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from typing import List
from pydecor import export
from pyVHDLModel.VHDLModel import Constraint, Direction, Expression, SubTypeOrSymbol
from pyGHDL.libghdl import utils, name_table
from pyGHDL.libghdl.utils import flist_iter
from pyGHDL.libghdl.vhdl import nodes
from pyGHDL.dom._Utils import NodeToName, GetIirKindOfNode
from pyGHDL.dom.Common import DOMException
from pyGHDL.dom.Range import Range, RangeExpression
from pyGHDL.dom.Symbol import SimpleObjectSymbol, SimpleSubTypeSymbol, ConstrainedSubTypeSymbol
from pyGHDL.dom.Literal import IntegerLiteral, CharacterLiteral, FloatingPointLiteral
from pyGHDL.dom.Expression import SubtractionExpression, AdditionExpression, MultiplyExpression, DivisionExpression, InverseExpression, ExponentiationExpression
__all__ = []
@export
def GetSubtypeIndicationFromNode(node, entity: str, name: str) -> SubTypeOrSymbol:
subTypeIndication = nodes.Get_Subtype_Indication(node)
subTypeKind = GetIirKindOfNode(subTypeIndication)
if (subTypeKind == nodes.Iir_Kind.Simple_Name):
subTypeName = NodeToName(subTypeIndication)
subType = SimpleSubTypeSymbol(subTypeName)
elif (subTypeKind == nodes.Iir_Kind.Array_Subtype_Definition):
typeMark = nodes.Get_Subtype_Type_Mark(subTypeIndication)
typeMarkName = NodeToName(typeMark)
constraints = GetArrayConstraintsFromSubtypeIndication(subTypeIndication)
subType = ConstrainedSubTypeSymbol(typeMarkName, constraints)
elif (subTypeKind == nodes.Iir_Kind.Subtype_Definition):
raise DOMException(
"Unknown handling of subtype kind '{kind}' of subtype indication '{indication}' while parsing {entity} '{name}'.".format(
kind=subTypeKind, indication=subTypeIndication, entity=entity, name=name)
)
else:
raise DOMException(
"Unknown subtype kind '{kind}' of subtype indication '{indication}' while parsing {entity} '{name}'.".format(
kind=subTypeKind, indication=subTypeIndication, entity=entity, name=name)
)
return subType
@export
def GetArrayConstraintsFromSubtypeIndication(subTypeIndication) -> List[Constraint]:
constraints = []
for constraint in flist_iter(nodes.Get_Index_Constraint_List(subTypeIndication)):
constraintKind = GetIirKindOfNode(constraint)
if constraintKind == nodes.Iir_Kind.Range_Expression:
direction = nodes.Get_Direction(constraint)
leftBound = nodes.Get_Left_Limit_Expr(constraint)
rightBound = nodes.Get_Right_Limit_Expr(constraint)
r = Range(
GetExpressionFromNode(leftBound),
GetExpressionFromNode(rightBound),
Direction.DownTo if direction else Direction.To
)
constraints.append(RangeExpression(r))
elif constraintKind == nodes.Iir_Kind.Attribute_Name:
raise DOMException("[NOT IMPLEMENTED] Attribute name as range.")
elif constraintKind == nodes.Iir_Kind.Simple_Name:
raise DOMException("[NOT IMPLEMENTED] Subtype as range.")
