| /******************************************************************************* |
| * Copyright (c) 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; |
| |
| /** |
| * Type node for a parameterized type (added in 3.0 API). |
| * <pre> |
| * ParameterizedType: |
| * Name <b><</b> Type { <b>,</b> Type } <b>></b> |
| * </pre> |
| * <p> |
| * Note: Support for generic types is an experimental language feature |
| * under discussion in JSR-014 and under consideration for inclusion |
| * in the 1.5 release of J2SE. The support here is therefore tentative |
| * and subject to change. |
| * </p> |
| * |
| * @since 3.0 |
| */ |
| public class ParameterizedType extends Type { |
| |
| /** |
| * The "name" structural property of this node type. |
| * @since 3.0 |
| */ |
| public static final ChildPropertyDescriptor NAME_PROPERTY = |
| new ChildPropertyDescriptor(ParameterizedType.class, "name", Name.class, MANDATORY, NO_CYCLE_RISK); //$NON-NLS-1$ |
| |
| /** |
| * The "typeArguments" structural property of this node type. |
| * @since 3.0 |
| */ |
| public static final ChildListPropertyDescriptor TYPE_ARGUMENTS_PROPERTY = |
| new ChildListPropertyDescriptor(ParameterizedType.class, "typeArguments", Type.class, 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 { |
| createPropertyList(ParameterizedType.class); |
| addProperty(NAME_PROPERTY); |
| addProperty(TYPE_ARGUMENTS_PROPERTY); |
| PROPERTY_DESCRIPTORS = reapPropertyList(); |
| } |
| |
| /** |
| * 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.LEVEL_*</code>LEVEL |
| |
| * @return a list of property descriptors (element type: |
| * {@link StructuralPropertyDescriptor}) |
| * @since 3.0 |
| */ |
| public static List propertyDescriptors(int apiLevel) { |
| return PROPERTY_DESCRIPTORS; |
| } |
| |
| /** |
| * The type name node; lazily initialized; defaults to a type with |
| * an unspecfied, but legal, name. |
| */ |
| private Name typeName = null; |
| |
| /** |
| * The type arguments (element type: <code>Type</code>). |
| * Defaults to an empty list. |
| */ |
| private ASTNode.NodeList typeArguments = |
| new ASTNode.NodeList(TYPE_ARGUMENTS_PROPERTY); |
| |
| /** |
| * Creates a new unparented node for a parameterized type owned by the |
| * given AST. By default, an unspecified, but legal, name, and no type |
| * arguments. |
| * <p> |
| * N.B. This constructor is package-private. |
| * </p> |
| * |
| * @param ast the AST that is to own this node |
| */ |
| ParameterizedType(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 == NAME_PROPERTY) { |
| if (get) { |
| return getName(); |
| } else { |
| setName((Name) 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 == TYPE_ARGUMENTS_PROPERTY) { |
| return typeArguments(); |
| } |
| // allow default implementation to flag the error |
| return super.internalGetChildListProperty(property); |
| } |
| |
| /* (omit javadoc for this method) |
| * Method declared on ASTNode. |
| */ |
| public int getNodeType() { |
| return PARAMETERIZED_TYPE; |
| } |
| |
| /* (omit javadoc for this method) |
| * Method declared on ASTNode. |
| */ |
| ASTNode clone(AST target) { |
| ParameterizedType result = new ParameterizedType(target); |
| result.setSourceRange(this.getStartPosition(), this.getLength()); |
| result.setName((Name) ((ASTNode) getName()).clone(target)); |
| result.typeArguments().addAll( |
| ASTNode.copySubtrees(target, typeArguments())); |
| 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, getName()); |
| acceptChildren(visitor, this.typeArguments); |
| } |
| visitor.endVisit(this); |
| } |
| |
| /** |
| * Returns the name of this parameterized type. |
| * |
| * @return the name of this parameterized type |
| */ |
| public Name getName() { |
| if (this.typeName == null) { |
| preLazyInit(); |
| this.typeName = new SimpleName(this.ast); |
| postLazyInit(this.typeName, NAME_PROPERTY); |
| } |
| return this.typeName; |
| } |
| |
| /** |
| * Sets the name of this parameterized type to the given name. |
| * |
| * @param typeName the new name of this parameterized 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 setName(Name typeName) { |
| if (typeName == null) { |
| throw new IllegalArgumentException(); |
| } |
| preReplaceChild(this.typeName, typeName, NAME_PROPERTY); |
| this.typeName = typeName; |
| postReplaceChild(this.typeName, typeName, NAME_PROPERTY); |
| } |
| |
| /** |
| * Returns the live ordered list of type arguments of this parameterized |
| * type. For the parameterized type to be plausible, the list should contain |
| * at least one element and not contain primitive types. |
| * |
| * @return the live list of type arguments |
| * (element type: <code>Type</code>) |
| */ |
| public List typeArguments() { |
| return this.typeArguments; |
| } |
| |
| /* (omit javadoc for this method) |
| * Method declared on ASTNode. |
| */ |
| int memSize() { |
| // treat Code as free |
| return BASE_NODE_SIZE + 2 * 4; |
| } |
| |
| /* (omit javadoc for this method) |
| * Method declared on ASTNode. |
| */ |
| int treeSize() { |
| return |
| memSize() |
| + (this.typeName == null ? 0 : getName().treeSize()) |
| + this.typeArguments.listSize(); |
| } |
| } |
| |