def parse(cls, node: Iir) -> "QualifiedExpression":
from pyGHDL.dom._Translate import GetExpressionFromNode, GetNameOfNode
typeMarkName = GetNameOfNode(nodes.Get_Type_Mark(node))
subtype = SimpleSubtypeSymbol(node, typeMarkName)
operand = GetExpressionFromNode(nodes.Get_Expression(node))
return cls(node, subtype, operand)
def parse(cls, attributeNode: Iir) -> "AttributeSpecification":
attributeDesignator = nodes.Get_Attribute_Designator(attributeNode)
attributeName = GetNameFromNode(attributeDesignator)
names = []
entityNameList = nodes.Get_Entity_Name_List(attributeNode)
for name in utils.flist_iter(entityNameList):
nameKind = GetIirKindOfNode(name)
if nameKind == nodes.Iir_Kind.Simple_Name:
names.append(SimpleName(name, GetNameOfNode(name)))
elif nameKind == nodes.Iir_Kind.Signature:
print(
"[NOT IMPLEMENTED] Signature name in attribute specifications."
)
else:
position = Position.parse(name)
raise DOMException(
"Unknown name kind '{kind}' in attribute specification '{attr}' at {file}:{line}:{column}."
.format(
kind=nameKind.name,
attr=attributeNode,
file=position.Filename,
line=position.Line,
column=position.Column,
))
entityClassToken = nodes.Get_Entity_Class(attributeNode)
try:
entityClass = _TOKEN_TRANSLATION[entityClassToken]
except KeyError:
position = Position.parse(attributeNode)
raise DOMException(
"Unknown token '{token}' in attribute specification for entity class '{entityClass}' at {file}:{line}:{column}."
.format(
token=entityClassToken.name,
entityClass=attributeNode,
file=position.Filename,
line=position.Line,
column=position.Column,
))
expression = GetExpressionFromNode(nodes.Get_Expression(attributeNode))
return cls(attributeNode, names, attributeName, entityClass,
expression)
def parse(cls, caseNode: Iir, label: str) -> "CaseStatement":
from pyGHDL.dom._Utils import GetIirKindOfNode
from pyGHDL.dom._Translate import (
GetExpressionFromNode,
GetRangeFromNode,
GetNameFromNode,
)
expression = GetExpressionFromNode(nodes.Get_Expression(caseNode))
cases = []
choices = None
alternative = nodes.Get_Case_Statement_Alternative_Chain(caseNode)
cNode = alternative
while alternative != nodes.Null_Iir:
choiceKind = GetIirKindOfNode(alternative)
sameAlternative = nodes.Get_Same_Alternative_Flag(alternative)
if choiceKind in (
nodes.Iir_Kind.Choice_By_Name,
nodes.Iir_Kind.Choice_By_Expression,
):
choiceExpression = GetExpressionFromNode(nodes.Get_Choice_Expression(alternative))
choice = IndexedChoice(alternative, choiceExpression)
if sameAlternative:
choices.append(choice)
alternative = nodes.Get_Chain(alternative)
continue
elif choiceKind is nodes.Iir_Kind.Choice_By_Range:
choiceRange = nodes.Get_Choice_Range(alternative)
choiceRangeKind = GetIirKindOfNode(choiceRange)
if choiceRangeKind == nodes.Iir_Kind.Range_Expression:
rng = GetRangeFromNode(choiceRange)
elif choiceRangeKind in (
nodes.Iir_Kind.Attribute_Name,
nodes.Iir_Kind.Parenthesis_Name,
):
rng = GetNameFromNode(choiceRange)
else:
pos = Position.parse(alternative)
raise DOMException(
"Unknown choice range kind '{kind}' in case statement at line {line}.".format(
kind=choiceRangeKind.name, line=pos.Line
)
)
choice = RangedChoice(alternative, rng)
if sameAlternative:
choices.append(choice)
alternative = nodes.Get_Chain(alternative)
continue
elif choiceKind is nodes.Iir_Kind.Choice_By_Others:
if choices is not None:
cases.append(Case.parse(alternative, choices, label))
choices = None
cases.append(OthersCase.parse(alternative, label))
alternative = nodes.Get_Chain(alternative)
cNode = alternative
continue
else:
pos = Position.parse(alternative)
raise DOMException(
"Unknown choice kind '{kind}' in case statement at line {line}.".format(
kind=choiceKind.name, line=pos.Line
)
)
if choices is not None:
cases.append(Case.parse(cNode, choices, label))
cNode = alternative
choices = [
choice,
]
alternative = nodes.Get_Chain(alternative)
if choices is not None:
cases.append(Case.parse(cNode, choices, label))
return cls(caseNode, label, expression, cases)
def parse(cls, node: Iir) -> "QualifiedExpressionAllocation":
from pyGHDL.dom._Translate import GetExpressionFromNode
expression = GetExpressionFromNode(nodes.Get_Expression(node))
return cls(node, expression)
def parse(cls, node: Iir) -> "ParenthesisExpression":
from pyGHDL.dom._Translate import GetExpressionFromNode
operand = GetExpressionFromNode(nodes.Get_Expression(node))
return cls(node, operand)