def stateItemDelimiter(cls, parserState: ParserState):
token = parserState.Token
errorMessage = "Expected generic name (identifier)."
if (isinstance(token, CharacterToken) and (token == "\n")):
parserState.NewToken = LinebreakToken(token)
parserState.NewBlock = LinebreakBlock(parserState.LastBlock,
parserState.NewToken)
parserState.TokenMarker = None
parserState.NextState = OpenBlock.stateOpeningParenthesis
parserState.PushState = LinebreakBlock.stateLinebreak
return
elif isinstance(token, SpaceToken):
parserState.NextState = OpenBlock.stateOpeningParenthesis
return
elif isinstance(token, WordToken):
parserState.NewToken = IdentifierToken(token)
parserState.TokenMarker = parserState.NewToken
parserState.NextState = ItemBlock.stateItemRemainder
return
raise BlockParserException(errorMessage, token)
def statePackageName(cls, parserState: ParserState):
token = parserState.Token
if (isinstance(token, CharacterToken) and (token == ".")):
parserState.NewToken = DelimiterToken(token)
parserState.NextState = cls.stateDot2
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 BlockParserException("Expected '.' after package name.", token)
def stateColon1(cls, parserState: ParserState):
token = parserState.Token
if isinstance(token, WordToken):
parserState.NewToken = IdentifierToken(token)
parserState.NextState = cls.stateSubtypeIndication
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 BlockParserException(
"Expected subtype indication or whitespace after colon.", token)
def stateReturnKeyword(cls, parserState: ParserState):
token = parserState.Token
errorMessage = "Expected whitespace after keyword RETURN."
if isinstance(token, SpaceToken):
parserState.NewToken = BoundaryToken(token)
parserState.NextState = cls.stateWhitespace2
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(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 = CaseBlock(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 = CaseBlock(parserState.LastBlock, parserState.TokenMarker, endToken=token.PreviousToken, multiPart=True) parserState.TokenMarker = None 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.PushState = MultiLineCommentBlock.statePossibleCommentStart parserState.TokenMarker = token return elif (isinstance(token, WordToken) and (token <= "is")): parserState.NewToken = IsKeyword(token) parserState.NewBlock = CaseBlock(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 BlockParserException(errorMessage, token)
def stateItemDelimiter(cls, parserState: ParserState):
token = parserState.Token
if isinstance(token, StringToken):
tokenValue = token.Value.lower()
if (tokenValue == "constant"):
parserState.NewToken = ConstantKeyword(token)
parserState.PushState = ParameterListInterfaceConstantBlock.stateConstantKeyword
parserState.TokenMarker = parserState.NewToken
return
elif (tokenValue == "variable"):
parserState.NewToken = VariableKeyword(token)
parserState.PushState = ParameterListInterfaceVariableBlock.stateVariableKeyword
parserState.TokenMarker = parserState.NewToken
return
elif (tokenValue == "signal"):
parserState.NewToken = SignalKeyword(token)
parserState.PushState = ParameterListInterfaceSignalBlock.stateSignalKeyword
parserState.TokenMarker = parserState.NewToken
return
elif (tokenValue == "type"):
parserState.NewToken = TypeKeyword(token)
parserState.PushState = ParameterListInterfaceTypeBlock.stateTypeKeyword
parserState.TokenMarker = parserState.NewToken
return
elif (tokenValue == "procedure"):
raise NotImplementedError(
"Generic procedures are not supported.")
elif (tokenValue == "function"):
raise NotImplementedError(
"Generic functions are not supported.")
elif (tokenValue == "impure"):
raise NotImplementedError(
"Generic impure functions are not supported.")
elif (tokenValue == "pure"):
raise NotImplementedError(
"Generic pure functions are not supported.")
