Initial commit

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.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
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+*.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
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+*.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
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+*.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
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+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-variant2/src/ost-1.79.0-3093c57029.clean/.github/workflows/ci.yml

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+name: CI
+
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+      - develop
+      - feature/**
+
+env:
+  UBSAN_OPTIONS: print_stacktrace=1
+
+jobs:
+  posix:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - toolset: gcc-4.8
+            cxxstd: "03,11"
+            os: ubuntu-18.04
+            install: g++-4.8
+          - toolset: gcc-5
+            cxxstd: "03,11,14,1z"
+            os: ubuntu-18.04
+            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
+          - 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-20.04
+          - toolset: gcc-10
+            cxxstd: "03,11,14,17,2a"
+            os: ubuntu-20.04
+            install: g++-10
+          - toolset: gcc-11
+            cxxstd: "03,11,14,17,2a"
+            os: ubuntu-20.04
+            install: g++-11
+          - 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
+          - toolset: clang
+            compiler: clang++-8
+            cxxstd: "03,11,14,17"
+            os: ubuntu-20.04
+            install: clang-8
+          - toolset: clang
+            compiler: clang++-9
+            cxxstd: "03,11,14,17,2a"
+            os: ubuntu-20.04
+            install: clang-9
+          - toolset: clang
+            compiler: clang++-10
+            cxxstd: "03,11,14,17,2a"
+            os: ubuntu-20.04
+            install: clang-10
+          - toolset: clang
+            compiler: clang++-11
+            cxxstd: "03,11,14,17,2a"
+            os: ubuntu-20.04
+            install: clang-11
+          - toolset: clang
+            compiler: clang++-12
+            cxxstd: "03,11,14,17,2a"
+            os: ubuntu-20.04
+            install: clang-12
+          - toolset: clang
+            cxxstd: "03,11,14,17,2a"
+            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
+          ./bootstrap.sh
+          ./b2 -d0 headers
+
+      - name: Create user-config.jam
+        if: matrix.compiler
+        run: |
+          echo "using ${{matrix.toolset}} : : ${{matrix.compiler}} ;" > ~/user-config.jam
+
+      - name: Run tests
+        run: |
+          cd ../boost-root
+          ./b2 -j3 libs/$LIBRARY/test toolset=${{matrix.toolset}} cxxstd=${{matrix.cxxstd}} variant=debug,release
+
+  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,latest"
+            addrmd: 32,64
+            os: windows-2019
+          - toolset: msvc-14.3
+            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: ${{matrix.os}}
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Setup Boost
+        shell: cmd
+        run: |
+          echo GITHUB_REPOSITORY: %GITHUB_REPOSITORY%
+          for /f %%i in ("%GITHUB_REPOSITORY%") do set LIBRARY=%%~nxi
+          echo LIBRARY: %LIBRARY%
+          echo LIBRARY=%LIBRARY%>>%GITHUB_ENV%
+          echo GITHUB_BASE_REF: %GITHUB_BASE_REF%
+          echo GITHUB_REF: %GITHUB_REF%
+          if "%GITHUB_BASE_REF%" == "" set GITHUB_BASE_REF=%GITHUB_REF%
+          set BOOST_BRANCH=develop
+          for /f %%i in ("%GITHUB_BASE_REF%") do if "%%~nxi" == "master" set BOOST_BRANCH=master
+          echo BOOST_BRANCH: %BOOST_BRANCH%
+          cd ..
+          git clone -b %BOOST_BRANCH% --depth 1 https://github.com/boostorg/boost.git boost-root
+          cd boost-root
+          xcopy /s /e /q %GITHUB_WORKSPACE% libs\%LIBRARY%\
+          git submodule update --init tools/boostdep
+          python tools/boostdep/depinst/depinst.py --git_args "--jobs 3" %LIBRARY%
+          cmd /c bootstrap
+          b2 -d0 headers
+
+      - name: Run tests
+        shell: cmd
+        run: |
+          cd ../boost-root
+          b2 -j3 libs/%LIBRARY%/test toolset=${{matrix.toolset}} cxxstd=${{matrix.cxxstd}} address-model=${{matrix.addrmd}} variant=debug,release
+
+  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-variant2/src/ost-1.79.0-3093c57029.clean/.travis.yml

@@ -0,0 +1,339 @@
+# 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)
+
+language: cpp
+
+dist: xenial
+
+branches:
+  only:
+    - master
+    - develop
+    - /feature\/.*/
+
+env:
+  matrix:
+    - BOGUS_JOB=true
+
+matrix:
+
+  exclude:
+    - env: BOGUS_JOB=true
+
+  include:
+    - os: linux
+      compiler: g++-4.8
+      env: TOOLSET=gcc COMPILER=g++-4.8 CXXSTD=11
+      addons:
+        apt:
+          packages:
+            - g++-4.8
+          sources:
+            - ubuntu-toolchain-r-test
+
+    - os: linux
+      compiler: g++-4.9
+      env: TOOLSET=gcc COMPILER=g++-4.9 CXXSTD=11
+      addons:
+        apt:
+          packages:
+            - g++-4.9
+          sources:
+            - ubuntu-toolchain-r-test
+
+    - os: linux
+      compiler: g++-5
+      env: TOOLSET=gcc COMPILER=g++-5 CXXSTD=11,14,1z
+      addons:
+        apt:
+          packages:
+            - g++-5
+          sources:
+            - ubuntu-toolchain-r-test
+
+    - os: linux
+      compiler: g++-6
+      env: TOOLSET=gcc COMPILER=g++-6 CXXSTD=11,14,1z
+      addons:
+        apt:
+          packages:
+            - g++-6
+          sources:
+            - ubuntu-toolchain-r-test
+
+    - os: linux
+      compiler: g++-7
+      env: TOOLSET=gcc COMPILER=g++-7 CXXSTD=11,14,17
+      addons:
+        apt:
+          packages:
+            - g++-7
+          sources:
+            - ubuntu-toolchain-r-test
+
+    - os: linux
+      compiler: g++-8
+      env: TOOLSET=gcc COMPILER=g++-8 CXXSTD=11,14,17,2a
+      addons:
+        apt:
+          packages:
+            - g++-8
+          sources:
+            - ubuntu-toolchain-r-test
+
+    - os: linux
+      compiler: g++-9
+      env: TOOLSET=gcc COMPILER=g++-9 CXXSTD=11,14,17,2a
+      addons:
+        apt:
+          packages:
+            - g++-9
+          sources:
+            - ubuntu-toolchain-r-test
+
+    - os: linux
+      dist: bionic
+      compiler: g++-10
+      env: UBSAN=1 TOOLSET=gcc COMPILER=g++-10 CXXSTD=11,14,17,2a UBSAN_OPTIONS=print_stacktrace=1 LINKFLAGS=-fuse-ld=gold
+      addons:
+        apt:
+          packages:
+            - g++-10
+          sources:
+            - ubuntu-toolchain-r-test
+
+    - os: linux
+      compiler: clang++-3.5
+      env: TOOLSET=clang COMPILER=clang++-3.5 CXXSTD=11,14,1z
+      addons:
+        apt:
+          packages:
+            - clang-3.5
+            - libstdc++-4.9-dev
+          sources:
+            - ubuntu-toolchain-r-test
+
+    - os: linux
+      compiler: clang++-3.6
+      env: TOOLSET=clang COMPILER=clang++-3.6 CXXSTD=11,14,1z
+      addons:
+        apt:
+          packages:
+            - clang-3.6
+          sources:
+            - ubuntu-toolchain-r-test
+
+    - os: linux
+      compiler: clang++-3.7
+      env: TOOLSET=clang COMPILER=clang++-3.7 CXXSTD=11,14,1z
+      addons:
+        apt:
+          packages:
+            - clang-3.7
+          sources:
+            - ubuntu-toolchain-r-test
+
+    - os: linux
+      compiler: clang++-3.8
+      env: TOOLSET=clang COMPILER=clang++-3.8 CXXSTD=11,14,1z
+      addons:
+        apt:
+          packages:
+            - clang-3.8
+          sources:
+            - ubuntu-toolchain-r-test
+
+    - os: linux
+      compiler: clang++-3.9
+      env: TOOLSET=clang COMPILER=clang++-3.9 CXXSTD=11,14,1z
+      addons:
+        apt:
+          packages:
+            - clang-3.9
+          sources:
+            - ubuntu-toolchain-r-test
+
+    - os: linux
+      compiler: clang++-4.0
+      env: TOOLSET=clang COMPILER=clang++-4.0 CXXSTD=11,14,1z
+      addons:
+        apt:
+          packages:
+            - clang-4.0
+          sources:
+            - ubuntu-toolchain-r-test
+
+    - os: linux
+      dist: bionic
+      compiler: clang++-5.0
+      env: TOOLSET=clang COMPILER=clang++-5.0 CXXSTD=11,14,1z
+      addons:
+        apt:
+          packages:
+            - clang-5.0
+          sources:
+            - ubuntu-toolchain-r-test
+
+    - os: linux
+      dist: bionic
+      compiler: clang++-6.0
+      env: TOOLSET=clang COMPILER=clang++-6.0 CXXSTD=11,14,17
+      addons:
+        apt:
+          packages:
+            - clang-6.0
+          sources:
+            - ubuntu-toolchain-r-test
+
+    - os: linux
+      dist: bionic
+      compiler: clang++-7
+      env: TOOLSET=clang COMPILER=clang++-7 CXXSTD=11,14,17,2a
+      addons:
+        apt:
+          packages:
+            - clang-7
+          sources:
+            - ubuntu-toolchain-r-test
+            - llvm-toolchain-bionic-7
+
+    - os: linux
+      dist: bionic
+      compiler: clang++-8
+      env: TOOLSET=clang COMPILER=clang++-8 CXXSTD=11,14,17,2a
+      addons:
+        apt:
+          packages:
+            - clang-8
+          sources:
+            - ubuntu-toolchain-r-test
+            - llvm-toolchain-bionic-8
+
+    - os: linux
+      dist: bionic
+      compiler: clang++-9
+      env: TOOLSET=clang COMPILER=clang++-9 CXXSTD=11,14,17,2a
+      addons:
+        apt:
+          packages:
+            - clang-9
+          sources:
+            - ubuntu-toolchain-r-test
+            - sourceline: 'deb https://apt.llvm.org/bionic/ llvm-toolchain-bionic-9 main'
+              key_url: 'https://apt.llvm.org/llvm-snapshot.gpg.key'
+
+    - os: linux
+      dist: bionic
+      compiler: clang++-10
+      env: TOOLSET=clang COMPILER=clang++-10 CXXSTD=11,14,17,2a
+      addons:
+        apt:
+          packages:
+            - clang-10
+          sources:
+            - ubuntu-toolchain-r-test
+            - sourceline: 'deb https://apt.llvm.org/bionic/ llvm-toolchain-bionic-10 main'
+              key_url: 'https://apt.llvm.org/llvm-snapshot.gpg.key'
+
+    - os: linux
+      dist: bionic
+      compiler: clang++-11
+      env: TOOLSET=clang COMPILER=clang++-11 CXXSTD=11,14,17,2a
+      addons:
+        apt:
+          packages:
+            - clang-11
+          sources:
+            - ubuntu-toolchain-r-test
+            - sourceline: 'deb https://apt.llvm.org/bionic/ llvm-toolchain-bionic-11 main'
+              key_url: 'https://apt.llvm.org/llvm-snapshot.gpg.key'
+
+    - os: linux
+      dist: bionic
+      compiler: clang++-12
+      env: UBSAN=1 TOOLSET=clang COMPILER=clang++-12 CXXSTD=11,14,17,2a UBSAN_OPTIONS=print_stacktrace=1
+      addons:
+        apt:
+          packages:
+            - clang-12
+          sources:
+            - ubuntu-toolchain-r-test
+            - sourceline: 'deb https://apt.llvm.org/bionic/ llvm-toolchain-bionic-12 main'
+              key_url: 'https://apt.llvm.org/llvm-snapshot.gpg.key'
+
+    - os: linux
+      dist: trusty
+      compiler: clang++-libc++
+      env: TOOLSET=clang COMPILER=clang++-libc++ CXXSTD=11,14,1z
+      addons:
+        apt:
+          packages:
+            - libc++-dev
+
+    - os: linux
+      dist: bionic
+      compiler: clang++-libc++
+      env: TOOLSET=clang COMPILER=clang++-libc++ CXXSTD=11,14,17,2a
+      addons:
+        apt:
+          packages:
+            - libc++-dev
+
+    - os: osx
+      compiler: clang++
+      env: UBSAN=1 TOOLSET=clang COMPILER=clang++ CXXSTD=11,14,1z UBSAN_OPTIONS=print_stacktrace=1
+
+    - os: linux
+      env: CMAKE_TEST=1
+      script:
+        - mkdir __build__ && cd __build__
+        - cmake -DBOOST_ENABLE_CMAKE=1 -DBUILD_TESTING=ON -DBoost_VERBOSE=1 -DBOOST_INCLUDE_LIBRARIES=variant2 ..
+        - ctest --output-on-failure -R boost_variant2
+
+    - os: linux
+      env: CMAKE_SUBDIR_TEST=1
+      install:
+        - BOOST_BRANCH=develop && [ "$TRAVIS_BRANCH" == "master" ] && BOOST_BRANCH=master || true
+        - git clone -b $BOOST_BRANCH https://github.com/boostorg/assert.git ../assert
+        - git clone -b $BOOST_BRANCH https://github.com/boostorg/config.git ../config
+        - git clone -b $BOOST_BRANCH https://github.com/boostorg/core.git ../core
+        - git clone -b $BOOST_BRANCH https://github.com/boostorg/mp11.git ../mp11
+      script:
+      - cd test/cmake_subdir_test && mkdir __build__ && cd __build__
+      - cmake ..
+      - cmake --build .
+      - cmake --build . --target check
+
+    - os: linux
+      env: CMAKE_INSTALL_TEST=1
+      script:
+        - pip install --user cmake
+        - mkdir __build__ && cd __build__
+        - cmake -DBOOST_ENABLE_CMAKE=1 -DBoost_VERBOSE=1 -DBOOST_INCLUDE_LIBRARIES=variant2 -DCMAKE_INSTALL_PREFIX=~/.local ..
+        - cmake --build . --target install
+        - cd ../libs/variant2/test/cmake_install_test && mkdir __build__ && cd __build__
+        - cmake -DCMAKE_INSTALL_PREFIX=~/.local ..
+        - cmake --build .
+        - cmake --build . --target check
+
+install:
+  - BOOST_BRANCH=develop && [ "$TRAVIS_BRANCH" == "master" ] && BOOST_BRANCH=master || true
+  - cd ..
+  - git clone -b $BOOST_BRANCH --depth 1 https://github.com/boostorg/boost.git boost-root
+  - cd boost-root
+  - git submodule update --init tools/boostdep
+  - mkdir -p libs/variant2
+  - cp -r $TRAVIS_BUILD_DIR/* libs/variant2
+  - python tools/boostdep/depinst/depinst.py variant2
+  - ./bootstrap.sh
+  - ./b2 headers
+
+script:
+  - |-
+    echo "using $TOOLSET : : $COMPILER ;" > ~/user-config.jam
+  - ./b2 libs/variant2/test toolset=$TOOLSET cxxstd=$CXXSTD variant=debug,release ${UBSAN:+cxxflags=-fsanitize=undefined cxxflags=-fno-sanitize-recover=undefined linkflags=-fsanitize=undefined define=UBSAN=1 debug-symbols=on} ${LINKFLAGS:+linkflags=$LINKFLAGS}
+
+notifications:
+  email:
+    on_success: always

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/CMakeLists.txt

@@ -0,0 +1,28 @@
+# Generated by `boostdep --cmake variant2`
+# 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 3.8...3.20)
+
+project(boost_variant2 VERSION "${BOOST_SUPERPROJECT_VERSION}" LANGUAGES CXX)
+
+add_library(boost_variant2 INTERFACE)
+add_library(Boost::variant2 ALIAS boost_variant2)
+
+target_include_directories(boost_variant2 INTERFACE include)
+
+target_link_libraries(boost_variant2
+  INTERFACE
+    Boost::assert
+    Boost::config
+    Boost::mp11
+)
+
+target_compile_features(boost_variant2 INTERFACE cxx_std_11)
+
+if(BUILD_TESTING AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/test/CMakeLists.txt")
+
+  add_subdirectory(test)
+
+endif()

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/README.md

@@ -0,0 +1,18 @@
+# Boost.Variant2
+
+This repository contains a never-valueless, strong guarantee, C++11/14/17
+implementation of [std::variant](http://en.cppreference.com/w/cpp/utility/variant).
+See [the documentation](https://www.boost.org/libs/variant2)
+for more information.
+
+The library is part of Boost, starting from release 1.71. It depends on
+Boost.Mp11, Boost.Config, and Boost.Assert.
+
+Supported compilers:
+
+* g++ 4.8 or later with `-std=c++11` or above
+* clang++ 3.9 or later with `-std=c++11` or above
+* Visual Studio 2015, 2017, 2019
+
+Tested on [Github Actions](https://github.com/boostorg/variant2/actions) and
+[Appveyor](https://ci.appveyor.com/project/pdimov/variant2-fkab9).

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/appveyor.yml

@@ -0,0 +1,54 @@
+# 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-14.0
+      ADDRMD: 32,64
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+      TOOLSET: msvc-14.1
+      ADDRMD: 32,64
+      CXXSTD: 14,17,latest
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+      TOOLSET: clang-win
+      ADDRMD: 64
+      CXXSTD: 14,17,latest
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
+      TOOLSET: msvc-14.2
+      ADDRMD: 32,64
+      CXXSTD: 14,17,latest
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
+      TOOLSET: clang-win
+      ADDRMD: 64
+      CXXSTD: 14,17,latest
+
+install:
+  - set BOOST_BRANCH=develop
+  - if "%APPVEYOR_REPO_BRANCH%" == "master" set BOOST_BRANCH=master
+  - cd ..
+  - git clone -b %BOOST_BRANCH% --depth 1 https://github.com/boostorg/boost.git boost-root
+  - cd boost-root
+  - git submodule update --init tools/boostdep
+  - xcopy /s /e /q %APPVEYOR_BUILD_FOLDER% libs\variant2\
+  - python tools/boostdep/depinst/depinst.py variant2
+  - cmd /c bootstrap
+  - b2 -d0 headers
+
+build: off
+
+test_script:
+  - if not "%CXXSTD%" == "" set CXXSTD=cxxstd=%CXXSTD%
+  - if not "%ADDRMD%" == "" set ADDRMD=address-model=%ADDRMD%
+  - b2 -j3 libs/variant2/test toolset=%TOOLSET% %CXXSTD% %ADDRMD% variant=debug,release embed-manifest-via=linker

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/benchmark/benchmark1.cpp

@@ -0,0 +1,168 @@
+// Copyright 2019 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
+
+#if defined(ONLY_V2)
+# define NO_BV
+# define NO_SV
+#endif
+
+#if defined(ONLY_BV)
+# define NO_V2
+# define NO_SV
+#endif
+
+#if defined(ONLY_SV)
+# define NO_V2
+# define NO_BV
+#endif
+
+#if !defined(NO_V2)
+#include <boost/variant2/variant.hpp>
+#endif
+
+#if !defined(NO_BV)
+#include <boost/variant.hpp>
+#endif
+
+#if !defined(NO_SV)
+#include <variant>
+#endif
+
+#include <type_traits>
+#include <chrono>
+#include <iostream>
+#include <iomanip>
+#include <vector>
+#include <map>
+#include <string>
+#include <stdexcept>
+
+template<class T> struct is_numeric: std::integral_constant<bool, std::is_integral<T>::value || std::is_floating_point<T>::value>
+{
+};
+
+template<class T, class U> struct have_addition: std::integral_constant<bool, is_numeric<T>::value && is_numeric<U>::value>
+{
+};
+
+template<class T, class U, class E = std::enable_if_t<have_addition<T, U>::value>> auto add( T const& t, U const& u )
+{
+    return t + u;
+}
+
+template<class T, class U, class E = std::enable_if_t<!have_addition<T, U>::value>> double add( T const& /*t*/, U const& /*u*/ )
+{
+    throw std::logic_error( "Invalid addition" );
+}
+
+inline double to_double( double const& v )
+{
+    return v;
+}
+
+#if !defined(NO_V2)
+
+template<class... T> boost::variant2::variant<T...> operator+( boost::variant2::variant<T...> const& v1, boost::variant2::variant<T...> const& v2 )
+{
+    return visit( [&]( auto const& x1, auto const & x2 ) -> boost::variant2::variant<T...> { return add( x1, x2 ); }, v1, v2 );
+}
+
+template<class... T> double to_double( boost::variant2::variant<T...> const& v )
+{
+    return boost::variant2::get<double>( v );
+}
+
+#endif
+
+#if !defined(NO_BV)
+
+template<class... T> boost::variant<T...> operator+( boost::variant<T...> const& v1, boost::variant<T...> const& v2 )
+{
+    return boost::apply_visitor( [&]( auto const& x1, auto const & x2 ) -> boost::variant<T...> { return add( x1, x2 ); }, v1, v2 );
+}
+
+template<class... T> double to_double( boost::variant<T...> const& v )
+{
+    return boost::get<double>( v );
+}
+
+#endif
+
+#if !defined(NO_SV)
+
+template<class... T> std::variant<T...> operator+( std::variant<T...> const& v1, std::variant<T...> const& v2 )
+{
+    return visit( [&]( auto const& x1, auto const & x2 ) -> std::variant<T...> { return add( x1, x2 ); }, v1, v2 );
+}
+
+template<class... T> double to_double( std::variant<T...> const& v )
+{
+    return std::get<double>( v );
+}
+
+#endif
+
+template<class V> void test_( long long N )
+{
+    std::vector<V> w;
+    // lack of reserve is deliberate
+
+    auto tp1 = std::chrono::high_resolution_clock::now();
+
+    for( long long i = 0; i < N; ++i )
+    {
+        V v;
+
+        if( i % 7 == 0 )
+        {
+            v = i / 7;
+        }
+        else
+        {
+            v = i / 7.0;
+        }
+
+        w.push_back( v );
+    }
+
+    V s = 0.0;
+
+    for( long long i = 0; i < N; ++i )
+    {
+        s = s + w[ i ];
+    }
+
+    auto tp2 = std::chrono::high_resolution_clock::now();
+
+    std::cout << std::setw( 6 ) << std::chrono::duration_cast<std::chrono::milliseconds>( tp2 - tp1 ).count() << " ms; S=" << to_double( s ) << "\n";
+}
+
+template<class... T> void test( long long N )
+{
+    std::cout << "N=" << N << ":\n";
+
+    std::cout << "        double: "; test_<double>( N );
+#if !defined(NO_V2)
+    std::cout << "      variant2: "; test_<boost::variant2::variant<T...>>( N );
+#endif
+#if !defined(NO_BV)
+    std::cout << "boost::variant: "; test_<boost::variant<T...>>( N );
+#endif
+#if !defined(NO_SV)
+    std::cout << "  std::variant: "; test_<std::variant<T...>>( N );
+#endif
+
+    std::cout << '\n';
+}
+
+int main()
+{
+    long long const N = 100'000'000LL;
+
+    test<long long, double>( N );
+    test<std::nullptr_t, long long, double, std::string, std::vector<std::string>, std::map<std::string, std::string>>( N );
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/benchmark/benchmark1.md

@@ -0,0 +1,267 @@
+# benchmark1.cpp results
+
+## VS 2017 15.9.7 64 bit (cl.exe 19.16, /EHsc /std:c++17)
+
+### /Od
+
+#### Compile time
+
+```
+      variant2 (-DONLY_V2): 1837 ms
+boost::variant (-DONLY_BV): 2627 ms
+  std::variant (-DONLY_SV): 1425 ms
+```
+
+#### Run time
+
+```
+N=100000000:
+        double:   9041 ms; S=7.14286e+14
+      variant2:  48367 ms; S=7.14286e+14
+boost::variant: 102776 ms; S=7.14286e+14
+  std::variant:  40590 ms; S=7.14286e+14
+
+N=100000000:
+        double:   9029 ms; S=7.14286e+14
+      variant2:  92962 ms; S=7.14286e+14
+boost::variant: 110441 ms; S=7.14286e+14
+  std::variant:  92974 ms; S=7.14286e+14
+```
+
+### /O2 /DNDEBUG
+
+#### Compile time
+
+```
+      variant2 (-DONLY_V2): 2571 ms
+boost::variant (-DONLY_BV): 3335 ms
+  std::variant (-DONLY_SV): 1903 ms
+```
+
+#### Run time
+
+```
+N=100000000:
+        double:   1949 ms; S=7.14286e+14
+      variant2:   4176 ms; S=7.14286e+14
+boost::variant:  11312 ms; S=7.14286e+14
+  std::variant:   4617 ms; S=7.14286e+14
+
+N=100000000:
+        double:   1949 ms; S=7.14286e+14
+      variant2:  11807 ms; S=7.14286e+14
+boost::variant:  15632 ms; S=7.14286e+14
+  std::variant:  10725 ms; S=7.14286e+14
+```
+
+## g++ 7.4.0 -std=c++17 (Cygwin 64 bit)
+
+### -O0
+
+#### Compile time
+
+```
+      variant2 (-DONLY_V2): 2734 ms
+boost::variant (-DONLY_BV): 4308 ms
+  std::variant (-DONLY_SV): 2298 ms
+```
+
+#### Run time
+
+```
+N=100000000:
+        double:   3620 ms; S=7.14286e+14
+      variant2:  29214 ms; S=7.14286e+14
+boost::variant:  88492 ms; S=7.14286e+14
+  std::variant:  39510 ms; S=7.14286e+14
+
+N=100000000:
+        double:   3642 ms; S=7.14286e+14
+      variant2:  75822 ms; S=7.14286e+14
+boost::variant:  96680 ms; S=7.14286e+14
+  std::variant:  66411 ms; S=7.14286e+14
+```
+
+### -O1
+
+#### Compile time
+
+```
+      variant2 (-DONLY_V2): 2103 ms
+boost::variant (-DONLY_BV): 3398 ms
+  std::variant (-DONLY_SV): 1841 ms
+```
+
+#### Run time
+
+```
+N=100000000:
+        double:   1576 ms; S=7.14286e+14
+      variant2:   3424 ms; S=7.14286e+14
+boost::variant:   4356 ms; S=7.14286e+14
+  std::variant:   3764 ms; S=7.14286e+14
+
+N=100000000:
+        double:   1582 ms; S=7.14286e+14
+      variant2:   9062 ms; S=7.14286e+14
+boost::variant:   9603 ms; S=7.14286e+14
+  std::variant:   8825 ms; S=7.14286e+14
+```
+
+### -O2 -DNDEBUG
+
+#### Compile time
+
+```
+      variant2 (-DONLY_V2): 2276 ms
+boost::variant (-DONLY_BV): 3647 ms
+  std::variant (-DONLY_SV): 2111 ms
+```
+
+#### Run time
+
+```
+N=100000000:
+        double:   1643 ms; S=7.14286e+14
+      variant2:   3070 ms; S=7.14286e+14
+boost::variant:   3385 ms; S=7.14286e+14
+  std::variant:   3880 ms; S=7.14286e+14
+
+N=100000000:
+        double:   1622 ms; S=7.14286e+14
+      variant2:   8101 ms; S=7.14286e+14
+boost::variant:   8611 ms; S=7.14286e+14
+  std::variant:   8694 ms; S=7.14286e+14
+```
+
+### -O3 -DNDEBUG
+
+#### Compile time
+
+```
+      variant2 (-DONLY_V2): 2390 ms
+boost::variant (-DONLY_BV): 3768 ms
+  std::variant (-DONLY_SV): 2094 ms
+```
+
+#### Run time
+
+```
+N=100000000:
+        double:   1611 ms; S=7.14286e+14
+      variant2:   2975 ms; S=7.14286e+14
+boost::variant:   3232 ms; S=7.14286e+14
+  std::variant:   3726 ms; S=7.14286e+14
+
+N=100000000:
+        double:   1603 ms; S=7.14286e+14
+      variant2:   8157 ms; S=7.14286e+14
+boost::variant:   8419 ms; S=7.14286e+14
+  std::variant:   8659 ms; S=7.14286e+14
+```
+
+## clang++ 5.0.1 -std=c++17 -stdlib=libc++ (Cygwin 64 bit)
+
+### -O0
+
+#### Compile time
+
+```
+      variant2 (-DONLY_V2): 2190 ms
+boost::variant (-DONLY_BV): 3537 ms
+  std::variant (-DONLY_SV): 2151 ms
+```
+
+#### Run time
+
+```
+N=100000000:
+        double:   6063 ms; S=7.14286e+14
+      variant2:  23616 ms; S=7.14286e+14
+boost::variant:  92730 ms; S=7.14286e+14
+  std::variant:  23160 ms; S=7.14286e+14
+
+N=100000000:
+        double:   6054 ms; S=7.14286e+14
+      variant2:  52738 ms; S=7.14286e+14
+boost::variant:  96896 ms; S=7.14286e+14
+  std::variant:  72595 ms; S=7.14286e+14
+```
+
+### -O1
+
+#### Compile time
+
+```
+      variant2 (-DONLY_V2): 2722 ms
+boost::variant (-DONLY_BV): 4337 ms
+  std::variant (-DONLY_SV): 2697 ms
+```
+
+#### Run time
+
+```
+N=100000000:
+        double:   2171 ms; S=7.14286e+14
+      variant2:   9280 ms; S=7.14286e+14
+boost::variant:  51478 ms; S=7.14286e+14
+  std::variant:   5642 ms; S=7.14286e+14
+
+N=100000000:
+        double:   2171 ms; S=7.14286e+14
+      variant2:  22166 ms; S=7.14286e+14
+boost::variant:  54084 ms; S=7.14286e+14
+  std::variant:  14330 ms; S=7.14286e+14
+```
+
+### -O2 -DNDEBUG
+
+#### Compile time
+
+```
+      variant2 (-DONLY_V2): 2499 ms
+boost::variant (-DONLY_BV): 3826 ms
+  std::variant (-DONLY_SV): 2645 ms
+```
+
+#### Run time
+
+```
+N=100000000:
+        double:   1604 ms; S=7.14286e+14
+      variant2:   2726 ms; S=7.14286e+14
+boost::variant:   6662 ms; S=7.14286e+14
+  std::variant:   3869 ms; S=7.14286e+14
+
+N=100000000:
+        double:   1598 ms; S=7.14286e+14
+      variant2:   8136 ms; S=7.14286e+14
+boost::variant:   9236 ms; S=7.14286e+14
+  std::variant:   6279 ms; S=7.14286e+14
+```
+
+### -O3 -DNDEBUG
+
+#### Compile time
+
+```
+      variant2 (-DONLY_V2): 2509 ms
+boost::variant (-DONLY_BV): 3845 ms
+  std::variant (-DONLY_SV): 2638 ms
+```
+
+#### Run time
+
+```
+N=100000000:
+        double:   1592 ms; S=7.14286e+14
+      variant2:   2697 ms; S=7.14286e+14
+boost::variant:   6648 ms; S=7.14286e+14
+  std::variant:   3826 ms; S=7.14286e+14
+
+N=100000000:
+        double:   1614 ms; S=7.14286e+14
+      variant2:   8035 ms; S=7.14286e+14
+boost::variant:   9221 ms; S=7.14286e+14
+  std::variant:   6319 ms; S=7.14286e+14
+```

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/benchmark/benchmark2.cpp

@@ -0,0 +1,149 @@
+// Copyright 2019 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
+
+#if defined(ONLY_V2)
+# define NO_BV
+# define NO_SV
+#endif
+
+#if defined(ONLY_BV)
+# define NO_V2
+# define NO_SV
+#endif
+
+#if defined(ONLY_SV)
+# define NO_V2
+# define NO_BV
+#endif
+
+#if !defined(NO_V2)
+#include <boost/variant2/variant.hpp>
+#endif
+
+#if !defined(NO_BV)
+#include <boost/variant.hpp>
+#endif
+
+#if !defined(NO_SV)
+#include <variant>
+#endif
+
+#include <type_traits>
+#include <chrono>
+#include <iostream>
+#include <iomanip>
+#include <vector>
+
+struct prefix
+{
+    int v_;
+};
+
+struct X1: prefix {};
+struct X2: prefix {};
+struct X3: prefix {};
+struct X4: prefix {};
+struct X5: prefix {};
+struct X6: prefix {};
+struct X7: prefix {};
+struct X8: prefix {};
+struct X9: prefix {};
+struct X10: prefix {};
+struct X11: prefix {};
+struct X12: prefix {};
+
+inline int get_value( prefix const& v )
+{
+    return v.v_;
+}
+
+#if !defined(NO_V2)
+
+template<class... T> int get_value( boost::variant2::variant<T...> const& v )
+{
+    return visit( []( prefix const& x ) { return x.v_; }, v );
+}
+
+#endif
+
+#if !defined(NO_BV)
+
+template<class... T> int get_value( boost::variant<T...> const& v )
+{
+    return boost::apply_visitor( []( prefix const& x ) { return x.v_; }, v );
+}
+
+#endif
+
+#if !defined(NO_SV)
+
+template<class... T> int get_value( std::variant<T...> const& v )
+{
+    return visit( []( prefix const& x ) { return x.v_; }, v );
+}
+
+#endif
+
+template<class V> void test_( int N )
+{
+    std::vector<V> w;
+    // lack of reserve is deliberate
+
+    auto tp1 = std::chrono::high_resolution_clock::now();
+
+    for( int i = 0; i < N / 12; ++i )
+    {
+        w.push_back( X1{ i } );
+        w.push_back( X2{ i } );
+        w.push_back( X3{ i } );
+        w.push_back( X4{ i } );
+        w.push_back( X5{ i } );
+        w.push_back( X6{ i } );
+        w.push_back( X7{ i } );
+        w.push_back( X8{ i } );
+        w.push_back( X9{ i } );
+        w.push_back( X10{ i } );
+        w.push_back( X11{ i } );
+        w.push_back( X12{ i } );
+    }
+
+    unsigned long long s = 0;
+
+    for( std::size_t i = 0, n = w.size(); i < n; ++i )
+    {
+        s = s + get_value( w[ i ] );
+    }
+
+    auto tp2 = std::chrono::high_resolution_clock::now();
+
+    std::cout << std::setw( 6 ) << std::chrono::duration_cast<std::chrono::milliseconds>( tp2 - tp1 ).count() << " ms; S=" << s << "\n";
+}
+
+template<class... T> void test( int N )
+{
+    std::cout << "N=" << N << ":\n";
+
+    std::cout << "        prefix: "; test_<prefix>( N );
+#if !defined(NO_V2)
+    std::cout << "      variant2: "; test_<boost::variant2::variant<T...>>( N );
+#endif
+#if !defined(NO_BV)
+    std::cout << "boost::variant: "; test_<boost::variant<T...>>( N );
+#endif
+#if !defined(NO_SV)
+    std::cout << "  std::variant: "; test_<std::variant<T...>>( N );
+#endif
+
+    std::cout << '\n';
+}
+
+int main()
+{
+    int const N = 100'000'000;
+
+    test<X1, X2, X3, X4, X5, X6, X7, X8, X9, X10, X11, X12>( N );
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/benchmark/benchmark2.md

@@ -0,0 +1,207 @@
+# benchmark2.cpp results
+
+## VS 2017 15.9.7 64 bit (cl.exe 19.16, /EHsc /std:c++17)
+
+### /Od
+
+#### Compile time
+
+```
+      variant2 (-DONLY_V2): 1403 ms
+boost::variant (-DONLY_BV): 2972 ms
+  std::variant (-DONLY_SV): 1057 ms
+```
+
+#### Run time
+
+```
+N=100000000:
+        prefix:   7016 ms; S=416666583333336
+      variant2:  24723 ms; S=416666583333336
+boost::variant:  60438 ms; S=416666583333336
+  std::variant:  20707 ms; S=416666583333336
+```
+
+### /O2 /DNDEBUG
+
+#### Compile time
+
+```
+      variant2 (-DONLY_V2): 1778 ms
+boost::variant (-DONLY_BV): 3252 ms
+  std::variant (-DONLY_SV): 1372 ms
+```
+
+#### Run time
+
+```
+N=100000000:
+        prefix:    803 ms; S=416666583333336
+      variant2:   2124 ms; S=416666583333336
+boost::variant:   6191 ms; S=416666583333336
+  std::variant:   2193 ms; S=416666583333336
+```
+
+## g++ 7.4.0 -std=c++17 (Cygwin 64 bit)
+
+### -O0
+
+#### Compile time
+
+```
+      variant2 (-DONLY_V2): 1739 ms
+boost::variant (-DONLY_BV): 3113 ms
+  std::variant (-DONLY_SV): 1719 ms
+```
+
+#### Run time
+
+```
+N=100000000:
+        prefix:   5163 ms; S=416666583333336
+      variant2:  20628 ms; S=416666583333336
+boost::variant:  43308 ms; S=416666583333336
+  std::variant:  42375 ms; S=416666583333336
+```
+
+### -O1
+
+#### Compile time
+
+```
+      variant2 (-DONLY_V2): 1484 ms
+boost::variant (-DONLY_BV): 2947 ms
+  std::variant (-DONLY_SV): 1448 ms
+```
+
+#### Run time
+
+```
+N=100000000:
+        prefix:    781 ms; S=416666583333336
+      variant2:   1992 ms; S=416666583333336
+boost::variant:   2249 ms; S=416666583333336
+  std::variant:   4843 ms; S=416666583333336
+```
+
+### -O2 -DNDEBUG
+
+#### Compile time
+
+```
+      variant2 (-DONLY_V2): 1547 ms
+boost::variant (-DONLY_BV): 2999 ms
+  std::variant (-DONLY_SV): 1528 ms
+```
+
+#### Run time
+
+```
+N=100000000:
+        prefix:    793 ms; S=416666583333336
+      variant2:   1686 ms; S=416666583333336
+boost::variant:   1833 ms; S=416666583333336
+  std::variant:   4340 ms; S=416666583333336
+```
+
+### -O3 -DNDEBUG
+
+#### Compile time
+
+```
+      variant2 (-DONLY_V2): 1595 ms
+boost::variant (-DONLY_BV): 3084 ms
+  std::variant (-DONLY_SV): 1620 ms
+```
+
+#### Run time
+
+```
+N=100000000:
+        prefix:    853 ms; S=416666583333336
+      variant2:   1681 ms; S=416666583333336
+boost::variant:   1773 ms; S=416666583333336
+  std::variant:   3989 ms; S=416666583333336
+```
+
+## clang++ 5.0.1 -std=c++17 -stdlib=libc++ (Cygwin 64 bit)
+
+### -O0
+
+#### Compile time
+
+```
+      variant2 (-DONLY_V2): 1578 ms
+boost::variant (-DONLY_BV): 2623 ms
+  std::variant (-DONLY_SV): 1508 ms
+```
+
+#### Run time
+
+```
+N=100000000:
+        prefix:   4447 ms; S=416666583333336
+      variant2:  16016 ms; S=416666583333336
+boost::variant:  42365 ms; S=416666583333336
+  std::variant:  17817 ms; S=416666583333336
+```
+
+### -O1
+
+#### Compile time
+
+```
+      variant2 (-DONLY_V2): 1841 ms
+boost::variant (-DONLY_BV): 2919 ms
+  std::variant (-DONLY_SV): 1776 ms
+```
+
+#### Run time
+
+```
+N=100000000:
+        prefix:   1390 ms; S=416666583333336
+      variant2:   5397 ms; S=416666583333336
+boost::variant:  23234 ms; S=416666583333336
+  std::variant:   2807 ms; S=416666583333336
+```
+
+### -O2 -DNDEBUG
+
+#### Compile time
+
+```
+      variant2 (-DONLY_V2): 1766 ms
+boost::variant (-DONLY_BV): 2817 ms
+  std::variant (-DONLY_SV): 1718 ms
+```
+
+#### Run time
+
+```
+N=100000000:
+        prefix:    604 ms; S=416666583333336
+      variant2:   1625 ms; S=416666583333336
+boost::variant:   2735 ms; S=416666583333336
+  std::variant:   2664 ms; S=416666583333336
+```
+
+### -O3 -DNDEBUG
+
+#### Compile time
+
+```
+      variant2 (-DONLY_V2): 1720 ms
+boost::variant (-DONLY_BV): 2806 ms
+  std::variant (-DONLY_SV): 1737 ms
+```
+
+#### Run time
+
+```
+N=100000000:
+        prefix:    603 ms; S=416666583333336
+      variant2:   1608 ms; S=416666583333336
+boost::variant:   2696 ms; S=416666583333336
+  std::variant:   2668 ms; S=416666583333336
+```

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/doc/.gitignore

@@ -0,0 +1,2 @@
+/pdf/
+/html/

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/doc/Jamfile

@@ -0,0 +1,23 @@
+# Copyright 2017, 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)
+
+import asciidoctor ;
+
+html variant2.html : variant2.adoc ;
+
+install html_ : variant2.html : <location>html ;
+
+pdf variant2.pdf : variant2.adoc ;
+explicit variant2.pdf ;
+
+install pdf_ : variant2.pdf : <location>pdf ;
+explicit pdf_ ;
+
+###############################################################################
+alias boostdoc ;
+explicit boostdoc ;
+alias boostrelease : html_ ;
+explicit boostrelease ;

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/doc/variant2-docinfo-footer.html

@@ -0,0 +1,6 @@
+<style>
+
+*:not(pre)>code { background: none; color: #600000; }
+:not(pre):not([class^=L])>code { background: none; color: #600000; }
+
+</style>

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/doc/variant2.adoc

@@ -0,0 +1,28 @@
+////
+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
+////
+
+# Boost.Variant2: A never valueless variant type
+Peter Dimov
+:toc: left
+:toclevels: 4
+:idprefix:
+:docinfo: private-footer
+:source-highlighter: rouge
+:source-language: c++
+
+:leveloffset: +1
+
+include::variant2/overview.adoc[]
+include::variant2/changelog.adoc[]
+include::variant2/design.adoc[]
+include::variant2/implementation.adoc[]
+include::variant2/reference.adoc[]
+include::variant2/copyright.adoc[]
+
+:leveloffset: -1

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/doc/variant2/changelog.adoc

@@ -0,0 +1,43 @@
+////
+Copyright 2019-2021 Peter Dimov
+Distributed under the Boost Software License, Version 1.0.
+https://www.boost.org/LICENSE_1_0.txt
+////
+
+[#changelog]
+# Revision History
+:idprefix: changelog_
+
+## Changes in 1.79.0
+
+* Added `operator<<` for `monostate`.
+
+## Changes in 1.78.0
+
+* Added `<boost/variant2.hpp>`.
+* Added `unsafe_get<I>`.
+* Added `visit_by_index`.
+* Added `operator<<`.
+
+## Changes in 1.76.0
+
+* Improved generated code for the double buffered case.
+
+## Changes in 1.74.0
+
+* Added support for derived types in `visit`
+* Improved compilation performance for many (hundreds of) alternatives.
+* Added support for `visit<R>`
+
+## Changes in 1.73.0
+
+* Added support for `std::hash`, `boost::hash`.
+* `variant<T...>` is now trivial when all types in `T...` are trivial.
+  This improves performance by enabling it to be passed to, and returned
+  from, functions in registers.
+
+## Changes in 1.71.0
+
+After the Boost formal review, the implementation has been
+changed to provide the strong exception safety guarantee,
+instead of basic. `expected` has been removed.

