate(n);
+    }
+#endif
+
+#if (defined(BOOST_LIBSTDCXX_VERSION) && BOOST_LIBSTDCXX_VERSION < 60000) || \
+    defined(BOOST_NO_CXX11_ALLOCATOR)
+    template<class U, class V>
+    void construct(U* p, const V& v) {
+        ::new(p) U(v);
+    }
+
+    template<class U>
+    void destroy(U* p) {
+        p->~U();
+        (void)p;
+    }
+#endif
+};
+
+template<class T, class U>
+BOOST_CONSTEXPR inline bool
+operator==(const default_allocator<T>&,
+    const default_allocator<U>&) BOOST_NOEXCEPT
+{
+    return true;
+}
+
+template<class T, class U>
+BOOST_CONSTEXPR inline bool
+operator!=(const default_allocator<T>&,
+    const default_allocator<U>&) BOOST_NOEXCEPT
+{
+    return false;
+}
+
+} /* default_ */
+
+using default_::default_allocator;
+
+} /* boost */
+
+#endif

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/core/demangle.hpp

@@ -0,0 +1,126 @@
+#ifndef BOOST_CORE_DEMANGLE_HPP_INCLUDED
+#define BOOST_CORE_DEMANGLE_HPP_INCLUDED
+
+// core::demangle
+//
+// Copyright 2014 Peter Dimov
+// Copyright 2014 Andrey Semashev
+//
+// Distributed under the Boost Software License, Version 1.0.
+// See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/config.hpp>
+#include <string>
+
+#if defined(BOOST_HAS_PRAGMA_ONCE)
+# pragma once
+#endif
+
+// __has_include is currently supported by GCC and Clang. However GCC 4.9 may have issues and
+// returns 1 for 'defined( __has_include )', while '__has_include' is actually not supported:
+// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63662
+#if defined( __has_include ) && (!defined( BOOST_GCC ) || (__GNUC__ + 0) >= 5)
+# if __has_include(<cxxabi.h>)
+#  define BOOST_CORE_HAS_CXXABI_H
+# endif
+#elif defined( __GLIBCXX__ ) || defined( __GLIBCPP__ )
+# define BOOST_CORE_HAS_CXXABI_H
+#endif
+
+#if defined( BOOST_CORE_HAS_CXXABI_H )
+# include <cxxabi.h>
+// For some archtectures (mips, mips64, x86, x86_64) cxxabi.h in Android NDK is implemented by gabi++ library
+// (https://android.googlesource.com/platform/ndk/+/master/sources/cxx-stl/gabi++/), which does not implement
+// abi::__cxa_demangle(). We detect this implementation by checking the include guard here.
+# if defined( __GABIXX_CXXABI_H__ )
+#  undef BOOST_CORE_HAS_CXXABI_H
+# else
+#  include <cstdlib>
+#  include <cstddef>
+# endif
+#endif
+
+namespace boost
+{
+
+namespace core
+{
+
+inline char const * demangle_alloc( char const * name ) BOOST_NOEXCEPT;
+inline void demangle_free( char const * name ) BOOST_NOEXCEPT;
+
+class scoped_demangled_name
+{
+private:
+    char const * m_p;
+
+public:
+    explicit scoped_demangled_name( char const * name ) BOOST_NOEXCEPT :
+        m_p( demangle_alloc( name ) )
+    {
+    }
+
+    ~scoped_demangled_name() BOOST_NOEXCEPT
+    {
+        demangle_free( m_p );
+    }
+
+    char const * get() const BOOST_NOEXCEPT
+    {
+        return m_p;
+    }
+
+    BOOST_DELETED_FUNCTION(scoped_demangled_name( scoped_demangled_name const& ))
+    BOOST_DELETED_FUNCTION(scoped_demangled_name& operator= ( scoped_demangled_name const& ))
+};
+
+
+#if defined( BOOST_CORE_HAS_CXXABI_H )
+
+inline char const * demangle_alloc( char const * name ) BOOST_NOEXCEPT
+{
+    int status = 0;
+    std::size_t size = 0;
+    return abi::__cxa_demangle( name, NULL, &size, &status );
+}
+
+inline void demangle_free( char const * name ) BOOST_NOEXCEPT
+{
+    std::free( const_cast< char* >( name ) );
+}
+
+inline std::string demangle( char const * name )
+{
+    scoped_demangled_name demangled_name( name );
+    char const * p = demangled_name.get();
+    if( !p )
+        p = name;
+    return p;
+}
+
+#else
+
+inline char const * demangle_alloc( char const * name ) BOOST_NOEXCEPT
+{
+    return name;
+}
+
+inline void demangle_free( char const * ) BOOST_NOEXCEPT
+{
+}
+
+inline std::string demangle( char const * name )
+{
+    return name;
+}
+
+#endif
+
+} // namespace core
+
+} // namespace boost
+
+#undef BOOST_CORE_HAS_CXXABI_H
+
+#endif // #ifndef BOOST_CORE_DEMANGLE_HPP_INCLUDED

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/core/detail/splitmix64.hpp

@@ -0,0 +1,54 @@
+#ifndef BOOST_CORE_DETAIL_SPLITMIX64_HPP_INCLUDED
+#define BOOST_CORE_DETAIL_SPLITMIX64_HPP_INCLUDED
+
+// Copyright 2020 Peter Dimov
+// Distributed under the Boost Software License, Version 1.0.
+// https://www.boost.org/LICENSE_1_0.txt
+//
+// An implementation of splitmix64 for testing purposes,
+// derived from Sebastiano Vigna's public domain implementation
+// http://xorshift.di.unimi.it/splitmix64.c
+
+#include <boost/cstdint.hpp>
+
+namespace boost
+{
+namespace detail
+{
+
+class splitmix64
+{
+private:
+
+    boost::uint64_t x_;
+
+public:
+
+    splitmix64(): x_( 0 )
+    {
+    }
+
+    explicit splitmix64( boost::uint64_t seed ): x_( seed )
+    {
+    }
+
+    boost::uint64_t operator()()
+    {
+        x_ += ( boost::uint64_t(0x9e3779b9u) << 32 ) + 0x7f4a7c15u;
+
+        boost::uint64_t z = x_;
+
+        z ^= z >> 30;
+        z *= ( boost::uint64_t(0xbf58476du) << 32 ) + 0x1ce4e5b9u;
+        z ^= z >> 27;
+        z *= ( boost::uint64_t(0x94d049bbu) << 32 ) + 0x133111ebu;
+        z ^= z >> 31;
+
+        return z;
+    }
+};
+
+} // namespace detail
+} // namespace boost
+
+#endif // #ifndef BOOST_CORE_DETAIL_SPLITMIX64_HPP_INCLUDED

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/core/empty_value.hpp

@@ -0,0 +1,155 @@
+/*
+Copyright 2018 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#ifndef BOOST_CORE_EMPTY_VALUE_HPP
+#define BOOST_CORE_EMPTY_VALUE_HPP
+
+#include <boost/config.hpp>
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+#include <utility>
+#endif
+
+#if defined(BOOST_GCC_VERSION) && (BOOST_GCC_VERSION >= 40700)
+#define BOOST_DETAIL_EMPTY_VALUE_BASE
+#elif defined(BOOST_INTEL) && defined(_MSC_VER) && (_MSC_VER >= 1800)
+#define BOOST_DETAIL_EMPTY_VALUE_BASE
+#elif defined(BOOST_MSVC) && (BOOST_MSVC >= 1800)
+#define BOOST_DETAIL_EMPTY_VALUE_BASE
+#elif defined(BOOST_CLANG) && !defined(__CUDACC__)
+#if __has_feature(is_empty) && __has_feature(is_final)
+#define BOOST_DETAIL_EMPTY_VALUE_BASE
+#endif
+#endif
+
+#if defined(_MSC_VER)
+#pragma warning(push)
+#pragma warning(disable:4510)
+#endif
+
+namespace boost {
+
+template<class T>
+struct use_empty_value_base {
+    enum {
+#if defined(BOOST_DETAIL_EMPTY_VALUE_BASE)
+        value = __is_empty(T) && !__is_final(T)
+#else
+        value = false
+#endif
+    };
+};
+
+struct empty_init_t { };
+
+namespace empty_ {
+
+template<class T, unsigned N = 0,
+    bool E = boost::use_empty_value_base<T>::value>
+class empty_value {
+public:
+    typedef T type;
+
+#if !defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS)
+    empty_value() = default;
+#else
+    empty_value() { }
+#endif
+
+    empty_value(boost::empty_init_t)
+        : value_() { }
+
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
+    template<class U, class... Args>
+    empty_value(boost::empty_init_t, U&& value, Args&&... args)
+        : value_(std::forward<U>(value), std::forward<Args>(args)...) { }
+#else
+    template<class U>
+    empty_value(boost::empty_init_t, U&& value)
+        : value_(std::forward<U>(value)) { }
+#endif
+#else
+    template<class U>
+    empty_value(boost::empty_init_t, const U& value)
+        : value_(value) { }
+
+    template<class U>
+    empty_value(boost::empty_init_t, U& value)
+        : value_(value) { }
+#endif
+
+    const T& get() const BOOST_NOEXCEPT {
+        return value_;
+    }
+
+    T& get() BOOST_NOEXCEPT {
+        return value_;
+    }
+
+private:
+    T value_;
+};
+
+#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
+template<class T, unsigned N>
+class empty_value<T, N, true>
+    : T {
+public:
+    typedef T type;
+
+#if !defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS)
+    empty_value() = default;
+#else
+    empty_value() { }
+#endif
+
+    empty_value(boost::empty_init_t)
+        : T() { }
+
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
+    template<class U, class... Args>
+    empty_value(boost::empty_init_t, U&& value, Args&&... args)
+        : T(std::forward<U>(value), std::forward<Args>(args)...) { }
+#else
+    template<class U>
+    empty_value(boost::empty_init_t, U&& value)
+        : T(std::forward<U>(value)) { }
+#endif
+#else
+    template<class U>
+    empty_value(boost::empty_init_t, const U& value)
+        : T(value) { }
+
+    template<class U>
+    empty_value(boost::empty_init_t, U& value)
+        : T(value) { }
+#endif
+
+    const T& get() const BOOST_NOEXCEPT {
+        return *this;
+    }
+
+    T& get() BOOST_NOEXCEPT {
+        return *this;
+    }
+};
+#endif
+
+} /* empty_ */
+
+using empty_::empty_value;
+
+BOOST_INLINE_CONSTEXPR empty_init_t empty_init = empty_init_t();
+
+} /* boost */
+
+#if defined(_MSC_VER)
+#pragma warning(pop)
+#endif
+
+#endif

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/core/enable_if.hpp

@@ -0,0 +1,128 @@
+// Boost enable_if library
+
+// Copyright 2003 (c) The Trustees of Indiana University.
+
+// Use, modification, and distribution is subject to the Boost Software
+// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+
+//    Authors: Jaakko Jarvi (jajarvi at osl.iu.edu)
+//             Jeremiah Willcock (jewillco at osl.iu.edu)
+//             Andrew Lumsdaine (lums at osl.iu.edu)
+
+
+#ifndef BOOST_CORE_ENABLE_IF_HPP
+#define BOOST_CORE_ENABLE_IF_HPP
+
+#include "boost/config.hpp"
+
+// Even the definition of enable_if causes problems on some compilers,
+// so it's macroed out for all compilers that do not support SFINAE
+
+#ifndef BOOST_NO_SFINAE
+
+namespace boost
+{
+  template<typename T, typename R=void>
+  struct enable_if_has_type
+  {
+    typedef R type;
+  };
+ 
+  template <bool B, class T = void>
+  struct enable_if_c {
+    typedef T type;
+  };
+
+  template <class T>
+  struct enable_if_c<false, T> {};
+
+  template <class Cond, class T = void> 
+  struct enable_if : public enable_if_c<Cond::value, T> {};
+
+  template <bool B, class T>
+  struct lazy_enable_if_c {
+    typedef typename T::type type;
+  };
+
+  template <class T>
+  struct lazy_enable_if_c<false, T> {};
+
+  template <class Cond, class T> 
+  struct lazy_enable_if : public lazy_enable_if_c<Cond::value, T> {};
+
+
+  template <bool B, class T = void>
+  struct disable_if_c {
+    typedef T type;
+  };
+
+  template <class T>
+  struct disable_if_c<true, T> {};
+
+  template <class Cond, class T = void> 
+  struct disable_if : public disable_if_c<Cond::value, T> {};
+
+  template <bool B, class T>
+  struct lazy_disable_if_c {
+    typedef typename T::type type;
+  };
+
+  template <class T>
+  struct lazy_disable_if_c<true, T> {};
+
+  template <class Cond, class T> 
+  struct lazy_disable_if : public lazy_disable_if_c<Cond::value, T> {};
+
+} // namespace boost
+
+#else
+
+namespace boost {
+
+  namespace detail { typedef void enable_if_default_T; }
+
+  template <typename T>
+  struct enable_if_does_not_work_on_this_compiler;
+
+  template<typename T, typename R=void>
+  struct enable_if_has_type : enable_if_does_not_work_on_this_compiler<T>
+  { };
+
+  template <bool B, class T = detail::enable_if_default_T>
+  struct enable_if_c : enable_if_does_not_work_on_this_compiler<T>
+  { };
+
+  template <bool B, class T = detail::enable_if_default_T> 
+  struct disable_if_c : enable_if_does_not_work_on_this_compiler<T>
+  { };
+
+  template <bool B, class T = detail::enable_if_default_T> 
+  struct lazy_enable_if_c : enable_if_does_not_work_on_this_compiler<T>
+  { };
+
+  template <bool B, class T = detail::enable_if_default_T> 
+  struct lazy_disable_if_c : enable_if_does_not_work_on_this_compiler<T>
+  { };
+
+  template <class Cond, class T = detail::enable_if_default_T> 
+  struct enable_if : enable_if_does_not_work_on_this_compiler<T>
+  { };
+
+  template <class Cond, class T = detail::enable_if_default_T> 
+  struct disable_if : enable_if_does_not_work_on_this_compiler<T>
+  { };
+
+  template <class Cond, class T = detail::enable_if_default_T> 
+  struct lazy_enable_if : enable_if_does_not_work_on_this_compiler<T>
+  { };
+
+  template <class Cond, class T = detail::enable_if_default_T> 
+  struct lazy_disable_if : enable_if_does_not_work_on_this_compiler<T>
+  { };
+
+} // namespace boost
+
+#endif // BOOST_NO_SFINAE
+
+#endif

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/core/exchange.hpp

@@ -0,0 +1,49 @@
+/*
+Copyright 2018 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#ifndef BOOST_CORE_EXCHANGE_HPP
+#define BOOST_CORE_EXCHANGE_HPP
+
+#include <boost/config.hpp>
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+#include <boost/config/workaround.hpp>
+#include <utility>
+#endif
+
+namespace boost {
+
+#if defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+template<class T, class U>
+inline T exchange(T& t, const U& u)
+{
+    T v = t;
+    t = u;
+    return v;
+}
+#else
+#if BOOST_WORKAROUND(BOOST_MSVC, < 1800)
+template<class T, class U>
+inline T exchange(T& t, U&& u)
+{
+    T v = std::move(t);
+    t = std::forward<U>(u);
+    return v;
+}
+#else
+template<class T, class U = T>
+BOOST_CXX14_CONSTEXPR inline T exchange(T& t, U&& u)
+{
+    T v = std::move(t);
+    t = std::forward<U>(u);
+    return v;
+}
+#endif
+#endif
+
+} /* boost */
+
+#endif

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/core/explicit_operator_bool.hpp

