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Salvo 'LtWorf' Tomaselli 2020-06-09 19:37:00 +02:00
parent 67d050e07d
commit f139257d2c
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1 changed files with 5 additions and 6 deletions
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relational/optimizer.py
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@ -24,21 +24,20 @@
# the parse tree itself will be modified accordingly. # the parse tree itself will be modified accordingly.
from typing import Union, Optional, Dict, Any, Tuple from typing import Union, Optional, Dict, Any, Tuple
from relational.relation import Relation
from relational import optimizations from relational import optimizations
from relational.parser import Node, Variable, Unary, Binary, op_functions, tokenize, tree from relational.parser import Node, Variable, Unary, Binary, op_functions, tokenize, tree
from relational import querysplit from relational import querysplit
from relational.maintenance import UserInterface from relational.maintenance import UserInterface
ContextDict = Dict[str,Any]
def optimize_program(code, rels: Dict[str, Relation]):
def optimize_program(code, rels: ContextDict):
''' '''
Optimize an entire program, composed by multiple expressions Optimize an entire program, composed by multiple expressions
and assignments. and assignments.
''' '''
lines = code.split('\n') lines = code.split('\n')
context = {} # type: ContextDict context = {}
for line in lines: for line in lines:
line = line.strip() line = line.strip()
@ -53,7 +52,7 @@ def optimize_program(code, rels: ContextDict):
return querysplit.split(node, rels) return querysplit.split(node, rels)
def optimize_all(expression: Union[str, Node], rels: ContextDict, specific: bool = True, general: bool = True, debug: Optional[list] = None, tostr: bool = True) -> Union[str, Node]: def optimize_all(expression: Union[str, Node], rels: Dict[str, Relation], specific: bool = True, general: bool = True, debug: Optional[list] = None, tostr: bool = True) -> Union[str, Node]:
'''This function performs all the available optimizations. '''This function performs all the available optimizations.
expression : see documentation of this module expression : see documentation of this module
@ -98,7 +97,7 @@ def optimize_all(expression: Union[str, Node], rels: ContextDict, specific: bool
return n return n
def specific_optimize(expression, rels: ContextDict): def specific_optimize(expression, rels: Dict[str, Relation]):
'''This function performs specific optimizations. Means that it will need to '''This function performs specific optimizations. Means that it will need to
know the fields used by the relations. know the fields used by the relations.