clockwerk-opensim-stable – Rev 1
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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 OpenSimulator 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;
using System.Runtime.Remoting.Lifetime;
using OpenSim.Region.ScriptEngine.Shared;
using OpenSim.Region.ScriptEngine.Shared.ScriptBase;
using log4net;
namespace OpenSim.Region.ScriptEngine.Shared.ScriptBase
{
public class Executor
{
// private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
/// <summary>
/// Contains the script to execute functions in.
/// </summary>
protected IScript m_Script;
protected Dictionary<string, scriptEvents> m_eventFlagsMap = new Dictionary<string, scriptEvents>();
[Flags]
public enum scriptEvents : int
{
None = 0,
attach = 1,
collision = 16,
collision_end = 32,
collision_start = 64,
control = 128,
dataserver = 256,
email = 512,
http_response = 1024,
land_collision = 2048,
land_collision_end = 4096,
land_collision_start = 8192,
at_target = 16384,
at_rot_target = 16777216,
listen = 32768,
money = 65536,
moving_end = 131072,
moving_start = 262144,
not_at_rot_target = 524288,
not_at_target = 1048576,
remote_data = 8388608,
run_time_permissions = 268435456,
state_entry = 1073741824,
state_exit = 2,
timer = 4,
touch = 8,
touch_end = 536870912,
touch_start = 2097152,
object_rez = 4194304
}
// 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)
{
m_Script = script;
initEventFlags();
}
public scriptEvents GetStateEventFlags(string state)
{
//m_log.Debug("Get event flags for " + state);
// Check to see if we've already computed the flags for this state
scriptEvents eventFlags = scriptEvents.None;
if (m_stateEvents.ContainsKey(state))
{
m_stateEvents.TryGetValue(state, out eventFlags);
return eventFlags;
}
Type type=m_Script.GetType();
// Fill in the events for this state, cache the results in the map
foreach (KeyValuePair<string, scriptEvents> kvp in m_eventFlagsMap)
{
string evname = state + "_event_" + kvp.Key;
//m_log.Debug("Trying event "+evname);
try
{
MethodInfo mi = type.GetMethod(evname);
if (mi != null)
{
//m_log.Debug("Found handler for " + kvp.Key);
eventFlags |= kvp.Value;
}
}
catch(Exception)
{
//m_log.Debug("Exeption in GetMethod:\n"+e.ToString());
}
}
// Save the flags we just computed and return the result
if (eventFlags != 0)
m_stateEvents.Add(state, eventFlags);
//m_log.Debug("Returning {0:x}", eventFlags);
return (eventFlags);
}
public void ExecuteEvent(string state, 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 = state + "_event_" + FunctionName;
//#if DEBUG
//m_log.Debug("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
{
// m_log.Error("Event "+EventName+" not found.");
// 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!
{
//m_log.Debug("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
//m_log.Debug("ScriptEngine: Executing function name: " + EventName);
#endif
// Found
try
{
ev.Invoke(m_Script, args);
}
catch (TargetInvocationException tie)
{
// Grab the inner exception and rethrow it, unless the inner
// exception is an EventAbortException as this indicates event
// invocation termination due to a state change.
// DO NOT THROW JUST THE INNER EXCEPTION!
// FriendlyErrors depends on getting the whole exception!
//
if (!(tie.InnerException is EventAbortException))
{
throw;
}
}
}
protected void initEventFlags()
{
// Initialize the table if it hasn't already been done
if (m_eventFlagsMap.Count > 0)
{
return;
}
m_eventFlagsMap.Add("attach", scriptEvents.attach);
m_eventFlagsMap.Add("at_rot_target", scriptEvents.at_rot_target);
m_eventFlagsMap.Add("at_target", scriptEvents.at_target);
// m_eventFlagsMap.Add("changed",(long)scriptEvents.changed);
m_eventFlagsMap.Add("collision", scriptEvents.collision);
m_eventFlagsMap.Add("collision_end", scriptEvents.collision_end);
m_eventFlagsMap.Add("collision_start", scriptEvents.collision_start);
m_eventFlagsMap.Add("control", scriptEvents.control);
m_eventFlagsMap.Add("dataserver", scriptEvents.dataserver);
m_eventFlagsMap.Add("email", scriptEvents.email);
m_eventFlagsMap.Add("http_response", scriptEvents.http_response);
m_eventFlagsMap.Add("land_collision", scriptEvents.land_collision);
m_eventFlagsMap.Add("land_collision_end", scriptEvents.land_collision_end);
m_eventFlagsMap.Add("land_collision_start", scriptEvents.land_collision_start);
// m_eventFlagsMap.Add("link_message",scriptEvents.link_message);
m_eventFlagsMap.Add("listen", scriptEvents.listen);
m_eventFlagsMap.Add("money", scriptEvents.money);
m_eventFlagsMap.Add("moving_end", scriptEvents.moving_end);
m_eventFlagsMap.Add("moving_start", scriptEvents.moving_start);
m_eventFlagsMap.Add("not_at_rot_target", scriptEvents.not_at_rot_target);
m_eventFlagsMap.Add("not_at_target", scriptEvents.not_at_target);
// m_eventFlagsMap.Add("no_sensor",(long)scriptEvents.no_sensor);
// m_eventFlagsMap.Add("on_rez",(long)scriptEvents.on_rez);
m_eventFlagsMap.Add("remote_data", scriptEvents.remote_data);
m_eventFlagsMap.Add("run_time_permissions", scriptEvents.run_time_permissions);
// m_eventFlagsMap.Add("sensor",(long)scriptEvents.sensor);
m_eventFlagsMap.Add("state_entry", scriptEvents.state_entry);
m_eventFlagsMap.Add("state_exit", scriptEvents.state_exit);
m_eventFlagsMap.Add("timer", scriptEvents.timer);
m_eventFlagsMap.Add("touch", scriptEvents.touch);
m_eventFlagsMap.Add("touch_end", scriptEvents.touch_end);
m_eventFlagsMap.Add("touch_start", scriptEvents.touch_start);
m_eventFlagsMap.Add("object_rez", scriptEvents.object_rez);
}
}
}