def stateVariableAssignment(cls, parserState: ParserState): token = parserState.Token errorMessage = "Expected ':=' or whitespace after type mark." if isinstance(token, CharacterToken): if (token == "\n"): parserState.NewBlock = TypeBlock(parserState.LastBlock, parserState.TokenMarker, endToken=token.PreviousToken, multiPart=True) parserState.NewToken = LinebreakToken(token) _ = LinebreakBlock(parserState.NewBlock, parserState.NewToken) parserState.TokenMarker = None parserState.NextState = cls.stateWhitespace5 parserState.PushState = LinebreakBlock.stateLinebreak return elif (token == "-"): parserState.NewBlock = TypeBlock(parserState.LastBlock, parserState.TokenMarker, endToken=token.PreviousToken, multiPart=True) parserState.TokenMarker = None parserState.NextState = cls.stateWhitespace5 parserState.PushState = SingleLineCommentBlock.statePossibleCommentStart parserState.TokenMarker = token return elif (token == "/"): parserState.NewBlock = TypeBlock(parserState.LastBlock, parserState.TokenMarker, endToken=token.PreviousToken, multiPart=True) parserState.TokenMarker = None parserState.NextState = cls.stateWhitespace5 parserState.PushState = MultiLineCommentBlock.statePossibleCommentStart parserState.TokenMarker = token return elif isinstance(token, SpaceToken): parserState.NextState = cls.stateWhitespace5 return raise TokenParserException(errorMessage, token)
def stateWhitespace3(cls, parserState: ParserState): token = parserState.Token if isinstance(token, LinebreakToken): if (not (isinstance(parserState.LastBlock, CommentBlock) and isinstance(parserState.LastBlock.StartToken, MultiLineCommentToken))): parserState.NewBlock = cls(parserState.LastBlock, parserState.TokenMarker, endToken=token.PreviousToken, multiPart=True) _ = LinebreakBlock(parserState.NewBlock, token) else: parserState.NewBlock = LinebreakBlock(parserState.LastBlock, token) parserState.TokenMarker = None return elif isinstance(token, CommentToken): parserState.NewBlock = cls(parserState.LastBlock, parserState.TokenMarker, endToken=token.PreviousToken, multiPart=True) _ = CommentBlock(parserState.NewBlock, token) parserState.TokenMarker = None return elif (isinstance(token, IndentationToken) and isinstance(token.PreviousToken, (LinebreakToken, SingleLineCommentToken))): return elif (isinstance(token, SpaceToken) and (isinstance(parserState.LastBlock, CommentBlock) and isinstance(parserState.LastBlock.StartToken, MultiLineCommentToken))): parserState.NewToken = BoundaryToken(token) parserState.NewBlock = WhitespaceBlock(parserState.LastBlock, parserState.NewToken) parserState.TokenMarker = None return else: parserState.NewBlock = cls(parserState.LastBlock, parserState.TokenMarker, endToken=token.PreviousToken) parserState.NextState = LoopBlock.stateLoopKeyword parserState.PushState = ExpressionBlockEndedByLoop.stateExpression parserState.PushState = ExpressionBlockEndedByLoopORToORDownto.stateExpression parserState.TokenMarker = parserState.Token parserState.NextState(parserState) return
def stateGenerateKeyword(cls, parserState: ParserState): token = parserState.Token errorMessage = "Expected whitespace after keyword GENERATE." if isinstance(token, CharacterToken): if (token == "\n"): parserState.NewBlock = CaseBlock(parserState.LastBlock, parserState.TokenMarker, endToken=token.PreviousToken, multiPart=True) parserState.NewToken = LinebreakToken(token) _ = LinebreakBlock(parserState.NewBlock, parserState.NewToken) parserState.TokenMarker = None parserState.NextState = cls.stateWhitespace1 parserState.PushState = LinebreakBlock.stateLinebreak return elif (token == "-"): parserState.NewBlock = CaseBlock(parserState.LastBlock, parserState.TokenMarker, endToken=token.PreviousToken, multiPart=True) parserState.TokenMarker = None parserState.NextState = cls.stateWhitespace1 parserState.PushState = SingleLineCommentBlock.statePossibleCommentStart parserState.TokenMarker = token return elif (token == "/"): parserState.NewBlock = CaseBlock(parserState.LastBlock, parserState.TokenMarker, endToken=token.PreviousToken, multiPart=True) parserState.TokenMarker = None parserState.NextState = cls.stateWhitespace1 parserState.PushState = MultiLineCommentBlock.statePossibleCommentStart parserState.TokenMarker = token return elif isinstance(token, SpaceToken): parserState.NewToken = BoundaryToken(token) parserState.NextState = cls.stateWhitespace1 return raise BlockParserException(errorMessage, token)
def stateExpressionEnd(cls, parserState: ParserState):
token = parserState.Token
errorMessage = "Expected ';'."
if isinstance(token, CharacterToken):
if (token == ";"):
parserState.NewToken = EndToken(token)
parserState.NewBlock = TypeBlock(parserState.LastBlock,
parserState.TokenMarker,
endToken=parserState.NewToken)
parserState.Pop()
return
elif (token == "-"):
parserState.NewBlock = TypeBlock(parserState.LastBlock,
parserState.TokenMarker,
endToken=token.PreviousToken,
multiPart=True)
parserState.TokenMarker = None
parserState.PushState = SingleLineCommentBlock.statePossibleCommentStart
parserState.TokenMarker = token
return
elif (token == "/"):
parserState.NewBlock = TypeBlock(parserState.LastBlock,
parserState.TokenMarker,
endToken=token.PreviousToken,
multiPart=True)
parserState.TokenMarker = None
parserState.PushState = MultiLineCommentBlock.statePossibleCommentStart
parserState.TokenMarker = token
return
raise TokenParserException(errorMessage, token)
def stateWhitespace1(cls, parserState: ParserState):
token = parserState.Token
errorMessage = "Expected '(' after keyword GENERIC."
