/*

 * Copyright (c) 2016, 2018, 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.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * 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.jfr.internal;

import jdk.internal.org.objectweb.asm.commons.Method;

import jdk.jfr.internal.EventInstrumentation.FieldInfo;

public enum EventWriterMethod {

    BEGIN_EVENT("(" + jdk.internal.org.objectweb.asm.Type.getType(PlatformEventType.class).getDescriptor() + ")Z", "???", "beginEvent"),

    END_EVENT("()Z", "???", "endEvent"),

    PUT_BYTE("(B)V", "byte", "putByte"),

    PUT_SHORT("(S)V", "short", "putShort"),

    PUT_INT("(I)V", "int", "putInt"),

    PUT_LONG("(J)V", "long", "putLong"),

    PUT_FLOAT("(F)V", "float", "putFloat"),

    PUT_DOUBLE("(D)V", "double", "putDouble"),

    PUT_CHAR("(C)V", "char", "putChar"),

    PUT_BOOLEAN("(Z)V", "boolean", "putBoolean"),

    PUT_THREAD("(Ljava/lang/Thread;)V", Type.THREAD.getName(), "putThread"),

    PUT_CLASS("(Ljava/lang/Class;)V", Type.CLASS.getName(), "putClass"),

    PUT_STRING("(Ljava/lang/String;Ljdk/jfr/internal/StringPool;)V", Type.STRING.getName(), "putString"),

    PUT_EVENT_THREAD("()V", Type.THREAD.getName(), "putEventThread"),

    PUT_STACK_TRACE("()V", Type.TYPES_PREFIX + "StackTrace", "putStackTrace");

    private final Method asmMethod;

    private final String typeDescriptor;

    EventWriterMethod(String paramSignature, String typeName, String methodName) {

        this.typeDescriptor = ASMToolkit.getDescriptor(typeName);

        this.asmMethod = new Method(methodName, paramSignature);

    }

    public Method asASM() {

        return asmMethod;

    }

    /**

     * Return method in {@link EventWriter} class to use when writing event of

     * a certain type.

     *

     * @param v field info

     *

     * @return the method

     */

    public static EventWriterMethod lookupMethod(FieldInfo v) {

        // event thread

        if (v.fieldName.equals(EventInstrumentation.FIELD_EVENT_THREAD)) {

            return EventWriterMethod.PUT_EVENT_THREAD;

        }

        for (EventWriterMethod m : EventWriterMethod.values()) {

            if (v.fieldDescriptor.equals(m.typeDescriptor)) {

                return m;

            }

        }

        throw new Error("Unknown type " + v.fieldDescriptor);

    }

}