@@ -0,0 +1,163 @@
+/*
+ *          Copyright Andrey Semashev 2007 - 2013.
+ * Distributed under the Boost Software License, Version 1.0.
+ *    (See accompanying file LICENSE_1_0.txt or copy at
+ *          http://www.boost.org/LICENSE_1_0.txt)
+ */
+
+/*!
+ * \file   explicit_operator_bool.hpp
+ * \author Andrey Semashev
+ * \date   08.03.2009
+ *
+ * This header defines a compatibility macro that implements an unspecified
+ * \c bool operator idiom, which is superseded with explicit conversion operators in
+ * C++11.
+ */
+
+#ifndef BOOST_CORE_EXPLICIT_OPERATOR_BOOL_HPP
+#define BOOST_CORE_EXPLICIT_OPERATOR_BOOL_HPP
+
+#include <boost/config.hpp>
+#include <boost/config/workaround.hpp>
+
+#ifdef BOOST_HAS_PRAGMA_ONCE
+#pragma once
+#endif
+
+#if !defined(BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS)
+
+/*!
+ * \brief The macro defines an explicit operator of conversion to \c bool
+ *
+ * The macro should be used inside the definition of a class that has to
+ * support the conversion. The class should also implement <tt>operator!</tt>,
+ * in terms of which the conversion operator will be implemented.
+ */
+#define BOOST_EXPLICIT_OPERATOR_BOOL()\
+    BOOST_FORCEINLINE explicit operator bool () const\
+    {\
+        return !this->operator! ();\
+    }
+
+/*!
+ * \brief The macro defines a noexcept explicit operator of conversion to \c bool
+ *
+ * The macro should be used inside the definition of a class that has to
+ * support the conversion. The class should also implement <tt>operator!</tt>,
+ * in terms of which the conversion operator will be implemented.
+ */
+#define BOOST_EXPLICIT_OPERATOR_BOOL_NOEXCEPT()\
+    BOOST_FORCEINLINE explicit operator bool () const BOOST_NOEXCEPT\
+    {\
+        return !this->operator! ();\
+    }
+
+#if !BOOST_WORKAROUND(BOOST_GCC, < 40700)
+
+/*!
+ * \brief The macro defines a constexpr explicit operator of conversion to \c bool
+ *
+ * The macro should be used inside the definition of a class that has to
+ * support the conversion. The class should also implement <tt>operator!</tt>,
+ * in terms of which the conversion operator will be implemented.
+ */
+#define BOOST_CONSTEXPR_EXPLICIT_OPERATOR_BOOL()\
+    BOOST_FORCEINLINE BOOST_CONSTEXPR explicit operator bool () const BOOST_NOEXCEPT\
+    {\
+        return !this->operator! ();\
+    }
+
+#else
+
+#define BOOST_CONSTEXPR_EXPLICIT_OPERATOR_BOOL() BOOST_EXPLICIT_OPERATOR_BOOL_NOEXCEPT()
+
+#endif
+
+#else // !defined(BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS)
+
+#if (defined(__SUNPRO_CC) && (__SUNPRO_CC <= 0x530)) && !defined(BOOST_NO_COMPILER_CONFIG)
+// Sun C++ 5.3 can't handle the safe_bool idiom, so don't use it
+#define BOOST_NO_UNSPECIFIED_BOOL
+#endif // (defined(__SUNPRO_CC) && (__SUNPRO_CC <= 0x530)) && !defined(BOOST_NO_COMPILER_CONFIG)
+
+#if !defined(BOOST_NO_UNSPECIFIED_BOOL)
+
+namespace boost {
+
+namespace detail {
+
+#if !defined(_MSC_VER) && !defined(__IBMCPP__)
+
+    struct unspecified_bool
+    {
+        // NOTE TO THE USER: If you see this in error messages then you tried
+        // to apply an unsupported operator on the object that supports
+        // explicit conversion to bool.
+        struct OPERATORS_NOT_ALLOWED;
+        static void true_value(OPERATORS_NOT_ALLOWED*) {}
+    };
+    typedef void (*unspecified_bool_type)(unspecified_bool::OPERATORS_NOT_ALLOWED*);
+
+#else
+
+    // MSVC and VACPP are too eager to convert pointer to function to void* even though they shouldn't
+    struct unspecified_bool
+    {
+        // NOTE TO THE USER: If you see this in error messages then you tried
+        // to apply an unsupported operator on the object that supports
+        // explicit conversion to bool.
+        struct OPERATORS_NOT_ALLOWED;
+        void true_value(OPERATORS_NOT_ALLOWED*) {}
+    };
+    typedef void (unspecified_bool::*unspecified_bool_type)(unspecified_bool::OPERATORS_NOT_ALLOWED*);
+
+#endif
+
+} // namespace detail
+
+} // namespace boost
+
+#define BOOST_EXPLICIT_OPERATOR_BOOL()\
+    BOOST_FORCEINLINE operator boost::detail::unspecified_bool_type () const\
+    {\
+        return (!this->operator! () ? &boost::detail::unspecified_bool::true_value : (boost::detail::unspecified_bool_type)0);\
+    }
+
+#define BOOST_EXPLICIT_OPERATOR_BOOL_NOEXCEPT()\
+    BOOST_FORCEINLINE operator boost::detail::unspecified_bool_type () const BOOST_NOEXCEPT\
+    {\
+        return (!this->operator! () ? &boost::detail::unspecified_bool::true_value : (boost::detail::unspecified_bool_type)0);\
+    }
+
+#define BOOST_CONSTEXPR_EXPLICIT_OPERATOR_BOOL()\
+    BOOST_FORCEINLINE BOOST_CONSTEXPR operator boost::detail::unspecified_bool_type () const BOOST_NOEXCEPT\
+    {\
+        return (!this->operator! () ? &boost::detail::unspecified_bool::true_value : (boost::detail::unspecified_bool_type)0);\
+    }
+
+#else // !defined(BOOST_NO_UNSPECIFIED_BOOL)
+
+#define BOOST_EXPLICIT_OPERATOR_BOOL()\
+    BOOST_FORCEINLINE operator bool () const\
+    {\
+        return !this->operator! ();\
+    }
+
+#define BOOST_EXPLICIT_OPERATOR_BOOL_NOEXCEPT()\
+    BOOST_FORCEINLINE operator bool () const BOOST_NOEXCEPT\
+    {\
+        return !this->operator! ();\
+    }
+
+#define BOOST_CONSTEXPR_EXPLICIT_OPERATOR_BOOL()\
+    BOOST_FORCEINLINE BOOST_CONSTEXPR operator bool () const BOOST_NOEXCEPT\
+    {\
+        return !this->operator! ();\
+    }
+
+#endif // !defined(BOOST_NO_UNSPECIFIED_BOOL)
+
+#endif // !defined(BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS)
+
+#endif // BOOST_CORE_EXPLICIT_OPERATOR_BOOL_HPP

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/core/first_scalar.hpp

@@ -0,0 +1,45 @@
+/*
+Copyright 2019 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#ifndef BOOST_CORE_FIRST_SCALAR_HPP
+#define BOOST_CORE_FIRST_SCALAR_HPP
+
+#include <boost/config.hpp>
+#include <cstddef>
+
+namespace boost {
+namespace detail {
+
+template<class T>
+struct make_scalar {
+    typedef T type;
+};
+
+template<class T, std::size_t N>
+struct make_scalar<T[N]> {
+    typedef typename make_scalar<T>::type type;
+};
+
+} /* detail */
+
+template<class T>
+BOOST_CONSTEXPR inline T*
+first_scalar(T* p) BOOST_NOEXCEPT
+{
+    return p;
+}
+
+template<class T, std::size_t N>
+BOOST_CONSTEXPR inline typename detail::make_scalar<T>::type*
+first_scalar(T (*p)[N]) BOOST_NOEXCEPT
+{
+    return boost::first_scalar(&(*p)[0]);
+}
+
+} /* boost */
+
+#endif

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/core/ignore_unused.hpp

@@ -0,0 +1,100 @@
+// Copyright (c) 2014 Adam Wulkiewicz, Lodz, Poland.
+//
+// Use, modification and distribution is subject to the Boost Software License,
+// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_CORE_IGNORE_UNUSED_HPP
+#define BOOST_CORE_IGNORE_UNUSED_HPP
+
+#include <boost/config.hpp>
+
+namespace boost {
+
+#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
+
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+
+template <typename... Ts>
+BOOST_FORCEINLINE BOOST_CXX14_CONSTEXPR void ignore_unused(Ts&& ...)
+{}
+
+#else
+
+template <typename... Ts>
+BOOST_FORCEINLINE BOOST_CXX14_CONSTEXPR void ignore_unused(Ts const& ...)
+{}
+
+#endif
+
+template <typename... Ts>
+BOOST_FORCEINLINE BOOST_CXX14_CONSTEXPR void ignore_unused()
+{}
+
+#else // !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
+
+template <typename T1>
+BOOST_FORCEINLINE BOOST_CXX14_CONSTEXPR void ignore_unused(T1&)
+{}
+
+template <typename T1>
+BOOST_FORCEINLINE BOOST_CXX14_CONSTEXPR void ignore_unused(T1 const&)
+{}
+
+template <typename T1, typename T2>
+BOOST_FORCEINLINE BOOST_CXX14_CONSTEXPR void ignore_unused(T1&, T2&)
+{}
+
+template <typename T1, typename T2>
+BOOST_FORCEINLINE BOOST_CXX14_CONSTEXPR void ignore_unused(T1 const&, T2 const&)
+{}
+
+template <typename T1, typename T2, typename T3>
+BOOST_FORCEINLINE BOOST_CXX14_CONSTEXPR void ignore_unused(T1&, T2&, T3&)
+{}
+
+template <typename T1, typename T2, typename T3>
+BOOST_FORCEINLINE BOOST_CXX14_CONSTEXPR void ignore_unused(T1 const&, T2 const&, T3 const&)
+{}
+
+template <typename T1, typename T2, typename T3, typename T4>
+BOOST_FORCEINLINE BOOST_CXX14_CONSTEXPR void ignore_unused(T1&, T2&, T3&, T4&)
+{}
+
+template <typename T1, typename T2, typename T3, typename T4>
+BOOST_FORCEINLINE BOOST_CXX14_CONSTEXPR void ignore_unused(T1 const&, T2 const&, T3 const&, T4 const&)
+{}
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5>
+BOOST_FORCEINLINE BOOST_CXX14_CONSTEXPR void ignore_unused(T1&, T2&, T3&, T4&, T5&)
+{}
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5>
+BOOST_FORCEINLINE BOOST_CXX14_CONSTEXPR void ignore_unused(T1 const&, T2 const&, T3 const&, T4 const&, T5 const&)
+{}
+
+template <typename T1>
+BOOST_FORCEINLINE BOOST_CXX14_CONSTEXPR void ignore_unused()
+{}
+
+template <typename T1, typename T2>
+BOOST_FORCEINLINE BOOST_CXX14_CONSTEXPR void ignore_unused()
+{}
+
+template <typename T1, typename T2, typename T3>
+BOOST_FORCEINLINE BOOST_CXX14_CONSTEXPR void ignore_unused()
+{}
+
+template <typename T1, typename T2, typename T3, typename T4>
+BOOST_FORCEINLINE BOOST_CXX14_CONSTEXPR void ignore_unused()
+{}
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5>
+BOOST_FORCEINLINE BOOST_CXX14_CONSTEXPR void ignore_unused()
+{}
+
+#endif
+
+} // namespace boost
+
+#endif // BOOST_CORE_IGNORE_UNUSED_HPP

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/core/is_same.hpp

@@ -0,0 +1,40 @@
+#ifndef BOOST_CORE_IS_SAME_HPP_INCLUDED
+#define BOOST_CORE_IS_SAME_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+// is_same<T1,T2>::value is true when T1 == T2
+//
+// Copyright 2014 Peter Dimov
+//
+// Distributed under the Boost Software License, Version 1.0.
+// See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/config.hpp>
+
+namespace boost
+{
+
+namespace core
+{
+
+template< class T1, class T2 > struct is_same
+{
+    BOOST_STATIC_CONSTANT( bool, value = false );
+};
+
+template< class T > struct is_same< T, T >
+{
+    BOOST_STATIC_CONSTANT( bool, value = true );
+};
+
+} // namespace core
+
+} // namespace boost
+
+#endif // #ifndef BOOST_CORE_IS_SAME_HPP_INCLUDED