if isinstance(token, CharacterToken):
if (token == "("):
parserState.NewToken = BoundaryToken(token)
parserState.NewBlock = OpenBlock(parserState.LastBlock,
parserState.TokenMarker,
endToken=parserState.NewToken)
parserState.NextState = CloseBlock.stateClosingParenthesis
parserState.PushState = OpenBlock.stateOpeningParenthesis
parserState.Counter = 1
return
elif (token == "\n"):
parserState.NewToken = LinebreakToken(token)
if (not isinstance(parserState.LastBlock,
MultiLineCommentBlock)):
parserState.NewBlock = OpenBlock(
parserState.LastBlock,
parserState.TokenMarker,
endToken=parserState.NewToken.PreviousToken,
multiPart=True)
_ = LinebreakBlock(parserState.NewBlock,
parserState.NewToken)
else:
parserState.NewBlock = LinebreakBlock(
parserState.LastBlock, parserState.NewToken)
parserState.TokenMarker = None
parserState.NextState = cls.stateWhitespace1
parserState.PushState = LinebreakBlock.stateLinebreak
return
elif (token == "-"):
parserState.NewBlock = OpenBlock(parserState.LastBlock,
parserState.TokenMarker,
endToken=token.PreviousToken,
multiPart=True)
parserState.TokenMarker = None
parserState.NextState = cls.stateWhitespace1
parserState.PushState = SingleLineCommentBlock.statePossibleCommentStart
parserState.TokenMarker = token
return
elif (token == "/"):
parserState.NewBlock = OpenBlock(parserState.LastBlock,
parserState.TokenMarker,
endToken=token.PreviousToken,
multiPart=True)
parserState.TokenMarker = None
parserState.NextState = cls.stateWhitespace1
parserState.PushState = MultiLineCommentBlock.statePossibleCommentStart
parserState.TokenMarker = token
return
elif (isinstance(token, SpaceToken)
and isinstance(parserState.LastBlock, MultiLineCommentBlock)):
parserState.NewToken = BoundaryToken(token)
parserState.NewBlock = WhitespaceBlock(parserState.LastBlock,
parserState.NewToken)
parserState.TokenMarker = None
return
raise TokenParserException(errorMessage, token)
def stateTypeName(cls, parserState: ParserState): token = parserState.Token errorMessage = "Expected ';' after library name." if isinstance(token, CharacterToken): if (token == ":"): parserState.NewToken = BoundaryToken(token) parserState.NextState = cls.stateColon1 return elif (token == "\n"): parserState.NewBlock = TypeBlock(parserState.LastBlock, parserState.TokenMarker, endToken=token.PreviousToken, multiPart=True) parserState.NewToken = LinebreakToken(token) _ = LinebreakBlock(parserState.NewBlock, parserState.NewToken) parserState.TokenMarker = None parserState.NextState = cls.stateWhitespace2 parserState.PushState = LinebreakBlock.stateLinebreak return elif (token == "-"): parserState.NewBlock = TypeBlock(parserState.LastBlock, parserState.TokenMarker, endToken=token.PreviousToken, multiPart=True) parserState.TokenMarker = None parserState.NextState = cls.stateWhitespace2 parserState.PushState = SingleLineCommentBlock.statePossibleCommentStart parserState.TokenMarker = token return elif (token == "/"): parserState.NewBlock = TypeBlock(parserState.LastBlock, parserState.TokenMarker, endToken=token.PreviousToken, multiPart=True) parserState.TokenMarker = None parserState.NextState = cls.stateWhitespace2 parserState.PushState = MultiLineCommentBlock.statePossibleCommentStart parserState.TokenMarker = token return elif isinstance(token, SpaceToken): parserState.NextState = cls.stateWhitespace2 return raise TokenParserException(errorMessage, token)
def stateItemDelimiter(cls, parserState: ParserState):
token = parserState.Token
if isinstance(token, StringToken):
if (token <= "signal"):
parserState.NewToken = SignalKeyword(token)
parserState.PushState = PortListInterfaceSignalBlock.stateSignalKeyword
parserState.TokenMarker = parserState.NewToken
return
else:
parserState.NewToken = IdentifierToken(token)
parserState.PushState = PortListInterfaceSignalBlock.stateObjectName
parserState.TokenMarker = parserState.NewToken
return
elif isinstance(token, ExtendedIdentifier):
parserState.NextState = PortListInterfaceSignalBlock.stateObjectName
return
elif isinstance(token, SpaceToken):
parserState.NextState = OpenBlock.stateOpeningParenthesis
return
elif isinstance(token, LinebreakToken):
parserState.NewBlock = LinebreakBlock(parserState.LastBlock, token)
parserState.TokenMarker = token
parserState.NextState = OpenBlock.stateOpeningParenthesis
return
elif isinstance(token, CommentToken):
parserState.NewBlock = cls(parserState.LastBlock,
parserState.TokenMarker,
endToken=token.PreviousToken,
multiPart=True)
_ = CommentBlock(parserState.NewBlock, token)
parserState.TokenMarker = None
# parserState.NextState = cls.stateWhitespace1
return
raise TokenParserException("Expected port name (identifier).", token)
def stateIfKeyword(cls, parserState: ParserState):
token = parserState.Token
if (isinstance(token, CharacterToken) and (token == "(")):
parserState.NewToken = BoundaryToken(token)
parserState.NewBlock = cls(parserState.LastBlock, parserState.TokenMarker, endToken=parserState.NewToken.PreviousToken)
parserState.TokenMarker = parserState.NewToken
parserState.NextState = ThenBlock.stateThenKeyword
parserState.PushState = ExpressionBlockEndedByThen.stateExpression
return
elif isinstance(token, SpaceToken):
parserState.NewToken = BoundaryToken(token)
parserState.NextState = cls.stateWhitespace1
return
elif isinstance(token, (LinebreakToken, CommentToken)):
block = LinebreakBlock if isinstance(token, LinebreakToken) else CommentBlock
parserState.NewBlock = cls(parserState.LastBlock, parserState.TokenMarker, endToken=token.PreviousToken, multiPart=True)
_ = block(parserState.NewBlock, token)
parserState.TokenMarker = None
parserState.NextState = cls.stateWhitespace1
return
else:
parserState.NewBlock = cls(parserState.LastBlock, parserState.TokenMarker, endToken=token.PreviousToken)
parserState.NextState = ThenBlock.stateThenKeyword
parserState.PushState = ExpressionBlockEndedByThen.stateExpression
parserState.TokenMarker = parserState.Token
parserState.NextState(parserState)
return
def stateWhitespace2(cls, parserState: ParserState):
token = parserState.Token
errorMessage = "Expected attribute name (identifier)."
