--- /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;
+
+/**
+ * Instanceof expression AST node type.
+ * <pre>
+ * InstanceofExpression:
+ * Expression <b>instanceof</b> Type
+ * </pre>
+ *
+ * @since 2.0
+ * @noinstantiate This class is not intended to be instantiated by clients.
+ */
+public class InstanceofExpression extends Expression {
+
+ /**
+ * The "leftOperand" structural property of this node type.
+ * @since 3.0
+ */
+ public static final ChildPropertyDescriptor LEFT_OPERAND_PROPERTY =
+ new ChildPropertyDescriptor(InstanceofExpression.class, "leftOperand", Expression.class, MANDATORY, CYCLE_RISK); //$NON-NLS-1$
+
+ /**
+ * The "rightOperand" structural property of this node type.
+ * @since 3.0
+ */
+ public static final ChildPropertyDescriptor RIGHT_OPERAND_PROPERTY =
+ new ChildPropertyDescriptor(InstanceofExpression.class, "rightOperand", Type.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(3);
+ createPropertyList(InstanceofExpression.class, properyList);
+ addProperty(LEFT_OPERAND_PROPERTY, properyList);
+ addProperty(RIGHT_OPERAND_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 left operand; lazily initialized; defaults to an unspecified,
+ * but legal, simple name.
+ */
+ private Expression leftOperand = null;
+
+ /**
+ * The right operand; lazily initialized; defaults to an unspecified,
+ * but legal, simple type.
+ */
+ private Type rightOperand = null;
+
+ /**
+ * Creates a new AST node for an instanceof expression owned by the given
+ * AST. By default, the node has unspecified (but legal) operator,
+ * left and right operands.
+ *
+ * @param ast the AST that is to own this node
+ */
+ InstanceofExpression(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 == LEFT_OPERAND_PROPERTY) {
+ if (get) {
+ return getLeftOperand();
+ } else {
+ setLeftOperand((Expression) child);
+ return null;
+ }
+ }
+ if (property == RIGHT_OPERAND_PROPERTY) {
+ if (get) {
+ return getRightOperand();
+ } else {
+ setRightOperand((Type) 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 INSTANCEOF_EXPRESSION;
+ }
+
+ /* (omit javadoc for this method)
+ * Method declared on ASTNode.
+ */
+ ASTNode clone0(AST target) {
+ InstanceofExpression result = new InstanceofExpression(target);
+ result.setSourceRange(this.getStartPosition(), this.getLength());
+ result.setLeftOperand((Expression) getLeftOperand().clone(target));
+ result.setRightOperand((Type) getRightOperand().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, getLeftOperand());
+ acceptChild(visitor, getRightOperand());
+ }
+ visitor.endVisit(this);
+ }
+
+ /**
+ * Returns the left operand of this instanceof expression.
+ *
+ * @return the left operand node
+ */
+ public Expression getLeftOperand() {
+ if (this.leftOperand == null) {
+ // lazy init must be thread-safe for readers
+ synchronized (this) {
+ if (this.leftOperand == null) {
+ preLazyInit();
+ this.leftOperand= new SimpleName(this.ast);
+ postLazyInit(this.leftOperand, LEFT_OPERAND_PROPERTY);
+ }
+ }
+ }
+ return this.leftOperand;
+ }
+
+ /**
+ * Sets the left operand of this instanceof expression.
+ *
+ * @param expression the left operand 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 setLeftOperand(Expression expression) {
+ if (expression == null) {
+ throw new IllegalArgumentException();
+ }
+ ASTNode oldChild = this.leftOperand;
+ preReplaceChild(oldChild, expression, LEFT_OPERAND_PROPERTY);
+ this.leftOperand = expression;
+ postReplaceChild(oldChild, expression, LEFT_OPERAND_PROPERTY);
+ }
+
+ /**
+ * Returns the right operand of this instanceof expression.
+ *
+ * @return the right operand node
+ */
+ public Type getRightOperand() {
+ if (this.rightOperand == null) {
+ // lazy init must be thread-safe for readers
+ synchronized (this) {
+ if (this.rightOperand == null) {
+ preLazyInit();
+ this.rightOperand= new SimpleType(this.ast);
+ postLazyInit(this.rightOperand, RIGHT_OPERAND_PROPERTY);
+ }
+ }
+ }
+ return this.rightOperand;
+ }
+
+ /**
+ * Sets the right operand of this instanceof expression.
+ *
+ * @param referenceType the right operand 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 setRightOperand(Type referenceType) {
+ if (referenceType == null) {
+ throw new IllegalArgumentException();
+ }
+ ASTNode oldChild = this.rightOperand;
+ preReplaceChild(oldChild, referenceType, RIGHT_OPERAND_PROPERTY);
+ this.rightOperand = referenceType;
+ postReplaceChild(oldChild, referenceType, RIGHT_OPERAND_PROPERTY);
+ }
+
+ /* (omit javadoc for this method)
+ * Method declared on ASTNode.
+ */
+ int memSize() {
+ // treat Operator as free
+ return BASE_NODE_SIZE + 2 * 4;
+ }
+
+ /* (omit javadoc for this method)
+ * Method declared on ASTNode.
+ */
+ int treeSize() {
+ return
+ memSize()
+ + (this.leftOperand == null ? 0 : getLeftOperand().treeSize())
+ + (this.rightOperand == null ? 0 : getRightOperand().treeSize());
+ }
+}
git://git.phpeclipse.com / phpeclipse.git / blobdiff