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    30. 

  30. <h1>wxlstate.cpp</h1><a href="wxlstate_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/////////////////////////////////////////////////////////////////////////////</span>
    31. 

  31. <a name="l00002"></a>00002 <span class="comment"></span><span class="comment">// Name:        wxlstate.cpp</span>
    32. 

  32. <a name="l00003"></a>00003 <span class="comment">// Purpose:     wxLuaState, a wxWidgets interface to Lua</span>
    33. 

  33. <a name="l00004"></a>00004 <span class="comment">// Author:      Ray Gilbert, John Labenski, J Winwood (Reuben Thomas for bitlib at bottom)</span>
    34. 

  34. <a name="l00005"></a>00005 <span class="comment">// Created:     14/11/2001</span>
    35. 

  35. <a name="l00006"></a>00006 <span class="comment">// Copyright:   (c) 2001-2002 Lomtick Software. All rights reserved.</span>
    36. 

  36. <a name="l00007"></a>00007 <span class="comment">// Licence:     wxWidgets licence</span><span class="comment"></span>
    37. 

  37. <a name="l00008"></a>00008 <span class="comment">/////////////////////////////////////////////////////////////////////////////</span>
    38. 

  38. <a name="l00009"></a>00009 <span class="comment"></span>
    39. 

  39. <a name="l00010"></a>00010 <span class="comment">// For compilers that support precompilation, includes &quot;wx/wx.h&quot;</span>
    40. 

  40. <a name="l00011"></a>00011 <span class="preprocessor">#include &quot;wx/wxprec.h&quot;</span>
    41. 

  41. <a name="l00012"></a>00012 
    42. 

  42. <a name="l00013"></a>00013 <span class="preprocessor">#ifdef __BORLANDC__</span>
    43. 

  43. <a name="l00014"></a>00014 <span class="preprocessor"></span><span class="preprocessor">    #pragma hdrstop</span>
    44. 

  44. <a name="l00015"></a>00015 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
    45. 

  45. <a name="l00016"></a>00016 <span class="preprocessor"></span>
    46. 

  46. <a name="l00017"></a>00017 <span class="comment">// for all others, include the necessary headers</span>
    47. 

  47. <a name="l00018"></a>00018 <span class="preprocessor">#ifndef WX_PRECOMP</span>
    48. 

  48. <a name="l00019"></a>00019 <span class="preprocessor"></span><span class="preprocessor">    #include &quot;wx/wx.h&quot;</span>
    49. 

  49. <a name="l00020"></a>00020 <span class="preprocessor">#endif</span>
    50. 

  50. <a name="l00021"></a>00021 <span class="preprocessor"></span>
    51. 

  51. <a name="l00022"></a>00022 <span class="preprocessor">#include &quot;<a class="code" href="wxlstate_8h.html">wxlua/include/wxlstate.h</a>&quot;</span>
    52. 

  52. <a name="l00023"></a>00023 <span class="preprocessor">#include &quot;<a class="code" href="wxlcallb_8h.html">wxlua/include/wxlcallb.h</a>&quot;</span>
    53. 

  53. <a name="l00024"></a>00024 <span class="preprocessor">#include &quot;wx/tokenzr.h&quot;</span>
    54. 

  54. <a name="l00025"></a>00025 
    55. 

  55. <a name="l00026"></a>00026 <span class="comment">//#include &quot;wxluadebug/include/wxldebug.h&quot; // for debugging only</span>
    56. 

  56. <a name="l00027"></a>00027 
    57. 

  57. <a name="l00028"></a><a class="code" href="wxlstate_8cpp.html#a0ef6804bd2cb63f4fa705727f8871cbd">00028</a> <span class="keyword">const</span> <span class="keywordtype">char</span>* <a class="code" href="wxlstate_8h.html#a0ef6804bd2cb63f4fa705727f8871cbd">wxlua_lreg_types_key</a>               = <span class="stringliteral">&quot;wxLua metatable class types&quot;</span>;
    58. 

  58. <a name="l00029"></a><a class="code" href="wxlstate_8cpp.html#ac4ac0a3575fafde31e659ced85f69c4d">00029</a> <span class="keyword">const</span> <span class="keywordtype">char</span>* <a class="code" href="wxlstate_8h.html#ac4ac0a3575fafde31e659ced85f69c4d">wxlua_lreg_refs_key</a>                = <span class="stringliteral">&quot;wxLua Lua object refs&quot;</span>;
    59. 

  59. <a name="l00030"></a><a class="code" href="wxlstate_8cpp.html#a30c2d5556a4a278368b48fe0b7bb3fda">00030</a> <span class="keyword">const</span> <span class="keywordtype">char</span>* <a class="code" href="wxlstate_8h.html#a30c2d5556a4a278368b48fe0b7bb3fda">wxlua_lreg_debug_refs_key</a>          = <span class="stringliteral">&quot;wxLuaDebugData refs&quot;</span>;
    60. 

  60. <a name="l00031"></a><a class="code" href="wxlstate_8cpp.html#a0bcf696ed6d6e2b4218e9a8852a164ef">00031</a> <span class="keyword">const</span> <span class="keywordtype">char</span>* <a class="code" href="wxlstate_8h.html#a0bcf696ed6d6e2b4218e9a8852a164ef">wxlua_lreg_classes_key</a>             = <span class="stringliteral">&quot;wxLuaBindClass structs&quot;</span>;
    61. 

  61. <a name="l00032"></a><a class="code" href="wxlstate_8cpp.html#a274b8b7aae6f647e3e69d098962b7b1d">00032</a> <span class="keyword">const</span> <span class="keywordtype">char</span>* <a class="code" href="wxlstate_8h.html#a274b8b7aae6f647e3e69d098962b7b1d">wxlua_lreg_derivedmethods_key</a>      = <span class="stringliteral">&quot;wxLua derived class methods&quot;</span>;
    62. 

  62. <a name="l00033"></a><a class="code" href="wxlstate_8cpp.html#a921299ed63513972e3bda3678fc835c0">00033</a> <span class="keyword">const</span> <span class="keywordtype">char</span>* <a class="code" href="wxlstate_8h.html#a921299ed63513972e3bda3678fc835c0">wxlua_lreg_wxluastate_key</a>          = <span class="stringliteral">&quot;wxLuaState&quot;</span>;
    63. 

  63. <a name="l00034"></a><a class="code" href="wxlstate_8cpp.html#a80a0d4c84529abdcf6b46237431832ce">00034</a> <span class="keyword">const</span> <span class="keywordtype">char</span>* <a class="code" href="wxlstate_8h.html#a80a0d4c84529abdcf6b46237431832ce">wxlua_lreg_wxluabindings_key</a>       = <span class="stringliteral">&quot;wxLuaBindings&quot;</span>;
    64. 

  64. <a name="l00035"></a><a class="code" href="wxlstate_8cpp.html#af255531a04d81a0d82556c0d1fe8e7e7">00035</a> <span class="keyword">const</span> <span class="keywordtype">char</span>* <a class="code" href="wxlstate_8h.html#af255531a04d81a0d82556c0d1fe8e7e7">wxlua_lreg_weakobjects_key</a>         = <span class="stringliteral">&quot;wxLua objects pushed&quot;</span>;
    65. 

  65. <a name="l00036"></a><a class="code" href="wxlstate_8cpp.html#a7ec5afec8a64a29e28fefec4a1105790">00036</a> <span class="keyword">const</span> <span class="keywordtype">char</span>* <a class="code" href="wxlstate_8h.html#a7ec5afec8a64a29e28fefec4a1105790">wxlua_lreg_gcobjects_key</a>           = <span class="stringliteral">&quot;wxLua gc objects to delete&quot;</span>;
    66. 

  66. <a name="l00037"></a><a class="code" href="wxlstate_8cpp.html#a034985fb7df51670c3b6a024329496fa">00037</a> <span class="keyword">const</span> <span class="keywordtype">char</span>* <a class="code" href="wxlstate_8h.html#a034985fb7df51670c3b6a024329496fa">wxlua_lreg_evtcallbacks_key</a>        = <span class="stringliteral">&quot;wxLuaEventCallbacks&quot;</span>;
    67. 

