/**
* Copyright 2011-2017 Asakusa Framework Team.
*
* 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.asakusafw.operator.description;
import java.text.MessageFormat;
import java.util.Objects;
/**
* Represents an enum constant.
*/
public class EnumConstantDescription implements ValueDescription {
private final ClassDescription declaringClass;
private final String name;
/**
* Creates a new instance.
* @param declaringClass the declaring class
* @param name the constant name
*/
public EnumConstantDescription(ClassDescription declaringClass, String name) {
this.declaringClass = Objects.requireNonNull(declaringClass);
this.name = Objects.requireNonNull(name);
}
/**
* Creates a new instance.
* @param value the enum constant
* @return the created instance
*/
public static EnumConstantDescription of(Enum<?> value) {
ClassDescription declaring = Descriptions.classOf(value.getDeclaringClass());
String name = value.name();
return new EnumConstantDescription(declaring, name);
}
@Override
public ValueKind getValueKind() {
return ValueKind.ENUM_CONSTANT;
}
@Override
public ClassDescription getValueType() {
return getDeclaringClass();
}
/**
* Returns the declaring enum type.
* @return the declaring enum type
*/
public ClassDescription getDeclaringClass() {
return declaringClass;
}
/**
* Returns the constant name.
* @return the constant name
*/
public String getName() {
return name;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + declaringClass.hashCode();
result = prime * result + 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;
}
EnumConstantDescription other = (EnumConstantDescription) obj;
if (!declaringClass.equals(other.declaringClass)) {
return false;
}
if (!name.equals(other.name)) {
return false;
}
return true;
}
@Override
public String toString() {
return MessageFormat.format(
"EnumConstant({0}#{1})", //$NON-NLS-1$
declaringClass.getClassName(),
name);
}
}