+++ /dev/null
-/*******************************************************************************
- * 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.
- *
- * <pre>
- * ThisExpression:
- * [ ClassName <b>.</b> ] <b>this</b>
- * </pre>
- * <p>
- * See <code>FieldAccess</code> for guidelines on handling other expressions
- * that resemble qualified names.
- * </p>
- *
- * @see FieldAccess
- * @since 2.0
- * @noinstantiate This class is not intended to be instantiated by clients.
- */
-public class ThisExpression extends Expression {
-
- /**
- * The "qualifier" structural property of this node type.
- * @since 3.0
- */
- public static final ChildPropertyDescriptor QUALIFIER_PROPERTY =
- new ChildPropertyDescriptor(ThisExpression.class, "qualifier", Name.class, OPTIONAL, NO_CYCLE_RISK); //$NON-NLS-1$
-
- /**
- * A list of property descriptors (element type:
- * {@link StructuralPropertyDescriptor}),
- * or null if uninitialized.
- */
- private static final List PROPERTY_DESCRIPTORS;
-
- static {
- List propertyList = new ArrayList(2);
- createPropertyList(ThisExpression.class, propertyList);
- addProperty(QUALIFIER_PROPERTY, propertyList);
- PROPERTY_DESCRIPTORS = reapPropertyList(propertyList);
- }
-
- /**
- * Returns a list of structural property descriptors for this node type.
- * Clients must not modify the result.
- *
- * @param apiLevel the API level; one of the
- * <code>AST.JLS*</code> 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; <code>null</code> 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
- * <code>null</code> if there is none.
- *
- * @return the qualifier name node, or <code>null</code> 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 <code>null</code> if
- * there is none
- * @exception IllegalArgumentException if:
- * <ul>
- * <li>the node belongs to a different AST</li>
- * <li>the node already has a parent</li>
- * </ul>
- */
- public void setQualifier(Name name) {
- ASTNode oldChild = this.optionalQualifier;
- preReplaceChild(oldChild, name, QUALIFIER_PROPERTY);
- this.optionalQualifier = name;
- postReplaceChild(oldChild, name, QUALIFIER_PROPERTY);
- }
-
- /* (omit javadoc for this method)
- * Method declared on ASTNode.
- */
- int memSize() {
- // treat Operator as free
- return BASE_NODE_SIZE + 1 * 4;
- }
-
- /* (omit javadoc for this method)
- * Method declared on ASTNode.
- */
- int treeSize() {
- return
- memSize()
- + (this.optionalQualifier == null ? 0 : getQualifier().treeSize());
- }
-}
git://git.phpeclipse.com / phpeclipse.git / blobdiff