001    /*
002     * Copyright 2004 Sun Microsystems, Inc.  All Rights Reserved.
003     * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004     *
005     * This code is free software; you can redistribute it and/or modify it
006     * under the terms of the GNU General Public License version 2 only, as
007     * published by the Free Software Foundation.  Sun designates this
008     * particular file as subject to the "Classpath" exception as provided
009     * by Sun in the LICENSE file that accompanied this code.
010     *
011     * This code is distributed in the hope that it will be useful, but WITHOUT
012     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
013     * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
014     * version 2 for more details (a copy is included in the LICENSE file that
015     * accompanied this code).
016     *
017     * You should have received a copy of the GNU General Public License version
018     * 2 along with this work; if not, write to the Free Software Foundation,
019     * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
020     *
021     * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
022     * CA 95054 USA or visit www.sun.com if you need additional information or
023     * have any questions.
024     */
025    
026    package com.sun.tools.apt.mirror.declaration;
027    
028    
029    import java.util.Collection;
030    
031    import com.sun.mirror.declaration.*;
032    import com.sun.mirror.type.TypeMirror;
033    import com.sun.mirror.util.DeclarationVisitor;
034    import com.sun.tools.apt.mirror.AptEnv;
035    import com.sun.tools.javac.code.*;
036    import com.sun.tools.javac.code.Symbol.VarSymbol;
037    
038    
039    /**
040     * Implementation of ParameterDeclaration
041     */
042    
043    public class ParameterDeclarationImpl extends DeclarationImpl
044                                          implements ParameterDeclaration
045    {
046        protected VarSymbol sym;
047    
048    
049        ParameterDeclarationImpl(AptEnv env, VarSymbol sym) {
050            super(env, sym);
051            this.sym = sym;
052        }
053    
054    
055        /**
056         * Returns the simple name of the parameter.
057         */
058        public String toString() {
059            return getType() + " " + sym.name;
060        }
061    
062        /**
063         * {@inheritDoc}
064         */
065        public boolean equals(Object obj) {
066            // Neither ParameterDeclarationImpl objects nor their symbols
067            // are cached by the current implementation, so check symbol
068            // owners and names.
069    
070            if (obj instanceof ParameterDeclarationImpl) {
071                ParameterDeclarationImpl that = (ParameterDeclarationImpl) obj;
072                return sym.owner == that.sym.owner &&
073                       sym.name == that.sym.name &&
074                       env == that.env;
075            } else {
076                return false;
077            }
078        }
079    
080        /**
081         * {@inheritDoc}
082         */
083        public int hashCode() {
084            return sym.owner.hashCode() + sym.name.hashCode() + env.hashCode();
085        }
086    
087        /**
088         * {@inheritDoc}
089         */
090        public TypeMirror getType() {
091            return env.typeMaker.getType(sym.type);
092        }
093    
094        /**
095         * {@inheritDoc}
096         */
097        public void accept(DeclarationVisitor v) {
098            v.visitParameterDeclaration(this);
099        }
100    }