DefaultParameterizedType.java Source code

Introduction

Here is the source code for DefaultParameterizedType.java

Source

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

//package org.bridj.util;

import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;

/**
 * Default implementation of {@link java.lang.reflect.ParameterizedType}
 * 
 * @author Olivier
 */
public class DefaultParameterizedType implements ParameterizedType {
    private final Type[] actualTypeArguments;
    private final Type ownerType;
    private final Type rawType;

    public DefaultParameterizedType(Type ownerType, Type rawType, Type[] actualTypeArguments) {
        this.ownerType = ownerType;
        this.actualTypeArguments = actualTypeArguments;
        this.rawType = rawType;
    }

    public DefaultParameterizedType(Type rawType, Type... actualTypeArguments) {
        this(null, rawType, actualTypeArguments);
    }

    public static Type paramType(Type rawType, Type... actualTypeArguments) {
        return new DefaultParameterizedType(rawType, actualTypeArguments);
    }

    @Override
    public Type[] getActualTypeArguments() {
        return actualTypeArguments.clone();
    }

    @Override
    public java.lang.reflect.Type getOwnerType() {
        return ownerType;
    }

    @Override
    public java.lang.reflect.Type getRawType() {
        return rawType;
    }

    @Override
    public int hashCode() {
        int h = getRawType().hashCode();
        if (getOwnerType() != null)
            h ^= getOwnerType().hashCode();
        for (int i = 0, n = actualTypeArguments.length; i < n; i++)
            h ^= actualTypeArguments[i].hashCode();
        return h;
    }

    static boolean eq(Object a, Object b) {
        if ((a == null) != (b == null))
            return false;
        if (a != null && !a.equals(b))
            return false;
        return true;
    }

    @Override
    public boolean equals(Object o) {
        if (o == null || !(o instanceof DefaultParameterizedType))
            return false;

        DefaultParameterizedType t = (DefaultParameterizedType) o;
        if (!eq(getRawType(), t.getRawType()))
            return false;
        if (!eq(getOwnerType(), t.getOwnerType()))
            return false;

        Object[] tp = t.actualTypeArguments;
        if (actualTypeArguments.length != tp.length)
            return false;

        for (int i = 0, n = actualTypeArguments.length; i < n; i++)
            if (!eq(actualTypeArguments[i], tp[i]))
                return false;

        return true;
    }
}