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):
parserState.TokenMarker = token
parserState.NextState = ItemBlock.stateItemRemainder
return
elif isinstance(token, LinebreakToken):
parserState.NewBlock = LinebreakBlock(parserState.LastBlock, token)
parserState.TokenMarker = token
parserState.NextState = ItemBlock.stateItemRemainder
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 parameter name (identifier).",
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, WordToken):
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 BlockParserException(
"Expected '(' or keywords GENERIC, PARAMETER or RETURN after procedure name.",
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.NextState = OpenBlock2.stateAfterSensitivityList
parserState.PushState = SensitivityList.OpenBlock.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 = CommentBlock(parserState.LastBlock, 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
elif isinstance(token, StringToken):
tokenValue = token.Value.lower()
parserState.NewBlock = cls(parserState.LastBlock,
parserState.TokenMarker,
endToken=token.PreviousToken)
for keyword in OpenBlock2.KEYWORDS:
if (tokenValue == keyword.__KEYWORD__):
newToken = keyword(token)
parserState.NextState = DeclarativeRegion.stateDeclarativeRegion
parserState.PushState = cls.KEYWORDS[keyword]
parserState.NewToken = newToken
parserState.TokenMarker = newToken
return
if (tokenValue == "begin"):
parserState.NewToken = BeginKeyword(token)
_ = BeginBlock(parserState.NewBlock, parserState.NewToken)
parserState.TokenMarker = None
parserState.NextState = BeginBlock.stateSequentialRegion
return
raise TokenParserException("Expected '(' after keyword PROCESS.",
token)
def stateWhitespace1(cls, parserState: ParserState):
token = parserState.Token
if isinstance(token, FusedCharacterToken):
parserState.NewToken = cls.FUSED_CHARACTER_TRANSLATION[token.Value](token)
parserState.NextState = cls.stateExpression
return
elif isinstance(token, CharacterToken):
if (token == ";"):
if (parserState.Counter == 0):
parserState.NewToken = EndToken(token)
parserState.NewBlock = cls(parserState.LastBlock, parserState.TokenMarker, endToken=parserState.NewToken.PreviousToken)
_ = cls.END_BLOCK(parserState.NewBlock, parserState.NewToken, endToken=parserState.NewToken)
parserState.Pop(2)
return
else:
raise BlockParserException("Mismatch in opening and closing parenthesis. Counter={0}".format(parserState.Counter), token)
elif (token == "("):
parserState.NewToken = OpeningRoundBracketToken(token)
parserState.Counter += 1
parserState.NextState = cls.stateExpression
return
elif (token == ")"):
if (parserState.Counter == -1):
raise BlockParserException("Mismatch in opening and closing parenthesis. Counter={0}".format(parserState.Counter), token)
else:
parserState.NewToken = ClosingRoundBracketToken(token)
parserState.Counter -= 1
parserState.NextState = cls.stateExpression
return
else:
parserState.NewToken = cls.CHARACTER_TRANSLATION[token.Value](token)
parserState.NextState = cls.stateExpression
return
elif isinstance(token, WordToken):
try:
parserState.NewToken = cls.OPERATOR_TRANSLATIONS[token.Value](token)
except KeyError:
parserState.NewToken = IdentifierToken(token)
parserState.NextState = cls.stateExpression
return
elif isinstance(token, LiteralToken):
parserState.NextState = cls.stateExpression
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):
if (not isinstance(parserState.LastBlock, LinebreakBlock)):
parserState.NewBlock = cls(parserState.LastBlock, parserState.TokenMarker, endToken=token.PreviousToken, multiPart=True)
_ = CommentBlock(parserState.NewBlock, token)
else:
parserState.NewBlock = CommentBlock(parserState.LastBlock, 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 BlockParserException("Expected identifier, literal, operator, '(', ')' or ';'.", token)
def stateWhitespace1(cls, parserState: ParserState):
token = parserState.Token
if isinstance(token, FusedCharacterToken):
parserState.NewToken = cls.FUSED_CHARACTER_TRANSLATION[
token.Value](token)
parserState.NextState = cls.stateExpression
return
elif isinstance(token, CharacterToken):
if (token == "("):
parserState.NewToken = OpeningRoundBracketToken(token)
parserState.Counter += 1
parserState.NextState = cls.stateExpression
return
elif (token == ")"):
parserState.NewToken = ClosingRoundBracketToken(token)
parserState.Counter -= 1
parserState.NextState = cls.stateExpression
return
else:
parserState.NewToken = cls.CHARACTER_TRANSLATION[token.Value](
token)
parserState.NextState = cls.stateExpression
return
elif isinstance(token, StringToken):
if (token <= cls.EXIT_KEYWORD.__KEYWORD__):
