Examples of org.codehaus.janino.util.Traverser

org.codehaus.janino.util.Traverser

This class traverses the subnodes of an AST. Derived classes may override individual methods to process specific nodes, e.g.:

 LocalClassDeclaration lcd = ...; lcd.accept(new Traverser() { int n = 0; public void traverseMethodDeclarator(Java.MethodDeclarator md) { ++this.n; super.traverseMethodDeclarator(md); } }.comprehensiveVisitor());

        
        cu = new Parser(new Scanner("", new ByteArrayInputStream(javaSource.getBytes()))).parseCompilationUnit();
        final ArrayList clsNames = new ArrayList();


        // Traverse it and count declarations.
        new Traverser(){
      public void traverseClassDeclaration(ClassDeclaration arg0) {
        clsNames.add(arg0.getClassName());
        super.traverseClassDeclaration(arg0);
      }
        }.traverseCompilationUnit(cu);

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        /**
         * Sets enclosing block statement for this object and all subordinate
         * {@link org.codehaus.janino.Java.Rvalue} objects.
         */
        public final void setEnclosingBlockStatement(final Java.BlockStatement enclosingBlockStatement) {
            this.accept((Visitor.RvalueVisitor) new Traverser() {
                public void traverseRvalue(Java.Rvalue rv) {
                    if (rv.enclosingBlockStatement != null && enclosingBlockStatement != rv.enclosingBlockStatement) {
                        throw new JaninoRuntimeException(
                            "Enclosing block statement for rvalue \""
                            + rv

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                class UCE extends RuntimeException {
                    final CompileException ce;
                    UCE(CompileException ce) { this.ce = ce; }
                }
                try {
                    new Traverser() {


                        // "method(...)", "x.method(...)"
                        public void traverseMethodInvocation(Java.MethodInvocation mi) {
                            try {
                                this.match(mi, uc.findIMethod(mi));

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            throw new CompileException("Unexpected token \"" + scanner.peek() + "\"", scanner.location());
        }


        // Traverse the expression for ambiguous names and guess which of them are parameter names.
        final Set parameterNames = new HashSet();
        rvalue.accept((RvalueVisitor) new Traverser() {
            public void traverseAmbiguousName(AmbiguousName an) {


                // If any of the components starts with an upper-case letter, then the ambiguous
                // name is most probably a type name, e.g. "System.out" or "java.lang.System.out".
                for (int i = 0; i < an.identifiers.length; ++i) {

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        while (!scanner.peek().isEOF()) block.addStatement(parser.parseBlockStatement());


        // Traverse the block for ambiguous names and guess which of them are parameter names.
        final Set localVariableNames = new HashSet();
        final Set parameterNames = new HashSet();
        new Traverser() {
            public void traverseLocalVariableDeclarationStatement(LocalVariableDeclarationStatement lvds) {
                for (int i = 0; i < lvds.variableDeclarators.length; ++i) {
                    localVariableNames.add(lvds.variableDeclarators[i].name);
                }
                super.traverseLocalVariableDeclarationStatement(lvds);

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Related Classes of org.codehaus.janino.util.Traverser

org.codehaus.janino.ExpressionEvaluator

org.codehaus.janino.Java$Rvalue

org.codehaus.janino.ScriptEvaluator

org.codehaus.janino.tools.JGrep

org.uengine.contexts.ComplexType

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