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/doc/variant2/copyright.adoc

@@ -0,0 +1,15 @@
+////
+Copyright 2018, 2019 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
+////
+
+[#copyright]
+# Copyright and License
+:idprefix:
+
+This documentation is copyright 2018, 2019 Peter Dimov and is distributed under
+the http://www.boost.org/LICENSE_1_0.txt[Boost Software License, Version 1.0].

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/doc/variant2/design.adoc

@@ -0,0 +1,189 @@
+////
+Copyright 2018, 2019 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
+////
+
+[#design]
+# Design
+:idprefix: design_
+
+## Features
+
+This `variant` implementation has two distinguishing features:
+
+* It's never "valueless", that is, `variant<T1, T2, ..., Tn>` has an
+  invariant that it always contains a valid value of one of the types
+  `T1`, `T2`, ..., `Tn`.
+* It provides the strong exception safety guarantee on assignment and
+  `emplace`.
+
+This is achieved with the use of double storage, unless all of the
+contained types have a non-throwing move constructor.
+
+## Rationale
+
+### Never Valueless
+
+It makes intuitive sense that `variant<X, Y, Z>` can hold only values
+of type `X`, type `Y`, or type `Z`, and nothing else.
+
+If we think of `variant` as an extension of `union`, since a `union`
+has a state called "no active member", an argument can be made that a
+`variant<X, Y, Z>` should also have such an additional state, holding
+none of `X`, `Y`, `Z`.
+
+This however makes `variant` less convenient in practice and less useful
+as a building block. If we really need a variable that only holds `X`,
+`Y`, or `Z`, the additional empty state creates complications that need
+to be worked around. And in the case where we do need this additional
+empty state, we can just use `variant<empty, X, Y, Z>`, with a suitable
+`struct empty {};`.
+
+From a pure design perspective, the case for no additional empty state is
+solid. Implementation considerations, however, argue otherwise.
+
+When we replace the current value of the `variant` (of, say, type `X`) with
+another (of type `Y`), since the new value needs to occupy the same storage
+as the old one, we need to destroy the old `X` first, then construct a new
+`Y` in its place. But since this is {cpp}, the construction can fail with an
+exception. At this point the `variant` is in the "has no active member"
+state that we've agreed it cannot be in.
+
+This is a legitimate problem, and it is this problem that makes having
+an empty/valueless state so appealing. We just leave the `variant` empty on
+exception and we're done.
+
+As explained, though, this is undesirable from a design perspective as it
+makes the component less useful and less elegant.
+
+There are several ways around the issue. The most straightforward one is to
+just disallow types whose construction can throw. Since we can always create
+a temporary value first, then use the move constructor to initialize the one
+in the `variant`, it's enough to require a nonthrowing move constructor,
+rather than all constructors to be nonthrowing.
+
+Unfortunately, under at least one popular standard library implementation,
+node based containers such as `std::list` and `std::map` have a potentially
+throwing move constructor. Disallowing `variant<X, std::map<Y, Z>>` is hardly
+practical, so the exceptional case cannot be avoided.
+
+On exception, we could also construct some other value, leaving the `variant`
+valid; but in the general case, that construction can also throw. If one of
+the types has a nonthrowing default constructor, we can use it; but if not,
+we can't.
+
+The approach Boost.Variant takes here is to allocate a temporary copy of
+the value on the heap. On exception, a pointer to that temporary copy can be
+stored into the `variant`. Pointer operations don't throw.
+
+Another option is to use double buffering. If our `variant` occupies twice
+the storage, we can construct the new value in the unused half, then, once
+the construction succeeds, destroy the old value in the other half.
+
+When `std::variant` was standardized, none of those approaches was deemed
+palatable, as all of them either introduce overhead or are too restrictive
+with respect to the types a `variant` can contain. So as a compromise,
+`std::variant` took a way that can (noncharitably) be described as "having
+your cake and eating it too."
+
+Since the described exceptional situation is relatively rare, `std::variant`
+has a special case, called "valueless", into which it goes on exception,
+but the interface acknowledges its existence as little as possible, allowing
+users to pretend that it doesn't exist.
+
+This is, arguably, not that bad from a practical point of view, but it leaves
+many of us wanting. Rare states that "never" occur are undertested and when
+that "never" actually happens, it's usually in the most inconvenient of times.
+
+This implementation does not follow `std::variant`; it statically guarantees
+that `variant` is never in a valueless state. The function
+`valueless_by_exception` is provided for compatibility, but it always returns
+`false`.
+
+Instead, if the contained types are such that it's not possible to avoid an
+exceptional situation when changing the contained value, double storage is
+used.
+
+### Strong Exception Safety
+
+The initial submission only provided the basic exception safety guarantee.
+If an attempt to change the contained value (via assignment or `emplace`)
+failed with an exception, and a type with a nonthrowing default constructor
+existed among the alternatives, a value of that type was created into the
+`variant`. The upside of this decision was that double storage was needed
+less frequently.
+
+The reviewers were fairly united in hating it. Constructing a random type
+was deemed too unpredictable and not complying with the spirit of the
+basic guarantee. The default constructor of the chosen type, even if
+nonthrowing, may still have undesirable side effects. Or, if not that, a
+value of that type may have special significance for the surrounding code.
+Therefore, some argued, the `variant` should either remain with its
+old value, or transition into the new one, without synthesizing other
+states.
+
+At the other side of the spectrum, there were those who considered double
+storage unacceptable. But they considered it unacceptable in principle,
+regardless of the frequency with which it was used.
+
+As a result, providing the strong exception safety guarantee on assignment
+and `emplace` was declared an acceptance condition.
+
+In retrospect, this was the right decision. The reason the strong guarantee
+is generally not provided is because it doesn't compose. When `X` and `Y`
+provide the basic guarantee on assignment, so does `struct { X x; Y y; };`.
+Similarly, when `X` and `Y` have nonthrowing assignments, so does the
+`struct`. But this doesn't hold for the strong guarantee.
+
+The usual practice is to provide the basic guarantee on assignment and
+let the user synthesize a "strong" assignment out of either a nonthrowing
+`swap` or a nonthrowing move assignment. That is, given `x1` and `x2` of
+type `X`, instead of the "basic" `x1 = x2;`, use either `X(x2).swap(x1);`
+or `x1 = X(x2);`.
+
+Nearly all types provide a nonthrowing `swap` or a nonthrowing move
+assignment, so this works well. Nearly all, except `variant`, which in the
+general case has neither a nonthrowing `swap` nor a nonthrowing move
+assignment. If `variant` does not provide the strong guarantee itself, it's
+impossible for the user to synthesize it.
+
+So it should, and so it does.
+
+## Differences with std::variant
+
+The main differences between this implementation and `std::variant` are:
+
+* No valueless-by-exception state: `valueless_by_exception()` always
+  returns `false`.
+* Strong exception safety guarantee on assignment and `emplace`.
+* `emplace` first constructs the new value and then destroys the old one;
+  in the single storage case, this translates to constructing a temporary
+  and then moving it into place.
+* A converting constructor from, e.g. `variant<int, float>` to 
+  `variant<float, double, int>` is provided as an extension.
+* The reverse operation, going from `variant<float, double, int>` to
+  `variant<int, float>` is provided as the member function `subset<U...>`.
+  (This operation can throw if the current state of the variant cannot be
+  represented.)
+* `unsafe_get`, an unchecked alternative to `get` and `get_if`, is provided
+  as an extension.
+* `visit_by_index`, a visitation function that takes a single variant and a
+  number of function objects, one per alternative, is provided as an extension.
+* The {cpp}20 additions and changes to `std::variant` have not yet been
+  implemented.
+
+## Differences with Boost.Variant
+
+This library is API compatible with `std::variant`. As such, its interface
+is different from Boost.Variant's. For example, visitation is performed via
+`visit` instead of `apply_visitor`.
+
+Recursive variants are not supported.
+
+Double storage is used instead of temporary heap backup. This `variant` is
+always "stack-based", it never allocates, and never throws `bad_alloc` on
+its own.

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/doc/variant2/implementation.adoc

@@ -0,0 +1,22 @@
+////
+Copyright 2019 Peter Dimov
+Distributed under the Boost Software License, Version 1.0.
+https://www.boost.org/LICENSE_1_0.txt
+////
+
+[#implementation]
+# Implementation
+:idprefix: implementation_
+
+## Dependencies
+
+This implementation only depends on Boost.Config, Boost.Assert, and Boost.Mp11.
+
+## Supported Compilers
+
+* GCC 4.8 or later with `-std=c++11` or above
+* Clang 3.9 or later with `-std=c++11` or above
+* Visual Studio 2015, 2017, 2019
+
+Tested on https://github.com/boostorg/variant2/actions[Github Actions] and
+https://ci.appveyor.com/project/pdimov/variant2-fkab9[Appveyor].

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/doc/variant2/overview.adoc

@@ -0,0 +1,335 @@
+////
+Copyright 2018, 2019 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
+////
+
+[#overview]
+# Overview
+:idprefix: overview_
+
+## Description
+
+This library implements a type-safe discriminated/tagged union type,
+`variant<T...>`, that is API-compatible with the {cpp}17 Standard's
+http://en.cppreference.com/w/cpp/utility/variant[`std::variant<T...>`].
+
+A `variant<T1, T2, ..., Tn>` variable can hold a value of any of the
+types `T1`, `T2`, ..., `Tn`. For example,
+`variant<int64_t, double, std::string>` can hold an `int64_t` value, a
+`double` value, or a `string` value.
+
+Such a type is sometimes called a "tagged union", because it's roughly
+equivalent to
+
+```
+struct V
+{
+    enum tag { tag_int64_t, tag_double, tag_string };
+
+    tag tag_;
+
+    union
+    {
+        int64_t     i_;
+        double      d_;
+        std::string s_;
+    };
+};
+```
+
+## Usage Examples
+
+Variants can be used to represent dynamically-typed values. A configuration
+file of the form
+
+```
+server.host=test.example.com
+server.port=9174
+cache.max_load=0.7
+```
+
+can be represented as `std::map<std::string, variant<int64_t, double,
+std::string>>`.
+
+Variants can also represent polymorphism. To take a classic example, a
+polymorphic collection of shapes:
+
+```
+#define _USE_MATH_DEFINES
+#include <iostream>
+#include <vector>
+#include <memory>
+#include <cmath>
+
+class Shape
+{
+public:
+
+    virtual ~Shape() = default;
+    virtual double area() const = 0;
+};
+
+class Rectangle: public Shape
+{
+private:
+
+    double width_, height_;
+
+public:
+
+    Rectangle( double width, double height ):
+        width_( width ), height_( height ) {}
+
+    virtual double area() const { return width_ * height_; }
+};
+
+class Circle: public Shape
+{
+private:
+
+    double radius_;
+
+public:
+
+    explicit Circle( double radius ): radius_( radius ) {}
+    virtual double area() const { return M_PI * radius_ * radius_; }
+};
+
+double total_area( std::vector<std::unique_ptr<Shape>> const & v )
+{
+    double s = 0.0;
+
+    for( auto const& p: v )
+    {
+        s += p->area();
+    }
+
+    return s;
+}
+
+int main()
+{
+    std::vector<std::unique_ptr<Shape>> v;
+
+    v.push_back( std::unique_ptr<Shape>( new Circle( 1.0 ) ) );
+    v.push_back( std::unique_ptr<Shape>( new Rectangle( 2.0, 3.0 ) ) );
+
+    std::cout << "Total area: " << total_area( v ) << std::endl;
+}
+```
+
+can instead be represented as a collection of `variant<Rectangle, Circle>`
+values. This requires the possible `Shape` types be known in advance, as is
+often the case. In return, we no longer need virtual functions, or to allocate
+the values on the heap with `new Rectangle` and `new Circle`:
+
+```
+#define _USE_MATH_DEFINES
+#include <iostream>
+#include <vector>
+#include <cmath>
+
+#include <boost/variant2/variant.hpp>
+using namespace boost::variant2;
+
+struct Rectangle
+{
+    double width_, height_;
+    double area() const { return width_ * height_; }
+};
+
+struct Circle
+{
+    double radius_;
+    double area() const { return M_PI * radius_ * radius_; }
+};
+
+double total_area( std::vector<variant<Rectangle, Circle>> const & v )
+{
+    double s = 0.0;
+
+    for( auto const& x: v )
+    {
+        s += visit( []( auto const& y ){ return y.area(); }, x );
+    }
+
+    return s;
+}
+
+int main()
+{
+    std::vector<variant<Rectangle, Circle>> v;
+
+    v.push_back( Circle{ 1.0 } );
+    v.push_back( Rectangle{ 2.0, 3.0 } );
+
+    std::cout << "Total area: " << total_area( v ) << std::endl;
+}
+```
+
+## Construction and Assignment
+
+If we look at the
+
+```
+    v.push_back( Circle{ 1.0 } );
+```
+
+line, we can deduce that `variant<Rectangle, Circle>` can be (implicitly)
+constructed from `Circle` (and `Rectangle`), and indeed it can. It can also
+be assigned a `Circle` or a `Rectangle`:
+
+```
+variant<Rectangle, Circle> v = Circle{ 1.0 }; // v holds Circle
+v = Rectangle{ 2.0, 3.0 };                    // v now holds Rectangle
+```
+
+If we try to construct `variant<int, float>` from something that is neither
+`int` nor `float`, say, `(short)1`, the behavior is "as if" the `variant` has
+declared two constructors,
+
+```
+variant::variant(int x);
+variant::variant(float x);
+```
+
+and the standard overload resolution rules are used to pick the one that will
+be used. So `variant<int, float>((short)1)` will hold an `int`.
+
+## Inspecting the Value
+
+Putting values into a `variant` is easy, but taking them out is necessarily a
+bit more convoluted. It's not possible for `variant<int, float>` to define a
+member function `get() const`, because such a function will need its return
+type fixed at compile time, and whether the correct return type is `int` or
+`float` will only become known at run time.
+
+There are a few ways around that. First, there is the accessor member function
+
+```
+std::size_t variant::index() const noexcept;
+```
+
+that returns the zero-based index of the current type. For `variant<int,
+float>`, it will return `0` for `int` and `1` for `float`.
+
+Once we have the index, we can use the free function `get<N>` to obtain the
+value. Since we're passing the type index to `get`, it knows what to return.
+`get<0>(v)` will return `int`, and `get<1>(v)` will return `float`:
+
+```
+void f( variant<int, float> const& v )
+{
+    switch( v.index() )
+    {
+    case 0:
+
+        // use get<0>(v)
+        break;
+
+    case 1:
+
+        // use get<1>(v)
+        break;
+
+    default:
+
+        assert(false); // never happens
+    }
+}
+```
+
+If we call `get<0>(v)`, and `v.index()` is not currently `0`, an exception
+(of type `bad_variant_access`) will be thrown.
+
+An alternative approach is to use `get<int>(v)` or `get<float>(v)`. This
+works similarly.
+
+Another alternative that avoids the possibility of `bad_variant_access` is
+to use `get_if`. Instead of a reference to the contained value, it returns
+a pointer to it, returning `nullptr` to indicate type mismatch. `get_if`
+takes a pointer to the `variant`, so in our example we'll use something along
+the following lines:
+
+```
+void f( variant<int, float> const& v )
+{
+    if( int const * p = get_if<int>(&v) )
+    {
+        // use *p
+    }
+    else if( float const * p = get_if<float>(&v) )
+    {
+        // use *p
+    }
+    else
+    {
+        assert(false); // never happens
+    }
+}
+```
+
+## Visitation
+
+Last but not least, there's `visit`. `visit(f, v)` calls the a function object
+`f` with the value contained in the `variant` `v` and returns the result. When
+`v` is `variant<int, float>`, it will call `f` with either an `int` or a
+`float`. The function object must be prepared to accept both.
+
+In practice, this can be achieved by having the function take a type that can
+be passed either `int` or `float`, such as `double`:
+
+```
+double f( double x ) { return x; }
+
+double g( variant<int, float> const& v )
+{
+    return visit( f, v );
+}
+```
+
+By using a function object with an overloaded `operator()`:
+
+```
+struct F
+{
+    void operator()(int x) const { /* use x */ }
+    void operator()(float x) const { /* use x */ }
+};
+
+void g( variant<int, float> const& v )
+{
+    visit( F(), v );
+}
+```
+
+Or by using a polymorphic lambda, as we did in our `Circle`/`Rectangle`
+example:
+
+```
+void g( variant<int, float> const& v )
+{
+    visit( [&]( auto const& x ){ std::cout << x << std::endl; }, v );
+}
+```
+
+`visit` can also take more than one `variant`. `visit(f, v1, v2)` calls
+`f(x1, x2)`, where `x1` is the value contained in `v1` and `x2` is the value
+in `v2`.
+
+## Default Construction
+
+The default constructor of `variant` value-initializes the first type in
+the list. `variant<int, float>{}` holds `0` (of type `int`), and
+`variant<float, int>{}` holds `0.0f`.
+
+This is usually the desired behavior. However, in cases such as
+`variant<std::mutex, std::recursive_mutex>`, one might legitimately wish to
+avoid constructing a `std::mutex` by default. A provided type, `monostate`,
+can be used as the first type in those scenarios. `variant<monostate,
+std::mutex, std::recursive_mutex>` will default-construct a `monostate`,
+which is basically a no-op, as `monostate` is effectively an empty `struct`.

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/doc/variant2/reference.adoc

@@ -0,0 +1,984 @@
+////
+Copyright 2018-2021 Peter Dimov
+Distributed under the Boost Software License, Version 1.0.
+https://www.boost.org/LICENSE_1_0.txt
+////
+
+[#reference]
+# Reference
+:idprefix: ref_
+
+## <boost/variant2/variant.hpp>
+
+### Synopsis
+
+```
+namespace boost {
+namespace variant2 {
+
+// in_place_type
+
+template<class T> struct in_place_type_t {};
+template<class T> constexpr in_place_type_t<T> in_place_type{};
+
+// in_place_index
+
+template<std::size_t I> struct in_place_index_t {};
+template<std::size_t I> constexpr in_place_index_t<I> in_place_index{};
+
+// variant
+
+template<class... T> class variant;
+
+// variant_size
+
+template<class T> struct variant_size {};
+
+template<class T> struct variant_size<T const>: variant_size<T> {};
+template<class T> struct variant_size<T volatile>: variant_size<T> {};
+template<class T> struct variant_size<T const volatile>: variant_size<T> {};
+
+template<class T> struct variant_size<T&>: variant_size<T> {}; // extension
+template<class T> struct variant_size<T&&>: variant_size<T> {}; // extension
+
+template<class T>
+  inline constexpr size_t variant_size_v = variant_size<T>::value;
+
+template<class... T>
+  struct variant_size<variant<T...>>:
+    std::integral_constant<std::size_t, sizeof...(T)> {};
+
+// variant_alternative
+
+template<size_t I, class T> struct variant_alternative {};
+
+template<size_t I, class T> struct variant_alternative<I, T const>;
+template<size_t I, class T> struct variant_alternative<I, T volatile>;
+template<size_t I, class T> struct variant_alternative<I, T const volatile>;
+
+template<size_t I, class T> struct variant_alternative<I, T&>; // extension
+template<size_t I, class T> struct variant_alternative<I, T&&>; // extension
+
+template<size_t I, class T>
+  using variant_alternative_t = typename variant_alternative<I, T>::type;
+
+template<size_t I, class... T>
+  struct variant_alternative<I, variant<T...>>;
+
+// variant_npos
+
+constexpr std::size_t variant_npos = -1;
+
+// holds_alternative
+
+template<class U, class... T>
+  constexpr bool holds_alternative(const variant<T...>& v) noexcept;
+
+// get
+
+template<size_t I, class... T>
+  constexpr variant_alternative_t<I, variant<T...>>&
+    get(variant<T...>& v);
+template<size_t I, class... T>
+  constexpr variant_alternative_t<I, variant<T...>>&&
+    get(variant<T...>&& v);
+template<size_t I, class... T>
+  constexpr const variant_alternative_t<I, variant<T...>>&
+    get(const variant<T...>& v);
+template<size_t I, class... T>
+  constexpr const variant_alternative_t<I, variant<T...>>&&
+    get(const variant<T...>&& v);
+
+template<class U, class... T>
+  constexpr U& get(variant<T...>& v);
+template<class U, class... T>
+  constexpr U&& get(variant<T...>&& v);
+template<class U, class... T>
+  constexpr const U& get(const variant<T...>& v);
+template<class U, class... T>
+  constexpr const U&& get(const variant<T...>&& v);
+
+// get_if
+
+template<size_t I, class... T>
+  constexpr add_pointer_t<variant_alternative_t<I, variant<T...>>>
+    get_if(variant<T...>* v) noexcept;
+template<size_t I, class... T>
+  constexpr add_pointer_t<const variant_alternative_t<I, variant<T...>>>
+    get_if(const variant<T...>* v) noexcept;
+
+template<class U, class... T>
+  constexpr add_pointer_t<U>
+    get_if(variant<T...>* v) noexcept;
+template<class U, class... T>
+  constexpr add_pointer_t<const U>
+    get_if(const variant<T...>* v) noexcept;
+
+// unsafe_get (extension)
+
+template<size_t I, class... T>
+  constexpr variant_alternative_t<I, variant<T...>>&
+    unsafe_get(variant<T...>& v);
+template<size_t I, class... T>
+  constexpr variant_alternative_t<I, variant<T...>>&&
+    unsafe_get(variant<T...>&& v);
+template<size_t I, class... T>
+  constexpr const variant_alternative_t<I, variant<T...>>&
+    unsafe_get(const variant<T...>& v);
+template<size_t I, class... T>
+  constexpr const variant_alternative_t<I, variant<T...>>&&
+    unsafe_get(const variant<T...>&& v);
+
+// relational operators
+
+template<class... T>
+  constexpr bool operator==(const variant<T...>& v, const variant<T...>& w);
+template<class... T>
+  constexpr bool operator!=(const variant<T...>& v, const variant<T...>& w);
+template<class... T>
+  constexpr bool operator<(const variant<T...>& v, const variant<T...>& w);
+template<class... T>
+  constexpr bool operator>(const variant<T...>& v, const variant<T...>& w);
+template<class... T>
+  constexpr bool operator<=(const variant<T...>& v, const variant<T...>& w);
+template<class... T>
+  constexpr bool operator>=(const variant<T...>& v, const variant<T...>& w);
+
+// swap
+
+template<class... T>
+  void swap(variant<T...>& v, variant<T...>& w) noexcept( /*see below*/ );
+
+// visit
+
+template<class R = /*unspecified*/, class F, class... V>
+  constexpr /*see below*/ visit(F&& f, V&&... v);
+
+// visit_by_index (extension)
+
+template<class R = /*unspecified*/, class V, class... F>
+  constexpr /*see below*/ visit_by_index(V&& v, F&&.. f);
+
+// monostate
+
+struct monostate {};
+
+constexpr bool operator==(monostate, monostate) noexcept { return true; }
+constexpr bool operator!=(monostate, monostate) noexcept { return false; }
+constexpr bool operator<(monostate, monostate) noexcept { return false; }
+constexpr bool operator>(monostate, monostate) noexcept { return false; }
+constexpr bool operator<=(monostate, monostate) noexcept { return true; }
+constexpr bool operator>=(monostate, monostate) noexcept { return true; }
+
+// stream insertion (extension)
+
+template<class Ch, class Tr, class... T>
+  std::basic_ostream<Ch, Tr>&
+    operator<<( std::basic_ostream<Ch, Tr>& os, variant<T...> const& v );
+
+template<class Ch, class Tr>
+  std::basic_ostream<Ch, Tr>&
+    operator<<( std::basic_ostream<Ch, Tr>& os, monostate const& v );
+
+// bad_variant_access
+
+class bad_variant_access;
+
+} // namespace variant2
+} // namespace boost
+```
+
+### variant
+
+```
+namespace boost {
+namespace variant2 {
+
+template<class... T> class variant
+{
+public:
+
+  // constructors
+
+  constexpr variant() noexcept( /*see below*/ );
+
+  constexpr variant( variant const & r ) noexcept( /*see below*/ );
+  constexpr variant( variant&& r ) noexcept( /*see below*/ );
+
+  template<class U>
+    constexpr variant( U&& u ) noexcept( /*see below*/ );
+
+  template<class U, class... A>
+    constexpr explicit variant( in_place_type_t<U>, A&&... a );
+  template<class U, class V, class... A>
+    constexpr explicit variant( in_place_type_t<U>,
+      std::initializer_list<V> il, A&&... a );
+
+  template<size_t I, class... A>
+    constexpr explicit variant( in_place_index_t<I>, A&&... a );
+  template<size_t I, class V, class... A>
+    constexpr explicit variant( in_place_index_t<I>,
+      std::initializer_list<V> il, A&&... a );
+
+  // destructor
+
+  ~variant();
+
+  // assignment
+
+  constexpr variant& operator=( variant const & r ) noexcept( /*see below*/ );
+  constexpr variant& operator=( variant&& r ) noexcept( /*see below*/ );
+
+  template<class U> constexpr variant& operator=( U&& u ) noexcept( /*see below*/ );
+
+  // modifiers
+
+  template<class U, class... A>
+    constexpr U& emplace( A&&... a );
+  template<class U, class V, class... A>
+    constexpr U& emplace( std::initializer_list<V> il, A&&... a );
+
+  template<size_t I, class... A>
+    constexpr variant_alternative_t<I, variant<T...>>&
+      emplace( A&&... a );
+  template<size_t I, class V, class... A>
+    constexpr variant_alternative_t<I, variant<T...>>&
+      emplace( std::initializer_list<V> il, A&&... a );
+
+  // value status
+
+  constexpr bool valueless_by_exception() const noexcept;
+  constexpr size_t index() const noexcept;
+
+  // swap
+
+  void swap( variant& r ) noexcept( /*see below*/ );
+
+  // converting constructors (extension)
+
+  template<class... U> variant( variant<U...> const& r )
+    noexcept( /*see below*/ );
+
+  template<class... U> variant( variant<U...>&& r )
+    noexcept( /*see below*/ );
+
+  // subset (extension)
+
+  template<class... U> constexpr variant<U...> subset() & ;
+  template<class... U> constexpr variant<U...> subset() && ;
+  template<class... U> constexpr variant<U...> subset() const& ;
+  template<class... U> constexpr variant<U...> subset() const&& ;
+};
+
+} // namespace variant2
+} // namespace boost
+```
+
+In the descriptions that follow, let `i` be in the range `[0, sizeof...(T))`,
+and `Ti` be the `i`-th type in `T...`.
+
+#### Constructors
+
+```
+constexpr variant() noexcept( std::is_nothrow_default_constructible_v<T0> );
+```
+[none]
+* {blank}
++
+Effects: :: Constructs a `variant` holding a value-initialized value of
+  type `T0`.
+Ensures: :: `index() == 0`.
+Throws: :: Any exception thrown by the value-initialization of `T0`.
+Remarks: :: This function does not participate in overload resolution unless
+  `std::is_default_constructible_v<T0>` is `true`.
+
+```
+constexpr variant( variant const & w )
+  noexcept( mp_all<std::is_nothrow_copy_constructible<T>...>::value );
+```
+[none]
+* {blank}
++
+Effects: :: Initializes the variant to hold the same alternative and value as
+  `w`.
+Throws: :: Any exception thrown by the initialization of the contained value.
+Remarks: :: This function does not participate in overload resolution unless
+  `std::is_copy_constructible_v<Ti>` is `true` for all `i`.
+
+```
+constexpr variant( variant&& w )
+  noexcept( mp_all<std::is_nothrow_move_constructible<T>...>::value );
+```
+[none]
+* {blank}
++
+Effects: :: Initializes the variant to hold the same alternative and value as
+  `w`.
+Throws: :: Any exception thrown by the move-initialization of the contained
+  value.
+Remarks: :: This function does not participate in overload resolution unless
+  `std::is_move_constructible_v<Ti>` is `true` for all `i`.
+
+```
+template<class U> constexpr variant( U&& u ) noexcept(/*see below*/);
+```
+[none]
+* {blank}
++
+Let `Tj` be a type that is determined as follows: build an imaginary function
+`FUN(Ti)` for each alternative type `Ti`. The overload `FUN(Tj)` selected by
+overload resolution for the expression `FUN(std::forward<U>(u))` defines the
+alternative `Tj` which is the type of the contained value after construction.
+
+Effects: :: Initializes `*this` to hold the alternative type `Tj` and
+  initializes the contained value from `std::forward<U>(u)`.
+Ensures: :: `holds_alternative<Tj>(*this)`.
+Throws: :: Any exception thrown by the initialization of the contained value.
+Remarks: :: The expression inside `noexcept` is equivalent to
+`std::is_nothrow_constructible_v<Tj, U>`. This function does not participate in
+overload resolution unless
+- `sizeof...(T)` is nonzero,
+- `std::is_same_v<std::remove_cvref_t<U>, variant>` is `false`,
+- `std::remove_cvref_t<U>` is neither a specialization of `in_place_type_t` nor a
+specialization of `in_place_index_t`,
+- `std::is_constructible_v<Tj, U>` is `true`, and
+- the expression `FUN(std::forward<U>(u))` is well-formed.
+
+```
+template<class U, class... A>
+  constexpr explicit variant( in_place_type_t<U>, A&&... a );
+```
+[none]
+* {blank}
++
+Effects: :: Initializes the contained value of type `U` with the arguments
+  `std::forward<A>(a)...`.
+Ensures: :: `holds_alternative<U>(*this)`.
+Throws: :: Any exception thrown by the initialization of the contained value.
+Remarks: :: This function does not participate in overload resolution unless
+  there is exactly one occurrence of `U` in `T...` and
+  `std::is_constructible_v<U, A...>` is true.
+
+```
+template<class U, class V, class... A>
+  constexpr explicit variant( in_place_type_t<U>, std::initializer_list<V> il,
+    A&&... a );
+```
+[none]
+* {blank}
++
+Effects: :: Initializes the contained value of type `U` with the arguments `il`,
+  `std::forward<A>(a)...`.
+Ensures: :: `holds_alternative<U>(*this)`.
+Throws: :: Any exception thrown by the initialization of the contained value.
+Remarks: :: This function does not participate in overload resolution unless
+  there is exactly one occurrence of `U` in `T...` and
+  `std::is_constructible_v<U, initializer_list<V>&, A...>` is `true`.
+
+```
+template<size_t I, class... A>
+  constexpr explicit variant( in_place_index_t<I>, A&&... a );
+```
+[none]
+* {blank}
++
+Effects: :: Initializes the contained value of type `TI` with the arguments
+  `std::forward<A>(a)...`.
+Ensures: :: `index() == I`.
+Throws: :: Any exception thrown by the initialization of the contained value.
+Remarks: :: This function does not participate in overload resolution unless
+ `I < sizeof...(T)` and `std::is_constructible_v<TI, A...>` is `true`.
+
+```
+template<size_t I, class V, class... A>
+  constexpr explicit variant( in_place_index_t<I>, std::initializer_list<V> il,
+    A&&... a );
+```
+[none]
+* {blank}
++
+Effects: :: Initializes the contained value of type `TI` with the arguments
+  `il`, `std::forward<A>(a)...`.
+Ensures: :: `index() == I`.
+Throws: :: Any exception thrown by the initialization of the contained value.
+Remarks: :: This function does not participate in overload resolution unless
+ `I < sizeof...(T)` and
+ `std::is_constructible_v<TI, initializer_list<V>&, A...>` is `true`.
+
+#### Destructor
+
+```
+~variant();
+```
+[none]
+* {blank}
++
+Effects: ::
+  Destroys the currently contained value.
+
+#### Assignment
+
+```
+constexpr variant& operator=( const variant& r )
+  noexcept( mp_all<std::is_nothrow_copy_constructible<T>...>::value );
+```
+[none]
+* {blank}
++
+Let `j` be `r.index()`.
+
+Effects: :: `emplace<j>(get<j>(r))`.
+Returns: :: `*this`.
+Ensures: :: `index() == r.index()`.
+Remarks: :: This operator does not participate in overload resolution unless
+  `std::is_copy_constructible_v<Ti> && std::is_copy_assignable_v<Ti>` is
+  `true` for all `i`.
+
+```
+constexpr variant& operator=( variant&& r )
+  noexcept( mp_all<std::is_nothrow_move_constructible<T>...>::value );
+```
+[none]
+* {blank}
++
+Let `j` be `r.index()`.
+
+Effects: :: `emplace<j>(get<j>(std::move(r)))`.
+Returns: :: `*this`.
+Ensures: :: `index() == r.index()`.
+Remarks: :: This operator does not participate in overload resolution unless
+  `std::is_move_constructible_v<Ti> && std::is_move_assignable_v<Ti>` is
+  `true` for all `i`.
+
+```
+template<class U> constexpr variant& operator=( U&& u )
+  noexcept( /*see below*/ );
+```
+[none]
+* {blank}
++
+Let `Tj` be a type that is determined as follows: build an imaginary function
+`FUN(Ti)` for each alternative type `Ti`. The overload `FUN(Tj)` selected by
+overload resolution for the expression `FUN(std::forward<U>(u))` defines the
+alternative `Tj` which is the type of the contained value after construction.
+
+Effects: :: `emplace<j>(std::forward<U>(u))`.
+Returns: :: `*this`.
+Ensures: :: `index() == j`.
+Remarks: ::
+  The expression inside `noexcept` is `std::is_nothrow_constructible_v<Tj, U&&>`.
+  This operator does not participate in overload resolution unless
+  - `std::is_same_v<std::remove_cvref_t<T>, variant>` is `false`,
+  - `std::is_constructible_v<Tj, U&&> && std::is_assignable_v<Tj&, U&&>` is
+    `true`,  and
+  - the expression `FUN(std::forward<U>(u))` (with `FUN` being the
+    above-mentioned set of imaginary functions) is well-formed.
+
+#### Modifiers
+
+```
+template<class U, class... A>
+  constexpr U& emplace( A&&... a );
+```
+[none]
+* {blank}
++
+Let `I` be the zero-based index of `U` in `T...`.
+
+Effects: :: Equivalent to: `return emplace<I>(std::forward<A>(a)...);`
+Remarks: ::
+  This function shall not participate in overload resolution unless
+  `std::is_constructible_v<U, A&&...>` is `true` and `U` occurs exactly once
+  in `T...`.
+
+```
+template<class U, class V, class... A>
+  constexpr U& emplace( std::initializer_list<V> il, A&&... a );
+```
+[none]
+* {blank}
++
+Let `I` be the zero-based index of `U` in `T...`.
+
+Effects: :: Equivalent to: `return emplace<I>(il, std::forward<A>(a)...);`
+Remarks: ::
+  This function shall not participate in overload resolution unless
+  `std::is_constructible_v<U, std::initializer_list<V>&, A&&...>` is `true`
+  and `U` occurs exactly once in `T...`.
+
+
+```
+template<size_t I, class... A>
+  constexpr variant_alternative_t<I, variant<T...>>&
+    emplace( A&&... a );
+```
+[none]
+* {blank}
++
+Requires: :: `I < sizeof...(T)`.
+Effects:  ::
+  Initializes a new contained value as if using the expression
+  `Ti(std::forward<A>(a)...)`, then destroys the currently contained value.
+Ensures:  :: `index() == I`.
+Returns:  :: A reference to the new contained value.
+Throws:   ::
+  Nothing unless the initialization of the new contained value throws.
+Exception Safety: :: Strong. On exception, the contained value is unchanged.
+Remarks:  ::
+  This function shall not participate in overload resolution unless
+  `std::is_constructible_v<Ti, A&&...>` is `true`.
+
+```
+template<size_t I, class V, class... A>
+  constexpr variant_alternative_t<I, variant<T...>>&
+    emplace( std::initializer_list<V> il, A&&... a );
+```
+[none]
+* {blank}
++
+Requires: :: `I < sizeof...(T)`.
+Effects:  ::
+  Initializes a new contained value as if using the expression
+  `Ti(il, std::forward<A>(a)...)`, then destroys the currently contained value.
+Ensures:  :: `index() == I`.
+Returns:  :: A reference to the new contained value.
+Throws:   ::
+  Nothing unless the initialization of the new contained value throws.
+Exception Safety: :: Strong. On exception, the contained value is unchanged.
+Remarks:  ::
+  This function shall not participate in overload resolution unless
+  `std::is_constructible_v<Ti, std::initializer_list<V>&, A&&...>` is `true`.
+
+#### Value Status
+
+```
+constexpr bool valueless_by_exception() const noexcept;
+```
+[none]
+* {blank}
++
+Returns:  :: `false`.
+
+NOTE: This function is provided purely for compatibility with `std::variant`.
+
+```
+constexpr size_t index() const noexcept;
+```
+[none]
+* {blank}
++
+Returns:  ::
+  The zero-based index of the active alternative.
+
+#### Swap
+
+```
+void swap( variant& r ) noexcept( mp_all<std::is_nothrow_move_constructible<T>...,
+  is_nothrow_swappable<T>...>::value );
+```
+[none]
+* {blank}
++
+Effects:  ::
+- If `index() == r.index()`, calls `swap(get<I>(*this), get<I>(r))`,
+  where `I` is `index()`.
+- Otherwise, as if
+  `variant tmp(std::move(*this)); *this = std::move(r); r = std::move(tmp);`
+
+#### Converting Constructors (extension)
+
+```
+template<class... U> variant( variant<U...> const& r )
+  noexcept( mp_all<std::is_nothrow_copy_constructible<U>...>::value );
+```
+[none]
+* {blank}
++
+Effects: :: Initializes the contained value from the contained value of `r`.
+Throws:  :: Any exception thrown by the initialization of the contained value.
+Remarks: :: This function does not participate in overload resolution unless
+  all types in `U...` are in `T...` and
+  `std::is_copy_constructible_v<Ui>::value` is `true` for all `Ui`.
+
+```
+template<class... U> variant( variant<U...>&& r )
+  noexcept( mp_all<std::is_nothrow_move_constructible<U>...>::value );
+```
+[none]
+* {blank}
++
+Effects: :: Initializes the contained value from the contained value of
+  `std::move(r)`.
+Throws:  :: Any exception thrown by the initialization of the contained value.
+Remarks: :: This function does not participate in overload resolution unless
+  all types in `U...` are in `T...` and
+  `std::is_move_constructible_v<Ui>::value` is `true` for all `Ui`.
+
+#### Subset (extension)
+
+```
+template<class... U> constexpr variant<U...> subset() & ;
+```
+```
+template<class... U> constexpr variant<U...> subset() const& ;
+```
+[none]
+* {blank}
++
+Returns: :: A `variant<U...>` whose contained value is copy-initialized from
+  the contained value of `*this` and has the same type.
+Throws:  ::
+- If the active alternative of `*this` is not among the types in `U...`,
+  `bad_variant_access`.
+- Otherwise, any exception thrown by the initialization of the contained value.
+Remarks: :: This function does not participate in overload resolution unless
+  all types in `U...` are in `T...` and
+  `std::is_copy_constructible_v<Ui>::value` is `true` for all `Ui`.
+
+```
+template<class... U> constexpr variant<U...> subset() && ;
+```
+```
+template<class... U> constexpr variant<U...> subset() const&& ;
+```
+[none]
+* {blank}
++
+Returns: :: A `variant<U...>` whose contained value is move-initialized from
+  the contained value of `*this` and has the same type.
+Throws:  ::
+- If the active alternative of `*this` is not among the types in `U...`,
+  `bad_variant_access`.
+- Otherwise, any exception thrown by the initialization of the contained value.
+Remarks: :: This function does not participate in overload resolution unless
+  all types in `U...` are in `T...` and
+  `std::is_move_constructible_v<Ui>::value` is `true` for all `Ui`.
+
+### variant_alternative
+
+```
+template<size_t I, class T> struct variant_alternative<I, T const>;
+```
+```
+template<size_t I, class T> struct variant_alternative<I, T volatile>;
+```
+```
+template<size_t I, class T> struct variant_alternative<I, T const volatile>;
+```
+```
+template<size_t I, class T> struct variant_alternative<I, T&>; // extension
+```
+```
+template<size_t I, class T> struct variant_alternative<I, T&&>; // extension
+```
+[none]
+* {blank}
++
+--
+If `typename variant_alternative<I, T>::type` exists and is `U`,
+
+* `variant_alternative<I, T const>::type` is `U const`;
+* `variant_alternative<I, T volatile>::type` is `U volatile`;
+* `variant_alternative<I, T const volatile>::type` is `U const volatile`.
+* `variant_alternative<I, T&>::type` is `U&`.
+* `variant_alternative<I, T&&>::type` is `U&&`.
+
+Otherwise, these structs have no member `type`.
+--
+
+```
+template<size_t I, class... T>
+  struct variant_alternative<I, variant<T...>>;
+```
+[none]
+* {blank}
++
+When `I < sizeof...(T)`, the nested type `type` is an alias for the `I`-th
+(zero-based) type in `T...`. Otherwise, there is no member `type`.
+
+### holds_alternative
+
+```
+template<class U, class... T>
+  constexpr bool holds_alternative(const variant<T...>& v) noexcept;
+```
+[none]
+* {blank}
++
+Requires: :: The type `U` occurs exactly once in `T...`. Otherwise, the
+  program is ill-formed.
+Returns:  :: `true` if `index()` is equal to the zero-based index of `U`
+  in `T...`.
+
+### get
+
+```
+template<size_t I, class... T>
+  constexpr variant_alternative_t<I, variant<T...>>&
+    get(variant<T...>& v);
+```
+```
+template<size_t I, class... T>
+  constexpr variant_alternative_t<I, variant<T...>>&&
+    get(variant<T...>&& v);
+```
+```
+template<size_t I, class... T>
+  constexpr const variant_alternative_t<I, variant<T...>>&
+    get(const variant<T...>& v);
+```
+```
+template<size_t I, class... T>
+  constexpr const variant_alternative_t<I, variant<T...>>&&
+    get(const variant<T...>&& v);
+```
+[none]
+* {blank}
++
+Effects: :: If `v.index()` is `I`, returns a reference to the object stored in
+  the variant. Otherwise, throws `bad_variant_access`.
+Remarks: :: These functions do not participate in overload resolution
+  unless `I` < `sizeof...(T)`.
+
+```
+template<class U, class... T>
+  constexpr U& get(variant<T...>& v);
+```
+```
+template<class U, class... T>
+  constexpr U&& get(variant<T...>&& v);
+```
+```
+template<class U, class... T>
+  constexpr const U& get(const variant<T...>& v);
+```
+```
+template<class U, class... T>
+  constexpr const U&& get(const variant<T...>&& v);
+```
+[none]
+* {blank}
++
+Requires: :: The type `U` occurs exactly once in `T...`. Otherwise, the
+  program is ill-formed.
+Effects:  :: If `v` holds a value of type `U`, returns a reference to that value.
+  Otherwise, throws `bad_variant_access`.
+
+### get_if
+
+```
+template<size_t I, class... T>
+  constexpr add_pointer_t<variant_alternative_t<I, variant<T...>>>
+    get_if(variant<T...>* v) noexcept;
+```
+```
+template<size_t I, class... T>
+  constexpr add_pointer_t<const variant_alternative_t<I, variant<T...>>>
+    get_if(const variant<T...>* v) noexcept;
+```
+[none]
+* {blank}
++
+Effects:  :: A pointer to the value stored in the variant, if
+  `v != nullptr && v\->index() == I`. Otherwise, `nullptr`.
+Remarks: :: These functions do not participate in overload resolution
+  unless `I` < `sizeof...(T)`.
+
+```
+template<class U, class... T>
+  constexpr add_pointer_t<U>
+    get_if(variant<T...>* v) noexcept;
+```
+```
+template<class U, class... T>
+  constexpr add_pointer_t<const U>
+    get_if(const variant<T...>* v) noexcept;
+```
+[none]
+* {blank}
++
+Requires: :: The type `U` occurs exactly once in `T...`. Otherwise, the
+  program is ill-formed.
+Effects:  :: Equivalent to: `return get_if<I>(v);` with `I` being
+  the zero-based index of `U` in `T...`.
+
+### unsafe_get (extension)
+
+```
+template<size_t I, class... T>
+  constexpr variant_alternative_t<I, variant<T...>>&
+    unsafe_get(variant<T...>& v);
+```
+```
+template<size_t I, class... T>
+  constexpr variant_alternative_t<I, variant<T...>>&&
+    unsafe_get(variant<T...>&& v);
+```
+```
+template<size_t I, class... T>
+  constexpr const variant_alternative_t<I, variant<T...>>&
+    unsafe_get(const variant<T...>& v);
+```
+```
+template<size_t I, class... T>
+  constexpr const variant_alternative_t<I, variant<T...>>&&
+    unsafe_get(const variant<T...>&& v);
+```
+[none]
+* {blank}
++
+Requires: :: `v.index() == I`.
+Returns: :: a reference to the object stored in the variant.
+
+### Relational Operators
+
+```
+template<class... T>
+  constexpr bool operator==(const variant<T...>& v, const variant<T...>& w);
+```
+[none]
+* {blank}
++
+Returns: :: `v.index() == w.index() && get<I>(v) == get<I>(w)`, where `I`
+  is `v.index()`.
+
+```
+template<class... T>
+  constexpr bool operator!=(const variant<T...>& v, const variant<T...>& w);
+```
+[none]
+* {blank}
++
+Returns: :: `!(v == w)`.
+
+```
+template<class... T>
+  constexpr bool operator<(const variant<T...>& v, const variant<T...>& w);
+```
+[none]
+* {blank}
++
+Returns: :: `v.index() < w.index() || (v.index() == w.index() && get<I>(v) < get<I>(w))`,
+  where `I` is `v.index()`.
+
+```
+template<class... T>
+  constexpr bool operator>(const variant<T...>& v, const variant<T...>& w);
+```
+[none]
+* {blank}
++
+Returns: :: `w < v`.
+
+```
+template<class... T>
+  constexpr bool operator<=(const variant<T...>& v, const variant<T...>& w);
+```
+[none]
+* {blank}
++
+Returns: :: `v.index() < w.index() || (v.index() == w.index() && get<I>(v) \<= get<I>(w))`,
+  where `I` is `v.index()`.
+
+```
+template<class... T>
+  constexpr bool operator>=(const variant<T...>& v, const variant<T...>& w);
+```
+[none]
+* {blank}
++
+Returns: ::
+  `w \<= v`.
+
+### swap
+
+```
+template<class... T>
+  void swap(variant<T...>& v, variant<T...>& w) noexcept( /*see below*/ );
+```
+[none]
+* {blank}
++
+Effects: ::
+  Equivalent to `v.swap(w)`.
+
+### visit
+
+```
+template<class R = /*unspecified*/, class F, class... V>
+  constexpr /*see below*/ visit(F&& f, V&&... v);
+```
+[none]
+* {blank}
++
+Returns: :: `std::forward<F>(f)(get<I>(std::forward<V>(v))...)`, where
+  `I...` is `v.index()...`.
+Remarks: :: If `R` is given explicitly, as in `visit<int>`, the return
+  type is `R`. Otherwise, it's deduced from `F`. All possible applications
+  of `F` to the variant alternatives must have the same return type for
+  this deduction to succeed.
+
+### visit_by_index (extension)
+
+```
+template<class R = /*unspecified*/, class V, class... F>
+  constexpr /*see below*/ visit_by_index(V&& v, F&&.. f);
+```
+[none]
+* {blank}
++
+Requires: :: `variant_size<V>::value == sizeof...(F)`, or the program is ill-formed.
+Returns: :: `std::forward<Fi>(fi)(get<i>(std::forward<V>(v)))`, where
+  `i` is `v.index()` and `Fi` and `fi` are the `i`-th element of `F...` and `f...`
+  accordingly.
+Remarks: :: If `R` is given explicitly, as in `visit_by_index<int>`, the return
+  type is `R`. Otherwise, it's deduced from `F...` and `V`. All the applications
+  of `Fi` to the corresponding variant alternatives must have the same return type
+  for this deduction to succeed.
+
+### Stream Insertion (extension)
+```
+template<class Ch, class Tr, class... T>
+  std::basic_ostream<Ch, Tr>&
+    operator<<( std::basic_ostream<Ch, Tr>& os, variant<T...> const& v );
+```
+[none]
+* {blank}
++
+Requires: ::
+  `sizeof...(T) != 0`.
+Returns: ::
+  `os << get<I>(v)`, where `I` is `v.index()`.
+
+```
+template<class Ch, class Tr>
+  std::basic_ostream<Ch, Tr>&
+    operator<<( std::basic_ostream<Ch, Tr>& os, monostate const& v );
+```
+[none]
+* {blank}
++
+Effects: ::
+  `os << "monostate"`.
+Returns: ::
+  `os`.
+
+### bad_variant_access
+
+```
+class bad_variant_access: public std::exception
+{
+public:
+
+    bad_variant_access() noexcept = default;
+
+    char const * what() const noexcept
+    {
+        return "bad_variant_access";
+    }
+};
+```
+
+## <boost/variant2.hpp>
+
+This convenience header includes `<boost/variant2/variant.hpp>`.