if isinstance(token, CharacterToken):
if (token == ":"):
parserState.NewToken = BoundaryToken(token)
parserState.NextState = cls.stateColon1
return
if (token == "\n"):
parserState.NewToken = LinebreakToken(token)
if (not isinstance(parserState.LastBlock,
MultiLineCommentBlock)):
parserState.NewBlock = AttributeDeclarationBlock(
parserState.LastBlock,
parserState.TokenMarker,
endToken=parserState.NewToken.PreviousToken,
multiPart=True)
_ = LinebreakBlock(parserState.NewBlock,
parserState.NewToken)
else:
parserState.NewBlock = LinebreakBlock(
parserState.LastBlock, parserState.NewToken)
parserState.TokenMarker = None
parserState.PushState = LinebreakBlock.stateLinebreak
return
elif (token == "-"):
parserState.NewBlock = AttributeDeclarationBlock(
parserState.LastBlock,
parserState.TokenMarker,
endToken=token.PreviousToken,
multiPart=True)
parserState.TokenMarker = None
parserState.PushState = SingleLineCommentBlock.statePossibleCommentStart
parserState.TokenMarker = token
return
elif (token == "/"):
parserState.NewBlock = AttributeDeclarationBlock(
parserState.LastBlock,
parserState.TokenMarker,
endToken=token.PreviousToken,
multiPart=True)
parserState.TokenMarker = None
parserState.PushState = MultiLineCommentBlock.statePossibleCommentStart
parserState.TokenMarker = token
return
elif isinstance(token, WordToken):
parserState.NewToken = IdentifierToken(token)
parserState.NextState = cls.stateColon1()
return
elif (isinstance(token, SpaceToken)
and isinstance(parserState.LastBlock, MultiLineCommentBlock)):
parserState.NewToken = BoundaryToken(token)
parserState.NewBlock = WhitespaceBlock(parserState.LastBlock,
parserState.NewToken)
parserState.TokenMarker = None
return
raise TokenParserException(errorMessage, token)
def stateWhitespace2(cls, parserState: ParserState):
token = parserState.Token
errorMessage = "Expected keyword IS after generate name."
if isinstance(token, CharacterToken):
if (token == "\n"):
parserState.NewToken = LinebreakToken(token)
if (not isinstance(parserState.LastBlock,
MultiLineCommentBlock)):
parserState.NewBlock = ElseGenerateBlock(
parserState.LastBlock,
parserState.TokenMarker,
endToken=parserState.NewToken.PreviousToken,
multiPart=True)
_ = LinebreakBlock(parserState.NewBlock,
parserState.NewToken)
else:
parserState.NewBlock = LinebreakBlock(
parserState.LastBlock, parserState.NewToken)
parserState.TokenMarker = None
parserState.PushState = LinebreakBlock.stateLinebreak
return
elif (token == "-"):
parserState.NewBlock = ElseGenerateBlock(
parserState.LastBlock,
parserState.TokenMarker,
endToken=token.PreviousToken,
multiPart=True)
parserState.TokenMarker = None
parserState.PushState = SingleLineCommentBlock.statePossibleCommentStart
parserState.TokenMarker = token
return
elif (token == "/"):
parserState.NewBlock = ElseGenerateBlock(
parserState.LastBlock,
parserState.TokenMarker,
endToken=token.PreviousToken,
multiPart=True)
parserState.TokenMarker = None
parserState.PushState = MultiLineCommentBlock.statePossibleCommentStart
parserState.TokenMarker = token
return
elif (isinstance(token, StringToken) and (token <= "is")):
parserState.NewToken = IsKeyword(token)
parserState.NewBlock = ElseGenerateBlock(
parserState.LastBlock,
parserState.TokenMarker,
endToken=parserState.NewToken)
parserState.NextState = cls.stateDeclarativeRegion
return
elif (isinstance(token, SpaceToken)
and isinstance(parserState.LastBlock, MultiLineCommentBlock)):
parserState.NewToken = BoundaryToken(token)
parserState.NewBlock = WhitespaceBlock(parserState.LastBlock,
parserState.NewToken)
parserState.TokenMarker = None
return
raise TokenParserException(errorMessage, token)
def stateWhitespace2(cls, parserState: ParserState):
token = parserState.Token
errorMessage = "Expected ';'."
if isinstance(token, CharacterToken):
if (token == ";"):
parserState.NewToken = EndToken(token)
parserState.NewBlock = EntityInstantiationBlock(
parserState.LastBlock,
parserState.TokenMarker,
endToken=parserState.NewToken)
parserState.Pop()
return
elif (token == "\n"):
parserState.NewToken = LinebreakToken(token)
if (not isinstance(parserState.LastBlock,
MultiLineCommentBlock)):
parserState.NewBlock = EntityInstantiationBlock(
parserState.LastBlock,
parserState.TokenMarker,
endToken=parserState.NewToken.PreviousToken,
multiPart=True)
_ = LinebreakBlock(parserState.NewBlock,
parserState.NewToken)
else:
parserState.NewBlock = LinebreakBlock(
parserState.LastBlock, parserState.NewToken)
parserState.TokenMarker = None
parserState.PushState = LinebreakBlock.stateLinebreak
return
elif (token == "-"):
parserState.NewBlock = EntityInstantiationBlock(
parserState.LastBlock,
parserState.TokenMarker,
endToken=token.PreviousToken,
multiPart=True)
parserState.TokenMarker = None
parserState.PushState = SingleLineCommentBlock.statePossibleCommentStart
parserState.TokenMarker = token
return
elif (token == "/"):
parserState.NewBlock = EntityInstantiationBlock(
parserState.LastBlock,
parserState.TokenMarker,
endToken=token.PreviousToken,
multiPart=True)
parserState.TokenMarker = None
parserState.PushState = MultiLineCommentBlock.statePossibleCommentStart
parserState.TokenMarker = token
return
elif (isinstance(token, SpaceToken)
and isinstance(parserState.LastBlock, MultiLineCommentBlock)):
parserState.NewToken = BoundaryToken(token)
parserState.NewBlock = WhitespaceBlock(parserState.LastBlock,
parserState.NewToken)
parserState.TokenMarker = None
return
raise TokenParserException(errorMessage, token)
def stateWhitespace4(cls, parserState: ParserState):
token = parserState.Token
errorMessage = "Expected ':=' after type mark."
