| /******************************************************************************* |
| * Copyright (c) 2000, 2004 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.internal.compiler.ast; |
| |
| import org.eclipse.jdt.core.compiler.CharOperation; |
| import org.eclipse.jdt.internal.compiler.ASTVisitor; |
| import org.eclipse.jdt.internal.compiler.lookup.*; |
| |
| /** |
| * Node to represent Wildcard |
| */ |
| public class Wildcard extends SingleTypeReference { |
| |
| public static final int UNBOUND = 0; |
| public static final int EXTENDS = 1; |
| public static final int SUPER = 2; |
| |
| public TypeReference bound; |
| public int kind; |
| |
| public Wildcard(int kind) { |
| super(WILDCARD_NAME, 0); |
| this.kind = kind; |
| } |
| |
| public char [][] getParameterizedTypeName() { |
| switch (this.kind) { |
| case Wildcard.UNBOUND : |
| return new char[][] { WILDCARD_NAME }; |
| case Wildcard.EXTENDS : |
| return new char[][] { CharOperation.concat(WILDCARD_NAME, WILDCARD_EXTENDS, CharOperation.concatWith(this.bound.getParameterizedTypeName(), '.')) }; |
| default: // SUPER |
| return new char[][] { CharOperation.concat(WILDCARD_NAME, WILDCARD_SUPER, CharOperation.concatWith(this.bound.getParameterizedTypeName(), '.')) }; |
| } |
| } |
| |
| public char [][] getTypeName() { |
| switch (this.kind) { |
| case Wildcard.UNBOUND : |
| return new char[][] { WILDCARD_NAME }; |
| case Wildcard.EXTENDS : |
| return new char[][] { CharOperation.concat(WILDCARD_NAME, WILDCARD_EXTENDS, CharOperation.concatWith(this.bound.getTypeName(), '.')) }; |
| default: // SUPER |
| return new char[][] { CharOperation.concat(WILDCARD_NAME, WILDCARD_SUPER, CharOperation.concatWith(this.bound.getTypeName(), '.')) }; |
| } |
| } |
| |
| private TypeBinding internalResolveType(Scope scope, ReferenceBinding genericType, int rank) { |
| TypeBinding boundType = null; |
| if (this.bound != null) { |
| boundType = scope.kind == Scope.CLASS_SCOPE |
| ? this.bound.resolveType((ClassScope)scope) |
| : this.bound.resolveType((BlockScope)scope, true /* check bounds*/); |
| |
| if (boundType == null) { |
| return null; |
| } |
| } |
| WildcardBinding wildcard = scope.environment().createWildcard(genericType, rank, boundType, this.kind); |
| return this.resolvedType = wildcard; |
| } |
| |
| public StringBuffer printExpression(int indent, StringBuffer output){ |
| switch (this.kind) { |
| case Wildcard.UNBOUND : |
| output.append(WILDCARD_NAME); |
| break; |
| case Wildcard.EXTENDS : |
| output.append(WILDCARD_NAME).append(WILDCARD_EXTENDS); |
| this.bound.printExpression(0, output); |
| break; |
| default: // SUPER |
| output.append(WILDCARD_NAME).append(WILDCARD_SUPER); |
| this.bound.printExpression(0, output); |
| break; |
| } |
| return output; |
| } |
| |
| public TypeBinding resolveTypeArgument(BlockScope blockScope, ReferenceBinding genericType, int rank) { |
| return internalResolveType(blockScope, genericType, rank); |
| } |
| |
| public TypeBinding resolveTypeArgument(ClassScope classScope, ReferenceBinding genericType, int rank) { |
| return internalResolveType(classScope, genericType, rank); |
| } |
| |
| public void traverse(ASTVisitor visitor, BlockScope scope) { |
| if (visitor.visit(this, scope)) { |
| if (this.bound != null) { |
| this.bound.traverse(visitor, scope); |
| } |
| } |
| visitor.endVisit(this, scope); |
| } |
| |
| public void traverse(ASTVisitor visitor, ClassScope scope) { |
| if (visitor.visit(this, scope)) { |
| if (this.bound != null) { |
| this.bound.traverse(visitor, scope); |
| } |
| } |
| visitor.endVisit(this, scope); |
| } |
| } |