namespace LuaInterface
{
using System;
using System.Runtime.InteropServices;
using System.Reflection;
using System.Collections;
using System.Text;
using System.Security;
/*
* Lua types for the API, returned by lua_type function
*/
public enum LuaTypes
{
LUA_TNONE=-1,
LUA_TNIL=0,
LUA_TNUMBER=3,
LUA_TSTRING=4,
LUA_TBOOLEAN=1,
LUA_TTABLE=5,
LUA_TFUNCTION=6,
LUA_TUSERDATA=7,
LUA_TLIGHTUSERDATA=2
}
// steffenj: BEGIN lua garbage collector options
/*
* Lua Garbage Collector options (param "what")
*/
public enum LuaGCOptions
{
LUA_GCSTOP = 0,
LUA_GCRESTART = 1,
LUA_GCCOLLECT = 2,
LUA_GCCOUNT = 3,
LUA_GCCOUNTB = 4,
LUA_GCSTEP = 5,
LUA_GCSETPAUSE = 6,
LUA_GCSETSTEPMUL = 7,
}
/*
sealed class LuaGCOptions
{
public static int LUA_GCSTOP = 0;
public static int LUA_GCRESTART = 1;
public static int LUA_GCCOLLECT = 2;
public static int LUA_GCCOUNT = 3;
public static int LUA_GCCOUNTB = 4;
public static int LUA_GCSTEP = 5;
public static int LUA_GCSETPAUSE = 6;
public static int LUA_GCSETSTEPMUL = 7;
};
*/
// steffenj: END lua garbage collector options
/*
* Special stack indexes
*/
sealed class LuaIndexes
{
public static int LUA_REGISTRYINDEX=-10000;
public static int LUA_ENVIRONINDEX=-10001; // steffenj: added environindex
public static int LUA_GLOBALSINDEX=-10002; // steffenj: globalsindex previously was -10001
}
/*
* Structure used by the chunk reader
*/
[ StructLayout( LayoutKind.Sequential )]
public struct ReaderInfo
{
public String chunkData;
public bool finished;
}
/*
* Delegate for functions passed to Lua as function pointers
*/
public delegate int LuaCSFunction(IntPtr luaState);
/*
* Delegate for chunk readers used with lua_load
*/
public delegate string LuaChunkReader(IntPtr luaState,ref ReaderInfo data,ref uint size);
///
/// Used to handle Lua panics
///
///
///
public delegate int LuaFunctionCallback(IntPtr luaState);
/*
* P/Invoke wrapper of the Lua API
*
* Author: Fabio Mascarenhas
* Version: 1.0
*
* // steffenj: noteable changes in the LuaDLL API:
* - luaopen_* functions are gone
* (however Lua class constructor already calls luaL_openlibs now, so just remove these calls)
* - deprecated functions: lua_open, lua_strlen, lua_dostring
* (they still work but may be removed with next Lua version)
*
* list of functions of the Lua 5.1.1 C API that are not in LuaDLL
* i thought this may come in handy for the next Lua version upgrade and for anyone to see
* what the differences are in the APIs (C API vs LuaDLL API)
lua_concat (use System.String concatenation or similar)
lua_cpcall (no point in calling C functions)
lua_dump (would write to unmanaged memory via lua_Writer)
lua_getallocf (no C functions/pointers)
lua_isthread (no threads)
lua_newstate (use luaL_newstate)
lua_newthread (no threads)
lua_pushcclosure (no C functions/pointers)
lua_pushcfunction (no C functions/pointers)
lua_pushfstring (use lua_pushstring)
lua_pushthread (no threads)
lua_pushvfstring (use lua_pushstring)
lua_register (all libs already opened, use require in scripts for external libs)
lua_resume (no threads)
lua_setallocf (no C functions/pointers)
lua_status (no threads)
lua_tointeger (use System.Convert)
lua_tolstring (use lua_tostring)
lua_topointer (no C functions/pointers)
lua_tothread (no threads)
lua_xmove (no threads)
lua_yield (no threads)
luaL_add* (use System.String concatenation or similar)
luaL_argcheck (function argument checking unnecessary)
luaL_argerror (function argument checking unnecessary)
luaL_buffinit (use System.String concatenation or similar)
luaL_checkany (function argument checking unnecessary)
luaL_checkint (function argument checking unnecessary)
luaL_checkinteger (function argument checking unnecessary)
