| /******************************************************************************* |
| * Copyright (c) 2003, 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 org.eclipse.jdt.core.dom; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * Type node for a qualified type (added in JLS3 API). |
| * <pre> |
| * QualifiedType: |
| * Type <b>.</b> SimpleName |
| * </pre> |
| * <p> |
| * Not all node arragements will represent legal Java constructs. In particular, |
| * it is nonsense if the type is an array type or primitive type. The normal use |
| * is when the type is a simple or parameterized type. |
| * </p> |
| * <p> |
| * A type like "A.B" can be represented either of two ways: |
| * <ol> |
| * <li> |
| * <code>QualifiedType(SimpleType(SimpleName("A")),SimpleName("B"))</code> |
| * </li> |
| * <li> |
| * <code>SimpleType(QualifiedName(SimpleName("A"),SimpleName("B")))</code> |
| * </li> |
| * </ol> |
| * The first form is preferred when "A" is known to be a type. However, a |
| * parser cannot always determine this. Clients should be prepared to handle |
| * either rather than make assumptions. (Note also that the first form |
| * became possible as of JLS3; only the second form existed in JLS2 API.) |
| * </p> |
| * |
| * @since 3.1 |
| * @noinstantiate This class is not intended to be instantiated by clients. |
| */ |
| public class QualifiedType extends Type { |
| /** |
| * This index represents the position inside a parameterized qualified type. |
| */ |
| int index; |
| |
| /** |
| * The "qualifier" structural property of this node type. |
| */ |
| public static final ChildPropertyDescriptor QUALIFIER_PROPERTY = |
| new ChildPropertyDescriptor(QualifiedType.class, "qualifier", Type.class, MANDATORY, CYCLE_RISK); //$NON-NLS-1$ |
| |
| /** |
| * The "name" structural property of this node type. |
| */ |
| public static final ChildPropertyDescriptor NAME_PROPERTY = |
| new ChildPropertyDescriptor(QualifiedType.class, "name", SimpleName.class, MANDATORY, NO_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 propertyList = new ArrayList(3); |
| createPropertyList(QualifiedType.class, propertyList); |
| addProperty(QUALIFIER_PROPERTY, propertyList); |
| addProperty(NAME_PROPERTY, propertyList); |
| PROPERTY_DESCRIPTORS = reapPropertyList(propertyList); |
| } |
| |
| /** |
| * 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}) |
| */ |
| public static List propertyDescriptors(int apiLevel) { |
| return PROPERTY_DESCRIPTORS; |
| } |
| |
| /** |
| * The type node; lazily initialized; defaults to a type with |
| * an unspecfied, but legal, simple name. |
| */ |
| private Type qualifier = null; |
| |
| /** |
| * The name being qualified; lazily initialized; defaults to a unspecified, |
| * legal Java identifier. |
| */ |
| private SimpleName name = null; |
| |
| /** |
| * Creates a new unparented node for a qualified type owned by the |
| * given AST. By default, an unspecified, but legal, qualifier and name. |
| * <p> |
| * N.B. This constructor is package-private. |
| * </p> |
| * |
| * @param ast the AST that is to own this node |
| */ |
| QualifiedType(AST ast) { |
| super(ast); |
| unsupportedIn2(); |
| } |
| |
| /* (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 == QUALIFIER_PROPERTY) { |
| if (get) { |
| return getQualifier(); |
| } else { |
| setQualifier((Type) child); |
| return null; |
| } |
| } |
| if (property == NAME_PROPERTY) { |
| if (get) { |
| return getName(); |
| } else { |
| setName((SimpleName) 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 QUALIFIED_TYPE; |
| } |
| |
| /* (omit javadoc for this method) |
| * Method declared on ASTNode. |
| */ |
| ASTNode clone0(AST target) { |
| QualifiedType result = new QualifiedType(target); |
| result.setSourceRange(getStartPosition(), getLength()); |
| result.setQualifier((Type) ((ASTNode) getQualifier()).clone(target)); |
| result.setName((SimpleName) ((ASTNode) getName()).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, getQualifier()); |
| acceptChild(visitor, getName()); |
| } |
| visitor.endVisit(this); |
| } |
| |
| /** |
| * Returns the qualifier of this qualified type. |
| * |
| * @return the qualifier of this qualified type |
| */ |
| public Type getQualifier() { |
| if (this.qualifier == null) { |
| // lazy init must be thread-safe for readers |
| synchronized (this) { |
| if (this.qualifier == null) { |
| preLazyInit(); |
| this.qualifier = new SimpleType(this.ast); |
| postLazyInit(this.qualifier, QUALIFIER_PROPERTY); |
| } |
| } |
| } |
| return this.qualifier; |
| } |
| |
| /** |
| * Sets the qualifier of this qualified type to the given type. |
| * |
| * @param type the new qualifier of this qualified 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 setQualifier(Type type) { |
| if (type == null) { |
| throw new IllegalArgumentException(); |
| } |
| ASTNode oldChild = this.qualifier; |
| preReplaceChild(oldChild, type, QUALIFIER_PROPERTY); |
| this.qualifier = type; |
| postReplaceChild(oldChild, type, QUALIFIER_PROPERTY); |
| } |
| |
| /** |
| * Returns the name part of this qualified type. |
| * |
| * @return the name being qualified |
| */ |
| public SimpleName getName() { |
| if (this.name == null) { |
| // lazy init must be thread-safe for readers |
| synchronized (this) { |
| if (this.name == null) { |
| preLazyInit(); |
| this.name = new SimpleName(this.ast); |
| postLazyInit(this.name, NAME_PROPERTY); |
| } |
| } |
| } |
| return this.name; |
| } |
| |
| /** |
| * Sets the name part of this qualified type to the given simple name. |
| * |
| * @param name the identifier of this qualified name |
| * @exception IllegalArgumentException if: |
| * <ul> |
| * <li>the node belongs to a different AST</li> |
| * <li>the node already has a parent</li> |
| * </ul> |
| */ |
| public void setName(SimpleName name) { |
| if (name == null) { |
| throw new IllegalArgumentException(); |
| } |
| ASTNode oldChild = this.name; |
| preReplaceChild(oldChild, name, NAME_PROPERTY); |
| this.name = name; |
| postReplaceChild(oldChild, name, NAME_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.qualifier == null ? 0 : getQualifier().treeSize()) |
| + (this.name == null ? 0 : getName().treeSize()); |
| } |
| } |
| |