+++ /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;
-
-/**
- * Switch case AST node type. A switch case is a special kind of node used only
- * in switch statements. It is a <code>Statement</code> in name only.
- * <p>
- * <pre>
- * SwitchCase:
- * <b>case</b> Expression <b>:</b>
- * <b>default</b> <b>:</b>
- * </pre>
- * </p>
- *
- * @since 2.0
- * @noinstantiate This class is not intended to be instantiated by clients.
- */
-public class SwitchCase extends Statement {
-
- /**
- * The "expression" structural property of this node type.
- * @since 3.0
- */
- public static final ChildPropertyDescriptor EXPRESSION_PROPERTY =
- new ChildPropertyDescriptor(SwitchCase.class, "expression", Expression.class, OPTIONAL, 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(SwitchCase.class, propertyList);
- addProperty(EXPRESSION_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 expression; <code>null</code> for none; lazily initialized (but
- * does <b>not</b> default to none).
- * @see #expressionInitialized
- */
- private Expression optionalExpression = null;
-
- /**
- * Indicates whether <code>optionalExpression</code> has been initialized.
- */
- private boolean expressionInitialized = false;
-
- /**
- * Creates a new AST node for a switch case pseudo-statement owned by the
- * given AST. By default, there is an unspecified, but legal, expression.
- *
- * @param ast the AST that is to own this node
- */
- SwitchCase(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 == EXPRESSION_PROPERTY) {
- if (get) {
- return getExpression();
- } else {
- setExpression((Expression) 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 SWITCH_CASE;
- }
-
- /* (omit javadoc for this method)
- * Method declared on ASTNode.
- */
- ASTNode clone0(AST target) {
- SwitchCase result = new SwitchCase(target);
- result.setSourceRange(this.getStartPosition(), this.getLength());
- result.copyLeadingComment(this);
- result.setExpression(
- (Expression) ASTNode.copySubtree(target, getExpression()));
- 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, getExpression());
- }
- visitor.endVisit(this);
- }
-
- /**
- * Returns the expression of this switch case, or
- * <code>null</code> if there is none (the "default:" case).
- *
- * @return the expression node, or <code>null</code> if there is none
- */
- public Expression getExpression() {
- if (!this.expressionInitialized) {
- // lazy init must be thread-safe for readers
- synchronized (this) {
- if (!this.expressionInitialized) {
- preLazyInit();
- this.optionalExpression = new SimpleName(this.ast);
- this.expressionInitialized = true;
- postLazyInit(this.optionalExpression, EXPRESSION_PROPERTY);
- }
- }
- }
- return this.optionalExpression;
- }
-
- /**
- * Sets the expression of this switch case, or clears it (turns it into
- * the "default:" case).
- *
- * @param expression the expression node, or <code>null</code> to
- * turn it into the "default:" case
- * @exception IllegalArgumentException if:
- * <ul>
- * <li>the node belongs to a different AST</li>
- * <li>the node already has a parent</li>
- * <li>a cycle in would be created</li>
- * </ul>
- */
- public void setExpression(Expression expression) {
- ASTNode oldChild = this.optionalExpression;
- preReplaceChild(oldChild, expression, EXPRESSION_PROPERTY);
- this.optionalExpression = expression;
- this.expressionInitialized = true;
- postReplaceChild(oldChild, expression, EXPRESSION_PROPERTY);
- }
-
- /**
- * Returns whether this switch case represents the "default:" case.
- * <p>
- * This convenience method is equivalent to
- * <code>getExpression() == null</code>.
- * </p>
- *
- * @return <code>true</code> if this is the default switch case, and
- * <code>false</code> if this is a non-default switch case
- */
- public boolean isDefault() {
- return getExpression() == null;
- }
-
- /* (omit javadoc for this method)
- * Method declared on ASTNode.
- */
- int memSize() {
- return super.memSize() + 2 * 4;
- }
-
- /* (omit javadoc for this method)
- * Method declared on ASTNode.
- */
- int treeSize() {
- return
- memSize()
- + (this.optionalExpression == null ? 0 : optionalExpression.treeSize());
- }
-}
git://git.phpeclipse.com / phpeclipse.git / blobdiff