Examples with LexerGrammar org.antlr.v4.tool.LexerGrammar used on opensource projects

Example 1 with LexerGrammar

use of org.antlr.v4.tool.LexerGrammar in project antlr4 by antlr.

the class BaseGoTest method testActions.

public void testActions(String templates, String actionName, String action, String expected) throws org.antlr.runtime.RecognitionException {
    int lp = templates.indexOf('(');
    String name = templates.substring(0, lp);
    STGroup group = new STGroupString(templates);
    ST st = group.getInstanceOf(name);
    st.add(actionName, action);
    String grammar = st.render();
    ErrorQueue equeue = new ErrorQueue();
    Grammar g = new Grammar(grammar, equeue);
    if (g.ast != null && !g.ast.hasErrors) {
        SemanticPipeline sem = new SemanticPipeline(g);
        sem.process();
        ATNFactory factory = new ParserATNFactory(g);
        if (g.isLexer())
            factory = new LexerATNFactory((LexerGrammar) g);
        g.atn = factory.createATN();
        CodeGenerator gen = new CodeGenerator(g);
        ST outputFileST = gen.generateParser();
        String output = outputFileST.render();
        // System.out.println(output);
        String b = "#" + actionName + "#";
        int start = output.indexOf(b);
        String e = "#end-" + actionName + "#";
        int end = output.indexOf(e);
        String snippet = output.substring(start + b.length(), end);
        assertEquals(expected, snippet);
    }
    if (equeue.size() > 0) {
        System.err.println(equeue.toString());
    }
}

Example 2 with LexerGrammar

use of org.antlr.v4.tool.LexerGrammar in project antlr4 by antlr.

the class BaseGoTest method getTokenTypes.

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;
    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;
}

Example 3 with LexerGrammar

use of org.antlr.v4.tool.LexerGrammar in project antlr4 by antlr.

the class BaseJavaTest method getTokenTypes.

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;
    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;
}

Example 4 with LexerGrammar

use of org.antlr.v4.tool.LexerGrammar in project antlr4 by antlr.

the class BaseJavaTest method checkLexerDFA.

List<ANTLRMessage> checkLexerDFA(String gtext, String modeName, String expecting) throws Exception {
    ErrorQueue equeue = new ErrorQueue();
    LexerGrammar g = new LexerGrammar(gtext, equeue);
    g.atn = createATN(g, false);
    //		return equeue.all;
    return null;
}

Example 5 with LexerGrammar

use of org.antlr.v4.tool.LexerGrammar in project antlr4 by antlr.

the class BaseCppTest method createATN.

protected ATN createATN(Grammar g, boolean useSerializer) {
    if (g.atn == null) {
        semanticProcess(g);
        assertEquals(0, g.tool.getNumErrors());
        ParserATNFactory f;
        if (g.isLexer()) {
            f = new LexerATNFactory((LexerGrammar) g);
        } else {
            f = new ParserATNFactory(g);
        }
        g.atn = f.createATN();
        assertEquals(0, g.tool.getNumErrors());
    }
    ATN atn = g.atn;
    if (useSerializer) {
        char[] serialized = ATNSerializer.getSerializedAsChars(atn);
        return new ATNDeserializer().deserialize(serialized);
    }
    return atn;
}