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/core/lightweight_test.hpp

@@ -0,0 +1,591 @@
+#ifndef BOOST_CORE_LIGHTWEIGHT_TEST_HPP
+#define BOOST_CORE_LIGHTWEIGHT_TEST_HPP
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER)
+# pragma once
+#endif
+
+//
+//  boost/core/lightweight_test.hpp - lightweight test library
+//
+//  Copyright (c) 2002, 2009, 2014 Peter Dimov
+//  Copyright (2) Beman Dawes 2010, 2011
+//  Copyright (3) Ion Gaztanaga 2013
+//
+//  Copyright 2018 Glen Joseph Fernandes
+//  (glenjofe@gmail.com)
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt
+//
+
+#include <boost/current_function.hpp>
+#include <boost/config.hpp>
+#include <exception>
+#include <iostream>
+#include <iterator>
+#include <string>
+#include <cstdlib>
+#include <cstring>
+#include <cstddef>
+#include <cctype>
+#include <cstdio>
+
+#if defined(_MSC_VER) && defined(_CPPLIB_VER) && defined(_DEBUG)
+# include <crtdbg.h>
+#endif
+
+//  IDE's like Visual Studio perform better if output goes to std::cout or
+//  some other stream, so allow user to configure output stream:
+#ifndef BOOST_LIGHTWEIGHT_TEST_OSTREAM
+# define BOOST_LIGHTWEIGHT_TEST_OSTREAM std::cerr
+#endif
+
+namespace boost
+{
+
+namespace detail
+{
+
+class test_result {
+public:
+    test_result()
+        : report_(false)
+        , errors_(0) {
+#if defined(_MSC_VER) && (_MSC_VER > 1310)
+        // disable message boxes on assert(), abort()
+        ::_set_abort_behavior(0, _WRITE_ABORT_MSG | _CALL_REPORTFAULT);
+#endif
+#if defined(_MSC_VER) && defined(_CPPLIB_VER) && defined(_DEBUG)
+        // disable message boxes on iterator debugging violations
+        _CrtSetReportMode( _CRT_ASSERT, _CRTDBG_MODE_FILE );
+        _CrtSetReportFile( _CRT_ASSERT, _CRTDBG_FILE_STDERR );
+#endif
+    }
+
+    ~test_result() {
+        if (!report_) {
+            BOOST_LIGHTWEIGHT_TEST_OSTREAM << "main() should return report_errors()" << std::endl;
+            std::abort();
+        }
+    }
+
+    int& errors() {
+        return errors_;
+    }
+
+    void done() {
+        report_ = true;
+    }
+
+private:
+    bool report_;
+    int errors_;
+};
+
+inline test_result& test_results()
+{
+    static test_result instance;
+    return instance;
+}
+
+inline int& test_errors()
+{
+    return test_results().errors();
+}
+
+inline bool test_impl(char const * expr, char const * file, int line, char const * function, bool v)
+{
+    if( v )
+    {
+        test_results();
+        return true;
+    }
+    else
+    {
+        BOOST_LIGHTWEIGHT_TEST_OSTREAM
+          << file << "(" << line << "): test '" << expr << "' failed in function '"
+          << function << "'" << std::endl;
+        ++test_results().errors();
+        return false;
+    }
+}
+
+inline void error_impl(char const * msg, char const * file, int line, char const * function)
+{
+    BOOST_LIGHTWEIGHT_TEST_OSTREAM
+      << file << "(" << line << "): " << msg << " in function '"
+      << function << "'" << std::endl;
+    ++test_results().errors();
+}
+
+inline void throw_failed_impl(const char* expr, char const * excep, char const * file, int line, char const * function)
+{
+   BOOST_LIGHTWEIGHT_TEST_OSTREAM
+    << file << "(" << line << "): expression '" << expr << "' did not throw exception '" << excep << "' in function '"
+    << function << "'" << std::endl;
+   ++test_results().errors();
+}
+
+inline void no_throw_failed_impl(const char* expr, const char* file, int line, const char* function)
+{
+    BOOST_LIGHTWEIGHT_TEST_OSTREAM
+        << file << "(" << line << "): expression '" << expr << "' threw an exception in function '"
+        << function << "'" << std::endl;
+   ++test_results().errors();
+}
+
+inline void no_throw_failed_impl(const char* expr, const char* what, const char* file, int line, const char* function)
+{
+    BOOST_LIGHTWEIGHT_TEST_OSTREAM
+        << file << "(" << line << "): expression '" << expr << "' threw an exception in function '"
+        << function << "': " << what << std::endl;
+   ++test_results().errors();
+}
+
+// In the comparisons below, it is possible that T and U are signed and unsigned integer types, which generates warnings in some compilers.
+// A cleaner fix would require common_type trait or some meta-programming, which would introduce a dependency on Boost.TypeTraits. To avoid
+// the dependency we just disable the warnings.
+#if defined(__clang__) && defined(__has_warning)
+# if __has_warning("-Wsign-compare")
+#  pragma clang diagnostic push
+#  pragma clang diagnostic ignored "-Wsign-compare"
+# endif
+#elif defined(_MSC_VER)
+# pragma warning(push)
+# pragma warning(disable: 4389)
+#elif defined(__GNUC__) && !(defined(__INTEL_COMPILER) || defined(__ICL) || defined(__ICC) || defined(__ECC)) && (__GNUC__ * 100 + __GNUC_MINOR__) >= 406
+# pragma GCC diagnostic push
+# pragma GCC diagnostic ignored "-Wsign-compare"
+#endif
+
+// specialize test output for char pointers to avoid printing as cstring
+template <class T> inline const T& test_output_impl(const T& v) { return v; }
+inline const void* test_output_impl(const char* v) { return v; }
+inline const void* test_output_impl(const unsigned char* v) { return v; }
+inline const void* test_output_impl(const signed char* v) { return v; }
+inline const void* test_output_impl(char* v) { return v; }
+inline const void* test_output_impl(unsigned char* v) { return v; }
+inline const void* test_output_impl(signed char* v) { return v; }
+template<class T> inline const void* test_output_impl(T volatile* v) { return const_cast<T*>(v); }
+
+#if !defined( BOOST_NO_CXX11_NULLPTR )
+inline const void* test_output_impl(std::nullptr_t) { return nullptr; }
+#endif
+
+// print chars as numeric
+
+inline int test_output_impl( signed char const& v ) { return v; }
+inline unsigned test_output_impl( unsigned char const& v ) { return v; }
+
+// Whether wchar_t is signed is implementation-defined
+
+template<bool Signed> struct lwt_long_type {};
+template<> struct lwt_long_type<true> { typedef long type; };
+template<> struct lwt_long_type<false> { typedef unsigned long type; };
+
+inline lwt_long_type<(static_cast<wchar_t>(-1) < static_cast<wchar_t>(0))>::type test_output_impl( wchar_t const& v ) { return v; }
+
+#if !defined( BOOST_NO_CXX11_CHAR16_T )
+inline unsigned long test_output_impl( char16_t const& v ) { return v; }
+#endif
+
+#if !defined( BOOST_NO_CXX11_CHAR32_T )
+inline unsigned long test_output_impl( char32_t const& v ) { return v; }
+#endif
+
+#if defined(_MSC_VER)
+#pragma warning(push)
+#pragma warning(disable: 4996)
+#endif
+
+inline std::string test_output_impl( char const& v )
+{
+    if( std::isprint( static_cast<unsigned char>( v ) ) )
+    {
+        return std::string( 1, v );
+    }
+    else
+    {
+        char buffer[ 8 ];
+        std::sprintf( buffer, "\\x%02X", static_cast<unsigned char>( v ) );
+
+        return buffer;
+    }
+}
+
+#if defined(_MSC_VER)
+#pragma warning(pop)
+#endif
+
+// predicates
+
+struct lw_test_eq
+{
+    template <typename T, typename U>
+    bool operator()(const T& t, const U& u) const { return t == u; }
+};
+
+struct lw_test_ne
+{
+    template <typename T, typename U>
+    bool operator()(const T& t, const U& u) const { return t != u; }
+};
+
+struct lw_test_lt
+{
+    template <typename T, typename U>
+    bool operator()(const T& t, const U& u) const { return t < u; }
+};
+
+struct lw_test_le
+{
+    template <typename T, typename U>
+    bool operator()(const T& t, const U& u) const { return t <= u; }
+};
+
+struct lw_test_gt
+{
+    template <typename T, typename U>
+    bool operator()(const T& t, const U& u) const { return t > u; }
+};
+
+struct lw_test_ge
+{
+    template <typename T, typename U>
+    bool operator()(const T& t, const U& u) const { return t >= u; }
+};
+
+// lwt_predicate_name
+
+template<class T> char const * lwt_predicate_name( T const& )
+{
+    return "~=";
+}
+
+inline char const * lwt_predicate_name( lw_test_eq const& )
+{
+    return "==";
+}
+
+inline char const * lwt_predicate_name( lw_test_ne const& )
+{
+    return "!=";
+}
+
+inline char const * lwt_predicate_name( lw_test_lt const& )
+{
+    return "<";
+}
+
+inline char const * lwt_predicate_name( lw_test_le const& )
+{
+    return "<=";
+}
+
+inline char const * lwt_predicate_name( lw_test_gt const& )
+{
+    return ">";
+}
+
+inline char const * lwt_predicate_name( lw_test_ge const& )
+{
+    return ">=";
+}
+
+//
+
+template<class BinaryPredicate, class T, class U>
+inline bool test_with_impl(BinaryPredicate pred, char const * expr1, char const * expr2,
+                           char const * file, int line, char const * function,
+                           T const & t, U const & u)
+{
+    if( pred(t, u) )
+    {
+        test_results();
+        return true;
+    }
+    else
+    {
+        BOOST_LIGHTWEIGHT_TEST_OSTREAM
+            << file << "(" << line << "): test '" << expr1 << " " << lwt_predicate_name(pred) << " " << expr2
+            << "' ('" << test_output_impl(t) << "' " << lwt_predicate_name(pred) << " '" << test_output_impl(u)
+            << "') failed in function '" << function << "'" << std::endl;
+        ++test_results().errors();
+        return false;
+    }
+}
+
+inline bool test_cstr_eq_impl( char const * expr1, char const * expr2,
+  char const * file, int line, char const * function, char const * const t, char const * const u )
+{
+    if( std::strcmp(t, u) == 0 )
+    {
+        test_results();
+        return true;
+    }
+    else
+    {
+        BOOST_LIGHTWEIGHT_TEST_OSTREAM
+            << file << "(" << line << "): test '" << expr1 << " == " << expr2 << "' ('" << t
+            << "' == '" << u << "') failed in function '" << function << "'" << std::endl;
+        ++test_results().errors();
+        return false;
+    }
+}
+
+inline bool test_cstr_ne_impl( char const * expr1, char const * expr2,
+  char const * file, int line, char const * function, char const * const t, char const * const u )
+{
+    if( std::strcmp(t, u) != 0 )
+    {
+        test_results();
+        return true;
+    }
+    else
+    {
+        BOOST_LIGHTWEIGHT_TEST_OSTREAM
+            << file << "(" << line << "): test '" << expr1 << " != " << expr2 << "' ('" << t
+            << "' != '" << u << "') failed in function '" << function << "'" << std::endl;
+        ++test_results().errors();
+        return false;
+    }
+}
+
+template<class FormattedOutputFunction, class InputIterator1, class InputIterator2>
+bool test_all_eq_impl(FormattedOutputFunction& output,
+                      char const * file, int line, char const * function,
+                      InputIterator1 first_begin, InputIterator1 first_end,
+                      InputIterator2 second_begin, InputIterator2 second_end)
+{
+    InputIterator1 first_it = first_begin;
+    InputIterator2 second_it = second_begin;
+    typename std::iterator_traits<InputIterator1>::difference_type first_index = 0;
+    typename std::iterator_traits<InputIterator2>::difference_type second_index = 0;
+    std::size_t error_count = 0;
+    const std::size_t max_count = 8;
+    do
+    {
+        while ((first_it != first_end) && (second_it != second_end) && (*first_it == *second_it))
+        {
+            ++first_it;
+            ++second_it;
+            ++first_index;
+            ++second_index;
+        }
+        if ((first_it == first_end) || (second_it == second_end))
+        {
+            break; // do-while
+        }
+        if (error_count == 0)
+        {
+            output << file << "(" << line << "): Container contents differ in function '" << function << "':";
+        }
+        else if (error_count >= max_count)
+        {
+            output << " ...";
+            break;
+        }
+        output << " [" << first_index << "] '" << test_output_impl(*first_it) << "' != '" << test_output_impl(*second_it) << "'";
+        ++first_it;
+        ++second_it;
+        ++first_index;
+        ++second_index;
+        ++error_count;
+    } while (first_it != first_end);
+
+    first_index += std::distance(first_it, first_end);
+    second_index += std::distance(second_it, second_end);
+    if (first_index != second_index)
+    {
+        if (error_count == 0)
+        {
+            output << file << "(" << line << "): Container sizes differ in function '" << function << "': size(" << first_index << ") != size(" << second_index << ")";
+        }
+        else
+        {
+            output << " [*] size(" << first_index << ") != size(" << second_index << ")";
+        }
+        ++error_count;
+    }
+
+    if (error_count == 0)
+    {
+        test_results();
+        return true;
+    }
+    else
+    {
+        output << std::endl;
+        ++test_results().errors();
+        return false;
+    }
+}
+
+template<class FormattedOutputFunction, class InputIterator1, class InputIterator2, typename BinaryPredicate>
+bool test_all_with_impl(FormattedOutputFunction& output,
+                        char const * file, int line, char const * function,
+                        InputIterator1 first_begin, InputIterator1 first_end,
+                        InputIterator2 second_begin, InputIterator2 second_end,
+                        BinaryPredicate predicate)
+{
+    InputIterator1 first_it = first_begin;
+    InputIterator2 second_it = second_begin;
+    typename std::iterator_traits<InputIterator1>::difference_type first_index = 0;
+    typename std::iterator_traits<InputIterator2>::difference_type second_index = 0;
+    std::size_t error_count = 0;
+    const std::size_t max_count = 8;
+    do
+    {
+        while ((first_it != first_end) && (second_it != second_end) && predicate(*first_it, *second_it))
+        {
+            ++first_it;
+            ++second_it;
+            ++first_index;
+            ++second_index;
+        }
+        if ((first_it == first_end) || (second_it == second_end))
+        {
+            break; // do-while
+        }
+        if (error_count == 0)
+        {
+            output << file << "(" << line << "): Container contents differ in function '" << function << "':";
+        }
+        else if (error_count >= max_count)
+        {
+            output << " ...";
+            break;
+        }
+        output << " [" << first_index << "]";
+        ++first_it;
+        ++second_it;
+        ++first_index;
+        ++second_index;
+        ++error_count;
+    } while (first_it != first_end);
+
+    first_index += std::distance(first_it, first_end);
+    second_index += std::distance(second_it, second_end);
+    if (first_index != second_index)
+    {
+        if (error_count == 0)
+        {
+            output << file << "(" << line << "): Container sizes differ in function '" << function << "': size(" << first_index << ") != size(" << second_index << ")";
+        }
+        else
+        {
+            output << " [*] size(" << first_index << ") != size(" << second_index << ")";
+        }
+        ++error_count;
+    }
+
+    if (error_count == 0)
+    {
+        test_results();
+        return true;
+    }
+    else
+    {
+        output << std::endl;
+        ++test_results().errors();
+        return false;
+    }
+}
+
+#if defined(__clang__) && defined(__has_warning)
+# if __has_warning("-Wsign-compare")
+#  pragma clang diagnostic pop
+# endif
+#elif defined(_MSC_VER)
+# pragma warning(pop)
+#elif defined(__GNUC__) && !(defined(__INTEL_COMPILER) || defined(__ICL) || defined(__ICC) || defined(__ECC)) && (__GNUC__ * 100 + __GNUC_MINOR__) >= 406
+# pragma GCC diagnostic pop
+#endif
+
+} // namespace detail
+
+inline int report_errors()
+{
+    boost::detail::test_result& result = boost::detail::test_results();
+    result.done();
+
+    int errors = result.errors();
+
+    if( errors == 0 )
+    {
+        BOOST_LIGHTWEIGHT_TEST_OSTREAM
+          << "No errors detected." << std::endl;
+    }
+    else
+    {
+        BOOST_LIGHTWEIGHT_TEST_OSTREAM
+          << errors << " error" << (errors == 1? "": "s") << " detected." << std::endl;
+    }
+
+    // `return report_errors();` from main only supports 8 bit exit codes
+    return errors < 256? errors: 255;
+}
+
+} // namespace boost
+
+#define BOOST_TEST(expr) ( ::boost::detail::test_impl(#expr, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, (expr)? true: false) )
+#define BOOST_TEST_NOT(expr) BOOST_TEST(!(expr))
+
+#define BOOST_ERROR(msg) ( ::boost::detail::error_impl(msg, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION) )
+
+#define BOOST_TEST_WITH(expr1,expr2,predicate) ( ::boost::detail::test_with_impl(predicate, #expr1, #expr2, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, expr1, expr2) )
+
+#define BOOST_TEST_EQ(expr1,expr2) ( ::boost::detail::test_with_impl(::boost::detail::lw_test_eq(), #expr1, #expr2, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, expr1, expr2) )
+#define BOOST_TEST_NE(expr1,expr2) ( ::boost::detail::test_with_impl(::boost::detail::lw_test_ne(), #expr1, #expr2, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, expr1, expr2) )
+
+#define BOOST_TEST_LT(expr1,expr2) ( ::boost::detail::test_with_impl(::boost::detail::lw_test_lt(), #expr1, #expr2, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, expr1, expr2) )
+#define BOOST_TEST_LE(expr1,expr2) ( ::boost::detail::test_with_impl(::boost::detail::lw_test_le(), #expr1, #expr2, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, expr1, expr2) )
+#define BOOST_TEST_GT(expr1,expr2) ( ::boost::detail::test_with_impl(::boost::detail::lw_test_gt(), #expr1, #expr2, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, expr1, expr2) )
+#define BOOST_TEST_GE(expr1,expr2) ( ::boost::detail::test_with_impl(::boost::detail::lw_test_ge(), #expr1, #expr2, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, expr1, expr2) )
+
+#define BOOST_TEST_CSTR_EQ(expr1,expr2) ( ::boost::detail::test_cstr_eq_impl(#expr1, #expr2, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, expr1, expr2) )
+#define BOOST_TEST_CSTR_NE(expr1,expr2) ( ::boost::detail::test_cstr_ne_impl(#expr1, #expr2, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, expr1, expr2) )
+
+#define BOOST_TEST_ALL_EQ(begin1, end1, begin2, end2) ( ::boost::detail::test_all_eq_impl(BOOST_LIGHTWEIGHT_TEST_OSTREAM, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, begin1, end1, begin2, end2) )
+#define BOOST_TEST_ALL_WITH(begin1, end1, begin2, end2, predicate) ( ::boost::detail::test_all_with_impl(BOOST_LIGHTWEIGHT_TEST_OSTREAM, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, begin1, end1, begin2, end2, predicate) )
+
+#ifndef BOOST_NO_EXCEPTIONS
+   #define BOOST_TEST_THROWS( EXPR, EXCEP )                           \
+      try {                                                           \
+         EXPR;                                                        \
+         ::boost::detail::throw_failed_impl                           \
+         (#EXPR, #EXCEP, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION); \
+      }                                                               \
+      catch(EXCEP const&) {                                           \
+         ::boost::detail::test_results();                             \
+      }                                                               \
+      catch(...) {                                                    \
+         ::boost::detail::throw_failed_impl                           \
+         (#EXPR, #EXCEP, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION); \
+      }                                                               \
+   //
+#else
+   #define BOOST_TEST_THROWS( EXPR, EXCEP )
+#endif
+
+#ifndef BOOST_NO_EXCEPTIONS
+#  define BOOST_TEST_NO_THROW(EXPR)                                    \
+    try {                                                              \
+        EXPR;                                                          \
+    } catch (const std::exception& e) {                                \
+        ::boost::detail::no_throw_failed_impl                          \
+        (#EXPR, e.what(), __FILE__, __LINE__, BOOST_CURRENT_FUNCTION); \
+    } catch (...) {                                                    \
+        ::boost::detail::no_throw_failed_impl                          \
+        (#EXPR, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION);           \
+    }
+    //
+#else
+#  define BOOST_TEST_NO_THROW(EXPR) { EXPR; }
+#endif
+
+#endif // #ifndef BOOST_CORE_LIGHTWEIGHT_TEST_HPP

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/core/lightweight_test_trait.hpp

@@ -0,0 +1,91 @@
+#ifndef BOOST_CORE_LIGHTWEIGHT_TEST_TRAIT_HPP
+#define BOOST_CORE_LIGHTWEIGHT_TEST_TRAIT_HPP
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER)
+# pragma once
+#endif
+
+// boost/core/lightweight_test_trait.hpp
+//
+// BOOST_TEST_TRAIT_TRUE, BOOST_TEST_TRAIT_FALSE, BOOST_TEST_TRAIT_SAME
+//
+// Copyright 2014, 2021 Peter Dimov
+//
+// Copyright 2019 Glen Joseph Fernandes
+// (glenjofe@gmail.com)
+//
+// Distributed under the Boost Software License, Version 1.0.
+// See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/core/lightweight_test.hpp>
+#include <boost/core/type_name.hpp>
+#include <boost/core/is_same.hpp>
+#include <boost/config.hpp>
+
+namespace boost
+{
+namespace detail
+{
+
+template< class T > inline void test_trait_impl( char const * trait, void (*)( T ),
+  bool expected, char const * file, int line, char const * function )
+{
+    if( T::value == expected )
+    {
+        test_results();
+    }
+    else
+    {
+        BOOST_LIGHTWEIGHT_TEST_OSTREAM
+            << file << "(" << line << "): predicate '" << trait << "' ["
+            << boost::core::type_name<T>() << "]"
+            << " test failed in function '" << function
+            << "' (should have been " << ( expected? "true": "false" ) << ")"
+            << std::endl;
+
+        ++test_results().errors();
+    }
+}
+
+template<class T> inline bool test_trait_same_impl_( T )
+{
+    return T::value;
+}
+
+template<class T1, class T2> inline void test_trait_same_impl( char const * types,
+  boost::core::is_same<T1, T2> same, char const * file, int line, char const * function )
+{
+    if( test_trait_same_impl_( same ) )
+    {
+        test_results();
+    }
+    else
+    {
+        BOOST_LIGHTWEIGHT_TEST_OSTREAM
+            << file << "(" << line << "): test 'is_same<" << types << ">'"
+            << " failed in function '" << function
+            << "' ('" << boost::core::type_name<T1>()
+            << "' != '" << boost::core::type_name<T2>() << "')"
+            << std::endl;
+
+        ++test_results().errors();
+    }
+}
+
+} // namespace detail
+} // namespace boost
+
+#define BOOST_TEST_TRAIT_TRUE(type) ( ::boost::detail::test_trait_impl(#type, (void(*)type)0, true, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION) )
+#define BOOST_TEST_TRAIT_FALSE(type) ( ::boost::detail::test_trait_impl(#type, (void(*)type)0, false, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION) )
+
+#if defined(__GNUC__)
+// ignoring -Wvariadic-macros with #pragma doesn't work under GCC
+# pragma GCC system_header
+#endif
+
+#define BOOST_TEST_TRAIT_SAME(...) ( ::boost::detail::test_trait_same_impl(#__VA_ARGS__, ::boost::core::is_same<__VA_ARGS__>(), __FILE__, __LINE__, BOOST_CURRENT_FUNCTION) )
+
+#endif // #ifndef BOOST_CORE_LIGHTWEIGHT_TEST_TRAIT_HPP

