| /******************************************************************************* |
| * Copyright (c) 2000, 2003 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.jdt.core.dom; |
| |
| /** |
| * Synchronized statement AST node type. |
| * |
| * <pre> |
| * SynchronizedStatement: |
| * <b>synchronized</b> <b>(</b> Expression <b>)</b> Block |
| * </pre> |
| * |
| * @since 2.0 |
| */ |
| public class SynchronizedStatement extends Statement { |
| |
| /** |
| * The expression; lazily initialized; defaults to an unspecified, but |
| * legal, expression. |
| */ |
| private Expression expression = null; |
| |
| /** |
| * The body; lazily initialized; defaults to an empty block. |
| */ |
| private Block body = null; |
| |
| /** |
| * Creates a new unparented synchronized statement node owned by the given |
| * AST. By default, the expression is unspecified, but legal, and the |
| * blody is an empty block. |
| * <p> |
| * N.B. This constructor is package-private. |
| * </p> |
| * |
| * @param ast the AST that is to own this node |
| */ |
| SynchronizedStatement(AST ast) { |
| super(ast); |
| } |
| |
| /* (omit javadoc for this method) |
| * Method declared on ASTNode. |
| */ |
| public int getNodeType() { |
| return SYNCHRONIZED_STATEMENT; |
| } |
| |
| /* (omit javadoc for this method) |
| * Method declared on ASTNode. |
| */ |
| ASTNode clone(AST target) { |
| SynchronizedStatement result = new SynchronizedStatement(target); |
| result.setSourceRange(this.getStartPosition(), this.getLength()); |
| result.copyLeadingComment(this); |
| result.setExpression((Expression) getExpression().clone(target)); |
| result.setBody((Block) getBody().clone(target)); |
| return result; |
| } |
| |
| /* (omit javadoc for this method) |
| * Method declared on ASTNode. |
| */ |
| public boolean subtreeMatch(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, getBody()); |
| } |
| visitor.endVisit(this); |
| } |
| |
| /** |
| * Returns the expression of this synchronized statement. |
| * |
| * @return the expression node |
| */ |
| public Expression getExpression() { |
| if (expression == null) { |
| // lazy initialize - use setter to ensure parent link set too |
| long count = getAST().modificationCount(); |
| setExpression(new SimpleName(getAST())); |
| getAST().setModificationCount(count); |
| } |
| return expression; |
| } |
| |
| /** |
| * Sets the expression of this synchronized statement. |
| * |
| * @param expression the 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 setExpression(Expression expression) { |
| if (expression == null) { |
| throw new IllegalArgumentException(); |
| } |
| // a SynchronizedStatement may occur inside an Expression |
| // must check cycles |
| replaceChild(this.expression, expression, true); |
| this.expression = expression; |
| } |
| |
| /** |
| * Returns the body of this synchronized statement. |
| * |
| * @return the body block node |
| */ |
| public Block getBody() { |
| if (body == null) { |
| // lazy initialize - use setter to ensure parent link set too |
| long count = getAST().modificationCount(); |
| setBody(new Block(getAST())); |
| getAST().setModificationCount(count); |
| } |
| return body; |
| } |
| |
| /** |
| * Sets the body of this synchronized statement. |
| * |
| * @param block the body statement 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 setBody(Block block) { |
| if (block == null) { |
| throw new IllegalArgumentException(); |
| } |
| // a WhileStatement may occur inside a Statement - must check cycles |
| replaceChild(this.body, block, true); |
| this.body = block; |
| } |
| |
| /* (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() |
| + (expression == null ? 0 : getExpression().treeSize()) |
| + (body == null ? 0 : getBody().treeSize()); |
| } |
| } |