Example usage for org.antlr.v4.runtime.atn LexerATNSimulator LexerATNSimulator

Introduction

In this page you can find the example usage for org.antlr.v4.runtime.atn LexerATNSimulator LexerATNSimulator.

Prototype

public LexerATNSimulator(ATN atn, DFA[] decisionToDFA, PredictionContextCache sharedContextCache) 

Source Link

Usage

From source file:net.certiv.json.test.base.AbstractBase.java

License:Open Source License

public List<String> getTokenTypes(LexerGrammar lg, ATN atn, CharStream input) {
    LexerATNSimulator interp = new LexerATNSimulator(atn,
            new DFA[] { new DFA(atn.modeToStartState.get(Lexer.DEFAULT_MODE)) }, null);
    List<String> tokenTypes = new ArrayList<String>();
    int ttype;//  ww  w . j av a 2s. c om
    boolean hitEOF = false;
    do {
        if (hitEOF) {
            tokenTypes.add("EOF");
            break;
        }
        int t = input.LA(1);
        ttype = interp.match(input, Lexer.DEFAULT_MODE);
        if (ttype == Token.EOF) {
            tokenTypes.add("EOF");
        } else {
            tokenTypes.add(lg.typeToTokenList.get(ttype));
        }

        if (t == IntStream.EOF) {
            hitEOF = true;
        }
    } while (ttype != Token.EOF);
    return tokenTypes;
}

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