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/core/no_exceptions_support.hpp

@@ -0,0 +1,56 @@
+#ifndef BOOST_CORE_NO_EXCEPTIONS_SUPPORT_HPP
+#define BOOST_CORE_NO_EXCEPTIONS_SUPPORT_HPP
+
+#if defined(_MSC_VER)
+#  pragma once
+#endif
+
+//----------------------------------------------------------------------
+// (C) Copyright 2004 Pavel Vozenilek.
+// Use, modification and distribution is subject to the Boost Software
+// License, Version 1.0. (See accompanying file LICENSE_1_0.txt
+// or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+//
+// This file contains helper macros used when exception support may be
+// disabled (as indicated by macro BOOST_NO_EXCEPTIONS).
+//
+// Before picking up these macros you may consider using RAII techniques
+// to deal with exceptions - their syntax can be always the same with 
+// or without exception support enabled.
+//----------------------------------------------------------------------
+
+#include <boost/config.hpp>
+#include <boost/config/workaround.hpp>
+
+#if !(defined BOOST_NO_EXCEPTIONS)
+#    define BOOST_TRY { try
+#    define BOOST_CATCH(x) catch(x)
+#    define BOOST_RETHROW throw;
+#    define BOOST_CATCH_END }
+#else
+#    if BOOST_WORKAROUND(BOOST_BORLANDC, BOOST_TESTED_AT(0x564))
+#        define BOOST_TRY { if ("")
+#        define BOOST_CATCH(x) else if (!"")
+#    elif !defined(BOOST_MSVC) || BOOST_MSVC >= 1900
+#        define BOOST_TRY { if (true)
+#        define BOOST_CATCH(x) else if (false)
+#    else
+         // warning C4127: conditional expression is constant
+#        define BOOST_TRY { \
+             __pragma(warning(push)) \
+             __pragma(warning(disable: 4127)) \
+             if (true) \
+             __pragma(warning(pop))
+#        define BOOST_CATCH(x) else \
+             __pragma(warning(push)) \
+             __pragma(warning(disable: 4127)) \
+             if (false) \
+             __pragma(warning(pop))
+#    endif
+#    define BOOST_RETHROW
+#    define BOOST_CATCH_END }
+#endif
+
+
+#endif 

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/core/noinit_adaptor.hpp

@@ -0,0 +1,88 @@
+/*
+Copyright 2019 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#ifndef BOOST_CORE_NOINIT_ADAPTOR_HPP
+#define BOOST_CORE_NOINIT_ADAPTOR_HPP
+
+#include <boost/core/allocator_access.hpp>
+
+namespace boost {
+
+template<class A>
+struct noinit_adaptor
+    : A {
+    template<class U>
+    struct rebind {
+        typedef noinit_adaptor<typename allocator_rebind<A, U>::type> other;
+    };
+
+    noinit_adaptor()
+        : A() { }
+
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+    template<class U>
+    noinit_adaptor(U&& u) BOOST_NOEXCEPT
+        : A(std::forward<U>(u)) { }
+#else
+    template<class U>
+    noinit_adaptor(const U& u) BOOST_NOEXCEPT
+        : A(u) { }
+
+    template<class U>
+    noinit_adaptor(U& u) BOOST_NOEXCEPT
+        : A(u) { }
+#endif
+
+    template<class U>
+    noinit_adaptor(const noinit_adaptor<U>& u) BOOST_NOEXCEPT
+        : A(static_cast<const A&>(u)) { }
+
+    template<class U>
+    void construct(U* p) {
+        ::new((void*)p) U;
+    }
+
+#if defined(BOOST_NO_CXX11_ALLOCATOR)
+    template<class U, class V>
+    void construct(U* p, const V& v) {
+        ::new((void*)p) U(v);
+    }
+#endif
+
+    template<class U>
+    void destroy(U* p) {
+        p->~U();
+        (void)p;
+    }
+};
+
+template<class T, class U>
+inline bool
+operator==(const noinit_adaptor<T>& lhs,
+    const noinit_adaptor<U>& rhs) BOOST_NOEXCEPT
+{
+    return static_cast<const T&>(lhs) == static_cast<const U&>(rhs);
+}
+
+template<class T, class U>
+inline bool
+operator!=(const noinit_adaptor<T>& lhs,
+    const noinit_adaptor<U>& rhs) BOOST_NOEXCEPT
+{
+    return !(lhs == rhs);
+}
+
+template<class A>
+inline noinit_adaptor<A>
+noinit_adapt(const A& a) BOOST_NOEXCEPT
+{
+    return noinit_adaptor<A>(a);
+}
+
+} /* boost */
+
+#endif

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/core/noncopyable.hpp

@@ -0,0 +1,63 @@
+//  Boost noncopyable.hpp header file  --------------------------------------//
+
+//  (C) Copyright Beman Dawes 1999-2003. Distributed under the Boost
+//  Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/utility for documentation.
+
+#ifndef BOOST_CORE_NONCOPYABLE_HPP
+#define BOOST_CORE_NONCOPYABLE_HPP
+
+#include <boost/config.hpp>
+
+namespace boost {
+
+//  Private copy constructor and copy assignment ensure classes derived from
+//  class noncopyable cannot be copied.
+
+//  Contributed by Dave Abrahams
+
+namespace noncopyable_  // protection from unintended ADL
+{
+#ifndef BOOST_NONCOPYABLE_BASE_TOKEN_DEFINED
+#define BOOST_NONCOPYABLE_BASE_TOKEN_DEFINED
+
+// noncopyable derives from base_token to enable Type Traits to detect
+// whether a type derives from noncopyable without needing the definition
+// of noncopyable itself.
+//
+// The definition of base_token is macro-guarded so that Type Trais can
+// define it locally without including this header, to avoid a dependency
+// on Core.
+
+  struct base_token {};
+
+#endif // #ifndef BOOST_NONCOPYABLE_BASE_TOKEN_DEFINED
+
+  class noncopyable: base_token
+  {
+  protected:
+#if !defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS) && !defined(BOOST_NO_CXX11_NON_PUBLIC_DEFAULTED_FUNCTIONS)
+      BOOST_CONSTEXPR noncopyable() = default;
+      ~noncopyable() = default;
+#else
+      noncopyable() {}
+      ~noncopyable() {}
+#endif
+#if !defined(BOOST_NO_CXX11_DELETED_FUNCTIONS)
+      noncopyable( const noncopyable& ) = delete;
+      noncopyable& operator=( const noncopyable& ) = delete;
+#else
+  private:  // emphasize the following members are private
+      noncopyable( const noncopyable& );
+      noncopyable& operator=( const noncopyable& );
+#endif
+  };
+}
+
+typedef noncopyable_::noncopyable noncopyable;
+
+} // namespace boost
+
+#endif  // BOOST_CORE_NONCOPYABLE_HPP

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/core/null_deleter.hpp

@@ -0,0 +1,44 @@
+/*
+ *          Copyright Andrey Semashev 2007 - 2014.
+ * Distributed under the Boost Software License, Version 1.0.
+ *    (See accompanying file LICENSE_1_0.txt or copy at
+ *          http://www.boost.org/LICENSE_1_0.txt)
+ */
+/*!
+ * \file   null_deleter.hpp
+ * \author Andrey Semashev
+ * \date   22.04.2007
+ *
+ * This header contains a \c null_deleter implementation. This is an empty
+ * function object that receives a pointer and does nothing with it.
+ * Such empty deletion strategy may be convenient, for example, when
+ * constructing <tt>shared_ptr</tt>s that point to some object that should not be
+ * deleted (i.e. a variable on the stack or some global singleton, like <tt>std::cout</tt>).
+ */
+
+#ifndef BOOST_CORE_NULL_DELETER_HPP
+#define BOOST_CORE_NULL_DELETER_HPP
+
+#include <boost/config.hpp>
+
+#ifdef BOOST_HAS_PRAGMA_ONCE
+#pragma once
+#endif
+
+namespace boost {
+
+//! A function object that does nothing and can be used as an empty deleter for \c shared_ptr
+struct null_deleter
+{
+    //! Function object result type
+    typedef void result_type;
+    /*!
+     * Does nothing
+     */
+    template< typename T >
+    void operator() (T*) const BOOST_NOEXCEPT {}
+};
+
+} // namespace boost
+
+#endif // BOOST_CORE_NULL_DELETER_HPP

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/core/nvp.hpp

@@ -0,0 +1,57 @@
+/*
+Copyright 2019 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#ifndef BOOST_CORE_NVP_HPP
+#define BOOST_CORE_NVP_HPP
+
+#include <boost/core/addressof.hpp>
+#include <boost/config.hpp>
+
+namespace boost {
+namespace serialization {
+
+template<class T>
+class nvp {
+public:
+    nvp(const char* n, T& v) BOOST_NOEXCEPT
+        : n_(n)
+        , v_(boost::addressof(v)) { }
+
+    const char* name() const BOOST_NOEXCEPT {
+        return n_;
+    }
+
+    T& value() const BOOST_NOEXCEPT {
+        return *v_;
+    }
+
+    const T& const_value() const BOOST_NOEXCEPT {
+        return *v_;
+    }
+
+private:
+    const char* n_;
+    T* v_;
+};
+
+template<class T>
+inline const nvp<T>
+make_nvp(const char* n, T& v) BOOST_NOEXCEPT
+{
+    return nvp<T>(n, v);
+}
+
+} /* serialization */
+
+using serialization::nvp;
+using serialization::make_nvp;
+
+} /* boost */
+
+#define BOOST_NVP(v) boost::make_nvp(BOOST_STRINGIZE(v), v)
+
+#endif

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/core/pointer_traits.hpp

@@ -0,0 +1,277 @@
+/*
+Copyright 2017-2021 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#ifndef BOOST_CORE_POINTER_TRAITS_HPP
+#define BOOST_CORE_POINTER_TRAITS_HPP
+
+#include <boost/config.hpp>
+#include <boost/core/addressof.hpp>
+#include <cstddef>
+
+namespace boost {
+namespace detail {
+
+struct ptr_none { };
+
+template<class>
+struct ptr_valid {
+    typedef void type;
+};
+
+template<class>
+struct ptr_first {
+    typedef ptr_none type;
+};
+
+#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
+template<template<class, class...> class T, class U, class... Args>
+struct ptr_first<T<U, Args...> > {
+    typedef U type;
+};
+#else
+template<template<class> class T, class U>
+struct ptr_first<T<U> > {
+    typedef U type;
+};
+
+template<template<class, class> class T, class U1, class U2>
+struct ptr_first<T<U1, U2> > {
+    typedef U1 type;
+};
+
+template<template<class, class, class> class T, class U1, class U2, class U3>
+struct ptr_first<T<U1, U2, U3> > {
+    typedef U1 type;
+};
+#endif
+
+template<class T, class = void>
+struct ptr_element {
+    typedef typename ptr_first<T>::type type;
+};
+
+template<class T>
+struct ptr_element<T, typename ptr_valid<typename T::element_type>::type> {
+    typedef typename T::element_type type;
+};
+
+template<class, class = void>
+struct ptr_difference {
+    typedef std::ptrdiff_t type;
+};
+
+template<class T>
+struct ptr_difference<T,
+    typename ptr_valid<typename T::difference_type>::type> {
+    typedef typename T::difference_type type;
+};
+
+template<class, class>
+struct ptr_transform { };
+
+#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
+template<template<class, class...> class T, class U, class... Args, class V>
+struct ptr_transform<T<U, Args...>, V> {
+    typedef T<V, Args...> type;
+};
+#else
+template<template<class> class T, class U, class V>
+struct ptr_transform<T<U>, V> {
+    typedef T<V> type;
+};
+
+template<template<class, class> class T, class U1, class U2, class V>
+struct ptr_transform<T<U1, U2>, V> {
+    typedef T<V, U2> type;
+};
+
+template<template<class, class, class> class T,
+    class U1, class U2, class U3, class V>
+struct ptr_transform<T<U1, U2, U3>, V> {
+    typedef T<V, U2, U3> type;
+};
+#endif
+
+template<class T, class U, class = void>
+struct ptr_rebind
+    : ptr_transform<T, U> { };
+
+template<class T, class U>
+struct ptr_rebind<T, U,
+    typename ptr_valid<typename T::template rebind<U> >::type> {
+    typedef typename T::template rebind<U> type;
+};
+
+#if !defined(BOOST_NO_CXX11_DECLTYPE_N3276)
+template<class T, class E>
+class ptr_to_expr {
+    template<class>
+    struct result {
+        char x, y;
+    };
+
+    static E& source();
+
+    template<class O>
+    static auto check(int) -> result<decltype(O::pointer_to(source()))>;
+
+    template<class>
+    static char check(long);
+
+public:
+    BOOST_STATIC_CONSTEXPR bool value = sizeof(check<T>(0)) > 1;
+};
+
+template<class T, class E>
+struct ptr_to_expr<T*, E> {
+    BOOST_STATIC_CONSTEXPR bool value = true;
+};
+
+template<class T, class E>
+struct ptr_has_to {
+    BOOST_STATIC_CONSTEXPR bool value = ptr_to_expr<T, E>::value;
+};
+#else
+template<class, class>
+struct ptr_has_to {
+    BOOST_STATIC_CONSTEXPR bool value = true;
+};
+#endif
+
+template<class T>
+struct ptr_has_to<T, void> {
+    BOOST_STATIC_CONSTEXPR bool value = false;
+};
+
+template<class T>
+struct ptr_has_to<T, const void> {
+    BOOST_STATIC_CONSTEXPR bool value = false;
+};
+
+template<class T>
+struct ptr_has_to<T, volatile void> {
+    BOOST_STATIC_CONSTEXPR bool value = false;
+};
+
+template<class T>
+struct ptr_has_to<T, const volatile void> {
+    BOOST_STATIC_CONSTEXPR bool value = false;
+};
+
+template<class T, class E, bool = ptr_has_to<T, E>::value>
+struct ptr_to { };
+
+template<class T, class E>
+struct ptr_to<T, E, true> {
+    static T pointer_to(E& v) {
+        return T::pointer_to(v);
+    }
+};
+
+template<class T>
+struct ptr_to<T*, T, true> {
+    static T* pointer_to(T& v) BOOST_NOEXCEPT {
+        return boost::addressof(v);
+    }
+};
+
+template<class T, class E>
+struct ptr_traits
+    : ptr_to<T, E> {
+    typedef T pointer;
+    typedef E element_type;
+    typedef typename ptr_difference<T>::type difference_type;
+
+    template<class U>
+    struct rebind_to
+        : ptr_rebind<T, U> { };
+
+#if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
+    template<class U>
+    using rebind = typename rebind_to<U>::type;
+#endif
+};
+
+template<class T>
+struct ptr_traits<T, ptr_none> { };
+
+} /* detail */
+
+template<class T>
+struct pointer_traits
+    : detail::ptr_traits<T, typename detail::ptr_element<T>::type> { };
+
+template<class T>
+struct pointer_traits<T*>
+    : detail::ptr_to<T*, T> {
+    typedef T* pointer;
+    typedef T element_type;
+    typedef std::ptrdiff_t difference_type;
+
+    template<class U>
+    struct rebind_to {
+        typedef U* type;
+    };
+
+#if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
+    template<class U>
+    using rebind = typename rebind_to<U>::type*;
+#endif
+};
+
+template<class T>
+BOOST_CONSTEXPR inline T*
+to_address(T* v) BOOST_NOEXCEPT
+{
+    return v;
+}
+
+#if !defined(BOOST_NO_CXX14_RETURN_TYPE_DEDUCTION)
+namespace detail {
+
+template<class T>
+inline T*
+ptr_address(T* v, int) BOOST_NOEXCEPT
+{
+    return v;
+}
+
+template<class T>
+inline auto
+ptr_address(const T& v, int) BOOST_NOEXCEPT
+-> decltype(boost::pointer_traits<T>::to_address(v))
+{
+    return boost::pointer_traits<T>::to_address(v);
+}
+
+template<class T>
+inline auto
+ptr_address(const T& v, long) BOOST_NOEXCEPT
+{
+    return boost::detail::ptr_address(v.operator->(), 0);
+}
+
+} /* detail */
+
+template<class T>
+inline auto
+to_address(const T& v) BOOST_NOEXCEPT
+{
+    return boost::detail::ptr_address(v, 0);
+}
+#else
+template<class T>
+inline typename pointer_traits<T>::element_type*
+to_address(const T& v) BOOST_NOEXCEPT
+{
+    return boost::to_address(v.operator->());
+}
+#endif
+
+} /* boost */
+
+#endif

