org.eclipse.jdt.core.dom.ASTNode#setStructuralProperty ( )源码实例Demo

/**
 * Replaces a node in an AST with another node. If the replacement is successful the original node
 * is deleted.
 *
 * @param node
 *          The node to replace.
 * @param replacement
 *          The replacement node.
 * @return <code>true</code> if the node was successfully replaced.
 */
protected boolean replace(final ASTNode node, final ASTNode replacement) {
  final ASTNode parent = node.getParent();
  final StructuralPropertyDescriptor descriptor = node.getLocationInParent();
  if (descriptor != null) {
    if (descriptor.isChildProperty()) {
      parent.setStructuralProperty(descriptor, replacement);
      node.delete();
      return true;
    } else if (descriptor.isChildListProperty()) {
      @SuppressWarnings("unchecked")
      final List<ASTNode> children = (List<ASTNode>) parent.getStructuralProperty(descriptor);
      children.set(children.indexOf(node), replacement);
      node.delete();
      return true;
    }
  }
  return false;
}
 

/**
 * Replaces a node in an AST with another node. If the replacement is successful
 * the original node is deleted.
 *
 * @param node        The node to replace.
 * @param replacement The replacement node.
 * @return <code>true</code> if the node was successfully replaced.
 */
protected boolean replace(final ASTNode node, final ASTNode replacement) {
    final ASTNode parent = node.getParent();
    final StructuralPropertyDescriptor descriptor = node.getLocationInParent();
    if (descriptor != null) {
        if (descriptor.isChildProperty()) {
            parent.setStructuralProperty(descriptor, replacement);
            node.delete();
            return true;
        } else if (descriptor.isChildListProperty()) {
            @SuppressWarnings("unchecked")
            final List<ASTNode> children = (List<ASTNode>) parent.getStructuralProperty(descriptor);
            children.set(children.indexOf(node), replacement);
            node.delete();
            return true;
        }
    }
    return false;
}
 

public void replace(ASTNode old, ASTNode neww) {
		
//		if(!copyStack.isEmpty()) {
//			if(copyStack.get(copyStack.size()-1) == old) {
//				copyStack.set(copyStack.size()-1, neww);
//				Log.err("COPY STACK REPLACE");
//				Object oldProp = old.getProperty(TYPEBIND_PROP);
//				if(oldProp != null && neww.getProperty(TYPEBIND_PROP) == null) {
//					Log.err("   copy old prop");
//					neww.setProperty(TYPEBIND_PROP, oldProp);
//				}
//				Object oldProp2 = old.getProperty(TYPEBIND_METHOD_TMP);
//				if(oldProp2 != null && neww.getProperty(TYPEBIND_METHOD_TMP) == null) {
//					Log.err("   copy old prop2");
//					neww.setProperty(TYPEBIND_METHOD_TMP, oldProp2);
//				}
//				return;
//			}
//		}
		old.setProperty(IS_REPLACE, neww);
		ASTNode parent = old.getParent();
		StructuralPropertyDescriptor desc = old.getLocationInParent();
		if(desc instanceof ChildListPropertyDescriptor) {
			ChildListPropertyDescriptor ch = (ChildListPropertyDescriptor)desc;
			List<ASTNode> list = (List)parent.getStructuralProperty(ch);
			
			int index = list.indexOf(old);
			list.set(index, neww);			
		}
		else {
			if(parent instanceof QualifiedName && 
					QualifiedName.QUALIFIER_PROPERTY.getId().equals(desc.getId()) &&
				!(neww instanceof SimpleName)) {
				if(!(neww instanceof Expression))throw new IllegalArgumentException();
				//QualifiedName has to be changed to FieldAccess
				
//				throw new IllegalArgumentException("qual name expression");
				FieldAccess fa = ast.newFieldAccess();
				fa.setExpression((Expression)neww);
				fa.setName((SimpleName)copySubtreeIfHasParent(((QualifiedName)parent).getName()));
				
//				for(Map.Entry ee : (Set<Map.Entry>)parent.properties().entrySet()) {
//					Log.err("ee " + ee.getKey());
//				}
				if(parent.getProperty(TYPEBIND_PROP) == null) 
					fa.setProperty(TYPEBIND_PROP, parent.getProperty(TYPEBIND_PROP));
					
				replace(parent, fa);
				return;
			}
			parent.setStructuralProperty(desc, neww);
		}		
	}