/*

 * Copyright (c) 2014, 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 jdk.vm.ci.hotspot;

/**

 * An empty implementation for {@link EventProvider}. This implementation is used when no logging is

 * requested.

 */

final class EmptyEventProvider implements EventProvider {

    static InternalError shouldNotReachHere() {

        throw new InternalError("should not reach here");

    }

    @Override

    public CompilationEvent newCompilationEvent() {

        return new EmptyCompilationEvent();

    }

    static class EmptyCompilationEvent implements CompilationEvent {

        @Override

        public void commit() {

            throw shouldNotReachHere();

        }

        @Override

        public boolean shouldWrite() {

            // Events of this class should never been written.

            return false;

        }

        @Override

        public void begin() {

        }

        @Override

        public void end() {

        }

        @Override

        public void setMethod(String method) {

            throw shouldNotReachHere();

        }

        @Override

        public void setCompileId(int compileId) {

            throw shouldNotReachHere();

        }

        @Override

        public void setCompileLevel(int compileLevel) {

            throw shouldNotReachHere();

        }

        @Override

        public void setSucceeded(boolean succeeded) {

            throw shouldNotReachHere();

        }

        @Override

        public void setIsOsr(boolean isOsr) {

            throw shouldNotReachHere();

        }

        @Override

        public void setCodeSize(int codeSize) {

            throw shouldNotReachHere();

        }

        @Override

        public void setInlinedBytes(int inlinedBytes) {

            throw shouldNotReachHere();

        }

    }

    @Override

    public CompilerFailureEvent newCompilerFailureEvent() {

        return new EmptyCompilerFailureEvent();

    }

    static class EmptyCompilerFailureEvent implements CompilerFailureEvent {

        @Override

        public void commit() {

            throw shouldNotReachHere();

        }

        @Override

        public boolean shouldWrite() {

            // Events of this class should never been written.

            return false;

        }

        @Override

        public void setCompileId(int compileId) {

            throw shouldNotReachHere();

        }

        @Override

        public void setMessage(String message) {

            throw shouldNotReachHere();

        }

    }

}