if isinstance(token, CharacterToken):
if (token == ":"):
parserState.NewToken = BoundaryToken(token)
parserState.NextState = cls.statePossibleVariableAssignment
return
elif (token == "\n"):
parserState.NewToken = LinebreakToken(token)
if (not isinstance(parserState.LastBlock,
MultiLineCommentBlock)):
parserState.NewBlock = AttributeSpecificationBlock(
parserState.LastBlock,
parserState.TokenMarker,
endToken=parserState.NewToken.PreviousToken,
multiPart=True)
_ = LinebreakBlock(parserState.NewBlock,
parserState.NewToken)
else:
parserState.NewBlock = LinebreakBlock(
parserState.LastBlock, parserState.NewToken)
parserState.TokenMarker = None
parserState.PushState = LinebreakBlock.stateLinebreak
return
elif (token == "-"):
parserState.NewBlock = AttributeSpecificationBlock(
parserState.LastBlock,
parserState.TokenMarker,
endToken=token.PreviousToken,
multiPart=True)
parserState.TokenMarker = None
parserState.PushState = SingleLineCommentBlock.statePossibleCommentStart
parserState.TokenMarker = token
return
elif (token == "/"):
parserState.NewBlock = AttributeSpecificationBlock(
parserState.LastBlock,
parserState.TokenMarker,
endToken=token.PreviousToken,
multiPart=True)
parserState.TokenMarker = None
parserState.PushState = MultiLineCommentBlock.statePossibleCommentStart
parserState.TokenMarker = token
return
elif (isinstance(token, SpaceToken)
and isinstance(parserState.LastBlock, MultiLineCommentBlock)):
parserState.NewToken = BoundaryToken(token)
parserState.NewBlock = WhitespaceBlock(parserState.LastBlock,
parserState.NewToken)
parserState.TokenMarker = None
return
raise TokenParserException(errorMessage, token)
def stateItemDelimiter(cls, parserState: ParserState):
token = parserState.Token
if isinstance(token, WordToken):
if (token <= "constant"):
parserState.NewToken = ConstantKeyword(token)
parserState.PushState = GenericListInterfaceConstantBlock.stateConstantKeyword
parserState.TokenMarker = parserState.NewToken
return
elif (token <= "type"):
parserState.NewToken = TypeKeyword(token)
parserState.PushState = GenericListInterfaceTypeBlock.stateTypeKeyword
parserState.TokenMarker = parserState.NewToken
return
elif (token <= "procedure"):
raise NotImplementedError(
"Generic procedures are not supported.")
elif (token <= "function"):
raise NotImplementedError(
"Generic functions are not supported.")
elif (token <= "impure"):
raise NotImplementedError(
"Generic impure functions are not supported.")
elif (token <= "pure"):
raise NotImplementedError(
"Generic pure functions are not supported.")
else:
parserState.NewToken = IdentifierToken(token)
parserState.PushState = GenericListInterfaceConstantBlock.stateObjectName
parserState.TokenMarker = parserState.NewToken
return
elif isinstance(token, ExtendedIdentifier):
parserState.NextState = GenericListInterfaceConstantBlock.stateObjectName
return
elif isinstance(token, SpaceToken):
parserState.NextState = OpenBlock.stateOpeningParenthesis
return
elif isinstance(token, LinebreakToken):
parserState.NewBlock = LinebreakBlock(parserState.LastBlock, token)
parserState.TokenMarker = token
parserState.NextState = OpenBlock.stateOpeningParenthesis
return
elif isinstance(token, CommentToken):
parserState.NewBlock = cls(parserState.LastBlock,
parserState.TokenMarker,
endToken=token.PreviousToken,
multiPart=True)
_ = CommentBlock(parserState.NewBlock, token)
parserState.TokenMarker = None
# parserState.NextState = cls.stateWhitespace1
return
raise BlockParserException("Expected generic name (identifier).",
token)
def stateOpeningParenthesis(cls, parserState: ParserState):
token = parserState.Token
if isinstance(token, StringToken):
if (token <= "constant"):
parserState.NewToken = ConstantKeyword(token)
parserState.NextState = DelimiterBlock.stateItemDelimiter
parserState.PushState = ParameterListInterfaceConstantBlock.stateConstantKeyword
parserState.TokenMarker = parserState.NewToken
return
elif (token <= "variable"):
parserState.NewToken = VariableKeyword(token)
parserState.NextState = DelimiterBlock.stateItemDelimiter
parserState.PushState = ParameterListInterfaceVariableBlock.stateVariableKeyword
parserState.TokenMarker = parserState.NewToken
return
elif (token <= "signal"):
parserState.NewToken = SignalKeyword(token)
parserState.NextState = DelimiterBlock.stateItemDelimiter
parserState.PushState = ParameterListInterfaceSignalBlock.stateSignalKeyword
parserState.TokenMarker = parserState.NewToken
return
else:
parserState.NewToken = IdentifierToken(token)
parserState.PushState = ParameterListInterfaceConstantBlock.stateObjectName
parserState.TokenMarker = parserState.NewToken
return
elif isinstance(token, ExtendedIdentifier):
parserState.NextState = ParameterListInterfaceConstantBlock.stateObjectName
return
elif isinstance(token, SpaceToken):
blockType = IndentationBlock if isinstance(
token, IndentationToken) else WhitespaceBlock
parserState.NewBlock = blockType(parserState.LastBlock, token)
return
elif isinstance(token, LinebreakToken):
parserState.NewBlock = LinebreakBlock(parserState.LastBlock, token)
parserState.TokenMarker = token
return
elif isinstance(token, CommentToken):
parserState.NewBlock = cls(parserState.LastBlock,
parserState.TokenMarker,
endToken=token.PreviousToken,
multiPart=True)
_ = CommentBlock(parserState.NewBlock, token)
parserState.TokenMarker = None
return
raise TokenParserException(
"Expected interface element name (identifier).", token)
def stateDeclarativeRegion(cls, parserState: ParserState):
errorMessage = "Expected one of these keywords: generic, port, begin, end."