  67. <a name="l00038"></a><a class="code" href="wxlstate_8cpp.html#ae13b14073477671929c41823f198c33d">00038</a> <span class="keyword">const</span> <span class="keywordtype">char</span>* <a class="code" href="wxlstate_8h.html#ae13b14073477671929c41823f198c33d">wxlua_lreg_windestroycallbacks_key</a> = <span class="stringliteral">&quot;wxLuaWinDestoyCallbacks&quot;</span>;
    68. 

  68. <a name="l00039"></a><a class="code" href="wxlstate_8cpp.html#aab2351a78a8949184e1910cc1f9e7463">00039</a> <span class="keyword">const</span> <span class="keywordtype">char</span>* <a class="code" href="wxlstate_8h.html#aab2351a78a8949184e1910cc1f9e7463">wxlua_lreg_topwindows_key</a>          = <span class="stringliteral">&quot;wxLua top level wxWindows&quot;</span>;
    69. 

  69. <a name="l00040"></a><a class="code" href="wxlstate_8cpp.html#a91d0a86787b3a1de5921590ce6a0b3e8">00040</a> <span class="keyword">const</span> <span class="keywordtype">char</span>* <a class="code" href="wxlstate_8h.html#a91d0a86787b3a1de5921590ce6a0b3e8">wxlua_lreg_callbaseclassfunc_key</a>   = <span class="stringliteral">&quot;wxLua CallBaseClassFunc&quot;</span>;
    70. 

  70. <a name="l00041"></a><a class="code" href="wxlstate_8cpp.html#af24ccc441c899b3028cfc5d4099c739a">00041</a> <span class="keyword">const</span> <span class="keywordtype">char</span>* <a class="code" href="wxlstate_8h.html#af24ccc441c899b3028cfc5d4099c739a">wxlua_lreg_wxeventtype_key</a>         = <span class="stringliteral">&quot;wxLua wxEventType&quot;</span>;
    71. 

  71. <a name="l00042"></a><a class="code" href="wxlstate_8cpp.html#aba1ad42faf08e4b50bca48b5ba9d8ece">00042</a> <span class="keyword">const</span> <span class="keywordtype">char</span>* <a class="code" href="wxlstate_8h.html#aba1ad42faf08e4b50bca48b5ba9d8ece">wxlua_lreg_wxluastatedata_key</a>      = <span class="stringliteral">&quot;wxLuaStateData&quot;</span>;
    72. 

  72. <a name="l00043"></a><a class="code" href="wxlstate_8cpp.html#ab84cb2515893ab069d7d165208e68aad">00043</a> <span class="keyword">const</span> <span class="keywordtype">char</span>* <a class="code" href="wxlstate_8h.html#ab84cb2515893ab069d7d165208e68aad">wxlua_lreg_regtable_key</a>            = <span class="stringliteral">&quot;wxLua LUA_REGISTRYINDEX tables&quot;</span>;
    73. 

  73. <a name="l00044"></a>00044 
    74. 

  74. <a name="l00045"></a><a class="code" href="wxlstate_8cpp.html#a663c0f4ffbb1923edf3055b4c8c81ff9">00045</a> <span class="keyword">const</span> <span class="keywordtype">char</span>* <a class="code" href="wxlstate_8h.html#a663c0f4ffbb1923edf3055b4c8c81ff9">wxlua_metatable_type_key</a>           = <span class="stringliteral">&quot;wxLua metatable class type&quot;</span>;
    75. 

  75. <a name="l00046"></a><a class="code" href="wxlstate_8cpp.html#a8719cfeea23ebd1cb309de8296777da6">00046</a> <span class="keyword">const</span> <span class="keywordtype">char</span>* <a class="code" href="wxlstate_8h.html#a8719cfeea23ebd1cb309de8296777da6">wxlua_metatable_wxluabindclass_key</a> = <span class="stringliteral">&quot;wxLua metatable wxLuaBindClass&quot;</span>;
    76. 

  76. <a name="l00047"></a>00047 
    77. 

  77. <a name="l00048"></a>00048 <a class="code" href="classwxLuaState.html">wxLuaState</a> <a class="code" href="wxlstate_8h.html#aef06b6591011cd68b9e370d5e702d255">wxNullLuaState</a>(<span class="keyword">false</span>);
    78. 

  78. <a name="l00049"></a>00049 
    79. 

  79. <a name="l00050"></a>00050 <span class="keywordtype">int</span> LUACALL <a class="code" href="wxlstate_8cpp.html#ab03a3095ab5d0f4a427b4c5b10aa4e5c">luaopen_bit</a>(lua_State *L); <span class="comment">// implemented at bottom of file</span>
    80. 

  80. <a name="l00051"></a>00051 
    81. 

  81. <a name="l00052"></a>00052 <span class="comment">// ----------------------------------------------------------------------------</span>
    82. 

  82. <a name="l00053"></a>00053 <span class="comment">// C functions for Lua used in wxLuaState</span>
    83. 

  83. <a name="l00054"></a>00054 <span class="comment">// ----------------------------------------------------------------------------</span>
    84. 

  84. <a name="l00055"></a>00055 
    85. 

  85. <a name="l00056"></a>00056 <span class="comment">// The print function that we push into Lua replacing &quot;print(...)&quot;</span>
    86. 

  86. <a name="l00057"></a>00057 <span class="comment">// to generate wxLuaEvent(wxEVT_LUA_PRINT, ...)</span>
    87. 

  87. <a name="l00058"></a>00058 <span class="comment">// Code copied from Lua&#39;s luaB_print() function in lbaselib.c</span>
    88. 

  88. <a name="l00059"></a><a class="code" href="wxlstate_8cpp.html#a7c982cbdf126f61b0868fe40baf150c4">00059</a> <span class="keywordtype">int</span> LUACALL <a class="code" href="wxlstate_8cpp.html#a7c982cbdf126f61b0868fe40baf150c4">wxlua_printFunction</a>( lua_State *L )
    89. 

  89. <a name="l00060"></a>00060 {
    90. 

  90. <a name="l00061"></a>00061     <a class="code" href="classwxLuaState.html">wxLuaState</a> wxlState(L); <span class="comment">// doesn&#39;t have to be ok</span>
    91. 

  91. <a name="l00062"></a>00062 
    92. 

  92. <a name="l00063"></a>00063     wxString msg;
    93. 

  93. <a name="l00064"></a>00064     <span class="keywordtype">int</span> i, n = lua_gettop(L);
    94. 

  94. <a name="l00065"></a>00065 
    95. 

  95. <a name="l00066"></a>00066     <span class="comment">// Use the Lua tostring() function to print them as Lua would</span>
    96. 

  96. <a name="l00067"></a>00067     lua_getglobal(L, <span class="stringliteral">&quot;tostring&quot;</span>);
    97. 

  97. <a name="l00068"></a>00068 
    98. 

  98. <a name="l00069"></a>00069     <span class="keywordflow">if</span> (!lua_isfunction(L, -1))
    99. 

  99. <a name="l00070"></a>00070     {
    100. 

  100. <a name="l00071"></a>00071         <span class="comment">// This code is also used in wxledit.cpp, wxLuaShell::RunString()</span>
    101. 

  101. <a name="l00072"></a>00072         msg = wxT(<span class="stringliteral">&quot;wxLua ERROR: Unable to print() without the tostring() function. Did you remove it?&quot;</span>);
    102. 

  102. <a name="l00073"></a>00073         lua_pop(L, 1);  <span class="comment">// pop the nil or whatever replaced tostring()</span>
    103. 

  103. <a name="l00074"></a>00074         n = 0;          <span class="comment">// don&#39;t let for loop run</span>
    104. 

  104. <a name="l00075"></a>00075     }
    105. 

  105. <a name="l00076"></a>00076 
    106. 

  106. <a name="l00077"></a>00077     <span class="keywordflow">for</span> (i = 1; i &lt;= n; ++i)
    107. 