parserState.NewToken = cls.EXIT_KEYWORD(token)
parserState.NewBlock = cls(
parserState.LastBlock,
parserState.TokenMarker,
endToken=parserState.NewToken.PreviousToken)
_ = cls.EXIT_BLOCK(parserState.NewBlock, parserState.NewToken)
parserState.Pop()
# parserState.TokenMarker = parserState.NewToken
return
else:
try:
parserState.NewToken = cls.OPERATOR_TRANSLATIONS[
token.Value](token)
except KeyError:
parserState.NewToken = IdentifierToken(token)
parserState.NextState = cls.stateExpression
return
elif isinstance(token, LiteralToken):
parserState.NextState = cls.stateExpression
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):
if (not isinstance(parserState.LastBlock, LinebreakBlock)):
parserState.NewBlock = cls(parserState.LastBlock,
parserState.TokenMarker,
endToken=token.PreviousToken,
multiPart=True)
_ = CommentBlock(parserState.NewBlock, token)
else:
parserState.NewBlock = CommentBlock(parserState.LastBlock,
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 ????????????.", token)
def stateExpression(cls, parserState: ParserState):
token = parserState.Token
if isinstance(token, FusedCharacterToken):
try:
parserState.NewToken = cls.FUSED_CHARACTER_TRANSLATION[token.Value](token)
return
except KeyError:
if (token == cls.EXIT_CHAR):
if (parserState.Counter == 0):
parserState.NewToken = cls.EXIT_TOKEN(token)
parserState.NewBlock = cls(parserState.LastBlock, parserState.TokenMarker, endToken=parserState.NewToken.PreviousToken)
_ = cls.EXIT_BLOCK(parserState.NewBlock, parserState.NewToken, endToken=parserState.NewToken)
parserState.Pop(2)
return
else:
raise BlockParserException("Mismatch in opening and closing parenthesis. Counter={0}".format(parserState.Counter), token)
elif isinstance(token, CharacterToken):
if (token == cls.EXIT_CHAR):
if (parserState.Counter == 0):
parserState.NewToken = cls.EXIT_TOKEN(token)
parserState.NewBlock = cls(parserState.LastBlock, parserState.TokenMarker, endToken=parserState.NewToken.PreviousToken)
_ = cls.EXIT_BLOCK(parserState.NewBlock, parserState.NewToken, endToken=parserState.NewToken)
parserState.Pop(2)
return
else:
raise BlockParserException("Mismatch in opening and closing parenthesis. Counter={0}".format(parserState.Counter), token)
elif (token == "("):
parserState.NewToken = OpeningRoundBracketToken(token)
parserState.Counter += 1
return
elif (token == ")"):
if (parserState.Counter == 0):
parserState.NewToken = BoundaryToken(token)
parserState.NewBlock = cls(parserState.LastBlock, parserState.TokenMarker, endToken=parserState.NewToken.PreviousToken)
parserState.Pop(3, parserState.NewToken)
return
else:
parserState.NewToken = ClosingRoundBracketToken(token)
parserState.Counter -= 1
return
else:
parserState.NewToken = cls.CHARACTER_TRANSLATION[token.Value](token)
return
elif isinstance(token, WordToken):
try:
parserState.NewToken = cls.OPERATOR_TRANSLATIONS[token.Value](token)
except KeyError:
parserState.NewToken = IdentifierToken(token)
return
elif isinstance(token, LiteralToken):
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 BlockParserException("Expected ?????????????.", token)
def stateWhitespace5(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.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, 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 = CommentBlock(parserState.LastBlock, 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 ';' or ':='.", token)
def stateWhitespace1(cls, parserState: ParserState):
token = parserState.Token
if isinstance(token, WordToken):
tokenValue = token.Value.lower()
for keyword in cls.KEYWORDS:
if (tokenValue == keyword.__KEYWORD__):
newToken = keyword(token)
parserState.NextState = DeclarativeRegion.stateDeclarativeRegion
parserState.PushState = cls.KEYWORDS[keyword]
parserState.NewToken = newToken
parserState.TokenMarker = newToken
return
if (tokenValue == "begin"):
parserState.NewToken = BeginKeyword(token)
parserState.NewBlock = BeginBlock(parserState.LastBlock,
parserState.NewToken)
parserState.TokenMarker = None
parserState.NextState = BeginBlock.stateSequentialRegion
return
elif (tokenValue == "is"):
parserState.NewToken = IsKeyword(token)
parserState.NewBlock = cls(parserState.LastBlock,
parserState.TokenMarker,
parserState.NewToken)
parserState.TokenMarker = None
parserState.NextState = DeclarativeRegion.stateDeclarativeRegion
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 BlockParserException(
"Expected declarations or keyword IS after sensitivity list.",
token)
def stateWhitespace1(cls, parserState: ParserState):
token = parserState.Token
errorMessage = "Expected '(' after keyword PORT."
