| /******************************************************************************* |
| * Copyright (c) 2000, 2013 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 org.eclipse.jdt.core.dom; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * Array creation expression AST node type. |
| * <pre> |
| * ArrayCreation: |
| * <b>new</b> PrimitiveType <b>[</b> Expression <b>]</b> { <b>[</b> Expression <b>]</b> } { <b>[</b> <b>]</b> } |
| * <b>new</b> TypeName [ <b><</b> Type { <b>,</b> Type } <b>></b> ] |
| * <b>[</b> Expression <b>]</b> { <b>[</b> Expression <b>]</b> } { <b>[</b> <b>]</b> } |
| * <b>new</b> PrimitiveType <b>[</b> <b>]</b> { <b>[</b> <b>]</b> } ArrayInitializer |
| * <b>new</b> TypeName [ <b><</b> Type { <b>,</b> Type } <b>></b> ] |
| * <b>[</b> <b>]</b> { <b>[</b> <b>]</b> } ArrayInitializer |
| * </pre> |
| * <p> |
| * The mapping from Java language syntax to AST nodes is as follows: |
| * <ul> |
| * <li>the type node is the array type of the creation expression, |
| * with one level of array per set of square brackets,</li> |
| * <li>the dimension expressions are collected into the <code>dimensions</code> |
| * list.</li> |
| * </ul> |
| * </p> |
| * |
| * @since 2.0 |
| * @noinstantiate This class is not intended to be instantiated by clients. |
| */ |
| @SuppressWarnings({"rawtypes", "unchecked"}) |
| public class ArrayCreation extends Expression { |
| |
| /** |
| * The "type" structural property of this node type (child type: {@link ArrayType}). |
| * @since 3.0 |
| */ |
| public static final ChildPropertyDescriptor TYPE_PROPERTY = |
| new ChildPropertyDescriptor(ArrayCreation.class, "type", ArrayType.class, MANDATORY, NO_CYCLE_RISK); //$NON-NLS-1$ |
| |
| /** |
| * The "dimensions" structural property of this node type (element type: {@link Expression}). |
| * @since 3.0 |
| */ |
| public static final ChildListPropertyDescriptor DIMENSIONS_PROPERTY = |
| new ChildListPropertyDescriptor(ArrayCreation.class, "dimensions", Expression.class, CYCLE_RISK); //$NON-NLS-1$ |
| |
| /** |
| * The "initializer" structural property of this node type (child type: {@link ArrayInitializer}). |
| * @since 3.0 |
| */ |
| public static final ChildPropertyDescriptor INITIALIZER_PROPERTY = |
| new ChildPropertyDescriptor(ArrayCreation.class, "initializer", ArrayInitializer.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 properyList = new ArrayList(4); |
| createPropertyList(ArrayCreation.class, properyList); |
| addProperty(TYPE_PROPERTY, properyList); |
| addProperty(DIMENSIONS_PROPERTY, properyList); |
| addProperty(INITIALIZER_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 array type; lazily initialized; defaults to a unspecified, |
| * legal array type. |
| */ |
| private ArrayType arrayType = null; |
| |
| /** |
| * The list of dimension expressions (element type: |
| * {@link Expression}). Defaults to an empty list. |
| */ |
| private ASTNode.NodeList dimensions = |
| new ASTNode.NodeList(DIMENSIONS_PROPERTY); |
| |
| /** |
| * The optional array initializer, or <code>null</code> if none; |
| * defaults to none. |
| */ |
| private ArrayInitializer optionalInitializer = null; |
| |
| /** |
| * Creates a new AST node for an array creation expression owned by the |
| * given AST. By default, the array type is an unspecified 1-dimensional |
| * array, the list of dimensions is empty, and there is no array |
| * initializer. |
| * |
| * @param ast the AST that is to own this node |
| */ |
| ArrayCreation(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 == INITIALIZER_PROPERTY) { |
| if (get) { |
| return getInitializer(); |
| } else { |
| setInitializer((ArrayInitializer) child); |
| return null; |
| } |
| } |
| if (property == TYPE_PROPERTY) { |
| if (get) { |
| return getType(); |
| } else { |