  107. <a name="l00078"></a>00078     {
    108. 

  108. <a name="l00079"></a>00079         <span class="keywordflow">if</span> (i &gt; 1) msg.Append(wxT(<span class="stringliteral">&quot;\t&quot;</span>)); <span class="comment">// Lua uses a tab too in luaB_print</span>
    109. 

  109. <a name="l00080"></a>00080 
    110. 

  110. <a name="l00081"></a>00081         <span class="keyword">const</span> <span class="keywordtype">char</span> *s;
    111. 

  111. <a name="l00082"></a>00082         lua_pushvalue(L, -1);       <span class="comment">/* function to be called */</span>
    112. 

  112. <a name="l00083"></a>00083         lua_pushvalue(L, i);        <span class="comment">/* value to print */</span>
    113. 

  113. <a name="l00084"></a>00084         lua_call(L, 1, 1);
    114. 

  114. <a name="l00085"></a>00085         s = lua_tostring(L, -1);    <span class="comment">/* get result */</span>
    115. 

  115. <a name="l00086"></a>00086         <span class="keywordflow">if</span> (s == NULL)
    116. 

  116. <a name="l00087"></a>00087         {
    117. 

  117. <a name="l00088"></a>00088             <span class="comment">// FIXME use wxlua_error here? right now wxlua_error doesn&#39;t do anything special - JL</span>
    118. 

  118. <a name="l00089"></a>00089             <span class="keywordflow">return</span> luaL_error(L, LUA_QL(<span class="stringliteral">&quot;tostring&quot;</span>) <span class="stringliteral">&quot; must return a string to &quot;</span>
    119. 

  119. <a name="l00090"></a>00090                               LUA_QL(<span class="stringliteral">&quot;print&quot;</span>));
    120. 

  120. <a name="l00091"></a>00091         }
    121. 

  121. <a name="l00092"></a>00092         msg += <a class="code" href="wxlstate_8h.html#aaa3dbc7e667edd1e7409725fe338f4e8">lua2wx</a>(s);
    122. 

  122. <a name="l00093"></a>00093         lua_pop(L, 1);  <span class="comment">/* pop result */</span>
    123. 

  123. <a name="l00094"></a>00094     }
    124. 

  124. <a name="l00095"></a>00095 
    125. 

  125. <a name="l00096"></a>00096     <span class="keywordflow">if</span> (!msg.IsEmpty() &amp;&amp; wxlState.<a class="code" href="classwxLuaState.html#a0a2d167b9d6d1259066d9aa771ad075e">Ok</a>())
    126. 

  126. <a name="l00097"></a>00097     {
    127. 

  127. <a name="l00098"></a>00098         <a class="code" href="classwxLuaEvent.html">wxLuaEvent</a> event(wxEVT_LUA_PRINT, wxlState.<a class="code" href="classwxLuaState.html#a92715872ca9f5f4b6e77344410963350">GetId</a>(), wxlState);
    128. 

  128. <a name="l00099"></a>00099         <span class="keyword">event</span>.SetString(msg);
    129. 

  129. <a name="l00100"></a>00100         wxlState.<a class="code" href="classwxLuaState.html#a1f0e0a065e8c3ea25c0ebe5c7258f7ae">SendEvent</a>(event);
    130. 

  130. <a name="l00101"></a>00101     }
    131. 

  131. <a name="l00102"></a>00102     <span class="keywordflow">else</span> <span class="keywordflow">if</span> (!msg.IsEmpty())
    132. 

  132. <a name="l00103"></a>00103         wxPrintf(wxT(<span class="stringliteral">&quot;%s\n&quot;</span>), msg.c_str()); <span class="comment">// Lua puts a \n too</span>
    133. 

  133. <a name="l00104"></a>00104 
    134. 

  134. <a name="l00105"></a>00105     <span class="keywordflow">return</span> 0; <span class="comment">// no items put onto stack</span>
    135. 

  135. <a name="l00106"></a>00106 }
    136. 

  136. <a name="l00107"></a>00107 
    137. 

  137. <a name="l00108"></a><a class="code" href="wxlstate_8cpp.html#a9eab35a72e3a0d8e1a669fb831a5272d">00108</a> <span class="keywordtype">void</span> LUACALL <a class="code" href="wxlstate_8cpp.html#a9eab35a72e3a0d8e1a669fb831a5272d">wxlua_debugHookFunction</a>(lua_State *L, lua_Debug *LDebug)
    138. 

  138. <a name="l00109"></a>00109 {
    139. 

  139. <a name="l00110"></a>00110     <span class="comment">// NULL when shutting down.</span>
    140. 

  140. <a name="l00111"></a>00111     <a class="code" href="classwxLuaStateData.html">wxLuaStateData</a>* wxlStateData = <a class="code" href="wxlstate_8h.html#a4c7701b4b056e2f84f380be559bb2482">wxlua_getwxluastatedata</a>(L);
    141. 

  141. <a name="l00112"></a>00112     <span class="keywordflow">if</span> (!wxlStateData) <span class="keywordflow">return</span>;
    142. 

  142. <a name="l00113"></a>00113 
    143. 

  143. <a name="l00114"></a>00114     <span class="comment">// FIXME - for select event types we don&#39;t want to do anything</span>
    144. 

  144. <a name="l00115"></a>00115     wxEventType evtType = <a class="code" href="wxlstate_8h.html#a5442b3e5a2f8dca8fb920c00279385ac">wxlua_getwxeventtype</a>(L);
    145. 

  145. <a name="l00116"></a>00116     <span class="keywordflow">if</span> ((evtType != wxEVT_NULL))
    146. 

  146. <a name="l00117"></a>00117         <span class="comment">//(evtType == wxEVT_IDLE) &amp;&amp; (evtType == wxEVT_PAINT) &amp;&amp;</span>
    147. 

  147. <a name="l00118"></a>00118         <span class="comment">//(evtType == wxEVT_DESTROY) &amp;&amp; (evtType == wxEVT_CLOSE_WINDOW))</span>
    148. 

  148. <a name="l00119"></a>00119         <span class="keywordflow">return</span>;
    149. 

  149. <a name="l00120"></a>00120 
    150. 

  150. <a name="l00121"></a>00121     <span class="comment">// they want to break the program, restore old debug hook, then error out</span>
    151. 

  151. <a name="l00122"></a>00122     <span class="keywordflow">if</span> (wxlStateData-&gt;<a class="code" href="classwxLuaStateData.html#abb85e04d6c6dd5a5b31ec55c3c3fdd8f">m_debug_hook_break</a>)
    152. 

  152. <a name="l00123"></a>00123     {
    153. 

  153. <a name="l00124"></a>00124         <span class="comment">// It&#39;s ok that we get the wxLuaState here since we&#39;re stopping anyway.</span>
    154. 

  154. <a name="l00125"></a>00125         <a class="code" href="classwxLuaState.html">wxLuaState</a> wxlState(L);
    155. 

  155. <a name="l00126"></a>00126 
    156. 

  156. <a name="l00127"></a>00127         <span class="comment">// restore hook to previous state</span>
    157. 

  157. <a name="l00128"></a>00128         wxlState.<a class="code" href="classwxLuaState.html#a61b2c790f1b50df9c8b41ef6cc8e58e9">ClearDebugHookBreak</a>();
    158. 

  158. <a name="l00129"></a>00129         <a class="code" href="wxlstate_8h.html#a1abe07e896f1e813fc28da0e0d92961a">wxlua_error</a>(L, wxlStateData-&gt;<a class="code" href="classwxLuaStateData.html#a375859ee7c4407fb3c5588b39705de2d">m_debug_hook_break_msg</a>);
    159. 

  159. <a name="l00130"></a>00130         <span class="keywordflow">return</span>;
    160. 

  160. <a name="l00131"></a>00131     }
    161. 

  161. <a name="l00132"></a>00132 
    162. 

  162. <a name="l00133"></a>00133     <span class="comment">// Assume they&#39;ve set the wxEvtHandler, ok if not, but it wouldn&#39;t make sense</span>
    163. 

