GenericDeclaration.java

/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements.  See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership.  The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License.  You may obtain a copy of the License at
*
*   http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied.  See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.aries.versioning.utils;

import java.lang.reflect.Modifier;

import org.objectweb.asm.Opcodes;

public abstract class GenericDeclaration {

    private final int access;
    private final String name;
    private final String signature;

    public GenericDeclaration(int access, String name, String signature) {
        int updatedAccess = access;
        // ignore the native or synchronized modifier as they do not affect binary compatibility
        if (Modifier.isNative(access)) {
            updatedAccess = updatedAccess - Opcodes.ACC_NATIVE;
        }
        if (Modifier.isSynchronized(access)) {
            updatedAccess = updatedAccess - Opcodes.ACC_SYNCHRONIZED;
        }
        this.access = access;
        this.name = name;
        this.signature = signature;
    }

    public int getAccess() {
        return access;
    }

    public String getName() {
        return name;
    }


    public String getSignature() {
        return signature;
    }

    public boolean isFinal() {
        return Modifier.isFinal(access);
    }

    public boolean isStatic() {
        return Modifier.isStatic(access);
    }

    public boolean isPublic() {
        return Modifier.isPublic(access);
    }

    public boolean isProtected() {
        return Modifier.isProtected(access);
    }

    public boolean isPrivate() {
        return Modifier.isPrivate(access);
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + access;
        result = prime * result + ((name == null) ? 0 : name.hashCode());

        return result;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) return true;
        if (obj == null) return false;
        if (getClass() != obj.getClass()) return false;
        GenericDeclaration other = (GenericDeclaration) obj;
        if (access != other.access) return false;
        if (name == null) {
            if (other.name != null) return false;
        } else if (!name.equals(other.name)) return false;

        return true;
    }

}