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Example 6 with ParserATNFactory

use of org.antlr.v4.automata.ParserATNFactory in project antlr4 by antlr.

the class BaseBrowserTest method checkRuleATN.

void checkRuleATN(Grammar g, String ruleName, String expecting) {
    ParserATNFactory f = new ParserATNFactory(g);
    ATN atn = f.createATN();
    DOTGenerator dot = new DOTGenerator(g);
    System.out.println(dot.getDOT(atn.ruleToStartState[g.getRule(ruleName).index]));
    Rule r = g.getRule(ruleName);
    ATNState startState = atn.ruleToStartState[r.index];
    ATNPrinter serializer = new ATNPrinter(g, startState);
    String result = serializer.asString();
    //System.out.print(result);
    assertEquals(expecting, result);
}
Also used : ParserATNFactory(org.antlr.v4.automata.ParserATNFactory) DOTGenerator(org.antlr.v4.tool.DOTGenerator) ATNPrinter(org.antlr.v4.automata.ATNPrinter) ATN(org.antlr.v4.runtime.atn.ATN) Rule(org.antlr.v4.tool.Rule) TestRule(org.junit.rules.TestRule) STGroupString(org.stringtemplate.v4.STGroupString) BaseRuntimeTest.antlrOnString(org.antlr.v4.test.runtime.BaseRuntimeTest.antlrOnString) ATNState(org.antlr.v4.runtime.atn.ATNState)

Example 7 with ParserATNFactory

use of org.antlr.v4.automata.ParserATNFactory in project antlr4 by antlr.

the class BasePythonTest 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;
}
Also used : ATNDeserializer(org.antlr.v4.runtime.atn.ATNDeserializer) ParserATNFactory(org.antlr.v4.automata.ParserATNFactory) ATN(org.antlr.v4.runtime.atn.ATN) LexerGrammar(org.antlr.v4.tool.LexerGrammar) LexerATNFactory(org.antlr.v4.automata.LexerATNFactory)

Example 8 with ParserATNFactory

use of org.antlr.v4.automata.ParserATNFactory in project antlr4 by antlr.

the class BasePythonTest 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());
    }
}
Also used : ST(org.stringtemplate.v4.ST) SemanticPipeline(org.antlr.v4.semantics.SemanticPipeline) ParserATNFactory(org.antlr.v4.automata.ParserATNFactory) STGroup(org.stringtemplate.v4.STGroup) ParserATNFactory(org.antlr.v4.automata.ParserATNFactory) ATNFactory(org.antlr.v4.automata.ATNFactory) LexerATNFactory(org.antlr.v4.automata.LexerATNFactory) ErrorQueue(org.antlr.v4.test.runtime.ErrorQueue) STGroupString(org.stringtemplate.v4.STGroupString) BaseRuntimeTest.antlrOnString(org.antlr.v4.test.runtime.BaseRuntimeTest.antlrOnString) Grammar(org.antlr.v4.tool.Grammar) LexerGrammar(org.antlr.v4.tool.LexerGrammar) CodeGenerator(org.antlr.v4.codegen.CodeGenerator) LexerATNFactory(org.antlr.v4.automata.LexerATNFactory) STGroupString(org.stringtemplate.v4.STGroupString)

Example 9 with ParserATNFactory

use of org.antlr.v4.automata.ParserATNFactory in project antlr4 by tunnelvisionlabs.

the class TestATNInterpreter method checkMatchedAlt.