  163. <a name="l00134"></a>00134     <span class="comment">// We use wxLuaState::SendEvent() because it sets wxEvent::SetEventObject() for us.</span>
    164. 

  164. <a name="l00135"></a>00135     <span class="keywordflow">if</span> (wxlStateData-&gt;<a class="code" href="classwxLuaStateData.html#adee2d0bdd61585268fc43c18bd0d1116">m_lua_debug_hook_send_evt</a>)
    165. 

  165. <a name="l00136"></a>00136     {
    166. 

  166. <a name="l00137"></a>00137         <a class="code" href="classwxLuaState.html">wxLuaState</a> wxlState(L);
    167. 

  167. <a name="l00138"></a>00138 
    168. 

  168. <a name="l00139"></a>00139         <span class="keywordtype">int</span> ret = 0;
    169. 

  169. <a name="l00140"></a>00140         ret = lua_getinfo(L, <span class="stringliteral">&quot;l&quot;</span>, LDebug); <span class="comment">// line (ldebug.currentline)</span>
    170. 

  170. <a name="l00141"></a>00141 
    171. 

  171. <a name="l00142"></a>00142         <a class="code" href="classwxLuaEvent.html">wxLuaEvent</a> event(wxEVT_LUA_DEBUG_HOOK, wxlState.<a class="code" href="classwxLuaState.html#a92715872ca9f5f4b6e77344410963350">GetId</a>(), wxlState);
    172. 

  172. <a name="l00143"></a>00143         <span class="keyword">event</span>.m_lua_Debug = LDebug;
    173. 

  173. <a name="l00144"></a>00144         <span class="keyword">event</span>.SetInt(LDebug-&gt;currentline);
    174. 

  174. <a name="l00145"></a>00145         wxlState.<a class="code" href="classwxLuaState.html#a1f0e0a065e8c3ea25c0ebe5c7258f7ae">SendEvent</a>( event );
    175. 

  175. <a name="l00146"></a>00146         <span class="keywordflow">if</span> (event.m_debug_hook_break)
    176. 

  176. <a name="l00147"></a>00147             wxlState.<a class="code" href="classwxLuaState.html#a4925fb35a1622f81fc9c5dc5820e27d8">wxlua_Error</a>(<span class="stringliteral">&quot;Lua interpreter stopped.&quot;</span>);
    177. 

  177. <a name="l00148"></a>00148     }
    178. 

  178. <a name="l00149"></a>00149 
    179. 

  179. <a name="l00150"></a>00150     <span class="comment">// Try to yield *after* sending event to allow C++ gui update</span>
    180. 

  180. <a name="l00151"></a>00151     <span class="keywordflow">if</span> (wxlStateData-&gt;<a class="code" href="classwxLuaStateData.html#a16aa632cff2de6c2ee2e2cab9a03b9a1">m_lua_debug_hook_yield</a> &gt; 0)
    181. 

  181. <a name="l00152"></a>00152     {
    182. 

  182. <a name="l00153"></a>00153         <span class="comment">// yield based on number of ms passed NOT every hook event</span>
    183. 

  183. <a name="l00154"></a>00154         <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> last_time = wxlStateData-&gt;<a class="code" href="classwxLuaStateData.html#aa7500e45a81ca35fc3fe1b66c2aa38fd">m_last_debug_hook_time</a>;
    184. 

  184. <a name="l00155"></a>00155         <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> cur_time  = wxGetLocalTimeMillis().GetLo();
    185. 

  185. <a name="l00156"></a>00156 
    186. 

  186. <a name="l00157"></a>00157         <span class="keywordflow">if</span> ((cur_time &gt; last_time + wxlStateData-&gt;<a class="code" href="classwxLuaStateData.html#a16aa632cff2de6c2ee2e2cab9a03b9a1">m_lua_debug_hook_yield</a>) ||
    187. 

  187. <a name="l00158"></a>00158             (cur_time &lt; last_time)) <span class="comment">// wrapped</span>
    188. 

  188. <a name="l00159"></a>00159         {
    189. 

  189. <a name="l00160"></a>00160             wxlStateData-&gt;<a class="code" href="classwxLuaStateData.html#aa7500e45a81ca35fc3fe1b66c2aa38fd">m_last_debug_hook_time</a> = cur_time;
    190. 

  190. <a name="l00161"></a>00161 
    191. 

  191. <a name="l00162"></a>00162             <span class="keywordtype">bool</span> painting = (evtType == wxEVT_PAINT);
    192. 

  192. <a name="l00163"></a>00163 
    193. 

  193. <a name="l00164"></a>00164 <span class="comment">/*</span>
    194. 

  194. <a name="l00165"></a>00165 <span class="comment">            wxLongToLongHashMap::iterator it;</span>
    195. 

  195. <a name="l00166"></a>00166 <span class="comment">            wxLongToLongHashMap* hashMap = &amp;wxlState.GetLuaStateRefData()-&gt;m_wxlStateData-&gt;m_trackedObjects;</span>
    196. 

  196. <a name="l00167"></a>00167 <span class="comment">            for (it = hashMap-&gt;begin(); it != hashMap-&gt;end(); ++it)</span>
    197. 

  197. <a name="l00168"></a>00168 <span class="comment">            {</span>
    198. 

  198. <a name="l00169"></a>00169 <span class="comment">                wxObject* obj = (wxObject*)it-&gt;second;</span>
    199. 

  199. <a name="l00170"></a>00170 <span class="comment">                if (obj &amp;&amp; wxDynamicCast(obj, wxPaintDC))</span>
    200. 

  200. <a name="l00171"></a>00171 <span class="comment">                {</span>
    201. 

  201. <a name="l00172"></a>00172 <span class="comment">                    painting = true;</span>
    202. 

  202. <a name="l00173"></a>00173 <span class="comment">                    break;</span>
    203. 

  203. <a name="l00174"></a>00174 <span class="comment">                }</span>
    204. 

  204. <a name="l00175"></a>00175 <span class="comment">            }</span>
    205. 

  205. <a name="l00176"></a>00176 <span class="comment">*/</span>
    206. 

  206. <a name="l00177"></a>00177 
    207. 

  207. <a name="l00178"></a>00178             <span class="keywordflow">if</span> (!painting)
    208. 

  208. <a name="l00179"></a>00179                 wxYield(); <span class="comment">//IfNeeded();</span>
    209. 

  209. <a name="l00180"></a>00180         }
    210. 

  210. <a name="l00181"></a>00181     }
    211. 

  211. <a name="l00182"></a>00182 }
    212. 

  212. <a name="l00183"></a>00183 
    213. 

  213. <a name="l00184"></a>00184 <span class="comment">// ----------------------------------------------------------------------------</span>
    214. 

  214. <a name="l00185"></a>00185 
    215. 

  215. <a name="l00186"></a><a class="code" href="wxlstate_8cpp.html#a7185a0c6fb640503f4921f15811ff4ac">00186</a> <span class="keywordtype">void</span> <a class="code" href="wxlstate_8h.html#a78fe2540c7e61145be1372073f0c37f7">wxlua_lreg_createtable</a>(lua_State* L, <span class="keywordtype">void</span>* lightuserdata_reg_key, <span class="keywordtype">int</span> narr, <span class="keywordtype">int</span> nrec)
    216. 

  216. <a name="l00187"></a>00187 {
    217. 

  217. <a name="l00188"></a>00188     <span class="comment">// clear the old ref to the table, even though it&#39;s weak kv</span>
    218. 

  218. <a name="l00189"></a>00189     <span class="comment">// it doesn&#39;t get cleared until the gc runs</span>
    219. 

  219. <a name="l00190"></a>00190     lua_pushlightuserdata(L, &amp;<a class="code" href="wxlstate_8h.html#ab84cb2515893ab069d7d165208e68aad">wxlua_lreg_regtable_key</a>); <span class="comment">// push key</span>
    220. 

  220. <a name="l00191"></a>00191     lua_rawget(L, LUA_REGISTRYINDEX);                   <span class="comment">// get table</span>
    221. 

