/*

 * Copyright (c) 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 org.graalvm.compiler.hotspot;

import org.graalvm.compiler.core.common.CompilationIdentifier;

import org.graalvm.compiler.core.common.CompilationRequestIdentifier;

import org.graalvm.compiler.debug.GraalError;

import jdk.vm.ci.hotspot.HotSpotCompilationRequest;

import jdk.vm.ci.runtime.JVMCICompiler;

/**

 * {@link CompilationIdentifier} for a {@linkplain HotSpotCompilationRequest hotspot compilation

 * request}.

 */

public class HotSpotCompilationIdentifier implements CompilationRequestIdentifier {

    private final HotSpotCompilationRequest request;

    public HotSpotCompilationIdentifier(HotSpotCompilationRequest request) {

        this.request = request;

    }

    public boolean isOsrCompilation() {

        return request.getEntryBCI() != JVMCICompiler.INVOCATION_ENTRY_BCI;

    }

    @Override

    public final String toString() {

        return toString(Verbosity.DETAILED);

    }

    @Override

    public String toString(Verbosity verbosity) {

        return buildString(new StringBuilder(), verbosity).toString();

    }

    protected StringBuilder buildString(StringBuilder sb, Verbosity verbosity) {

        switch (verbosity) {

            case ID:

                buildID(sb);

                break;

            case NAME:

                buildName(sb);

                break;

            case DETAILED:

                buildID(sb);

                sb.append('[');

                buildName(sb);

                if (isOsrCompilation()) {

                    sb.append("@");

                    sb.append(request.getEntryBCI());

                }

                sb.append(']');

                break;

            default:

                throw new GraalError("unknown verbosity: " + verbosity);

        }

        return sb;

    }

    protected StringBuilder buildName(StringBuilder sb) {

        return sb.append(request.getMethod().format("%H.%n(%p)"));

    }

    protected StringBuilder buildID(StringBuilder sb) {

        if (isOsrCompilation()) {

            sb.append("HotSpotOSRCompilation-");

        } else {

            sb.append("HotSpotCompilation-");

        }

        return sb.append(request.getId());

    }

    @Override

    public HotSpotCompilationRequest getRequest() {

        return request;

    }

}