private static void unlink(PythonLexer lexer, PythonParser parser) {
ATNSimulator simulator = parser.getInterpreter();
simulator.clearDFA();
lexer.setInterpreter(
new LexerATNSimulator(
lexer,
lexer.getATN(),
lexer.getInterpreter().decisionToDFA,
new PredictionContextCache()));
parser.setInterpreter(
new ParserATNSimulator(
parser,
parser.getATN(),
parser.getInterpreter().decisionToDFA,
new PredictionContextCache()));
}
public static ParserRuleContext getParseTree(String fileName) throws Exception {
FileOpener fo = new FileOpener(fileName);
String contents = fo.getTrimmedContents();
org.antlr.v4.runtime.CharStream input = new org.antlr.v4.runtime.ANTLRInputStream(contents);
PythonLexer lexer = new PythonLexer(input);
org.antlr.v4.runtime.CommonTokenStream tokens =
new org.antlr.v4.runtime.CommonTokenStream(lexer);
PythonParser parser = new PythonParser(tokens);
parser.setErrorHandler(new BailErrorStrategy());
try {
ParserRuleContext context = parser.file_input();
File2Tree.unlink(lexer, parser);
return context;
} catch (Exception ex) {
File2Tree.unlink(lexer, parser);
throw ex;
}
}