  221. <a name="l00192"></a>00192       lua_pushlightuserdata(L, lightuserdata_reg_key);  <span class="comment">// push key</span>
    222. 

  222. <a name="l00193"></a>00193       lua_rawget(L, LUA_REGISTRYINDEX);                 <span class="comment">// get table or nil</span>
    223. 

  223. <a name="l00194"></a>00194       <span class="keywordflow">if</span> (lua_istable(L, -1))
    224. 

  224. <a name="l00195"></a>00195       {
    225. 

  225. <a name="l00196"></a>00196           lua_pushnil(L);                               <span class="comment">// push value</span>
    226. 

  226. <a name="l00197"></a>00197           lua_rawset(L, -3);                            <span class="comment">// clear t[key] = nil</span>
    227. 

  227. <a name="l00198"></a>00198           lua_pop(L, 1);                                <span class="comment">// pop wxlua_lreg_regtable_key table</span>
    228. 

  228. <a name="l00199"></a>00199       }
    229. 

  229. <a name="l00200"></a>00200       <span class="keywordflow">else</span>
    230. 

  230. <a name="l00201"></a>00201         lua_pop(L, 2); <span class="comment">// pop nil and wxlua_lreg_regtable_key table</span>
    231. 

  231. <a name="l00202"></a>00202 
    232. 

  232. <a name="l00203"></a>00203     <span class="comment">// Add new LUA_REGISTRYINDEX[&amp;wxlua_lreg_regtable_key][lightuserdata_reg_key table] = lightuserdata_reg_key</span>
    233. 

  233. <a name="l00204"></a>00204     lua_pushlightuserdata(L, lightuserdata_reg_key); <span class="comment">// push key</span>
    234. 

  234. <a name="l00205"></a>00205     lua_createtable(L, narr, nrec);                  <span class="comment">// push value</span>
    235. 

  235. <a name="l00206"></a>00206         lua_pushlightuserdata(L, &amp;<a class="code" href="wxlstate_8h.html#ab84cb2515893ab069d7d165208e68aad">wxlua_lreg_regtable_key</a>); <span class="comment">// push key</span>
    236. 

  236. <a name="l00207"></a>00207         lua_rawget(L, LUA_REGISTRYINDEX);                   <span class="comment">// get wxlua_lreg_regtable_key table</span>
    237. 

  237. <a name="l00208"></a>00208         lua_pushvalue(L, -2);    <span class="comment">// push key (copy of the new table)</span>
    238. 

  238. <a name="l00209"></a>00209         lua_pushvalue(L, -4);    <span class="comment">// push value (copy of lightuserdata key)</span>
    239. 

  239. <a name="l00210"></a>00210         lua_rawset(L, -3);       <span class="comment">// set t[key] = value; pops key and value</span>
    240. 

  240. <a name="l00211"></a>00211         lua_pop(L, 1);           <span class="comment">// pop wxlua_lreg_regtable_key table</span>
    241. 

  241. <a name="l00212"></a>00212     lua_rawset(L, LUA_REGISTRYINDEX); <span class="comment">// set the value</span>
    242. 

  242. <a name="l00213"></a>00213 }
    243. 

  243. <a name="l00214"></a>00214 
    244. 

  244. <a name="l00215"></a>00215 <span class="comment">// ----------------------------------------------------------------------------</span>
    245. 

  245. <a name="l00216"></a>00216 <span class="comment">// Lua helper functions</span>
    246. 

  246. <a name="l00217"></a>00217 <span class="comment">// ----------------------------------------------------------------------------</span>
    247. 

  247. <a name="l00218"></a>00218 
    248. 

  248. <a name="l00219"></a><a class="code" href="wxlstate_8cpp.html#ab2ae5dfea9cc867ed46ed094ce4e768f">00219</a> wxString <a class="code" href="wxlstate_8h.html#ab2ae5dfea9cc867ed46ed094ce4e768f">wxlua_LUA_ERR_msg</a>(<span class="keywordtype">int</span> LUA_ERRx)
    249. 

  249. <a name="l00220"></a>00220 {
    250. 

  250. <a name="l00221"></a>00221     <span class="keywordflow">switch</span> (LUA_ERRx)
    251. 

  251. <a name="l00222"></a>00222     {
    252. 

  252. <a name="l00223"></a>00223         <span class="keywordflow">case</span> 0             : <span class="keywordflow">return</span> wxEmptyString;
    253. 

  253. <a name="l00224"></a>00224         <span class="keywordflow">case</span> LUA_YIELD     : <span class="keywordflow">return</span> wxT(<span class="stringliteral">&quot;Lua: Thread is suspended&quot;</span>);
    254. 

  254. <a name="l00225"></a>00225         <span class="keywordflow">case</span> LUA_ERRRUN    : <span class="keywordflow">return</span> wxT(<span class="stringliteral">&quot;Lua: Error while running chunk&quot;</span>);
    255. 

  255. <a name="l00226"></a>00226         <span class="keywordflow">case</span> LUA_ERRSYNTAX : <span class="keywordflow">return</span> wxT(<span class="stringliteral">&quot;Lua: Syntax error during pre-compilation&quot;</span>);
    256. 

  256. <a name="l00227"></a>00227         <span class="keywordflow">case</span> LUA_ERRMEM    : <span class="keywordflow">return</span> wxT(<span class="stringliteral">&quot;Lua: Memory allocation error&quot;</span>);
    257. 

  257. <a name="l00228"></a>00228         <span class="keywordflow">case</span> LUA_ERRERR    : <span class="keywordflow">return</span> wxT(<span class="stringliteral">&quot;Lua: Generic error or an error occurred while running the error handler&quot;</span>);
    258. 

  258. <a name="l00229"></a>00229         <span class="keywordflow">case</span> LUA_ERRFILE   : <span class="keywordflow">return</span> wxT(<span class="stringliteral">&quot;Lua: Error occurred while opening file&quot;</span>);
    259. 

  259. <a name="l00230"></a>00230     }
    260. 

  260. <a name="l00231"></a>00231 
    261. 

  261. <a name="l00232"></a>00232     <span class="keywordflow">return</span> wxT(<span class="stringliteral">&quot;Lua: Unknown LUA_ERRx error value&quot;</span>);
    262. 

  262. <a name="l00233"></a>00233 }
    263. 

  263. <a name="l00234"></a>00234 
    264. 

  264. <a name="l00235"></a><a class="code" href="wxlstate_8cpp.html#a0c9eeb57ad65f8e174030f03af466331">00235</a> <span class="keywordtype">bool</span> <a class="code" href="wxlstate_8h.html#a34d4dc64c6615a3e7c4fea5f6fb5840f">wxlua_errorinfo</a>(lua_State* L, <span class="keywordtype">int</span> status, <span class="keywordtype">int</span> top, wxString* errorMsg_, <span class="keywordtype">int</span>* line_num_)
    265. 

  265. <a name="l00236"></a>00236 {
    266. 

  266. <a name="l00237"></a>00237     <span class="keywordflow">if</span> (status == 0)
    267. 

  267. <a name="l00238"></a>00238         <span class="keywordflow">return</span> <span class="keyword">false</span>;
    268. 

  268. <a name="l00239"></a>00239 
    269. 

  269. <a name="l00240"></a>00240     <span class="keywordtype">int</span> newtop = lua_gettop(L);
    270. 

  270. <a name="l00241"></a>00241 
    271. 

  271. <a name="l00242"></a>00242     wxString errorMsg = <a class="code" href="wxlstate_8h.html#ab2ae5dfea9cc867ed46ed094ce4e768f">wxlua_LUA_ERR_msg</a>(status);
    272. 

  272. <a name="l00243"></a>00243 
    273. 

  273. <a name="l00244"></a>00244     <span class="keywordflow">switch</span>(status)
    274. 

  274. <a name="l00245"></a>00245     {
    275. 

  275. <a name="l00246"></a>00246         <span class="keywordflow">case</span> LUA_ERRMEM:
    276. 

  276. <a name="l00247"></a>00247         <span class="keywordflow">case</span> LUA_ERRERR:
    277. 

