/******************************************************************************* * 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 net.sourceforge.phpdt.core.dom; import java.util.ArrayList; import java.util.List; /** * Type node for a parameterized type (added in JLS3 API). * These nodes are used for type references (as opposed to * declarations of parameterized types.) *
* ParameterizedType: * Type < Type { , Type } > ** The first type may be a simple type or a qualified type; * other kinds of types are meaningless. * * @since 3.1 * @noinstantiate This class is not intended to be instantiated by clients. */ public class ParameterizedType extends Type { /** * This index represents the position inside a parameterized qualified type. */ int index; /** * The "type" structural property of this node type. */ public static final ChildPropertyDescriptor TYPE_PROPERTY = new ChildPropertyDescriptor(ParameterizedType.class, "type", Type.class, MANDATORY, CYCLE_RISK); //$NON-NLS-1$ /** * The "typeArguments" structural property of this node type. */ 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 { List propertyList = new ArrayList(3); createPropertyList(ParameterizedType.class, propertyList); addProperty(TYPE_PROPERTY, propertyList); addProperty(TYPE_ARGUMENTS_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 *
AST.JLS*
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 an unspecfied, but legal,
* type.
*/
private Type type = null;
/**
* The type arguments (element type: Type
).
* 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, type, and no type
* arguments.
* * N.B. This constructor is package-private. *
* * @param ast the AST that is to own this node */ ParameterizedType(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 == TYPE_PROPERTY) { if (get) { return getType(); } else { setType((Type) 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. */ final int getNodeType0() { return PARAMETERIZED_TYPE; } /* (omit javadoc for this method) * Method declared on ASTNode. */ ASTNode clone0(AST target) { ParameterizedType result = new ParameterizedType(target); result.setSourceRange(this.getStartPosition(), this.getLength()); result.setType((Type) ((ASTNode) getType()).clone(target)); result.typeArguments().addAll( ASTNode.copySubtrees(target, typeArguments())); 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.typeArguments); } visitor.endVisit(this); } /** * Returns the type of this parameterized type. * * @return the type of this parameterized type */ public Type getType() { if (this.type == null) { // lazy init must be thread-safe for readers synchronized (this) { if (this.type == null) { preLazyInit(); this.type = new SimpleType(this.ast); postLazyInit(this.type, TYPE_PROPERTY); } } } return this.type; } /** * Sets the type of this parameterized type. * * @param type the new type of this parameterized type * @exception IllegalArgumentException if: *Type
)
*/
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 + 3 * 4;
}
/* (omit javadoc for this method)
* Method declared on ASTNode.
*/
int treeSize() {
return
memSize()
+ (this.type == null ? 0 : getType().treeSize())
+ this.typeArguments.listSize();
}
}