clockwerk-opensim – Blame information for rev 1

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1 vero 1 /*
2 * Copyright (c) Contributors, http://opensimulator.org/
3 * See CONTRIBUTORS.TXT for a full list of copyright holders.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of the OpenSimulator Project nor the
13 * names of its contributors may be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27  
28 using System;
29 using System.Collections.Generic;
30 using System.Reflection;
31 using System.Runtime.Remoting.Lifetime;
32 using OpenSim.Region.ScriptEngine.Shared;
33 using OpenSim.Region.ScriptEngine.Shared.ScriptBase;
34 using log4net;
35  
36 namespace OpenSim.Region.ScriptEngine.Shared.ScriptBase
37 {
38 public class Executor
39 {
40 // private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
41  
42 /// <summary>
43 /// Contains the script to execute functions in.
44 /// </summary>
45 protected IScript m_Script;
46  
47 protected Dictionary<string, scriptEvents> m_eventFlagsMap = new Dictionary<string, scriptEvents>();
48  
49 [Flags]
50 public enum scriptEvents : int
51 {
52 None = 0,
53 attach = 1,
54 collision = 16,
55 collision_end = 32,
56 collision_start = 64,
57 control = 128,
58 dataserver = 256,
59 email = 512,
60 http_response = 1024,
61 land_collision = 2048,
62 land_collision_end = 4096,
63 land_collision_start = 8192,
64 at_target = 16384,
65 at_rot_target = 16777216,
66 listen = 32768,
67 money = 65536,
68 moving_end = 131072,
69 moving_start = 262144,
70 not_at_rot_target = 524288,
71 not_at_target = 1048576,
72 remote_data = 8388608,
73 run_time_permissions = 268435456,
74 state_entry = 1073741824,
75 state_exit = 2,
76 timer = 4,
77 touch = 8,
78 touch_end = 536870912,
79 touch_start = 2097152,
80 object_rez = 4194304
81 }
82  
83 // Cache functions by keeping a reference to them in a dictionary
84 private Dictionary<string, MethodInfo> Events = new Dictionary<string, MethodInfo>();
85 private Dictionary<string, scriptEvents> m_stateEvents = new Dictionary<string, scriptEvents>();
86  
87 public Executor(IScript script)
88 {
89 m_Script = script;
90 initEventFlags();
91 }
92  
93 public scriptEvents GetStateEventFlags(string state)
94 {
95 //m_log.Debug("Get event flags for " + state);
96  
97 // Check to see if we've already computed the flags for this state
98 scriptEvents eventFlags = scriptEvents.None;
99 if (m_stateEvents.ContainsKey(state))
100 {
101 m_stateEvents.TryGetValue(state, out eventFlags);
102 return eventFlags;
103 }
104  
105 Type type=m_Script.GetType();
106  
107 // Fill in the events for this state, cache the results in the map
108 foreach (KeyValuePair<string, scriptEvents> kvp in m_eventFlagsMap)
109 {
110 string evname = state + "_event_" + kvp.Key;
111 //m_log.Debug("Trying event "+evname);
112 try
113 {
114 MethodInfo mi = type.GetMethod(evname);
115 if (mi != null)
116 {
117 //m_log.Debug("Found handler for " + kvp.Key);
118 eventFlags |= kvp.Value;
119 }
120 }
121 catch(Exception)
122 {
123 //m_log.Debug("Exeption in GetMethod:\n"+e.ToString());
124 }
125 }
126  
127 // Save the flags we just computed and return the result
128 if (eventFlags != 0)
129 m_stateEvents.Add(state, eventFlags);
130  
131 //m_log.Debug("Returning {0:x}", eventFlags);
132 return (eventFlags);
133 }
134  
135 public void ExecuteEvent(string state, string FunctionName, object[] args)
136 {
137 // IMPORTANT: Types and MemberInfo-derived objects require a LOT of memory.
138 // Instead use RuntimeTypeHandle, RuntimeFieldHandle and RunTimeHandle (IntPtr) instead!
