def compileTreePattern(self, pattern: str, patternRuleIndex: int):
tokenList = self.tokenize(pattern)
tokenSrc = ListTokenSource(tokenList)
tokens = CommonTokenStream(tokenSrc)
from antlr4.ParserInterpreter import ParserInterpreter
parserInterp = ParserInterpreter(self.parser.grammarFileName,
self.parser.tokenNames,
self.parser.ruleNames,
self.parser.getATNWithBypassAlts(),
tokens)
tree = None
try:
parserInterp.setErrorHandler(BailErrorStrategy())
tree = parserInterp.parse(patternRuleIndex)
except ParseCancellationException as e:
raise e.cause
except RecognitionException as e:
raise e
except Exception as e:
raise CannotInvokeStartRule(e)
# Make sure tree pattern compilation checks for a complete parse
if tokens.LA(1) != Token.EOF:
raise StartRuleDoesNotConsumeFullPattern()
from antlr4.tree.ParseTreePattern import ParseTreePattern
return ParseTreePattern(self, pattern, patternRuleIndex, tree)