token = parserState.Token
if isinstance(parserState.Token, CharacterToken):
if (token == "\n"):
parserState.NewToken = LinebreakToken(token)
parserState.NewBlock = LinebreakBlock(parserState.LastBlock,
parserState.NewToken)
parserState.TokenMarker = parserState.NewToken
return
elif (token == "-"):
parserState.PushState = SingleLineCommentBlock.statePossibleCommentStart
parserState.TokenMarker = token
return
elif (token == "/"):
parserState.PushState = MultiLineCommentBlock.statePossibleCommentStart
parserState.TokenMarker = token
return
elif isinstance(token, SpaceToken):
parserState.NewToken = IndentationToken(token)
parserState.NewBlock = IndentationBlock(parserState.LastBlock,
parserState.NewToken)
return
elif isinstance(token, StringToken):
keyword = token.Value.lower()
if (keyword == "generic"):
newToken = GenericKeyword(token)
parserState.PushState = GenericList.OpenBlock.stateGenericKeyword
elif (keyword == "port"):
newToken = PortKeyword(token)
parserState.PushState = PortList.OpenBlock.statePortKeyword
elif (keyword == "end"):
newToken = EndKeyword(token)
parserState.NextState = EndGenerateBlock.stateEndKeyword
elif (keyword == "begin"):
parserState.NewToken = BeginKeyword(token)
parserState.NewBlock = ElseGenerateBeginBlock(
parserState.LastBlock, parserState.NewToken)
parserState.NextState = ElseGenerateBeginBlock.stateBeginKeyword
return
else:
raise TokenParserException(errorMessage, token)
parserState.NewToken = newToken
parserState.TokenMarker = newToken
return
raise TokenParserException(errorMessage, token)
def stateColon1(cls, parserState: ParserState):
token = parserState.Token
errorMessage = "Expected type mark or whitespace after ':'."
if isinstance(token, CharacterToken):
if (token == "\n"):
parserState.NewBlock = AttributeDeclarationBlock(
parserState.LastBlock,
parserState.TokenMarker,
endToken=token.PreviousToken,
multiPart=True)
parserState.NewToken = LinebreakToken(token)
_ = LinebreakBlock(parserState.NewBlock, parserState.NewToken)
parserState.TokenMarker = None
parserState.NextState = cls.stateWhitespace3
parserState.PushState = LinebreakBlock.stateLinebreak
return
elif (token == "-"):
parserState.NewBlock = AttributeDeclarationBlock(
parserState.LastBlock,
parserState.TokenMarker,
endToken=token.PreviousToken,
multiPart=True)
parserState.TokenMarker = None
parserState.NextState = cls.stateWhitespace3
parserState.PushState = SingleLineCommentBlock.statePossibleCommentStart
parserState.TokenMarker = token
return
elif (token == "/"):
parserState.NewBlock = AttributeDeclarationBlock(
parserState.LastBlock,
parserState.TokenMarker,
endToken=token.PreviousToken,
multiPart=True)
parserState.TokenMarker = None
parserState.NextState = cls.stateWhitespace3
parserState.PushState = MultiLineCommentBlock.statePossibleCommentStart
parserState.TokenMarker = token
return
elif isinstance(token, SpaceToken):
parserState.NewToken = BoundaryToken(token)
parserState.NextState = cls.stateWhitespace3
return
elif isinstance(token, WordToken):
parserState.NewToken = IdentifierToken(token)
parserState.NextState = cls.stateTypeMarkName
return
raise TokenParserException(errorMessage, token)
def stateDeclarativeRegion(cls, parserState: ParserState):
token = parserState.Token
if isinstance(token, SpaceToken):
blockType = IndentationBlock if isinstance(token, IndentationToken) else WhitespaceBlock
parserState.NewBlock = blockType(parserState.LastBlock, token)
return
elif isinstance(token, (LinebreakToken, CommentToken)):
block = LinebreakBlock if isinstance(token, LinebreakToken) else CommentBlock
parserState.NewBlock = block(parserState.LastBlock, token)
parserState.TokenMarker = None
return
elif isinstance(token, WordToken):
tokenValue = token.Value.lower()
for keyword in cls.KEYWORDS:
if (tokenValue == keyword.__KEYWORD__):
newToken = keyword(token)
parserState.PushState = cls.KEYWORDS[keyword]
parserState.NewToken = newToken
parserState.TokenMarker = newToken
return
if (tokenValue == "end"):
parserState.NewToken = EndKeyword(token)
parserState.TokenMarker = parserState.NewToken
parserState.NextState = EndBlock.stateEndKeyword
return
raise BlockParserException(
"Expected one of these keywords: END, {keywords}. Found: '{tokenValue}'.".format(
keywords=", ".join(
[kw.__KEYWORD__.upper() for kw in cls.KEYWORDS]
),
tokenValue=token.Value
), token)
def stateWhitespace3(cls, parserState: ParserState): token = parserState.Token if (isinstance(token, CharacterToken) and (token == ";")): parserState.NewToken = EndToken(token) parserState.NewBlock = EndBlock(parserState.LastBlock, parserState.TokenMarker, endToken=parserState.NewToken.PreviousToken) parserState.Pop() return elif isinstance(token, LinebreakToken): if (not (isinstance(parserState.LastBlock, CommentBlock) and isinstance(parserState.LastBlock.StartToken, MultiLineCommentToken))): parserState.NewBlock = cls(parserState.LastBlock, parserState.TokenMarker, endToken=token.PreviousToken, multiPart=True) _ = LinebreakBlock(parserState.NewBlock, token) else: parserState.NewBlock = LinebreakBlock(parserState.LastBlock, token) parserState.TokenMarker = None return elif isinstance(token, CommentToken): parserState.NewBlock = cls(parserState.LastBlock, parserState.TokenMarker, endToken=token.PreviousToken, multiPart=True) _ = CommentBlock(parserState.NewBlock, token) parserState.TokenMarker = None return elif (isinstance(token, IndentationToken) and isinstance(token.PreviousToken, (LinebreakToken, SingleLineCommentToken))): return elif (isinstance(token, SpaceToken) and ( isinstance(parserState.LastBlock, CommentBlock) and isinstance(parserState.LastBlock.StartToken, MultiLineCommentToken))): parserState.NewToken = BoundaryToken(token) parserState.NewBlock = WhitespaceBlock(parserState.LastBlock, parserState.NewToken) parserState.TokenMarker = None return else: parserState.NewBlock = cls(parserState.LastBlock, parserState.TokenMarker, endToken=token.PreviousToken) parserState.NextState = EndBlock.stateError parserState.PushState = ExitConditionBlock.stateExpression parserState.TokenMarker = parserState.Token parserState.NextState(parserState) return
def stateWhenKeyword(cls, parserState: ParserState):
token = parserState.Token
if isinstance(token, CharacterToken):
if (token == ";"):
parserState.NewToken = EndToken(token)
parserState.NewBlock = EndBlock(parserState.LastBlock, parserState.TokenMarker, endToken=parserState.NewToken.PreviousToken)