| setType((ArrayType) 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 List internalGetChildListProperty(ChildListPropertyDescriptor property) { |
| if (property == DIMENSIONS_PROPERTY) { |
| return dimensions(); |
| } |
| // allow default implementation to flag the error |
| return super.internalGetChildListProperty(property); |
| } |
| |
| /* (omit javadoc for this method) |
| * Method declared on ASTNode. |
| */ |
| final int getNodeType0() { |
| return ARRAY_CREATION; |
| } |
| |
| /* (omit javadoc for this method) |
| * Method declared on ASTNode. |
| */ |
| ASTNode clone0(AST target) { |
| ArrayCreation result = new ArrayCreation(target); |
| result.setSourceRange(getStartPosition(), getLength()); |
| result.setType((ArrayType) getType().clone(target)); |
| result.dimensions().addAll(ASTNode.copySubtrees(target, dimensions())); |
| result.setInitializer( |
| (ArrayInitializer) ASTNode.copySubtree(target, getInitializer())); |
| 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, getType()); |
| acceptChildren(visitor, this.dimensions); |
| acceptChild(visitor, getInitializer()); |
| } |
| visitor.endVisit(this); |
| } |
| |
| /** |
| * Returns the array type in this array creation expression. |
| * |
| * @return the array type |
| */ |
| public ArrayType getType() { |
| if (this.arrayType == null) { |
| // lazy init must be thread-safe for readers |
| synchronized (this) { |
| if (this.arrayType == null) { |
| preLazyInit(); |
| this.arrayType = this.ast.newArrayType( |
| this.ast.newPrimitiveType(PrimitiveType.INT)); |
| postLazyInit(this.arrayType, TYPE_PROPERTY); |
| } |
| } |
| } |
| return this.arrayType; |
| } |
| |
| /** |
| * Sets the array type in this array creation expression. |
| * |
| * @param type the new array 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(ArrayType type) { |
| if (type == null) { |
| throw new IllegalArgumentException(); |
| } |
| // an ArrayCreation cannot occur inside a ArrayType - cycles not possible |
| ASTNode oldChild = this.arrayType; |
| preReplaceChild(oldChild, type, TYPE_PROPERTY); |
| this.arrayType = type; |
| postReplaceChild(oldChild, type, TYPE_PROPERTY); |
| } |
| |
| /** |
| * Returns the live ordered list of dimension expressions in this array |
| * initializer. |
| * |
| * @return the live list of dimension expressions |
| * (element type: {@link Expression}) |
| */ |
| public List dimensions() { |
| return this.dimensions; |
| } |
| |
| /** |
| * Returns the array initializer of this array creation expression, or |
| * <code>null</code> if there is none. |
| * |
| * @return the array initializer node, or <code>null</code> if |
| * there is none |
| */ |
| public ArrayInitializer getInitializer() { |
| return this.optionalInitializer; |
| } |
| |
| /** |
| * Sets or clears the array initializer of this array creation expression. |
| * |
| * @param initializer the array initializer node, or <code>null</code> |
| * if there is none |
| * @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 setInitializer(ArrayInitializer initializer) { |
| // an ArrayCreation may occur inside an ArrayInitializer |
| // must check cycles |
| ASTNode oldChild = this.optionalInitializer; |
| preReplaceChild(oldChild, initializer, INITIALIZER_PROPERTY); |
| this.optionalInitializer = initializer; |
| postReplaceChild(oldChild, initializer, INITIALIZER_PROPERTY); |
| } |
| |
| /* (omit javadoc for this method) |
| * Method declared on ASTNode. |
| */ |
| int memSize() { |
| return BASE_NODE_SIZE + 3 * 4; |
| } |
| |
| /* (omit javadoc for this method) |
| * Method declared on ASTNode. |
| */ |
| int treeSize() { |
| int size = memSize() |
| + (this.arrayType == null ? 0 : getType().treeSize()) |
| + (this.optionalInitializer == null ? 0 : getInitializer().treeSize()) |
| + this.dimensions.listSize(); |
| return size; |
| } |
| } |
| |