/*
 * Copyright (c) 2018, 2019, 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
 * derivative works of, display, perform, and distribute the Software and make,
 * use, sell, offer for sale, import, export, have made, and have sold the
 * 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,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 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 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(); } } }