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/*
* Copyright (c) Contributors, http://opensimulator.org/
* See CONTRIBUTORS.TXT for a full list of copyright holders.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the OpenSim Project nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
using System;
using System.Collections.Generic;
using System.Reflection;
namespace OpenSim.Region.ScriptEngine.Common
{
public class Executor : ExecutorBase
{
// Cache functions by keeping a reference to them in a dictionary
private Dictionary<string, MethodInfo> Events = new Dictionary<string, MethodInfo>();
private Dictionary<string, scriptEvents> m_stateEvents = new Dictionary<string, scriptEvents>();
public Executor(IScript script) : base(script)
{
initEventFlags();
}
protected override scriptEvents DoGetStateEventFlags()
{
// Console.WriteLine("Get event flags for " + m_Script.State);
// Check to see if we've already computed the flags for this state
scriptEvents eventFlags = scriptEvents.None;
if (m_stateEvents.ContainsKey(m_Script.State))
{
m_stateEvents.TryGetValue(m_Script.State, out eventFlags);
return eventFlags;
}
// Fill in the events for this state, cache the results in the map
foreach (KeyValuePair<string, scriptEvents> kvp in m_eventFlagsMap)
{
string evname = m_Script.State + "_event_" + kvp.Key;
Type type = m_Script.GetType();
try
{
MethodInfo mi = type.GetMethod(evname);
if (mi != null)
{
// Console.WriteLine("Found handler for " + kvp.Key);
eventFlags |= kvp.Value;
}
}
catch
{
}
}
// Save the flags we just computed and return the result
m_stateEvents.Add(m_Script.State, eventFlags);
return (eventFlags);
}
protected override void DoExecuteEvent(string FunctionName, object[] args)
{
// IMPORTANT: Types and MemberInfo-derived objects require a LOT of memory.
// Instead use RuntimeTypeHandle, RuntimeFieldHandle and RunTimeHandle (IntPtr) instead!
string EventName = m_Script.State + "_event_" + FunctionName;
//#if DEBUG
// Console.WriteLine("ScriptEngine: Script event function name: " + EventName);
//#endif
if (Events.ContainsKey(EventName) == false)
{
// Not found, create
Type type = m_Script.GetType();
try
{
MethodInfo mi = type.GetMethod(EventName);
Events.Add(EventName, mi);
}
catch
{
// Event name not found, cache it as not found
Events.Add(EventName, null);
}
}
// Get event
MethodInfo ev = null;
Events.TryGetValue(EventName, out ev);
if (ev == null) // No event by that name!
{
//Console.WriteLine("ScriptEngine Can not find any event named: \String.Empty + EventName + "\String.Empty);
return;
}
//cfk 2-7-08 dont need this right now and the default Linux build has DEBUG defined
#if DEBUG
//Console.WriteLine("ScriptEngine: Executing function name: " + EventName);
#endif
// Found
ev.Invoke(m_Script, args);
}
}
}
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