Package org.antlr.runtime.tree

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

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  public static void validateNoLeadLagInValueBoundarySpec(ASTNode node)
      throws SemanticException {
    String errMsg = "Lead/Lag not allowed in ValueBoundary Spec";
    TreeWizard tw = new TreeWizard(ParseDriver.adaptor, HiveParser.tokenNames);
    ValidateNoLeadLag visitor = new ValidateNoLeadLag(errMsg);
    tw.visit(node, HiveParser.TOK_FUNCTION, visitor);
    visitor.checkValid();
  }

  public static class ValidateNoLeadLag implements ContextVisitor {
    String errMsg;
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    public void rewrite(TreeAdaptor adaptor, CommonTree t, String[] tokenNames) throws Exception {
        TreeWizard wiz = new TreeWizard(adaptor, tokenNames);

        // ACTIONS STUFF
        wiz.visit(t, ANTLRv3Parser.ACTION,
           new TreeWizard.Visitor() {
      @Override
               public void visit(Object t) { ACTION(tokens, (CommonTree)t); }
           });
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           new TreeWizard.Visitor() {
      @Override
               public void visit(Object t) { ACTION(tokens, (CommonTree)t); }
           });

        wiz.visit(t, ANTLRv3Parser.AT,  // ^('@' id ACTION) rule actions
            new TreeWizard.Visitor() {
      @Override
              public void visit(Object t) {
                  CommonTree a = (CommonTree)t;
                  CommonTree action = null;
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                                    a.getTokenStopIndex());
                      killTrailingNewline(tokens, action.getTokenStopIndex());
                  }
              }
            });
        wiz.visit(t, ANTLRv3Parser.ARG, // wipe rule arguments
                  new TreeWizard.Visitor() {
      @Override
              public void visit(Object t) {
                  CommonTree a = (CommonTree)t;
                  a = (CommonTree)a.getChild(0);
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                  a = (CommonTree)a.getChild(0);
                  tokens.delete(a.token.getTokenIndex());
                  killTrailingNewline(tokens, a.token.getTokenIndex());
              }
            });
        wiz.visit(t, ANTLRv3Parser.RET, // wipe rule return declarations
            new TreeWizard.Visitor() {
      @Override
                public void visit(Object t) {
                    CommonTree a = (CommonTree)t;
                    CommonTree ret = (CommonTree)a.getChild(0);
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                    CommonTree ret = (CommonTree)a.getChild(0);
                    tokens.delete(a.token.getTokenIndex(),
                                  ret.token.getTokenIndex());
                }
            });
        wiz.visit(t, ANTLRv3Parser.SEMPRED, // comment out semantic predicates
            new TreeWizard.Visitor() {
      @Override
                public void visit(Object t) {
                    CommonTree a = (CommonTree)t;
                    tokens.replace(a.token.getTokenIndex(), "/*"+a.getText()+"*/");
 
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                public void visit(Object t) {
                    CommonTree a = (CommonTree)t;
                    tokens.replace(a.token.getTokenIndex(), "/*"+a.getText()+"*/");
                }
            });
        wiz.visit(t, ANTLRv3Parser.GATED_SEMPRED, // comment out semantic predicates
            new TreeWizard.Visitor() {
      @Override
                public void visit(Object t) {
                    CommonTree a = (CommonTree)t;
                    String text = tokens.toString(a.getTokenStartIndex(),
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                    tokens.replace(a.getTokenStartIndex(),
                                   a.getTokenStopIndex(),
                                   "/*"+text+"*/");
                }
            });
        wiz.visit(t, ANTLRv3Parser.SCOPE, // comment scope specs
            new TreeWizard.Visitor() {
      @Override
                public void visit(Object t) {
                    CommonTree a = (CommonTree)t;
                    tokens.delete(a.getTokenStartIndex(),
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                    tokens.delete(a.getTokenStartIndex(),
                                  a.getTokenStopIndex());
                    killTrailingNewline(tokens, a.getTokenStopIndex());
                }
            });       
        wiz.visit(t, ANTLRv3Parser.ARG_ACTION, // args r[x,y] -> ^(r [x,y])
            new TreeWizard.Visitor() {
      @Override
                public void visit(Object t) {
                    CommonTree a = (CommonTree)t;
                    if ( a.getParent().getType()==ANTLRv3Parser.RULE_REF ) {
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                        tokens.delete(a.getTokenStartIndex(),
                                      a.getTokenStopIndex());
                    }
                }
            });
        wiz.visit(t, ANTLRv3Parser.LABEL_ASSIGN, // ^('=' id ^(RULE_REF [arg])), ...
            new TreeWizard.Visitor() {
      @Override
                public void visit(Object t) {
                    CommonTree a = (CommonTree)t;
                    if ( !a.hasAncestor(ANTLRv3Parser.OPTIONS) ) { // avoid options
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