Examples of org.antlr.v4.tool.DOTGenerator

org.antlr.v4.tool.DOTGenerator
The DOT (part of graphviz) generation aspect.

          }
        }
      }
      if(arg0.getParent() instanceof ExpressionContext) {
        // we are the leftmost child of the expression
        ParseTree chld = arg0.getParent().getChild(arg0.getParent().getChildCount()-1);
        if(!chld.equals(arg0)) return;
        addQuery(classUtils.expandExpression(arg0.getParent().getText(), registry));
      }
    }
  }

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//    parser.setTokenFactory(factory);
    parser.addErrorListener(new DiagnosticErrorListener());
    parser.getInterpreter().setPredictionMode(
        PredictionMode.LL_EXACT_AMBIG_DETECTION);
    parser.setBuildParseTree(true);
    ParseTree tree = parser.mson();
    // show tree in text form
    // System.out.println(tree.toStringTree(parser));


    ParseTreeWalker walker = new ParseTreeWalker();
    SymbolTable symtab = new SymbolTable();

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    JavaParser parser = new JavaParser(tokens);
    parser.removeErrorListeners();
    
    // start parsing at the compilationUnit rule
    ParserRuleContext t = parser.compilationUnit();
    ParseTreeWalker walker = new ParseTreeWalker();
    List<AutocompleteCandidate> q = new ArrayList<AutocompleteCandidate>();
          
    ImportDeclarationCompletion extractor = new ImportDeclarationCompletion(txt,cur,registry,cps,cu);
    NameBuilder extractor2 = new NameBuilder(registry,cu );
    NodeCompletion extractor3 = new NodeCompletion(txt,cur, registry, cu);
    walker.walk(extractor, t);
    if(extractor.getQuery()!=null)
      q.addAll(extractor.getQuery());
    walker.walk(extractor2, t);
    walker.walk(extractor3, t);
    if(extractor3.getQuery()!=null)
      q.addAll(extractor3.getQuery());
    List<String> ret = registry.searchCandidates(q);


    // this shows the GUI

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    parser.setBuildParseTree(true);
    ParseTree tree = parser.mson();
    // show tree in text form
    // System.out.println(tree.toStringTree(parser));


    ParseTreeWalker walker = new ParseTreeWalker();
    SymbolTable symtab = new SymbolTable();
    DefPhase def = new DefPhase(symtab);
    walker.walk(def, tree);
    // create next phase and feed symbol table info from def to ref phase
    RefPhase ref = new RefPhase(symtab, def.scopes);
    walker.walk(ref, tree);
  }

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    semanticProcess(g);


    ParserATNFactory f = new ParserATNFactory(g);
    ATN atn = f.createATN();


    DOTGenerator dot = new DOTGenerator(g);


    Rule r = g.getRule("a");
    if ( r!=null) System.out.println(dot.getDOT(atn.ruleToStartState[r.index]));
    r = g.getRule("b");
    if ( r!=null) System.out.println(dot.getDOT(atn.ruleToStartState[r.index]));
    r = g.getRule("e");
    if ( r!=null) System.out.println(dot.getDOT(atn.ruleToStartState[r.index]));
    r = g.getRule("ifstat");
    if ( r!=null) System.out.println(dot.getDOT(atn.ruleToStartState[r.index]));
    r = g.getRule("block");
    if ( r!=null) System.out.println(dot.getDOT(atn.ruleToStartState[r.index]));


    // Check ATN prediction
//    ParserATNSimulator interp = new ParserATNSimulator(atn);
    TokenStream input = new IntTokenStream(types);
    ParserInterpreterForTesting interp = new ParserInterpreterForTesting(g, input);

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      "0:A..A\n" +
      "0->2 EPSILON 0,0,0\n" +
      "2->3 NOT_SET 0,0,0\n" +
      "3->1 EPSILON 0,0,0\n";
    ATN atn = createATN(g, true);
    DOTGenerator gen = new DOTGenerator(g);
    System.out.println(gen.getDOT(atn.ruleToStartState[0]));
    String result = ATNSerializer.getDecoded(atn, Arrays.asList(g.getTokenNames()));
    assertEquals(expecting, result);
  }

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  protected void checkLexerMatches(LexerGrammar lg, String inputString, String expecting) {
    ATN atn = createATN(lg, true);
    CharStream input = new ANTLRInputStream(inputString);
    ATNState startState = atn.modeNameToStartState.get("DEFAULT_MODE");
    DOTGenerator dot = new DOTGenerator(lg);
    System.out.println(dot.getDOT(startState, true));


    List<String> tokenTypes = getTokenTypes(lg, atn, input);


    String result = Utils.join(tokenTypes.iterator(), ", ");
    System.out.println(tokenTypes);

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    }
    return filtered;
  }


  void checkRuleATN(Grammar g, String ruleName, String expecting) {
    DOTGenerator dot = new DOTGenerator(g);
    System.out.println(dot.getDOT(g.atn.ruleToStartState[g.getRule(ruleName).index]));


    Rule r = g.getRule(ruleName);
    ATNState startState = g.atn.ruleToStartState[r.index];
    ATNPrinter serializer = new ATNPrinter(g, startState);
    String result = serializer.asString();

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    }
    return null;
  }


  public void generateATNs(Grammar g) {
    DOTGenerator dotGenerator = new DOTGenerator(g);
    List<Grammar> grammars = new ArrayList<Grammar>();
    grammars.add(g);
    List<Grammar> imported = g.getAllImportedGrammars();
    if ( imported!=null ) grammars.addAll(imported);
    for (Grammar ig : grammars) {
      for (Rule r : ig.rules.values()) {
        try {
          String dot = dotGenerator.getDOT(g.atn.ruleToStartState[r.index], g.isLexer());
          if (dot != null) {
            writeDOTFile(g, r, dot);
          }
        }
                catch (IOException ioe) {

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    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);
  }

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Related Classes of org.antlr.v4.tool.DOTGenerator

org.antlr.runtime.ANTLRFileStream

org.antlr.runtime.ANTLRStringStream

org.antlr.runtime.CharStream

org.antlr.runtime.CommonToken

org.antlr.runtime.tree.CommonTree

org.antlr.runtime.tree.CommonTreeNodeStream

org.antlr.runtime.tree.Tree

org.antlr.runtime.tree.TreeVisitor

org.antlr.runtime.tree.TreeVisitorAction

org.antlr.v4.analysis.LeftRecursionDetector

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