else:
raise DOMException(
"Unknown constraint kind '{kind}' for constraint '{constraint}' in subtype indication '{indication}'.".format(
kind=constraintKind, constraint=constraint, indication=subTypeIndication)
)
return constraints
@export
def GetExpressionFromNode(node) -> Expression:
kind = GetIirKindOfNode(node)
if kind == nodes.Iir_Kind.Simple_Name:
name = NodeToName(node)
return SimpleObjectSymbol(name)
elif kind == nodes.Iir_Kind.Integer_Literal:
integerLiteralValue = nodes.Get_Value(node)
return IntegerLiteral(integerLiteralValue)
elif kind == nodes.Iir_Kind.Floating_Point_Literal:
fpLiteralValue = nodes.Get_Fp_Value(node)
return FloatingPointLiteral(fpLiteralValue)
elif kind == nodes.Iir_Kind.Character_Literal:
identifier = nodes.Get_Identifier(node)
characterLiteralValue = name_table.Get_Character(identifier)
return CharacterLiteral(characterLiteralValue)
elif kind == nodes.Iir_Kind.Negation_Operator:
operand = GetExpressionFromNode(nodes.Get_Operand(node))
return InverseExpression(operand)
elif kind == nodes.Iir_Kind.Addition_Operator:
left = GetExpressionFromNode(nodes.Get_Left(node))
right = GetExpressionFromNode(nodes.Get_Right(node))
return AdditionExpression(left, right)
elif kind == nodes.Iir_Kind.Substraction_Operator:
left = GetExpressionFromNode(nodes.Get_Left(node))
right = GetExpressionFromNode(nodes.Get_Right(node))
return SubtractionExpression(left, right)
elif kind == nodes.Iir_Kind.Multiplication_Operator:
left = GetExpressionFromNode(nodes.Get_Left(node))
right = GetExpressionFromNode(nodes.Get_Right(node))
return MultiplyExpression(left, right)
elif kind == nodes.Iir_Kind.Division_Operator:
left = GetExpressionFromNode(nodes.Get_Left(node))
right = GetExpressionFromNode(nodes.Get_Right(node))
return DivisionExpression(left, right)
elif kind == nodes.Iir_Kind.Exponentiation_Operator:
left = GetExpressionFromNode(nodes.Get_Left(node))
right = GetExpressionFromNode(nodes.Get_Right(node))
return ExponentiationExpression(left, right)
else:
raise DOMException(
"Unknown expression kind '{kindName}'({kind}) in expression '{expr}'.".format(
kind=kind, kindName=kind.name, expr=node)
)
# FIXME: rewrite to generator
@export
def GetGenericsFromChainedNodes(nodeChain):
result = []
for generic in utils.chain_iter(nodeChain):
kind = GetIirKindOfNode(generic)
if kind == nodes.Iir_Kind.Interface_Constant_Declaration:
from pyGHDL.dom.InterfaceItem import GenericConstantInterfaceItem
genericConstant = GenericConstantInterfaceItem.parse(generic)
result.append(genericConstant)
else:
raise DOMException(
"Unknown generic kind '{kindName}'({kind}) in generic '{generic}'.".format(
kind=kind, kindName=kind.name, generic=generic)
)
return result
# FIXME: rewrite to generator
@export
def GetPortsFromChainedNodes(nodeChain):
result = []
for port in utils.chain_iter(nodeChain):
kind = GetIirKindOfNode(port)
if kind == nodes.Iir_Kind.Interface_Signal_Declaration:
from pyGHDL.dom.InterfaceItem import PortSignalInterfaceItem
portSignal = PortSignalInterfaceItem.parse(port)
result.append(portSignal)
else:
raise DOMException(
"Unknown port kind '{kindName}'({kind}) in port '{port}'.".format(
kind=kind, kindName=kind.name, port=port)
)
return result
def GetDeclaredItemsFromChainedNodes(nodeChain, entity: str, name: str):
result = []
for item in utils.chain_iter(nodeChain):
kind = GetIirKindOfNode(item)
if kind == nodes.Iir_Kind.Constant_Declaration:
from pyGHDL.dom.Object import Constant
constantName = NodeToName(item)
subTypeIndication = GetSubtypeIndicationFromNode(item, "constant", constantName)
defaultExpression = GetExpressionFromNode(nodes.Get_Default_Value(item))
constant = Constant(constantName, subTypeIndication, defaultExpression)
result.append(constant)
elif kind == nodes.Iir_Kind.Signal_Declaration:
from pyGHDL.dom.Object import Signal
signalName = NodeToName(item)
subTypeIndication = GetSubtypeIndicationFromNode(item, "signal", signalName)
defaultExpression = GetExpressionFromNode(nodes.Get_Default_Value(item))
constant = Signal(signalName, subTypeIndication, defaultExpression)
result.append(constant)
elif kind == nodes.Iir_Kind.Anonymous_Type_Declaration:
typeName = NodeToName(item)
print("found type '{name}'".format(name=typeName))
elif kind == nodes.Iir_Kind.Subtype_Declaration:
subTypeName = NodeToName(item)
print("found subtype '{name}'".format(name=subTypeName))
elif kind == nodes.Iir_Kind.Function_Declaration:
functionName = NodeToName(item)
print("found function '{name}'".format(name=functionName))
elif kind == nodes.Iir_Kind.Function_Body:
# functionName = NodeToName(item)
print("found function body '{name}'".format(name="????"))
elif kind == nodes.Iir_Kind.Object_Alias_Declaration:
aliasName = NodeToName(item)
print("found alias '{name}'".format(name=aliasName))
else:
raise DOMException(
"Unknown declared item kind '{kindName}'({kind}) in {entity} '{name}'.".format(
kind=kind, kindName=kind.name, entity=entity, name=name)
)
return result
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