  277. <a name="l00248"></a>00248         {
    278. 

  278. <a name="l00249"></a>00249             <span class="keywordflow">if</span> (newtop &gt; top)
    279. 

  279. <a name="l00250"></a>00250                 errorMsg += wxT(<span class="stringliteral">&quot;\n&quot;</span>);
    280. 

  280. <a name="l00251"></a>00251             <span class="keywordflow">break</span>;
    281. 

  281. <a name="l00252"></a>00252         }
    282. 

  282. <a name="l00253"></a>00253         <span class="keywordflow">case</span> LUA_ERRRUN:
    283. 

  283. <a name="l00254"></a>00254         <span class="keywordflow">case</span> LUA_ERRFILE:
    284. 

  284. <a name="l00255"></a>00255         <span class="keywordflow">case</span> LUA_ERRSYNTAX:
    285. 

  285. <a name="l00256"></a>00256         <span class="keywordflow">default</span>:
    286. 

  286. <a name="l00257"></a>00257         {
    287. 

  287. <a name="l00258"></a>00258             <span class="keywordflow">if</span> (newtop &gt; top)
    288. 

  288. <a name="l00259"></a>00259                 errorMsg += wxT(<span class="stringliteral">&quot;\n&quot;</span>) + <a class="code" href="wxlstate_8h.html#aaa3dbc7e667edd1e7409725fe338f4e8">lua2wx</a>(lua_tostring(L, -1));
    289. 

  289. <a name="l00260"></a>00260             <span class="keywordflow">break</span>;
    290. 

  290. <a name="l00261"></a>00261         }
    291. 

  291. <a name="l00262"></a>00262     }
    292. 

  292. <a name="l00263"></a>00263 
    293. 

  293. <a name="l00264"></a>00264     errorMsg += wxT(<span class="stringliteral">&quot;\n&quot;</span>);
    294. 

  294. <a name="l00265"></a>00265 
    295. 

  295. <a name="l00266"></a>00266     <span class="comment">// Why can&#39;t I fill a lua_Debug here? Try to get the line number</span>
    296. 

  296. <a name="l00267"></a>00267     <span class="comment">// by parsing the error message that looks like this, 3 is linenumber</span>
    297. 

  297. <a name="l00268"></a>00268     <span class="comment">// [string &quot;a = 1(&quot;]:3: unexpected symbol near `&lt;eof&gt;&#39;</span>
    298. 

  298. <a name="l00269"></a>00269     wxString lineStr = errorMsg;
    299. 

  299. <a name="l00270"></a>00270     <span class="keywordtype">long</span> line_num = -1;
    300. 

  300. <a name="l00271"></a>00271     <span class="keywordflow">while</span>(!lineStr.IsEmpty())
    301. 

  301. <a name="l00272"></a>00272     {
    302. 

  302. <a name="l00273"></a>00273         <span class="comment">// search through the str to find &#39;]:LONG:&#39; pattern</span>
    303. 

  303. <a name="l00274"></a>00274         lineStr = lineStr.AfterFirst(wxT(<span class="charliteral">&#39;]&#39;</span>));
    304. 

  304. <a name="l00275"></a>00275         <span class="keywordflow">if</span> ((lineStr.Length() &gt; 0) &amp;&amp; (lineStr.GetChar(0) == wxT(<span class="charliteral">&#39;:&#39;</span>)))
    305. 

  305. <a name="l00276"></a>00276         {
    306. 

  306. <a name="l00277"></a>00277             lineStr = lineStr.AfterFirst(wxT(<span class="charliteral">&#39;:&#39;</span>));
    307. 

  307. <a name="l00278"></a>00278             <span class="keywordflow">if</span> (lineStr.IsEmpty() || lineStr.BeforeFirst(wxT(<span class="charliteral">&#39;:&#39;</span>)).ToLong(&amp;line_num))
    308. 

  308. <a name="l00279"></a>00279                 <span class="keywordflow">break</span>;
    309. 

  309. <a name="l00280"></a>00280         }
    310. 

  310. <a name="l00281"></a>00281     }
    311. 

  311. <a name="l00282"></a>00282 
    312. 

  312. <a name="l00283"></a>00283     lua_settop(L, top); <span class="comment">// pops the message if any</span>
    313. 

  313. <a name="l00284"></a>00284 
    314. 

  314. <a name="l00285"></a>00285     <span class="keywordflow">if</span> (errorMsg_) *errorMsg_ = errorMsg;
    315. 

  315. <a name="l00286"></a>00286     <span class="keywordflow">if</span> (line_num_) *line_num_ = (int)line_num;
    316. 

  316. <a name="l00287"></a>00287 
    317. 

  317. <a name="l00288"></a>00288     <span class="keywordflow">return</span> <span class="keyword">true</span>;
    318. 

  318. <a name="l00289"></a>00289 }
    319. 

  319. <a name="l00290"></a>00290 
    320. 

  320. <a name="l00291"></a><a class="code" href="wxlstate_8cpp.html#a1abe07e896f1e813fc28da0e0d92961a">00291</a> <span class="keywordtype">void</span> LUACALL <a class="code" href="wxlstate_8h.html#a1abe07e896f1e813fc28da0e0d92961a">wxlua_error</a>(lua_State *L, <span class="keyword">const</span> <span class="keywordtype">char</span> *errorMsg)
    321. 

  321. <a name="l00292"></a>00292 {
    322. 

  322. <a name="l00293"></a>00293     <span class="comment">// Use luaL_error(L, s) and not &quot;lua_pushstring(L, s); lua_error(L)&quot; since</span>
    323. 

  323. <a name="l00294"></a>00294     <span class="comment">// luaL_error() provides the file and line number too.</span>
    324. 

  324. <a name="l00295"></a>00295     luaL_error(L, <span class="stringliteral">&quot;%s&quot;</span>, errorMsg);
    325. 

  325. <a name="l00296"></a>00296 }
    326. 

  326. <a name="l00297"></a>00297 
    327. 

  327. <a name="l00298"></a><a class="code" href="wxlstate_8cpp.html#aba05dfc5f8a48e264d7463a7c6fee965">00298</a> <span class="keywordtype">void</span> LUACALL <a class="code" href="wxlstate_8h.html#aba05dfc5f8a48e264d7463a7c6fee965">wxlua_argerror</a>(lua_State *L, <span class="keywordtype">int</span> stack_idx, <span class="keyword">const</span> wxString&amp; expectedType)
    328. 

  328. <a name="l00299"></a>00299 {
    329. 

  329. <a name="l00300"></a>00300     wxString argType = <a class="code" href="wxlstate_8h.html#acf6d708626f3c7194d1f2aebb7a73b6e">wxlua_luaL_typename</a>(L, stack_idx);
    330. 

  330. <a name="l00301"></a>00301 
    331. 

  331. <a name="l00302"></a>00302     wxString msg(wxString::Format(_(<span class="stringliteral">&quot;wxLua: Expected %s for parameter %d, but got a &#39;%s&#39;.&quot;</span>),
    332. 

  332. <a name="l00303"></a>00303                                     expectedType.c_str(), stack_idx, argType.c_str()));
    333. 

  333. <a name="l00304"></a>00304 
    334. 

  334. <a name="l00305"></a>00305     <a class="code" href="wxlstate_8h.html#a34376827e7b3466173127fba976217d0">wxlua_argerrormsg</a>(L, msg);
    335. 

  335. <a name="l00306"></a>00306 }
    336. 

  336. <a name="l00307"></a>00307 
    337. 

  337. <a name="l00308"></a><a class="code" href="wxlstate_8cpp.html#aa4db1ed30ef56e312dcf5e9cca75bcb2">00308</a> <span class="keywordtype">void</span> LUACALL <a class="code" href="wxlstate_8h.html#a34376827e7b3466173127fba976217d0">wxlua_argerrormsg</a>(lua_State *L, <span class="keyword">const</span> wxString&amp; msg_)
    338. 

  338. <a name="l00309"></a>00309 {
    339. 

