/**
* 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.dmdl.directio.util;
import java.util.Objects;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.asakusafw.utils.java.model.util.Models;
/**
* Represents a class name.
* @since 0.9.1
*/
public class ClassName {
static final Logger LOG = LoggerFactory.getLogger(ClassName.class);
private final String name;
/**
* Creates a new instance.
* @param name the class name
*/
public ClassName(String name) {
this.name = name;
}
/**
* Returns whether or not the given string is a valid class name.
* @param name the target string
* @return {@code true} if it is valid, otherwise {@code false}
*/
public static boolean isValid(String name) {
if (checkSyntax(name) == false) {
return false;
}
try {
Models.toName(Models.getModelFactory(), name);
return true;
} catch (IllegalArgumentException e) {
LOG.trace("invalid class name: {}", name, e); //$NON-NLS-1$
return false;
}
}
private static boolean checkSyntax(String name) {
boolean start = false;
for (char c : name.toCharArray()) {
if (start) {
if (Character.isJavaIdentifierStart(c)) {
start = false;
continue;
}
return false;
} else {
if (c == '.') {
start = true;
continue;
}
if (Character.isJavaIdentifierPart(c)) {
continue;
}
return false;
}
}
return start == false;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + Objects.hashCode(name);
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
ClassName other = (ClassName) obj;
if (!Objects.equals(name, other.name)) {
return false;
}
return true;
}
@Override
public String toString() {
return name;
}
}