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/include/boost/variant2.hpp

@@ -0,0 +1,10 @@
+#ifndef BOOST_VARIANT2_HPP_INCLUDED
+#define BOOST_VARIANT2_HPP_INCLUDED
+
+// Copyright 2021 Peter Dimov.
+// Distributed under the Boost Software License, Version 1.0.
+// https://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/variant2/variant.hpp>
+
+#endif // #ifndef BOOST_VARIANT2_HPP_INCLUDED

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/index.html

@@ -0,0 +1,15 @@
+<html>
+<head>
+<meta http-equiv="refresh" content="0; URL=doc/html/variant2.html">
+</head>
+<body>
+Automatic redirection failed, please go to
+<a href="doc/html/variant2.html">doc/html/variant2.html</a>.
+</body>
+</html>
+<!--
+  Copyright Beman Dawes, 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
+-->

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/meta/libraries.json

@@ -0,0 +1,15 @@
+{
+    "key": "variant2",
+    "name": "Variant2",
+    "authors": [
+        "Peter Dimov"
+    ],
+    "maintainers": [
+        "Peter Dimov <pdimov -at- gmail.com>"
+    ],
+    "description": "A never-valueless, strong guarantee implementation of std::variant.",
+    "category": [
+        "Containers", "Data"
+    ],
+    "cxxstd": "11"
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/CMakeLists.txt

@@ -0,0 +1,11 @@
+# Copyright 2018, 2019 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(BoostTestJamfile OPTIONAL RESULT_VARIABLE HAVE_BOOST_TEST)
+
+if(HAVE_BOOST_TEST)
+
+boost_test_jamfile(FILE Jamfile LINK_LIBRARIES Boost::variant2 Boost::core Boost::container_hash)
+
+endif()

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/Jamfile

@@ -0,0 +1,128 @@
+#  Boost.Variant2 Library Test Jamfile
+#
+#  Copyright 2015-2019 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
+
+import testing ;
+import ../../config/checks/config : requires ;
+
+project
+  : default-build
+
+    <warnings>extra
+
+  : requirements
+
+    [ requires cxx11_variadic_templates cxx11_template_aliases cxx11_decltype cxx11_constexpr ]
+
+    <toolset>msvc:<warnings-as-errors>on
+    <toolset>gcc:<warnings-as-errors>on
+    <toolset>clang:<warnings-as-errors>on
+  ;
+
+run quick.cpp ;
+
+run variant_size.cpp ;
+run variant_alternative.cpp ;
+
+run variant_holds_alternative.cpp ;
+compile variant_holds_alternative_cx.cpp : <toolset>msvc-14.0:<build>no ;
+
+run variant_get_by_index.cpp ;
+compile variant_get_by_index_cx.cpp : <toolset>msvc-14.0:<build>no ;
+
+run variant_get_by_type.cpp ;
+compile variant_get_by_type_cx.cpp : <toolset>msvc-14.0:<build>no ;
+
+run variant_default_construct.cpp ;
+compile variant_default_construct_cx.cpp : <toolset>msvc-14.0:<build>no ;
+
+run variant_copy_construct.cpp ;
+compile variant_copy_construct_cx.cpp : <toolset>msvc-14.0:<build>no ;
+
+run variant_move_construct.cpp ;
+compile variant_move_construct_cx.cpp : [ requires cxx14_constexpr ] ;
+
+run variant_value_construct.cpp ;
+compile variant_value_construct_cx.cpp : <toolset>msvc-14.0:<build>no ;
+
+run variant_in_place_index_construct.cpp ;
+compile variant_in_place_index_construct_cx.cpp : <toolset>msvc-14.0:<build>no ;
+
+run variant_in_place_type_construct.cpp ;
+compile variant_in_place_type_construct_cx.cpp : <toolset>msvc-14.0:<build>no ;
+
+run variant_copy_assign.cpp ;
+compile variant_copy_assign_cx.cpp : [ requires cxx14_constexpr ] ;
+
+run variant_move_assign.cpp ;
+compile variant_move_assign_cx.cpp : [ requires cxx14_constexpr ] ;
+
+run variant_value_assign.cpp ;
+compile variant_value_assign_cx.cpp : [ requires cxx14_constexpr ] ;
+
+run variant_emplace_index.cpp ;
+compile variant_emplace_index_cx.cpp : [ requires cxx14_constexpr ] ;
+
+run variant_emplace_type.cpp ;
+compile variant_emplace_type_cx.cpp : [ requires cxx14_constexpr ] ;
+
+run variant_swap.cpp ;
+
+run variant_eq_ne.cpp ;
+compile variant_eq_ne_cx.cpp : [ requires cxx14_constexpr ] ;
+
+run variant_lt_gt.cpp ;
+compile variant_lt_gt_cx.cpp : [ requires cxx14_constexpr ] ;
+
+run variant_destroy.cpp ;
+run variant_visit.cpp ;
+
+run variant_convert_construct.cpp ;
+run variant_subset.cpp ;
+run variant_valueless.cpp ;
+
+run variant_copy_construct_throw.cpp ;
+run variant_move_construct_throw.cpp ;
+run variant_convert_construct_throw.cpp ;
+
+run variant_copy_assign_throw.cpp ;
+run variant_move_assign_throw.cpp ;
+
+local NX =
+    <exception-handling>off
+    <toolset>msvc:<cxxflags>/wd4530
+    <toolset>msvc:<cxxflags>/wd4577
+    ;
+
+run variant_get_by_index.cpp throw_exception.cpp : : : $(NX) : variant_get_by_index_nx ;
+compile variant_get_by_index_cx.cpp : $(NX) <toolset>msvc-14.0:<build>no : variant_get_by_index_cx_nx ;
+
+run variant_get_by_type.cpp throw_exception.cpp : : : $(NX) : variant_get_by_type_nx ;
+compile variant_get_by_type_cx.cpp : $(NX) <toolset>msvc-14.0:<build>no : variant_get_by_type_cx_nx ;
+
+run variant_subset.cpp throw_exception.cpp : : : $(NX) : variant_subset_nx ;
+
+run variant_hash.cpp ;
+
+run variant_trivial.cpp ;
+run variant_special.cpp ;
+
+run variant_visit_derived.cpp ;
+
+run variant_many_types.cpp ;
+
+run variant_visit_r.cpp : : :
+    <toolset>gcc,<target-os>windows:<variant>release
+    <toolset>gcc,<target-os>cygwin:<variant>release
+    ;
+
+compile variant_derived_construct.cpp ;
+
+run variant_visit_by_index.cpp ;
+
+run variant_ostream_insert.cpp ;
+run is_output_streamable.cpp ;

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/cmake_install_test/CMakeLists.txt

@@ -0,0 +1,17 @@
+# Copyright 2018, 2019 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
+
+cmake_minimum_required(VERSION 3.5...3.16)
+
+project(cmake_install_test LANGUAGES CXX)
+
+find_package(boost_variant2 REQUIRED)
+
+add_executable(quick ../quick.cpp)
+target_link_libraries(quick Boost::variant2)
+
+enable_testing()
+add_test(quick quick)
+
+add_custom_target(check COMMAND ${CMAKE_CTEST_COMMAND} --output-on-failure -C $<CONFIG>)

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/cmake_subdir_test/CMakeLists.txt

@@ -0,0 +1,21 @@
+# Copyright 2018, 2019 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
+
+cmake_minimum_required(VERSION 3.5...3.16)
+
+project(cmake_subdir_test LANGUAGES CXX)
+
+add_subdirectory(../.. boostorg/variant2)
+
+add_subdirectory(../../../assert boostorg/assert)
+add_subdirectory(../../../config boostorg/config)
+add_subdirectory(../../../mp11 boostorg/mp11)
+
+add_executable(quick ../quick.cpp)
+target_link_libraries(quick Boost::variant2)
+
+enable_testing()
+add_test(quick quick)
+
+add_custom_target(check COMMAND ${CMAKE_CTEST_COMMAND} --output-on-failure -C $<CONFIG>)

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/is_output_streamable.cpp

@@ -0,0 +1,41 @@
+// Copyright 2021 Peter Dimov
+// Distributed under the Boost Software License, Version 1.0.
+// https://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/variant2/variant.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+#include <ostream>
+#include <string>
+
+struct X
+{
+};
+
+struct Y
+{
+};
+
+std::ostream& operator<<( std::ostream& os, Y const& /*y*/ )
+{
+    os << "Y()";
+    return os;
+}
+
+int main()
+{
+    BOOST_TEST_TRAIT_TRUE((boost::variant2::detail::is_output_streamable<std::ostream, int>));
+    BOOST_TEST_TRAIT_TRUE((boost::variant2::detail::is_output_streamable<std::ostream, float>));
+    BOOST_TEST_TRAIT_TRUE((boost::variant2::detail::is_output_streamable<std::ostream, std::string>));
+    BOOST_TEST_TRAIT_FALSE((boost::variant2::detail::is_output_streamable<std::ostream, void>));
+    BOOST_TEST_TRAIT_FALSE((boost::variant2::detail::is_output_streamable<std::ostream, X>));
+    BOOST_TEST_TRAIT_TRUE((boost::variant2::detail::is_output_streamable<std::ostream, Y>));
+
+    BOOST_TEST_TRAIT_TRUE((boost::variant2::detail::is_output_streamable<std::ostream, boost::variant2::monostate>));
+
+    BOOST_TEST_TRAIT_TRUE((boost::variant2::detail::is_output_streamable<std::ostream, boost::variant2::variant<int, float, std::string>>));
+    BOOST_TEST_TRAIT_FALSE((boost::variant2::detail::is_output_streamable<std::ostream, boost::variant2::variant<int, float, X>>));
+    BOOST_TEST_TRAIT_TRUE((boost::variant2::detail::is_output_streamable<std::ostream, boost::variant2::variant<int, float, Y>>));
+    BOOST_TEST_TRAIT_TRUE((boost::variant2::detail::is_output_streamable<std::ostream, boost::variant2::variant<boost::variant2::monostate, int, float>>));
+
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/quick.cpp

@@ -0,0 +1,13 @@
+// Copyright 2019 Peter Dimov.
+// Distributed under the Boost Software License, Version 1.0.
+// https://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/variant2.hpp>
+
+using namespace boost::variant2;
+
+int main()
+{
+    variant<float, int> v( 2 );
+    return get<1>( v ) == 2? 0: 1;
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/throw_exception.cpp

@@ -0,0 +1,20 @@
+
+// Copyright 2019 Peter Dimov.
+//
+// Distributed under the Boost Software License, Version 1.0.
+// http://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/config.hpp>
+#include <exception>
+#include <cstdio>
+
+namespace boost
+{
+
+void throw_exception( std::exception const & e )
+{
+    std::fprintf( stderr, "Exception: %s\n", e.what() );
+    std::terminate();
+}
+
+} // namespace boost

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_alternative.cpp

@@ -0,0 +1,154 @@
+
+// Copyright 2017 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/variant2/variant.hpp>
+#include <boost/mp11.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+#include <type_traits>
+#include <cstddef>
+
+using namespace boost::variant2;
+using namespace boost::mp11;
+
+template<class I, class T> using var_alt_t = variant_alternative_t<I::value, T>;
+
+int main()
+{
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<void>>, void>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<void> const>, void const>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<void> volatile>, void volatile>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<void> const volatile>, void const volatile>));
+
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<char>&>, char&>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<char> const&>, char const&>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<char>&&>, char&&>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<char> const&&>, char const&&>));
+
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<void, int>>, void>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<void, int> const>, void const>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<void, int> volatile>, void volatile>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<void, int> const volatile>, void const volatile>));
+
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<char, int>&>, char&>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<char, int> const&>, char const&>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<char, int>&&>, char&&>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<char, int> const&&>, char const&&>));
+
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<1, variant<void, int>>, int>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<1, variant<void, int> const>, int const>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<1, variant<void, int> volatile>, int volatile>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<1, variant<void, int> const volatile>, int const volatile>));
+
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<1, variant<void, int>&>, int&>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<1, variant<void, int> const&>, int const&>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<1, variant<void, int>&&>, int&&>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<1, variant<void, int> const&&>, int const&&>));
+
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<void, int, float>>, void>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<void, int, float> const>, void const>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<void, int, float> volatile>, void volatile>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<void, int, float> const volatile>, void const volatile>));
+
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<char, int, float>&>, char&>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<char, int, float> const&>, char const&>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<char, int, float>&&>, char&&>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<char, int, float> const&&>, char const&&>));
+
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<1, variant<void, int, float>>, int>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<1, variant<void, int, float> const>, int const>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<1, variant<void, int, float> volatile>, int volatile>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<1, variant<void, int, float> const volatile>, int const volatile>));
+
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<1, variant<void, int, float>&>, int&>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<1, variant<void, int, float> const&>, int const&>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<1, variant<void, int, float>&&>, int&&>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<1, variant<void, int, float> const&&>, int const&&>));
+
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<2, variant<void, int, float>>, float>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<2, variant<void, int, float> const>, float const>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<2, variant<void, int, float> volatile>, float volatile>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<2, variant<void, int, float> const volatile>, float const volatile>));
+
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<2, variant<void, int, float>&>, float&>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<2, variant<void, int, float> const&>, float const&>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<2, variant<void, int, float>&&>, float&&>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<2, variant<void, int, float> const&&>, float const&&>));
+
+    variant_alternative<0, void>();
+    variant_alternative<0, void const>();
+    variant_alternative<0, void volatile>();
+    variant_alternative<0, void const volatile>();
+
+    variant_alternative<0, int&>();
+    variant_alternative<0, int const&>();
+    variant_alternative<0, int&&>();
+    variant_alternative<0, int const&&>();
+
+    variant_alternative<0, variant<>>();
+    variant_alternative<0, variant<> const>();
+    variant_alternative<0, variant<> volatile>();
+    variant_alternative<0, variant<> const volatile>();
+
+    variant_alternative<0, variant<>&>();
+    variant_alternative<0, variant<> const&>();
+    variant_alternative<0, variant<>&&>();
+    variant_alternative<0, variant<> const&&>();
+
+    variant_alternative<1, variant<int>>();
+    variant_alternative<1, variant<int> const>();
+    variant_alternative<1, variant<int> volatile>();
+    variant_alternative<1, variant<int> const volatile>();
+
+    variant_alternative<1, variant<int>&>();
+    variant_alternative<1, variant<int> const&>();
+    variant_alternative<1, variant<int>&&>();
+    variant_alternative<1, variant<int> const&&>();
+
+    BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<0>, void>));
+    BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<0>, void const>));
+    BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<0>, void volatile>));
+    BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<0>, void const volatile>));
+
+    BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<0>, int&>));
+    BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<0>, int const&>));
+    BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<0>, int&&>));
+    BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<0>, int const&&>));
+
+    BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<0>, variant<>>));
+    BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<0>, variant<> const>));
+    BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<0>, variant<> volatile>));
+    BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<0>, variant<> const volatile>));
+
+    BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<0>, variant<>&>));
+    BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<0>, variant<> const&>));
+    BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<0>, variant<>&&>));
+    BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<0>, variant<> const&&>));
+
+    BOOST_TEST_TRAIT_TRUE((mp_valid<var_alt_t, mp_size_t<0>, variant<int>>));
+    BOOST_TEST_TRAIT_TRUE((mp_valid<var_alt_t, mp_size_t<0>, variant<int> const>));
+    BOOST_TEST_TRAIT_TRUE((mp_valid<var_alt_t, mp_size_t<0>, variant<int> volatile>));
+    BOOST_TEST_TRAIT_TRUE((mp_valid<var_alt_t, mp_size_t<0>, variant<int> const volatile>));
+
+    BOOST_TEST_TRAIT_TRUE((mp_valid<var_alt_t, mp_size_t<0>, variant<int>&>));
+    BOOST_TEST_TRAIT_TRUE((mp_valid<var_alt_t, mp_size_t<0>, variant<int> const&>));
+    BOOST_TEST_TRAIT_TRUE((mp_valid<var_alt_t, mp_size_t<0>, variant<int>&&>));
+    BOOST_TEST_TRAIT_TRUE((mp_valid<var_alt_t, mp_size_t<0>, variant<int> const&&>));
+
+    BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<1>, variant<int>>));
+    BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<1>, variant<int> const>));
+    BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<1>, variant<int> volatile>));
+    BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<1>, variant<int> const volatile>));
+
+    BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<1>, variant<int>&>));
+    BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<1>, variant<int> const&>));
+    BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<1>, variant<int>&&>));
+    BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<1>, variant<int> const&&>));
+
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_convert_construct.cpp

@@ -0,0 +1,175 @@
+
+// Copyright 2017 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/variant2/variant.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+#include <type_traits>
+#include <utility>
+#include <string>
+
+using namespace boost::variant2;
+
+#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
+
+struct X1
+{
+    int v;
+
+    X1(): v(0) {}
+    explicit X1(int v): v(v) {}
+    X1(X1 const& r): v(r.v) {}
+    X1(X1&& r): v(r.v) {}
+    X1& operator=( X1 const& r ) { v = r.v; return *this; }
+    X1& operator=( X1&& r ) { v = r.v; return *this; }
+};
+
+inline bool operator==( X1 const& a, X1 const& b ) { return a.v == b.v; }
+
+STATIC_ASSERT( !std::is_nothrow_default_constructible<X1>::value );
+STATIC_ASSERT( !std::is_nothrow_copy_constructible<X1>::value );
+STATIC_ASSERT( !std::is_nothrow_move_constructible<X1>::value );
+STATIC_ASSERT( !std::is_nothrow_copy_assignable<X1>::value );
+STATIC_ASSERT( !std::is_nothrow_move_assignable<X1>::value );
+
+struct X2
+{
+    int v;
+
+    X2(): v(0) {}
+    explicit X2(int v): v(v) {}
+    X2(X2 const& r): v(r.v) {}
+    X2(X2&& r): v(r.v) {}
+    X2& operator=( X2 const& r ) { v = r.v; return *this; }
+    X2& operator=( X2&& r ) { v = r.v; return *this; }
+};
+
+inline bool operator==( X2 const& a, X2 const& b ) { return a.v == b.v; }
+
+STATIC_ASSERT( !std::is_nothrow_default_constructible<X2>::value );
+STATIC_ASSERT( !std::is_nothrow_copy_constructible<X2>::value );
+STATIC_ASSERT( !std::is_nothrow_move_constructible<X2>::value );
+STATIC_ASSERT( !std::is_nothrow_copy_assignable<X2>::value );
+STATIC_ASSERT( !std::is_nothrow_move_assignable<X2>::value );
+
+int main()
+{
+    {
+        variant<int> v( 1 );
+
+        variant<int, float> v2( v );
+
+        BOOST_TEST( holds_alternative<int>( v2 ) );
+        BOOST_TEST_EQ( get<int>( v ), get<int>( v2 ) );
+
+        variant<int, float> v3( std::move(v) );
+
+        BOOST_TEST( holds_alternative<int>( v3 ) );
+        BOOST_TEST_EQ( get<int>( v2 ), get<int>( v3 ) );
+    }
+
+    {
+        variant<int> const v( 1 );
+
+        variant<int, float> v2( v );
+
+        BOOST_TEST( holds_alternative<int>( v2 ) );
+        BOOST_TEST_EQ( get<int>( v ), get<int>( v2 ) );
+
+        variant<int, float> v3( std::move(v) );
+
+        BOOST_TEST( holds_alternative<int>( v3 ) );
+        BOOST_TEST_EQ( get<int>( v2 ), get<int>( v3 ) );
+    }
+
+    {
+        variant<int const> v( 1 );
+
+        variant<int const, float> v2( v );
+
+        BOOST_TEST( holds_alternative<int const>( v2 ) );
+        BOOST_TEST_EQ( get<int const>( v ), get<int const>( v2 ) );
+
+        variant<int const, float> v3( std::move(v) );
+
+        BOOST_TEST( holds_alternative<int const>( v3 ) );
+        BOOST_TEST_EQ( get<int const>( v2 ), get<int const>( v3 ) );
+    }
+
+    {
+        variant<int const> const v( 1 );
+
+        variant<int const, float> v2( v );
+
+        BOOST_TEST( holds_alternative<int const>( v2 ) );
+        BOOST_TEST_EQ( get<int const>( v ), get<int const>( v2 ) );
+
+        variant<int const, float> v3( std::move(v) );
+
+        BOOST_TEST( holds_alternative<int const>( v3 ) );
+        BOOST_TEST_EQ( get<int const>( v2 ), get<int const>( v3 ) );
+    }
+
+    {
+        variant<float> v( 3.14f );
+
+        variant<int, float> v2( v );
+
+        BOOST_TEST( holds_alternative<float>( v2 ) );
+        BOOST_TEST_EQ( get<float>( v ), get<float>( v2 ) );
+
+        variant<int, float> v3( std::move(v) );
+
+        BOOST_TEST( holds_alternative<float>( v3 ) );
+        BOOST_TEST_EQ( get<float>( v2 ), get<float>( v3 ) );
+    }
+
+    {
+        variant<float> v( 3.15f );
+
+        variant<int, int, float> v2( v );
+
+        BOOST_TEST( holds_alternative<float>( v2 ) );
+        BOOST_TEST_EQ( get<float>( v ), get<float>( v2 ) );
+
+        variant<int, int, float> v3( std::move(v) );
+
+        BOOST_TEST( holds_alternative<float>( v3 ) );
+        BOOST_TEST_EQ( get<float>( v2 ), get<float>( v3 ) );
+    }
+
+    {
+        variant<float, std::string> v( "s1" );
+
+        variant<int, int, float, std::string> v2( v );
+
+        BOOST_TEST( holds_alternative<std::string>( v2 ) );
+        BOOST_TEST_EQ( get<std::string>( v ), get<std::string>( v2 ) );
+
+        variant<int, int, float, std::string> v3( std::move(v) );
+
+        BOOST_TEST( holds_alternative<std::string>( v3 ) );
+        BOOST_TEST_EQ( get<std::string>( v2 ), get<std::string>( v3 ) );
+    }
+
+    {
+        variant<X1, X2> v{ X1{1} };
+
+        variant<int, int, float, float, X1, X2> v2( v );
+
+        BOOST_TEST( holds_alternative<X1>( v2 ) );
+        BOOST_TEST_EQ( get<X1>( v ).v, get<X1>( v2 ).v );
+
+        variant<int, int, float, float, X1, X2> v3( std::move(v) );
+
+        BOOST_TEST( holds_alternative<X1>( v3 ) );
+        BOOST_TEST_EQ( get<X1>( v2 ).v, get<X1>( v3 ).v );
+    }
+
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_convert_construct_throw.cpp

@@ -0,0 +1,95 @@
+
+// Copyright 2019 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
+
+#if defined(_MSC_VER)
+# pragma warning( disable: 4702 ) // unreachable code
+#endif
+
+#include <boost/variant2/variant.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <stdexcept>
+
+using namespace boost::variant2;
+
+struct X
+{
+    static int instances;
+
+    X()
+    {
+        ++instances;
+    }
+
+    X( X const& )
+    {
+        throw std::runtime_error( "X(X const&)" );
+    }
+
+    ~X()
+    {
+        --instances;
+    }
+};
+
+int X::instances = 0;
+
+void test_copy()
+{
+    X::instances = 0;
+
+    {
+        variant<X> v1;
+
+        BOOST_TEST_EQ( X::instances, 1 );
+
+        try
+        {
+            variant<X, int, float> v2( v1 );
+            BOOST_TEST_EQ( X::instances, 2 );
+        }
+        catch( std::exception const& )
+        {
+        }
+
+        BOOST_TEST_EQ( X::instances, 1 );
+    }
+
+    BOOST_TEST_EQ( X::instances, 0 );
+}
+
+void test_move()
+{
+    X::instances = 0;
+
+    {
+        variant<X> v1;
+
+        BOOST_TEST_EQ( X::instances, 1 );
+
+        try
+        {
+            variant<X, int, float> v2( std::move( v1 ) );
+            BOOST_TEST_EQ( X::instances, 2 );
+        }
+        catch( std::exception const& )
+        {
+        }
+
+        BOOST_TEST_EQ( X::instances, 1 );
+    }
+
+    BOOST_TEST_EQ( X::instances, 0 );
+}
+
+int main()
+{
+    test_copy();
+    test_move();
+
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_copy_assign.cpp