luaL_checklong (function argument checking unnecessary)
luaL_checklstring (function argument checking unnecessary)
luaL_checknumber (function argument checking unnecessary)
luaL_checkoption (function argument checking unnecessary)
luaL_checkstring (function argument checking unnecessary)
luaL_checktype (function argument checking unnecessary)
luaL_prepbuffer (use System.String concatenation or similar)
luaL_pushresult (use System.String concatenation or similar)
luaL_register (all libs already opened, use require in scripts for external libs)
luaL_typerror (function argument checking unnecessary)
(complete lua_Debug interface omitted)
lua_gethook***
lua_getinfo
lua_getlocal
lua_getstack
lua_getupvalue
lua_sethook
lua_setlocal
lua_setupvalue
*/
public class LuaDLL
{
// for debugging
// const string BASEPATH = @"C:\development\software\dotnet\tools\PulseRecognizer\PulseRecognizer\bin\Debug\";
// const string BASEPATH = @"C:\development\software\ThirdParty\lua\Built\";
const string LUADLL = "lua51.dll";
const string LUALIBDLL = LUADLL;
const string STUBDLL = LUADLL;
// steffenj: BEGIN additional Lua API functions new in Lua 5.1
[DllImport(LUADLL, CallingConvention = CallingConvention.Cdecl)]
public static extern int lua_gc(IntPtr luaState, LuaGCOptions what, int data);
[DllImport(LUADLL, CallingConvention = CallingConvention.Cdecl)]
public static extern string lua_typename(IntPtr luaState, LuaTypes type);
public static string luaL_typename(IntPtr luaState, int stackPos)
{
return LuaDLL.lua_typename(luaState, LuaDLL.lua_type(luaState, stackPos));
}
[DllImport(LUALIBDLL, CallingConvention = CallingConvention.Cdecl)]
public static extern void luaL_error(IntPtr luaState, string message);
[DllImport(LUALIBDLL, CallingConvention = CallingConvention.Cdecl)]
public static extern string luaL_gsub(IntPtr luaState, string str, string pattern, string replacement);
// the functions below are still untested
[DllImport(LUADLL, CallingConvention = CallingConvention.Cdecl)]
public static extern void lua_getfenv(IntPtr luaState, int stackPos);
[DllImport(LUADLL, CallingConvention = CallingConvention.Cdecl)]
public static extern int lua_isfunction(IntPtr luaState, int stackPos);
[DllImport(LUADLL, CallingConvention = CallingConvention.Cdecl)]
public static extern int lua_islightuserdata(IntPtr luaState, int stackPos);
[DllImport(LUADLL, CallingConvention = CallingConvention.Cdecl)]
public static extern int lua_istable(IntPtr luaState, int stackPos);
[DllImport(LUADLL, CallingConvention = CallingConvention.Cdecl)]
public static extern int lua_isuserdata(IntPtr luaState, int stackPos);
[DllImport(LUADLL, CallingConvention = CallingConvention.Cdecl)]
public static extern int lua_lessthan(IntPtr luaState, int stackPos1, int stackPos2);
[DllImport(LUADLL, CallingConvention = CallingConvention.Cdecl)]
public static extern int lua_rawequal(IntPtr luaState, int stackPos1, int stackPos2);
[DllImport(LUADLL, CallingConvention = CallingConvention.Cdecl)]
public static extern int lua_setfenv(IntPtr luaState, int stackPos);
[DllImport(LUADLL, CallingConvention = CallingConvention.Cdecl)]
public static extern void lua_setfield(IntPtr luaState, int stackPos, string name);
[DllImport(LUALIBDLL, CallingConvention = CallingConvention.Cdecl)]
public static extern int luaL_callmeta(IntPtr luaState, int stackPos, string name);
// steffenj: END additional Lua API functions new in Lua 5.1
// steffenj: BEGIN Lua 5.1.1 API change (lua_open replaced by luaL_newstate)
[DllImport(LUALIBDLL, CallingConvention = CallingConvention.Cdecl)]
public static extern IntPtr luaL_newstate();
/// DEPRECATED - use luaL_newstate() instead!
