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Enable evaluating asterisk

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This commit is contained in:
Bartłomiej Pluta
2019-07-08 19:33:14 +02:00
parent 63c020fbb9
commit 21cbf2bcbd
6 changed files with 120 additions and 35 deletions
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2
smnp/environment/environment.py
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@@ -122,7 +122,7 @@ class Environment():
def __str__(self):
return self.scopesToString() + self.functionsToString() + self.methodsToString() + self.customFunctionsToString() + self.customMethodsToString()
return f"{self.scopesToString()}\n{self.functionsToString()}\n{self.methodsToString()}\n{self.customFunctionsToString()}\n{self.customMethodsToString()}"
def __repr__(self):
return self.__str__()

2
smnp/main.py
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@@ -16,7 +16,7 @@ def main():
ast = parse(tokens)
#ast.print()
ast.print()
env = createEnvironment()

4
smnp/runtime/evaluators/assignment.py
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@@ -1,3 +1,4 @@
from smnp.error.runtime import RuntimeException
from smnp.runtime.evaluator import Evaluator
from smnp.runtime.evaluators.expression import expressionEvaluator
@@ -7,6 +8,9 @@ class AssignmentEvaluator(Evaluator):
@classmethod
def evaluator(cls, node, environment):
target = node.target.value
if target.startswith("_"):
raise RuntimeException("Usage of variables with names starting with '_' is not allowed", node.target.pos)
value = expressionEvaluator(doAssert=True)(node.value, environment).value #TODO check if it isn't necessary to verify 'result' attr of EvaluatioNResult
scopeOfExistingVariable = environment.findVariableScope(target)
if scopeOfExistingVariable is None:

138
smnp/runtime/evaluators/asterisk.py
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@@ -1,48 +1,122 @@
from smnp.ast.node.identifier import IdentifierNode
from smnp.runtime.evaluator import evaluate
from smnp.runtime.evaluator import evaluate, Evaluator, EvaluationResult
from smnp.runtime.evaluators.expression import expressionEvaluator
from smnp.type.model import Type
from smnp.type.value import Value
def evaluateAsterisk(asterisk, environment):
iterator = evaluate(asterisk.iterator, environment)
if iterator.type == Type.INTEGER:
evaluateAsteriskForNumber(asterisk, environment, iterator)
class AsteriskEvaluator(Evaluator):
if iterator.type == Type.LIST:
evaluateAsteriskForList(asterisk, environment, iterator)
@classmethod
def evaluator(cls, node, environment):
iterator = expressionEvaluator(doAssert=True)(node.iterator, environment).value #TODO check if it isn't necessary to verify 'result' attr of EvaluatioNResult
return Evaluator.oneOf(
cls._numberIteratorAsteriskEvaluator(iterator),
cls._listIteratorAsteriskEvaluator(iterator)
)(node, environment).value #TODO check if it isn't necessary to verify 'result' attr of EvaluatioNResult
@classmethod
def _numberIteratorAsteriskEvaluator(cls, evaluatedIterator):
def evaluator(node, environment):
if evaluatedIterator.type == Type.INTEGER:
results = []
automaticVariable = cls._automaticNamedVariable(node.iterator, environment, "_")
for i in range(evaluatedIterator.value):
environment.scopes[-1][automaticVariable] = Value(Type.INTEGER, i + 1)
result = evaluate(node.statement, environment).value #TODO check if it isn't necessary to verify 'result' attr of EvaluatioNResult
if result is not None and result.type != Type.VOID:
results.append(result)
del environment.scopes[-1][automaticVariable]
def evaluateAsteriskForNumber(asterisk, environment, count):
for i in range(count.value):
if type(asterisk.iterator) == IdentifierNode:
environment.scopes[-1][f"_{asterisk.iterator.identifier}"] = Value(Type.INTEGER, i+1)
return EvaluationResult.OK(Value(Type.LIST, results).decompose())
return EvaluationResult.FAIL()
return evaluator
@classmethod
def _automaticNamedVariable(cls, iteratorNode, environment, prefix=''):
if type(iteratorNode) == IdentifierNode:
return cls._automaticVariableName(environment, prefix, iteratorNode.value, False)
else:
environment.scopes[-1]["_"] = Value(Type.INTEGER, i+1)
return cls._automaticVariableName(environment, prefix, '', True)
evaluate(asterisk.statement, environment)
@classmethod
def _automaticVariableName(cls, environment, prefix='', suffix='', startWithNumber=False):
number = 1 if startWithNumber else ''
variableName = lambda x: f"{prefix}{x}{suffix}"
while environment.findVariableScope(variableName(number)) is not None:
if number == '':
number = 1
else:
number += 1
if type(asterisk.iterator) == IdentifierNode:
del environment.scopes[-1][f"_{asterisk.iterator.identifier}"]
else:
del environment.scopes[-1]["_"]
return variableName(number)
@classmethod
def _listIteratorAsteriskEvaluator(cls, evaluatedIterator):
def evaluator(node, environment):
if evaluatedIterator.type == Type.LIST:
results = []
automaticVariableKey = cls._automaticNamedVariable(node.iterator, environment, "_")
automaticVariableValue = cls._automaticNamedVariable(node.iterator, environment, "__")
for i, v in enumerate(evaluatedIterator.value):
environment.scopes[-1][automaticVariableKey] = Value(Type.INTEGER, i + 1)
environment.scopes[-1][automaticVariableValue] = v
result = evaluate(node.statement, environment).value # TODO check if it isn't necessary to verify 'result' attr of EvaluatioNResult
if result is not None and result.type != Type.VOID:
results.append(result)
def evaluateAsteriskForList(asterisk, environment, list):
for i, v in enumerate(list.value):
if type(asterisk.iterator) == IdentifierNode:
environment.scopes[-1][f"_{asterisk.iterator.identifier}"] = Value(Type.INTEGER, i+1)
environment.scopes[-1][f"{asterisk.iterator.identifier}_"] = v
else:
environment.scopes[-1]["_"] = Value(Type.INTEGER, i+1)
environment.scopes[-1]["__"] = v
del environment.scopes[-1][automaticVariableKey]
del environment.scopes[-1][automaticVariableValue]
evaluate(asterisk.statement, environment)
return EvaluationResult.OK(Value(Type.LIST, results).decompose())
if type(asterisk.iterator) == IdentifierNode:
del environment.scopes[-1][f"_{asterisk.iterator.identifier}"]
del environment.scopes[-1][f"{asterisk.iterator.identifier}_"]
else:
del environment.scopes[-1]["_"]
del environment.scopes[-1]["__"]
return EvaluationResult.FAIL()
return evaluator
#
# def evaluateAsterisk(asterisk, environment):
# iterator = evaluate(asterisk.iterator, environment)
# if iterator.type == Type.INTEGER:
# evaluateAsteriskForNumber(asterisk, environment, iterator)
#
# if iterator.type == Type.LIST:
# evaluateAsteriskForList(asterisk, environment, iterator)
#
#
#
# def evaluateAsteriskForNumber(asterisk, environment, count):
# for i in range(count.value):
# if type(asterisk.iterator) == IdentifierNode:
# environment.scopes[-1][f"_{asterisk.iterator.identifier}"] = Value(Type.INTEGER, i+1)
# else:
# environment.scopes[-1]["_"] = Value(Type.INTEGER, i+1)
#
# evaluate(asterisk.statement, environment)
#
# if type(asterisk.iterator) == IdentifierNode:
# del environment.scopes[-1][f"_{asterisk.iterator.identifier}"]
# else:
# del environment.scopes[-1]["_"]
#
#
# def evaluateAsteriskForList(asterisk, environment, list):
# for i, v in enumerate(list.value):
# if type(asterisk.iterator) == IdentifierNode:
# environment.scopes[-1][f"_{asterisk.iterator.identifier}"] = Value(Type.INTEGER, i+1)
# environment.scopes[-1][f"{asterisk.iterator.identifier}_"] = v
# else:
# environment.scopes[-1]["_"] = Value(Type.INTEGER, i+1)
# environment.scopes[-1]["__"] = v
#
# evaluate(asterisk.statement, environment)
#
# if type(asterisk.iterator) == IdentifierNode:
# del environment.scopes[-1][f"_{asterisk.iterator.identifier}"]
# del environment.scopes[-1][f"{asterisk.iterator.identifier}_"]
# else:
# del environment.scopes[-1]["_"]
# del environment.scopes[-1]["__"]