@@ -0,0 +1,194 @@
+
+// Copyright 2017 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/variant2/variant.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+#include <type_traits>
+#include <utility>
+#include <string>
+
+using namespace boost::variant2;
+
+#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
+
+struct X1
+{
+    int v;
+
+    X1(): v(0) {}
+    explicit X1(int v): v(v) {}
+    X1(X1 const& r): v(r.v) {}
+    X1(X1&& r): v(r.v) {}
+    X1& operator=( X1 const& r ) { v = r.v; return *this; }
+    X1& operator=( X1&& r ) { v = r.v; return *this; }
+};
+
+inline bool operator==( X1 const& a, X1 const& b ) { return a.v == b.v; }
+
+STATIC_ASSERT( !std::is_nothrow_default_constructible<X1>::value );
+STATIC_ASSERT( !std::is_nothrow_copy_constructible<X1>::value );
+STATIC_ASSERT( !std::is_nothrow_move_constructible<X1>::value );
+STATIC_ASSERT( !std::is_nothrow_copy_assignable<X1>::value );
+STATIC_ASSERT( !std::is_nothrow_move_assignable<X1>::value );
+
+struct X2
+{
+    int v;
+
+    X2(): v(0) {}
+    explicit X2(int v): v(v) {}
+    X2(X2 const& r): v(r.v) {}
+    X2(X2&& r): v(r.v) {}
+    X2& operator=( X2 const& r ) { v = r.v; return *this; }
+    X2& operator=( X2&& r ) { v = r.v; return *this; }
+};
+
+inline bool operator==( X2 const& a, X2 const& b ) { return a.v == b.v; }
+
+STATIC_ASSERT( !std::is_nothrow_default_constructible<X2>::value );
+STATIC_ASSERT( !std::is_nothrow_copy_constructible<X2>::value );
+STATIC_ASSERT( !std::is_nothrow_move_constructible<X2>::value );
+STATIC_ASSERT( !std::is_nothrow_copy_assignable<X2>::value );
+STATIC_ASSERT( !std::is_nothrow_move_assignable<X2>::value );
+
+struct Y
+{
+    Y& operator=( Y const& ) = delete;
+};
+
+int main()
+{
+    {
+        variant<int> v;
+        BOOST_TEST_EQ( get<0>(v), 0 );
+
+        variant<int> v2( 1 );
+
+        v = v2;
+        BOOST_TEST_EQ( get<0>(v), 1 );
+
+        variant<int> const v3( 2 );
+
+        v = v3;
+        BOOST_TEST_EQ( get<0>(v), 2 );
+    }
+
+    {
+        variant<int, float> v;
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 0 );
+
+        variant<int, float> v2( 1 );
+
+        v = v2;
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 1 );
+
+        variant<int, float> v3( 3.14f );
+
+        v = v3;
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v), 3.14f );
+
+        variant<int, float> const v4( 3.15f );
+
+        v = v4;
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v), 3.15f );
+    }
+
+    {
+        variant<int, int, float, std::string> v;
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 0 );
+
+        variant<int, int, float, std::string> v2( in_place_index_t<1>{}, 1 );
+
+        v = v2;
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v), 1 );
+
+        variant<int, int, float, std::string> v3( 3.14f );
+
+        v = v3;
+        BOOST_TEST_EQ( v.index(), 2 );
+        BOOST_TEST_EQ( get<2>(v), 3.14f );
+
+        variant<int, int, float, std::string> const v4( 3.15f );
+
+        v = v4;
+        BOOST_TEST_EQ( v.index(), 2 );
+        BOOST_TEST_EQ( get<2>(v), 3.15f );
+
+        variant<int, int, float, std::string> v5( "s1" );
+
+        v = v5;
+        BOOST_TEST_EQ( v.index(), 3 );
+        BOOST_TEST_EQ( get<3>(v), std::string("s1") );
+
+        variant<int, int, float, std::string> const v6( "s2" );
+
+        v = v6;
+        BOOST_TEST_EQ( v.index(), 3 );
+        BOOST_TEST_EQ( get<3>(v), std::string("s2") );
+    }
+
+    {
+        variant<X1, X2> v;
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v).v, 0 );
+
+        variant<X1, X2> v2( X1{1} );
+
+        v = v2;
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v).v, 1 );
+
+        variant<X1, X2> v3( in_place_index_t<1>{}, 2 );
+
+        v = v3;
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v).v, 2 );
+
+        variant<X1, X2> const v4( in_place_index_t<1>{}, 3 );
+
+        v = v4;
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v).v, 3 );
+
+        variant<X1, X2> const v5( in_place_index_t<0>{}, 4 );
+
+        v = v5;
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v).v, 4 );
+    }
+
+    {
+        BOOST_TEST_TRAIT_TRUE((std::is_nothrow_copy_assignable<variant<int>>));
+        BOOST_TEST_TRAIT_TRUE((std::is_nothrow_copy_assignable<variant<int, int>>));
+        BOOST_TEST_TRAIT_TRUE((std::is_nothrow_copy_assignable<variant<int, float>>));
+        BOOST_TEST_TRAIT_TRUE((std::is_nothrow_copy_assignable<variant<int, int, float, float>>));
+
+        BOOST_TEST_TRAIT_FALSE((std::is_nothrow_copy_assignable<variant<X1>>));
+        BOOST_TEST_TRAIT_FALSE((std::is_nothrow_copy_assignable<variant<X1, int>>));
+        BOOST_TEST_TRAIT_FALSE((std::is_nothrow_copy_assignable<variant<X1, int, float>>));
+
+        BOOST_TEST_TRAIT_FALSE((std::is_nothrow_copy_assignable<variant<int, X1>>));
+        BOOST_TEST_TRAIT_FALSE((std::is_nothrow_copy_assignable<variant<int, int, X1>>));
+
+        BOOST_TEST_TRAIT_FALSE((std::is_nothrow_copy_assignable<variant<X1, X2>>));
+        BOOST_TEST_TRAIT_FALSE((std::is_nothrow_copy_assignable<variant<X1, X2, int, int>>));
+
+        BOOST_TEST_TRAIT_TRUE((std::is_copy_assignable<variant<X1, X2>>));
+        BOOST_TEST_TRAIT_FALSE((std::is_copy_assignable<variant<int const>>));
+        BOOST_TEST_TRAIT_FALSE((std::is_copy_assignable<variant<int, float, Y>>));
+    }
+
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_copy_assign_cx.cpp

@@ -0,0 +1,116 @@
+
+// Copyright 2017 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/variant2/variant.hpp>
+
+using namespace boost::variant2;
+
+struct X
+{
+    int v;
+    X() = default;
+    constexpr X( int v ): v( v ) {}
+    constexpr operator int() const { return v; }
+};
+
+struct Y
+{
+    int v;
+    constexpr Y(): v() {}
+    constexpr Y( int v ): v( v ) {}
+    constexpr operator int() const { return v; }
+};
+
+enum E
+{
+    v
+};
+
+#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
+
+template<class V, class T, class A> constexpr T test( A const& a )
+{
+    V v;
+
+    v = a;
+
+    return get<T>(v);
+}
+
+int main()
+{
+    {
+        constexpr variant<int> v( 1 );
+        constexpr auto w = test<variant<int>, int>( v );
+        STATIC_ASSERT( w == 1 );
+    }
+
+    {
+        constexpr variant<X> v( 1 );
+        constexpr auto w = test<variant<X>, X>( v );
+        STATIC_ASSERT( w == 1 );
+    }
+
+#if defined( BOOST_LIBSTDCXX_VERSION ) && BOOST_LIBSTDCXX_VERSION < 50000
+#else
+
+    {
+        constexpr variant<Y> v( 1 );
+        constexpr auto w = test<variant<Y>, Y>( v );
+        STATIC_ASSERT( w == 1 );
+    }
+
+#endif
+
+    {
+        constexpr variant<int, float> v( 1 );
+        constexpr auto w = test<variant<int, float>, int>( v );
+        STATIC_ASSERT( w == 1 );
+    }
+
+    {
+        constexpr variant<int, float> v( 3.0f );
+        constexpr auto w = test<variant<int, float>, float>( v );
+        STATIC_ASSERT( w == 3.0f );
+    }
+
+    {
+        constexpr variant<int, int, float> v( 3.0f );
+        constexpr auto w = test<variant<int, int, float>, float>( v );
+        STATIC_ASSERT( w == 3.0f );
+    }
+
+    {
+        constexpr variant<E, E, X> v( 1 );
+        constexpr auto w = test<variant<E, E, X>, X>( v );
+        STATIC_ASSERT( w == 1 );
+    }
+
+    {
+        constexpr variant<int, int, float, float, X> v( X(1) );
+        constexpr auto w = test<variant<int, int, float, float, X>, X>( v );
+        STATIC_ASSERT( w == 1 );
+    }
+
+#if defined( BOOST_LIBSTDCXX_VERSION ) && BOOST_LIBSTDCXX_VERSION < 50000
+#else
+
+    {
+        constexpr variant<E, E, Y> v( 1 );
+        constexpr auto w = test<variant<E, E, Y>, Y>( v );
+        STATIC_ASSERT( w == 1 );
+    }
+
+    {
+        constexpr variant<int, int, float, float, Y> v( Y(1) );
+        constexpr auto w = test<variant<int, int, float, float, Y>, Y>( v );
+        STATIC_ASSERT( w == 1 );
+    }
+
+#endif
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_copy_assign_throw.cpp

@@ -0,0 +1,55 @@
+
+// Copyright 2019 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
+
+#if defined(_MSC_VER)
+# pragma warning( disable: 4702 ) // unreachable code
+#endif
+
+#include <boost/variant2/variant.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <stdexcept>
+
+using namespace boost::variant2;
+
+struct Y1
+{
+    Y1() noexcept {} // =default fails on msvc-14.0
+
+    Y1(Y1 const&)
+    {
+        throw std::runtime_error( "Y1(Y1 const&)" );
+    }
+
+    Y1& operator=(Y1 const&) = default;
+};
+
+struct Y2
+{
+    Y2() noexcept {}
+
+    Y2(Y2 const&)
+    {
+        throw std::runtime_error( "Y2(Y2 const&)" );
+    }
+
+    Y2& operator=(Y2 const&) = default;
+};
+
+void test()
+{
+    variant<Y1, Y2> v1( in_place_type_t<Y1>{} );
+    variant<Y1, Y2> v2( in_place_type_t<Y2>{} );
+
+    BOOST_TEST_THROWS( v1 = v2, std::runtime_error )
+}
+
+int main()
+{
+    test();
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_copy_construct.cpp

@@ -0,0 +1,162 @@
+
+// Copyright 2017 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/variant2/variant.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+#include <boost/config.hpp>
+#include <boost/config/workaround.hpp>
+#include <type_traits>
+#include <utility>
+#include <string>
+
+using namespace boost::variant2;
+
+#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
+
+struct X1
+{
+    X1() {}
+    X1(X1 const&) {}
+    X1(X1&&) {}
+};
+
+inline bool operator==( X1, X1 ) { return true; }
+
+STATIC_ASSERT( !std::is_nothrow_default_constructible<X1>::value );
+STATIC_ASSERT( !std::is_nothrow_copy_constructible<X1>::value );
+STATIC_ASSERT( !std::is_nothrow_move_constructible<X1>::value );
+
+struct X2
+{
+    X2() {}
+    X2(X2 const&) {}
+    X2(X2&&) {}
+};
+
+inline bool operator==( X2, X2 ) { return true; }
+
+STATIC_ASSERT( !std::is_nothrow_default_constructible<X2>::value );
+STATIC_ASSERT( !std::is_nothrow_copy_constructible<X2>::value );
+STATIC_ASSERT( !std::is_nothrow_move_constructible<X2>::value );
+
+struct Y
+{
+    Y( Y const& ) = delete;
+};
+
+struct D
+{
+    ~D() {}
+};
+
+inline bool operator==( D, D ) { return true; }
+
+template<class V> static void test( V const & v )
+{
+    V v2( v );
+
+    BOOST_TEST_EQ( v.index(), v2.index() );
+    BOOST_TEST( v == v2 );
+
+    BOOST_TEST_TRAIT_TRUE((std::is_copy_constructible<V>));
+}
+
+int main()
+{
+    test( variant<int>() );
+    test( variant<int>(1) );
+
+    test( variant<int const>() );
+    test( variant<int const>(1) );
+
+    test( variant<int, float>() );
+    test( variant<int, float>(1) );
+    test( variant<int, float>(3.14f) );
+
+    test( variant<int const, float const>() );
+    test( variant<int const, float const>(1) );
+    test( variant<int const, float const>(3.14f) );
+
+    test( variant<std::string>() );
+    test( variant<std::string>("test") );
+
+    test( variant<std::string const>() );
+    test( variant<std::string const>("test") );
+
+    test( variant<int, float, std::string>() );
+    test( variant<int, float, std::string>(1) );
+    test( variant<int, float, std::string>(3.14f) );
+    test( variant<int, float, std::string>("test") );
+
+    test( variant<int, int>() );
+
+    test( variant<int, int, float>() );
+    test( variant<int, int, float>(3.14f) );
+
+    test( variant<int, int, float, float>() );
+
+    test( variant<int, int, float, float, std::string>("test") );
+
+    test( variant<std::string, std::string, float>() );
+
+    test( variant<X1 const>() );
+
+    test( variant<X1, X2>() );
+    test( variant<X1, X2, int>() );
+    test( variant<X1, X2, X2>() );
+    test( variant<X1, X1, X2, X2>() );
+
+    {
+        variant<X1, X2> v;
+        v.emplace<X2>();
+
+        test( v );
+    }
+
+    {
+        variant<X1, X1, X2> v;
+        v.emplace<X2>();
+
+        test( v );
+    }
+
+#if !BOOST_WORKAROUND( __GNUC__, < 5 )
+
+    test( variant<D>() );
+
+#endif
+
+    {
+        BOOST_TEST_TRAIT_TRUE((std::is_nothrow_copy_constructible<variant<int>>));
+        BOOST_TEST_TRAIT_TRUE((std::is_nothrow_copy_constructible<variant<int const>>));
+        BOOST_TEST_TRAIT_TRUE((std::is_nothrow_copy_constructible<variant<int, int>>));
+        BOOST_TEST_TRAIT_TRUE((std::is_nothrow_copy_constructible<variant<int, float>>));
+        BOOST_TEST_TRAIT_TRUE((std::is_nothrow_copy_constructible<variant<int, int, float, float>>));
+
+        BOOST_TEST_TRAIT_FALSE((std::is_nothrow_copy_constructible<variant<X1>>));
+        BOOST_TEST_TRAIT_FALSE((std::is_nothrow_copy_constructible<variant<X1, int>>));
+        BOOST_TEST_TRAIT_FALSE((std::is_nothrow_copy_constructible<variant<X1, int, float>>));
+
+        BOOST_TEST_TRAIT_FALSE((std::is_nothrow_copy_constructible<variant<int, X1>>));
+        BOOST_TEST_TRAIT_FALSE((std::is_nothrow_copy_constructible<variant<int, int, X1>>));
+
+        BOOST_TEST_TRAIT_FALSE((std::is_nothrow_copy_constructible<variant<X1, X2>>));
+        BOOST_TEST_TRAIT_FALSE((std::is_nothrow_copy_constructible<variant<X1, X2, int, int>>));
+
+        BOOST_TEST_TRAIT_TRUE((std::is_copy_constructible<variant<X1, X2>>));
+
+#if !BOOST_WORKAROUND( BOOST_MSVC, <= 1910 )
+
+        BOOST_TEST_TRAIT_FALSE((std::is_copy_constructible<variant<int, float, Y>>));
+
+#endif
+    }
+
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_copy_construct_cx.cpp

@@ -0,0 +1,112 @@
+
+// Copyright 2017 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/variant2/variant.hpp>
+
+using namespace boost::variant2;
+
+struct X
+{
+    int v;
+    X() = default;
+    constexpr X( int v ): v( v ) {}
+    constexpr operator int() const { return v; }
+};
+
+struct Y
+{
+    int v;
+    constexpr Y(): v() {}
+    constexpr Y( int v ): v( v ) {}
+    constexpr operator int() const { return v; }
+};
+
+enum E
+{
+    v
+};
+
+#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
+
+template<class T, class V> constexpr T test( V const v )
+{
+    return get<T>( v );
+}
+
+int main()
+{
+    {
+        constexpr variant<int> v( 1 );
+        constexpr auto w = test<int>( v );
+        STATIC_ASSERT( w == 1 );
+    }
+
+    {
+        constexpr variant<X> v( 1 );
+        constexpr auto w = test<X>( v );
+        STATIC_ASSERT( w == 1 );
+    }
+
+#if defined( BOOST_LIBSTDCXX_VERSION ) && BOOST_LIBSTDCXX_VERSION < 50000
+#else
+
+    {
+        constexpr variant<Y> v( 1 );
+        constexpr auto w = test<Y>( v );
+        STATIC_ASSERT( w == 1 );
+    }
+
+#endif
+
+    {
+        constexpr variant<int, float> v( 1 );
+        constexpr auto w = test<int>( v );
+        STATIC_ASSERT( w == 1 );
+    }
+
+    {
+        constexpr variant<int, float> v( 3.0f );
+        constexpr auto w = test<float>( v );
+        STATIC_ASSERT( w == 3.0f );
+    }
+
+    {
+        constexpr variant<int, int, float> v( 3.0f );
+        constexpr auto w = test<float>( v );
+        STATIC_ASSERT( w == 3.0f );
+    }
+
+    {
+        constexpr variant<E, E, X> v( 1 );
+        constexpr auto w = test<X>( v );
+        STATIC_ASSERT( w == 1 );
+    }
+
+    {
+        constexpr variant<int, int, float, float, X> v( X(1) );
+        constexpr auto w = test<X>( v );
+        STATIC_ASSERT( w == 1 );
+    }
+
+#if defined( BOOST_LIBSTDCXX_VERSION ) && BOOST_LIBSTDCXX_VERSION < 50000
+#else
+
+    {
+        constexpr variant<E, E, Y> v( 1 );
+        constexpr auto w = test<Y>( v );
+        STATIC_ASSERT( w == 1 );
+    }
+
+    {
+        constexpr variant<int, int, float, float, Y> v( Y(1) );
+        constexpr auto w = test<Y>( v );
+        STATIC_ASSERT( w == 1 );
+    }
+
+#endif
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_copy_construct_throw.cpp

@@ -0,0 +1,69 @@
+
+// Copyright 2019 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
+
+#if defined(_MSC_VER)
+# pragma warning( disable: 4702 ) // unreachable code
+#endif
+
+#include <boost/variant2/variant.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <stdexcept>
+
+using namespace boost::variant2;
+
+struct X
+{
+    static int instances;
+
+    X()
+    {
+        ++instances;
+    }
+
+    X( X const& )
+    {
+        throw std::runtime_error( "X(X const&)" );
+    }
+
+    ~X()
+    {
+        --instances;
+    }
+};
+
+int X::instances = 0;
+
+void test()
+{
+    X::instances = 0;
+
+    {
+        variant<X> v1;
+
+        BOOST_TEST_EQ( X::instances, 1 );
+
+        try
+        {
+            variant<X> v2( v1 );
+            BOOST_TEST_EQ( X::instances, 2 );
+        }
+        catch( std::exception const& )
+        {
+        }
+
+        BOOST_TEST_EQ( X::instances, 1 );
+    }
+
+    BOOST_TEST_EQ( X::instances, 0 );
+}
+
+int main()
+{
+    test();
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_default_construct.cpp

@@ -0,0 +1,103 @@
+
+// Copyright 2017 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/variant2/variant.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+#include <type_traits>
+#include <utility>
+#include <string>
+
+using namespace boost::variant2;
+
+struct X
+{
+    X();
+};
+
+struct Y
+{
+    Y() = delete;
+};
+
+int main()
+{
+    {
+        variant<int> v;
+
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 0 );
+    }
+
+    {
+        variant<int const> v;
+
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 0 );
+    }
+
+    {
+        variant<int, float, std::string> v;
+
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 0 );
+    }
+
+    {
+        variant<int, int, std::string> v;
+
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 0 );
+    }
+
+    {
+        variant<std::string> v;
+
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), std::string() );
+    }
+
+    {
+        variant<std::string const> v;
+
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), std::string() );
+    }
+
+    {
+        variant<std::string, int, float> v;
+
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), std::string() );
+    }
+
+    {
+        variant<std::string, std::string, float> v;
+
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), std::string() );
+    }
+
+    {
+        BOOST_TEST_TRAIT_TRUE((std::is_nothrow_default_constructible<variant<int>>));
+        BOOST_TEST_TRAIT_TRUE((std::is_nothrow_default_constructible<variant<int const>>));
+        BOOST_TEST_TRAIT_TRUE((std::is_nothrow_default_constructible<variant<int, X>>));
+        BOOST_TEST_TRAIT_TRUE((std::is_nothrow_default_constructible<variant<int, float, X>>));
+        BOOST_TEST_TRAIT_TRUE((std::is_nothrow_default_constructible<variant<int, int, X>>));
+        BOOST_TEST_TRAIT_TRUE((std::is_nothrow_default_constructible<variant<int, X, X>>));
+
+        BOOST_TEST_TRAIT_FALSE((std::is_nothrow_default_constructible<variant<X>>));
+        BOOST_TEST_TRAIT_FALSE((std::is_nothrow_default_constructible<variant<X, int>>));
+        BOOST_TEST_TRAIT_FALSE((std::is_nothrow_default_constructible<variant<X, int, float>>));
+
+        BOOST_TEST_TRAIT_TRUE((std::is_default_constructible<variant<int, Y>>));
+        BOOST_TEST_TRAIT_FALSE((std::is_default_constructible<variant<Y, int>>));
+    }
+
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_default_construct_cx.cpp

@@ -0,0 +1,51 @@
+
+// Copyright 2017 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/variant2/variant.hpp>
+
+using namespace boost::variant2;
+
+#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
+
+int main()
+{
+    {
+        constexpr variant<int> v;
+
+        STATIC_ASSERT( v.index() == 0 );
+        STATIC_ASSERT( get<0>(v) == 0 );
+    }
+
+    {
+        constexpr variant<int const> v;
+
+        STATIC_ASSERT( v.index() == 0 );
+        STATIC_ASSERT( get<0>(v) == 0 );
+    }
+
+    {
+        constexpr variant<int, float> v;
+
+        STATIC_ASSERT( v.index() == 0 );
+        STATIC_ASSERT( get<0>(v) == 0 );
+    }
+
+    {
+        constexpr variant<int, int, float> v;
+
+        STATIC_ASSERT( v.index() == 0 );
+        STATIC_ASSERT( get<0>(v) == 0 );
+    }
+
+    {
+        constexpr variant<int, float, float> v;
+
+        STATIC_ASSERT( v.index() == 0 );
+        STATIC_ASSERT( get<0>(v) == 0 );
+    }
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_derived_construct.cpp

@@ -0,0 +1,33 @@
+// Copyright 2021 Peter Dimov.
+// Distributed under the Boost Software License, Version 1.0.
+// https://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/variant2/variant.hpp>
+
+using namespace boost::variant2;
+
+template<class... T> class X: variant<T...>
+{
+    using base = variant<T...>;
+    using base::base;
+};
+
+struct Y
+{
+    Y( Y const& rhs ) = default;
+
+    template<class T> Y( T const& t )
+    {
+        t.bar();
+    }
+};
+
+int main()
+{
+    using W = X<int, double, Y>;
+
+    W a( 1 );
+    W b( a );
+
+    (void)b;
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_destroy.cpp

@@ -0,0 +1,205 @@
+
+// Copyright 2017 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/variant2/variant.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+#include <type_traits>
+#include <utility>
+#include <string>
+
+using namespace boost::variant2;
+
+struct X1
+{
+    static int instances;
+
+    int v;
+
+    X1(): v(0) { ++instances; }
+    explicit X1(int v): v(v) { ++instances; }
+    X1(X1 const& r): v(r.v) { ++instances; }
+    X1(X1&& r): v(r.v) { ++instances; }
+
+    ~X1() noexcept { --instances; }
+
+    X1& operator=( X1 const& r ) { v = r.v; return *this; }
+    X1& operator=( X1&& r ) { v = r.v; return *this; }
+};
+
+int X1::instances = 0;
+
+struct X2
+{
+    static int instances;
+
+    int v;
+
+    X2(): v(0) { ++instances; }
+    explicit X2(int v): v(v) { ++instances; }
+    X2(X2 const& r): v(r.v) { ++instances; }
+    X2(X2&& r): v(r.v) { ++instances; }
+
+    ~X2() noexcept { --instances; }
+
+    X2& operator=( X2 const& r ) { v = r.v; return *this; }
+    X2& operator=( X2&& r ) { v = r.v; return *this; }
+};
+
+int X2::instances = 0;
+
+struct Y1
+{
+    static int instances;
+
+    int v;
+
+    Y1() noexcept: v(0) { ++instances; }
+    explicit Y1(int v) noexcept: v(v) { ++instances; }
+    Y1(Y1 const& r) noexcept: v(r.v) { ++instances; }
+    Y1(Y1&& r) noexcept: v(r.v) { ++instances; }
+
+    ~Y1() noexcept { --instances; }
+
+    Y1& operator=( Y1 const& r ) noexcept { v = r.v; return *this; }
+    Y1& operator=( Y1&& r ) noexcept { v = r.v; return *this; }
+};
+
+int Y1::instances = 0;
+
+struct Y2
+{
+    static int instances;
+
+    int v;
+
+    Y2() noexcept: v(0) { ++instances; }
+    explicit Y2(int v) noexcept: v(v) { ++instances; }
+    Y2(Y2 const& r) noexcept: v(r.v) { ++instances; }
+    Y2(Y2&& r) noexcept: v(r.v) { ++instances; }
+
+    ~Y2() noexcept { --instances; }
+
+    Y2& operator=( Y2 const& r ) noexcept { v = r.v; return *this; }
+    Y2& operator=( Y2&& r ) noexcept { v = r.v; return *this; }
+};
+
+int Y2::instances = 0;
+
+int main()
+{
+    BOOST_TEST_EQ( Y1::instances, 0 );
+
+    {
+        variant<Y1> v;
+        BOOST_TEST_EQ( Y1::instances, 1 );
+
+        {
+            variant<Y1> v2;
+            BOOST_TEST_EQ( Y1::instances, 2 );
+
+            v = v2;
+            BOOST_TEST_EQ( Y1::instances, 2 );
+        }
+
+        BOOST_TEST_EQ( Y1::instances, 1 );
+
+        v = Y1{1};
+        BOOST_TEST_EQ( Y1::instances, 1 );
+    }
+
+    BOOST_TEST_EQ( Y1::instances, 0 );
+    BOOST_TEST_EQ( Y2::instances, 0 );
+
+    {
+        variant<Y1, Y2> v;
+
+        BOOST_TEST_EQ( Y1::instances, 1 );
+        BOOST_TEST_EQ( Y2::instances, 0 );
+
+        {
+            variant<Y1, Y2> v2;
+            BOOST_TEST_EQ( Y1::instances, 2 );
+            BOOST_TEST_EQ( Y2::instances, 0 );
+
+            v = v2;
+            BOOST_TEST_EQ( Y1::instances, 2 );
+            BOOST_TEST_EQ( Y2::instances, 0 );
+
+            v2 = Y2{1};
+            BOOST_TEST_EQ( Y1::instances, 1 );
+            BOOST_TEST_EQ( Y2::instances, 1 );
+
+            v = v2;
+            BOOST_TEST_EQ( Y1::instances, 0 );
+            BOOST_TEST_EQ( Y2::instances, 2 );
+        }
+
+        BOOST_TEST_EQ( Y1::instances, 0 );
+        BOOST_TEST_EQ( Y2::instances, 1 );
+
+        v.emplace<0>();
+
+        BOOST_TEST_EQ( Y1::instances, 1 );
+        BOOST_TEST_EQ( Y2::instances, 0 );
+
+        v.emplace<Y2>();
+
+        BOOST_TEST_EQ( Y1::instances, 0 );
+        BOOST_TEST_EQ( Y2::instances, 1 );
+    }
+
+    BOOST_TEST_EQ( Y1::instances, 0 );
+    BOOST_TEST_EQ( Y2::instances, 0 );
+
+    BOOST_TEST_EQ( X1::instances, 0 );
+    BOOST_TEST_EQ( X2::instances, 0 );
+
+    {
+        variant<X1, X2> v;
+
+        BOOST_TEST_EQ( X1::instances, 1 );
+        BOOST_TEST_EQ( X2::instances, 0 );
+
+        {
+            variant<X1, X2> v2;
+            BOOST_TEST_EQ( X1::instances, 2 );
+            BOOST_TEST_EQ( X2::instances, 0 );
+
+            v = v2;
+            BOOST_TEST_EQ( X1::instances, 2 );
+            BOOST_TEST_EQ( X2::instances, 0 );
+
+            v2 = X2{1};
+            BOOST_TEST_EQ( X1::instances, 1 );
+            BOOST_TEST_EQ( X2::instances, 1 );
+
+            v = v2;
+            BOOST_TEST_EQ( X1::instances, 0 );
+            BOOST_TEST_EQ( X2::instances, 2 );
+        }
+
+        BOOST_TEST_EQ( X1::instances, 0 );
+        BOOST_TEST_EQ( X2::instances, 1 );
+
+        v.emplace<0>();
+
+        BOOST_TEST_EQ( X1::instances, 1 );
+        BOOST_TEST_EQ( X2::instances, 0 );
+
+        v.emplace<X2>();
+
+        BOOST_TEST_EQ( X1::instances, 0 );
+        BOOST_TEST_EQ( X2::instances, 1 );
+    }
+
+    BOOST_TEST_EQ( X1::instances, 0 );
+    BOOST_TEST_EQ( X2::instances, 0 );
+
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_emplace_index.cpp

@@ -0,0 +1,292 @@
+
+// Copyright 2017 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/variant2/variant.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+#include <type_traits>
+#include <utility>
+#include <string>
+
+using namespace boost::variant2;
+
+#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
+
+struct X1
+{
+    int v;
+
+    X1(): v(0) {}
+    explicit X1(int v): v(v) {}
+    X1(X1 const& r): v(r.v) {}
+    X1(X1&& r): v(r.v) {}
+    X1& operator=( X1 const& r ) { v = r.v; return *this; }
+    X1& operator=( X1&& r ) { v = r.v; return *this; }
+};
+
+inline bool operator==( X1 const& a, X1 const& b ) { return a.v == b.v; }
+
+STATIC_ASSERT( !std::is_nothrow_default_constructible<X1>::value );
+STATIC_ASSERT( !std::is_nothrow_copy_constructible<X1>::value );
+STATIC_ASSERT( !std::is_nothrow_move_constructible<X1>::value );
+STATIC_ASSERT( !std::is_nothrow_copy_assignable<X1>::value );
+STATIC_ASSERT( !std::is_nothrow_move_assignable<X1>::value );
+
+struct X2
+{
+    int v;
+
+    X2(): v(0) {}
+    explicit X2(int v): v(v) {}
+    X2(X2 const& r): v(r.v) {}
+    X2(X2&& r): v(r.v) {}
+    X2& operator=( X2 const& r ) { v = r.v; return *this; }
+    X2& operator=( X2&& r ) { v = r.v; return *this; }
+};
+
+inline bool operator==( X2 const& a, X2 const& b ) { return a.v == b.v; }
+
+STATIC_ASSERT( !std::is_nothrow_default_constructible<X2>::value );
+STATIC_ASSERT( !std::is_nothrow_copy_constructible<X2>::value );
+STATIC_ASSERT( !std::is_nothrow_move_constructible<X2>::value );
+STATIC_ASSERT( !std::is_nothrow_copy_assignable<X2>::value );
+STATIC_ASSERT( !std::is_nothrow_move_assignable<X2>::value );
+
+struct Y1
+{
+    int v = 1;
+
+    Y1() = default;
+    Y1(Y1 const&) = delete;
+    Y1(Y1&&) = delete;
+};
+
+STATIC_ASSERT( !std::is_copy_constructible<Y1>::value );
+STATIC_ASSERT( !std::is_move_constructible<Y1>::value );
+
+struct Y2
+{
+    int v = 2;
+
+    Y2() = default;
+    Y2(Y2 const&) = delete;
+    Y2(Y2&&) = delete;
+};
+
+STATIC_ASSERT( !std::is_copy_constructible<Y2>::value );
+STATIC_ASSERT( !std::is_move_constructible<Y2>::value );
+
+struct Z1
+{
+    static int instances;
+
+    int v = 1;
+
+    Z1() { ++instances; }
+    ~Z1() { --instances; }
+
+    Z1(Z1 const&) = delete;
+    Z1(Z1&&) = delete;
+};
+
+int Z1::instances = 0;
+
+struct Z2
+{
+    static int instances;
+
+    int v = 2;
+
+    Z2() { ++instances; }
+    ~Z2() { --instances; }
+
+    Z2(Z2 const&) = delete;
+    Z2(Z2&&) = delete;
+};
+
+int Z2::instances = 0;
+
+int main()
+{
+    {
+        variant<int> v;
+        BOOST_TEST_EQ( get<0>(v), 0 );
+
+        v.emplace<0>( 1 );
+        BOOST_TEST_EQ( get<0>(v), 1 );
+
+        v.emplace<0>();
+        BOOST_TEST_EQ( get<0>(v), 0 );
+    }
+
+    {
+        variant<int, float> v;
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 0 );
+
+        v.emplace<0>( 1 );
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 1 );
+
+        v.emplace<1>( 3.14f );
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v), 3.14f );
+
+        v.emplace<1>();
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v), 0 );
+
+        v.emplace<0>();
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 0 );
+    }
+
+    {
+        variant<int, int, float, std::string> v;
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 0 );
+
+        v.emplace<0>( 1 );
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 1 );
+
+        v.emplace<1>();
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v), 0 );
+
+        v.emplace<1>( 1 );
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v), 1 );
+
+        v.emplace<2>( 3.14f );
+        BOOST_TEST_EQ( v.index(), 2 );
+        BOOST_TEST_EQ( get<2>(v), 3.14f );
+
+        v.emplace<2>();
+        BOOST_TEST_EQ( v.index(), 2 );
+        BOOST_TEST_EQ( get<2>(v), 0 );
+
+        v.emplace<3>( "s1" );
+        BOOST_TEST_EQ( v.index(), 3 );
+        BOOST_TEST_EQ( get<3>(v), std::string("s1") );
+
+        v.emplace<3>( "s2" );
+        BOOST_TEST_EQ( v.index(), 3 );
+        BOOST_TEST_EQ( get<3>(v), std::string("s2") );
+
+        v.emplace<3>();
+        BOOST_TEST_EQ( v.index(), 3 );
+        BOOST_TEST_EQ( get<3>(v), std::string() );
+
+        v.emplace<3>( { 'a', 'b' } );
+        BOOST_TEST_EQ( v.index(), 3 );
+        BOOST_TEST_EQ( get<3>(v), (std::string{ 'a', 'b'}) );
+
+        v.emplace<3>( { 'c', 'd' }, std::allocator<char>() );
+        BOOST_TEST_EQ( v.index(), 3 );
+        BOOST_TEST_EQ( get<3>(v), (std::string{ 'c', 'd'}) );
+    }
+
+    {
+        variant<X1, X2> v;
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v).v, 0 );
+
+        v.emplace<0>( 1 );
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v).v, 1 );
+
+        v.emplace<1>( 2 );
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v).v, 2 );
+
+        v.emplace<0>();
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v).v, 0 );
+
+        v.emplace<0>( 4 );
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v).v, 4 );
+
+        v.emplace<1>();
+
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v).v, 0 );
+
+        v.emplace<1>( 6 );
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v).v, 6 );
+
+        v.emplace<0>( 3 );
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v).v, 3 );
+
+        v.emplace<0>( 4 );
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v).v, 4 );
+    }
+
+    {
+        variant<Y1, Y2> v;
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v).v, 1 );
+
+        v.emplace<0>();
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v).v, 1 );
+
+        v.emplace<1>();
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v).v, 2 );
+
+        v.emplace<1>();
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v).v, 2 );
+
+        v.emplace<0>();
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v).v, 1 );
+    }
+
+    {
+        variant<Z1, Z2> v;
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v).v, 1 );
+        BOOST_TEST_EQ( Z1::instances, 1 );
+        BOOST_TEST_EQ( Z2::instances, 0 );
+
+        v.emplace<0>();
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v).v, 1 );
+        BOOST_TEST_EQ( Z1::instances, 1 );
+        BOOST_TEST_EQ( Z2::instances, 0 );
+
+        v.emplace<1>();
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v).v, 2 );
+        BOOST_TEST_EQ( Z1::instances, 0 );
+        BOOST_TEST_EQ( Z2::instances, 1 );
+
+        v.emplace<1>();
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v).v, 2 );
+        BOOST_TEST_EQ( Z1::instances, 0 );
+        BOOST_TEST_EQ( Z2::instances, 1 );
+
+        v.emplace<0>();
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v).v, 1 );
+        BOOST_TEST_EQ( Z1::instances, 1 );
+        BOOST_TEST_EQ( Z2::instances, 0 );
+    }
+
+    BOOST_TEST_EQ( Z1::instances, 0 );
+    BOOST_TEST_EQ( Z2::instances, 0 );
+
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_emplace_index_cx.cpp