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 BlockParserException(errorMessage, 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(1, token)
return
elif isinstance(token, WordToken):
if (token <= "constant"):
parserState.NewToken = ConstantKeyword(token)
parserState.NextState = DelimiterBlock.stateItemDelimiter
parserState.PushState = GenericListInterfaceConstantBlock.stateConstantKeyword
parserState.TokenMarker = parserState.NewToken
return
elif (token <= "type"):
parserState.NewToken = TypeKeyword(token)
parserState.NextState = DelimiterBlock.stateItemDelimiter
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.NextState = DelimiterBlock.stateItemDelimiter
parserState.PushState = GenericListInterfaceConstantBlock.stateObjectName
parserState.TokenMarker = parserState.NewToken
return
elif isinstance(token, ExtendedIdentifier):
parserState.NextState = GenericListInterfaceConstantBlock.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 BlockParserException(
"Expected interface constant name (identifier) or keyword: CONSTANT, TYPE, PROCEDURE, FUNCTION, PURE, IMPURE.",
token)
def stateExpression(cls, parserState: ParserState):
token = parserState.Token
if isinstance(token, FusedCharacterToken):
parserState.NewToken = cls.FUSED_CHARACTER_TRANSLATION[
token.Value](token)
return
elif isinstance(token, CharacterToken):
if (token == "("):
parserState.NewToken = OpeningRoundBracketToken(token)
parserState.Counter += 1
return
elif (token == ")"):
parserState.NewToken = ClosingRoundBracketToken(token)
parserState.Counter -= 1
return
else:
parserState.NewToken = cls.CHARACTER_TRANSLATION[token.Value](
token)
return
elif isinstance(token, StringToken):
tokenValue = token.Value.lower()
if (tokenValue == cls.EXIT_KEYWORD.__KEYWORD__):
parserState.NewToken = LoopKeyword(token)
parserState.NewBlock = cls(
parserState.LastBlock,
parserState.TokenMarker,
endToken=parserState.NewToken.PreviousToken)
_ = cls.EXIT_BLOCK(parserState.NewBlock, parserState.NewToken)
parserState.Pop(2)
parserState.TokenMarker = parserState.NewToken
return
elif (tokenValue == "to"):
from pyVHDLParser.Blocks.ControlStructure.ForLoop import LoopIterationDirectionBlock
parserState.NewToken = ToKeyword(token)
parserState.NewBlock = cls(
parserState.LastBlock,
parserState.TokenMarker,
endToken=parserState.NewToken.PreviousToken)
_ = LoopIterationDirectionBlock(parserState.NewBlock,
parserState.NewToken)
parserState.Pop()
parserState.TokenMarker = parserState.NewToken
return
elif (tokenValue == "downto"):
from pyVHDLParser.Blocks.ControlStructure.ForLoop import LoopIterationDirectionBlock
parserState.NewToken = DowntoKeyword(token)
parserState.NewBlock = cls(
parserState.LastBlock,
parserState.TokenMarker,
endToken=parserState.NewToken.PreviousToken)
_ = LoopIterationDirectionBlock(parserState.NewBlock,
parserState.NewToken)
parserState.Pop()
parserState.TokenMarker = parserState.NewToken
return
else:
try:
parserState.NewToken = cls.OPERATOR_TRANSLATIONS[
token.Value](token)
except KeyError:
parserState.NewToken = IdentifierToken(token)
return
elif isinstance(token, LiteralToken):
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 GENERIC.", token)
def stateWhitespace1(cls, parserState: ParserState):
token = parserState.Token
if isinstance(token, CharacterToken):
if ((cls.KEYWORD_IS_OPTIONAL is True) and (token == ";")):
parserState.NewToken = EndToken(token)
parserState.NewBlock = cls(parserState.LastBlock,
parserState.TokenMarker,
endToken=parserState.NewToken)
parserState.Pop()
return
elif isinstance(token, StringToken):
IS_SINGLE_KEYWORD = isinstance(cls.KEYWORD, tuple)
