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/*
* The MIT License (MIT)
*
* Copyright (c) 2017-2022 Yegor Bugayenko
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package org.cactoos.scalar;
import org.cactoos.Func;
import org.cactoos.Scalar;
import org.cactoos.func.UncheckedFunc;
import org.cactoos.text.FormattedText;
import org.cactoos.text.UncheckedText;
/**
* Scalar that wraps an original checked exception thrown by the origin using
* the given wrapping function.
*
* There is no thread-safety guarantee.
*
* @param Type of result
* @param Type of exception
* @since 0.30
*/
public final class Checked implements Scalar {
/**
* Function that wraps exception.
*/
private final Func func;
/**
* Original scalar.
*/
private final Scalar origin;
/**
* Ctor.
* @param scalar Encapsulated scalar
* @param fnc Func that wraps exception
*/
public Checked(final Scalar scalar,
final Func fnc) {
this.func = fnc;
this.origin = scalar;
}
@Override
@SuppressWarnings
(
{
"PMD.AvoidCatchingGenericException",
"PMD.AvoidRethrowingException",
"PMD.PreserveStackTrace"
}
)
public T value() throws E {
try {
return this.origin.value();
// @checkstyle IllegalCatchCheck (1 line)
} catch (final RuntimeException ex) {
throw ex;
} catch (final InterruptedException ex) {
Thread.currentThread().interrupt();
throw this.wrappedException(ex);
// @checkstyle IllegalCatchCheck (1 line)
} catch (final Exception ex) {
throw this.wrappedException(ex);
}
}
/**
* Wraps exception.
* Skips unnecessary wrapping of exceptions of the same type.
* Allows wrapping of exceptions of the same type if the error message
* has been changed.
*
* @param exp Exception
* @return E Wrapped exception
*/
@SuppressWarnings("unchecked")
private E wrappedException(final Exception exp) {
E wrapped = new UncheckedFunc<>(this.func).apply(exp);
final int level = new InheritanceLevel(
exp.getClass(), wrapped.getClass()
).value();
final String message = wrapped.getMessage()
.replaceFirst(
new UncheckedText(
new FormattedText(
"%s: ",
exp.getClass().getName()
)
).asString(),
""
);
if (level >= 0 && message.equals(exp.getMessage())) {
wrapped = (E) exp;
}
return wrapped;
}
}