@@ -0,0 +1,136 @@
+
+// Copyright 2017 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/variant2/variant.hpp>
+
+using namespace boost::variant2;
+
+struct X
+{
+    int v;
+    X() = default;
+    constexpr explicit X( int v ): v( v ) {}
+    constexpr operator int() const { return v; }
+};
+
+struct Y
+{
+    int v;
+    constexpr Y(): v() {}
+    constexpr explicit Y( int v ): v( v ) {}
+    constexpr operator int() const { return v; }
+};
+
+#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
+
+template<class V, std::size_t I, class A> constexpr A test( A const& a )
+{
+    V v;
+
+    v.template emplace<I>( a );
+
+    return get<I>(v);
+}
+
+int main()
+{
+    {
+        constexpr auto w = test<variant<int>, 0>( 1 );
+        STATIC_ASSERT( w == 1 );
+    }
+
+    {
+        constexpr auto w = test<variant<X>, 0>( 1 );
+        STATIC_ASSERT( w == 1 );
+    }
+
+#if defined( BOOST_LIBSTDCXX_VERSION ) && BOOST_LIBSTDCXX_VERSION < 50000
+#else
+
+    {
+        constexpr auto w = test<variant<Y>, 0>( 1 );
+        STATIC_ASSERT( w == 1 );
+    }
+
+#endif
+
+    {
+        constexpr auto w = test<variant<int, float>, 0>( 1 );
+        STATIC_ASSERT( w == 1 );
+    }
+
+    {
+        constexpr auto w = test<variant<int, float>, 1>( 3.0f );
+        STATIC_ASSERT( w == 3.0f );
+    }
+
+    {
+        constexpr auto w = test<variant<int, int, float, float, X, X>, 0>( 1 );
+        STATIC_ASSERT( w == 1 );
+    }
+
+    {
+        constexpr auto w = test<variant<int, int, float, float, X, X>, 1>( 1 );
+        STATIC_ASSERT( w == 1 );
+    }
+
+    {
+        constexpr auto w = test<variant<int, int, float, float, X, X>, 2>( 2.0f );
+        STATIC_ASSERT( w == 2.0f );
+    }
+
+    {
+        constexpr auto w = test<variant<int, int, float, float, X, X>, 3>( 3.0f );
+        STATIC_ASSERT( w == 3.0f );
+    }
+
+    {
+        constexpr auto w = test<variant<int, int, float, float, X, X>, 4>( 4 );
+        STATIC_ASSERT( w == 4 );
+    }
+
+    {
+        constexpr auto w = test<variant<int, int, float, float, X, X>, 5>( 5 );
+        STATIC_ASSERT( w == 5 );
+    }
+
+#if defined( BOOST_LIBSTDCXX_VERSION ) && BOOST_LIBSTDCXX_VERSION < 50000
+#else
+
+    {
+        constexpr auto w = test<variant<int, int, float, float, Y, Y>, 0>( 1 );
+        STATIC_ASSERT( w == 1 );
+    }
+
+    {
+        constexpr auto w = test<variant<int, int, float, float, Y, Y>, 1>( 1 );
+        STATIC_ASSERT( w == 1 );
+    }
+
+    {
+        constexpr auto w = test<variant<int, int, float, float, Y, Y>, 2>( 2.0f );
+        STATIC_ASSERT( w == 2.0f );
+    }
+
+    {
+        constexpr auto w = test<variant<int, int, float, float, Y, Y>, 3>( 3.0f );
+        STATIC_ASSERT( w == 3.0f );
+    }
+
+    {
+        constexpr auto w = test<variant<int, int, float, float, Y, Y>, 4>( 4 );
+        STATIC_ASSERT( w == 4 );
+    }
+
+    {
+        constexpr auto w = test<variant<int, int, float, float, Y, Y>, 5>( 5 );
+        STATIC_ASSERT( w == 5 );
+    }
+
+#endif
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_emplace_type.cpp

@@ -0,0 +1,194 @@
+
+// Copyright 2017 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/variant2/variant.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+#include <type_traits>
+#include <utility>
+#include <string>
+
+using namespace boost::variant2;
+
+#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
+
+struct X1
+{
+    int v;
+
+    X1(): v(0) {}
+    explicit X1(int v): v(v) {}
+    X1(X1 const& r): v(r.v) {}
+    X1(X1&& r): v(r.v) {}
+    X1& operator=( X1 const& r ) { v = r.v; return *this; }
+    X1& operator=( X1&& r ) { v = r.v; return *this; }
+};
+
+inline bool operator==( X1 const& a, X1 const& b ) { return a.v == b.v; }
+
+STATIC_ASSERT( !std::is_nothrow_default_constructible<X1>::value );
+STATIC_ASSERT( !std::is_nothrow_copy_constructible<X1>::value );
+STATIC_ASSERT( !std::is_nothrow_move_constructible<X1>::value );
+STATIC_ASSERT( !std::is_nothrow_copy_assignable<X1>::value );
+STATIC_ASSERT( !std::is_nothrow_move_assignable<X1>::value );
+
+struct X2
+{
+    int v;
+
+    X2(): v(0) {}
+    explicit X2(int v): v(v) {}
+    X2(X2 const& r): v(r.v) {}
+    X2(X2&& r): v(r.v) {}
+    X2& operator=( X2 const& r ) { v = r.v; return *this; }
+    X2& operator=( X2&& r ) { v = r.v; return *this; }
+};
+
+inline bool operator==( X2 const& a, X2 const& b ) { return a.v == b.v; }
+
+STATIC_ASSERT( !std::is_nothrow_default_constructible<X2>::value );
+STATIC_ASSERT( !std::is_nothrow_copy_constructible<X2>::value );
+STATIC_ASSERT( !std::is_nothrow_move_constructible<X2>::value );
+STATIC_ASSERT( !std::is_nothrow_copy_assignable<X2>::value );
+STATIC_ASSERT( !std::is_nothrow_move_assignable<X2>::value );
+
+struct Y1
+{
+};
+
+struct Y2
+{
+    ~Y2() {}
+};
+
+struct Guard
+{
+    explicit Guard(int) {}
+    Guard(Guard&&) = delete;
+};
+
+int main()
+{
+    {
+        variant<int> v;
+        BOOST_TEST_EQ( get<0>(v), 0 );
+
+        v.emplace<int>( 1 );
+        BOOST_TEST_EQ( get<0>(v), 1 );
+
+        v.emplace<int>();
+        BOOST_TEST_EQ( get<0>(v), 0 );
+    }
+
+    {
+        variant<int, float> v;
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 0 );
+
+        v.emplace<int>( 1 );
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 1 );
+
+        v.emplace<float>( 3.14f );
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v), 3.14f );
+
+        v.emplace<float>();
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v), 0 );
+
+        v.emplace<int>();
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 0 );
+    }
+
+    {
+        variant<int, int, float, std::string> v;
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 0 );
+
+        v.emplace<float>( 3.14f );
+        BOOST_TEST_EQ( v.index(), 2 );
+        BOOST_TEST_EQ( get<2>(v), 3.14f );
+
+        v.emplace<float>();
+        BOOST_TEST_EQ( v.index(), 2 );
+        BOOST_TEST_EQ( get<2>(v), 0 );
+
+        v.emplace<std::string>( "s1" );
+        BOOST_TEST_EQ( v.index(), 3 );
+        BOOST_TEST_EQ( get<3>(v), std::string("s1") );
+
+        v.emplace<std::string>( "s2" );
+        BOOST_TEST_EQ( v.index(), 3 );
+        BOOST_TEST_EQ( get<3>(v), std::string("s2") );
+
+        v.emplace<std::string>();
+        BOOST_TEST_EQ( v.index(), 3 );
+        BOOST_TEST_EQ( get<3>(v), std::string() );
+
+        v.emplace<std::string>( { 'a', 'b' } );
+        BOOST_TEST_EQ( v.index(), 3 );
+        BOOST_TEST_EQ( get<3>(v), (std::string{ 'a', 'b' }) );
+
+        v.emplace<std::string>( { 'c', 'd' }, std::allocator<char>() );
+        BOOST_TEST_EQ( v.index(), 3 );
+        BOOST_TEST_EQ( get<3>(v), (std::string{ 'c', 'd' }) );
+    }
+
+    {
+        variant<X1, X2> v;
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v).v, 0 );
+
+        v.emplace<X1>( 1 );
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v).v, 1 );
+
+        v.emplace<X2>( 2 );
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v).v, 2 );
+
+        v.emplace<X1>();
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v).v, 0 );
+
+        v.emplace<X1>( 4 );
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v).v, 4 );
+
+        v.emplace<X2>();
+
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v).v, 0 );
+
+        v.emplace<X2>( 6 );
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v).v, 6 );
+
+        v.emplace<X1>( 3 );
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v).v, 3 );
+
+        v.emplace<X1>( 4 );
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v).v, 4 );
+    }
+
+    {
+        variant<Y1, Guard> v;
+        v.emplace<Guard>( 1 );
+    }
+
+    {
+        variant<Y2, Guard> v;
+        v.emplace<Guard>( 1 );
+    }
+
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_emplace_type_cx.cpp

@@ -0,0 +1,91 @@
+
+// Copyright 2017 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/variant2/variant.hpp>
+
+using namespace boost::variant2;
+
+struct X
+{
+    int v;
+    X() = default;
+    constexpr explicit X( int v ): v( v ) {}
+    constexpr operator int() const { return v; }
+};
+
+struct Y
+{
+    int v;
+    constexpr Y(): v() {}
+    constexpr explicit Y( int v ): v( v ) {}
+    constexpr operator int() const { return v; }
+};
+
+#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
+
+template<class V, class T, class A> constexpr A test( A const& a )
+{
+    V v;
+
+    v.template emplace<T>( a );
+
+    return get<T>(v);
+}
+
+int main()
+{
+    {
+        constexpr auto w = test<variant<int>, int>( 1 );
+        STATIC_ASSERT( w == 1 );
+    }
+
+    {
+        constexpr auto w = test<variant<X>, X>( 1 );
+        STATIC_ASSERT( w == 1 );
+    }
+
+#if defined( BOOST_LIBSTDCXX_VERSION ) && BOOST_LIBSTDCXX_VERSION < 50000
+#else
+
+    {
+        constexpr auto w = test<variant<Y>, Y>( 1 );
+        STATIC_ASSERT( w == 1 );
+    }
+
+#endif
+
+    {
+        constexpr auto w = test<variant<int, float>, int>( 1 );
+        STATIC_ASSERT( w == 1 );
+    }
+
+    {
+        constexpr auto w = test<variant<int, float>, float>( 3.0f );
+        STATIC_ASSERT( w == 3.0f );
+    }
+
+    {
+        constexpr auto w = test<variant<int, int, float>, float>( 3.0f );
+        STATIC_ASSERT( w == 3.0f );
+    }
+
+    {
+        constexpr auto w = test<variant<int, int, float, float, X>, X>( 1 );
+        STATIC_ASSERT( w == 1 );
+    }
+
+#if defined( BOOST_LIBSTDCXX_VERSION ) && BOOST_LIBSTDCXX_VERSION < 50000
+#else
+
+    {
+        constexpr auto w = test<variant<int, int, float, float, Y>, Y>( 1 );
+        STATIC_ASSERT( w == 1 );
+    }
+
+#endif
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_eq_ne.cpp

@@ -0,0 +1,99 @@
+
+// Copyright 2017 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/variant2/variant.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+#include <type_traits>
+#include <utility>
+#include <string>
+
+using namespace boost::variant2;
+
+struct X
+{
+};
+
+inline bool operator==( X const&, X const& ) { return false; }
+inline bool operator!=( X const&, X const& ) { return false; }
+
+int main()
+{
+    {
+        variant<int> v1, v2, v3( 1 ), v4( 1 );
+
+        BOOST_TEST( v1 == v2 );
+        BOOST_TEST_NOT( v1 != v2 );
+
+        BOOST_TEST( v1 != v3 );
+        BOOST_TEST_NOT( v1 == v3 );
+
+        BOOST_TEST( v3 == v4 );
+        BOOST_TEST_NOT( v3 != v4 );
+    }
+
+    {
+        variant<int, float> v1, v2, v3( 1 ), v4( 1 ), v5( 3.14f ), v6( 3.14f );
+
+        BOOST_TEST( v1 == v2 );
+        BOOST_TEST_NOT( v1 != v2 );
+
+        BOOST_TEST( v1 != v3 );
+        BOOST_TEST_NOT( v1 == v3 );
+
+        BOOST_TEST( v3 == v4 );
+        BOOST_TEST_NOT( v3 != v4 );
+
+        BOOST_TEST( v1 != v5 );
+        BOOST_TEST_NOT( v1 == v5 );
+
+        BOOST_TEST( v3 != v5 );
+        BOOST_TEST_NOT( v3 == v5 );
+
+        BOOST_TEST( v5 == v6 );
+        BOOST_TEST_NOT( v5 != v6 );
+    }
+
+    {
+        variant<int, int, float> v1, v2, v3( in_place_index_t<1>{} ), v4( in_place_index_t<1>{} ), v5( 3.14f ), v6( 3.14f );
+
+        BOOST_TEST( v1 == v2 );
+        BOOST_TEST_NOT( v1 != v2 );
+
+        BOOST_TEST( v1 != v3 );
+        BOOST_TEST_NOT( v1 == v3 );
+
+        BOOST_TEST( v3 == v4 );
+        BOOST_TEST_NOT( v3 != v4 );
+
+        BOOST_TEST( v1 != v5 );
+        BOOST_TEST_NOT( v1 == v5 );
+
+        BOOST_TEST( v3 != v5 );
+        BOOST_TEST_NOT( v3 == v5 );
+
+        BOOST_TEST( v5 == v6 );
+        BOOST_TEST_NOT( v5 != v6 );
+    }
+
+    {
+        variant<X> v1, v2;
+
+        BOOST_TEST_NOT( v1 == v2 );
+        BOOST_TEST_NOT( v1 != v2 );
+    }
+
+    {
+        variant<monostate> v1, v2;
+
+        BOOST_TEST( v1 == v2 );
+        BOOST_TEST_NOT( v1 != v2 );
+    }
+
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_eq_ne_cx.cpp

@@ -0,0 +1,105 @@
+
+// Copyright 2017, 2019 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/variant2/variant.hpp>
+using namespace boost::variant2;
+
+#if !defined(BOOST_MP11_HAS_CXX14_CONSTEXPR)
+
+#include <boost/config/pragma_message.hpp>
+
+BOOST_PRAGMA_MESSAGE("Skipping constexpr op==, op!= test because BOOST_MP11_HAS_CXX14_CONSTEXPR is not defined")
+
+int main() {}
+
+#else
+
+struct X
+{
+};
+
+inline constexpr bool operator==( X const&, X const& ) { return false; }
+inline constexpr bool operator!=( X const&, X const& ) { return false; }
+
+#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
+
+int main()
+{
+    {
+        constexpr variant<int> v1, v2, v3( 1 ), v4( 1 );
+
+        STATIC_ASSERT( v1 == v2 );
+        STATIC_ASSERT( !(v1 != v2) );
+
+        STATIC_ASSERT( v1 != v3 );
+        STATIC_ASSERT( !(v1 == v3) );
+
+        STATIC_ASSERT( v3 == v4 );
+        STATIC_ASSERT( !(v3 != v4) );
+    }
+
+    {
+        constexpr variant<int, float> v1, v2, v3( 1 ), v4( 1 ), v5( 3.14f ), v6( 3.14f );
+
+        STATIC_ASSERT( v1 == v2 );
+        STATIC_ASSERT( !(v1 != v2) );
+
+        STATIC_ASSERT( v1 != v3 );
+        STATIC_ASSERT( !(v1 == v3) );
+
+        STATIC_ASSERT( v3 == v4 );
+        STATIC_ASSERT( !(v3 != v4) );
+
+        STATIC_ASSERT( v1 != v5 );
+        STATIC_ASSERT( !(v1 == v5) );
+
+        STATIC_ASSERT( v3 != v5 );
+        STATIC_ASSERT( !(v3 == v5) );
+
+        STATIC_ASSERT( v5 == v6 );
+        STATIC_ASSERT( !(v5 != v6) );
+    }
+
+    {
+        constexpr variant<int, int, float> v1, v2, v3( in_place_index_t<1>{} ), v4( in_place_index_t<1>{} ), v5( 3.14f ), v6( 3.14f );
+
+        STATIC_ASSERT( v1 == v2 );
+        STATIC_ASSERT( !(v1 != v2) );
+
+        STATIC_ASSERT( v1 != v3 );
+        STATIC_ASSERT( !(v1 == v3) );
+
+        STATIC_ASSERT( v3 == v4 );
+        STATIC_ASSERT( !(v3 != v4) );
+
+        STATIC_ASSERT( v1 != v5 );
+        STATIC_ASSERT( !(v1 == v5) );
+
+        STATIC_ASSERT( v3 != v5 );
+        STATIC_ASSERT( !(v3 == v5) );
+
+        STATIC_ASSERT( v5 == v6 );
+        STATIC_ASSERT( !(v5 != v6) );
+    }
+
+    {
+        constexpr variant<X> v1, v2;
+
+        STATIC_ASSERT( !(v1 == v2) );
+        STATIC_ASSERT( !(v1 != v2) );
+    }
+
+    {
+        constexpr variant<monostate> v1, v2;
+
+        STATIC_ASSERT( v1 == v2 );
+        STATIC_ASSERT( !(v1 != v2) );
+    }
+}
+
+#endif

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_get_by_index.cpp

@@ -0,0 +1,355 @@
+
+// Copyright 2017 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
+
+#if defined( __clang__ ) && defined( __has_warning )
+# if __has_warning( "-Wdeprecated-volatile" )
+#  pragma clang diagnostic ignored "-Wdeprecated-volatile"
+# endif
+#endif
+
+#include <boost/variant2/variant.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+#include <type_traits>
+#include <utility>
+#include <string>
+
+using namespace boost::variant2;
+
+int main()
+{
+    {
+        variant<int> v;
+
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<0>(v)), int&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<0>(std::move(v))), int&&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get_if<0>(&v)), int*>));
+    }
+
+    {
+        variant<int> const v;
+
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<0>(v)), int const&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<0>(std::move(v))), int const&&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get_if<0>(&v)), int const*>));
+    }
+
+    {
+        variant<int const> v;
+
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<0>(v)), int const&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<0>(std::move(v))), int const&&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get_if<0>(&v)), int const*>));
+    }
+
+    {
+        variant<int volatile> const v;
+
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<0>(v)), int const volatile&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<0>(std::move(v))), int const volatile&&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get_if<0>(&v)), int const volatile*>));
+    }
+
+    {
+        variant<int> v;
+
+        BOOST_TEST_EQ( get<0>(v), 0 );
+        BOOST_TEST_EQ( get_if<0>(&v), &get<0>(v) );
+
+        BOOST_TEST_EQ( get<0>(std::move(v)), 0 );
+    }
+
+    {
+        variant<int> const v;
+
+        BOOST_TEST_EQ( get<0>(v), 0 );
+        BOOST_TEST_EQ( get_if<0>(&v), &get<0>(v) );
+
+        BOOST_TEST_EQ( get<0>(std::move(v)), 0 );
+    }
+
+    {
+        variant<int> v( 1 );
+
+        BOOST_TEST_EQ( get<0>(v), 1 );
+        BOOST_TEST_EQ( get_if<0>(&v), &get<0>(v) );
+
+        BOOST_TEST_EQ( get<0>(std::move(v)), 1 );
+    }
+
+    {
+        variant<int> const v( 1 );
+
+        BOOST_TEST_EQ( get<0>(v), 1 );
+        BOOST_TEST_EQ( get_if<0>(&v), &get<0>(v) );
+
+        BOOST_TEST_EQ( get<0>(std::move(v)), 1 );
+    }
+
+    {
+        variant<int, float> v;
+
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<0>(v)), int&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<0>(std::move(v))), int&&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get_if<0>(&v)), int*>));
+
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<1>(v)), float&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<1>(std::move(v))), float&&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get_if<1>(&v)), float*>));
+    }
+
+    {
+        variant<int, float> const v;
+
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<0>(v)), int const&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<0>(std::move(v))), int const&&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get_if<0>(&v)), int const*>));
+
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<1>(v)), float const&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<1>(std::move(v))), float const&&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get_if<1>(&v)), float const*>));
+    }
+
+    {
+        variant<int const, float volatile> v;
+
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<0>(v)), int const&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<0>(std::move(v))), int const&&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get_if<0>(&v)), int const*>));
+
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<1>(v)), float volatile&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<1>(std::move(v))), float volatile&&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get_if<1>(&v)), float volatile*>));
+    }
+
+    {
+        variant<int const, float volatile> const v;
+
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<0>(v)), int const&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<0>(std::move(v))), int const&&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get_if<0>(&v)), int const*>));
+
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<1>(v)), float const volatile&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<1>(std::move(v))), float const volatile&&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get_if<1>(&v)), float const volatile*>));
+    }
+
+    {
+        variant<int, float> v;
+
+        BOOST_TEST_EQ( get<0>(v), 0 );
+        BOOST_TEST_EQ( get_if<0>(&v), &get<0>(v) );
+
+        BOOST_TEST_THROWS( get<1>(v), bad_variant_access );
+        BOOST_TEST_EQ( get_if<1>(&v), nullptr );
+
+        BOOST_TEST_EQ( get<0>(std::move(v)), 0 );
+    }
+
+    {
+        variant<int, float> const v;
+
+        BOOST_TEST_EQ( get<0>(v), 0 );
+        BOOST_TEST_EQ( get_if<0>(&v), &get<0>(v) );
+
+        BOOST_TEST_THROWS( get<1>(v), bad_variant_access );
+        BOOST_TEST_EQ( get_if<1>(&v), nullptr );
+
+        BOOST_TEST_EQ( get<0>(std::move(v)), 0 );
+    }
+
+    {
+        variant<int, float> v( 1 );
+
+        BOOST_TEST_EQ( get<0>(v), 1 );
+        BOOST_TEST_EQ( get_if<0>(&v), &get<0>(v) );
+
+        BOOST_TEST_THROWS( get<1>(v), bad_variant_access );
+        BOOST_TEST_EQ( get_if<1>(&v), nullptr );
+
+        BOOST_TEST_EQ( get<0>(std::move(v)), 1 );
+    }
+
+    {
+        variant<int, float> const v( 1 );
+
+        BOOST_TEST_EQ( get<0>(v), 1 );
+        BOOST_TEST_EQ( get_if<0>(&v), &get<0>(v) );
+
+        BOOST_TEST_THROWS( get<1>(v), bad_variant_access );
+        BOOST_TEST_EQ( get_if<1>(&v), nullptr );
+
+        BOOST_TEST_EQ( get<0>(std::move(v)), 1 );
+    }
+
+    {
+        variant<int, float> v( 3.14f );
+
+        BOOST_TEST_THROWS( get<0>(v), bad_variant_access );
+        BOOST_TEST_EQ( get_if<0>(&v), nullptr );
+
+        BOOST_TEST_EQ( get<1>(v), 3.14f );
+        BOOST_TEST_EQ( get_if<1>(&v), &get<1>(v) );
+
+        BOOST_TEST_EQ( get<1>(std::move(v)), 3.14f );
+    }
+
+    {
+        variant<int, float> const v( 3.14f );
+
+        BOOST_TEST_THROWS( get<0>(v), bad_variant_access );
+        BOOST_TEST_EQ( get_if<0>(&v), nullptr );
+
+        BOOST_TEST_EQ( get<1>(v), 3.14f );
+        BOOST_TEST_EQ( get_if<1>(&v), &get<1>(v) );
+
+        BOOST_TEST_EQ( get<1>(std::move(v)), 3.14f );
+    }
+
+    {
+        variant<int, float, float> v;
+
+        BOOST_TEST_EQ( get<0>(v), 0 );
+        BOOST_TEST_EQ( get_if<0>(&v), &get<0>(v) );
+
+        BOOST_TEST_THROWS( get<1>(v), bad_variant_access );
+        BOOST_TEST_EQ( get_if<1>(&v), nullptr );
+
+        BOOST_TEST_THROWS( get<2>(v), bad_variant_access );
+        BOOST_TEST_EQ( get_if<2>(&v), nullptr );
+
+        BOOST_TEST_EQ( get<0>(std::move(v)), 0 );
+    }
+
+    {
+        variant<int, float, float> const v;
+
+        BOOST_TEST_EQ( get<0>(v), 0 );
+        BOOST_TEST_EQ( get_if<0>(&v), &get<0>(v) );
+
+        BOOST_TEST_THROWS( get<1>(v), bad_variant_access );
+        BOOST_TEST_EQ( get_if<1>(&v), nullptr );
+
+        BOOST_TEST_THROWS( get<2>(v), bad_variant_access );
+        BOOST_TEST_EQ( get_if<2>(&v), nullptr );
+
+        BOOST_TEST_EQ( get<0>(std::move(v)), 0 );
+    }
+
+    {
+        variant<int, float, float> v( 1 );
+
+        BOOST_TEST_EQ( get<0>(v), 1 );
+        BOOST_TEST_EQ( get_if<0>(&v), &get<0>(v) );
+
+        BOOST_TEST_THROWS( get<1>(v), bad_variant_access );
+        BOOST_TEST_EQ( get_if<1>(&v), nullptr );
+
+        BOOST_TEST_THROWS( get<2>(v), bad_variant_access );
+        BOOST_TEST_EQ( get_if<2>(&v), nullptr );
+
+        BOOST_TEST_EQ( get<0>(std::move(v)), 1 );
+    }
+
+    {
+        variant<int, float, float> const v( 1 );
+
+        BOOST_TEST_EQ( get<0>(v), 1 );
+        BOOST_TEST_EQ( get_if<0>(&v), &get<0>(v) );
+
+        BOOST_TEST_THROWS( get<1>(v), bad_variant_access );
+        BOOST_TEST_EQ( get_if<1>(&v), nullptr );
+
+        BOOST_TEST_THROWS( get<2>(v), bad_variant_access );
+        BOOST_TEST_EQ( get_if<2>(&v), nullptr );
+
+        BOOST_TEST_EQ( get<0>(std::move(v)), 1 );
+    }
+
+    {
+        variant<int, int, float> v( 3.14f );
+
+        BOOST_TEST_THROWS( get<0>(v), bad_variant_access );
+        BOOST_TEST_EQ( get_if<0>(&v), nullptr );
+
+        BOOST_TEST_THROWS( get<1>(v), bad_variant_access );
+        BOOST_TEST_EQ( get_if<1>(&v), nullptr );
+
+        BOOST_TEST_EQ( get<2>(v), 3.14f );
+        BOOST_TEST_EQ( get_if<2>(&v), &get<2>(v) );
+
+        BOOST_TEST_EQ( get<2>(std::move(v)), 3.14f );
+    }
+
+    {
+        variant<int, int, float> const v( 3.14f );
+
+        BOOST_TEST_THROWS( get<0>(v), bad_variant_access );
+        BOOST_TEST_EQ( get_if<0>(&v), nullptr );
+
+        BOOST_TEST_THROWS( get<1>(v), bad_variant_access );
+        BOOST_TEST_EQ( get_if<1>(&v), nullptr );
+
+        BOOST_TEST_EQ( get<2>(v), 3.14f );
+        BOOST_TEST_EQ( get_if<2>(&v), &get<2>(v) );
+
+        BOOST_TEST_EQ( get<2>(std::move(v)), 3.14f );
+    }
+
+    {
+        variant<int> * p = 0;
+        BOOST_TEST_EQ( get_if<0>(p), nullptr );
+    }
+
+    {
+        variant<int const> * p = 0;
+        BOOST_TEST_EQ( get_if<0>(p), nullptr );
+    }
+
+    {
+        variant<int> const * p = 0;
+        BOOST_TEST_EQ( get_if<0>(p), nullptr );
+    }
+
+    {
+        variant<int const> const * p = 0;
+        BOOST_TEST_EQ( get_if<0>(p), nullptr );
+    }
+
+    {
+        variant<int, float> * p = 0;
+        BOOST_TEST_EQ( get_if<0>(p), nullptr );
+    }
+
+    {
+        variant<int, float> const * p = 0;
+        BOOST_TEST_EQ( get_if<0>(p), nullptr );
+    }
+
+    {
+        variant<int const, float volatile> * p = 0;
+        BOOST_TEST_EQ( get_if<0>(p), nullptr );
+    }
+
+    {
+        variant<int const, float volatile> const * p = 0;
+        BOOST_TEST_EQ( get_if<0>(p), nullptr );
+    }
+
+    {
+        variant<int, int, float, float> * p = 0;
+        BOOST_TEST_EQ( get_if<0>(p), nullptr );
+    }
+
+    {
+        variant<int, int, float, float> const * p = 0;
+        BOOST_TEST_EQ( get_if<0>(p), nullptr );
+    }
+
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_get_by_index_cx.cpp

@@ -0,0 +1,96 @@
+
+// Copyright 2017 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/variant2/variant.hpp>
+#include <boost/config.hpp>
+
+using namespace boost::variant2;
+
+#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
+
+#if BOOST_WORKAROUND(BOOST_GCC, < 50000)
+# define STATIC_ASSERT_IF(...)
+#else
+# define STATIC_ASSERT_IF(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
+#endif
+
+int main()
+{
+    {
+        constexpr variant<int> v;
+
+        STATIC_ASSERT( get<0>(v) == 0 );
+
+        STATIC_ASSERT_IF( get_if<0>(&v) == &get<0>(v) );
+    }
+
+    {
+        constexpr variant<int> v( 1 );
+
+        STATIC_ASSERT( get<0>(v) == 1 );
+
+        STATIC_ASSERT_IF( get_if<0>(&v) == &get<0>(v) );
+    }
+
+    {
+        constexpr variant<int, float> v;
+
+        STATIC_ASSERT( get<0>(v) == 0 );
+
+        STATIC_ASSERT_IF( get_if<0>(&v) == &get<0>(v) );
+        STATIC_ASSERT_IF( get_if<1>(&v) == nullptr );
+    }
+
+    {
+        constexpr variant<int, float> v( 1 );
+
+        STATIC_ASSERT( get<0>(v) == 1 );
+
+        STATIC_ASSERT_IF( get_if<0>(&v) == &get<0>(v) );
+        STATIC_ASSERT_IF( get_if<1>(&v) == nullptr );
+    }
+
+    {
+        constexpr variant<int, float> v( 3.14f );
+
+        STATIC_ASSERT( get<1>(v) == 3.14f );
+
+        STATIC_ASSERT_IF( get_if<0>(&v) == nullptr );
+        STATIC_ASSERT_IF( get_if<1>(&v) == &get<1>(v) );
+    }
+
+    {
+        constexpr variant<int, float, float> v;
+
+        STATIC_ASSERT( get<0>(v) == 0 );
+
+        STATIC_ASSERT_IF( get_if<0>(&v) == &get<0>(v) );
+        STATIC_ASSERT_IF( get_if<1>(&v) == nullptr );
+        STATIC_ASSERT_IF( get_if<2>(&v) == nullptr );
+    }
+
+    {
+        constexpr variant<int, float, float> v( 1 );
+
+        STATIC_ASSERT( get<0>(v) == 1 );
+
+        STATIC_ASSERT_IF( get_if<0>(&v) == &get<0>(v) );
+        STATIC_ASSERT_IF( get_if<1>(&v) == nullptr );
+        STATIC_ASSERT_IF( get_if<2>(&v) == nullptr );
+    }
+
+    {
+        constexpr variant<int, int, float> v( 3.14f );
+
+        STATIC_ASSERT( get<2>(v) == 3.14f );
+
+        STATIC_ASSERT_IF( get_if<0>(&v) == nullptr );
+        STATIC_ASSERT_IF( get_if<1>(&v) == nullptr );
+        STATIC_ASSERT_IF( get_if<2>(&v) == &get<2>(v) );
+    }
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_get_by_type.cpp

@@ -0,0 +1,313 @@
+
+// Copyright 2017 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
+
+#if defined( __clang__ ) && defined( __has_warning )
+# if __has_warning( "-Wdeprecated-volatile" )
+#  pragma clang diagnostic ignored "-Wdeprecated-volatile"
+# endif
+#endif
+
+#include <boost/variant2/variant.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+#include <type_traits>
+#include <utility>
+#include <string>
+
+using namespace boost::variant2;
+
+int main()
+{
+    {
+        variant<int> v;
+
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<int>(v)), int&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<int>(std::move(v))), int&&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get_if<int>(&v)), int*>));
+    }
+
+    {
+        variant<int> const v;
+
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<int>(v)), int const&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<int>(std::move(v))), int const&&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get_if<int>(&v)), int const*>));
+    }
+
+    {
+        variant<int const> v;
+
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<int const>(v)), int const&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<int const>(std::move(v))), int const&&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get_if<int const>(&v)), int const*>));
+    }
+
+    {
+        variant<int volatile> const v;
+
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<int volatile>(v)), int const volatile&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<int volatile>(std::move(v))), int const volatile&&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get_if<int volatile>(&v)), int const volatile*>));
+    }
+
+    {
+        variant<int> v;
+
+        BOOST_TEST_EQ( get<int>(v), 0 );
+        BOOST_TEST_EQ( get_if<int>(&v), &get<int>(v) );
+
+        BOOST_TEST_EQ( get<int>(std::move(v)), 0 );
+    }
+
+    {
+        variant<int> const v;
+
+        BOOST_TEST_EQ( get<int>(v), 0 );
+        BOOST_TEST_EQ( get_if<int>(&v), &get<int>(v) );
+
+        BOOST_TEST_EQ( get<int>(std::move(v)), 0 );
+    }
+
+    {
+        variant<int> v( 1 );
+
+        BOOST_TEST_EQ( get<int>(v), 1 );
+        BOOST_TEST_EQ( get_if<int>(&v), &get<int>(v) );
+
+        BOOST_TEST_EQ( get<int>(std::move(v)), 1 );
+    }
+
+    {
+        variant<int> const v( 1 );
+
+        BOOST_TEST_EQ( get<int>(v), 1 );
+        BOOST_TEST_EQ( get_if<int>(&v), &get<int>(v) );
+
+        BOOST_TEST_EQ( get<int>(std::move(v)), 1 );
+    }
+
+    {
+        variant<int, float> v;
+
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<int>(v)), int&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<int>(std::move(v))), int&&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get_if<int>(&v)), int*>));
+
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<float>(v)), float&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<float>(std::move(v))), float&&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get_if<float>(&v)), float*>));
+    }
+
+    {
+        variant<int, float> const v;
+
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<int>(v)), int const&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<int>(std::move(v))), int const&&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get_if<int>(&v)), int const*>));
+
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<float>(v)), float const&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<float>(std::move(v))), float const&&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get_if<float>(&v)), float const*>));
+    }
+
+    {
+        variant<int const, float volatile> v;
+
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<int const>(v)), int const&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<int const>(std::move(v))), int const&&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get_if<int const>(&v)), int const*>));
+
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<float volatile>(v)), float volatile&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<float volatile>(std::move(v))), float volatile&&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get_if<float volatile>(&v)), float volatile*>));
+    }
+
+    {
+        variant<int const, float volatile> const v;
+
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<int const>(v)), int const&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<int const>(std::move(v))), int const&&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get_if<int const>(&v)), int const*>));
+
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<float volatile>(v)), float const volatile&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<float volatile>(std::move(v))), float const volatile&&>));
+        BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get_if<float volatile>(&v)), float const volatile*>));
+    }
+
+    {
+        variant<int, float> v;
+
+        BOOST_TEST_EQ( get<int>(v), 0 );
+        BOOST_TEST_EQ( get_if<int>(&v), &get<int>(v) );
+
+        BOOST_TEST_THROWS( get<float>(v), bad_variant_access );
+        BOOST_TEST_EQ( get_if<float>(&v), nullptr );
+
+        BOOST_TEST_EQ( get<int>(std::move(v)), 0 );
+    }
+
+    {
+        variant<int, float> const v;
+
+        BOOST_TEST_EQ( get<int>(v), 0 );
+        BOOST_TEST_EQ( get_if<int>(&v), &get<int>(v) );
+
+        BOOST_TEST_THROWS( get<float>(v), bad_variant_access );
+        BOOST_TEST_EQ( get_if<float>(&v), nullptr );
+
+        BOOST_TEST_EQ( get<int>(std::move(v)), 0 );
+    }
+
+    {
+        variant<int, float> v( 1 );
+
+        BOOST_TEST_EQ( get<int>(v), 1 );
+        BOOST_TEST_EQ( get_if<int>(&v), &get<int>(v) );
+
+        BOOST_TEST_THROWS( get<float>(v), bad_variant_access );
+        BOOST_TEST_EQ( get_if<float>(&v), nullptr );
+
+        BOOST_TEST_EQ( get<int>(std::move(v)), 1 );
+    }
+
+    {
+        variant<int, float> const v( 1 );
+
+        BOOST_TEST_EQ( get<int>(v), 1 );
+        BOOST_TEST_EQ( get_if<int>(&v), &get<int>(v) );
+
+        BOOST_TEST_THROWS( get<float>(v), bad_variant_access );
+        BOOST_TEST_EQ( get_if<float>(&v), nullptr );
+
+        BOOST_TEST_EQ( get<int>(std::move(v)), 1 );
+    }
+
+    {
+        variant<int, float> v( 3.14f );
+
+        BOOST_TEST_THROWS( get<int>(v), bad_variant_access );
+        BOOST_TEST_EQ( get_if<int>(&v), nullptr );
+
+        BOOST_TEST_EQ( get<float>(v), 3.14f );
+        BOOST_TEST_EQ( get_if<float>(&v), &get<float>(v) );
+
+        BOOST_TEST_EQ( get<float>(std::move(v)), 3.14f );
+    }
+
+    {
+        variant<int, float> const v( 3.14f );
+
+        BOOST_TEST_THROWS( get<int>(v), bad_variant_access );
+        BOOST_TEST_EQ( get_if<int>(&v), nullptr );
+
+        BOOST_TEST_EQ( get<float>(v), 3.14f );
+        BOOST_TEST_EQ( get_if<float>(&v), &get<float>(v) );
+
+        BOOST_TEST_EQ( get<float>(std::move(v)), 3.14f );
+    }
+
+    {
+        variant<int, float, float> v;
+
+        BOOST_TEST_EQ( get<int>(v), 0 );
+        BOOST_TEST_EQ( get_if<int>(&v), &get<int>(v) );
+
+        BOOST_TEST_EQ( get<int>(std::move(v)), 0 );
+    }
+
+    {
+        variant<int, float, float> const v;
+
+        BOOST_TEST_EQ( get<int>(v), 0 );
+        BOOST_TEST_EQ( get_if<int>(&v), &get<int>(v) );
+
+        BOOST_TEST_EQ( get<int>(std::move(v)), 0 );
+    }
+
+    {
+        variant<int, float, float> v( 1 );
+
+        BOOST_TEST_EQ( get<int>(v), 1 );
+        BOOST_TEST_EQ( get_if<int>(&v), &get<int>(v) );
+
+        BOOST_TEST_EQ( get<int>(std::move(v)), 1 );
+    }
+
+    {
+        variant<int, float, float> const v( 1 );
+
+        BOOST_TEST_EQ( get<int>(v), 1 );
+        BOOST_TEST_EQ( get_if<int>(&v), &get<int>(v) );
+
+        BOOST_TEST_EQ( get<int>(std::move(v)), 1 );
+    }
+
+    {
+        variant<int, int, float> v( 3.14f );
+
+        BOOST_TEST_EQ( get<float>(v), 3.14f );
+        BOOST_TEST_EQ( get_if<float>(&v), &get<float>(v) );
+
+        BOOST_TEST_EQ( get<float>(std::move(v)), 3.14f );
+    }
+
+    {
+        variant<int, int, float> const v( 3.14f );
+
+        BOOST_TEST_EQ( get<float>(v), 3.14f );
+        BOOST_TEST_EQ( get_if<float>(&v), &get<float>(v) );
+
+        BOOST_TEST_EQ( get<float>(std::move(v)), 3.14f );
+    }
+
+    {
+        variant<int> * p = 0;
+        BOOST_TEST_EQ( get_if<int>(p), nullptr );
+    }
+
+    {
+        variant<int const> * p = 0;
+        BOOST_TEST_EQ( get_if<int const>(p), nullptr );
+    }
+
+    {
+        variant<int> const * p = 0;
+        BOOST_TEST_EQ( get_if<int>(p), nullptr );
+    }
+
+    {
+        variant<int const> const * p = 0;
+        BOOST_TEST_EQ( get_if<int const>(p), nullptr );
+    }
+
+    {
+        variant<int, float> * p = 0;
+
+        BOOST_TEST_EQ( get_if<int>(p), nullptr );
+        BOOST_TEST_EQ( get_if<float>(p), nullptr );
+    }
+
+    {
+        variant<int, float> const * p = 0;
+
+        BOOST_TEST_EQ( get_if<int>(p), nullptr );
+        BOOST_TEST_EQ( get_if<float>(p), nullptr );
+    }
+
+    {
+        variant<int, int, float> * p = 0;
+        BOOST_TEST_EQ( get_if<float>(p), nullptr );
+    }
+
+    {
+        variant<int, int, float> const * p = 0;
+        BOOST_TEST_EQ( get_if<float>(p), nullptr );
+    }
+
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_get_by_type_cx.cpp