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/core/quick_exit.hpp

@@ -0,0 +1,59 @@
+#ifndef BOOST_CORE_QUICK_EXIT_HPP_INCLUDED
+#define BOOST_CORE_QUICK_EXIT_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//  boost/core/quick_exit.hpp
+//
+//  Copyright 2018 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+
+#include <boost/config.hpp>
+#include <stdlib.h>
+
+#if defined(__MINGW32__) && !defined(__MINGW64_VERSION_MAJOR)
+
+extern "C" _CRTIMP __cdecl __MINGW_NOTHROW  void _exit (int) __MINGW_ATTRIB_NORETURN;
+
+#endif
+
+#if defined(__CYGWIN__) && __cplusplus < 201103L
+
+extern "C" _Noreturn void quick_exit(int);
+
+#endif
+
+namespace boost
+{
+
+BOOST_NORETURN inline void quick_exit( int code ) BOOST_NOEXCEPT
+{
+#if defined(_MSC_VER) && _MSC_VER < 1900
+
+    ::_exit( code );
+
+#elif defined(__MINGW32__)
+
+    ::_exit( code );
+
+#elif defined(__APPLE__)
+
+    ::_Exit( code );
+
+#else
+
+    ::quick_exit( code );
+
+#endif
+}
+
+} // namespace boost
+
+#endif  // #ifndef BOOST_CORE_QUICK_EXIT_HPP_INCLUDED

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/core/ref.hpp

@@ -0,0 +1,338 @@
+#ifndef BOOST_CORE_REF_HPP
+#define BOOST_CORE_REF_HPP
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+#include <boost/config.hpp>
+#include <boost/config/workaround.hpp>
+#include <boost/core/addressof.hpp>
+#include <boost/core/enable_if.hpp>
+
+//
+//  ref.hpp - ref/cref, useful helper functions
+//
+//  Copyright (C) 1999, 2000 Jaakko Jarvi (jaakko.jarvi@cs.utu.fi)
+//  Copyright (C) 2001, 2002 Peter Dimov
+//  Copyright (C) 2002 David Abrahams
+//
+//  Copyright (C) 2014 Glen Joseph Fernandes
+//  (glenjofe@gmail.com)
+//
+//  Copyright (C) 2014 Agustin Berge
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+//  See http://www.boost.org/libs/core/doc/html/core/ref.html for documentation.
+//
+
+/**
+ @file
+*/
+
+/**
+ Boost namespace.
+*/
+namespace boost
+{
+
+#if defined( BOOST_MSVC ) && BOOST_WORKAROUND( BOOST_MSVC, == 1600 )
+
+    struct ref_workaround_tag {};
+
+#endif
+
+namespace detail
+{
+
+template< class Y, class T > struct ref_convertible
+{
+    typedef char (&yes) [1];
+    typedef char (&no)  [2];
+
+    static yes f( T* );
+    static no  f( ... );
+
+    enum _vt { value = sizeof( (f)( static_cast<Y*>(0) ) ) == sizeof(yes) };
+};
+
+struct ref_empty
+{
+};
+
+} // namespace detail
+
+// reference_wrapper
+
+/**
+ @brief Contains a reference to an object of type `T`.
+
+ `reference_wrapper` is primarily used to "feed" references to
+ function templates (algorithms) that take their parameter by
+ value. It provides an implicit conversion to `T&`, which
+ usually allows the function templates to work on references
+ unmodified.
+*/
+template<class T> class reference_wrapper
+{
+public:
+    /**
+     Type `T`.
+    */
+    typedef T type;
+
+    /**
+     Constructs a `reference_wrapper` object that stores a
+     reference to `t`.
+
+     @remark Does not throw.
+    */
+    BOOST_FORCEINLINE explicit reference_wrapper(T& t): t_(boost::addressof(t)) {}
+
+#if defined( BOOST_MSVC ) && BOOST_WORKAROUND( BOOST_MSVC, == 1600 )
+
+    BOOST_FORCEINLINE explicit reference_wrapper( T & t, ref_workaround_tag ): t_( boost::addressof( t ) ) {}
+
+#endif
+
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+    /**
+     @remark Construction from a temporary object is disabled.
+    */
+    BOOST_DELETED_FUNCTION(reference_wrapper(T&& t))
+public:
+#endif
+
+    template<class Y> friend class reference_wrapper;
+
+    /**
+     Constructs a `reference_wrapper` object that stores the
+     reference stored in the compatible `reference_wrapper` `r`.
+
+     @remark Only enabled when `Y*` is convertible to `T*`.
+     @remark Does not throw.
+    */
+    template<class Y> reference_wrapper( reference_wrapper<Y> r,
+        typename enable_if_c<boost::detail::ref_convertible<Y, T>::value,
+            boost::detail::ref_empty>::type = boost::detail::ref_empty() ): t_( r.t_ )
+    {
+    }
+
+    /**
+     @return The stored reference.
+     @remark Does not throw.
+    */
+    BOOST_FORCEINLINE operator T& () const { return *t_; }
+
+    /**
+     @return The stored reference.
+     @remark Does not throw.
+    */
+    BOOST_FORCEINLINE T& get() const { return *t_; }
+
+    /**
+     @return A pointer to the object referenced by the stored
+       reference.
+     @remark Does not throw.
+    */
+    BOOST_FORCEINLINE T* get_pointer() const { return t_; }
+
+private:
+
+    T* t_;
+};
+
+// ref
+
+/**
+ @cond
+*/
+#if defined( BOOST_BORLANDC ) && BOOST_WORKAROUND( BOOST_BORLANDC, BOOST_TESTED_AT(0x581) )
+#  define BOOST_REF_CONST
+#else
+#  define BOOST_REF_CONST const
+#endif
+/**
+ @endcond
+*/
+
+/**
+ @return `reference_wrapper<T>(t)`
+ @remark Does not throw.
+*/
+template<class T> BOOST_FORCEINLINE reference_wrapper<T> BOOST_REF_CONST ref( T & t )
+{
+#if defined( BOOST_MSVC ) && BOOST_WORKAROUND( BOOST_MSVC, == 1600 )
+
+    return reference_wrapper<T>( t, ref_workaround_tag() );
+
+#else
+
+    return reference_wrapper<T>( t );
+
+#endif
+}
+
+// cref
+
+/**
+ @return `reference_wrapper<T const>(t)`
+ @remark Does not throw.
+*/
+template<class T> BOOST_FORCEINLINE reference_wrapper<T const> BOOST_REF_CONST cref( T const & t )
+{
+    return reference_wrapper<T const>(t);
+}
+
+#undef BOOST_REF_CONST
+
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+
+/**
+ @cond
+*/
+#if defined(BOOST_NO_CXX11_DELETED_FUNCTIONS)
+#  define BOOST_REF_DELETE
+#else
+#  define BOOST_REF_DELETE = delete
+#endif
+/**
+ @endcond
+*/
+
+/**
+ @remark Construction from a temporary object is disabled.
+*/
+template<class T> void ref(T const&&) BOOST_REF_DELETE;
+
+/**
+ @remark Construction from a temporary object is disabled.
+*/
+template<class T> void cref(T const&&) BOOST_REF_DELETE;
+
+#undef BOOST_REF_DELETE
+
+#endif
+
+// is_reference_wrapper
+
+/**
+ @brief Determine if a type `T` is an instantiation of
+ `reference_wrapper`.
+
+ The value static constant will be true if the type `T` is a
+ specialization of `reference_wrapper`.
+*/
+template<typename T> struct is_reference_wrapper
+{
+    BOOST_STATIC_CONSTANT( bool, value = false );
+};
+
+/**
+ @cond
+*/
+template<typename T> struct is_reference_wrapper< reference_wrapper<T> >
+{
+    BOOST_STATIC_CONSTANT( bool, value = true );
+};
+
+#if !defined(BOOST_NO_CV_SPECIALIZATIONS)
+
+template<typename T> struct is_reference_wrapper< reference_wrapper<T> const >
+{
+    BOOST_STATIC_CONSTANT( bool, value = true );
+};
+
+template<typename T> struct is_reference_wrapper< reference_wrapper<T> volatile >
+{
+    BOOST_STATIC_CONSTANT( bool, value = true );
+};
+
+template<typename T> struct is_reference_wrapper< reference_wrapper<T> const volatile >
+{
+    BOOST_STATIC_CONSTANT( bool, value = true );
+};
+
+#endif // !defined(BOOST_NO_CV_SPECIALIZATIONS)
+
+/**
+ @endcond
+*/
+
+
+// unwrap_reference
+
+/**
+ @brief Find the type in a `reference_wrapper`.
+
+ The `typedef` type is `T::type` if `T` is a
+ `reference_wrapper`, `T` otherwise.
+*/
+template<typename T> struct unwrap_reference
+{
+    typedef T type;
+};
+
+/**
+ @cond
+*/
+template<typename T> struct unwrap_reference< reference_wrapper<T> >
+{
+    typedef T type;
+};
+
+#if !defined(BOOST_NO_CV_SPECIALIZATIONS)
+
+template<typename T> struct unwrap_reference< reference_wrapper<T> const >
+{
+    typedef T type;
+};
+
+template<typename T> struct unwrap_reference< reference_wrapper<T> volatile >
+{
+    typedef T type;
+};
+
+template<typename T> struct unwrap_reference< reference_wrapper<T> const volatile >
+{
+    typedef T type;
+};
+
+#endif // !defined(BOOST_NO_CV_SPECIALIZATIONS)
+
+/**
+ @endcond
+*/
+
+// unwrap_ref
+
+/**
+ @return `unwrap_reference<T>::type&(t)`
+ @remark Does not throw.
+*/
+template<class T> BOOST_FORCEINLINE typename unwrap_reference<T>::type& unwrap_ref( T & t )
+{
+    return t;
+}
+
+// get_pointer
+
+/**
+ @cond
+*/
+template<class T> BOOST_FORCEINLINE T* get_pointer( reference_wrapper<T> const & r )
+{
+    return r.get_pointer();
+}
+/**
+ @endcond
+*/
+
+} // namespace boost
+
+#endif // #ifndef BOOST_CORE_REF_HPP

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/core/scoped_enum.hpp

@@ -0,0 +1,194 @@
+//  scoped_enum.hpp  ---------------------------------------------------------//
+
+//  Copyright Beman Dawes, 2009
+//  Copyright (C) 2011-2012 Vicente J. Botet Escriba
+//  Copyright (C) 2012 Anthony Williams
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+#ifndef BOOST_CORE_SCOPED_ENUM_HPP
+#define BOOST_CORE_SCOPED_ENUM_HPP
+
+#include <boost/config.hpp>
+
+#ifdef BOOST_HAS_PRAGMA_ONCE
+#pragma once
+#endif
+
+namespace boost
+{
+
+#ifdef BOOST_NO_CXX11_SCOPED_ENUMS
+
+  /**
+   * Meta-function to get the native enum type associated to an enum class or its emulation.
+   */
+  template <typename EnumType>
+  struct native_type
+  {
+    /**
+     * The member typedef type names the native enum type associated to the scoped enum,
+     * which is it self if the compiler supports scoped enums or EnumType::enum_type if it is an emulated scoped enum.
+     */
+    typedef typename EnumType::enum_type type;
+  };
+
+  /**
+   * Casts a scoped enum to its underlying type.
+   *
+   * This function is useful when working with scoped enum classes, which doens't implicitly convert to the underlying type.
+   * @param v A scoped enum.
+   * @returns The underlying type.
+   * @throws No-throws.
+   */
+  template <typename UnderlyingType, typename EnumType>
+  inline
+  BOOST_CONSTEXPR UnderlyingType underlying_cast(EnumType v) BOOST_NOEXCEPT
+  {
+    return v.get_underlying_value_();
+  }
+
+  /**
+   * Casts a scoped enum to its native enum type.
+   *
+   * This function is useful to make programs portable when the scoped enum emulation can not be use where native enums can.
+   *
+   * EnumType the scoped enum type
+   *
+   * @param v A scoped enum.
+   * @returns The native enum value.
+   * @throws No-throws.
+   */
+  template <typename EnumType>
+  inline
+  BOOST_CONSTEXPR typename EnumType::enum_type native_value(EnumType e) BOOST_NOEXCEPT
+  {
+    return e.get_native_value_();
+  }
+
+#else  // BOOST_NO_CXX11_SCOPED_ENUMS
+
+  template <typename EnumType>
+  struct native_type
+  {
+    typedef EnumType type;
+  };
+
+  template <typename UnderlyingType, typename EnumType>
+  inline
+  BOOST_CONSTEXPR UnderlyingType underlying_cast(EnumType v) BOOST_NOEXCEPT
+  {
+    return static_cast<UnderlyingType>(v);
+  }
+
+  template <typename EnumType>
+  inline
+  BOOST_CONSTEXPR EnumType native_value(EnumType e) BOOST_NOEXCEPT
+  {
+    return e;
+  }
+
+#endif // BOOST_NO_CXX11_SCOPED_ENUMS
+}
+
+
+#ifdef BOOST_NO_CXX11_SCOPED_ENUMS
+
+#ifndef BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS
+
+#define BOOST_SCOPED_ENUM_UT_DECLARE_CONVERSION_OPERATOR \
+     explicit BOOST_CONSTEXPR operator underlying_type() const BOOST_NOEXCEPT { return get_underlying_value_(); }
+
+#else
+
+#define BOOST_SCOPED_ENUM_UT_DECLARE_CONVERSION_OPERATOR
+
+#endif
+
+/**
+ * Start a declaration of a scoped enum.
+ *
+ * @param EnumType The new scoped enum.
+ * @param UnderlyingType The underlying type.
+ */
+#define BOOST_SCOPED_ENUM_UT_DECLARE_BEGIN(EnumType, UnderlyingType)    \
+    struct EnumType {                                                   \
+        typedef void is_boost_scoped_enum_tag;                          \
+        typedef UnderlyingType underlying_type;                         \
+        EnumType() BOOST_NOEXCEPT {}                                    \
+        explicit BOOST_CONSTEXPR EnumType(underlying_type v) BOOST_NOEXCEPT : v_(v) {}                 \
+        BOOST_CONSTEXPR underlying_type get_underlying_value_() const BOOST_NOEXCEPT { return v_; }    \
+        BOOST_SCOPED_ENUM_UT_DECLARE_CONVERSION_OPERATOR                \
+    private:                                                            \
+        underlying_type v_;                                             \
+        typedef EnumType self_type;                                     \
+    public:                                                             \
+        enum enum_type
+
+#define BOOST_SCOPED_ENUM_DECLARE_END2() \
+        BOOST_CONSTEXPR enum_type get_native_value_() const BOOST_NOEXCEPT { return enum_type(v_); } \
+        friend BOOST_CONSTEXPR bool operator ==(self_type lhs, self_type rhs) BOOST_NOEXCEPT { return enum_type(lhs.v_)==enum_type(rhs.v_); } \
+        friend BOOST_CONSTEXPR bool operator ==(self_type lhs, enum_type rhs) BOOST_NOEXCEPT { return enum_type(lhs.v_)==rhs; } \
+        friend BOOST_CONSTEXPR bool operator ==(enum_type lhs, self_type rhs) BOOST_NOEXCEPT { return lhs==enum_type(rhs.v_); } \
+        friend BOOST_CONSTEXPR bool operator !=(self_type lhs, self_type rhs) BOOST_NOEXCEPT { return enum_type(lhs.v_)!=enum_type(rhs.v_); } \
+        friend BOOST_CONSTEXPR bool operator !=(self_type lhs, enum_type rhs) BOOST_NOEXCEPT { return enum_type(lhs.v_)!=rhs; } \
+        friend BOOST_CONSTEXPR bool operator !=(enum_type lhs, self_type rhs) BOOST_NOEXCEPT { return lhs!=enum_type(rhs.v_); } \
+        friend BOOST_CONSTEXPR bool operator <(self_type lhs, self_type rhs) BOOST_NOEXCEPT { return enum_type(lhs.v_)<enum_type(rhs.v_); } \
+        friend BOOST_CONSTEXPR bool operator <(self_type lhs, enum_type rhs) BOOST_NOEXCEPT { return enum_type(lhs.v_)<rhs; } \
+        friend BOOST_CONSTEXPR bool operator <(enum_type lhs, self_type rhs) BOOST_NOEXCEPT { return lhs<enum_type(rhs.v_); } \
+        friend BOOST_CONSTEXPR bool operator <=(self_type lhs, self_type rhs) BOOST_NOEXCEPT { return enum_type(lhs.v_)<=enum_type(rhs.v_); } \
+        friend BOOST_CONSTEXPR bool operator <=(self_type lhs, enum_type rhs) BOOST_NOEXCEPT { return enum_type(lhs.v_)<=rhs; } \
+        friend BOOST_CONSTEXPR bool operator <=(enum_type lhs, self_type rhs) BOOST_NOEXCEPT { return lhs<=enum_type(rhs.v_); } \
+        friend BOOST_CONSTEXPR bool operator >(self_type lhs, self_type rhs) BOOST_NOEXCEPT { return enum_type(lhs.v_)>enum_type(rhs.v_); } \
+        friend BOOST_CONSTEXPR bool operator >(self_type lhs, enum_type rhs) BOOST_NOEXCEPT { return enum_type(lhs.v_)>rhs; } \
+        friend BOOST_CONSTEXPR bool operator >(enum_type lhs, self_type rhs) BOOST_NOEXCEPT { return lhs>enum_type(rhs.v_); } \
+        friend BOOST_CONSTEXPR bool operator >=(self_type lhs, self_type rhs) BOOST_NOEXCEPT { return enum_type(lhs.v_)>=enum_type(rhs.v_); } \
+        friend BOOST_CONSTEXPR bool operator >=(self_type lhs, enum_type rhs) BOOST_NOEXCEPT { return enum_type(lhs.v_)>=rhs; } \
+        friend BOOST_CONSTEXPR bool operator >=(enum_type lhs, self_type rhs) BOOST_NOEXCEPT { return lhs>=enum_type(rhs.v_); } \
+    };
+
+#define BOOST_SCOPED_ENUM_DECLARE_END(EnumType) \
+    ; \
+    BOOST_CONSTEXPR EnumType(enum_type v) BOOST_NOEXCEPT : v_(v) {}                 \
+    BOOST_SCOPED_ENUM_DECLARE_END2()
+
+/**
+ * Starts a declaration of a scoped enum with the default int underlying type.
+ *
+ * @param EnumType The new scoped enum.
+ */
+#define BOOST_SCOPED_ENUM_DECLARE_BEGIN(EnumType) \
+  BOOST_SCOPED_ENUM_UT_DECLARE_BEGIN(EnumType,int)
+
+/**
+ * Name of the native enum type.
+ *
+ * @param EnumType The new scoped enum.
+ */
+#define BOOST_SCOPED_ENUM_NATIVE(EnumType) EnumType::enum_type
+/**
+ * Forward declares an scoped enum.
+ *
+ * @param EnumType The scoped enum.
+ */
+#define BOOST_SCOPED_ENUM_FORWARD_DECLARE(EnumType) struct EnumType
+
+#else  // BOOST_NO_CXX11_SCOPED_ENUMS
+
+#define BOOST_SCOPED_ENUM_UT_DECLARE_BEGIN(EnumType,UnderlyingType) enum class EnumType : UnderlyingType
+#define BOOST_SCOPED_ENUM_DECLARE_BEGIN(EnumType) enum class EnumType
+#define BOOST_SCOPED_ENUM_DECLARE_END2()
+#define BOOST_SCOPED_ENUM_DECLARE_END(EnumType) ;
+
+#define BOOST_SCOPED_ENUM_NATIVE(EnumType) EnumType
+#define BOOST_SCOPED_ENUM_FORWARD_DECLARE(EnumType) enum class EnumType
+
+#endif  // BOOST_NO_CXX11_SCOPED_ENUMS
+
+// Deprecated macros
+#define BOOST_SCOPED_ENUM_START(name) BOOST_SCOPED_ENUM_DECLARE_BEGIN(name)
+#define BOOST_SCOPED_ENUM_END BOOST_SCOPED_ENUM_DECLARE_END2()
+#define BOOST_SCOPED_ENUM(name) BOOST_SCOPED_ENUM_NATIVE(name)
+
+#endif  // BOOST_CORE_SCOPED_ENUM_HPP