parserState.Pop()
return
elif (token == "("):
parserState.NewToken = BoundaryToken(token)
parserState.NewBlock = cls(parserState.LastBlock, parserState.TokenMarker, endToken=parserState.NewToken.PreviousToken)
parserState.TokenMarker = parserState.NewToken
parserState.NextState = EndBlock.stateError
parserState.PushState = ExitConditionBlock.stateExpression
return
elif isinstance(token, SpaceToken):
parserState.NewToken = BoundaryToken(token)
parserState.NextState = cls.stateWhitespace3
return
elif isinstance(token, (LinebreakToken, CommentToken)):
block = LinebreakBlock if isinstance(token, LinebreakToken) else CommentBlock
parserState.NewBlock = cls(parserState.LastBlock, parserState.TokenMarker, endToken=token.PreviousToken, multiPart=True)
_ = block(parserState.NewBlock, token)
parserState.TokenMarker = None
parserState.NextState = cls.stateWhitespace3
return
raise TokenParserException("Expected ';' or whitespace after keyword RETURN.", token)
def stateInKeyword(cls, parserState: ParserState):
token = parserState.Token
if (isinstance(token, CharacterToken) and (token == "(")):
parserState.NewToken = BoundaryToken(token)
parserState.NewBlock = cls(
parserState.LastBlock,
parserState.TokenMarker,
endToken=parserState.NewToken.PreviousToken)
parserState.TokenMarker = parserState.NewToken
parserState.NextState = LoopBlock.stateSequentialRegion
parserState.PushState = ExpressionBlockEndedByLoopORToORDownto.stateExpression
return
elif isinstance(token, SpaceToken):
parserState.NewToken = BoundaryToken(token)
parserState.NextState = cls.stateWhitespace3
return
elif isinstance(token, (LinebreakToken, CommentToken)):
block = LinebreakBlock if isinstance(
token, LinebreakToken) else CommentBlock
parserState.NewBlock = cls(parserState.LastBlock,
parserState.TokenMarker,
endToken=token.PreviousToken,
multiPart=True)
_ = block(parserState.NewBlock, token)
parserState.TokenMarker = None
parserState.NextState = cls.stateWhitespace3
return
raise TokenParserException(
"Expected '(' or whitespace after keyword IN.", token)
def stateParameterKeyword(cls, parserState: ParserState):
token = parserState.Token
if (isinstance(token, CharacterToken) and (token == "(")):
parserState.NewToken = BoundaryToken(token)
parserState.NewBlock = cls(parserState.LastBlock,
parserState.TokenMarker,
endToken=parserState.NewToken)
parserState.NextState = CloseBlock.stateClosingParenthesis
parserState.PushState = cls.stateOpeningParenthesis
parserState.Counter = 1
return
elif isinstance(token, SpaceToken):
parserState.NextState = cls.stateWhitespace1
return
elif isinstance(token, (LinebreakToken, CommentToken)):
block = LinebreakBlock if isinstance(
token, LinebreakToken) else CommentBlock
parserState.NewBlock = cls(parserState.LastBlock,
parserState.TokenMarker,
endToken=token.PreviousToken,
multiPart=True)
_ = block(parserState.NewBlock, token)
parserState.TokenMarker = None
parserState.NextState = cls.stateWhitespace1
return
raise TokenParserException(
"Expected '(' or whitespace after keyword PARAMETER.", token)
def stateProcedureName(cls, parserState: ParserState):
token = parserState.Token
if (isinstance(token, CharacterToken) and (token == "(")):
parserState.NewToken = BoundaryToken(token)
parserState.NewBlock = cls(
parserState.LastBlock,
parserState.TokenMarker,
endToken=parserState.NewToken.PreviousToken)
_ = ParameterList.OpenBlock(parserState.NewBlock,
parserState.NewToken)
parserState.TokenMarker = None
parserState.NextState = VoidBlock.stateAfterParameterList
parserState.PushState = ParameterList.OpenBlock.stateOpeningParenthesis
parserState.Counter = 1
return
elif isinstance(token, SpaceToken):
parserState.NewToken = BoundaryToken(token)
parserState.NextState = cls.stateWhitespace2
return
elif isinstance(token, (LinebreakToken, CommentToken)):
block = LinebreakBlock if isinstance(
token, LinebreakToken) else CommentBlock
parserState.NewBlock = cls(parserState.LastBlock,
parserState.TokenMarker,
endToken=token.PreviousToken,
multiPart=True)
_ = block(parserState.NewBlock, token)
parserState.TokenMarker = None
parserState.NextState = cls.stateWhitespace2
return
raise BlockParserException(
"Expected '(' or whitespace after procedure name.", token)
def stateOpeningParenthesis(cls, parserState: ParserState):
token = parserState.Token
if (isinstance(token, CharacterToken) and (token == ")")):
# if (parserState.TokenMarker != token):
# parserState.NewBlock = IndentationBlock(parserState.LastBlock, parserState.TokenMarker, token.PreviousToken)
parserState.Pop()
parserState.TokenMarker = token
return
elif isinstance(token, StringToken):
if (token <= "signal"):
parserState.NewToken = SignalKeyword(token)
parserState.NextState = DelimiterBlock.stateItemDelimiter
parserState.PushState = PortListInterfaceSignalBlock.stateSignalKeyword
parserState.TokenMarker = parserState.NewToken
return
else:
parserState.NewToken = IdentifierToken(token)
parserState.NextState = DelimiterBlock.stateItemDelimiter
parserState.PushState = PortListInterfaceSignalBlock.stateObjectName
parserState.TokenMarker = parserState.NewToken
return
elif isinstance(token, ExtendedIdentifier):
parserState.NextState = PortListInterfaceSignalBlock.stateObjectName
return
elif isinstance(token, SpaceToken):
blockType = IndentationBlock if isinstance(
token, IndentationToken) else WhitespaceBlock
parserState.NewBlock = blockType(parserState.LastBlock, token)
return
elif isinstance(token, LinebreakToken):
parserState.NewBlock = LinebreakBlock(parserState.LastBlock, token)
parserState.TokenMarker = token
# parserState.NextState = cls.stateWhitespace1
return
elif isinstance(token, CommentToken):
parserState.NewBlock = cls(parserState.LastBlock,
parserState.TokenMarker,
endToken=token.PreviousToken,
multiPart=True)
_ = CommentBlock(parserState.NewBlock, token)
parserState.TokenMarker = None
# parserState.NextState = cls.stateWhitespace1
return
raise TokenParserException(
"Expected interface signal name (identifier) or keyword: SIGNAL.",
token)
def stateConsumeComment(cls, parserState: ParserState):
token = parserState.Token
if (isinstance(token, CharacterToken) and (token == "*")):
parserState.PushState = cls.statePossibleCommentEnd
parserState.TokenMarker = token
return
else:
pass # consume everything until "*/"
def stateBeginKeyword(cls, parserState: ParserState):
token = parserState.Token
errorMessage = "Expected label or one of these keywords: assert, process."
