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 * 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
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 * (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
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 * 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.
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 * This license is subject to the following condition:
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 * 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.
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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package com.oracle.truffle.regex;

import com.oracle.truffle.api.CompilerAsserts;
import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
import com.oracle.truffle.api.frame.FrameDescriptor;
import com.oracle.truffle.api.frame.VirtualFrame;
import com.oracle.truffle.api.instrumentation.InstrumentableNode;
import com.oracle.truffle.api.nodes.RootNode;
import com.oracle.truffle.api.source.SourceSection;

public final class RegexRootNode extends RootNode {

    private static final FrameDescriptor SHARED_EMPTY_FRAMEDESCRIPTOR = new FrameDescriptor();

    @Child private RegexBodyNode body;

    public RegexRootNode(RegexLanguage language, RegexBodyNode body) {
        super(language, SHARED_EMPTY_FRAMEDESCRIPTOR);
        this.body = body;
    }

    public RegexSource getSource() {
        return body.getSource();
    }

    @Override
    public SourceSection getSourceSection() {
        return body.getSourceSection();
    }

    @Override
    public Object execute(VirtualFrame frame) {
        return body.execute(frame);
    }

    @TruffleBoundary
    @Override
    public String toString() {
        if (body instanceof InstrumentableNode.WrapperNode) {
            return ((InstrumentableNode.WrapperNode) body).getDelegateNode().toString();
        }
        return body.toString();
    }

    
Throws a RegexInterruptedException if the current thread is marked as interrupted. This method should be called in interpreter mode only, since all cancel requests will cause a deopt on the entire AST held by this root node. /**
     * Throws a {@link RegexInterruptedException} if the current thread is marked as interrupted.
     * This method should be called in interpreter mode only, since all cancel requests will cause a
     * deopt on the entire AST held by this root node.
     */
    public static void checkThreadInterrupted() {
        CompilerAsserts.neverPartOfCompilation("do not check thread interruption from compiled code");
        if (Thread.interrupted()) {
            throw new RegexInterruptedException();
        }
    }
}