4
smnp/runtime/evaluators/block.py
View File

@@ -5,9 +5,13 @@ class BlockEvaluator(Evaluator):
@classmethod
def evaluator(cls, node, environment):
environment.scopes.append({})
for child in node.children:
evaluate(child, environment)
environment.scopes.pop(-1)
#
# def evaluateBlock(block, environment):
# environment.scopes.append({})

5
smnp/runtime/evaluators/expression.py
View File

@@ -1,5 +1,6 @@
from smnp.ast.node.access import AccessNode
from smnp.ast.node.assignment import AssignmentNode
from smnp.ast.node.asterisk import AsteriskNode
from smnp.ast.node.identifier import IdentifierNode
from smnp.ast.node.integer import IntegerLiteralNode
from smnp.ast.node.invocation import FunctionCallNode
@@ -22,6 +23,7 @@ def expressionEvaluator(doAssert=False):
from smnp.runtime.evaluators.access import AccessEvaluator
from smnp.runtime.evaluators.assignment import AssignmentEvaluator
from smnp.runtime.evaluators.asterisk import AsteriskEvaluator
result = Evaluator.oneOf(
Evaluator.forNodes(FunctionCallEvaluator.evaluate, FunctionCallNode),
Evaluator.forNodes(StringEvaluator.evaluate, StringLiteralNode),
@@ -30,7 +32,8 @@ def expressionEvaluator(doAssert=False):
Evaluator.forNodes(IdentifierEvaluator.evaluate, IdentifierNode),
Evaluator.forNodes(ListEvaluator.evaluate, ListNode),
Evaluator.forNodes(AccessEvaluator.evaluate, AccessNode),
Evaluator.forNodes(AssignmentEvaluator.evaluate, AssignmentNode)
Evaluator.forNodes(AssignmentEvaluator.evaluate, AssignmentNode),
Evaluator.forNodes(AsteriskEvaluator.evaluate, AsteriskNode)
)(node, environment)
if doAssert and result.result and result.value.type == Type.VOID: