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

Example 11 with Grammar

use of org.antlr.v4.tool.Grammar 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 12 with Grammar

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

the class BaseCppTest method checkRuleDFA.

void checkRuleDFA(Grammar g, DecisionState blk, String expecting) throws Exception {
    DFA dfa = createDFA(g, blk);
    String result = null;
    if (dfa != null)
        result = dfa.toString();
    assertEquals(expecting, result);
}

Example 13 with Grammar

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

the class BaseJavaTest 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 14 with Grammar

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

the class BaseJavaTest method getTypesFromString.

//	public void minimizeDFA(DFA dfa) {
//		DFAMinimizer dmin = new DFAMinimizer(dfa);
//		dfa.minimized = dmin.minimize();
//	}
IntegerList getTypesFromString(Grammar g, String expecting) {
    IntegerList expectingTokenTypes = new IntegerList();
    if (expecting != null && !expecting.trim().isEmpty()) {
        for (String tname : expecting.replace(" ", "").split(",")) {
            int ttype = g.getTokenType(tname);
            expectingTokenTypes.add(ttype);
        }
    }
    return expectingTokenTypes;
}

Example 15 with Grammar

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

the class BaseJavaTest method checkRuleDFA.

void checkRuleDFA(Grammar g, DecisionState blk, String expecting) throws Exception {
    DFA dfa = createDFA(g, blk);
    String result = null;
    if (dfa != null)
        result = dfa.toString();
    assertEquals(expecting, result);
}