Examples of org.antlr.runtime.tree.TreeWizard.visit()

org.antlr.runtime.tree.TreeWizard.visit()
Visit every ttype node in t, invoking the visitor. This is a quicker version of the general visit(t, pattern) method. The labels arg of the visitor action method is never set (it's null) since using a token type rather than a pattern doesn't let us set a label.


  @Test public void testVisitPattern() throws Exception {
    TreeWizard wiz = new TreeWizard(adaptor, tokens);
    CommonTree t = (CommonTree)wiz.create("(A B C (A B) D)");
    final List<Object> elements = new ArrayList<Object>();
    wiz.visit(t, "(A B)",
             new TreeWizard.Visitor() {
              @Override
              public void visit(Object t) {
                elements.add(t);
              }

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  @Test public void testVisitPatternMultiple() throws Exception {
    TreeWizard wiz = new TreeWizard(adaptor, tokens);
    CommonTree t = (CommonTree)wiz.create("(A B C (A B) (D (A B)))");
    final List<String> elements = new ArrayList<String>();
    wiz.visit(t, "(A B)",
             new TreeWizard.ContextVisitor() {
               @Override
               public void visit(Object t, Object parent, int childIndex, Map<String, Object> labels) {
                 elements.add(adaptor.getText(t)+"@"+
                      (parent!=null?adaptor.getText(parent):"nil")+

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  @Test public void testVisitPatternMultipleWithLabels() throws Exception {
    TreeWizard wiz = new TreeWizard(adaptor, tokens);
    CommonTree t = (CommonTree)wiz.create("(A B C (A[foo] B[bar]) (D (A[big] B[dog])))");
    final List<String> elements = new ArrayList<String>();
    wiz.visit(t, "(%a:A %b:B)",
             new TreeWizard.ContextVisitor() {
               @Override
               public void visit(Object t, Object parent, int childIndex, Map<String, Object> labels) {
                 elements.add(adaptor.getText(t)+"@"+
                      (parent!=null?adaptor.getText(parent):"nil")+

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  @Test public void testNoRepeatsVisit() throws Exception {
    TreeWizard wiz = new TreeWizard(adaptor, tokens);
    CommonTree t = (CommonTree)wiz.create("(A B C D)");
    final List elements = new ArrayList();
    wiz.visit(t, wiz.getTokenType("B"), new TreeWizard.Visitor() {
      public void visit(Object t) {
        elements.add(t);
      }
    });
    String found = elements.toString();

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  @Test public void testNoRepeatsVisit2() throws Exception {
    TreeWizard wiz = new TreeWizard(adaptor, tokens);
    CommonTree t = (CommonTree)wiz.create("(A B (A C B) B D D)");
    final List elements = new ArrayList();
    wiz.visit(t, wiz.getTokenType("C"),
             new TreeWizard.Visitor() {
              public void visit(Object t) {
                elements.add(t);
              }
             });

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  @Test public void testRepeatsVisit() throws Exception {
    TreeWizard wiz = new TreeWizard(adaptor, tokens);
    CommonTree t = (CommonTree)wiz.create("(A B (A C B) B D D)");
    final List elements = new ArrayList();
    wiz.visit(t, wiz.getTokenType("B"),
             new TreeWizard.Visitor() {
              public void visit(Object t) {
                elements.add(t);
              }
             });

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  @Test public void testRepeatsVisit2() throws Exception {
    TreeWizard wiz = new TreeWizard(adaptor, tokens);
    CommonTree t = (CommonTree)wiz.create("(A B (A C B) B D D)");
    final List elements = new ArrayList();
    wiz.visit(t, wiz.getTokenType("A"),
             new TreeWizard.Visitor() {
              public void visit(Object t) {
                elements.add(t);
              }
             });

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  @Test public void testRepeatsVisitWithContext() throws Exception {
    TreeWizard wiz = new TreeWizard(adaptor, tokens);
    CommonTree t = (CommonTree)wiz.create("(A B (A C B) B D D)");
    final List elements = new ArrayList();
    wiz.visit(t, wiz.getTokenType("B"),
       new TreeWizard.ContextVisitor() {
         public void visit(Object t, Object parent, int childIndex, Map labels) {
           elements.add(adaptor.getText(t)+"@"+
                (parent!=null?adaptor.getText(parent):"nil")+
                "["+childIndex+"]");

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  @Test public void testRepeatsVisitWithNullParentAndContext() throws Exception {
    TreeWizard wiz = new TreeWizard(adaptor, tokens);
    CommonTree t = (CommonTree)wiz.create("(A B (A C B) B D D)");
    final List elements = new ArrayList();
    wiz.visit(t, wiz.getTokenType("A"),
       new TreeWizard.ContextVisitor() {
         public void visit(Object t, Object parent, int childIndex, Map labels) {
           elements.add(adaptor.getText(t)+"@"+
                (parent!=null?adaptor.getText(parent):"nil")+
                "["+childIndex+"]");

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  @Test public void testVisitPattern() throws Exception {
    TreeWizard wiz = new TreeWizard(adaptor, tokens);
    CommonTree t = (CommonTree)wiz.create("(A B C (A B) D)");
    final List elements = new ArrayList();
    wiz.visit(t, "(A B)",
             new TreeWizard.Visitor() {
              public void visit(Object t) {
                elements.add(t);
              }
             });

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