KW = cls.KEYWORD[0] if IS_SINGLE_KEYWORD else cls.KEYWORD
if (token <= KW.__KEYWORD__):
parserState.NewToken = KW(token)
parserState.NextState = cls.stateKeyword1
elif (cls.EXPECTED_NAME_KIND == "label"):
parserState.NewToken = LabelToken(token)
parserState.NextState = cls.stateSimpleName
else:
parserState.NewToken = IdentifierToken(token)
parserState.NextState = cls.stateSimpleName
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
if (cls.KEYWORD_IS_OPTIONAL is True):
if (cls.EXPECTED_NAME_KIND == "label"):
errorMessage = "Expected ';', {0} keyword or {1} label.".format(
cls.EXPECTED_NAME.upper(), cls.EXPECTED_NAME)
else:
errorMessage = "Expected ';', {0} keyword or {1} name.".format(
cls.EXPECTED_NAME.upper(), cls.EXPECTED_NAME)
else:
if (cls.EXPECTED_NAME_KIND == "label"):
errorMessage = "Expected {0} keyword or {1} label.".format(
cls.EXPECTED_NAME.upper(), cls.EXPECTED_NAME)
else:
errorMessage = "Expected {0} keyword or {1} name.".format(
cls.EXPECTED_NAME.upper(), cls.EXPECTED_NAME)
raise TokenParserException(errorMessage, token)
def stateWhitespace1(cls, parserState: ParserState):
token = parserState.Token
if isinstance(token, FusedCharacterToken):
parserState.NewToken = cls.FUSED_CHARACTER_TRANSLATION[token.Value](token)
parserState.NextState = cls.stateExpression
return
elif isinstance(token, CharacterToken):
if (token == "("):
parserState.NewToken = OpeningRoundBracketToken(token)
parserState.Counter += 1
parserState.NextState = cls.stateExpression
return
elif (token == ")"):
parserState.NewToken = ClosingRoundBracketToken(token)
parserState.Counter -= 1
parserState.NextState = cls.stateExpression
return
else:
parserState.NewToken = cls.CHARACTER_TRANSLATION[token.Value](token)
parserState.NextState = cls.stateExpression
return
elif isinstance(token, WordToken):
tokenValue = token.Value.lower()
if (tokenValue == cls.EXIT_KEYWORD.__KEYWORD__):
parserState.NewToken = LoopKeyword(token)
parserState.NewBlock = cls(parserState.LastBlock, parserState.TokenMarker, endToken=parserState.NewToken.PreviousToken)
_ = cls.EXIT_BLOCK(parserState.NewBlock, parserState.NewToken)
parserState.Pop(1, parserState.NewToken)
return
elif (tokenValue == "to"):
from pyVHDLParser.Blocks.ControlStructure.ForLoop import LoopIterationDirectionBlock
parserState.NewToken = ToKeyword(token)
parserState.NewBlock = cls(parserState.LastBlock, parserState.TokenMarker, endToken=parserState.NewToken.PreviousToken)
_ = LoopIterationDirectionBlock(parserState.NewBlock, parserState.NewToken)
parserState.Pop()
return
elif (tokenValue == "downto"):
from pyVHDLParser.Blocks.ControlStructure.ForLoop import LoopIterationDirectionBlock
parserState.NewToken = DowntoKeyword(token)
parserState.NewBlock = cls(parserState.LastBlock, parserState.TokenMarker, endToken=parserState.NewToken.PreviousToken)
_ = LoopIterationDirectionBlock(parserState.NewBlock, parserState.NewToken)
parserState.Pop()
return
else:
try:
parserState.NewToken = cls.OPERATOR_TRANSLATIONS[token.Value](token)
except KeyError:
parserState.NewToken = IdentifierToken(token)
parserState.NextState = cls.stateExpression
return
elif isinstance(token, LiteralToken):
parserState.NextState = cls.stateExpression
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):
if (not isinstance(parserState.LastBlock, LinebreakBlock)):
parserState.NewBlock = cls(parserState.LastBlock, parserState.TokenMarker, endToken=token.PreviousToken, multiPart=True)
_ = CommentBlock(parserState.NewBlock, token)
else:
parserState.NewBlock = CommentBlock(parserState.LastBlock, 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 BlockParserException("Expected ????????????.", token)