@@ -0,0 +1,90 @@
+
+// Copyright 2017 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/variant2/variant.hpp>
+#include <boost/config.hpp>
+
+using namespace boost::variant2;
+
+#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
+
+#if BOOST_WORKAROUND(BOOST_GCC, < 50000)
+# define STATIC_ASSERT_IF(...)
+#else
+# define STATIC_ASSERT_IF(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
+#endif
+
+int main()
+{
+    {
+        constexpr variant<int> v;
+
+        STATIC_ASSERT( get<int>(v) == 0 );
+
+        STATIC_ASSERT_IF( get_if<int>(&v) == &get<int>(v) );
+    }
+
+    {
+        constexpr variant<int> v( 1 );
+
+        STATIC_ASSERT( get<int>(v) == 1 );
+
+        STATIC_ASSERT_IF( get_if<int>(&v) == &get<int>(v) );
+    }
+
+    {
+        constexpr variant<int, float> v;
+
+        STATIC_ASSERT( get<int>(v) == 0 );
+
+        STATIC_ASSERT_IF( get_if<int>(&v) == &get<int>(v) );
+        STATIC_ASSERT_IF( get_if<float>(&v) == nullptr );
+    }
+
+    {
+        constexpr variant<int, float> v( 1 );
+
+        STATIC_ASSERT( get<int>(v) == 1 );
+
+        STATIC_ASSERT_IF( get_if<int>(&v) == &get<int>(v) );
+        STATIC_ASSERT_IF( get_if<float>(&v) == nullptr );
+    }
+
+    {
+        constexpr variant<int, float> v( 3.14f );
+
+        STATIC_ASSERT( get<float>(v) == 3.14f );
+
+        STATIC_ASSERT_IF( get_if<int>(&v) == nullptr );
+        STATIC_ASSERT_IF( get_if<float>(&v) == &get<float>(v) );
+    }
+
+    {
+        constexpr variant<int, float, float> v;
+
+        STATIC_ASSERT( get<int>(v) == 0 );
+
+        STATIC_ASSERT_IF( get_if<int>(&v) == &get<int>(v) );
+    }
+
+    {
+        constexpr variant<int, float, float> v( 1 );
+
+        STATIC_ASSERT( get<int>(v) == 1 );
+
+        STATIC_ASSERT_IF( get_if<int>(&v) == &get<int>(v) );
+    }
+
+    {
+        constexpr variant<int, int, float> v( 3.14f );
+
+        STATIC_ASSERT( get<float>(v) == 3.14f );
+
+        STATIC_ASSERT_IF( get_if<float>(&v) == &get<float>(v) );
+    }
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_hash.cpp

@@ -0,0 +1,86 @@
+
+// Copyright 2020 Peter Dimov.
+// Distributed under the Boost Software License, Version 1.0.
+// http://www.boost.org/LICENSE_1_0.txt
+
+#if defined(_MSC_VER)
+# pragma warning( disable: 4244 ) // conversion from int to float, possible loss of data
+#endif
+
+#include <boost/variant2/variant.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+#include <boost/container_hash/hash.hpp>
+#include <boost/config/workaround.hpp>
+#include <vector>
+
+using namespace boost::variant2;
+
+template<template<class...> class Hash, class T1, class T2, class T3> void test()
+{
+    variant<T1, T2, T3> v1( in_place_index_t<0>{} );
+    std::size_t h1 = Hash<decltype(v1)>()( v1 );
+
+    variant<T1, T2, T3> v2( in_place_index_t<1>{} );
+    std::size_t h2 = Hash<decltype(v2)>()( v2 );
+
+    variant<T1, T2, T3> v3( in_place_index_t<2>{} );
+    std::size_t h3 = Hash<decltype(v3)>()( v3 );
+
+    BOOST_TEST_NE( h1, h2 );
+    BOOST_TEST_NE( h1, h3 );
+    BOOST_TEST_NE( h2, h3 );
+}
+
+template<template<class...> class Hash, class T> void test2()
+{
+    variant<T> v1( 0 );
+    std::size_t h1 = Hash<decltype(v1)>()( v1 );
+
+    variant<T> v2( 1 );
+    std::size_t h2 = Hash<decltype(v2)>()( v2 );
+
+    variant<T> v3( 2 );
+    std::size_t h3 = Hash<decltype(v3)>()( v3 );
+
+    BOOST_TEST_NE( h1, h2 );
+    BOOST_TEST_NE( h1, h3 );
+    BOOST_TEST_NE( h2, h3 );
+}
+
+struct X
+{
+    int m = 0;
+};
+
+std::size_t hash_value( X const& x )
+{
+    return boost::hash<int>()( x.m );
+}
+
+struct Y {}; // no hash support
+
+int main()
+{
+    test<std::hash, monostate, monostate, monostate>();
+    test<std::hash, int, int, float>();
+
+    test<boost::hash, monostate, monostate, monostate>();
+    test<boost::hash, int, int, float>();
+
+    test<boost::hash, monostate, X, std::vector<X>>();
+
+    test2<std::hash, int>();
+    test2<std::hash, float>();
+
+    test2<boost::hash, int>();
+    test2<boost::hash, float>();
+
+#if !BOOST_WORKAROUND(BOOST_MSVC, < 1910) && ( !defined(_LIBCPP_STD_VER) || _LIBCPP_STD_VER > 11 )
+
+    BOOST_TEST_TRAIT_FALSE(( detail::is_hash_enabled<Y> ));
+
+#endif
+
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_holds_alternative.cpp

@@ -0,0 +1,78 @@
+
+// Copyright 2017 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/variant2/variant.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <string>
+
+using namespace boost::variant2;
+
+int main()
+{
+    {
+        variant<int> v;
+        BOOST_TEST( holds_alternative<int>( v ) );
+    }
+
+    {
+        variant<int, float> v;
+        BOOST_TEST( holds_alternative<int>( v ) );
+        BOOST_TEST( !holds_alternative<float>( v ) );
+    }
+
+    {
+        variant<int, float> v( 3.14f );
+        BOOST_TEST( !holds_alternative<int>( v ) );
+        BOOST_TEST( holds_alternative<float>( v ) );
+    }
+
+    {
+        variant<int, float, float> v;
+        BOOST_TEST( holds_alternative<int>( v ) );
+    }
+
+    {
+        variant<int, int, float> v( 3.14f );
+        BOOST_TEST( holds_alternative<float>( v ) );
+    }
+
+    {
+        variant<int, float, std::string> v;
+        BOOST_TEST( holds_alternative<int>( v ) );
+        BOOST_TEST( !holds_alternative<float>( v ) );
+        BOOST_TEST( !holds_alternative<std::string>( v ) );
+    }
+
+    {
+        variant<int, float, std::string> v( 3.14f );
+        BOOST_TEST( !holds_alternative<int>( v ) );
+        BOOST_TEST( holds_alternative<float>( v ) );
+        BOOST_TEST( !holds_alternative<std::string>( v ) );
+    }
+
+    {
+        variant<int, float, std::string> v( "text" );
+        BOOST_TEST( !holds_alternative<int>( v ) );
+        BOOST_TEST( !holds_alternative<float>( v ) );
+        BOOST_TEST( holds_alternative<std::string>( v ) );
+    }
+
+    {
+        variant<int, int, float, std::string> v( 3.14f );
+        BOOST_TEST( holds_alternative<float>( v ) );
+        BOOST_TEST( !holds_alternative<std::string>( v ) );
+    }
+
+    {
+        variant<int, int, float, std::string> v( "text" );
+        BOOST_TEST( !holds_alternative<float>( v ) );
+        BOOST_TEST( holds_alternative<std::string>( v ) );
+    }
+
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_holds_alternative_cx.cpp

@@ -0,0 +1,43 @@
+
+// Copyright 2017 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/variant2/variant.hpp>
+
+using namespace boost::variant2;
+
+#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
+
+int main()
+{
+    {
+        constexpr variant<int> v;
+        STATIC_ASSERT( holds_alternative<int>( v ) );
+    }
+
+    {
+        constexpr variant<int, float> v;
+        STATIC_ASSERT( holds_alternative<int>( v ) );
+        STATIC_ASSERT( !holds_alternative<float>( v ) );
+    }
+
+    {
+        constexpr variant<int, float> v( 3.14f );
+        STATIC_ASSERT( !holds_alternative<int>( v ) );
+        STATIC_ASSERT( holds_alternative<float>( v ) );
+    }
+
+    {
+        constexpr variant<int, float, float> v;
+        STATIC_ASSERT( holds_alternative<int>( v ) );
+    }
+
+    {
+        constexpr variant<int, int, float> v( 3.14f );
+        STATIC_ASSERT( holds_alternative<float>( v ) );
+    }
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_in_place_index_construct.cpp

@@ -0,0 +1,138 @@
+
+// Copyright 2017 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/variant2/variant.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+#include <type_traits>
+#include <utility>
+#include <string>
+
+using namespace boost::variant2;
+
+struct X
+{
+    X() = default;
+    X( in_place_index_t<0> ) = delete;
+};
+
+int main()
+{
+    {
+        variant<int> v( in_place_index_t<0>{} );
+
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 0 );
+    }
+
+    {
+        variant<X> v( in_place_index_t<0>{} );
+
+        BOOST_TEST_EQ( v.index(), 0 );
+    }
+
+    {
+        variant<int> v( in_place_index_t<0>{}, 1 );
+
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 1 );
+    }
+
+    {
+        variant<int, float> v( in_place_index_t<0>{} );
+
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 0 );
+    }
+
+    {
+        variant<int, float> v( in_place_index_t<0>{}, 1 );
+
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 1 );
+    }
+
+    {
+        variant<int, float> v( in_place_index_t<1>{} );
+
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v), 0 );
+    }
+
+    {
+        variant<int, float> v( in_place_index_t<1>{}, 3.14f );
+
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v), 3.14f );
+    }
+
+    {
+        variant<int, int, float, float, std::string, std::string> v( in_place_index_t<0>{}, 1 );
+
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 1 );
+    }
+
+    {
+        variant<int, int, float, float, std::string, std::string> v( in_place_index_t<1>{}, 1 );
+
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v), 1 );
+    }
+
+    {
+        variant<int, int, float, float, std::string, std::string> v( in_place_index_t<2>{}, 3.14f );
+
+        BOOST_TEST_EQ( v.index(), 2 );
+        BOOST_TEST_EQ( get<2>(v), 3.14f );
+    }
+
+    {
+        variant<int, int, float, float, std::string, std::string> v( in_place_index_t<3>{}, 3.14f );
+
+        BOOST_TEST_EQ( v.index(), 3 );
+        BOOST_TEST_EQ( get<3>(v), 3.14f );
+    }
+
+    {
+        variant<int, int, float, float, std::string, std::string> v( in_place_index_t<4>{}, "text" );
+
+        BOOST_TEST_EQ( v.index(), 4 );
+        BOOST_TEST_EQ( get<4>(v), std::string("text") );
+    }
+
+    {
+        variant<int, int, float, float, std::string, std::string> v( in_place_index_t<5>{}, "text" );
+
+        BOOST_TEST_EQ( v.index(), 5 );
+        BOOST_TEST_EQ( get<5>(v), std::string("text") );
+    }
+
+    {
+        variant<int, int, float, float, std::string, std::string> v( in_place_index_t<5>{}, 4, 'a' );
+
+        BOOST_TEST_EQ( v.index(), 5 );
+        BOOST_TEST_EQ( get<5>(v), std::string( 4, 'a' ) );
+    }
+
+    {
+        variant<int, int, float, float, std::string, std::string> v( in_place_index_t<4>{}, { 'a', 'b', 'c' } );
+
+        BOOST_TEST_EQ( v.index(), 4 );
+        BOOST_TEST_EQ( get<4>(v), (std::string{ 'a', 'b', 'c' }) );
+    }
+
+    {
+        variant<int, int, float, float, std::string, std::string> v( in_place_index_t<5>{}, { 'a', 'b', 'c' }, std::allocator<char>() );
+
+        BOOST_TEST_EQ( v.index(), 5 );
+        BOOST_TEST_EQ( get<5>(v), (std::string{ 'a', 'b', 'c' }) );
+    }
+
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_in_place_index_construct_cx.cpp

@@ -0,0 +1,121 @@
+
+// Copyright 2017 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/variant2/variant.hpp>
+#include <boost/config.hpp>
+#include <boost/config/workaround.hpp>
+
+using namespace boost::variant2;
+
+struct X
+{
+    constexpr X() = default;
+    constexpr explicit X(int, int) {}
+    X( in_place_index_t<0> ) = delete;
+};
+
+#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
+
+int main()
+{
+    {
+        constexpr variant<int> v( in_place_index_t<0>{} );
+
+        STATIC_ASSERT( v.index() == 0 );
+        STATIC_ASSERT( get<0>(v) == 0 );
+    }
+
+    {
+        constexpr variant<X> v( in_place_index_t<0>{} );
+
+        STATIC_ASSERT( v.index() == 0 );
+    }
+
+    {
+        constexpr variant<int> v( in_place_index_t<0>{}, 1 );
+
+        STATIC_ASSERT( v.index() == 0 );
+        STATIC_ASSERT( get<0>(v) == 1 );
+    }
+
+    {
+        constexpr variant<int, float> v( in_place_index_t<0>{} );
+
+        STATIC_ASSERT( v.index() == 0 );
+        STATIC_ASSERT( get<0>(v) == 0 );
+    }
+
+    {
+        constexpr variant<int, float> v( in_place_index_t<0>{}, 1 );
+
+        STATIC_ASSERT( v.index() == 0 );
+        STATIC_ASSERT( get<0>(v) == 1 );
+    }
+
+    {
+        constexpr variant<int, float> v( in_place_index_t<1>{} );
+
+        STATIC_ASSERT( v.index() == 1 );
+        STATIC_ASSERT( get<1>(v) == 0 );
+    }
+
+    {
+        constexpr variant<int, float> v( in_place_index_t<1>{}, 3.14f );
+
+        STATIC_ASSERT( v.index() == 1 );
+        STATIC_ASSERT( get<1>(v) == 3.14f );
+    }
+
+    {
+        constexpr variant<int, int, float, float, X, X> v( in_place_index_t<0>{}, 1 );
+
+        STATIC_ASSERT( v.index() == 0 );
+        STATIC_ASSERT( get<0>(v) == 1 );
+    }
+
+    {
+        constexpr variant<int, int, float, float, X, X> v( in_place_index_t<1>{}, 1 );
+
+        STATIC_ASSERT( v.index() == 1 );
+        STATIC_ASSERT( get<1>(v) == 1 );
+    }
+
+    {
+        constexpr variant<int, int, float, float, X, X> v( in_place_index_t<2>{}, 3.14f );
+
+        STATIC_ASSERT( v.index() == 2 );
+        STATIC_ASSERT( get<2>(v) == 3.14f );
+    }
+
+    {
+        constexpr variant<int, int, float, float, X, X> v( in_place_index_t<3>{}, 3.14f );
+
+        STATIC_ASSERT( v.index() == 3 );
+        STATIC_ASSERT( get<3>(v) == 3.14f );
+    }
+
+    {
+        constexpr variant<int, int, float, float, X, X> v( in_place_index_t<4>{} );
+
+        STATIC_ASSERT( v.index() == 4 );
+    }
+
+#if BOOST_WORKAROUND(BOOST_GCC, >= 100000 && BOOST_GCC < 120000)
+
+    // no idea why this fails on g++ 10/11
+
+#else
+
+    {
+        constexpr variant<int, int, float, float, X, X> v( in_place_index_t<5>{}, 0, 0 );
+
+        STATIC_ASSERT( v.index() == 5 );
+    }
+
+#endif
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_in_place_type_construct.cpp

@@ -0,0 +1,134 @@
+
+// Copyright 2017 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/variant2/variant.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+#include <type_traits>
+#include <utility>
+#include <string>
+
+using namespace boost::variant2;
+
+struct X
+{
+    X() = default;
+    template<class T> X( in_place_type_t<T> ) = delete;
+};
+
+int main()
+{
+    {
+        variant<int> v( in_place_type_t<int>{} );
+
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 0 );
+
+        BOOST_TEST( holds_alternative<int>(v) );
+    }
+
+    {
+        variant<X> v( in_place_type_t<X>{} );
+
+        BOOST_TEST_EQ( v.index(), 0 );
+
+        BOOST_TEST( holds_alternative<X>(v) );
+    }
+
+    {
+        variant<int> v( in_place_type_t<int>{}, 1 );
+
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 1 );
+
+        BOOST_TEST( holds_alternative<int>(v) );
+    }
+
+    {
+        variant<int, float> v( in_place_type_t<int>{} );
+
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 0 );
+
+        BOOST_TEST( holds_alternative<int>(v) );
+    }
+
+    {
+        variant<int, float> v( in_place_type_t<int>{}, 1 );
+
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 1 );
+
+        BOOST_TEST( holds_alternative<int>(v) );
+    }
+
+    {
+        variant<int, float> v( in_place_type_t<float>{} );
+
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v), 0 );
+
+        BOOST_TEST( holds_alternative<float>(v) );
+    }
+
+    {
+        variant<int, float> v( in_place_type_t<float>{}, 3.14f );
+
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v), 3.14f );
+
+        BOOST_TEST( holds_alternative<float>(v) );
+    }
+
+    {
+        variant<int, int, float, std::string> v( in_place_type_t<float>{}, 3.14f );
+
+        BOOST_TEST_EQ( v.index(), 2 );
+        BOOST_TEST_EQ( get<2>(v), 3.14f );
+
+        BOOST_TEST( holds_alternative<float>(v) );
+    }
+
+    {
+        variant<int, int, float, float, std::string> v( in_place_type_t<std::string>{}, "text" );
+
+        BOOST_TEST_EQ( v.index(), 4 );
+        BOOST_TEST_EQ( get<4>(v), std::string("text") );
+
+        BOOST_TEST( holds_alternative<std::string>(v) );
+    }
+
+    {
+        variant<int, int, float, float, std::string> v( in_place_type_t<std::string>{}, 4, 'a' );
+
+        BOOST_TEST_EQ( v.index(), 4 );
+        BOOST_TEST_EQ( get<4>(v), std::string( 4, 'a' ) );
+
+        BOOST_TEST( holds_alternative<std::string>(v) );
+    }
+
+    {
+        variant<int, int, float, float, std::string> v( in_place_type_t<std::string>{}, { 'a', 'b', 'c' } );
+
+        BOOST_TEST_EQ( v.index(), 4 );
+        BOOST_TEST_EQ( get<4>(v), (std::string{ 'a', 'b', 'c' }) );
+
+        BOOST_TEST( holds_alternative<std::string>(v) );
+    }
+
+    {
+        variant<int, int, float, float, std::string> v( in_place_type_t<std::string>{}, { 'a', 'b', 'c' }, std::allocator<char>() );
+
+        BOOST_TEST_EQ( v.index(), 4 );
+        BOOST_TEST_EQ( get<4>(v), (std::string{ 'a', 'b', 'c' }) );
+
+        BOOST_TEST( holds_alternative<std::string>(v) );
+    }
+
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_in_place_type_construct_cx.cpp

@@ -0,0 +1,120 @@
+
+// Copyright 2017 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/variant2/variant.hpp>
+#include <boost/config.hpp>
+#include <boost/config/workaround.hpp>
+
+using namespace boost::variant2;
+
+struct X
+{
+    constexpr X() = default;
+    constexpr explicit X(int, int) {}
+    template<class T> X( in_place_type_t<T> ) = delete;
+};
+
+#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
+
+int main()
+{
+    {
+        constexpr variant<int> v( in_place_type_t<int>{} );
+
+        STATIC_ASSERT( v.index() == 0 );
+        STATIC_ASSERT( get<0>(v) == 0 );
+
+        STATIC_ASSERT( holds_alternative<int>(v) );
+    }
+
+    {
+        constexpr variant<X> v( in_place_type_t<X>{} );
+
+        STATIC_ASSERT( v.index() == 0 );
+
+        STATIC_ASSERT( holds_alternative<X>(v) );
+    }
+
+    {
+        constexpr variant<int> v( in_place_type_t<int>{}, 1 );
+
+        STATIC_ASSERT( v.index() == 0 );
+        STATIC_ASSERT( get<0>(v) == 1 );
+
+        STATIC_ASSERT( holds_alternative<int>(v) );
+    }
+
+    {
+        constexpr variant<int, float> v( in_place_type_t<int>{} );
+
+        STATIC_ASSERT( v.index() == 0 );
+        STATIC_ASSERT( get<0>(v) == 0 );
+
+        STATIC_ASSERT( holds_alternative<int>(v) );
+    }
+
+    {
+        constexpr variant<int, float> v( in_place_type_t<int>{}, 1 );
+
+        STATIC_ASSERT( v.index() == 0 );
+        STATIC_ASSERT( get<0>(v) == 1 );
+
+        STATIC_ASSERT( holds_alternative<int>(v) );
+    }
+
+    {
+        constexpr variant<int, float> v( in_place_type_t<float>{} );
+
+        STATIC_ASSERT( v.index() == 1 );
+        STATIC_ASSERT( get<1>(v) == 0 );
+
+        STATIC_ASSERT( holds_alternative<float>(v) );
+    }
+
+    {
+        constexpr variant<int, float> v( in_place_type_t<float>{}, 3.14f );
+
+        STATIC_ASSERT( v.index() == 1 );
+        STATIC_ASSERT( get<1>(v) == 3.14f );
+
+        STATIC_ASSERT( holds_alternative<float>(v) );
+    }
+
+    {
+        constexpr variant<int, int, float, X> v( in_place_type_t<float>{}, 3.14f );
+
+        STATIC_ASSERT( v.index() == 2 );
+        STATIC_ASSERT( get<2>(v) == 3.14f );
+
+        STATIC_ASSERT( holds_alternative<float>(v) );
+    }
+
+    {
+        constexpr variant<int, int, float, float, X> v( in_place_type_t<X>{} );
+
+        STATIC_ASSERT( v.index() == 4 );
+
+        STATIC_ASSERT( holds_alternative<X>(v) );
+    }
+
+#if BOOST_WORKAROUND(BOOST_GCC, >= 100000 && BOOST_GCC < 120000)
+
+    // no idea why this fails on g++ 10/11
+
+#else
+
+    {
+        constexpr variant<int, int, float, float, X> v( in_place_type_t<X>{}, 0, 0 );
+
+        STATIC_ASSERT( v.index() == 4 );
+
+        STATIC_ASSERT( holds_alternative<X>(v) );
+    }
+
+#endif
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_lt_gt.cpp

@@ -0,0 +1,94 @@
+
+// Copyright 2017 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/variant2/variant.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+#include <type_traits>
+#include <utility>
+#include <string>
+
+using namespace boost::variant2;
+
+struct X
+{
+};
+
+inline bool operator<( X const&, X const& ) { return false; }
+inline bool operator>( X const&, X const& ) { return false; }
+inline bool operator<=( X const&, X const& ) { return false; }
+inline bool operator>=( X const&, X const& ) { return false; }
+
+#define TEST_EQ( v1, v2 ) \
+    BOOST_TEST_NOT( v1 < v2 ); \
+    BOOST_TEST_NOT( v1 > v2 ); \
+    BOOST_TEST( v1 <= v2 ); \
+    BOOST_TEST( v1 >= v2 );
+
+#define TEST_LE( v1, v3 ) \
+    BOOST_TEST( v1 < v3 ); \
+    BOOST_TEST( v3 > v1 ); \
+    BOOST_TEST_NOT( v1 > v3 ); \
+    BOOST_TEST_NOT( v3 < v1 ); \
+    BOOST_TEST( v1 <= v3 ); \
+    BOOST_TEST( v3 >= v1 ); \
+    BOOST_TEST_NOT( v1 >= v3 ); \
+    BOOST_TEST_NOT( v3 <= v1 );
+
+int main()
+{
+    {
+        variant<int> v1, v2, v3( 1 ), v4( 1 );
+
+        TEST_EQ( v1, v2 )
+        TEST_LE( v1, v3 )
+        TEST_EQ( v3, v4 )
+    }
+
+    {
+        variant<int, float> v1, v2, v3( 1 ), v4( 1 ), v5( 3.14f ), v6( 3.14f );
+
+        TEST_EQ( v1, v2 )
+        TEST_LE( v1, v3 )
+        TEST_EQ( v3, v4 )
+        TEST_LE( v1, v5 )
+        TEST_LE( v3, v5 )
+        TEST_EQ( v5, v6 )
+    }
+
+    {
+        variant<int, int, float> v1, v2, v3( in_place_index_t<1>{} ), v4( in_place_index_t<1>{} ), v5( 3.14f ), v6( 3.14f );
+
+        TEST_EQ( v1, v2 )
+        TEST_LE( v1, v3 )
+        TEST_EQ( v3, v4 )
+        TEST_LE( v1, v5 )
+        TEST_LE( v3, v5 )
+        TEST_EQ( v5, v6 )
+    }
+
+    {
+        variant<X> v1, v2;
+
+        BOOST_TEST_NOT( v1 < v2 );
+        BOOST_TEST_NOT( v1 > v2 );
+        BOOST_TEST_NOT( v1 <= v2 );
+        BOOST_TEST_NOT( v1 >= v2 );
+    }
+
+    {
+        variant<monostate> v1, v2;
+
+        BOOST_TEST_NOT( v1 < v2 );
+        BOOST_TEST_NOT( v1 > v2 );
+        BOOST_TEST( v1 <= v2 );
+        BOOST_TEST( v1 >= v2 );
+    }
+
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_lt_gt_cx.cpp

@@ -0,0 +1,100 @@
+
+// Copyright 2017, 2019 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/variant2/variant.hpp>
+using namespace boost::variant2;
+
+#if !defined(BOOST_MP11_HAS_CXX14_CONSTEXPR)
+
+#include <boost/config/pragma_message.hpp>
+
+BOOST_PRAGMA_MESSAGE("Skipping constexpr op<, op<= test because BOOST_MP11_HAS_CXX14_CONSTEXPR is not defined")
+
+int main() {}
+
+#else
+
+struct X
+{
+};
+
+inline constexpr bool operator<( X const&, X const& ) { return false; }
+inline constexpr bool operator>( X const&, X const& ) { return false; }
+inline constexpr bool operator<=( X const&, X const& ) { return false; }
+inline constexpr bool operator>=( X const&, X const& ) { return false; }
+
+#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
+
+#define TEST_EQ( v1, v2 ) \
+    STATIC_ASSERT( !(v1 < v2) ); \
+    STATIC_ASSERT( !(v1 > v2) ); \
+    STATIC_ASSERT( v1 <= v2 ); \
+    STATIC_ASSERT( v1 >= v2 );
+
+#define TEST_LE( v1, v3 ) \
+    STATIC_ASSERT( v1 < v3 ); \
+    STATIC_ASSERT( v3 > v1 ); \
+    STATIC_ASSERT( !(v1 > v3) ); \
+    STATIC_ASSERT( !(v3 < v1) ); \
+    STATIC_ASSERT( v1 <= v3 ); \
+    STATIC_ASSERT( v3 >= v1 ); \
+    STATIC_ASSERT( !(v1 >= v3) ); \
+    STATIC_ASSERT( !(v3 <= v1) );
+
+int main()
+{
+    {
+        constexpr variant<int> v1, v2, v3( 1 ), v4( 1 );
+
+        TEST_EQ( v1, v2 )
+        TEST_LE( v1, v3 )
+        TEST_EQ( v3, v4 )
+    }
+
+    {
+        constexpr variant<int, float> v1, v2, v3( 1 ), v4( 1 ), v5( 3.14f ), v6( 3.14f );
+
+        TEST_EQ( v1, v2 )
+        TEST_LE( v1, v3 )
+        TEST_EQ( v3, v4 )
+        TEST_LE( v1, v5 )
+        TEST_LE( v3, v5 )
+        TEST_EQ( v5, v6 )
+    }
+
+    {
+        constexpr variant<int, int, float> v1, v2, v3( in_place_index_t<1>{} ), v4( in_place_index_t<1>{} ), v5( 3.14f ), v6( 3.14f );
+
+        TEST_EQ( v1, v2 )
+        TEST_LE( v1, v3 )
+        TEST_EQ( v3, v4 )
+        TEST_LE( v1, v5 )
+        TEST_LE( v3, v5 )
+        TEST_EQ( v5, v6 )
+    }
+
+    {
+        constexpr variant<X> v1, v2;
+
+        STATIC_ASSERT( !(v1 < v2) );
+        STATIC_ASSERT( !(v1 > v2) );
+        STATIC_ASSERT( !(v1 <= v2) );
+        STATIC_ASSERT( !(v1 >= v2) );
+    }
+
+    {
+        constexpr variant<monostate> v1, v2;
+
+        STATIC_ASSERT( !(v1 < v2) );
+        STATIC_ASSERT( !(v1 > v2) );
+        STATIC_ASSERT( v1 <= v2 );
+        STATIC_ASSERT( v1 >= v2 );
+    }
+}
+
+#endif

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_many_types.cpp

@@ -0,0 +1,109 @@
+
+// Copyright 2020 Peter Dimov.
+// Distributed under the Boost Software License, Version 1.0.
+// https://www.boost.org/LICENSE_1_0.txt
+
+#if defined(_MSC_VER)
+# pragma warning( disable: 4503 ) // decorated name length exceeded
+#endif
+
+#include <boost/variant2/variant.hpp>
+#include <boost/mp11.hpp>
+#include <boost/core/lightweight_test.hpp>
+
+using namespace boost::mp11;
+
+template<class I> struct X
+{
+    static int const value = I::value;
+    int v_;
+};
+
+template<class I> int const X<I>::value;
+
+template<class I> struct Y
+{
+    static int const value = I::value;
+    int v_;
+
+    Y() = default;
+    Y( Y const& ) = default;
+
+    explicit Y( int v ): v_( v ) {}
+
+    Y& operator=( Y const& ) noexcept = default;
+
+    Y& operator=( Y&& r ) noexcept
+    {
+        v_ = r.v_;
+        return *this;
+    }
+};
+
+template<class I> int const Y<I>::value;
+
+template<class I> struct Z
+{
+    static int const value = I::value;
+    int v_;
+
+    ~Z() {}
+};
+
+template<class I> int const Z<I>::value;
+
+template<class V> struct F1
+{
+    template<class T> void operator()( T ) const
+    {
+        int const i = T::value;
+
+        T t{ i * 2 };
+
+        using boost::variant2::get;
+
+        {
+            V v( t );
+
+            BOOST_TEST_EQ( v.index(), i );
+            BOOST_TEST_EQ( get<i>( v ).v_, t.v_ );
+            BOOST_TEST_EQ( get<T>( v ).v_, t.v_ );
+        }
+
+        {
+            V const v( t );
+
+            BOOST_TEST_EQ( v.index(), i );
+            BOOST_TEST_EQ( get<i>( v ).v_, t.v_ );
+            BOOST_TEST_EQ( get<T>( v ).v_, t.v_ );
+        }
+
+        {
+            V v;
+
+            v = t;
+
+            BOOST_TEST_EQ( v.index(), i );
+            BOOST_TEST_EQ( get<i>( v ).v_, t.v_ );
+            BOOST_TEST_EQ( get<T>( v ).v_, t.v_ );
+        }
+    }
+};
+
+template<class V> void test()
+{
+    mp_for_each<V>( F1<V>() );
+}
+
+int main()
+{
+    int const N = 32;
+
+    using V = mp_rename<mp_iota_c<N>, boost::variant2::variant>;
+
+    test< mp_transform<X, V> >();
+    test< mp_transform<Y, V> >();
+    test< mp_transform<Z, V> >();
+
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_move_assign.cpp

@@ -0,0 +1,194 @@
+
+// Copyright 2017 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/variant2/variant.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+#include <type_traits>
+#include <utility>
+#include <string>
+
+using namespace boost::variant2;
+
+#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
+
+struct X1
+{
+    int v;
+
+    X1(): v(0) {}
+    explicit X1(int v): v(v) {}
+    X1(X1 const& r): v(r.v) {}
+    X1(X1&& r): v(r.v) {}
+    X1& operator=( X1 const& r ) { v = r.v; return *this; }
+    X1& operator=( X1&& r ) { v = r.v; return *this; }
+};
+
+inline bool operator==( X1 const& a, X1 const& b ) { return a.v == b.v; }
+
+STATIC_ASSERT( !std::is_nothrow_default_constructible<X1>::value );
+STATIC_ASSERT( !std::is_nothrow_copy_constructible<X1>::value );
+STATIC_ASSERT( !std::is_nothrow_move_constructible<X1>::value );
+STATIC_ASSERT( !std::is_nothrow_copy_assignable<X1>::value );
+STATIC_ASSERT( !std::is_nothrow_move_assignable<X1>::value );
+
+struct X2
+{
+    int v;
+
+    X2(): v(0) {}
+    explicit X2(int v): v(v) {}
+    X2(X2 const& r): v(r.v) {}
+    X2(X2&& r): v(r.v) {}
+    X2& operator=( X2 const& r ) { v = r.v; return *this; }
+    X2& operator=( X2&& r ) { v = r.v; return *this; }
+};
+
+inline bool operator==( X2 const& a, X2 const& b ) { return a.v == b.v; }
+
+STATIC_ASSERT( !std::is_nothrow_default_constructible<X2>::value );
+STATIC_ASSERT( !std::is_nothrow_copy_constructible<X2>::value );
+STATIC_ASSERT( !std::is_nothrow_move_constructible<X2>::value );
+STATIC_ASSERT( !std::is_nothrow_copy_assignable<X2>::value );
+STATIC_ASSERT( !std::is_nothrow_move_assignable<X2>::value );
+
+struct Y
+{
+    Y& operator=( Y&& ) = delete;
+};
+
+int main()
+{
+    {
+        variant<int> v;
+        BOOST_TEST_EQ( get<0>(v), 0 );
+
+        variant<int> v2( 1 );
+
+        v = std::move(v2);
+        BOOST_TEST_EQ( get<0>(v), 1 );
+
+        variant<int> v3( 2 );
+
+        v = std::move(v3);
+        BOOST_TEST_EQ( get<0>(v), 2 );
+    }
+
+    {
+        variant<int, float> v;
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 0 );
+
+        variant<int, float> v2( 1 );
+
+        v = std::move(v2);
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 1 );
+
+        variant<int, float> v3( 3.14f );
+
+        v = std::move(v3);
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v), 3.14f );
+
+        variant<int, float> v4( 3.15f );
+
+        v = std::move(v4);
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v), 3.15f );
+    }
+
+    {
+        variant<int, int, float, std::string> v;
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 0 );
+
+        variant<int, int, float, std::string> v2( in_place_index_t<1>{}, 1 );
+
+        v = std::move(v2);
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v), 1 );
+
+        variant<int, int, float, std::string> v3( 3.14f );
+
+        v = std::move(v3);
+        BOOST_TEST_EQ( v.index(), 2 );
+        BOOST_TEST_EQ( get<2>(v), 3.14f );
+
+        variant<int, int, float, std::string> v4( 3.15f );
+
+        v = std::move(v4);
+        BOOST_TEST_EQ( v.index(), 2 );
+        BOOST_TEST_EQ( get<2>(v), 3.15f );
+
+        variant<int, int, float, std::string> v5( "s1" );
+
+        v = std::move(v5);
+        BOOST_TEST_EQ( v.index(), 3 );
+        BOOST_TEST_EQ( get<3>(v), std::string("s1") );
+
+        variant<int, int, float, std::string> v6( "s2" );
+
+        v = std::move(v6);
+        BOOST_TEST_EQ( v.index(), 3 );
+        BOOST_TEST_EQ( get<3>(v), std::string("s2") );
+    }
+
+    {
+        variant<X1, X2> v;
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v).v, 0 );
+
+        variant<X1, X2> v2( X1{1} );
+
+        v = std::move(v2);
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v).v, 1 );
+
+        variant<X1, X2> v3( in_place_index_t<1>{}, 2 );
+
+        v = std::move(v3);
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v).v, 2 );
+
+        variant<X1, X2> v4( in_place_index_t<1>{}, 3 );
+
+        v = std::move(v4);
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v).v, 3 );
+
+        variant<X1, X2> v5( in_place_index_t<0>{}, 4 );
+
+        v = std::move(v5);
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v).v, 4 );
+    }
+
+    {
+        BOOST_TEST_TRAIT_TRUE((std::is_nothrow_move_assignable<variant<int>>));
+        BOOST_TEST_TRAIT_TRUE((std::is_nothrow_move_assignable<variant<int, int>>));
+        BOOST_TEST_TRAIT_TRUE((std::is_nothrow_move_assignable<variant<int, float>>));
+        BOOST_TEST_TRAIT_TRUE((std::is_nothrow_move_assignable<variant<int, int, float, float>>));
+
+        BOOST_TEST_TRAIT_FALSE((std::is_nothrow_move_assignable<variant<X1>>));
+        BOOST_TEST_TRAIT_FALSE((std::is_nothrow_move_assignable<variant<X1, int>>));
+        BOOST_TEST_TRAIT_FALSE((std::is_nothrow_move_assignable<variant<X1, int, float>>));
+
+        BOOST_TEST_TRAIT_FALSE((std::is_nothrow_move_assignable<variant<int, X1>>));
+        BOOST_TEST_TRAIT_FALSE((std::is_nothrow_move_assignable<variant<int, int, X1>>));
+
+        BOOST_TEST_TRAIT_FALSE((std::is_nothrow_move_assignable<variant<X1, X2>>));
+        BOOST_TEST_TRAIT_FALSE((std::is_nothrow_move_assignable<variant<X1, X2, int, int>>));
+
+        BOOST_TEST_TRAIT_TRUE((std::is_move_assignable<variant<X1, X2>>));
+        BOOST_TEST_TRAIT_FALSE((std::is_move_assignable<variant<int const>>));
+        BOOST_TEST_TRAIT_FALSE((std::is_move_assignable<variant<int, float, Y>>));
+    }
+
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_move_assign_cx.cpp

