/*
* Copyright (c) 2002-2012 Alibaba Group Holding Limited.
* All rights reserved.
*
* Licensed 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 com.alibaba.citrus.generictype.impl;
import static com.alibaba.citrus.util.Assert.*;
import static java.lang.reflect.Modifier.*;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import com.alibaba.citrus.generictype.ClassTypeInfo;
import com.alibaba.citrus.generictype.FieldInfo;
import com.alibaba.citrus.generictype.GenericDeclarationInfo;
import com.alibaba.citrus.generictype.TypeInfo;
/**
* 对{@link FieldInfo}的实现。
*
* @author Michael Zhou
*/
public class FieldImpl implements FieldInfo {
private final static int MODIFIERS_MASK = PRIVATE | PUBLIC | PROTECTED | STATIC;
private final int modifiers;
private final Field field;
private final ClassTypeInfo declaringType;
private final TypeInfo type;
FieldImpl(Field field, ClassTypeInfo declaringType, TypeInfo type) {
this.field = assertNotNull(field, "field");
this.modifiers = field.getModifiers() & MODIFIERS_MASK;
this.declaringType = declaringType;
this.type = type;
}
public Field getField() {
return field;
}
public TypeInfo getDeclaringType() {
return declaringType;
}
public int getModifiers() {
return modifiers;
}
public TypeInfo getType() {
return type;
}
public String getName() {
return field.getName();
}
public FieldInfo resolve(GenericDeclarationInfo context) {
return resolve(context, true);
}
public FieldInfo resolve(GenericDeclarationInfo context, boolean includeBaseType) {
TypeInfo resolvedType = type.resolve(context, includeBaseType);
if (type != resolvedType) {
return new FieldImpl(field, declaringType, resolvedType);
} else {
return this;
}
}
@Override
public int hashCode() {
return getClass().hashCode() ^ field.hashCode();
}
@Override
public boolean equals(Object other) {
if (other == this) {
return true;
}
if (other == null || !other.getClass().equals(getClass())) {
return false;
}
FieldImpl otherField = (FieldImpl) other;
return field.equals(otherField.field);
}
@Override
public String toString() {
StringBuilder buf = new StringBuilder();
String mod = Modifier.toString(modifiers);
if (mod.length() > 0) {
buf.append(mod).append(" ");
}
buf.append(type).append(" ");
buf.append(declaringType.getSimpleName()).append(".").append(getName());
return buf.toString();
}
}