org.eclipse.objectteams.otredyn.bytecode.Member.java Source code

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Here is the source code for org.eclipse.objectteams.otredyn.bytecode.Member.java

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/**********************************************************************
 * This file is part of "Object Teams Dynamic Runtime Environment"
 * 
 * Copyright 2009, 2014 Oliver Frank 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
 * 
 * Please visit http://www.eclipse.org/objectteams for updates and contact.
 * 
 * Contributors:
 *      Oliver Frank - Initial API and implementation
 *      Stephan Herrmann - Initial API and implementation
 **********************************************************************/
package org.eclipse.objectteams.otredyn.bytecode;

import java.util.HashMap;
import java.util.Map;

import org.eclipse.objectteams.otredyn.runtime.IBoundClass;
import org.eclipse.objectteams.otredyn.runtime.IMember;
import org.objectweb.asm.Opcodes;

/**
 * Represents a member of a class.
 * This class abstract. Instances of this class can only be created
 * as {@link Field} or {@link Method}.
 * @author Oliver Frank
 */
public abstract class Member implements IMember {

    /** Map of globally unique Ids by keys that are constructed from the resolved target member. */
    private static Map<String, Integer> idMap = new HashMap<String, Integer>();
    private static int currentId = 0;

    private String name;
    private String signature;
    private boolean isStatic;
    private int accessFlags;

    public Member(String name, String signature) {
        this.name = name;
        this.signature = signature;
    }

    public Member(String name, String signature, boolean isStatic, int accessFlags) {
        this(name, signature);
        this.isStatic = isStatic;
        this.accessFlags = accessFlags;
    }

    public boolean isStatic() {
        return isStatic;
    }

    public String getName() {
        return name;
    }

    public String getSignature() {
        return signature;
    }

    public void setStatic(boolean isStatic) {
        this.isStatic = isStatic;
    }

    public boolean isPrivate() {
        return (this.accessFlags & Opcodes.ACC_PRIVATE) != 0;
    }

    public int getAccessFlags() {
        return this.accessFlags;
    }

    /**
     * Returns a globally unique id for a given key.
     * @param key
     * @return
     */
    protected int getId(String key) {
        Integer id = idMap.get(key);
        if (id == null) {
            synchronized (idMap) {
                idMap.put(key, currentId);
                return currentId++;
            }
        }

        return id;
    }

    public abstract int getGlobalId(IBoundClass clazz);
}