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/*
 * Copyright 2015 ArcBees Inc.
 *
 * 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.gwtplatform.dispatch.rest.rebind.utils;

import com.google.gwt.core.ext.UnableToCompleteException;
import com.google.gwt.core.ext.typeinfo.JClassType;
import com.google.gwt.core.ext.typeinfo.JPrimitiveType;
import com.google.gwt.core.ext.typeinfo.JType;
import com.google.gwt.core.ext.typeinfo.TypeOracle;
import com.google.gwt.core.ext.typeinfo.TypeOracleException;

public class JPrimitives {
    public static boolean isPrimitiveOrBoxed(JType type) {
        return isPrimitive(type) || isBoxed(type);
    }

    public static boolean isPrimitive(JType type) {
        return type.isPrimitive() != null;
    }

    public static boolean isBoxed(JType type) {
        String name = type.getQualifiedSourceName();

        for (JPrimitiveType primitive : JPrimitiveType.values()) {
            if (name.equals(primitive.getQualifiedBoxedSourceName())) {
                return true;
            }
        }

        return false;
    }

    public static JClassType classTypeOrConvertToBoxed(TypeOracle typeOracle, JType type)
            throws UnableToCompleteException {
        JPrimitiveType primitiveType = type.isPrimitive();
        JClassType classType;

        if (primitiveType != null) {
            classType = convertToBoxed(typeOracle, primitiveType);
        } else {
            classType = type.isClassOrInterface();
        }

        return classType;
    }

    public static JClassType convertToBoxed(TypeOracle typeOracle, JPrimitiveType primitive)
            throws UnableToCompleteException {
        JClassType boxedType;
        try {
            String boxedSourceName = primitive.getQualifiedBoxedSourceName();
            boxedType = typeOracle.parse(boxedSourceName).isClass();
        } catch (TypeOracleException e) {
            boxedType = null;
        }

        return boxedType;
    }
}