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/*
 * Copyright 2003-2007 the original author or authors.
 *
 * 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 org.codehaus.groovy.reflection.stdclasses;

import groovy.lang.GString;
import org.codehaus.groovy.reflection.CachedClass;
import org.codehaus.groovy.reflection.ClassInfo;
import org.codehaus.groovy.reflection.ReflectionCache;

/**
 * @author Alex.Tkachman
 */
public class StringCachedClass extends CachedClass {
    private static final Class STRING_CLASS = String.class;
    private static final Class GSTRING_CLASS = GString.class;

    public StringCachedClass(ClassInfo classInfo) {
        super(STRING_CLASS, classInfo);
    }

    public boolean isDirectlyAssignable(Object argument) {
        return argument instanceof String;
    }

    public boolean isAssignableFrom(Class classToTransformFrom) {
        return  classToTransformFrom == null
              || classToTransformFrom == STRING_CLASS
              || ReflectionCache.isAssignableFrom(GSTRING_CLASS,classToTransformFrom);
    }

    public Object coerceArgument(Object argument) {
        return argument instanceof GString ? argument.toString() : argument;
    }
}