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/core/span.hpp

@@ -0,0 +1,407 @@
+/*
+Copyright 2019 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#ifndef BOOST_CORE_SPAN_HPP
+#define BOOST_CORE_SPAN_HPP
+
+#include <array>
+#include <iterator>
+#include <type_traits>
+#include <cstddef>
+
+namespace boost {
+
+constexpr std::size_t dynamic_extent = static_cast<std::size_t>(-1);
+
+template<class T, std::size_t E = dynamic_extent>
+class span;
+
+namespace detail {
+
+template<class U, class T>
+struct span_convertible {
+    static constexpr bool value = std::is_convertible<U(*)[], T(*)[]>::value;
+};
+
+template<std::size_t E, std::size_t N>
+struct span_capacity {
+    static constexpr bool value = E == boost::dynamic_extent || E == N;
+};
+
+template<class T, std::size_t E, class U, std::size_t N>
+struct span_compatible {
+    static constexpr bool value = span_capacity<E, N>::value &&
+        span_convertible<U, T>::value;
+};
+
+template<class T>
+struct span_uncvref {
+    typedef typename std::remove_cv<typename
+        std::remove_reference<T>::type>::type type;
+};
+
+template<class>
+struct span_is_span {
+    static constexpr bool value = false;
+};
+
+template<class T, std::size_t E>
+struct span_is_span<boost::span<T, E> > {
+    static constexpr bool value = true;
+};
+
+template<class T>
+struct span_is_array {
+    static constexpr bool value = false;
+};
+
+template<class T, std::size_t N>
+struct span_is_array<std::array<T, N> > {
+    static constexpr bool value = true;
+};
+
+template<class, class = void>
+struct span_data { };
+
+template<class T>
+struct span_data<T,
+    typename std::enable_if<std::is_pointer<decltype(std::declval<T
+        &>().data())>::value>::type> {
+    typedef typename std::remove_pointer<decltype(std::declval<T
+        &>().data())>::type type;
+};
+
+template<class, class, class = void>
+struct span_has_data {
+    static constexpr bool value = false;
+};
+
+template<class R, class T>
+struct span_has_data<R, T, typename std::enable_if<span_convertible<typename
+    span_data<R>::type, T>::value>::type> {
+    static constexpr bool value = true;
+};
+
+template<class, class = void>
+struct span_has_size {
+    static constexpr bool value = false;
+};
+
+template<class R>
+struct span_has_size<R, typename
+    std::enable_if<std::is_convertible<decltype(std::declval<R&>().size()),
+        std::size_t>::value>::type> {
+    static constexpr bool value = true;
+};
+
+template<class R, class T>
+struct span_is_range {
+    static constexpr bool value = (std::is_const<T>::value ||
+        std::is_lvalue_reference<R>::value) &&
+        !span_is_span<typename span_uncvref<R>::type>::value &&
+        !span_is_array<typename span_uncvref<R>::type>::value &&
+        !std::is_array<typename span_uncvref<R>::type>::value &&
+        span_has_data<R, T>::value &&
+        span_has_size<R>::value;
+};
+
+template<std::size_t E, std::size_t N>
+struct span_implicit {
+    static constexpr bool value = E == boost::dynamic_extent ||
+        N != boost::dynamic_extent;
+};
+
+template<class T, std::size_t E, class U, std::size_t N>
+struct span_copyable {
+    static constexpr bool value = (N == boost::dynamic_extent ||
+        span_capacity<E, N>::value) && span_convertible<U, T>::value;
+};
+
+template<std::size_t E, std::size_t O>
+struct span_sub {
+    static constexpr std::size_t value = E == boost::dynamic_extent ?
+        boost::dynamic_extent : E - O;
+};
+
+template<class T, std::size_t E>
+struct span_store {
+    constexpr span_store(T* p_, std::size_t) noexcept
+        : p(p_) { }
+    static constexpr std::size_t n = E;
+    T* p;
+};
+
+template<class T>
+struct span_store<T, boost::dynamic_extent> {
+    constexpr span_store(T* p_, std::size_t n_) noexcept
+        : p(p_)
+        , n(n_) { }
+    T* p;
+    std::size_t n;
+};
+
+template<class T, std::size_t E>
+struct span_bytes {
+    static constexpr std::size_t value = sizeof(T) * E;
+};
+
+template<class T>
+struct span_bytes<T, boost::dynamic_extent> {
+    static constexpr std::size_t value = boost::dynamic_extent;
+};
+
+} /* detail */
+
+template<class T, std::size_t E>
+class span {
+public:
+    typedef T element_type;
+    typedef typename std::remove_cv<T>::type value_type;
+    typedef std::size_t size_type;
+    typedef std::ptrdiff_t difference_type;
+    typedef T* pointer;
+    typedef const T* const_pointer;
+    typedef T& reference;
+    typedef const T& const_reference;
+    typedef T* iterator;
+    typedef const T* const_iterator;
+    typedef std::reverse_iterator<T*> reverse_iterator;
+    typedef std::reverse_iterator<const T*> const_reverse_iterator;
+
+    static constexpr std::size_t extent = E;
+
+    template<std::size_t N = E,
+        typename std::enable_if<N == dynamic_extent || N == 0, int>::type = 0>
+    constexpr span() noexcept
+        : s_(0, 0) { }
+
+    template<class I,
+        typename std::enable_if<E == dynamic_extent &&
+            detail::span_convertible<I, T>::value, int>::type = 0>
+    constexpr span(I* f, size_type c)
+        : s_(f, c) { }
+
+    template<class I,
+        typename std::enable_if<E != dynamic_extent &&
+            detail::span_convertible<I, T>::value, int>::type = 0>
+    explicit constexpr span(I* f, size_type c)
+        : s_(f, c) { }
+
+    template<class I, class L,
+        typename std::enable_if<E == dynamic_extent &&
+            detail::span_convertible<I, T>::value, int>::type = 0>
+    constexpr span(I* f, L* l)
+        : s_(f, l - f) { }
+
+    template<class I, class L,
+        typename std::enable_if<E != dynamic_extent &&
+            detail::span_convertible<I, T>::value, int>::type = 0>
+    explicit constexpr span(I* f, L* l)
+        : s_(f, l - f) { }
+
+    template<std::size_t N,
+        typename std::enable_if<detail::span_capacity<E, N>::value,
+            int>::type = 0>
+    constexpr span(typename std::enable_if<true, T>::type (&a)[N]) noexcept
+        : s_(a, N) { }
+
+    template<class U, std::size_t N,
+        typename std::enable_if<detail::span_compatible<T, E, U, N>::value,
+            int>::type = 0>
+    constexpr span(std::array<U, N>& a) noexcept
+        : s_(a.data(), N) { }
+
+    template<class U, std::size_t N,
+        typename std::enable_if<detail::span_compatible<T, E, const U,
+            N>::value, int>::type = 0>
+    constexpr span(const std::array<U, N>& a) noexcept
+        : s_(a.data(), N) { }
+
+    template<class R,
+        typename std::enable_if<E == dynamic_extent &&
+            detail::span_is_range<R, T>::value, int>::type = 0>
+    constexpr span(R&& r) noexcept(noexcept(r.data()) && noexcept(r.size()))
+        : s_(r.data(), r.size()) { }
+
+    template<class R,
+        typename std::enable_if<E != dynamic_extent &&
+            detail::span_is_range<R, T>::value, int>::type = 0>
+    explicit constexpr span(R&& r) noexcept(noexcept(r.data()) &&
+        noexcept(r.size()))
+        : s_(r.data(), r.size()) { }
+
+    template<class U, std::size_t N,
+        typename std::enable_if<detail::span_implicit<E, N>::value &&
+            detail::span_copyable<T, E, U, N>::value, int>::type = 0>
+    constexpr span(const span<U, N>& s) noexcept
+        : s_(s.data(), s.size()) { }
+
+    template<class U, std::size_t N,
+        typename std::enable_if<!detail::span_implicit<E, N>::value &&
+            detail::span_copyable<T, E, U, N>::value, int>::type = 0>
+    explicit constexpr span(const span<U, N>& s) noexcept
+        : s_(s.data(), s.size()) { }
+
+    template<std::size_t C>
+    constexpr span<T, C> first() const {
+        static_assert(C <= E, "Count <= Extent");
+        return span<T, C>(s_.p, C);
+    }
+
+    template<std::size_t C>
+    constexpr span<T, C> last() const {
+        static_assert(C <= E, "Count <= Extent");
+        return span<T, C>(s_.p + (s_.n - C), C);
+    }
+
+    template<std::size_t O, std::size_t C = dynamic_extent>
+    constexpr typename std::enable_if<C == dynamic_extent,
+        span<T, detail::span_sub<E, O>::value> >::type subspan() const {
+        static_assert(O <= E, "Offset <= Extent");
+        return span<T, detail::span_sub<E, O>::value>(s_.p + O, s_.n - O);
+    }
+
+    template<std::size_t O, std::size_t C = dynamic_extent>
+    constexpr typename std::enable_if<C != dynamic_extent,
+        span<T, C> >::type subspan() const {
+        static_assert(O <= E && C <= E - O,
+            "Offset <= Extent && Count <= Extent - Offset");
+        return span<T, C>(s_.p + O, C);
+    }
+
+    constexpr span<T, dynamic_extent> first(size_type c) const {
+        return span<T, dynamic_extent>(s_.p, c);
+    }
+
+    constexpr span<T, dynamic_extent> last(size_type c) const {
+        return span<T, dynamic_extent>(s_.p + (s_.n - c), c);
+    }
+
+    constexpr span<T, dynamic_extent> subspan(size_type o,
+        size_type c = dynamic_extent) const {
+        return span<T, dynamic_extent>(s_.p + o,
+            c == dynamic_extent ? s_.n - o : c);
+    }
+
+    constexpr size_type size() const noexcept {
+        return s_.n;
+    }
+
+    constexpr size_type size_bytes() const noexcept {
+        return s_.n * sizeof(T);
+    }
+
+    constexpr bool empty() const noexcept {
+        return s_.n == 0;
+    }
+
+    constexpr reference operator[](size_type i) const {
+        return s_.p[i];
+    }
+
+    constexpr reference front() const {
+        return *s_.p;
+    }
+
+    constexpr reference back() const {
+        return s_.p[s_.n - 1];
+    }
+
+    constexpr pointer data() const noexcept {
+        return s_.p;
+    }
+
+    constexpr iterator begin() const noexcept {
+        return s_.p;
+    }
+
+    constexpr iterator end() const noexcept {
+        return s_.p + s_.n;
+    }
+
+    constexpr reverse_iterator rbegin() const noexcept {
+        return reverse_iterator(s_.p + s_.n);
+    }
+
+    constexpr reverse_iterator rend() const noexcept {
+        return reverse_iterator(s_.p);
+    }
+
+    constexpr const_iterator cbegin() const noexcept {
+        return s_.p;
+    }
+
+    constexpr const_iterator cend() const noexcept {
+        return s_.p + s_.n;
+    }
+
+    constexpr const_reverse_iterator crbegin() const noexcept {
+        return const_reverse_iterator(s_.p + s_.n);
+    }
+
+    constexpr const_reverse_iterator crend() const noexcept {
+        return const_reverse_iterator(s_.p);
+    }
+
+    friend constexpr iterator begin(span s) noexcept {
+        return s.begin();
+    }
+
+    friend constexpr iterator end(span s) noexcept {
+        return s.end();
+    }
+
+private:
+    detail::span_store<T, E> s_;
+};
+
+template<class T, std::size_t E>
+constexpr std::size_t span<T, E>::extent;
+
+#ifdef __cpp_deduction_guides
+template<class I, class L>
+span(I*, L) -> span<I>;
+
+template<class T, std::size_t N>
+span(T(&)[N]) -> span<T, N>;
+
+template<class T, std::size_t N>
+span(std::array<T, N>&) -> span<T, N>;
+
+template<class T, std::size_t N>
+span(const std::array<T, N>&) -> span<const T, N>;
+
+template<class R>
+span(R&&) -> span<typename detail::span_data<R>::type>;
+
+template<class T, std::size_t E>
+span(span<T, E>) -> span<T, E>;
+#endif
+
+#ifdef __cpp_lib_byte
+template<class T, std::size_t E>
+inline span<const std::byte, detail::span_bytes<T, E>::value>
+as_bytes(span<T, E> s) noexcept
+{
+    return span<const std::byte, detail::span_bytes<T,
+        E>::value>(reinterpret_cast<const std::byte*>(s.data()),
+            s.size_bytes());
+}
+
+template<class T, std::size_t E>
+inline typename std::enable_if<!std::is_const<T>::value,
+    span<std::byte, detail::span_bytes<T, E>::value> >::type
+as_writable_bytes(span<T, E> s) noexcept
+{
+    return span<std::byte, detail::span_bytes<T,
+        E>::value>(reinterpret_cast<std::byte*>(s.data()), s.size_bytes());
+}
+#endif
+
+} /* boost */
+
+#endif

