Examples of org.antlr.runtime.tree.TreeAdaptor

org.antlr.runtime.tree.TreeAdaptor
How to create and navigate trees. Rather than have a separate factory and adaptor, I've merged them. Makes sense to encapsulate. This takes the place of the tree construction code generated in the generated code in 2.x and the ASTFactory. I do not need to know the type of a tree at all so they are all generic Objects. This may increase the amount of typecasting needed. :(

            parser = classForName(parserName).asSubclass(Parser.class);
            Constructor<? extends Parser> parConstructor = parser.getConstructor(TokenStream.class);
            Parser parObj = parConstructor.newInstance(tokens);        // makes new instance of parser


            // set up customized tree adaptor if necessary
            TreeAdaptor customTreeAdaptor = null;
            if ( grammarInfo.getAdaptor()!=null ) {
              Method _setTreeAdaptor = parser.getMethod("setTreeAdaptor", TreeAdaptor.class);
              Class<? extends TreeAdaptor> _treeAdaptor = classForName(grammarInfo.getAdaptor()).asSubclass(TreeAdaptor.class);
              customTreeAdaptor = _treeAdaptor.newInstance();
              _setTreeAdaptor.invoke(parObj, customTreeAdaptor);

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    CommonTree oldRoot = new CommonTree((Token)null);
    oldRoot.addChild(new CommonTree(new CommonToken(101)));
    oldRoot.addChild(new CommonTree(new CommonToken(102)));
    oldRoot.addChild(new CommonTree(new CommonToken(103)));


    TreeAdaptor adaptor = new CommonTreeAdaptor();
    adaptor.becomeRoot(newRoot, oldRoot);
    newRoot.sanityCheckParentAndChildIndexes();
  }

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    CommonTree oldRoot = new CommonTree(new CommonToken(101));
    oldRoot.addChild(new CommonTree(new CommonToken(102)));
    oldRoot.addChild(new CommonTree(new CommonToken(103)));


    TreeAdaptor adaptor = new CommonTreeAdaptor();
    adaptor.becomeRoot(newRoot, oldRoot);
    newRoot.sanityCheckParentAndChildIndexes();
  }

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    CommonTree oldRoot = new CommonTree((Token)null);
    oldRoot.addChild(new CommonTree(new CommonToken(101)));
    oldRoot.addChild(new CommonTree(new CommonToken(102)));
    oldRoot.addChild(new CommonTree(new CommonToken(103)));


    TreeAdaptor adaptor = new CommonTreeAdaptor();
    adaptor.becomeRoot(newRoot, oldRoot);
    newRoot.sanityCheckParentAndChildIndexes();
  }

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    CommonTree oldRoot = new CommonTree(new CommonToken(101));
    oldRoot.addChild(new CommonTree(new CommonToken(102)));
    oldRoot.addChild(new CommonTree(new CommonToken(103)));


    TreeAdaptor adaptor = new CommonTreeAdaptor();
    adaptor.becomeRoot(newRoot, oldRoot);
    newRoot.sanityCheckParentAndChildIndexes();
  }

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            Constructor parConstructor = parser.getConstructor(parArgTypes);
            Object[] parArgs = new Object[]{tokens};              // assign value to parser's args
            Object parObj = parConstructor.newInstance(parArgs);        // makes new instance of parser


            // set up customized tree adaptor if necessary
            TreeAdaptor customTreeAdaptor = null;
            if ( grammarInfo.getAdaptor()!=null ) {
              parArgTypes = new Class[]{TreeAdaptor.class};
              Method _setTreeAdaptor = parser.getMethod("setTreeAdaptor", parArgTypes);
              Class _treeAdaptor = classForName(grammarInfo.getAdaptor());
              customTreeAdaptor = (TreeAdaptor) _treeAdaptor.newInstance();

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            Constructor parConstructor = parser.getConstructor(parArgTypes);
            Object[] parArgs = new Object[]{tokens};              // assign value to parser's args  
            Object parObj = parConstructor.newInstance(parArgs);        // makes new instance of parser      
            
            // set up customized tree adaptor if necessary
            TreeAdaptor customTreeAdaptor = null; 
            if ( treeAdaptorPath!=null ) {
              parArgTypes = new Class[]{TreeAdaptor.class};
              Method _setTreeAdaptor = parser.getMethod("setTreeAdaptor", parArgTypes);
              Class _treeAdaptor = Class.forName(treeAdaptorPath);
              customTreeAdaptor = (TreeAdaptor) _treeAdaptor.newInstance();

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            Constructor parConstructor = parser.getConstructor(parArgTypes);
            Object[] parArgs = new Object[]{tokens};              // assign value to parser's args
            Object parObj = parConstructor.newInstance(parArgs);        // makes new instance of parser


            // set up customized tree adaptor if necessary
            TreeAdaptor customTreeAdaptor = null;
            if ( grammarInfo.getAdaptor()!=null ) {
              parArgTypes = new Class[]{TreeAdaptor.class};
              Method _setTreeAdaptor = parser.getMethod("setTreeAdaptor", parArgTypes);
              Class _treeAdaptor = classForName(grammarInfo.getAdaptor());
              customTreeAdaptor = (TreeAdaptor) _treeAdaptor.newInstance();

View Full Code Here

    CommonTree oldRoot = new CommonTree((Token)null);
    oldRoot.addChild(new CommonTree(new CommonToken(101)));
    oldRoot.addChild(new CommonTree(new CommonToken(102)));
    oldRoot.addChild(new CommonTree(new CommonToken(103)));


    TreeAdaptor adaptor = new CommonTreeAdaptor();
    adaptor.becomeRoot(newRoot, oldRoot);
    newRoot.sanityCheckParentAndChildIndexes();
  }

View Full Code Here


    CommonTree oldRoot = new CommonTree(new CommonToken(101));
    oldRoot.addChild(new CommonTree(new CommonToken(102)));
    oldRoot.addChild(new CommonTree(new CommonToken(103)));


    TreeAdaptor adaptor = new CommonTreeAdaptor();
    adaptor.becomeRoot(newRoot, oldRoot);
    newRoot.sanityCheckParentAndChildIndexes();
  }

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