139  
140 string EventName = state + "_event_" + FunctionName;
141  
142 //#if DEBUG
143 //m_log.Debug("ScriptEngine: Script event function name: " + EventName);
144 //#endif
145  
146 if (Events.ContainsKey(EventName) == false)
147 {
148 // Not found, create
149 Type type = m_Script.GetType();
150 try
151 {
152 MethodInfo mi = type.GetMethod(EventName);
153 Events.Add(EventName, mi);
154 }
155 catch
156 {
157 // m_log.Error("Event "+EventName+" not found.");
158 // Event name not found, cache it as not found
159 Events.Add(EventName, null);
160 }
161 }
162  
163 // Get event
164 MethodInfo ev = null;
165 Events.TryGetValue(EventName, out ev);
166  
167 if (ev == null) // No event by that name!
168 {
169 //m_log.Debug("ScriptEngine Can not find any event named: \String.Empty + EventName + "\String.Empty);
170 return;
171 }
172  
173 //cfk 2-7-08 dont need this right now and the default Linux build has DEBUG defined
174 #if DEBUG
175 //m_log.Debug("ScriptEngine: Executing function name: " + EventName);
176 #endif
177 // Found
178 try
179 {
180 ev.Invoke(m_Script, args);
181 }
182 catch (TargetInvocationException tie)
183 {
184 // Grab the inner exception and rethrow it, unless the inner
185 // exception is an EventAbortException as this indicates event
186 // invocation termination due to a state change.
187 // DO NOT THROW JUST THE INNER EXCEPTION!
188 // FriendlyErrors depends on getting the whole exception!
189 //
190 if (!(tie.InnerException is EventAbortException))
191 {
192 throw;
193 }
194 }
195  
196 }
197  
198 protected void initEventFlags()
199 {
200 // Initialize the table if it hasn't already been done
201 if (m_eventFlagsMap.Count > 0)
202 {
203 return;
204 }
205  
206 m_eventFlagsMap.Add("attach", scriptEvents.attach);
207 m_eventFlagsMap.Add("at_rot_target", scriptEvents.at_rot_target);
208 m_eventFlagsMap.Add("at_target", scriptEvents.at_target);
209 // m_eventFlagsMap.Add("changed",(long)scriptEvents.changed);
210 m_eventFlagsMap.Add("collision", scriptEvents.collision);
211 m_eventFlagsMap.Add("collision_end", scriptEvents.collision_end);
212 m_eventFlagsMap.Add("collision_start", scriptEvents.collision_start);
213 m_eventFlagsMap.Add("control", scriptEvents.control);
214 m_eventFlagsMap.Add("dataserver", scriptEvents.dataserver);
215 m_eventFlagsMap.Add("email", scriptEvents.email);
216 m_eventFlagsMap.Add("http_response", scriptEvents.http_response);
217 m_eventFlagsMap.Add("land_collision", scriptEvents.land_collision);
218 m_eventFlagsMap.Add("land_collision_end", scriptEvents.land_collision_end);
219 m_eventFlagsMap.Add("land_collision_start", scriptEvents.land_collision_start);
220 // m_eventFlagsMap.Add("link_message",scriptEvents.link_message);
221 m_eventFlagsMap.Add("listen", scriptEvents.listen);
222 m_eventFlagsMap.Add("money", scriptEvents.money);
223 m_eventFlagsMap.Add("moving_end", scriptEvents.moving_end);
224 m_eventFlagsMap.Add("moving_start", scriptEvents.moving_start);
225 m_eventFlagsMap.Add("not_at_rot_target", scriptEvents.not_at_rot_target);
226 m_eventFlagsMap.Add("not_at_target", scriptEvents.not_at_target);
227 // m_eventFlagsMap.Add("no_sensor",(long)scriptEvents.no_sensor);
228 // m_eventFlagsMap.Add("on_rez",(long)scriptEvents.on_rez);
229 m_eventFlagsMap.Add("remote_data", scriptEvents.remote_data);
230 m_eventFlagsMap.Add("run_time_permissions", scriptEvents.run_time_permissions);
231 // m_eventFlagsMap.Add("sensor",(long)scriptEvents.sensor);
232 m_eventFlagsMap.Add("state_entry", scriptEvents.state_entry);
233 m_eventFlagsMap.Add("state_exit", scriptEvents.state_exit);
234 m_eventFlagsMap.Add("timer", scriptEvents.timer);
235 m_eventFlagsMap.Add("touch", scriptEvents.touch);
236 m_eventFlagsMap.Add("touch_end", scriptEvents.touch_end);
237 m_eventFlagsMap.Add("touch_start", scriptEvents.touch_start);
238 m_eventFlagsMap.Add("object_rez", scriptEvents.object_rez);
239 }
240 }
241 }