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/core/swap.hpp

@@ -0,0 +1,70 @@
+// Copyright (C) 2007, 2008 Steven Watanabe, Joseph Gauterin, Niels Dekker
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+// For more information, see http://www.boost.org
+
+
+#ifndef BOOST_CORE_SWAP_HPP
+#define BOOST_CORE_SWAP_HPP
+
+// Note: the implementation of this utility contains various workarounds:
+// - swap_impl is put outside the boost namespace, to avoid infinite
+// recursion (causing stack overflow) when swapping objects of a primitive
+// type.
+// - swap_impl has a using-directive, rather than a using-declaration,
+// because some compilers (including MSVC 7.1, Borland 5.9.3, and
+// Intel 8.1) don't do argument-dependent lookup when it has a
+// using-declaration instead.
+// - boost::swap has two template arguments, instead of one, to
+// avoid ambiguity when swapping objects of a Boost type that does
+// not have its own boost::swap overload.
+
+#include <boost/core/enable_if.hpp>
+#include <boost/config.hpp>
+#if __cplusplus >= 201103L || defined(BOOST_DINKUMWARE_STDLIB)
+#include <utility> // for std::swap (C++11)
+#else
+#include <algorithm> // for std::swap (C++98)
+#endif
+#include <cstddef> // for std::size_t
+
+namespace boost_swap_impl
+{
+  // we can't use type_traits here
+
+  template<class T> struct is_const { enum _vt { value = 0 }; };
+  template<class T> struct is_const<T const> { enum _vt { value = 1 }; };
+
+  template<class T>
+  BOOST_GPU_ENABLED
+  void swap_impl(T& left, T& right)
+  {
+    using namespace std;//use std::swap if argument dependent lookup fails
+    swap(left,right);
+  }
+
+  template<class T, std::size_t N>
+  BOOST_GPU_ENABLED
+  void swap_impl(T (& left)[N], T (& right)[N])
+  {
+    for (std::size_t i = 0; i < N; ++i)
+    {
+      ::boost_swap_impl::swap_impl(left[i], right[i]);
+    }
+  }
+}
+
+namespace boost
+{
+  template<class T1, class T2>
+  BOOST_GPU_ENABLED
+  typename enable_if_c< !boost_swap_impl::is_const<T1>::value && !boost_swap_impl::is_const<T2>::value >::type
+  swap(T1& left, T2& right)
+  {
+    ::boost_swap_impl::swap_impl(left, right);
+  }
+}
+
+#endif

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/core/typeinfo.hpp

@@ -0,0 +1,167 @@
+#ifndef BOOST_CORE_TYPEINFO_HPP_INCLUDED
+#define BOOST_CORE_TYPEINFO_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//  core::typeinfo, BOOST_CORE_TYPEID
+//
+//  Copyright 2007, 2014 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+
+#include <boost/config.hpp>
+
+#if defined( BOOST_NO_TYPEID )
+
+#include <boost/current_function.hpp>
+#include <functional>
+#include <cstring>
+
+namespace boost
+{
+
+namespace core
+{
+
+class typeinfo
+{
+private:
+
+    typeinfo( typeinfo const& );
+    typeinfo& operator=( typeinfo const& );
+
+    char const * name_;
+    void (*lib_id_)();
+
+public:
+
+    typeinfo( char const * name, void (*lib_id)() ): name_( name ), lib_id_( lib_id )
+    {
+    }
+
+    bool operator==( typeinfo const& rhs ) const
+    {
+#if ( defined(_WIN32) || defined(__CYGWIN__) ) && ( defined(__GNUC__) || defined(__clang__) ) && !defined(BOOST_DISABLE_CURRENT_FUNCTION)
+
+        return lib_id_ == rhs.lib_id_? this == &rhs: std::strcmp( name_, rhs.name_ ) == 0;
+
+#else
+
+        return this == &rhs;
+
+#endif
+    }
+
+    bool operator!=( typeinfo const& rhs ) const
+    {
+        return !( *this == rhs );
+    }
+
+    bool before( typeinfo const& rhs ) const
+    {
+#if ( defined(_WIN32) || defined(__CYGWIN__) ) && ( defined(__GNUC__) || defined(__clang__) ) && !defined(BOOST_DISABLE_CURRENT_FUNCTION)
+
+        return lib_id_ == rhs.lib_id_? std::less< typeinfo const* >()( this, &rhs ): std::strcmp( name_, rhs.name_ ) < 0;
+
+#else
+
+        return std::less< typeinfo const* >()( this, &rhs );
+
+#endif
+    }
+
+    char const* name() const
+    {
+        return name_;
+    }
+};
+
+inline char const * demangled_name( core::typeinfo const & ti )
+{
+    return ti.name();
+}
+
+} // namespace core
+
+namespace detail
+{
+
+template<class T> struct BOOST_SYMBOL_VISIBLE core_typeid_
+{
+    static boost::core::typeinfo ti_;
+
+    static char const * name()
+    {
+        return BOOST_CURRENT_FUNCTION;
+    }
+};
+
+BOOST_SYMBOL_VISIBLE inline void core_typeid_lib_id()
+{
+}
+
+template<class T> boost::core::typeinfo core_typeid_< T >::ti_( core_typeid_< T >::name(), &core_typeid_lib_id );
+
+template<class T> struct core_typeid_< T & >: core_typeid_< T >
+{
+};
+
+template<class T> struct core_typeid_< T const >: core_typeid_< T >
+{
+};
+
+template<class T> struct core_typeid_< T volatile >: core_typeid_< T >
+{
+};
+
+template<class T> struct core_typeid_< T const volatile >: core_typeid_< T >
+{
+};
+
+} // namespace detail
+
+} // namespace boost
+
+#define BOOST_CORE_TYPEID(T) (boost::detail::core_typeid_<T>::ti_)
+
+#else
+
+#include <boost/core/demangle.hpp>
+#include <typeinfo>
+
+namespace boost
+{
+
+namespace core
+{
+
+#if defined( BOOST_NO_STD_TYPEINFO )
+
+typedef ::type_info typeinfo;
+
+#else
+
+typedef std::type_info typeinfo;
+
+#endif
+
+inline std::string demangled_name( core::typeinfo const & ti )
+{
+    return core::demangle( ti.name() );
+}
+
+} // namespace core
+
+} // namespace boost
+
+#define BOOST_CORE_TYPEID(T) typeid(T)
+
+#endif
+
+#endif  // #ifndef BOOST_CORE_TYPEINFO_HPP_INCLUDED

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/core/uncaught_exceptions.hpp

@@ -0,0 +1,155 @@
+/*
+ *          Copyright Andrey Semashev 2018 - 2020.
+ * Distributed under the Boost Software License, Version 1.0.
+ *    (See accompanying file LICENSE_1_0.txt or copy at
+ *          https://www.boost.org/LICENSE_1_0.txt)
+ */
+/*!
+ * \file   uncaught_exceptions.hpp
+ * \author Andrey Semashev
+ * \date   2018-11-10
+ *
+ * \brief  This header provides an `uncaught_exceptions` function implementation, which was introduced in C++17.
+ *
+ * The code in this file is based on the implementation by Evgeny Panasyuk:
+ *
+ * https://github.com/panaseleus/stack_unwinding/blob/master/boost/exception/uncaught_exception_count.hpp
+ */
+
+#ifndef BOOST_CORE_UNCAUGHT_EXCEPTIONS_HPP_INCLUDED_
+#define BOOST_CORE_UNCAUGHT_EXCEPTIONS_HPP_INCLUDED_
+
+#include <exception>
+#include <boost/config.hpp>
+
+#if defined(BOOST_HAS_PRAGMA_ONCE)
+#pragma once
+#endif
+
+#if (defined(__cpp_lib_uncaught_exceptions) && __cpp_lib_uncaught_exceptions >= 201411)
+#if defined(__APPLE__)
+#include <Availability.h>
+// Apple systems only support std::uncaught_exceptions starting with specific versions:
+// - Mac OS >= 10.12
+// - iOS >= 10.0
+// - tvOS >= 10.0
+// - watchOS >= 3.0
+// https://github.com/boostorg/core/issues/80
+#if (defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && __MAC_OS_X_VERSION_MIN_REQUIRED >= 101200) || \
+    (defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && __IPHONE_OS_VERSION_MIN_REQUIRED >= 100000)
+#define BOOST_CORE_HAS_UNCAUGHT_EXCEPTIONS
+#endif
+#else
+#define BOOST_CORE_HAS_UNCAUGHT_EXCEPTIONS
+#endif // defined(__APPLE__)
+// Visual Studio 14.0 supports N4152 std::uncaught_exceptions() but doesn't define __cpp_lib_uncaught_exceptions
+#elif (defined(_MSC_VER) && _MSC_VER >= 1900)
+#define BOOST_CORE_HAS_UNCAUGHT_EXCEPTIONS
+#endif
+
+#if !defined(BOOST_CORE_HAS_UNCAUGHT_EXCEPTIONS)
+
+// cxxabi.h availability macro
+#if defined(__has_include) && (!defined(BOOST_GCC) || (__GNUC__ >= 5))
+#   if __has_include(<cxxabi.h>)
+#       define BOOST_CORE_HAS_CXXABI_H
+#   endif
+#elif defined(__GLIBCXX__) || defined(__GLIBCPP__)
+#   define BOOST_CORE_HAS_CXXABI_H
+#endif
+
+#if defined(BOOST_CORE_HAS_CXXABI_H)
+// MinGW GCC 4.4 seem to not work the same way the newer GCC versions do. As a result, __cxa_get_globals based implementation will always return 0.
+// Just disable it for now and fall back to std::uncaught_exception().
+// On AIX, xlclang++ does have cxxabi.h but doesn't have __cxa_get_globals (https://github.com/boostorg/core/issues/78).
+#if !( \
+        (defined(__MINGW32__) && (defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) < 405)) || \
+        defined(__ibmxl__) \
+    )
+#include <cxxabi.h>
+#include <cstring>
+#define BOOST_CORE_HAS_CXA_GET_GLOBALS
+// At least on MinGW and Linux, only GCC since 4.7 declares __cxa_get_globals() in cxxabi.h. Older versions of GCC do not expose this function but it's there.
+// On OpenBSD, it seems, the declaration is also missing.
+// Note that at least on FreeBSD 11, cxxabi.h declares __cxa_get_globals with a different exception specification, so we can't declare the function unconditionally.
+// On Linux with clang and libc++ and on OS X, there is a version of cxxabi.h from libc++abi that doesn't declare __cxa_get_globals, but provides __cxa_uncaught_exceptions.
+// The function only appeared in version _LIBCPPABI_VERSION >= 1002 of the library. Unfortunately, there are linking errors about undefined reference to __cxa_uncaught_exceptions
+// on Ubuntu Trusty and OS X, so we avoid using it and forward-declare __cxa_get_globals instead.
+// On QNX SDP 7.0 (QCC 5.4.0), there are multiple cxxabi.h, one from glibcxx from gcc and another from libc++abi from LLVM. Which one is included will be determined by the qcc
+// command line arguments (-V and/or -Y; http://www.qnx.com/developers/docs/7.0.0/#com.qnx.doc.neutrino.utilities/topic/q/qcc.html). The LLVM libc++abi is missing the declaration
+// of __cxa_get_globals but it is also patched by QNX developers to not define _LIBCPPABI_VERSION. Older QNX SDP versions, up to and including 6.6, don't provide LLVM and libc++abi.
+// See https://github.com/boostorg/core/issues/59.
+#if !defined(__FreeBSD__) && \
+    ( \
+        (defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) < 407) || \
+        defined(__OpenBSD__) || \
+        (defined(__QNXNTO__) && !defined(__GLIBCXX__) && !defined(__GLIBCPP__)) || \
+        defined(_LIBCPPABI_VERSION) \
+    )
+namespace __cxxabiv1 {
+struct __cxa_eh_globals;
+#if defined(__OpenBSD__)
+extern "C" __cxa_eh_globals* __cxa_get_globals();
+#else
+extern "C" __cxa_eh_globals* __cxa_get_globals() BOOST_NOEXCEPT_OR_NOTHROW __attribute__((__const__));
+#endif
+} // namespace __cxxabiv1
+#endif
+#endif
+#endif // defined(BOOST_CORE_HAS_CXXABI_H)
+
+#if defined(_MSC_VER) && _MSC_VER >= 1400
+#include <cstring>
+#define BOOST_CORE_HAS_GETPTD
+namespace boost {
+namespace core {
+namespace detail {
+extern "C" void* _getptd();
+} // namespace detail
+} // namespace core
+} // namespace boost
+#endif // defined(_MSC_VER) && _MSC_VER >= 1400
+
+#endif // !defined(BOOST_CORE_HAS_UNCAUGHT_EXCEPTIONS)
+
+#if !defined(BOOST_CORE_HAS_UNCAUGHT_EXCEPTIONS) && !defined(BOOST_CORE_HAS_CXA_GET_GLOBALS) && !defined(BOOST_CORE_HAS_GETPTD)
+//! This macro is defined when `uncaught_exceptions` is not guaranteed to return values greater than 1 if multiple exceptions are pending
+#define BOOST_CORE_UNCAUGHT_EXCEPTIONS_EMULATED
+#endif
+
+namespace boost {
+
+namespace core {
+
+//! Returns the number of currently pending exceptions
+inline unsigned int uncaught_exceptions() BOOST_NOEXCEPT
+{
+#if defined(BOOST_CORE_HAS_UNCAUGHT_EXCEPTIONS)
+    // C++17 implementation
+    return static_cast< unsigned int >(std::uncaught_exceptions());
+#elif defined(BOOST_CORE_HAS_CXA_GET_GLOBALS)
+    // Tested on {clang 3.2,GCC 3.5.6,GCC 4.1.2,GCC 4.4.6,GCC 4.4.7}x{x32,x64}
+    unsigned int count;
+    std::memcpy(&count, reinterpret_cast< const unsigned char* >(::abi::__cxa_get_globals()) + sizeof(void*), sizeof(count)); // __cxa_eh_globals::uncaughtExceptions, x32 offset - 0x4, x64 - 0x8
+    return count;
+#elif defined(BOOST_CORE_HAS_GETPTD)
+    // MSVC specific. Tested on {MSVC2005SP1,MSVC2008SP1,MSVC2010SP1,MSVC2012}x{x32,x64}.
+    unsigned int count;
+    std::memcpy(&count, static_cast< const unsigned char* >(boost::core::detail::_getptd()) + (sizeof(void*) == 8u ? 0x100 : 0x90), sizeof(count)); // _tiddata::_ProcessingThrow, x32 offset - 0x90, x64 - 0x100
+    return count;
+#else
+    // Portable C++03 implementation. Does not allow to detect multiple nested exceptions.
+    return static_cast< unsigned int >(std::uncaught_exception());
+#endif
+}
+
+} // namespace core
+
+} // namespace boost
+
+#undef BOOST_CORE_HAS_CXXABI_H
+#undef BOOST_CORE_HAS_CXA_GET_GLOBALS
+#undef BOOST_CORE_HAS_UNCAUGHT_EXCEPTIONS
+#undef BOOST_CORE_HAS_GETPTD
+
+#endif // BOOST_CORE_UNCAUGHT_EXCEPTIONS_HPP_INCLUDED_

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/core/underlying_type.hpp

@@ -0,0 +1,79 @@
+//  underlying_type.hpp  ---------------------------------------------------------//
+
+//  Copyright Beman Dawes, 2009
+//  Copyright (C) 2011-2012 Vicente J. Botet Escriba
+//  Copyright (C) 2012 Anthony Williams
+//  Copyright (C) 2014 Andrey Semashev
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+#ifndef BOOST_CORE_UNDERLYING_TYPE_HPP
+#define BOOST_CORE_UNDERLYING_TYPE_HPP
+
+#include <boost/config.hpp>
+
+// GCC 4.7 and later seem to provide std::underlying_type
+#if !defined(BOOST_NO_CXX11_HDR_TYPE_TRAITS) || (defined(BOOST_GCC) && BOOST_GCC >= 40700 && defined(__GXX_EXPERIMENTAL_CXX0X__))
+#include <type_traits>
+#define BOOST_DETAIL_HAS_STD_UNDERLYING_TYPE
+#endif
+
+#ifdef BOOST_HAS_PRAGMA_ONCE
+#pragma once
+#endif
+
+namespace boost {
+
+namespace detail {
+
+template< typename EnumType, typename Void = void >
+struct underlying_type_impl;
+
+#if defined(BOOST_NO_CXX11_SCOPED_ENUMS)
+
+// Support for boost/core/scoped_enum.hpp
+template< typename EnumType >
+struct underlying_type_impl< EnumType, typename EnumType::is_boost_scoped_enum_tag >
+{
+    /**
+     * The member typedef type names the underlying type of EnumType. It is EnumType::underlying_type when the EnumType is an emulated scoped enum,
+     */
+    typedef typename EnumType::underlying_type type;
+};
+
+#endif
+
+#if defined(BOOST_DETAIL_HAS_STD_UNDERLYING_TYPE)
+
+template< typename EnumType, typename Void >
+struct underlying_type_impl
+{
+    typedef typename std::underlying_type< EnumType >::type type;
+};
+
+#endif
+
+} // namespace detail
+
+#if !defined(BOOST_NO_CXX11_SCOPED_ENUMS) && !defined(BOOST_DETAIL_HAS_STD_UNDERLYING_TYPE)
+#define BOOST_NO_UNDERLYING_TYPE
+#endif
+
+/**
+ * Meta-function to get the underlying type of a scoped enum.
+ *
+ * Requires EnumType must be an enum type or the emulation of a scoped enum.
+ * If BOOST_NO_UNDERLYING_TYPE is defined, the implementation will not be able
+ * to deduce the underlying type of enums. The user is expected to specialize
+ * this trait in this case.
+ */
+template< typename EnumType >
+struct underlying_type :
+    public detail::underlying_type_impl< EnumType >
+{
+};
+
+} // namespace boost
+
+#endif  // BOOST_CORE_UNDERLYING_TYPE_HPP

