/*
 ***** BEGIN LICENSE BLOCK *****
 * Version: EPL 2.0/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Eclipse Public
 * License Version 2.0 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.eclipse.org/legal/epl-v20.html
 *
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 *
 * Copyright (C) 2010 Charles Oliver Nutter <headius@headius.com>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either of the GNU General Public License Version 2 or later (the "GPL"),
 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
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 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the EPL, the GPL or the LGPL.
 ***** END LICENSE BLOCK *****/

package org.jruby.internal.runtime.methods;

import org.jruby.RubyModule;
import org.jruby.runtime.ArgumentDescriptor;
import org.jruby.runtime.Block;
import org.jruby.runtime.Helpers;
import org.jruby.runtime.Signature;
import org.jruby.runtime.ThreadContext;
import org.jruby.runtime.builtin.IRubyObject;

A DynamicMethod wrapper that performs timed profiling for each call.
/**
 * A DynamicMethod wrapper that performs timed profiling for each call.
 */
public class ProfilingDynamicMethod extends DelegatingDynamicMethod implements IRMethodArgs {

    public ProfilingDynamicMethod(DynamicMethod delegate) {
        super(delegate);
    }

    @Override
    public IRubyObject call(ThreadContext context, IRubyObject self, RubyModule clazz, String name) {
        int previousSerial = context.profileEnter(name, this.delegate.getRealMethod());
        final long start = System.nanoTime();
        try {
            return delegate.call(context, self, clazz, name);
        } finally {
            context.profileExit(previousSerial, start);
        }
    }

    @Override
    public IRubyObject call(ThreadContext context, IRubyObject self, RubyModule clazz, String name, IRubyObject arg0) {
        int previousSerial = context.profileEnter(name, this.delegate.getRealMethod());
        final long start = System.nanoTime();
        try {
            return delegate.call(context, self, clazz, name, arg0);
        } finally {
            context.profileExit(previousSerial, start);
        }
    }

    @Override
    public IRubyObject call(ThreadContext context, IRubyObject self, RubyModule clazz, String name, IRubyObject arg0, IRubyObject arg1) {
        int previousSerial = context.profileEnter(name, this.delegate.getRealMethod());
        final long start = System.nanoTime();
        try {
            return delegate.call(context, self, clazz, name, arg0, arg1);
        } finally {
            context.profileExit(previousSerial, start);
        }
    }

    @Override
    public IRubyObject call(ThreadContext context, IRubyObject self, RubyModule clazz, String name, IRubyObject arg0, IRubyObject arg1, IRubyObject arg2) {
        int previousSerial = context.profileEnter(name, this.delegate.getRealMethod());
        final long start = System.nanoTime();
        try {
            return delegate.call(context, self, clazz, name, arg0, arg1, arg2);
        } finally {
            context.profileExit(previousSerial, start);
        }
    }

    @Override
    public IRubyObject call(ThreadContext context, IRubyObject self, RubyModule clazz, String name, IRubyObject[] args) {
        int previousSerial = context.profileEnter(name, this.delegate.getRealMethod());
        long start = System.nanoTime();
        try {
            return delegate.call(context, self, clazz, name, args);
        } finally {
            context.profileExit(previousSerial, start);
        }
    }

    @Override
    public IRubyObject call(ThreadContext context, IRubyObject self, RubyModule clazz, String name, Block block) {
        int previousSerial = context.profileEnter(name, this.delegate.getRealMethod());
        final long start = System.nanoTime();
        try {
            return delegate.call(context, self, clazz, name, block);
        } finally {
            context.profileExit(previousSerial, start);
        }
    }

    @Override
    public IRubyObject call(ThreadContext context, IRubyObject self, RubyModule clazz, String name, IRubyObject arg0, Block block) {
        int previousSerial = context.profileEnter(name, this.delegate.getRealMethod());
        final long start = System.nanoTime();
        try {
            return delegate.call(context, self, clazz, name, arg0, block);
        } finally {
            context.profileExit(previousSerial, start);
        }
    }

    @Override
    public IRubyObject call(ThreadContext context, IRubyObject self, RubyModule clazz, String name, IRubyObject arg0, IRubyObject arg1, Block block) {
        int previousSerial = context.profileEnter(name, this.delegate.getRealMethod());
        final long start = System.nanoTime();
        try {
            return delegate.call(context, self, clazz, name, arg0, arg1, block);
        } finally {
            context.profileExit(previousSerial, start);
        }
    }

    @Override
    public IRubyObject call(ThreadContext context, IRubyObject self, RubyModule clazz, String name, IRubyObject arg0, IRubyObject arg1, IRubyObject arg2, Block block) {
        int previousSerial = context.profileEnter(name, this.delegate.getRealMethod());
        final long start = System.nanoTime();
        try {
            return delegate.call(context, self, clazz, name, arg0, arg1, arg2, block);
        } finally {
            context.profileExit(previousSerial, start);
        }
    }

    @Override
    public IRubyObject call(ThreadContext context, IRubyObject self, RubyModule clazz, String name, IRubyObject[] args, Block block) {
        int previousSerial = context.profileEnter(name, this.delegate.getRealMethod());
        final long start = System.nanoTime();
        try {
            return delegate.call(context, self, clazz, name, args, block);
        } finally {
            context.profileExit(previousSerial, start);
        }
    }

    @Override
    public DynamicMethod dup() {
        return new ProfilingDynamicMethod(delegate.dup());
    }

    public Signature getSignature() {
        return delegate instanceof IRMethodArgs ?
                ((IRMethodArgs) delegate).getSignature() : Signature.from(delegate.getArity());
    }

    public ArgumentDescriptor[] getArgumentDescriptors() {
        return delegate instanceof IRMethodArgs ?
                ((IRMethodArgs) delegate).getArgumentDescriptors() : Helpers.methodToArgumentDescriptors(delegate);
    }
}