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Executor.cs 5.0 KB

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  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 OpenSim 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. using System;
  28. using System.Collections.Generic;
  29. using System.Reflection;
  30. namespace OpenSim.Region.ScriptEngine.Common
  31. {
  32. public class Executor : ExecutorBase
  33. {
  34. // Cache functions by keeping a reference to them in a dictionary
  35. private Dictionary<string, MethodInfo> Events = new Dictionary<string, MethodInfo>();
  36. private Dictionary<string, scriptEvents> m_stateEvents = new Dictionary<string, scriptEvents>();
  37. public Executor(IScript script) : base(script)
  38. {
  39. initEventFlags();
  40. }
  41. protected override scriptEvents DoGetStateEventFlags()
  42. {
  43. // Console.WriteLine("Get event flags for " + m_Script.State);
  44. // Check to see if we've already computed the flags for this state
  45. scriptEvents eventFlags = scriptEvents.None;
  46. if (m_stateEvents.ContainsKey(m_Script.State))
  47. {
  48. m_stateEvents.TryGetValue(m_Script.State, out eventFlags);
  49. return eventFlags;
  50. }
  51. // Fill in the events for this state, cache the results in the map
  52. foreach (KeyValuePair<string, scriptEvents> kvp in m_eventFlagsMap)
  53. {
  54. string evname = m_Script.State + "_event_" + kvp.Key;
  55. Type type = m_Script.GetType();
  56. try
  57. {
  58. MethodInfo mi = type.GetMethod(evname);
  59. if (mi != null)
  60. {
  61. // Console.WriteLine("Found handler for " + kvp.Key);
  62. eventFlags |= kvp.Value;
  63. }
  64. }
  65. catch
  66. {
  67. }
  68. }
  69. // Save the flags we just computed and return the result
  70. m_stateEvents.Add(m_Script.State, eventFlags);
  71. return (eventFlags);
  72. }
  73. protected override void DoExecuteEvent(string FunctionName, object[] args)
  74. {
  75. // IMPORTANT: Types and MemberInfo-derived objects require a LOT of memory.
  76. // Instead use RuntimeTypeHandle, RuntimeFieldHandle and RunTimeHandle (IntPtr) instead!
  77. string EventName = m_Script.State + "_event_" + FunctionName;
  78. //#if DEBUG
  79. // Console.WriteLine("ScriptEngine: Script event function name: " + EventName);
  80. //#endif
  81. if (Events.ContainsKey(EventName) == false)
  82. {
  83. // Not found, create
  84. Type type = m_Script.GetType();
  85. try
  86. {
  87. MethodInfo mi = type.GetMethod(EventName);
  88. Events.Add(EventName, mi);
  89. }
  90. catch
  91. {
  92. // Event name not found, cache it as not found
  93. Events.Add(EventName, null);
  94. }
  95. }
  96. // Get event
  97. MethodInfo ev = null;
  98. Events.TryGetValue(EventName, out ev);
  99. if (ev == null) // No event by that name!
  100. {
  101. //Console.WriteLine("ScriptEngine Can not find any event named: \String.Empty + EventName + "\String.Empty);
  102. return;
  103. }
  104. //cfk 2-7-08 dont need this right now and the default Linux build has DEBUG defined
  105. #if DEBUG
  106. //Console.WriteLine("ScriptEngine: Executing function name: " + EventName);
  107. #endif
  108. // Found
  109. ev.Invoke(m_Script, args);
  110. }
  111. }
  112. }