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/core/use_default.hpp

@@ -0,0 +1,17 @@
+/*
+Copyright 2019 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#ifndef BOOST_CORE_USE_DEFAULT_HPP
+#define BOOST_CORE_USE_DEFAULT_HPP
+
+namespace boost {
+
+struct use_default { };
+
+} /* boost */
+
+#endif

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/core/verbose_terminate_handler.hpp

@@ -0,0 +1,88 @@
+#ifndef BOOST_CORE_VERBOSE_TERMINATE_HANDLER_HPP_INCLUDED
+#define BOOST_CORE_VERBOSE_TERMINATE_HANDLER_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//  Copyright 2022 Peter Dimov
+//  Distributed under the Boost Software License, Version 1.0.
+//  https://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/core/demangle.hpp>
+#include <boost/throw_exception.hpp>
+#include <boost/config.hpp>
+#include <exception>
+#include <typeinfo>
+#include <cstdlib>
+#include <cstdio>
+
+namespace boost
+{
+namespace core
+{
+
+BOOST_NORETURN inline void verbose_terminate_handler()
+{
+    std::set_terminate( 0 );
+
+#if defined(BOOST_NO_EXCEPTIONS)
+
+    std::fputs( "std::terminate called with exceptions disabled\n", stderr );
+
+#else
+
+    try
+    {
+        throw;
+    }
+    catch( std::exception const& x )
+    {
+#if defined(BOOST_NO_RTTI)
+
+        char const * typeid_name = "unknown (RTTI is disabled)";
+
+#else
+
+        char const * typeid_name = typeid( x ).name();
+
+        boost::core::scoped_demangled_name typeid_demangled_name( typeid_name );
+
+        if( typeid_demangled_name.get() != 0 )
+        {
+            typeid_name = typeid_demangled_name.get();
+        }
+
+#endif
+
+        boost::source_location loc = boost::get_throw_location( x );
+
+        std::fprintf( stderr,
+            "std::terminate called after throwing an exception:\n\n"
+            "      type: %s\n"
+            "    what(): %s\n"
+            "  location: %s:%lu:%lu in function '%s'\n",
+
+            typeid_name,
+            x.what(),
+            loc.file_name(), static_cast<unsigned long>( loc.line() ),
+            static_cast<unsigned long>( loc.column() ), loc.function_name()
+        );
+    }
+    catch( ... )
+    {
+        std::fputs( "std::terminate called after throwing an unknown exception\n", stderr );
+    }
+
+#endif
+
+    std::fflush( stdout );
+    std::abort();
+}
+
+} // namespace core
+} // namespace boost
+
+#endif  // #ifndef BOOST_CORE_VERBOSE_TERMINATE_HANDLER_HPP_INCLUDED

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/detail/iterator.hpp

@@ -0,0 +1,43 @@
+// (C) Copyright David Abrahams 2002.
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef ITERATOR_DWA122600_HPP_
+#define ITERATOR_DWA122600_HPP_
+
+// This header is obsolete and deprecated.
+
+#include <boost/config/header_deprecated.hpp>
+
+BOOST_HEADER_DEPRECATED("<iterator>")
+
+#include <iterator>
+#if defined(__SUNPRO_CC) && (defined(__SGI_STL_PORT) || defined(_STLPORT_VERSION))
+#include <cstddef>
+#endif
+
+namespace boost
+{
+
+namespace detail
+{
+
+using std::iterator_traits;
+using std::distance;
+
+#if defined(__SUNPRO_CC) && (defined(__SGI_STL_PORT) || defined(_STLPORT_VERSION))
+// std::distance from stlport with Oracle compiler 12.4 and 12.5 fails to deduce template parameters
+// when one of the arguments is an array and the other one is a pointer.
+template< typename T, std::size_t N >
+inline typename std::iterator_traits< T* >::difference_type distance(T (&left)[N], T* right)
+{
+    return std::distance(static_cast< T* >(left), right);
+}
+#endif
+
+} // namespace detail
+
+} // namespace boost
+
+#endif // ITERATOR_DWA122600_HPP_

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/detail/lightweight_test.hpp

@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2014 Glen Fernandes
+ *
+ * Distributed under the Boost Software License, Version 1.0. (See
+ * accompanying file LICENSE_1_0.txt or copy at
+ * http://www.boost.org/LICENSE_1_0.txt)
+ */
+
+#ifndef BOOST_DETAIL_LIGHTWEIGHT_TEST_HPP
+#define BOOST_DETAIL_LIGHTWEIGHT_TEST_HPP
+
+// The header file at this path is deprecated;
+// use boost/core/lightweight_test.hpp instead.
+
+#include <boost/core/lightweight_test.hpp>
+
+#endif

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/detail/no_exceptions_support.hpp

@@ -0,0 +1,21 @@
+/*
+ * Copyright (c) 2014 Glen Fernandes
+ *
+ * Distributed under the Boost Software License, Version 1.0. (See
+ * accompanying file LICENSE_1_0.txt or copy at
+ * http://www.boost.org/LICENSE_1_0.txt)
+ */
+
+#ifndef BOOST_DETAIL_NO_EXCEPTIONS_SUPPORT_HPP
+#define BOOST_DETAIL_NO_EXCEPTIONS_SUPPORT_HPP
+
+// The header file at this path is deprecated;
+// use boost/core/no_exceptions_support.hpp instead.
+
+#include <boost/config/header_deprecated.hpp>
+
+BOOST_HEADER_DEPRECATED("<boost/core/no_exceptions_support.hpp>")
+
+#include <boost/core/no_exceptions_support.hpp>
+
+#endif

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/detail/scoped_enum_emulation.hpp

@@ -0,0 +1,21 @@
+/*
+ * Copyright (c) 2014 Andrey Semashev
+ *
+ * Distributed under the Boost Software License, Version 1.0. (See
+ * accompanying file LICENSE_1_0.txt or copy at
+ * http://www.boost.org/LICENSE_1_0.txt)
+ */
+
+#ifndef BOOST_DETAIL_SCOPED_ENUM_EMULATION_HPP
+#define BOOST_DETAIL_SCOPED_ENUM_EMULATION_HPP
+
+// The header file at this path is deprecated;
+// use boost/core/scoped_enum.hpp instead.
+
+#include <boost/config/header_deprecated.hpp>
+
+BOOST_HEADER_DEPRECATED("<boost/core/scoped_enum.hpp>")
+
+#include <boost/core/scoped_enum.hpp>
+
+#endif

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/detail/sp_typeinfo.hpp

@@ -0,0 +1,39 @@
+#ifndef BOOST_DETAIL_SP_TYPEINFO_HPP_INCLUDED
+#define BOOST_DETAIL_SP_TYPEINFO_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//  detail/sp_typeinfo.hpp
+//
+//  Deprecated, please use boost/core/typeinfo.hpp
+//
+//  Copyright 2007 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+
+#include <boost/core/typeinfo.hpp>
+#include <boost/config/header_deprecated.hpp>
+
+BOOST_HEADER_DEPRECATED( "<boost/core/typeinfo.hpp>" )
+
+namespace boost
+{
+
+namespace detail
+{
+
+typedef boost::core::typeinfo sp_typeinfo;
+
+} // namespace detail
+
+} // namespace boost
+
+#define BOOST_SP_TYPEID(T) BOOST_CORE_TYPEID(T)
+
+#endif  // #ifndef BOOST_DETAIL_SP_TYPEINFO_HPP_INCLUDED

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/get_pointer.hpp

@@ -0,0 +1,76 @@
+// Copyright Peter Dimov and David Abrahams 2002.
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+#ifndef GET_POINTER_DWA20021219_HPP
+#define GET_POINTER_DWA20021219_HPP
+
+#include <boost/config.hpp>
+
+// In order to avoid circular dependencies with Boost.TR1
+// we make sure that our include of <memory> doesn't try to
+// pull in the TR1 headers: that's why we use this header 
+// rather than including <memory> directly:
+#include <boost/config/no_tr1/memory.hpp>  // std::auto_ptr
+
+namespace boost { 
+
+// get_pointer(p) extracts a ->* capable pointer from p
+
+template<class T> T * get_pointer(T * p)
+{
+    return p;
+}
+
+// get_pointer(shared_ptr<T> const & p) has been moved to shared_ptr.hpp
+
+#if !defined( BOOST_NO_AUTO_PTR )
+
+#if defined( __GNUC__ ) && (defined( __GXX_EXPERIMENTAL_CXX0X__ ) || (__cplusplus >= 201103L))
+#if defined( BOOST_GCC )
+#if BOOST_GCC >= 40600
+#define BOOST_CORE_DETAIL_DISABLE_LIBSTDCXX_DEPRECATED_WARNINGS
+#endif // BOOST_GCC >= 40600
+#elif defined( __clang__ ) && defined( __has_warning )
+#if __has_warning("-Wdeprecated-declarations")
+#define BOOST_CORE_DETAIL_DISABLE_LIBSTDCXX_DEPRECATED_WARNINGS
+#endif // __has_warning("-Wdeprecated-declarations")
+#endif
+#endif // defined( __GNUC__ ) && (defined( __GXX_EXPERIMENTAL_CXX0X__ ) || (__cplusplus >= 201103L))
+
+#if defined( BOOST_CORE_DETAIL_DISABLE_LIBSTDCXX_DEPRECATED_WARNINGS )
+// Disable libstdc++ warnings about std::auto_ptr being deprecated in C++11 mode
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
+#define BOOST_CORE_DETAIL_DISABLED_DEPRECATED_WARNINGS
+#endif
+
+template<class T> T * get_pointer(std::auto_ptr<T> const& p)
+{
+    return p.get();
+}
+
+#if defined( BOOST_CORE_DETAIL_DISABLE_LIBSTDCXX_DEPRECATED_WARNINGS )
+#pragma GCC diagnostic pop
+#undef BOOST_CORE_DETAIL_DISABLE_LIBSTDCXX_DEPRECATED_WARNINGS
+#endif
+
+#endif // !defined( BOOST_NO_AUTO_PTR )
+
+#if !defined( BOOST_NO_CXX11_SMART_PTR )
+
+template<class T> T * get_pointer( std::unique_ptr<T> const& p )
+{
+    return p.get();
+}
+
+template<class T> T * get_pointer( std::shared_ptr<T> const& p )
+{
+    return p.get();
+}
+
+#endif
+
+} // namespace boost
+
+#endif // GET_POINTER_DWA20021219_HPP

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/iterator.hpp

@@ -0,0 +1,22 @@
+//  (C) Copyright Beman Dawes 2000. Distributed under the Boost
+//  Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_ITERATOR_HPP
+#define BOOST_ITERATOR_HPP
+
+#include <boost/config/header_deprecated.hpp>
+
+BOOST_HEADER_DEPRECATED("<iterator>")
+
+#include <iterator>
+#include <cstddef>           // std::ptrdiff_t
+
+namespace boost
+{
+
+using std::iterator;
+
+} // namespace boost
+
+#endif // BOOST_ITERATOR_HPP

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/non_type.hpp

@@ -0,0 +1,27 @@
+// -------------------------------------
+//
+//           (C) Copyright Gennaro Prota 2003.
+//
+// Distributed under the Boost Software License, Version 1.0.
+//    (See accompanying file LICENSE_1_0.txt or copy at
+//          http://www.boost.org/LICENSE_1_0.txt)
+//
+// ------------------------------------------------------
+
+#ifndef BOOST_NON_TYPE_HPP_GP_20030417
+#define BOOST_NON_TYPE_HPP_GP_20030417
+
+
+namespace boost {
+
+  // Just a simple "envelope" for non-type template parameters. Useful
+  // to work around some MSVC deficiencies.
+
+ template <typename T, T n>
+ struct non_type { };
+
+
+}
+
+
+#endif // include guard

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/noncopyable.hpp

@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2014 Glen Fernandes
+ *
+ * Distributed under the Boost Software License, Version 1.0. (See
+ * accompanying file LICENSE_1_0.txt or copy at
+ * http://www.boost.org/LICENSE_1_0.txt)
+ */
+
+#ifndef BOOST_NONCOPYABLE_HPP
+#define BOOST_NONCOPYABLE_HPP
+
+// The header file at this path is deprecated;
+// use boost/core/noncopyable.hpp instead.
+
+#include <boost/core/noncopyable.hpp>
+
+#endif

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/ref.hpp

@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2014 Glen Fernandes
+ *
+ * Distributed under the Boost Software License, Version 1.0. (See
+ * accompanying file LICENSE_1_0.txt or copy at
+ * http://www.boost.org/LICENSE_1_0.txt)
+ */
+
+#ifndef BOOST_REF_HPP
+#define BOOST_REF_HPP
+
+// The header file at this path is deprecated;
+// use boost/core/ref.hpp instead.
+
+#include <boost/core/ref.hpp>
+
+#endif

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/swap.hpp

@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2014 Glen Fernandes
+ *
+ * Distributed under the Boost Software License, Version 1.0. (See
+ * accompanying file LICENSE_1_0.txt or copy at
+ * http://www.boost.org/LICENSE_1_0.txt)
+ */
+
+#ifndef BOOST_SWAP_HPP
+#define BOOST_SWAP_HPP
+
+// The header file at this path is deprecated;
+// use boost/core/swap.hpp instead.
+
+#include <boost/core/swap.hpp>
+
+#endif

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/type.hpp

@@ -0,0 +1,18 @@
+// (C) Copyright David Abrahams 2001.
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_TYPE_DWA20010120_HPP
+# define BOOST_TYPE_DWA20010120_HPP
+
+namespace boost {
+
+  // Just a simple "type envelope". Useful in various contexts, mostly to work
+  // around some MSVC deficiencies.
+  template <class T>
+  struct type {};
+
+}
+
+#endif // BOOST_TYPE_DWA20010120_HPP

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/utility/addressof.hpp

@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2014 Glen Fernandes
+ *
+ * Distributed under the Boost Software License, Version 1.0. (See
+ * accompanying file LICENSE_1_0.txt or copy at
+ * http://www.boost.org/LICENSE_1_0.txt)
+ */
+
+#ifndef BOOST_UTILITY_ADDRESSOF_HPP
+#define BOOST_UTILITY_ADDRESSOF_HPP
+
+// The header file at this path is deprecated;
+// use boost/core/addressof.hpp instead.
+
+#include <boost/core/addressof.hpp>
+
+#endif

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/utility/enable_if.hpp

@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2014 Glen Fernandes
+ *
+ * Distributed under the Boost Software License, Version 1.0. (See
+ * accompanying file LICENSE_1_0.txt or copy at
+ * http://www.boost.org/LICENSE_1_0.txt)
+ */
+
+#ifndef BOOST_UTILITY_ENABLE_IF_HPP
+#define BOOST_UTILITY_ENABLE_IF_HPP
+
+// The header file at this path is deprecated;
+// use boost/core/enable_if.hpp instead.
+
+#include <boost/core/enable_if.hpp>
+
+#endif

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/utility/explicit_operator_bool.hpp

@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2014 Glen Fernandes
+ *
+ * Distributed under the Boost Software License, Version 1.0. (See
+ * accompanying file LICENSE_1_0.txt or copy at
+ * http://www.boost.org/LICENSE_1_0.txt)
+ */
+
+#ifndef BOOST_UTILITY_EXPLICIT_OPERATOR_BOOL_HPP
+#define BOOST_UTILITY_EXPLICIT_OPERATOR_BOOL_HPP
+
+// The header file at this path is deprecated;
+// use boost/core/explicit_operator_bool.hpp instead.
+
+#include <boost/core/explicit_operator_bool.hpp>
+
+#endif

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/utility/swap.hpp

@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2014 Glen Fernandes
+ *
+ * Distributed under the Boost Software License, Version 1.0. (See
+ * accompanying file LICENSE_1_0.txt or copy at
+ * http://www.boost.org/LICENSE_1_0.txt)
+ */
+
+#ifndef BOOST_UTILITY_SWAP_HPP
+#define BOOST_UTILITY_SWAP_HPP
+
+// The header file at this path is deprecated;
+// use boost/core/swap.hpp instead.
+
+#include <boost/core/swap.hpp>
+
+#endif

externals/vcpkg/buildtrees/boost-core/src/ost-1.79.0-03bf202b15.clean/include/boost/visit_each.hpp

@@ -0,0 +1,27 @@
+// Boost.Signals library
+
+// Copyright Douglas Gregor 2001-2003. Use, modification and
+// distribution is subject to the Boost Software License, Version
+// 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+
+// For more information, see http://www.boost.org/libs/signals
+
+#ifndef BOOST_VISIT_EACH_HPP
+#define BOOST_VISIT_EACH_HPP
+
+namespace boost {
+  template<typename Visitor, typename T>
+  inline void visit_each(Visitor& visitor, const T& t, long)
+  {
+    visitor(t);
+  }
+
+  template<typename Visitor, typename T>
+  inline void visit_each(Visitor& visitor, const T& t)
+  {
+    visit_each(visitor, t, 0);
+  }
+}
+
+#endif // BOOST_VISIT_EACH_HPP