def accept(self, input:InputStream, lexerActionExecutor:LexerActionExecutor, startIndex:int, index:int, line:int, charPos:int):
if LexerATNSimulator.debug:
print("ACTION", lexerActionExecutor)
# seek to after last char in token
input.seek(index)
self.line = line
self.column = charPos
if lexerActionExecutor is not None and self.recog is not None:
lexerActionExecutor.execute(self.recog, input, startIndex)
def testStream(self):
stream = InputStream("abcde")
self.assertEqual(0, stream.index)
self.assertEqual(5, stream.size)
self.assertEqual(ord("a"), stream.LA(1))
stream.consume()
self.assertEqual(1, stream.index)
stream.seek(5)
self.assertEqual(Token.EOF, stream.LA(1))
self.assertEqual("bcd", stream.getText(1, 3))
stream.reset()
self.assertEqual(0, stream.index)
def accept(self, input: InputStream,
lexerActionExecutor: LexerActionExecutor, startIndex: int,
index: int, line: int, charPos: int):
if self.debug:
print("ACTION %s\n", lexerActionExecutor)
# seek to after last char in token
input.seek(index)
self.line = line
self.column = charPos
if input.LA(1) != Token.EOF:
self.consume(input)
if lexerActionExecutor is not None and self.recog is not None:
lexerActionExecutor.execute(self.recog, input, startIndex)
def evaluatePredicate(self, input:InputStream, ruleIndex:int, predIndex:int, speculative:bool):
# assume true if no recognizer was provided
if self.recog is None:
return True
if not speculative:
return self.recog.sempred(None, ruleIndex, predIndex)
savedcolumn = self.column
savedLine = self.line
index = input.index
marker = input.mark()
try:
self.consume(input)
return self.recog.sempred(None, ruleIndex, predIndex)
finally:
self.column = savedcolumn
self.line = savedLine
input.seek(index)
input.release(marker)
def accept(
self,
input: InputStream,
lexerActionExecutor: LexerActionExecutor,
startIndex: int,
index: int,
line: int,
charPos: int,
):
if self.debug:
print("ACTION %s\n", lexerActionExecutor)
# seek to after last char in token
input.seek(index)
self.line = line
self.column = charPos
if input.LA(1) != Token.EOF:
self.consume(input)
if lexerActionExecutor is not None and self.recog is not None:
lexerActionExecutor.execute(self.recog, input, startIndex)
def execute(self, lexer:Lexer, input:InputStream, startIndex:int):
requiresSeek = False
stopIndex = input.index
try:
for lexerAction in self.lexerActions:
if isinstance(lexerAction, LexerIndexedCustomAction):
offset = lexerAction.offset
input.seek(startIndex + offset)
lexerAction = lexerAction.action
requiresSeek = (startIndex + offset) != stopIndex
elif lexerAction.isPositionDependent:
input.seek(stopIndex)
requiresSeek = False
lexerAction.execute(lexer)
finally:
if requiresSeek:
input.seek(stopIndex)
def execute(self, lexer: Lexer, input: InputStream, startIndex: int):
requiresSeek = False
stopIndex = input.index
try:
for lexerAction in self.lexerActions:
if isinstance(lexerAction, LexerIndexedCustomAction):
offset = lexerAction.offset
input.seek(startIndex + offset)
lexerAction = lexerAction.action
requiresSeek = (startIndex + offset) != stopIndex
elif lexerAction.isPositionDependent:
input.seek(stopIndex)
requiresSeek = False
lexerAction.execute(lexer)
finally:
if requiresSeek:
input.seek(stopIndex)