if isinstance(token, CharacterToken):
if (token == "\n"):
parserState.NewToken = LinebreakToken(token)
parserState.NewBlock = LinebreakBlock(parserState.LastBlock,
parserState.NewToken)
parserState.TokenMarker = parserState.NewToken
return
elif (token == "-"):
parserState.PushState = SingleLineCommentBlock.statePossibleCommentStart
parserState.TokenMarker = token
return
elif (token == "/"):
parserState.PushState = MultiLineCommentBlock.statePossibleCommentStart
parserState.TokenMarker = token
return
elif isinstance(token, SpaceToken):
return
# parserState.NewToken = IndentationToken(token)
# parserState.NewBlock = IndentationBlock(parserState.LastBlock, parserState.NewToken)
# return
elif isinstance(token, StringToken):
keyword = token.Value.lower()
if (keyword == "process"):
newToken = ProcessKeyword(token)
parserState.PushState = Process.OpenBlock.stateProcessKeyword
elif (keyword == "assert"):
newToken = AssertKeyword(token)
parserState.PushState = AssertBlock.stateAssertKeyword
elif (keyword == "end"):
newToken = EndKeyword(token)
parserState.NextState = EndGenerateBlock.stateEndKeyword
else:
raise TokenParserException(errorMessage, token)
parserState.NewToken = newToken
parserState.TokenMarker = newToken
return
raise TokenParserException(errorMessage, token)
def stateClosingParenthesis(cls, parserState: ParserState):
token = parserState.Token
errorMessage = "Expected ';' or whitespace."
if isinstance(token, CharacterToken):
if (token == ";"):
parserState.NewToken = EndToken(token)
parserState.NewBlock = CloseBlock(
parserState.LastBlock,
parserState.TokenMarker,
endToken=parserState.NewToken)
parserState.Pop()
return
elif (token == "\n"):
parserState.NewToken = LinebreakToken(token)
parserState.PushState = LinebreakBlock.stateLinebreak
parserState.TokenMarker = parserState.NewToken
return
elif (token == "-"):
parserState.NewBlock = CloseBlock(parserState.LastBlock,
parserState.TokenMarker,
endToken=token.PreviousToken,
multiPart=True)
parserState.TokenMarker = None
parserState.NextState = cls.stateWhitespace1
parserState.PushState = SingleLineCommentBlock.statePossibleCommentStart
parserState.TokenMarker = token
return
elif (token == "/"):
parserState.NewBlock = CloseBlock(parserState.LastBlock,
parserState.TokenMarker,
endToken=token.PreviousToken,
multiPart=True)
parserState.TokenMarker = None
parserState.NextState = cls.stateWhitespace1
parserState.PushState = MultiLineCommentBlock.statePossibleCommentStart
parserState.TokenMarker = token
return
elif isinstance(token, SpaceToken):
parserState.NextState = cls.stateWhitespace1
return
raise TokenParserException(errorMessage, token)
def stateOpeningParenthesis(cls, parserState: ParserState):
token = parserState.Token
errorMessage = "Expected generic name (identifier)."
if isinstance(token, CharacterToken):
if (token == ")"):
# if (parserState.TokenMarker != token):
# parserState.NewBlock = IndentationBlock(parserState.LastBlock, parserState.TokenMarker, token.PreviousToken)
parserState.Pop()
parserState.TokenMarker = token
return
elif (token == "\n"):
parserState.NewToken = LinebreakToken(token)
parserState.NewBlock = LinebreakBlock(parserState.LastBlock,
parserState.NewToken)
parserState.TokenMarker = None
parserState.PushState = LinebreakBlock.stateLinebreak
return
elif (token == "-"):
parserState.TokenMarker = None
parserState.PushState = SingleLineCommentBlock.statePossibleCommentStart
parserState.TokenMarker = token
return
elif (token == "/"):
parserState.TokenMarker = None
parserState.PushState = MultiLineCommentBlock.statePossibleCommentStart
parserState.TokenMarker = token
return
elif isinstance(token, SpaceToken):
parserState.NewToken = IndentationToken(token)
parserState.NewBlock = IndentationBlock(parserState.LastBlock,
parserState.NewToken)
return
elif isinstance(token, StringToken):
parserState.NewToken = IdentifierToken(token)
parserState.TokenMarker = parserState.NewToken
parserState.NextState = ItemBlock.stateItemRemainder
# if (parserState.TokenMarker != token):
# parserState.NewBlock = IndentationBlock(parserState.LastBlock, parserState.TokenMarker, token)
return
raise TokenParserException(errorMessage, token)
def stateWhitespace2(cls, parserState: ParserState):
token = parserState.Token
if (isinstance(token, CharacterToken) and (token == "(")):
parserState.NewToken = BoundaryToken(token)
parserState.NewBlock = cls(parserState.LastBlock, parserState.TokenMarker, endToken=parserState.NewToken.PreviousToken)
_ = ParameterList.OpenBlock(parserState.NewBlock, parserState.NewToken)
parserState.TokenMarker = None
parserState.NextState = VoidBlock.stateAfterParameterList
parserState.PushState = ParameterList.OpenBlock.stateOpeningParenthesis
parserState.Counter = 1
return
elif isinstance(token, StringToken):
keyword = token.Value.lower()
if (keyword == "is"):
parserState.NewToken = IsKeyword(token)
parserState.NewBlock = cls(parserState.LastBlock, parserState.TokenMarker, endToken=parserState.NewToken.PreviousToken)
_ = VoidBlock(parserState.NewBlock, parserState.NewToken)
parserState.TokenMarker = parserState.NewToken
