/******************************************************************************* * Copyright (c) 2000, 2008 IBM Corporation and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * IBM Corporation - initial API and implementation *******************************************************************************/ package net.sourceforge.phpdt.core.dom; import java.util.ArrayList; import java.util.List; /** * Simple or qualified "this" AST node type. * *
* ThisExpression: * [ ClassName . ] this **
* See FieldAccess
for guidelines on handling other expressions
* that resemble qualified names.
*
AST.JLS*
constants
* @return a list of property descriptors (element type:
* {@link StructuralPropertyDescriptor})
* @since 3.0
*/
public static List propertyDescriptors(int apiLevel) {
return PROPERTY_DESCRIPTORS;
}
/**
* The optional qualifier; null
for none; defaults to none.
*/
private Name optionalQualifier = null;
/**
* Creates a new AST node for a "this" expression owned by the
* given AST. By default, there is no qualifier.
*
* @param ast the AST that is to own this node
*/
ThisExpression(AST ast) {
super(ast);
}
/* (omit javadoc for this method)
* Method declared on ASTNode.
*/
final List internalStructuralPropertiesForType(int apiLevel) {
return propertyDescriptors(apiLevel);
}
/* (omit javadoc for this method)
* Method declared on ASTNode.
*/
final ASTNode internalGetSetChildProperty(ChildPropertyDescriptor property, boolean get, ASTNode child) {
if (property == QUALIFIER_PROPERTY) {
if (get) {
return getQualifier();
} else {
setQualifier((Name) child);
return null;
}
}
// allow default implementation to flag the error
return super.internalGetSetChildProperty(property, get, child);
}
/* (omit javadoc for this method)
* Method declared on ASTNode.
*/
final int getNodeType0() {
return THIS_EXPRESSION;
}
/* (omit javadoc for this method)
* Method declared on ASTNode.
*/
ASTNode clone0(AST target) {
ThisExpression result = new ThisExpression(target);
result.setSourceRange(this.getStartPosition(), this.getLength());
result.setQualifier((Name) ASTNode.copySubtree(target, getQualifier()));
return result;
}
/* (omit javadoc for this method)
* Method declared on ASTNode.
*/
final boolean subtreeMatch0(ASTMatcher matcher, Object other) {
// dispatch to correct overloaded match method
return matcher.match(this, other);
}
/* (omit javadoc for this method)
* Method declared on ASTNode.
*/
void accept0(ASTVisitor visitor) {
boolean visitChildren = visitor.visit(this);
if (visitChildren) {
acceptChild(visitor, getQualifier());
}
visitor.endVisit(this);
}
/**
* Returns the qualifier of this "this" expression, or
* null
if there is none.
*
* @return the qualifier name node, or null
if there is none
*/
public Name getQualifier() {
return this.optionalQualifier;
}
/**
* Sets or clears the qualifier of this "this" expression.
*
* @param name the qualifier name node, or null
if
* there is none
* @exception IllegalArgumentException if:
*