public void checkMatchedAlt(LexerGrammar lg, final Grammar g, String inputString, int expected) {
    ATN lexatn = createATN(lg, true);
    LexerATNSimulator lexInterp = new LexerATNSimulator(lexatn);
    IntegerList types = getTokenTypesViaATN(inputString, lexInterp);
    System.out.println(types);
    g.importVocab(lg);
    ParserATNFactory f = new ParserATNFactory(g);
    ATN atn = f.createATN();
    IntTokenStream input = new IntTokenStream(types);
    System.out.println("input=" + input.types);
    ParserInterpreterForTesting interp = new ParserInterpreterForTesting(g, input);
    ATNState startState = atn.ruleToStartState[g.getRule("a").index];
    if (startState.transition(0).target instanceof BlockStartState) {
        startState = startState.transition(0).target;
    }
    DOTGenerator dot = new DOTGenerator(g);
    System.out.println(dot.getDOT(atn.ruleToStartState[g.getRule("a").index]));
    Rule r = g.getRule("e");
    if (r != null)
        System.out.println(dot.getDOT(atn.ruleToStartState[r.index]));
    int result = interp.matchATN(input, startState);
    assertEquals(expected, result);
}
Also used : ParserATNFactory(org.antlr.v4.automata.ParserATNFactory) DOTGenerator(org.antlr.v4.tool.DOTGenerator) LexerATNSimulator(org.antlr.v4.runtime.atn.LexerATNSimulator) IntegerList(org.antlr.v4.runtime.misc.IntegerList) ATN(org.antlr.v4.runtime.atn.ATN) Rule(org.antlr.v4.tool.Rule) BlockStartState(org.antlr.v4.runtime.atn.BlockStartState) ATNState(org.antlr.v4.runtime.atn.ATNState)

Example 10 with ParserATNFactory

use of org.antlr.v4.automata.ParserATNFactory in project antlr4 by tunnelvisionlabs.

the class TestATNConstruction method checkTokensRule.

void checkTokensRule(LexerGrammar g, String modeName, String expecting) {
    // }
    if (modeName == null)
        modeName = "DEFAULT_MODE";
    if (g.modes.get(modeName) == null) {
        System.err.println("no such mode " + modeName);
        return;
    }
    ParserATNFactory f = new LexerATNFactory(g);
    ATN nfa = f.createATN();
    ATNState startState = nfa.modeNameToStartState.get(modeName);
    ATNPrinter serializer = new ATNPrinter(g, startState);
    String result = serializer.asString();
    // System.out.print(result);
    assertEquals(expecting, result);
}
Also used : ParserATNFactory(org.antlr.v4.automata.ParserATNFactory) ATNPrinter(org.antlr.v4.automata.ATNPrinter) ATN(org.antlr.v4.runtime.atn.ATN) LexerATNFactory(org.antlr.v4.automata.LexerATNFactory) ATNState(org.antlr.v4.runtime.atn.ATNState)

Aggregations

ParserATNFactory (org.antlr.v4.automata.ParserATNFactory)33 LexerATNFactory (org.antlr.v4.automata.LexerATNFactory)22 ATN (org.antlr.v4.runtime.atn.ATN)19 LexerGrammar (org.antlr.v4.tool.LexerGrammar)17 ATNFactory (org.antlr.v4.automata.ATNFactory)12 SemanticPipeline (org.antlr.v4.semantics.SemanticPipeline)12 STGroupString (org.stringtemplate.v4.STGroupString)12 BaseRuntimeTest.antlrOnString (org.antlr.v4.test.runtime.BaseRuntimeTest.antlrOnString)10 CodeGenerator (org.antlr.v4.codegen.CodeGenerator)9 ATNState (org.antlr.v4.runtime.atn.ATNState)9 DOTGenerator (org.antlr.v4.tool.DOTGenerator)9 Grammar (org.antlr.v4.tool.Grammar)9 Rule (org.antlr.v4.tool.Rule)9 ST (org.stringtemplate.v4.ST)9 ATNDeserializer (org.antlr.v4.runtime.atn.ATNDeserializer)8 ATNPrinter (org.antlr.v4.automata.ATNPrinter)7 STGroup (org.stringtemplate.v4.STGroup)7 ErrorQueue (org.antlr.v4.test.runtime.ErrorQueue)6 AnalysisPipeline (org.antlr.v4.analysis.AnalysisPipeline)5 LexerATNSimulator (org.antlr.v4.runtime.atn.LexerATNSimulator)4