+++ /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;
-
-/**
- * Conditional expression AST node type.
- *
- * <pre>
- * ConditionalExpression:
- * Expression <b>?</b> Expression <b>:</b> Expression
- * </pre>
- *
- * @since 2.0
- * @noinstantiate This class is not intended to be instantiated by clients.
- */
-public class ConditionalExpression extends Expression {
-
- /**
- * The "expression" structural property of this node type.
- * @since 3.0
- */
- public static final ChildPropertyDescriptor EXPRESSION_PROPERTY =
- new ChildPropertyDescriptor(ConditionalExpression.class, "expression", Expression.class, MANDATORY, CYCLE_RISK); //$NON-NLS-1$
-
- /**
- * The "thenExpression" structural property of this node type.
- * @since 3.0
- */
- public static final ChildPropertyDescriptor THEN_EXPRESSION_PROPERTY =
- new ChildPropertyDescriptor(ConditionalExpression.class, "thenExpression", Expression.class, MANDATORY, CYCLE_RISK); //$NON-NLS-1$
-
- /**
- * The "elseExpression" structural property of this node type.
- * @since 3.0
- */
- public static final ChildPropertyDescriptor ELSE_EXPRESSION_PROPERTY =
- new ChildPropertyDescriptor(ConditionalExpression.class, "elseExpression", Expression.class, MANDATORY, 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 properyList = new ArrayList(4);
- createPropertyList(ConditionalExpression.class, properyList);
- addProperty(EXPRESSION_PROPERTY, properyList);
- addProperty(THEN_EXPRESSION_PROPERTY, properyList);
- addProperty(ELSE_EXPRESSION_PROPERTY, properyList);
- PROPERTY_DESCRIPTORS = reapPropertyList(properyList);
- }
-
- /**
- * 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 condition expression; lazily initialized; defaults to an unspecified,
- * but legal, expression.
- */
- private Expression conditionExpression = null;
-
- /**
- * The "then" expression; lazily initialized; defaults to an unspecified,
- * but legal, expression.
- */
- private Expression thenExpression = null;
-
- /**
- * The "else" expression; lazily initialized; defaults to an unspecified,
- * but legal, expression.
- */
- private Expression elseExpression = null;
-
- /**
- * Creates a new unparented conditional expression node owned by the given
- * AST. By default, the condition, "then", and "else" expresssions are
- * unspecified, but legal.
- * <p>
- * N.B. This constructor is package-private.
- * </p>
- *
- * @param ast the AST that is to own this node
- */
- ConditionalExpression(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;
- }
- }
- if (property == THEN_EXPRESSION_PROPERTY) {
- if (get) {
- return getThenExpression();
- } else {
- setThenExpression((Expression) child);
- return null;
- }
- }
- if (property == ELSE_EXPRESSION_PROPERTY) {
- if (get) {
- return getElseExpression();
- } else {
- setElseExpression((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 CONDITIONAL_EXPRESSION;
- }
-
- /* (omit javadoc for this method)
- * Method declared on ASTNode.
- */
- ASTNode clone0(AST target) {
- ConditionalExpression result = new ConditionalExpression(target);
- result.setSourceRange(this.getStartPosition(), this.getLength());
- result.setExpression((Expression) getExpression().clone(target));
- result.setThenExpression(
- (Expression) getThenExpression().clone(target));
- result.setElseExpression(
- (Expression) getElseExpression().clone(target));
- 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) {
- // visit children in normal left to right reading order
- acceptChild(visitor, getExpression());
- acceptChild(visitor, getThenExpression());
- acceptChild(visitor, getElseExpression());
- }
- visitor.endVisit(this);
- }
-
- /**
- * Returns the condition of this conditional expression.
- *
- * @return the condition node
- */
- public Expression getExpression() {
- if (this.conditionExpression == null) {
- // lazy init must be thread-safe for readers
- synchronized (this) {
- if (this.conditionExpression == null) {
- preLazyInit();
- this.conditionExpression = new SimpleName(this.ast);
- postLazyInit(this.conditionExpression, EXPRESSION_PROPERTY);
- }
- }
- }
- return this.conditionExpression;
- }
-
- /**
- * Sets the condition of this conditional expression.
- *
- * @param expression the condition node
- * @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) {
- if (expression == null) {
- throw new IllegalArgumentException();
- }
- ASTNode oldChild = this.conditionExpression;
- preReplaceChild(oldChild, expression, EXPRESSION_PROPERTY);
- this.conditionExpression = expression;
- postReplaceChild(oldChild, expression, EXPRESSION_PROPERTY);
- }
-
- /**
- * Returns the "then" part of this conditional expression.
- *
- * @return the "then" expression node
- */
- public Expression getThenExpression() {
- if (this.thenExpression == null) {
- // lazy init must be thread-safe for readers
- synchronized (this) {
- if (this.thenExpression == null) {
- preLazyInit();
- this.thenExpression = new SimpleName(this.ast);
- postLazyInit(this.thenExpression, THEN_EXPRESSION_PROPERTY);
- }
- }
- }
- return this.thenExpression;
- }
-
- /**
- * Sets the "then" part of this conditional expression.
- *
- * @param expression the "then" expression node
- * @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 setThenExpression(Expression expression) {
- if (expression == null) {
- throw new IllegalArgumentException();
- }
- ASTNode oldChild = this.thenExpression;
- preReplaceChild(oldChild, expression, THEN_EXPRESSION_PROPERTY);
- this.thenExpression = expression;
- postReplaceChild(oldChild, expression, THEN_EXPRESSION_PROPERTY);
- }
-
- /**
- * Returns the "else" part of this conditional expression.
- *
- * @return the "else" expression node
- */
- public Expression getElseExpression() {
- if (this.elseExpression == null) {
- // lazy init must be thread-safe for readers
- synchronized (this) {
- if (this.elseExpression == null) {
- preLazyInit();
- this.elseExpression = new SimpleName(this.ast);
- postLazyInit(this.elseExpression, ELSE_EXPRESSION_PROPERTY);
- }
- }
- }
- return this.elseExpression;
- }
-
- /**
- * Sets the "else" part of this conditional expression.
- *
- * @param expression the "else" expression node
- * @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 setElseExpression(Expression expression) {
- if (expression == null) {
- throw new IllegalArgumentException();
- }
- ASTNode oldChild = this.elseExpression;
- preReplaceChild(oldChild, expression, ELSE_EXPRESSION_PROPERTY);
- this.elseExpression = expression;
- postReplaceChild(oldChild, expression, ELSE_EXPRESSION_PROPERTY);
- }
-
- /* (omit javadoc for this method)
- * Method declared on ASTNode.
- */
- int memSize() {
- // treat Code as free
- return BASE_NODE_SIZE + 3 * 4;
- }
-
- /* (omit javadoc for this method)
- * Method declared on ASTNode.
- */
- int treeSize() {
- return
- memSize()
- + (this.conditionExpression == null ? 0 : getExpression().treeSize())
- + (this.thenExpression == null ? 0 : getThenExpression().treeSize())
- + (this.elseExpression == null ? 0 : getElseExpression().treeSize());
- }
-}
git://git.phpeclipse.com / phpeclipse.git / blobdiff