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Truffle is a multi-language framework for executing dynamic languages that achieves high performance when combined with Graal.
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/*
 * Copyright (c) 2016, 2022, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * The Universal Permissive License (UPL), Version 1.0
 *
 * Subject to the condition set forth below, permission is hereby granted to any
 * person obtaining a copy of this software, associated documentation and/or
 * data (collectively the "Software"), free of charge and under any and all
 * copyright rights in the Software, and any and all patent rights owned or
 * freely licensable by each licensor hereunder covering either (i) the
 * unmodified Software as contributed to or provided by such licensor, or (ii)
 * the Larger Works (as defined below), to deal in both
 *
 * (a) the Software, and
 *
 * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
 * one is included with the Software each a "Larger Work" to which the Software
 * is contributed by such licensors),
 *
 * without restriction, including without limitation the rights to copy, create
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 * Software and the Larger Work(s), and to sublicense the foregoing rights on
 * either these or other terms.
 *
 * This license is subject to the following condition:
 *
 * The above copyright notice and either this complete permission notice or at a
 * minimum a reference to the UPL must 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,
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 * SOFTWARE.
 */
package com.oracle.truffle.api.interop;

import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;

/**
 * Common super class for exceptions that can occur when sending {@link InteropLibrary interop
 * messages}. This super class is used to catch any kind of these exceptions.
 *
 * @see InteropLibrary
 * @since 0.11
 */
public abstract class InteropException extends Exception {

    InteropException(String message, Throwable cause) {
        super(message, cause);
        assert validateCause(cause);
    }

    InteropException(String message) {
        super(message);
    }

    /**
     * Returns the cause of an interop exception.
     *
     * {@inheritDoc}
     *
     * @since 20.2
     */
    @Override
    @TruffleBoundary
    // GR-23961 - after language adoption we should make this non-synchronized as initCause is not
    // longer used
    public final synchronized Throwable getCause() {
        return super.getCause();
    }

    /**
     * Initializes the casue for an interop exception. Will no longer be supported as of 20.3. Pass
     * in the cause using the interop constructors instead.
     *
     * @deprecated Do no longer use the cause will be initialized finally.
     * @since 20.2
     */
    @Override
    @Deprecated(since = "20.2")
    @TruffleBoundary
    public final synchronized Throwable initCause(Throwable cause) {
        return super.initCause(cause);
    }

    /**
     * No stack trace for interop exceptions.
     *
     * @since 20.2
     */
    @SuppressWarnings("sync-override")
    @Override
    public final Throwable fillInStackTrace() {
        return this;
    }

    @TruffleBoundary
    private static boolean validateCause(Throwable t) {
        if (t == null) {
            return true;
        }
        if (!InteropAccessor.EXCEPTION.isException(t)) {
            throw new IllegalArgumentException("Cause exception must extend AbstractTruffleException but was " + t.getClass() + ".");
        }
        return true;
    }

    private static final long serialVersionUID = -5173354806966156285L;
}