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

Example 16 with Grammar

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

the class BaseJavaTest method semanticProcess.

protected void semanticProcess(Grammar g) {
    if (g.ast != null && !g.ast.hasErrors) {
        //			System.out.println(g.ast.toStringTree());
        Tool antlr = new Tool();
        SemanticPipeline sem = new SemanticPipeline(g);
        sem.process();
        if (g.getImportedGrammars() != null) {
            // process imported grammars (if any)
            for (Grammar imp : g.getImportedGrammars()) {
                antlr.processNonCombinedGrammar(imp, false);
            }
        }
    }
}

Example 17 with Grammar

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

the class BaseCppTest method checkRuleDFA.

List<ANTLRMessage> checkRuleDFA(String gtext, String ruleName, String expecting) throws Exception {
    ErrorQueue equeue = new ErrorQueue();
    Grammar g = new Grammar(gtext, equeue);
    ATN atn = createATN(g, false);
    ATNState s = atn.ruleToStartState[g.getRule(ruleName).index];
    if (s == null) {
        System.err.println("no such rule: " + ruleName);
        return null;
    }
    ATNState t = s.transition(0).target;
    if (!(t instanceof DecisionState)) {
        System.out.println(ruleName + " has no decision");
        return null;
    }
    DecisionState blk = (DecisionState) t;
    checkRuleDFA(g, blk, expecting);
    return equeue.all;
}

Example 18 with Grammar

use of org.antlr.v4.tool.Grammar 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;
}

Example 19 with Grammar

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

the class BaseGoTest 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;
}

Example 20 with Grammar

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

the class BaseJavaTest 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();
        AnalysisPipeline anal = new AnalysisPipeline(g);
        anal.process();
        CodeGenerator gen = new CodeGenerator(g);
        ST outputFileST = gen.generateParser(false);
        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());
    }
}