  339. <a name="l00310"></a>00310     wxString funcArgs(wxT(<span class="stringliteral">&quot;\n&quot;</span>));
    340. 

  340. <a name="l00311"></a>00311     wxString argMsg  = <a class="code" href="wxlbind_8h.html#a15f78fa970b76c7963c3e11f90d988ca">wxlua_getLuaArgsMsg</a>(L, 1, lua_gettop(L));
    341. 

  341. <a name="l00312"></a>00312 
    342. 

  342. <a name="l00313"></a>00313     <a class="code" href="structwxLuaBindMethod.html">wxLuaBindMethod</a>* wxlMethod = (<a class="code" href="structwxLuaBindMethod.html">wxLuaBindMethod</a> *)lua_touserdata(L, lua_upvalueindex(1)); <span class="comment">// lightuserdata</span>
    343. 

  343. <a name="l00314"></a>00314     <span class="keywordflow">if</span> (wxlMethod != NULL)
    344. 

  344. <a name="l00315"></a>00315     {
    345. 

  345. <a name="l00316"></a>00316         <span class="comment">// Guarantee that this is a wxLuaBindMethod of ours so we don&#39;t crash.</span>
    346. 

  346. <a name="l00317"></a>00317         <span class="comment">// Since we&#39;re going to error out we don&#39;t have to be quick about it.</span>
    347. 

  347. <a name="l00318"></a>00318 
    348. 

  348. <a name="l00319"></a>00319         <span class="comment">// check if this method is part of a class</span>
    349. 

  349. <a name="l00320"></a>00320         <span class="keyword">const</span> <a class="code" href="structwxLuaBindClass.html">wxLuaBindClass</a>* wxlClass = <a class="code" href="classwxLuaBinding.html#a7ee5e4f66198a0ef9e8cc4c2a6d0318e">wxLuaBinding::FindBindClass</a>(wxlMethod);
    350. 

  350. <a name="l00321"></a>00321 
    351. 

  351. <a name="l00322"></a>00322         <span class="comment">// if not, check if it&#39;s a global C style function</span>
    352. 

  352. <a name="l00323"></a>00323         <a class="code" href="classwxLuaBinding.html">wxLuaBinding</a>* binding = NULL;
    353. 

  353. <a name="l00324"></a>00324         <span class="keywordflow">if</span> (wxlClass == NULL)
    354. 

  354. <a name="l00325"></a>00325             binding = <a class="code" href="classwxLuaBinding.html#a463d056fe9bcb54f0408a8ae523ba64e">wxLuaBinding::FindMethodBinding</a>(wxlMethod);
    355. 

  355. <a name="l00326"></a>00326 
    356. 

  356. <a name="l00327"></a>00327         <span class="keywordflow">if</span> ((wxlClass != NULL) || (binding != NULL))
    357. 

  357. <a name="l00328"></a>00328             funcArgs += <a class="code" href="wxlbind_8h.html#a0cf1f6600d0f80e2135c6788a4afc39f">wxlua_getBindMethodArgsMsg</a>(L, wxlMethod);
    358. 

  358. <a name="l00329"></a>00329     }
    359. 

  359. <a name="l00330"></a>00330 
    360. 

  360. <a name="l00331"></a>00331     wxString msg = msg_ + wxT(<span class="stringliteral">&quot;\nFunction called: &#39;&quot;</span>) + argMsg + wxT(<span class="stringliteral">&quot;&#39;&quot;</span>) + funcArgs;
    361. 

  361. <a name="l00332"></a>00332     <a class="code" href="wxlstate_8h.html#a1abe07e896f1e813fc28da0e0d92961a">wxlua_error</a>(L, msg);
    362. 

  362. <a name="l00333"></a>00333 }
    363. 

  363. <a name="l00334"></a>00334 
    364. 

  364. <a name="l00335"></a><a class="code" href="wxlstate_8cpp.html#adde66f46b163a0fc59e09904cf355792">00335</a> <span class="keywordtype">void</span>* LUACALL <a class="code" href="wxlstate_8h.html#ac5a0a65665274df59adbed667480e93e">wxlua_touserdata</a>(lua_State *L, <span class="keywordtype">int</span> stack_idx, <span class="keywordtype">bool</span> null_ptr <span class="comment">/*= false*/</span>)
    365. 

  365. <a name="l00336"></a>00336 {
    366. 

  366. <a name="l00337"></a>00337     <span class="keywordtype">void</span> *pdata = NULL;
    367. 

  367. <a name="l00338"></a>00338     <span class="keywordtype">void</span> **ptr = (<span class="keywordtype">void</span> **)lua_touserdata(L, stack_idx);
    368. 

  368. <a name="l00339"></a>00339 
    369. 

  369. <a name="l00340"></a>00340     <span class="keywordflow">if</span> (ptr != NULL)
    370. 

  370. <a name="l00341"></a>00341     {
    371. 

  371. <a name="l00342"></a>00342         pdata = *ptr;       <span class="comment">// get the pointer the userdata holds</span>
    372. 

  372. <a name="l00343"></a>00343         <span class="keywordflow">if</span> (null_ptr)       <span class="comment">// NULL ptr so Lua won&#39;t try to gc it</span>
    373. 

  373. <a name="l00344"></a>00344             *ptr = NULL;
    374. 

  374. <a name="l00345"></a>00345     }
    375. 

  375. <a name="l00346"></a>00346 
    376. 

  376. <a name="l00347"></a>00347     <span class="keywordflow">return</span> pdata;
    377. 

  377. <a name="l00348"></a>00348 }
    378. 

  378. <a name="l00349"></a>00349 
    379. 

  379. <a name="l00350"></a>00350 <span class="comment">// ----------------------------------------------------------------------------</span>
    380. 

  380. <a name="l00351"></a>00351 <span class="comment">// wxluaR_XXX - functions operate on tables in Lua&#39;s LUA_REGISTRYINDEX</span>
    381. 

  381. <a name="l00352"></a>00352 <span class="comment">// ----------------------------------------------------------------------------</span>
    382. 

  382. <a name="l00353"></a>00353 
    383. 

  383. <a name="l00354"></a><a class="code" href="wxlstate_8cpp.html#a08525c218f0a90e660c0f816906da29e">00354</a> <span class="preprocessor">#define ABS_LUA_STKIDX(n, added_items) ((n) &gt; 0 ? (n) : (n)-(added_items))</span>
    384. 

  384. <a name="l00355"></a>00355 <span class="preprocessor"></span>
    385. 

  385. <a name="l00356"></a>00356 <span class="comment">// Note about luaL_ref() and luaL_unref().</span>
    386. 

  386. <a name="l00357"></a>00357 <span class="comment">// ref creates integer numbers from 1 to ...</span>
    387. 

  387. <a name="l00358"></a>00358 <span class="comment">// unref uses t[0] to hold the last unused reference and when you call unref</span>
    388. 

  388. <a name="l00359"></a>00359 <span class="comment">// again the next unused ref points back to the first and t[0] points to the</span>
    389. 

  389. <a name="l00360"></a>00360 <span class="comment">// last unrefed key.</span>
    390. 

  390. <a name="l00361"></a>00361 <span class="comment">// eg. create 5 refs, get refs 1,2,3,4,5, then call unref on 3 then 4 then</span>
    391. 

  391. <a name="l00362"></a>00362 <span class="comment">//     call ref 3 times and the new references will be 4, 3, 6</span>
    392. 

  392. <a name="l00363"></a>00363 
    393. 

  393. <a name="l00364"></a><a class="code" href="wxlstate_8cpp.html#a0879809a008c75f8b26fb9ee326efdbd">00364</a> <span class="keywordtype">int</span> <a class="code" href="wxlstate_8h.html#acbf0a32ad4b828026bd7f643557646d0">wxluaR_ref</a>(lua_State* L, <span class="keywordtype">int</span> stack_idx, <span class="keywordtype">void</span>* lightuserdata_reg_key)
    394. 

  394. <a name="l00365"></a>00365 {
    395. 

  395. <a name="l00366"></a>00366     <span class="comment">// nothing on stack to insert and don&#39;t bother inserting nil</span>
    396. 

