/**
 * Copyright (C) 2011 rwoo@gmx.de
 *
 * 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.googlecode.catchexception;

class ExceptionCaptor {

    public static Exception captureThrowable(ThrowingCallable exceptionThrower) {
        try {
            exceptionThrower.call();
            // not exception was thrown
            return null;
        } catch (Exception caught) {
            return caught;
        } catch (Throwable throwable) {
            throw new IllegalArgumentException("Throwable is not supported by CatchException library, " +
                    "use CatchThrowable instead");

        }
    }
}
