Examples of org.antlr.v4.codegen.model.CodeBlockForAlt

org.antlr.v4.runtime.ParserRuleContext
Contains Rewrite block (usually as last op)


    /** Utility visitor that sets grammar ptr in each node */
  public static void setGrammarPtr(final Grammar g, GrammarAST tree) {
    if ( tree==null ) return;
    // ensure each node has pointer to surrounding grammar
    TreeVisitor v = new TreeVisitor(new GrammarASTAdaptor());
    v.visit(tree, new TreeVisitorAction() {
      @Override
      public Object pre(Object t) { ((GrammarAST)t).g = g; return t; }
      @Override
      public Object post(Object t) { return t; }

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    List<Grammar> imports = rootGrammar.getAllImportedGrammars();
    if ( imports==null ) return;


    GrammarAST root = rootGrammar.ast;
    GrammarAST id = (GrammarAST) root.getChild(0);
    GrammarASTAdaptor adaptor = new GrammarASTAdaptor(id.token.getInputStream());


     GrammarAST tokensRoot = (GrammarAST)root.getFirstChildWithType(ANTLRParser.TOKENS_SPEC);


    List<GrammarAST> actionRoots = root.getNodesWithType(ANTLRParser.AT);


    // Compute list of rules in root grammar and ensure we have a RULES node
    GrammarAST RULES = (GrammarAST)root.getFirstChildWithType(ANTLRParser.RULES);
    Set<String> rootRuleNames = new HashSet<String>();
    if ( RULES==null ) { // no rules in root, make RULES node, hook in
      RULES = (GrammarAST)adaptor.create(ANTLRParser.RULES, "RULES");
      RULES.g = rootGrammar;
      root.addChild(RULES);
    }
    else {
      // make list of rules we have in root grammar
      List<GrammarAST> rootRules = RULES.getNodesWithType(ANTLRParser.RULE);
      for (GrammarAST r : rootRules) rootRuleNames.add(r.getChild(0).getText());
    }


    for (Grammar imp : imports) {
      // COPY TOKENS
      GrammarAST imp_tokensRoot = (GrammarAST)imp.ast.getFirstChildWithType(ANTLRParser.TOKENS_SPEC);
      if ( imp_tokensRoot!=null ) {
        rootGrammar.tool.log("grammar", "imported tokens: "+imp_tokensRoot.getChildren());
        if ( tokensRoot==null ) {
          tokensRoot = (GrammarAST)adaptor.create(ANTLRParser.TOKENS_SPEC, "TOKENS");
          tokensRoot.g = rootGrammar;
          root.insertChild(1, tokensRoot); // ^(GRAMMAR ID TOKENS...)
        }
        tokensRoot.addChildren(Arrays.asList(imp_tokensRoot.getChildren().toArray(new Tree[0])));
      }

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    ClassUtils cu = new ClassUtils();
    setup(cu);
    registry.clearForType(JavaCompletionTypes.CUSTOM_TYPE);
    registry.clearForType(JavaCompletionTypes.FIELD);
    registry.clearForType(JavaCompletionTypes.NAME);
    Lexer lexer = new JavaLexer(new ANTLRInputStream(txt));
    CommonTokenStream tokens = new CommonTokenStream(lexer);


    // Create a parser that reads from the scanner
    JavaParser parser = new JavaParser(tokens);
    parser.removeErrorListeners();

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  @Test
  public void Process() throws IOException {
    InputStream is = CheckSymbols.class.getResource("/Mson.js")
        .openStream();
    ANTLRInputStream input = new ANTLRInputStream(is);
    MsonLexer lexer = new MsonLexer(input);
//    SymbolASTFactory factory = new SymbolASTFactory();
//    lexer.setTokenFactory(factory);
    CommonTokenStream tokens = new CommonTokenStream(lexer);

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    setup(cu);
    registry.clearForType(JavaCompletionTypes.CUSTOM_TYPE);
    registry.clearForType(JavaCompletionTypes.FIELD);
    registry.clearForType(JavaCompletionTypes.NAME);
    Lexer lexer = new JavaLexer(new ANTLRInputStream(txt));
    CommonTokenStream tokens = new CommonTokenStream(lexer);


    // Create a parser that reads from the scanner
    JavaParser parser = new JavaParser(tokens);
    parser.removeErrorListeners();

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        .openStream();
    ANTLRInputStream input = new ANTLRInputStream(is);
    MsonLexer lexer = new MsonLexer(input);
//    SymbolASTFactory factory = new SymbolASTFactory();
//    lexer.setTokenFactory(factory);
    CommonTokenStream tokens = new CommonTokenStream(lexer);
    
    MsonParser parser = new MsonParser(tokens);
//    parser.setTokenFactory(factory);
    parser.addErrorListener(new DiagnosticErrorListener());
    parser.getInterpreter().setPredictionMode(

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//    lexer.setTokenFactory(factory);
    CommonTokenStream tokens = new CommonTokenStream(lexer);
    
    MsonParser parser = new MsonParser(tokens);
//    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

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    ClassUtils cu = new ClassUtils();
    setup(cu);
    registry.clearForType(JavaCompletionTypes.CUSTOM_TYPE);
    registry.clearForType(JavaCompletionTypes.FIELD);
    registry.clearForType(JavaCompletionTypes.NAME);
    Lexer lexer = new JavaLexer(new ANTLRInputStream(txt));
    CommonTokenStream tokens = new CommonTokenStream(lexer);


    // Create a parser that reads from the scanner
    JavaParser parser = new JavaParser(tokens);
    parser.removeErrorListeners();

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    // Create a parser that reads from the scanner
    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 );

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    isKeywords = false;
  }


  @Override
  public void enterPackage(@NotNull PackageContext ctx) {
    ParserRuleContext prc = ctx.getParent();
    if (!(prc instanceof DomainArrayContext)) {
      return;
    }
    DomainArrayContext dac = (DomainArrayContext) prc;
    DomainHeaderContext dhctx = (DomainHeaderContext) dac.getChild(0);

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Related Classes of org.antlr.v4.codegen.model.CodeBlockForAlt

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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