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/*
 * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */
package com.oracle.truffle.api.test.vm;

import com.oracle.truffle.api.CallTarget;
import com.oracle.truffle.api.Truffle;
import com.oracle.truffle.api.TruffleLanguage;
import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
import com.oracle.truffle.api.TruffleLanguage.Env;
import com.oracle.truffle.api.frame.VirtualFrame;
import com.oracle.truffle.api.nodes.RootNode;
import com.oracle.truffle.api.source.Source;

@TruffleLanguage.Registration(name = "HashLanguage", mimeType = "application/x-test-hash", version = "1.0")
public class HashLanguage extends TruffleLanguage {

    @Override
    protected Env createContext(Env env) {
        return env;
    }

    @Override
    protected CallTarget parse(ParsingRequest env) {
        return Truffle.getRuntime().createCallTarget(new HashNode(this, env.getSource()));
    }

    @Override
    protected Object getLanguageGlobal(Env context) {
        return null;
    }

    @Override
    protected boolean isObjectOfLanguage(Object object) {
        return false;
    }

    private static class HashNode extends RootNode {
        private static int counter;
        private final Source code;
        private final int id;

        HashNode(HashLanguage hash, Source code) {
            super(hash);
            this.code = code;
            id = ++counter;
        }

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

        @TruffleBoundary
        private String result() {
            return System.identityHashCode(this) + "@" + code.getCharacters() + " @ " + id;
        }
    }

    @TruffleLanguage.Registration(name = "AltHash", mimeType = "application/x-test-hash-alt", version = "1.0")
    public static final class SubLang extends HashLanguage {
    }
}