Examples of org.antlr.runtime.tree.TreeVisitorAction

org.antlr.runtime.tree.TreeVisitorAction
How to execute code for node t when a visitor visits node t. Execute pre() before visiting children and execute post() after visiting children.

     *  Parameter must be a token.
     *  todo: do we want?
     */
    public void expandParameterizedLoops(GrammarAST root) {
        TreeVisitor v = new TreeVisitor(new GrammarASTAdaptor());
        v.visit(root, new TreeVisitorAction() {
            @Override
            public Object pre(Object t) {
                if ( ((GrammarAST)t).getType() == 3 ) {
                    return expandParameterizedLoop((GrammarAST)t);
                }

View Full Code Here

    /** 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; }
    });

View Full Code Here

        if (!aggExprs.contains(selAST.toStringTree().toLowerCase())) {
          continue;
        }
        final String aliasToCheck = selExpr.getValue();
        final Set<Object> aliasReferences = new HashSet<Object>();
        TreeVisitorAction action = new TreeVisitorAction() {


          @Override
          public Object pre(Object t) {
            if (ParseDriver.adaptor.getType(t) == HiveParser.TOK_TABLE_OR_COL) {
              Object c = ParseDriver.adaptor.getChild(t, 0);

View Full Code Here

TOP

Related Classes of org.antlr.runtime.tree.TreeVisitorAction

org.antlr.v4.tool.GrammarTransformPipeline

org.apache.hadoop.hive.ql.parse.SemanticAnalyzer$OptiqBasedPlanner

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.