@@ -0,0 +1,107 @@
+
+// Copyright 2017 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/variant2/variant.hpp>
+#include <utility>
+
+using namespace boost::variant2;
+
+struct X
+{
+    int v;
+    X() = default;
+    constexpr X( int v ): v( v ) {}
+    constexpr operator int() const { return v; }
+};
+
+struct Y
+{
+    int v;
+    constexpr Y(): v() {}
+    constexpr Y( int v ): v( v ) {}
+    constexpr operator int() const { return v; }
+};
+
+enum E
+{
+    v
+};
+
+#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
+
+template<class V, class T, class A> constexpr T test( A&& a )
+{
+    V v;
+
+    v = std::forward<A>(a);
+
+    return get<T>(v);
+}
+
+int main()
+{
+    {
+        constexpr auto w = test<variant<int>, int>( variant<int>( 1 ) );
+        STATIC_ASSERT( w == 1 );
+    }
+
+    {
+        constexpr auto w = test<variant<X>, X>( variant<X>( 1 ) );
+        STATIC_ASSERT( w == 1 );
+    }
+
+#if defined( BOOST_LIBSTDCXX_VERSION ) && BOOST_LIBSTDCXX_VERSION < 50000
+#else
+
+    {
+        constexpr auto w = test<variant<Y>, Y>( variant<Y>( 1 ) );
+        STATIC_ASSERT( w == 1 );
+    }
+
+#endif
+
+    {
+        constexpr auto w = test<variant<int, float>, int>( variant<int, float>( 1 ) );
+        STATIC_ASSERT( w == 1 );
+    }
+
+    {
+        constexpr auto w = test<variant<int, float>, float>( variant<int, float>( 3.0f ) );
+        STATIC_ASSERT( w == 3.0f );
+    }
+
+    {
+        constexpr auto w = test<variant<int, int, float>, float>( variant<int, int, float>( 3.0f ) );
+        STATIC_ASSERT( w == 3.0f );
+    }
+
+    {
+        constexpr auto w = test<variant<E, E, X>, X>( variant<E, E, X>( 1 ) );
+        STATIC_ASSERT( w == 1 );
+    }
+
+    {
+        constexpr auto w = test<variant<int, int, float, float, X>, X>( variant<int, int, float, float, X>( X(1) ) );
+        STATIC_ASSERT( w == 1 );
+    }
+
+#if defined( BOOST_LIBSTDCXX_VERSION ) && BOOST_LIBSTDCXX_VERSION < 50000
+#else
+
+    {
+        constexpr auto w = test<variant<E, E, Y>, Y>( variant<E, E, Y>( 1 ) );
+        STATIC_ASSERT( w == 1 );
+    }
+
+    {
+        constexpr auto w = test<variant<int, int, float, float, Y>, Y>( variant<int, int, float, float, Y>( Y(1) ) );
+        STATIC_ASSERT( w == 1 );
+    }
+
+#endif
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_move_assign_throw.cpp

@@ -0,0 +1,55 @@
+
+// Copyright 2019 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
+
+#if defined(_MSC_VER)
+# pragma warning( disable: 4702 ) // unreachable code
+#endif
+
+#include <boost/variant2/variant.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <stdexcept>
+
+using namespace boost::variant2;
+
+struct Y1
+{
+    Y1() noexcept {} // =default fails on msvc-14.0
+
+    Y1(Y1&&)
+    {
+        throw std::runtime_error( "Y1(Y1&&)" );
+    }
+
+    Y1& operator=(Y1&&) = default;
+};
+
+struct Y2
+{
+    Y2() noexcept {}
+
+    Y2(Y2&&)
+    {
+        throw std::runtime_error( "Y2(Y2&&)" );
+    }
+
+    Y2& operator=(Y2&&) = default;
+};
+
+void test()
+{
+    variant<Y1, Y2> v1( in_place_type_t<Y1>{} );
+    variant<Y1, Y2> v2( in_place_type_t<Y2>{} );
+
+    BOOST_TEST_THROWS( v1 = std::move( v2 ), std::runtime_error )
+}
+
+int main()
+{
+    test();
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_move_construct.cpp

@@ -0,0 +1,146 @@
+
+// Copyright 2017 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/variant2/variant.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+#include <type_traits>
+#include <utility>
+#include <string>
+
+using namespace boost::variant2;
+
+#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
+
+struct X1
+{
+    X1() {}
+    X1(X1 const&) {}
+    X1(X1&&) {}
+};
+
+inline bool operator==( X1, X1 ) { return true; }
+
+STATIC_ASSERT( !std::is_nothrow_default_constructible<X1>::value );
+STATIC_ASSERT( !std::is_nothrow_copy_constructible<X1>::value );
+STATIC_ASSERT( !std::is_nothrow_move_constructible<X1>::value );
+
+struct X2
+{
+    X2() {}
+    X2(X2 const&) {}
+    X2(X2&&) {}
+};
+
+inline bool operator==( X2, X2 ) { return true; }
+
+STATIC_ASSERT( !std::is_nothrow_default_constructible<X2>::value );
+STATIC_ASSERT( !std::is_nothrow_copy_constructible<X2>::value );
+STATIC_ASSERT( !std::is_nothrow_move_constructible<X2>::value );
+
+struct Y
+{
+    Y( Y&& ) = delete;
+};
+
+template<class V> static void test( V&& v )
+{
+    V v2( v );
+    V v3( std::move(v) );
+
+    BOOST_TEST_EQ( v2.index(), v3.index() );
+    BOOST_TEST( v2 == v3 );
+}
+
+int main()
+{
+    test( variant<int>() );
+    test( variant<int>(1) );
+
+    test( variant<int const>() );
+    test( variant<int const>(1) );
+
+    test( variant<int, float>() );
+    test( variant<int, float>(1) );
+    test( variant<int, float>(3.14f) );
+
+    test( variant<int const, float const>() );
+    test( variant<int const, float const>(1) );
+    test( variant<int const, float const>(3.14f) );
+
+    test( variant<std::string>() );
+    test( variant<std::string>("test") );
+
+    test( variant<std::string const>() );
+    test( variant<std::string const>("test") );
+
+    test( variant<int, float, std::string>() );
+    test( variant<int, float, std::string>(1) );
+    test( variant<int, float, std::string>(3.14f) );
+    test( variant<int, float, std::string>("test") );
+
+    test( variant<int, int>() );
+
+    test( variant<int, int, float>() );
+    test( variant<int, int, float>(3.14f) );
+
+    test( variant<int, int, float, float>() );
+
+    test( variant<int, int, float, float, std::string>("test") );
+
+    test( variant<std::string, std::string, float>() );
+
+    test( variant<X1 const>() );
+
+    test( variant<X1, X2>() );
+    test( variant<X1, X2, int>() );
+    test( variant<X1, X2, X2>() );
+    test( variant<X1, X1, X2, X2>() );
+
+    {
+        variant<X1, X2> v;
+        v.emplace<X2>();
+
+        test( std::move(v) );
+    }
+
+    {
+        variant<X1, X1, X2> v;
+        v.emplace<X2>();
+
+        test( std::move(v) );
+    }
+
+    {
+        BOOST_TEST_TRAIT_TRUE((std::is_nothrow_move_constructible<variant<int>>));
+        BOOST_TEST_TRAIT_TRUE((std::is_nothrow_move_constructible<variant<int const>>));
+        BOOST_TEST_TRAIT_TRUE((std::is_nothrow_move_constructible<variant<int, int>>));
+        BOOST_TEST_TRAIT_TRUE((std::is_nothrow_move_constructible<variant<int, float>>));
+        BOOST_TEST_TRAIT_TRUE((std::is_nothrow_move_constructible<variant<int, int, float, float>>));
+
+        BOOST_TEST_TRAIT_FALSE((std::is_nothrow_move_constructible<variant<X1>>));
+        BOOST_TEST_TRAIT_FALSE((std::is_nothrow_move_constructible<variant<X1, int>>));
+        BOOST_TEST_TRAIT_FALSE((std::is_nothrow_move_constructible<variant<X1, int, float>>));
+
+        BOOST_TEST_TRAIT_FALSE((std::is_nothrow_move_constructible<variant<int, X1>>));
+        BOOST_TEST_TRAIT_FALSE((std::is_nothrow_move_constructible<variant<int, int, X1>>));
+
+        BOOST_TEST_TRAIT_FALSE((std::is_nothrow_move_constructible<variant<X1, X2>>));
+        BOOST_TEST_TRAIT_FALSE((std::is_nothrow_move_constructible<variant<X1, X2, int, int>>));
+
+        BOOST_TEST_TRAIT_TRUE((std::is_move_constructible<variant<X1, X2>>));
+
+#if !BOOST_WORKAROUND( BOOST_MSVC, <= 1910 )
+
+        BOOST_TEST_TRAIT_FALSE((std::is_move_constructible<variant<int, float, Y>>));
+
+#endif
+    }
+
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_move_construct_cx.cpp

@@ -0,0 +1,104 @@
+
+// Copyright 2017 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/variant2/variant.hpp>
+#include <utility>
+
+using namespace boost::variant2;
+
+struct X
+{
+    int v;
+    X() = default;
+    constexpr X( int v ): v( v ) {}
+    constexpr operator int() const { return v; }
+};
+
+struct Y
+{
+    int v;
+    constexpr Y(): v() {}
+    constexpr Y( int v ): v( v ) {}
+    constexpr operator int() const { return v; }
+};
+
+enum E
+{
+    v
+};
+
+#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
+
+template<class T, class V> constexpr T test( V&& v )
+{
+    V v2( std::forward<V>(v) );
+    return get<T>( v2 );
+}
+
+int main()
+{
+    {
+        constexpr auto w = test<int>( variant<int>( 1 ) );
+        STATIC_ASSERT( w == 1 );
+    }
+
+    {
+        constexpr auto w = test<X>( variant<X>( 1 ) );
+        STATIC_ASSERT( w == 1 );
+    }
+
+#if defined( BOOST_LIBSTDCXX_VERSION ) && BOOST_LIBSTDCXX_VERSION < 50000
+#else
+
+    {
+        constexpr auto w = test<Y>( variant<Y>( 1 ) );
+        STATIC_ASSERT( w == 1 );
+    }
+
+#endif
+
+    {
+        constexpr auto w = test<int>( variant<int, float>( 1 ) );
+        STATIC_ASSERT( w == 1 );
+    }
+
+    {
+        constexpr auto w = test<float>( variant<int, float>( 3.0f ) );
+        STATIC_ASSERT( w == 3.0f );
+    }
+
+    {
+        constexpr auto w = test<float>( variant<int, int, float>( 3.0f ) );
+        STATIC_ASSERT( w == 3.0f );
+    }
+
+    {
+        constexpr auto w = test<X>( variant<E, E, X>( 1 ) );
+        STATIC_ASSERT( w == 1 );
+    }
+
+    {
+        constexpr auto w = test<X>( variant<int, int, float, float, X>( X(1) ) );
+        STATIC_ASSERT( w == 1 );
+    }
+
+#if defined( BOOST_LIBSTDCXX_VERSION ) && BOOST_LIBSTDCXX_VERSION < 50000
+#else
+
+    {
+        constexpr auto w = test<Y>( variant<E, E, Y>( 1 ) );
+        STATIC_ASSERT( w == 1 );
+    }
+
+    {
+        constexpr auto w = test<Y>( variant<int, int, float, float, Y>( Y(1) ) );
+        STATIC_ASSERT( w == 1 );
+    }
+
+#endif
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_move_construct_throw.cpp

@@ -0,0 +1,69 @@
+
+// Copyright 2019 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
+
+#if defined(_MSC_VER)
+# pragma warning( disable: 4702 ) // unreachable code
+#endif
+
+#include <boost/variant2/variant.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <stdexcept>
+
+using namespace boost::variant2;
+
+struct X
+{
+    static int instances;
+
+    X()
+    {
+        ++instances;
+    }
+
+    X( X const& )
+    {
+        throw std::runtime_error( "X(X const&)" );
+    }
+
+    ~X()
+    {
+        --instances;
+    }
+};
+
+int X::instances = 0;
+
+void test()
+{
+    X::instances = 0;
+
+    {
+        variant<X> v1;
+
+        BOOST_TEST_EQ( X::instances, 1 );
+
+        try
+        {
+            variant<X> v2( std::move( v1 ) );
+            BOOST_TEST_EQ( X::instances, 2 );
+        }
+        catch( std::exception const& )
+        {
+        }
+
+        BOOST_TEST_EQ( X::instances, 1 );
+    }
+
+    BOOST_TEST_EQ( X::instances, 0 );
+}
+
+int main()
+{
+    test();
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_ostream_insert.cpp

@@ -0,0 +1,43 @@
+// Copyright 2021 Peter Dimov
+// Distributed under the Boost Software License, Version 1.0.
+// https://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/variant2/variant.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <sstream>
+#include <string>
+
+using namespace boost::variant2;
+
+template<class T> std::string to_string( T const& t )
+{
+    std::ostringstream os;
+
+    os << t;
+
+    return os.str();
+}
+
+int main()
+{
+    {
+        BOOST_TEST_EQ( to_string( monostate() ), "monostate" );
+    }
+
+    {
+        variant<monostate, int, float, std::string> v;
+
+        BOOST_TEST_EQ( to_string( v ), to_string( monostate() ) );
+
+        v = 1;
+        BOOST_TEST_EQ( to_string( v ), to_string( 1 ) );
+
+        v = 3.14f;
+        BOOST_TEST_EQ( to_string( v ), to_string( 3.14f ) );
+
+        v = "test";
+        BOOST_TEST_EQ( to_string( v ), to_string( "test" ) );
+    }
+
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_size.cpp

@@ -0,0 +1,104 @@
+
+// Copyright 2017 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/variant2/variant.hpp>
+#include <boost/mp11.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+#include <type_traits>
+#include <cstddef>
+
+using namespace boost::variant2;
+using namespace boost::mp11;
+
+template<class T> using var_size_t = mp_size_t<variant_size<T>::value>;
+
+int main()
+{
+    BOOST_TEST_EQ( (variant_size<variant<>>::value), 0 );
+    BOOST_TEST_EQ( (variant_size<variant<> const>::value), 0 );
+    BOOST_TEST_EQ( (variant_size<variant<> volatile>::value), 0 );
+    BOOST_TEST_EQ( (variant_size<variant<> const volatile>::value), 0 );
+
+    BOOST_TEST_EQ( (variant_size<variant<>&>::value), 0 );
+    BOOST_TEST_EQ( (variant_size<variant<> const&>::value), 0 );
+    BOOST_TEST_EQ( (variant_size<variant<>&&>::value), 0 );
+    BOOST_TEST_EQ( (variant_size<variant<> const&&>::value), 0 );
+
+    BOOST_TEST_EQ( (variant_size<variant<void>>::value), 1 );
+    BOOST_TEST_EQ( (variant_size<variant<void> const>::value), 1 );
+    BOOST_TEST_EQ( (variant_size<variant<void> volatile>::value), 1 );
+    BOOST_TEST_EQ( (variant_size<variant<void> const volatile>::value), 1 );
+
+    BOOST_TEST_EQ( (variant_size<variant<void>&>::value), 1 );
+    BOOST_TEST_EQ( (variant_size<variant<void> const&>::value), 1 );
+    BOOST_TEST_EQ( (variant_size<variant<void>&&>::value), 1 );
+    BOOST_TEST_EQ( (variant_size<variant<void> const&&>::value), 1 );
+
+    BOOST_TEST_EQ( (variant_size<variant<void, void>>::value), 2 );
+    BOOST_TEST_EQ( (variant_size<variant<void, void> const>::value), 2 );
+    BOOST_TEST_EQ( (variant_size<variant<void, void> volatile>::value), 2 );
+    BOOST_TEST_EQ( (variant_size<variant<void, void> const volatile>::value), 2 );
+
+    BOOST_TEST_EQ( (variant_size<variant<void, void>&>::value), 2 );
+    BOOST_TEST_EQ( (variant_size<variant<void, void> const&>::value), 2 );
+    BOOST_TEST_EQ( (variant_size<variant<void, void>&&>::value), 2 );
+    BOOST_TEST_EQ( (variant_size<variant<void, void> const&&>::value), 2 );
+
+    BOOST_TEST_EQ( (variant_size<variant<void, void, void>>::value), 3 );
+    BOOST_TEST_EQ( (variant_size<variant<void, void, void> const>::value), 3 );
+    BOOST_TEST_EQ( (variant_size<variant<void, void, void> volatile>::value), 3 );
+    BOOST_TEST_EQ( (variant_size<variant<void, void, void> const volatile>::value), 3 );
+
+    BOOST_TEST_EQ( (variant_size<variant<void, void, void>&>::value), 3 );
+    BOOST_TEST_EQ( (variant_size<variant<void, void, void> const&>::value), 3 );
+    BOOST_TEST_EQ( (variant_size<variant<void, void, void>&&>::value), 3 );
+    BOOST_TEST_EQ( (variant_size<variant<void, void, void> const&&>::value), 3 );
+
+    BOOST_TEST_EQ( (variant_size<variant<void, void, void, void>>::value), 4 );
+    BOOST_TEST_EQ( (variant_size<variant<void, void, void, void> const>::value), 4 );
+    BOOST_TEST_EQ( (variant_size<variant<void, void, void, void> volatile>::value), 4 );
+    BOOST_TEST_EQ( (variant_size<variant<void, void, void, void> const volatile>::value), 4 );
+
+    BOOST_TEST_EQ( (variant_size<variant<void, void, void, void>&>::value), 4 );
+    BOOST_TEST_EQ( (variant_size<variant<void, void, void, void> const&>::value), 4 );
+    BOOST_TEST_EQ( (variant_size<variant<void, void, void, void>&&>::value), 4 );
+    BOOST_TEST_EQ( (variant_size<variant<void, void, void, void> const&&>::value), 4 );
+
+    variant_size<void>();
+    variant_size<void const>();
+    variant_size<void volatile>();
+    variant_size<void const volatile>();
+
+    variant_size<int&>();
+    variant_size<int const&>();
+    variant_size<int&&>();
+    variant_size<int const&&>();
+
+    BOOST_TEST_TRAIT_FALSE((mp_valid<var_size_t, void>));
+    BOOST_TEST_TRAIT_FALSE((mp_valid<var_size_t, void const>));
+    BOOST_TEST_TRAIT_FALSE((mp_valid<var_size_t, void volatile>));
+    BOOST_TEST_TRAIT_FALSE((mp_valid<var_size_t, void const volatile>));
+
+    BOOST_TEST_TRAIT_FALSE((mp_valid<var_size_t, int&>));
+    BOOST_TEST_TRAIT_FALSE((mp_valid<var_size_t, int const&>));
+    BOOST_TEST_TRAIT_FALSE((mp_valid<var_size_t, int&&>));
+    BOOST_TEST_TRAIT_FALSE((mp_valid<var_size_t, int const&&>));
+
+    BOOST_TEST_TRAIT_TRUE((mp_valid<var_size_t, variant<>>));
+    BOOST_TEST_TRAIT_TRUE((mp_valid<var_size_t, variant<> const>));
+    BOOST_TEST_TRAIT_TRUE((mp_valid<var_size_t, variant<> volatile>));
+    BOOST_TEST_TRAIT_TRUE((mp_valid<var_size_t, variant<> const volatile>));
+
+    BOOST_TEST_TRAIT_TRUE((mp_valid<var_size_t, variant<>&>));
+    BOOST_TEST_TRAIT_TRUE((mp_valid<var_size_t, variant<> const&>));
+    BOOST_TEST_TRAIT_TRUE((mp_valid<var_size_t, variant<>&&>));
+    BOOST_TEST_TRAIT_TRUE((mp_valid<var_size_t, variant<> const&&>));
+
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_special.cpp

@@ -0,0 +1,103 @@
+// Copyright 2020 Peter Dimov.
+// Distributed under the Boost Software License, Version 1.0.
+// https://www.boost.org/LICENSE_1_0.txt
+
+#if defined(_MSC_VER) && _MSC_VER < 1910
+# pragma warning(disable: 4503) // decorated name length exceeded
+#endif
+
+#include <boost/variant2/variant.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+#include <boost/config.hpp>
+#include <boost/config/workaround.hpp>
+
+#include <boost/mp11.hpp>
+using namespace boost::mp11;
+
+//
+
+using namespace boost::variant2;
+
+struct D
+{
+    ~D() noexcept {}
+};
+
+struct CC1
+{
+    CC1( CC1 const& ) {}
+};
+
+struct CC2
+{
+    CC2( CC2 const& ) = delete;
+};
+
+struct MC1
+{
+    MC1( MC1 && ) {}
+};
+
+struct MC2
+{
+    MC2( MC2 && ) = delete;
+};
+
+struct CA1
+{
+    CA1& operator=( CA1 const& ) { return *this; }
+};
+
+struct CA2
+{
+    CA2& operator=( CA2 const& ) = delete;
+};
+
+struct MA1
+{
+    MA1& operator=( MA1 && ) { return *this; }
+};
+
+struct MA2
+{
+    MA2& operator=( MA2 && ) = delete;
+};
+
+struct test
+{
+    template<class... T> void operator()( mp_list<T...> ) const noexcept
+    {
+        using U = mp_inherit<T...>;
+
+#if !BOOST_WORKAROUND( __GNUC__, < 5 )
+
+        BOOST_TEST_EQ( std::is_copy_constructible<variant<U>>::value, std::is_copy_constructible<U>::value );
+        BOOST_TEST_EQ( std::is_nothrow_copy_constructible<variant<U>>::value, std::is_nothrow_copy_constructible<U>::value );
+
+#endif
+
+#if !BOOST_WORKAROUND(BOOST_MSVC, < 1910)
+
+        BOOST_TEST_EQ( std::is_move_constructible<variant<U>>::value, std::is_move_constructible<U>::value );
+
+#else
+
+        BOOST_TEST_GE( std::is_move_constructible<variant<U>>::value, std::is_move_constructible<U>::value );
+
+#endif
+
+        BOOST_TEST_EQ( std::is_nothrow_move_constructible<variant<U>>::value, std::is_nothrow_move_constructible<U>::value );
+
+        BOOST_TEST_EQ( std::is_copy_assignable<variant<U>>::value, std::is_copy_constructible<U>::value && std::is_copy_assignable<U>::value );
+        BOOST_TEST_EQ( std::is_nothrow_copy_assignable<variant<U>>::value, std::is_nothrow_copy_constructible<U>::value && std::is_copy_assignable<U>::value );
+
+        BOOST_TEST_EQ( std::is_move_assignable<variant<U>>::value, std::is_move_constructible<U>::value && std::is_move_assignable<U>::value );
+        BOOST_TEST_EQ( std::is_nothrow_move_assignable<variant<U>>::value, std::is_nothrow_move_constructible<U>::value && std::is_move_assignable<U>::value );
+    }
+};
+
+int main()
+{
+    mp_for_each< mp_power_set< mp_list<D, CC1, CC2, MC1, MC2, CA1, CA2, MA1, MA2> > >( test() );
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_subset.cpp

@@ -0,0 +1,159 @@
+
+// Copyright 2017 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
+
+#if defined(_MSC_VER)
+# pragma warning( disable: 4702 ) // unreachable code
+#endif
+
+#include <boost/variant2/variant.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+#include <type_traits>
+#include <utility>
+#include <string>
+
+using namespace boost::variant2;
+
+#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
+
+struct X1
+{
+    int v;
+
+    X1(): v(0) {}
+    explicit X1(int v): v(v) {}
+    X1(X1 const& r): v(r.v) {}
+    X1(X1&& r): v(r.v) {}
+    X1& operator=( X1 const& r ) { v = r.v; return *this; }
+    X1& operator=( X1&& r ) { v = r.v; return *this; }
+};
+
+inline bool operator==( X1 const& a, X1 const& b ) { return a.v == b.v; }
+
+STATIC_ASSERT( !std::is_nothrow_default_constructible<X1>::value );
+STATIC_ASSERT( !std::is_nothrow_copy_constructible<X1>::value );
+STATIC_ASSERT( !std::is_nothrow_move_constructible<X1>::value );
+STATIC_ASSERT( !std::is_nothrow_copy_assignable<X1>::value );
+STATIC_ASSERT( !std::is_nothrow_move_assignable<X1>::value );
+
+struct X2
+{
+    int v;
+
+    X2(): v(0) {}
+    explicit X2(int v): v(v) {}
+    X2(X2 const& r): v(r.v) {}
+    X2(X2&& r): v(r.v) {}
+    X2& operator=( X2 const& r ) { v = r.v; return *this; }
+    X2& operator=( X2&& r ) { v = r.v; return *this; }
+};
+
+inline bool operator==( X2 const& a, X2 const& b ) { return a.v == b.v; }
+
+STATIC_ASSERT( !std::is_nothrow_default_constructible<X2>::value );
+STATIC_ASSERT( !std::is_nothrow_copy_constructible<X2>::value );
+STATIC_ASSERT( !std::is_nothrow_move_constructible<X2>::value );
+STATIC_ASSERT( !std::is_nothrow_copy_assignable<X2>::value );
+STATIC_ASSERT( !std::is_nothrow_move_assignable<X2>::value );
+
+int main()
+{
+    {
+        variant<int, float> v1( 1 );
+
+        variant<int> v2 = v1.subset<int>();
+
+        BOOST_TEST( holds_alternative<int>( v2 ) );
+        BOOST_TEST_EQ( get<int>( v1 ), get<int>( v2 ) );
+
+        BOOST_TEST_THROWS( v1.subset<float>(), bad_variant_access );
+
+        variant<int> v3 = std::move(v1).subset<int>();
+
+        BOOST_TEST( holds_alternative<int>( v3 ) );
+        BOOST_TEST_EQ( get<int>( v2 ), get<int>( v3 ) );
+
+        BOOST_TEST_THROWS( std::move(v1).subset<float>(), bad_variant_access );
+    }
+
+    {
+        variant<int, float> const v1( 1 );
+
+        variant<int> v2 = v1.subset<int>();
+
+        BOOST_TEST( holds_alternative<int>( v2 ) );
+        BOOST_TEST_EQ( get<int>( v1 ), get<int>( v2 ) );
+
+        BOOST_TEST_THROWS( v1.subset<float>(), bad_variant_access );
+
+        variant<int> v3 = std::move(v1).subset<int>();
+
+        BOOST_TEST( holds_alternative<int>( v3 ) );
+        BOOST_TEST_EQ( get<int>( v2 ), get<int>( v3 ) );
+
+        BOOST_TEST_THROWS( std::move(v1).subset<float>(), bad_variant_access );
+    }
+
+    {
+        variant<int, float> v1( 1 );
+
+        variant<int, float> v2 = v1.subset<int, float>();
+
+        BOOST_TEST( holds_alternative<int>( v2 ) );
+        BOOST_TEST_EQ( get<int>( v1 ), get<int>( v2 ) );
+
+        variant<int, float> v3 = std::move(v1).subset<int, float>();
+
+        BOOST_TEST( holds_alternative<int>( v3 ) );
+        BOOST_TEST_EQ( get<int>( v2 ), get<int>( v3 ) );
+    }
+
+    {
+        variant<int, float> v1( 1 );
+
+        variant<float, int> v2 = v1.subset<float, int>();
+
+        BOOST_TEST( holds_alternative<int>( v2 ) );
+        BOOST_TEST_EQ( get<int>( v1 ), get<int>( v2 ) );
+
+        variant<float, int> v3 = std::move(v1).subset<float, int>();
+
+        BOOST_TEST( holds_alternative<int>( v3 ) );
+        BOOST_TEST_EQ( get<int>( v2 ), get<int>( v3 ) );
+    }
+
+    {
+        variant<int, float, std::string> v1( "s1" );
+
+        variant<int, std::string> v2 = v1.subset<int, std::string>();
+
+        BOOST_TEST( holds_alternative<std::string>( v2 ) );
+        BOOST_TEST_EQ( get<std::string>( v1 ), get<std::string>( v2 ) );
+
+        variant<float, std::string> v3 = std::move(v1).subset<float, std::string>();
+
+        BOOST_TEST( holds_alternative<std::string>( v3 ) );
+        BOOST_TEST_EQ( get<std::string>( v2 ), get<std::string>( v3 ) );
+    }
+
+    {
+        variant<int, int, float, float, X1, X2> v1{ X1{1} };
+
+        variant<X1, X2> v2 = v1.subset<X1, X2>();
+
+        BOOST_TEST( holds_alternative<X1>( v2 ) );
+        BOOST_TEST_EQ( get<X1>( v1 ).v, get<X1>( v2 ).v );
+
+        variant<X1, X2> v3 = std::move( v1 ).subset<X1, X2>();
+
+        BOOST_TEST( holds_alternative<X1>( v3 ) );
+        BOOST_TEST_EQ( get<X1>( v2 ).v, get<X1>( v3 ).v );
+    }
+
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_swap.cpp

@@ -0,0 +1,259 @@
+
+// Copyright 2017 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/variant2/variant.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+#include <type_traits>
+#include <utility>
+#include <string>
+
+using namespace boost::variant2;
+
+#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
+
+struct X1
+{
+    int v;
+
+    X1(): v(0) {}
+    explicit X1(int v): v(v) {}
+    X1(X1 const& r): v(r.v) {}
+    X1(X1&& r): v(r.v) {}
+    X1& operator=( X1 const& r ) { v = r.v; return *this; }
+    X1& operator=( X1&& r ) { v = r.v; return *this; }
+};
+
+inline bool operator==( X1 const& a, X1 const& b ) { return a.v == b.v; }
+
+STATIC_ASSERT( !std::is_nothrow_default_constructible<X1>::value );
+STATIC_ASSERT( !std::is_nothrow_copy_constructible<X1>::value );
+STATIC_ASSERT( !std::is_nothrow_move_constructible<X1>::value );
+STATIC_ASSERT( !std::is_nothrow_copy_assignable<X1>::value );
+STATIC_ASSERT( !std::is_nothrow_move_assignable<X1>::value );
+
+struct X2
+{
+    int v;
+
+    X2(): v(0) {}
+    explicit X2(int v): v(v) {}
+    X2(X2 const& r): v(r.v) {}
+    X2(X2&& r): v(r.v) {}
+    X2& operator=( X2 const& r ) { v = r.v; return *this; }
+    X2& operator=( X2&& r ) { v = r.v; return *this; }
+};
+
+inline bool operator==( X2 const& a, X2 const& b ) { return a.v == b.v; }
+
+STATIC_ASSERT( !std::is_nothrow_default_constructible<X2>::value );
+STATIC_ASSERT( !std::is_nothrow_copy_constructible<X2>::value );
+STATIC_ASSERT( !std::is_nothrow_move_constructible<X2>::value );
+STATIC_ASSERT( !std::is_nothrow_copy_assignable<X2>::value );
+STATIC_ASSERT( !std::is_nothrow_move_assignable<X2>::value );
+
+int main()
+{
+    {
+        variant<int> v;
+        BOOST_TEST_EQ( get<0>(v), 0 );
+
+        variant<int> v2( 1 );
+        BOOST_TEST_EQ( get<0>(v2), 1 );
+
+        swap( v, v2 );
+        BOOST_TEST_EQ( get<0>(v), 1 );
+        BOOST_TEST_EQ( get<0>(v2), 0 );
+
+        variant<int> v3( 2 );
+        BOOST_TEST_EQ( get<0>(v3), 2 );
+
+        swap( v, v3 );
+        BOOST_TEST_EQ( get<0>(v), 2 );
+        BOOST_TEST_EQ( get<0>(v3), 1 );
+    }
+
+    {
+        variant<int, float> v;
+
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 0 );
+
+        variant<int, float> v2( 1 );
+
+        BOOST_TEST_EQ( v2.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v2), 1 );
+
+        swap( v, v2 );
+
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 1 );
+
+        BOOST_TEST_EQ( v2.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v2), 0 );
+
+        variant<int, float> v3( 3.14f );
+
+        BOOST_TEST_EQ( v3.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v3), 3.14f );
+
+        swap( v, v3 );
+
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v), 3.14f );
+
+        BOOST_TEST_EQ( v3.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v3), 1 );
+
+        variant<int, float> v4( 3.15f );
+
+        BOOST_TEST_EQ( v4.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v4), 3.15f );
+
+        swap( v, v4 );
+
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v), 3.15f );
+
+        BOOST_TEST_EQ( v4.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v4), 3.14f );
+    }
+
+    {
+        variant<int, int, float, std::string> v;
+
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 0 );
+
+        variant<int, int, float, std::string> v2( in_place_index_t<1>{}, 1 );
+
+        BOOST_TEST_EQ( v2.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v2), 1 );
+
+        swap( v, v2 );
+
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v), 1 );
+
+        BOOST_TEST_EQ( v2.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v2), 0 );
+
+        variant<int, int, float, std::string> v3( 3.14f );
+
+        BOOST_TEST_EQ( v3.index(), 2 );
+        BOOST_TEST_EQ( get<2>(v3), 3.14f );
+
+        swap( v, v3 );
+
+        BOOST_TEST_EQ( v.index(), 2 );
+        BOOST_TEST_EQ( get<2>(v), 3.14f );
+
+        BOOST_TEST_EQ( v3.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v3), 1 );
+
+        variant<int, int, float, std::string> v4( 3.15f );
+
+        BOOST_TEST_EQ( v4.index(), 2 );
+        BOOST_TEST_EQ( get<2>(v4), 3.15f );
+
+        swap( v, v4 );
+
+        BOOST_TEST_EQ( v.index(), 2 );
+        BOOST_TEST_EQ( get<2>(v), 3.15f );
+
+        BOOST_TEST_EQ( v4.index(), 2 );
+        BOOST_TEST_EQ( get<2>(v4), 3.14f );
+
+        variant<int, int, float, std::string> v5( "s1" );
+
+        BOOST_TEST_EQ( v5.index(), 3 );
+        BOOST_TEST_EQ( get<3>(v5), std::string("s1") );
+
+        swap( v, v5 );
+
+        BOOST_TEST_EQ( v.index(), 3 );
+        BOOST_TEST_EQ( get<3>(v), std::string("s1") );
+
+        BOOST_TEST_EQ( v5.index(), 2 );
+        BOOST_TEST_EQ( get<2>(v5), 3.15f );
+
+        variant<int, int, float, std::string> v6( "s2" );
+
+        BOOST_TEST_EQ( v6.index(), 3 );
+        BOOST_TEST_EQ( get<3>(v6), std::string("s2") );
+
+        swap( v, v6 );
+
+        BOOST_TEST_EQ( v.index(), 3 );
+        BOOST_TEST_EQ( get<3>(v), std::string("s2") );
+
+        BOOST_TEST_EQ( v6.index(), 3 );
+        BOOST_TEST_EQ( get<3>(v6), std::string("s1") );
+    }
+
+    {
+        variant<X1, X2> v;
+
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v).v, 0 );
+
+        variant<X1, X2> v2( X1{1} );
+
+        BOOST_TEST_EQ( v2.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v2).v, 1 );
+
+        swap( v, v2 );
+
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v).v, 1 );
+
+        BOOST_TEST_EQ( v2.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v2).v, 0 );
+
+        variant<X1, X2> v3( in_place_index_t<1>{}, 2 );
+
+        BOOST_TEST_EQ( v3.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v3).v, 2 );
+
+        swap( v, v3 );
+
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v).v, 2 );
+
+        BOOST_TEST_EQ( v3.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v3).v, 1 );
+
+        variant<X1, X2> v4( in_place_index_t<1>{}, 3 );
+
+        BOOST_TEST_EQ( v4.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v4).v, 3 );
+
+        swap( v, v4 );
+
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v).v, 3 );
+
+        BOOST_TEST_EQ( v4.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v4).v, 2 );
+
+        variant<X1, X2> v5( in_place_index_t<0>{}, 4 );
+
+        BOOST_TEST_EQ( v5.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v5).v, 4 );
+
+        swap( v, v5 );
+
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v).v, 4 );
+
+        BOOST_TEST_EQ( v5.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v5).v, 3 );
+    }
+
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_trivial.cpp

@@ -0,0 +1,95 @@
+// Copyright 2020 Peter Dimov.
+// Distributed under the Boost Software License, Version 1.0.
+// https://www.boost.org/LICENSE_1_0.txt
+
+#if defined(_MSC_VER) && _MSC_VER < 1910
+# pragma warning(disable: 4503) // decorated name length exceeded
+#endif
+
+#include <boost/variant2/variant.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+#include <boost/config.hpp>
+#include <boost/config/workaround.hpp>
+
+#include <boost/mp11.hpp>
+using namespace boost::mp11;
+
+//
+
+struct D
+{
+    ~D() noexcept {}
+};
+
+struct CC1
+{
+    CC1( CC1 const& ) noexcept {}
+};
+
+struct CC2
+{
+    CC2( CC2 const& ) = delete;
+};
+
+struct MC1
+{
+    MC1( MC1 && ) noexcept {}
+};
+
+struct MC2
+{
+    MC2( MC2 && ) = delete;
+};
+
+struct CA1
+{
+    CA1& operator=( CA1 const& ) noexcept { return *this; }
+};
+
+struct CA2
+{
+    CA2& operator=( CA2 const& ) = delete;
+};
+
+struct MA1
+{
+    MA1& operator=( MA1 && ) noexcept { return *this; }
+};
+
+struct MA2
+{
+    MA2& operator=( MA2 && ) = delete;
+};
+
+using namespace boost::variant2;
+namespace v2d = boost::variant2::detail;
+
+struct test
+{
+    template<class... T> void operator()( mp_list<T...> ) const noexcept
+    {
+        using U = mp_inherit<T...>;
+
+#if !BOOST_WORKAROUND( __GNUC__, < 5 )
+
+        BOOST_TEST_EQ( v2d::is_trivially_copy_constructible<variant<U>>::value, v2d::is_trivially_copy_constructible<U>::value );
+        BOOST_TEST_EQ( v2d::is_trivially_copy_assignable<variant<U>>::value, std::is_trivially_destructible<U>::value && v2d::is_trivially_copy_constructible<U>::value && v2d::is_trivially_copy_assignable<U>::value );
+
+#endif
+
+        BOOST_TEST_EQ( std::is_trivially_destructible<variant<U>>::value, std::is_trivially_destructible<U>::value );
+
+#if !BOOST_WORKAROUND(BOOST_LIBSTDCXX_VERSION, < 50000)
+
+        BOOST_TEST_EQ( v2d::is_trivially_move_constructible<variant<U>>::value, v2d::is_trivially_move_constructible<U>::value );
+        BOOST_TEST_EQ( v2d::is_trivially_move_assignable<variant<U>>::value, std::is_trivially_destructible<U>::value && v2d::is_trivially_move_constructible<U>::value && v2d::is_trivially_move_assignable<U>::value );
+
+#endif
+    }
+};
+
+int main()
+{
+    mp_for_each< mp_power_set< mp_list<D, CC1, CC2, MC1, MC2, CA1, CA2, MA1, MA2> > >( test() );
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_value_assign.cpp