  396. <a name="l00367"></a>00367     <span class="keywordflow">if</span> (lua_isnoneornil(L, stack_idx))
    397. 

  397. <a name="l00368"></a>00368         <span class="keywordflow">return</span> LUA_REFNIL;
    398. 

  398. <a name="l00369"></a>00369 
    399. 

  399. <a name="l00370"></a>00370     lua_pushlightuserdata(L, lightuserdata_reg_key);    <span class="comment">// push key</span>
    400. 

  400. <a name="l00371"></a>00371     lua_rawget(L, LUA_REGISTRYINDEX);                   <span class="comment">// pop key, push value (table)</span>
    401. 

  401. <a name="l00372"></a>00372 
    402. 

  402. <a name="l00373"></a>00373     lua_pushvalue(L, <a class="code" href="wxlstate_8cpp.html#a08525c218f0a90e660c0f816906da29e">ABS_LUA_STKIDX</a>(stack_idx,1));      <span class="comment">// push value to store</span>
    403. 

  403. <a name="l00374"></a>00374 
    404. 

  404. <a name="l00375"></a>00375     <span class="keywordtype">int</span> ref_idx = luaL_ref(L, -2);                      <span class="comment">// t[ref_idx] = value; pops value</span>
    405. 

  405. <a name="l00376"></a>00376 
    406. 

  406. <a name="l00377"></a>00377     <span class="comment">// We also store t[value] = table_idx for this table for faster lookup</span>
    407. 

  407. <a name="l00378"></a>00378     <span class="keywordflow">if</span> (lightuserdata_reg_key == &amp;<a class="code" href="wxlstate_8h.html#a30c2d5556a4a278368b48fe0b7bb3fda">wxlua_lreg_debug_refs_key</a>)
    408. 

  408. <a name="l00379"></a>00379     {
    409. 

  409. <a name="l00380"></a>00380         lua_pushvalue(L, <a class="code" href="wxlstate_8cpp.html#a08525c218f0a90e660c0f816906da29e">ABS_LUA_STKIDX</a>(stack_idx,1));  <span class="comment">// push key</span>
    410. 

  410. <a name="l00381"></a>00381         lua_pushnumber(L, ref_idx);                     <span class="comment">// push value</span>
    411. 

  411. <a name="l00382"></a>00382         lua_rawset(L, -3);                              <span class="comment">// set t[key] = value; pops key and value</span>
    412. 

  412. <a name="l00383"></a>00383     }
    413. 

  413. <a name="l00384"></a>00384 
    414. 

  414. <a name="l00385"></a>00385     lua_pop(L, 1);                                      <span class="comment">// pop table</span>
    415. 

  415. <a name="l00386"></a>00386 
    416. 

  416. <a name="l00387"></a>00387     <span class="keywordflow">return</span> ref_idx;
    417. 

  417. <a name="l00388"></a>00388 }
    418. 

  418. <a name="l00389"></a>00389 
    419. 

  419. <a name="l00390"></a><a class="code" href="wxlstate_8cpp.html#a78110a111c2f4e0a94231d344611ce20">00390</a> <span class="keywordtype">bool</span> <a class="code" href="wxlstate_8h.html#a0578d177f35b4dd05177067425410009">wxluaR_unref</a>(lua_State* L, <span class="keywordtype">int</span> ref_idx, <span class="keywordtype">void</span>* lightuserdata_reg_key)
    420. 

  420. <a name="l00391"></a>00391 {
    421. 

  421. <a name="l00392"></a>00392     <span class="keywordflow">if</span> (ref_idx == LUA_REFNIL)                       <span class="comment">// nothing to remove</span>
    422. 

  422. <a name="l00393"></a>00393         <span class="keywordflow">return</span> <span class="keyword">false</span>;
    423. 

  423. <a name="l00394"></a>00394 
    424. 

  424. <a name="l00395"></a>00395     lua_pushlightuserdata(L, lightuserdata_reg_key); <span class="comment">// push key</span>
    425. 

  425. <a name="l00396"></a>00396     lua_rawget(L, LUA_REGISTRYINDEX);                <span class="comment">// pop key, push value (table)</span>
    426. 

  426. <a name="l00397"></a>00397 
    427. 

  427. <a name="l00398"></a>00398     <span class="comment">// Also remove the t[value] = table_idx for this table</span>
    428. 

  428. <a name="l00399"></a>00399     <span class="keywordflow">if</span> (lightuserdata_reg_key == &amp;<a class="code" href="wxlstate_8h.html#a30c2d5556a4a278368b48fe0b7bb3fda">wxlua_lreg_debug_refs_key</a>)
    429. 

  429. <a name="l00400"></a>00400     {
    430. 

  430. <a name="l00401"></a>00401         lua_pushnumber(L, ref_idx);   <span class="comment">// push key</span>
    431. 

  431. <a name="l00402"></a>00402         lua_rawget(L, -2);            <span class="comment">// get t[key] = value; pop key, push value;</span>
    432. 

  432. <a name="l00403"></a>00403 
    433. 

  433. <a name="l00404"></a>00404         lua_pushnil(L);
    434. 

  434. <a name="l00405"></a>00405         lua_rawset(L, -3);            <span class="comment">// t[value] = nil; pops key and value</span>
    435. 

  435. <a name="l00406"></a>00406     }
    436. 

  436. <a name="l00407"></a>00407 
    437. 

  437. <a name="l00408"></a>00408     luaL_unref(L, -1, ref_idx);       <span class="comment">// remove key and value in refs table</span>
    438. 

  438. <a name="l00409"></a>00409                                       <span class="comment">// note: this key will be used for the next wxluaR_ref()</span>
    439. 

  439. <a name="l00410"></a>00410 
    440. 

  440. <a name="l00411"></a>00411     lua_pop(L, 1);                    <span class="comment">// pop table</span>
    441. 

  441. <a name="l00412"></a>00412 
    442. 

  442. <a name="l00413"></a>00413     <span class="keywordflow">return</span> <span class="keyword">true</span>;
    443. 

  443. <a name="l00414"></a>00414 }
    444. 

  444. <a name="l00415"></a>00415 
    445. 

  445. <a name="l00416"></a><a class="code" href="wxlstate_8cpp.html#a72d9705f9b5d46e0183888f4846d8e82">00416</a> <span class="keywordtype">bool</span> LUACALL <a class="code" href="wxlstate_8h.html#ae7108b396d79179f517a7dc478c2cb43">wxluaR_getref</a>(lua_State *L, <span class="keywordtype">int</span> ref_idx, <span class="keywordtype">void</span>* lightuserdata_reg_key)
    446. 

  446. <a name="l00417"></a>00417 {
    447. 

  447. <a name="l00418"></a>00418     <span class="keywordflow">if</span> (ref_idx == LUA_REFNIL)          <span class="comment">// nothing to get</span>
    448. 

  448. <a name="l00419"></a>00419         <span class="keywordflow">return</span> <span class="keyword">false</span>;
    449. 

  449. <a name="l00420"></a>00420 
    450. 

  450. <a name="l00421"></a>00421     lua_pushlightuserdata(L, lightuserdata_reg_key); <span class="comment">// push key</span>
    451. 

  451. <a name="l00422"></a>00422     lua_rawget(L, LUA_REGISTRYINDEX);                <span class="comment">// pop key, push value (table)</span>
    452. 

  452. <a name="l00423"></a>00423 
    453. 

  453. <a name="l00424"></a>00424     lua_rawgeti(L, -1, ref_idx);        <span class="comment">// get t[ref_idx] = value; push value</span>
    454. 

  454. <a name="l00425"></a>00425 
    455. 

  455. <a name="l00426"></a>00426     <span class="keywordflow">if</span> (lua_isnil(L, -1))               <span class="comment">// not a valid table key</span>
    456. 

  456. <a name="l00427"></a>00427     {
    457. 

  457. <a name="l00428"></a>00428         lua_pop(L, 2);                  <span class="comment">// pop nil and table</span>
    458. 

  458. <a name="l00429"></a>00429…
    459.

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