| /******************************************************************************* |
| * 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; |
| |
| import java.util.List; |
| |
| /** |
| * Local variable declaration statement AST node type. |
| * <p> |
| * This kind of node collects several variable declaration fragments |
| * (<code>VariableDeclarationFragment</code>) into a statement |
| * (<code>Statement</code>), all sharing the same modifiers and base type. |
| * </p> |
| * <pre> |
| * VariableDeclarationStatement: |
| * { Modifier } Type VariableDeclarationFragment |
| * { <b>,</b> VariableDeclarationFragment } <b>;</b> |
| * </pre> |
| * |
| * @since 2.0 |
| */ |
| public class VariableDeclarationStatement extends Statement { |
| |
| /** |
| * Mask containing all legal modifiers for this construct. |
| */ |
| private static final int LEGAL_MODIFIERS = Modifier.FINAL; |
| |
| /** |
| * The modifiers; bit-wise or of Modifier flags. |
| * Defaults to none. |
| */ |
| private int modifiers = Modifier.NONE; |
| |
| /** |
| * The base type; lazily initialized; defaults to an unspecified, |
| * legal type. |
| */ |
| private Type baseType = null; |
| |
| /** |
| * The list of variable variable declaration fragments (element type: |
| * <code VariableDeclarationFragment</code>). Defaults to an empty list. |
| */ |
| private ASTNode.NodeList variableDeclarationFragments = |
| new ASTNode.NodeList(true, VariableDeclarationFragment.class); |
| |
| /** |
| * Creates a new unparented local variable declaration statement node owned |
| * by the given AST. By default, the variable declaration has: no modifiers, |
| * an unspecified (but legal) type, and an empty list of variable |
| * declaration fragments (which is syntactically illegal). |
| * <p> |
| * N.B. This constructor is package-private. |
| * </p> |
| * |
| * @param ast the AST that is to own this node |
| */ |
| VariableDeclarationStatement(AST ast) { |
| super(ast); |
| } |
| |
| /* (omit javadoc for this method) |
| * Method declared on ASTNode. |
| */ |
| public int getNodeType() { |
| return VARIABLE_DECLARATION_STATEMENT; |
| } |
| |
| /* (omit javadoc for this method) |
| * Method declared on ASTNode. |
| */ |
| ASTNode clone(AST target) { |
| VariableDeclarationStatement result = |
| new VariableDeclarationStatement(target); |
| result.setSourceRange(this.getStartPosition(), this.getLength()); |
| result.copyLeadingComment(this); |
| result.setModifiers(getModifiers()); |
| result.setType((Type) getType().clone(target)); |
| result.fragments().addAll( |
| ASTNode.copySubtrees(target, fragments())); |
| 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, getType()); |
| acceptChildren(visitor, variableDeclarationFragments); |
| } |
| visitor.endVisit(this); |
| } |
| |
| /** |
| * Returns the modifiers explicitly specified on this declaration. |
| * <p> |
| * Note that the final modifier is the only meaningful modifier for local |
| * variable declarations. |
| * </p> |
| * |
| * @return the bit-wise or of <code>Modifier</code> constants |
| * @see Modifier |
| */ |
| public int getModifiers() { |
| return modifiers; |
| } |
| |
| /** |
| * Sets the modifiers explicitly specified on this declaration. |
| * <p> |
| * Note that the final modifier is the only meaningful modifier for local |
| * variable declarations. |
| * </p> |
| * |
| * @return the bit-wise or of <code>Modifier</code> constants |
| * @see Modifier |
| * @exception IllegalArgumentException if the modifiers are illegal |
| */ |
| public void setModifiers(int modifiers) { |
| if ((modifiers & ~LEGAL_MODIFIERS) != 0) { |
| throw new IllegalArgumentException(); |
| } |
| modifying(); |
| this.modifiers = modifiers; |
| } |
| |
| /** |
| * Returns the base type declared in this variable declaration statement. |
| * <p> |
| * N.B. The individual child variable declaration fragments may specify |
| * additional array dimensions. So the type of the variable are not |
| * necessarily exactly this type. |
| * </p> |
| * |
| * @return the base type |
| */ |
| public Type getType() { |
| if (baseType == null) { |
| // lazy initialize - use setter to ensure parent link set too |
| long count = getAST().modificationCount(); |
| setType(getAST().newPrimitiveType(PrimitiveType.INT)); |
| getAST().setModificationCount(count); |
| } |
| return baseType; |
| } |
| |
| /** |
| * Sets the base type declared in this variable declaration statement to |
| * the given type. |
| * |
| * @param type the new base type |
| * @exception IllegalArgumentException if: |
| * <ul> |
| * <li>the node belongs to a different AST</li> |
| * <li>the node already has a parent</li> |
| * </ul> |
| */ |
| public void setType(Type type) { |
| if (type == null) { |
| throw new IllegalArgumentException(); |
| } |
| replaceChild(this.baseType, type, false); |
| this.baseType = type; |
| } |
| |
| /** |
| * Returns the live list of variable declaration fragments in this statement. |
| * Adding and removing nodes from this list affects this node dynamically. |
| * All nodes in this list must be <code>VariableDeclarationFragment</code>s; |
| * attempts to add any other type of node will trigger an |
| * exception. |
| * |
| * @return the live list of variable declaration fragments in this |
| * statement (element type: <code>VariableDeclarationFragment</code>) |
| */ |
| public List fragments() { |
| return variableDeclarationFragments; |
| } |
| |
| /* (omit javadoc for this method) |
| * Method declared on ASTNode. |
| */ |
| int memSize() { |
| return super.memSize() + 3 * 4; |
| } |
| |
| /* (omit javadoc for this method) |
| * Method declared on ASTNode. |
| */ |
| int treeSize() { |
| return |
| memSize() |
| + (baseType == null ? 0 : getType().treeSize()) |
| + variableDeclarationFragments.listSize(); |
| } |
| } |
| |