@@ -0,0 +1,206 @@
+
+// Copyright 2017 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/variant2/variant.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+#include <type_traits>
+#include <utility>
+#include <string>
+
+using namespace boost::variant2;
+
+#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
+
+struct X1
+{
+    int v;
+
+    X1(): v(0) {}
+    explicit X1(int v): v(v) {}
+    X1(X1 const& r): v(r.v) {}
+    X1(X1&& r): v(r.v) {}
+    X1& operator=( X1 const& r ) { v = r.v; return *this; }
+    X1& operator=( X1&& r ) { v = r.v; return *this; }
+};
+
+inline bool operator==( X1 const& a, X1 const& b ) { return a.v == b.v; }
+
+STATIC_ASSERT( !std::is_nothrow_default_constructible<X1>::value );
+STATIC_ASSERT( !std::is_nothrow_copy_constructible<X1>::value );
+STATIC_ASSERT( !std::is_nothrow_move_constructible<X1>::value );
+STATIC_ASSERT( !std::is_nothrow_copy_assignable<X1>::value );
+STATIC_ASSERT( !std::is_nothrow_move_assignable<X1>::value );
+
+struct X2
+{
+    int v;
+
+    X2(): v(0) {}
+    explicit X2(int v): v(v) {}
+    X2(X2 const& r): v(r.v) {}
+    X2(X2&& r): v(r.v) {}
+    X2& operator=( X2 const& r ) { v = r.v; return *this; }
+    X2& operator=( X2&& r ) { v = r.v; return *this; }
+};
+
+inline bool operator==( X2 const& a, X2 const& b ) { return a.v == b.v; }
+
+STATIC_ASSERT( !std::is_nothrow_default_constructible<X2>::value );
+STATIC_ASSERT( !std::is_nothrow_copy_constructible<X2>::value );
+STATIC_ASSERT( !std::is_nothrow_move_constructible<X2>::value );
+STATIC_ASSERT( !std::is_nothrow_copy_assignable<X2>::value );
+STATIC_ASSERT( !std::is_nothrow_move_assignable<X2>::value );
+
+int main()
+{
+    {
+        variant<int> v;
+        BOOST_TEST_EQ( get<0>(v), 0 );
+
+        v = 1;
+        BOOST_TEST_EQ( get<0>(v), 1 );
+
+        v = 2;
+        BOOST_TEST_EQ( get<0>(v), 2 );
+
+        int w1 = 3;
+
+        v = w1;
+        BOOST_TEST_EQ( get<0>(v), 3 );
+
+        int const w2 = 4;
+
+        v = w2;
+        BOOST_TEST_EQ( get<0>(v), 4 );
+
+        v = std::move( w1 );
+        BOOST_TEST_EQ( get<0>(v), 3 );
+
+        v = std::move( w2 );
+        BOOST_TEST_EQ( get<0>(v), 4 );
+    }
+
+    {
+        variant<int, float> v;
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 0 );
+
+        v = 1;
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 1 );
+
+        v = 3.14f;
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v), 3.14f );
+
+        float w1 = 3.15f;
+
+        v = w1;
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v), 3.15f );
+
+        int const w2 = 2;
+
+        v = w2;
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 2 );
+
+        v = std::move(w1);
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v), 3.15f );
+
+        v = std::move(w2);
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 2 );
+    }
+
+    {
+        variant<int, int, float, std::string> v;
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 0 );
+
+        v = 3.14f;
+        BOOST_TEST_EQ( v.index(), 2 );
+        BOOST_TEST_EQ( get<2>(v), 3.14f );
+
+        float const w1 = 3.15f;
+
+        v = w1;
+        BOOST_TEST_EQ( v.index(), 2 );
+        BOOST_TEST_EQ( get<2>(v), 3.15f );
+
+        variant<int, int, float, std::string> v5( "s1" );
+
+        v = "s1";
+        BOOST_TEST_EQ( v.index(), 3 );
+        BOOST_TEST_EQ( get<3>(v), std::string("s1") );
+
+        std::string w2( "s2" );
+
+        v = w2;
+        BOOST_TEST_EQ( v.index(), 3 );
+        BOOST_TEST_EQ( get<3>(v), std::string("s2") );
+
+        v = std::move(w1);
+        BOOST_TEST_EQ( v.index(), 2 );
+        BOOST_TEST_EQ( get<2>(v), 3.15f );
+
+        v = std::move(w2);
+        BOOST_TEST_EQ( v.index(), 3 );
+        BOOST_TEST_EQ( get<3>(v), std::string("s2") );
+    }
+
+    {
+        variant<X1, X2> v;
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v).v, 0 );
+
+        v = X1{1};
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v).v, 1 );
+
+        v = X2{2};
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v).v, 2 );
+
+        X1 w1{3};
+
+        v = w1;
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v).v, 3 );
+
+        X1 const w2{4};
+
+        v = w2;
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v).v, 4 );
+
+        X2 w3{5};
+
+        v = w3;
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v).v, 5 );
+
+        X2 const w4{6};
+
+        v = w4;
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST_EQ( get<1>(v).v, 6 );
+
+        v = std::move(w1);
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v).v, 3 );
+
+        v = std::move(w2);
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v).v, 4 );
+    }
+
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_value_assign_cx.cpp

@@ -0,0 +1,106 @@
+
+// Copyright 2017 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/variant2/variant.hpp>
+
+using namespace boost::variant2;
+
+struct X
+{
+    int v;
+    X() = default;
+    constexpr X( int v ): v( v ) {}
+    constexpr operator int() const { return v; }
+};
+
+struct Y
+{
+    int v;
+    constexpr Y(): v() {}
+    constexpr Y( int v ): v( v ) {}
+    constexpr operator int() const { return v; }
+};
+
+enum E
+{
+    v
+};
+
+#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
+
+template<class V, class T, class A> constexpr A test( A const& a )
+{
+    V v;
+
+    v = a;
+
+    return get<T>(v);
+}
+
+int main()
+{
+    {
+        constexpr auto w = test<variant<int>, int>( 1 );
+        STATIC_ASSERT( w == 1 );
+    }
+
+    {
+        constexpr auto w = test<variant<X>, X>( 1 );
+        STATIC_ASSERT( w == 1 );
+    }
+
+#if defined( BOOST_LIBSTDCXX_VERSION ) && BOOST_LIBSTDCXX_VERSION < 50000
+#else
+
+    {
+        constexpr auto w = test<variant<Y>, Y>( 1 );
+        STATIC_ASSERT( w == 1 );
+    }
+
+#endif
+
+    {
+        constexpr auto w = test<variant<int, float>, int>( 1 );
+        STATIC_ASSERT( w == 1 );
+    }
+
+    {
+        constexpr auto w = test<variant<int, float>, float>( 3.0f );
+        STATIC_ASSERT( w == 3.0f );
+    }
+
+    {
+        constexpr auto w = test<variant<int, int, float>, float>( 3.0f );
+        STATIC_ASSERT( w == 3.0f );
+    }
+
+    {
+        constexpr auto w = test<variant<E, E, X>, X>( 1 );
+        STATIC_ASSERT( w == 1 );
+    }
+
+    {
+        constexpr auto w = test<variant<int, int, float, float, X>, X>( X(1) );
+        STATIC_ASSERT( w == 1 );
+    }
+
+#if defined( BOOST_LIBSTDCXX_VERSION ) && BOOST_LIBSTDCXX_VERSION < 50000
+#else
+
+    {
+        constexpr auto w = test<variant<E, E, Y>, Y>( 1 );
+        STATIC_ASSERT( w == 1 );
+    }
+
+    {
+        constexpr auto w = test<variant<int, int, float, float, Y>, Y>( Y(1) );
+        STATIC_ASSERT( w == 1 );
+    }
+
+#endif
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_value_construct.cpp

@@ -0,0 +1,124 @@
+
+// Copyright 2017 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/variant2/variant.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+#include <type_traits>
+#include <utility>
+#include <string>
+
+using namespace boost::variant2;
+
+struct X
+{
+    operator int() const { return 2; }
+};
+
+int main()
+{
+    {
+        variant<int> v( 1 );
+
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 1 );
+    }
+
+    {
+        variant<int> v( 'a' );
+
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 'a' );
+    }
+
+    {
+        variant<int> v( X{} );
+
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 2 );
+    }
+
+    {
+        variant<int const> v( 1 );
+
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 1 );
+    }
+
+    {
+        variant<int const> v( 'a' );
+
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 'a' );
+    }
+
+    {
+        variant<int const> v( X{} );
+
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST_EQ( get<0>(v), 2 );
+    }
+
+    {
+        variant<int, float, std::string> v( 1 );
+
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST( holds_alternative<int>(v) );
+        BOOST_TEST_EQ( get<0>(v), 1 );
+    }
+
+    {
+        variant<int, float, std::string> v( 'a' );
+
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST( holds_alternative<int>(v) );
+        BOOST_TEST_EQ( get<0>(v), 'a' );
+    }
+
+    {
+        variant<int, float, std::string> v( X{} );
+
+        BOOST_TEST_EQ( v.index(), 0 );
+        BOOST_TEST( holds_alternative<int>(v) );
+        BOOST_TEST_EQ( get<0>(v), 2 );
+    }
+
+    {
+        variant<int, float, std::string> v( 3.14f );
+
+        BOOST_TEST_EQ( v.index(), 1 );
+        BOOST_TEST( holds_alternative<float>(v) );
+        BOOST_TEST_EQ( get<1>(v), 3.14f );
+    }
+
+    {
+        variant<int, float, std::string> v( "text" );
+
+        BOOST_TEST_EQ( v.index(), 2 );
+        BOOST_TEST( holds_alternative<std::string>(v) );
+        BOOST_TEST_EQ( get<2>(v), std::string("text") );
+    }
+
+    {
+        variant<int, int, float, std::string> v( 3.14f );
+
+        BOOST_TEST_EQ( v.index(), 2 );
+        BOOST_TEST( holds_alternative<float>(v) );
+        BOOST_TEST_EQ( get<2>(v), 3.14f );
+    }
+
+    {
+        variant<int, int, float, std::string> v( "text" );
+
+        BOOST_TEST_EQ( v.index(), 3 );
+        BOOST_TEST( holds_alternative<std::string>(v) );
+        BOOST_TEST_EQ( get<3>(v), std::string("text") );
+    }
+
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_value_construct_cx.cpp

@@ -0,0 +1,109 @@
+
+// Copyright 2017 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/variant2/variant.hpp>
+
+using namespace boost::variant2;
+
+struct X
+{
+    constexpr operator int() const { return 2; }
+};
+
+#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
+
+int main()
+{
+    {
+        constexpr variant<int> v( 1 );
+
+        STATIC_ASSERT( v.index() == 0 );
+        STATIC_ASSERT( get<0>(v) == 1 );
+    }
+
+    {
+        constexpr variant<int> v( 'a' );
+
+        STATIC_ASSERT( v.index() == 0 );
+        STATIC_ASSERT( get<0>(v) == 'a' );
+    }
+
+    {
+        constexpr variant<int> v( X{} );
+
+        STATIC_ASSERT( v.index() == 0 );
+        STATIC_ASSERT( get<0>(v) == 2 );
+    }
+
+    {
+        constexpr variant<int const> v( 1 );
+
+        STATIC_ASSERT( v.index() == 0 );
+        STATIC_ASSERT( get<0>(v) == 1 );
+    }
+
+    {
+        constexpr variant<int const> v( 'a' );
+
+        STATIC_ASSERT( v.index() == 0 );
+        STATIC_ASSERT( get<0>(v) == 'a' );
+    }
+
+    {
+        constexpr variant<int const> v( X{} );
+
+        STATIC_ASSERT( v.index() == 0 );
+        STATIC_ASSERT( get<0>(v) == 2 );
+    }
+
+    {
+        constexpr variant<int, float, X> v( 1 );
+
+        STATIC_ASSERT( v.index() == 0 );
+        STATIC_ASSERT( holds_alternative<int>(v) );
+        STATIC_ASSERT( get<0>(v) == 1 );
+    }
+
+    {
+        constexpr variant<int, float, X> v( 'a' );
+
+        STATIC_ASSERT( v.index() == 0 );
+        STATIC_ASSERT( holds_alternative<int>(v) );
+        STATIC_ASSERT( get<0>(v) == 'a' );
+    }
+
+    {
+        constexpr variant<int, float, X> v( 3.14f );
+
+        STATIC_ASSERT( v.index() == 1 );
+        STATIC_ASSERT( holds_alternative<float>(v) );
+        STATIC_ASSERT( get<1>(v) == 3.14f );
+    }
+
+    {
+        constexpr variant<int, float, X> v( X{} );
+
+        STATIC_ASSERT( v.index() == 2 );
+        STATIC_ASSERT( holds_alternative<X>(v) );
+    }
+
+    {
+        constexpr variant<int, int, float, X> v( 3.14f );
+
+        STATIC_ASSERT( v.index() == 2 );
+        STATIC_ASSERT( holds_alternative<float>(v) );
+        STATIC_ASSERT( get<2>(v) == 3.14f );
+    }
+
+    {
+        constexpr variant<int, int, float, X> v( X{} );
+
+        STATIC_ASSERT( v.index() == 3 );
+        STATIC_ASSERT( holds_alternative<X>(v) );
+    }
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_valueless.cpp

@@ -0,0 +1,260 @@
+
+// Copyright 2017 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
+
+#if defined(_MSC_VER)
+# pragma warning( disable: 4702 ) // unreachable code
+#endif
+
+#include <boost/variant2/variant.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <type_traits>
+#include <utility>
+#include <string>
+#include <stdexcept>
+
+using namespace boost::variant2;
+namespace v2d = boost::variant2::detail;
+
+#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
+
+//
+
+enum E1 { e1 };
+enum E1x { e1x };
+
+struct X1
+{
+    X1() = default;
+
+    X1( E1 ) noexcept {}
+    X1( E1x ) { throw std::runtime_error( "X1(E1x)" ); }
+};
+
+STATIC_ASSERT( std::is_nothrow_default_constructible<X1>::value );
+STATIC_ASSERT( std::is_nothrow_copy_constructible<X1>::value );
+STATIC_ASSERT( std::is_nothrow_move_constructible<X1>::value );
+STATIC_ASSERT( std::is_trivially_destructible<X1>::value );
+STATIC_ASSERT( v2d::is_trivially_move_assignable<X1>::value );
+STATIC_ASSERT( std::is_nothrow_constructible<X1, E1>::value );
+STATIC_ASSERT( !std::is_nothrow_constructible<X1, E1x>::value );
+
+enum E2 { e2 };
+enum E2x { e2x };
+
+struct X2
+{
+    X2();
+    ~X2();
+
+    X2( E2 ) noexcept {}
+    X2( E2x ) { throw std::runtime_error( "X2(E2x)" ); }
+};
+
+X2::X2() {}
+X2::~X2() {}
+
+STATIC_ASSERT( !std::is_nothrow_default_constructible<X2>::value );
+STATIC_ASSERT( std::is_nothrow_copy_constructible<X2>::value );
+STATIC_ASSERT( std::is_nothrow_move_constructible<X2>::value );
+STATIC_ASSERT( !std::is_trivially_destructible<X2>::value );
+STATIC_ASSERT( std::is_nothrow_constructible<X2, E2>::value );
+STATIC_ASSERT( !std::is_nothrow_constructible<X2, E2x>::value );
+
+enum E3 { e3 };
+enum E3x { e3x };
+
+struct X3
+{
+    X3();
+
+    X3( X3 const& ) {}
+    X3( X3&& ) {}
+
+    X3( E3 ) noexcept {}
+    X3( E3x ) { throw std::runtime_error( "X3(E3x)" ); }
+
+    X3& operator=( X3 const& ) = default;
+    X3& operator=( X3&& ) = default;
+};
+
+X3::X3() {}
+
+STATIC_ASSERT( !std::is_nothrow_default_constructible<X3>::value );
+STATIC_ASSERT( !std::is_nothrow_copy_constructible<X3>::value );
+STATIC_ASSERT( !std::is_nothrow_move_constructible<X3>::value );
+STATIC_ASSERT( std::is_trivially_destructible<X3>::value );
+//STATIC_ASSERT( v2d::is_trivially_move_assignable<X3>::value );
+STATIC_ASSERT( std::is_nothrow_constructible<X3, E3>::value );
+STATIC_ASSERT( !std::is_nothrow_constructible<X3, E3x>::value );
+
+//
+
+STATIC_ASSERT( std::is_nothrow_default_constructible<monostate>::value );
+STATIC_ASSERT( std::is_nothrow_copy_constructible<monostate>::value );
+STATIC_ASSERT( std::is_nothrow_move_constructible<monostate>::value );
+STATIC_ASSERT( std::is_trivially_destructible<monostate>::value );
+
+//
+
+int main()
+{
+    {
+        variant<X2, X1> v;
+
+        BOOST_TEST_EQ( v.index(), 0 );
+
+        try
+        {
+            v = e1x;
+            BOOST_ERROR( "`v = e1x;` failed to throw" );
+        }
+        catch( std::exception const& )
+        {
+            // strong guarantee
+            BOOST_TEST_EQ( v.index(), 0 );
+        }
+    }
+
+    {
+        variant<X1, X2> v( e2 );
+
+        BOOST_TEST_EQ( v.index(), 1 );
+
+        try
+        {
+            v = e1x;
+            BOOST_ERROR( "`v = e1x;` failed to throw" );
+        }
+        catch( std::exception const& )
+        {
+            // strong guarantee
+            BOOST_TEST_EQ( v.index(), 1 );
+        }
+    }
+
+    {
+        variant<X2, X1, monostate> v;
+
+        BOOST_TEST_EQ( v.index(), 0 );
+
+        try
+        {
+            v = e1x;
+            BOOST_ERROR( "`v = e1x;` failed to throw" );
+        }
+        catch( std::exception const& )
+        {
+            // strong guarantee
+            BOOST_TEST_EQ( v.index(), 0 );
+        }
+    }
+
+    {
+        variant<X1, X2, monostate> v( e2 );
+
+        BOOST_TEST_EQ( v.index(), 1 );
+
+        try
+        {
+            v = e1x;
+            BOOST_ERROR( "`v = e1x;` failed to throw" );
+        }
+        catch( std::exception const& )
+        {
+            // strong guarantee
+            BOOST_TEST_EQ( v.index(), 1 );
+        }
+    }
+
+    {
+        variant<X2, X3, X1> v;
+
+        BOOST_TEST_EQ( v.index(), 0 );
+
+        try
+        {
+            v = e3x;
+            BOOST_ERROR( "`v = e3x;` failed to throw" );
+        }
+        catch( std::exception const& )
+        {
+            // strong guarantee
+            BOOST_TEST_EQ( v.index(), 0 );
+        }
+    }
+
+    {
+        variant<X2, X3, X1, monostate> v;
+
+        BOOST_TEST_EQ( v.index(), 0 );
+
+        try
+        {
+            v = e3x;
+            BOOST_ERROR( "`v = e3x;` failed to throw" );
+        }
+        catch( std::exception const& )
+        {
+            // strong guarantee
+            BOOST_TEST_EQ( v.index(), 0 );
+        }
+    }
+
+    {
+        variant<X2, X3> v;
+
+        BOOST_TEST_EQ( v.index(), 0 );
+
+        try
+        {
+            v = e3x;
+            BOOST_ERROR( "`v = e3x;` failed to throw" );
+        }
+        catch( std::exception const& )
+        {
+            // double buffered, no change
+            BOOST_TEST_EQ( v.index(), 0 );
+        }
+    }
+
+    {
+        variant<X3, X1> v;
+
+        BOOST_TEST_EQ( v.index(), 0 );
+
+        try
+        {
+            v = e1x;
+            BOOST_ERROR( "`v = e1x;` failed to throw" );
+        }
+        catch( std::exception const& )
+        {
+            // strong guarantee
+            BOOST_TEST_EQ( v.index(), 0 );
+        }
+    }
+
+    {
+        variant<X3, X1, monostate> v;
+
+        BOOST_TEST_EQ( v.index(), 0 );
+
+        try
+        {
+            v = e1x;
+            BOOST_ERROR( "`v = e1x;` failed to throw" );
+        }
+        catch( std::exception const& )
+        {
+            // strong guarantee
+            BOOST_TEST_EQ( v.index(), 0 );
+        }
+    }
+
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_visit.cpp

@@ -0,0 +1,130 @@
+
+// Copyright 2017 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
+
+#if defined(_MSC_VER)
+# pragma warning( disable: 4244 ) // conversion from float to int, possible loss of data
+#endif
+
+#include <boost/variant2/variant.hpp>
+#include <boost/mp11.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+#include <boost/config.hpp>
+#include <type_traits>
+#include <utility>
+#include <string>
+#include <cstdio>
+
+using namespace boost::variant2;
+using boost::mp11::mp_size_t;
+
+struct X
+{
+};
+
+struct F
+{
+    mp_size_t<1> operator()( X& ) const;
+    mp_size_t<2> operator()( X const& ) const;
+    mp_size_t<3> operator()( X&& ) const;
+    mp_size_t<4> operator()( X const&& ) const;
+};
+
+int main()
+{
+    {
+        BOOST_TEST_EQ( (visit( []{ return 5; } )), 5 );
+    }
+
+    {
+        variant<int> v( 1 );
+
+        BOOST_TEST_EQ( (visit( []( int x ){ return x; }, v )), 1 );
+
+        visit( []( int x ){ BOOST_TEST_EQ( x, 1 ); }, v );
+        visit( []( int x ){ BOOST_TEST_EQ( x, 1 ); }, std::move(v) );
+    }
+
+    {
+        variant<int> const v( 2 );
+
+        BOOST_TEST_EQ( (visit( []( int x ){ return x; }, v )), 2 );
+
+        visit( []( int x ){ BOOST_TEST_EQ( x, 2 ); }, v );
+        visit( []( int x ){ BOOST_TEST_EQ( x, 2 ); }, std::move(v) );
+    }
+
+    {
+        variant<int const> v( 3 );
+
+        BOOST_TEST_EQ( (visit( []( int x ){ return x; }, v )), 3 );
+
+        visit( []( int x ){ BOOST_TEST_EQ( x, 3 ); }, v );
+        visit( []( int x ){ BOOST_TEST_EQ( x, 3 ); }, std::move(v) );
+    }
+
+    {
+        variant<int const> const v( 4 );
+
+        BOOST_TEST_EQ( (visit( []( int x ){ return x; }, v )), 4 );
+
+        visit( []( int x ){ BOOST_TEST_EQ( x, 4 ); }, v );
+        visit( []( int x ){ BOOST_TEST_EQ( x, 4 ); }, std::move(v) );
+    }
+
+    {
+        variant<int, float> v1( 1 );
+        variant<int, float> const v2( 3.14f );
+
+        BOOST_TEST_EQ( (visit( []( int x1, float x2 ){ return (int)(x1 * 1000) + (int)(x2 * 100); }, v1, v2 )), 1314 );
+
+        visit( []( int x1, float x2 ){ BOOST_TEST_EQ( x1, 1 ); BOOST_TEST_EQ( x2, 3.14f ); }, v1, v2 );
+        visit( []( int x1, float x2 ){ BOOST_TEST_EQ( x1, 1 ); BOOST_TEST_EQ( x2, 3.14f ); }, std::move(v1), std::move(v2) );
+    }
+
+    {
+        variant<int, float, double> v1( 1 );
+        variant<int, float, double> const v2( 3.14f );
+        variant<int, float, double> v3( 6.28 );
+
+        BOOST_TEST_EQ( (visit( []( int x1, float x2, double x3 ){ return (int)(x1 * 100) * 1000000 + (int)(x2 * 100) * 1000 + (int)(x3 * 100); }, v1, v2, v3 )), 100314628 );
+
+        visit( []( int x1, float x2, double x3 ){ BOOST_TEST_EQ( x1, 1 ); BOOST_TEST_EQ( x2, 3.14f ); BOOST_TEST_EQ( x3, 6.28 ); }, v1, v2, v3 );
+        visit( []( int x1, float x2, double x3 ){ BOOST_TEST_EQ( x1, 1 ); BOOST_TEST_EQ( x2, 3.14f ); BOOST_TEST_EQ( x3, 6.28 ); }, std::move(v1), std::move(v2), std::move(v3) );
+    }
+
+    {
+        variant<int, float, double, char> v1( 1 );
+        variant<int, float, double, char> const v2( 3.14f );
+        variant<int, float, double, char> v3( 6.28 );
+        variant<int, float, double, char> const v4( 'A' );
+
+        BOOST_TEST_EQ( (visit( []( int x1, float x2, double x3, char x4 ){ return (long long)(x1 * 100) * 100000000 + (long long)(x2 * 100) * 100000 + (long long)(x3 * 10000) + (int)x4; }, v1, v2, v3, v4 )), 10031462800 + 'A' );
+
+        visit( []( int x1, float x2, double x3, char x4 ){ BOOST_TEST_EQ( x1, 1 ); BOOST_TEST_EQ( x2, 3.14f ); BOOST_TEST_EQ( x3, 6.28 ); BOOST_TEST_EQ( x4, 'A' ); }, v1, v2, v3, v4 );
+        visit( []( int x1, float x2, double x3, char x4 ){ BOOST_TEST_EQ( x1, 1 ); BOOST_TEST_EQ( x2, 3.14f ); BOOST_TEST_EQ( x3, 6.28 ); BOOST_TEST_EQ( x4, 'A' ); }, std::move(v1), std::move(v2), std::move(v3), std::move(v4) );
+    }
+
+    {
+        variant<X> v;
+        variant<X> const cv;
+
+        BOOST_TEST_EQ( decltype(visit(F{}, v))::value, 1 );
+        BOOST_TEST_EQ( decltype(visit(F{}, cv))::value, 2 );
+        BOOST_TEST_EQ( decltype(visit(F{}, std::move(v)))::value, 3 );
+
+#if !BOOST_WORKAROUND(BOOST_GCC, < 40900)
+
+        // g++ 4.8 doesn't handle const&& particularly well
+        BOOST_TEST_EQ( decltype(visit(F{}, std::move(cv)))::value, 4 );
+
+#endif
+    }
+
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_visit_by_index.cpp

@@ -0,0 +1,126 @@
+// Copyright 2017, 2021 Peter Dimov.
+// Distributed under the Boost Software License, Version 1.0.
+// https://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/variant2/variant.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+#include <boost/mp11.hpp>
+#include <boost/config.hpp>
+
+using namespace boost::variant2;
+using boost::mp11::mp_int;
+
+struct X
+{
+};
+
+struct F1
+{
+    int operator()( X& ) const { return 1; }
+    int operator()( X const& ) const { return 2; }
+    int operator()( X&& ) const { return 3; }
+    int operator()( X const&& ) const { return 4; }
+};
+
+struct F2
+{
+    mp_int<1> operator()( X& ) const { return {}; }
+    mp_int<2> operator()( X const& ) const { return {}; }
+    mp_int<3> operator()( X&& ) const { return {}; }
+    mp_int<4> operator()( X const&& ) const { return {}; }
+};
+
+int main()
+{
+    {
+        variant<int, int, float> v;
+
+        visit_by_index( v,
+            []( int& x ){ BOOST_TEST_EQ( x, 0 ); },
+            []( int&   ){ BOOST_ERROR( "incorrect alternative" ); },
+            []( float& ){ BOOST_ERROR( "incorrect alternative" ); } );
+    }
+
+    {
+        variant<int const, int, float const> v( in_place_index_t<0>(), 1 );
+
+        visit_by_index( v,
+            []( int const& x ){ BOOST_TEST_EQ( x, 1 ); },
+            []( int&         ){ BOOST_ERROR( "incorrect alternative" ); },
+            []( float const& ){ BOOST_ERROR( "incorrect alternative" ); } );
+    }
+
+    {
+        variant<int, int, float> const v( in_place_index_t<1>(), 2 );
+
+        visit_by_index( v,
+            []( int const&   ){ BOOST_ERROR( "incorrect alternative" ); },
+            []( int const& x ){ BOOST_TEST_EQ( x, 2 ); },
+            []( float const& ){ BOOST_ERROR( "incorrect alternative" ); } );
+    }
+
+    {
+        variant<int const, int, float const> const v( 3.14f );
+
+        visit_by_index( v,
+            []( int const&     ){ BOOST_ERROR( "incorrect alternative" ); },
+            []( int const&     ){ BOOST_ERROR( "incorrect alternative" ); },
+            []( float const& x ){ BOOST_TEST_EQ( x, 3.14f ); } );
+    }
+
+    {
+        variant<int, float> const v( 7 );
+
+        auto r = visit_by_index( v,
+            []( int const& x   ) -> double { return x; },
+            []( float const& x ) -> double { return x; } );
+
+        BOOST_TEST_TRAIT_SAME( decltype(r), double );
+        BOOST_TEST_EQ( r, 7.0 );
+    }
+
+    {
+        variant<int, float> const v( 2.0f );
+
+        auto r = visit_by_index( v,
+            []( int const& x   ) { return x + 0.0; },
+            []( float const& x ) { return x + 0.0; } );
+
+        BOOST_TEST_TRAIT_SAME( decltype(r), double );
+        BOOST_TEST_EQ( r, 2.0 );
+    }
+
+    {
+        variant<int, float, double> const v( 3.0 );
+
+        auto r = visit_by_index<double>( v,
+            []( int const& x    ) { return x; },
+            []( float const& x  ) { return x; },
+            []( double const& x ) { return x; } );
+
+        BOOST_TEST_TRAIT_SAME( decltype(r), double );
+        BOOST_TEST_EQ( r, 3.0 );
+    }
+
+    {
+        variant<X> v;
+        variant<X> const cv;
+
+        F1 f1;
+
+        BOOST_TEST_EQ( visit_by_index( v, f1 ), 1 );
+        BOOST_TEST_EQ( visit_by_index( cv, f1 ), 2 );
+        BOOST_TEST_EQ( visit_by_index( std::move( v ), f1 ), 3 );
+        BOOST_TEST_EQ( visit_by_index( std::move( cv ), f1 ), 4 );
+
+        F2 f2;
+
+        BOOST_TEST_EQ( visit_by_index<int>( v, f2 ), 1 );
+        BOOST_TEST_EQ( visit_by_index<int>( cv, f2 ), 2 );
+        BOOST_TEST_EQ( visit_by_index<int>( std::move( v ), f2 ), 3 );
+        BOOST_TEST_EQ( visit_by_index<int>( std::move( cv ), f2 ), 4 );
+    }
+
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_visit_derived.cpp

@@ -0,0 +1,56 @@
+// Copyright 2017, 2020 Peter Dimov.
+// Distributed under the Boost Software License, Version 1.0.
+// https://www.boost.org/LICENSE_1_0.txt
+
+#if defined(_MSC_VER)
+# pragma warning( disable: 4244 ) // conversion from float to int, possible loss of data
+#endif
+
+#include <boost/variant2/variant.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <boost/config.hpp>
+#include <boost/config/workaround.hpp>
+#include <utility>
+
+struct X: boost::variant2::variant<int, float>
+{
+#if BOOST_WORKAROUND( BOOST_MSVC, < 1940 )
+
+    template<class T> explicit X( T&& t ): variant( std::forward<T>( t ) ) {};
+
+#else
+
+    using variant::variant;
+
+#endif
+};
+
+template<class... T> struct Y: boost::variant2::variant<T...>
+{
+    using boost::variant2::variant<T...>::variant;
+};
+
+int main()
+{
+    {
+        X v1( 1 );
+        X const v2( 3.14f );
+
+        BOOST_TEST_EQ( (visit( []( int x1, float x2 ){ return (int)(x1 * 1000) + (int)(x2 * 100); }, v1, v2 )), 1314 );
+
+        visit( []( int x1, float x2 ){ BOOST_TEST_EQ( x1, 1 ); BOOST_TEST_EQ( x2, 3.14f ); }, v1, v2 );
+        visit( []( int x1, float x2 ){ BOOST_TEST_EQ( x1, 1 ); BOOST_TEST_EQ( x2, 3.14f ); }, std::move(v1), std::move(v2) );
+    }
+
+    {
+        Y<int, float> v1( 1 );
+        Y<int, float> const v2( 3.14f );
+
+        BOOST_TEST_EQ( (visit( []( int x1, float x2 ){ return (int)(x1 * 1000) + (int)(x2 * 100); }, v1, v2 )), 1314 );
+
+        visit( []( int x1, float x2 ){ BOOST_TEST_EQ( x1, 1 ); BOOST_TEST_EQ( x2, 3.14f ); }, v1, v2 );
+        visit( []( int x1, float x2 ){ BOOST_TEST_EQ( x1, 1 ); BOOST_TEST_EQ( x2, 3.14f ); }, std::move(v1), std::move(v2) );
+    }
+
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean/test/variant_visit_r.cpp

@@ -0,0 +1,98 @@
+
+// Copyright 2017 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
+
+#if defined(_MSC_VER)
+# pragma warning( disable: 4244 ) // conversion from float to int, possible loss of data
+#endif
+
+#include <boost/variant2/variant.hpp>
+#include <boost/core/lightweight_test.hpp>
+
+using namespace boost::variant2;
+
+struct F1
+{
+    template<class T1> T1 operator()( T1 t1 ) const
+    {
+        return t1;
+    }
+};
+
+struct F2
+{
+    template<class T1, class T2> auto operator()( T1 t1, T2 t2 ) const -> decltype( t1 + t2 )
+    {
+        return t1 + t2;
+    }
+};
+
+struct F3
+{
+    template<class T1, class T2, class T3> auto operator()( T1 t1, T2 t2, T3 t3 ) const -> decltype( t1 + t2 + t3 )
+    {
+        return t1 + t2 + t3;
+    }
+};
+
+struct F4
+{
+    template<class T1, class T2, class T3, class T4> auto operator()( T1 t1, T2 t2, T3 t3, T4 t4 ) const -> decltype( t1 + t2 + t3 + t4 )
+    {
+        return t1 + t2 + t3 + t4;
+    }
+};
+
+int main()
+{
+    {
+        BOOST_TEST_EQ( (visit<int>( []{ return 3.14f; } )), 3 );
+    }
+
+    {
+        variant<int, float> v( 1 );
+
+        BOOST_TEST_EQ( visit<int>( F1(), v ), 1 );
+        BOOST_TEST_EQ( visit<float>( F1(), v ), 1.0f );
+    }
+
+    {
+        variant<int, float> const v( 3.14f );
+
+        BOOST_TEST_EQ( visit<int>( F1(), v ), 3 );
+        BOOST_TEST_EQ( visit<float>( F1(), v ), 3.14f );
+    }
+
+    {
+        variant<int, float> v1( 1 );
+        variant<int, float> const v2( 3.14f );
+
+        BOOST_TEST_EQ( visit<int>( F2(), v1, v2 ), 4 );
+        BOOST_TEST_EQ( visit<float>( F2(), v1, v2 ), 1 + 3.14f );
+    }
+
+    {
+        variant<int, float, double> v1( 1 );
+        variant<int, float, double> const v2( 3.14f );
+        variant<int, float, double> v3( 6.28 );
+
+        BOOST_TEST_EQ( visit<int>( F3(), v1, v2, v3 ), 10 );
+        BOOST_TEST_EQ( visit<float>( F3(), v1, v2, v3 ), static_cast<float>( 1 + 3.14f + 6.28 ) );
+    }
+
+    {
+        variant<int, float, double, char> v1( 1 );
+        variant<int, float, double, char> const v2( 3.14f );
+        variant<int, float, double, char> v3( 6.28 );
+        variant<int, float, double, char> const v4( 'A' );
+
+        BOOST_TEST_EQ( visit<int>( F4(), v1, v2, v3, v4 ), 10 + 'A' );
+        BOOST_TEST_EQ( visit<float>( F4(), v1, v2, v3, v4 ), static_cast<float>( 1 + 3.14f + 6.28 + 'A' ) );
+    }
+
+    return boost::report_errors();
+}

externals/vcpkg/buildtrees/boost-variant2/stdout-x64-windows.log

@@ -0,0 +1,7 @@
+-- Downloading https://github.com/boostorg/variant2/archive/boost-1.79.0.tar.gz -> boostorg-variant2-boost-1.79.0.tar.gz...
+-- Extracting source D:/a/1/s/externals/vcpkg/downloads/boostorg-variant2-boost-1.79.0.tar.gz
+-- Using source at D:/a/1/s/externals/vcpkg/buildtrees/boost-variant2/src/ost-1.79.0-3093c57029.clean
+-- Copying headers
+-- Copying headers done
+-- Installing: D:/a/1/s/externals/vcpkg/packages/boost-variant2_x64-windows/share/boost-variant2/usage
+-- Installing: D:/a/1/s/externals/vcpkg/packages/boost-variant2_x64-windows/share/boost-variant2/copyright

externals/vcpkg/buildtrees/boost-variant2/x64-windows.vcpkg_abi_info.txt

@@ -0,0 +1,15 @@
+boost-assert a50eed453b8be6c8932fb3d5f8feaf194a2ebeaed7982db4e36e3ba17f3ec107
+boost-config 797535e8975ed7cf5bbe11d9f7fe26caa5da8fe819888564758d82a21109fade
+boost-mp11 e71044de916a0c8906043124be4939850655f76df511f085fa53adeb68e2cb2c
+boost-vcpkg-helpers c81c7b003df356a1a120a7c0c2f5a2ac95f3c33b006a2a5b4c02dcf0c9f3deaa
+cmake 3.23.2
+features core
+portfile.cmake 8e6554787f4df23aec4f8ce4c8992c935e02c27b1fc1b9f19e2c6cc2068e2dd9
+ports.cmake 366c60b768113102408b32ac1d7c7b48ef7d30a477af2a220ecc222d9ffa3166
+post_build_checks 2
+powershell 7.2.5
+triplet x64-windows
+triplet_abi 4556164a2cd3dd6f4742101eabb46def7e71b6e5856faa88e5d005aac12a803c-c0600b35e024ce0485ed253ef5419f3686f7257cfb58cb6a24febcb600fc4b4c-27ebd443f77a6c449168adfa6ce8def60cf46e88
+vcpkg.json ba57e1497b1d6517422d424067025ec12475e3c43a36714181a287c3be94f1a4
+vcpkg_from_git 0aab20e34e84d52ba4763f009e539bfa8f418c41c918c8cf700156f1a8551a10
+vcpkg_from_github b743742296a114ea1b18ae99672e02f142c4eb2bef7f57d36c038bedbfb0502f