parserState.NextState = VoidBlock.stateDeclarativeRegion
return
elif (keyword == "generic"):
parserState.NewToken = GenericKeyword(token)
parserState.NewBlock = cls(parserState.LastBlock, parserState.TokenMarker, endToken=parserState.NewToken.PreviousToken)
parserState.NextState = GenericList.OpenBlock.stateGenericKeyword
parserState.TokenMarker = parserState.NewToken
return
elif (keyword == "parameter"):
parserState.NewToken = ParameterKeyword(token)
parserState.NewBlock = cls(parserState.LastBlock, parserState.TokenMarker, endToken=parserState.NewToken.PreviousToken)
parserState.NextState = ParameterList.OpenBlock.stateParameterKeyword
parserState.TokenMarker = parserState.NewToken
return
elif isinstance(token, LinebreakToken):
if (not (isinstance(parserState.LastBlock, CommentBlock) and isinstance(parserState.LastBlock.StartToken, MultiLineCommentToken))):
parserState.NewBlock = cls(parserState.LastBlock, parserState.TokenMarker, endToken=token.PreviousToken, multiPart=True)
_ = LinebreakBlock(parserState.NewBlock, token)
else:
parserState.NewBlock = LinebreakBlock(parserState.LastBlock, token)
parserState.TokenMarker = None
return
elif isinstance(token, CommentToken):
parserState.NewBlock = cls(parserState.LastBlock, parserState.TokenMarker, endToken=token.PreviousToken, multiPart=True)
_ = CommentBlock(parserState.NewBlock, token)
parserState.TokenMarker = None
return
elif (isinstance(token, SpaceToken) and (isinstance(parserState.LastBlock, CommentBlock) and isinstance(parserState.LastBlock.StartToken, MultiLineCommentToken))):
parserState.NewToken = BoundaryToken(token)
parserState.NewBlock = WhitespaceBlock(parserState.LastBlock, parserState.NewToken)
parserState.TokenMarker = None
return
raise TokenParserException("Expected '(' or keywords GENERIC, PARAMETER or RETURN after procedure name.", token)
def stateSubtypeIndication(cls, parserState: ParserState):
token = parserState.Token
if (isinstance(token, FusedCharacterToken) and (token == ":=")):
parserState.NewToken = VariableAssignmentKeyword(token)
parserState.NewBlock = cls(parserState.LastBlock,
parserState.TokenMarker,
endToken=parserState.NewToken)
parserState.NextState = cls.DELIMITER_BLOCK.stateItemDelimiter
parserState.PushState = cls.EXPRESSION.stateBeforeExpression
parserState.TokenMarker = None
parserState.Counter = 0
return
elif isinstance(token, CharacterToken):
if (token == ';'):
parserState.NewToken = DelimiterToken(token)
parserState.NewBlock = cls(
parserState.LastBlock,
parserState.TokenMarker,
endToken=parserState.NewToken.PreviousToken)
_ = cls.DELIMITER_BLOCK(parserState.NewBlock,
parserState.NewToken)
parserState.Pop()
return
elif (token == ')'):
parserState.NewToken = BoundaryToken(token)
parserState.NewBlock = cls(
parserState.LastBlock,
parserState.TokenMarker,
endToken=parserState.NewToken.PreviousToken)
parserState.Pop(2)
parserState.TokenMarker = parserState.NewToken
return
elif isinstance(token, SpaceToken):
parserState.NewToken = BoundaryToken(token)
parserState.NextState = cls.stateWhitespace5
return
elif isinstance(token, (LinebreakToken, CommentToken)):
block = LinebreakBlock if isinstance(
token, LinebreakToken) else CommentBlock
parserState.NewBlock = cls(parserState.LastBlock,
parserState.TokenMarker,
endToken=token.PreviousToken,
multiPart=True)
_ = block(parserState.NewBlock, token)
parserState.TokenMarker = None
parserState.NextState = cls.stateWhitespace5
return
raise TokenParserException(
"Expected ';', ':=' or whitespace after subtype indication.",
token)
def stateWhitespace1(cls, parserState: ParserState):
token = parserState.Token
if (isinstance(token, CharacterToken) and (token == "(")):
parserState.NewToken = BoundaryToken(token)
parserState.NewBlock = cls(parserState.LastBlock,
parserState.TokenMarker,
endToken=parserState.NewToken)
parserState.PushState = cls.stateOpeningParenthesis
parserState.Counter = 1
return
elif isinstance(token, LinebreakToken):
if (not (isinstance(parserState.LastBlock, CommentBlock)
and isinstance(parserState.LastBlock.StartToken,
MultiLineCommentToken))):
parserState.NewBlock = cls(parserState.LastBlock,
parserState.TokenMarker,
endToken=token.PreviousToken,
multiPart=True)
_ = LinebreakBlock(parserState.NewBlock, token)
else:
parserState.NewBlock = LinebreakBlock(parserState.LastBlock,
token)
parserState.TokenMarker = None
return
elif isinstance(token, CommentToken):
parserState.NewBlock = cls(parserState.LastBlock,
parserState.TokenMarker,
endToken=token.PreviousToken,
multiPart=True)
_ = CommentBlock(parserState.NewBlock, token)
parserState.TokenMarker = None
return
elif (isinstance(token, IndentationToken)
and isinstance(token.PreviousToken,
(LinebreakToken, SingleLineCommentToken))):
return
elif (isinstance(token, SpaceToken) and
(isinstance(parserState.LastBlock, CommentBlock) and isinstance(
parserState.LastBlock.StartToken, MultiLineCommentToken))):
parserState.NewToken = BoundaryToken(token)
parserState.NewBlock = WhitespaceBlock(parserState.LastBlock,
parserState.NewToken)
parserState.TokenMarker = None
return
raise TokenParserException("Expected '(' after keyword PARAMETER.",
token)
