def parse(cls, branchNode: Iir, label: str) -> "IfBranch":
from pyGHDL.dom._Translate import (
GetSequentialStatementsFromChainedNodes,
GetExpressionFromNode,
)
condition = GetExpressionFromNode(nodes.Get_Condition(branchNode))
statementChain = nodes.Get_Sequential_Statement_Chain(branchNode)
statements = GetSequentialStatementsFromChainedNodes(statementChain, "if branch", label)
return cls(branchNode, condition, statements)
def parse(cls, ifNode: Iir, label: str) -> "IfStatement":
ifBranch = IfBranch.parse(ifNode, label)
elsifBranches = []
elseBranch = None
# WORKAROUND: Python 3.8 syntax
# elseClause = generateNode
# while (elseClause := nodes.Get_Generate_Else_Clause(elseClause)) != nodes.Null_Iir:
elseClause = nodes.Get_Else_Clause(ifNode)
while elseClause != nodes.Null_Iir:
condition = nodes.Get_Condition(elseClause)
if condition != nodes.Null_Iir:
elsifBranches.append(ElsifBranch.parse(elseClause, condition, label))
else:
elseBranch = ElseBranch.parse(elseClause, label)
break
elseClause = nodes.Get_Else_Clause(elseClause)
return cls(ifNode, ifBranch, elsifBranches, elseBranch, label)
def parse(cls, generateNode: Iir) -> "IfGenerateBranch":
from pyGHDL.dom._Translate import (
GetDeclaredItemsFromChainedNodes,
GetConcurrentStatementsFromChainedNodes,
GetExpressionFromNode,
)
condition = GetExpressionFromNode(nodes.Get_Condition(generateNode))
body = nodes.Get_Generate_Statement_Body(generateNode)
# TODO: alternative label
# alternativeLabelId = nodes.Get_Alternative_Label(body)
alternativeLabel = ""
declarationChain = nodes.Get_Declaration_Chain(body)
declaredItems = GetDeclaredItemsFromChainedNodes(declarationChain, "if-generate branch", alternativeLabel)
statementChain = nodes.Get_Concurrent_Statement_Chain(body)
statements = GetConcurrentStatementsFromChainedNodes(statementChain, "if-generate branch", alternativeLabel)
return cls(generateNode, condition, declaredItems, statements, alternativeLabel)