public static IntPtr lua_open()
{
return LuaDLL.luaL_newstate();
}
// steffenj: END Lua 5.1.1 API change (lua_open replaced by luaL_newstate)
[DllImport(LUADLL, CallingConvention = CallingConvention.Cdecl)]
public static extern void lua_close(IntPtr luaState);
// steffenj: BEGIN Lua 5.1.1 API change (new function luaL_openlibs)
[DllImport(LUALIBDLL, CallingConvention = CallingConvention.Cdecl)]
public static extern void luaL_openlibs(IntPtr luaState);
/*
[DllImport(LUALIBDLL, CallingConvention = CallingConvention.Cdecl)]
public static extern void luaopen_base(IntPtr luaState);
[DllImport(LUALIBDLL,CallingConvention=CallingConvention.Cdecl)]
public static extern void luaopen_io(IntPtr luaState);
[DllImport(LUALIBDLL,CallingConvention=CallingConvention.Cdecl)]
public static extern void luaopen_table(IntPtr luaState);
[DllImport(LUALIBDLL,CallingConvention=CallingConvention.Cdecl)]
public static extern void luaopen_string(IntPtr luaState);
[DllImport(LUALIBDLL,CallingConvention=CallingConvention.Cdecl)]
public static extern void luaopen_math(IntPtr luaState);
[DllImport(LUALIBDLL,CallingConvention=CallingConvention.Cdecl)]
public static extern void luaopen_debug(IntPtr luaState);
[DllImport(LUALIBDLL,CallingConvention=CallingConvention.Cdecl)]
public static extern void luaopen_loadlib(IntPtr luaState);
*/
// steffenj: END Lua 5.1.1 API change (new function luaL_openlibs)
// steffenj: BEGIN Lua 5.1.1 API change (lua_strlen is now lua_objlen)
[DllImport(LUADLL, CallingConvention = CallingConvention.Cdecl)]
public static extern int lua_objlen(IntPtr luaState, int stackPos);
/// DEPRECATED - use lua_objlen(IntPtr luaState, int stackPos) instead!
public static int lua_strlen(IntPtr luaState, int stackPos)
{
return lua_objlen(luaState, stackPos);
}
// steffenj: END Lua 5.1.1 API change (lua_strlen is now lua_objlen)
// steffenj: BEGIN Lua 5.1.1 API change (lua_dostring is now a macro luaL_dostring)
[DllImport(LUALIBDLL, CallingConvention = CallingConvention.Cdecl)]
public static extern int luaL_loadstring(IntPtr luaState, string chunk);
public static int luaL_dostring(IntPtr luaState, string chunk)
{
int result = LuaDLL.luaL_loadstring(luaState, chunk);
if (result != 0)
return result;
return LuaDLL.lua_pcall(luaState, 0, -1, 0);
}
/// DEPRECATED - use luaL_dostring(IntPtr luaState, string chunk) instead!
public static int lua_dostring(IntPtr luaState, string chunk)
{
return LuaDLL.luaL_dostring(luaState, chunk);
}
// steffenj: END Lua 5.1.1 API change (lua_dostring is now a macro luaL_dostring)
// steffenj: BEGIN Lua 5.1.1 API change (lua_newtable is gone, lua_createtable is new)
[DllImport(LUADLL, CallingConvention = CallingConvention.Cdecl)]
public static extern void lua_createtable(IntPtr luaState, int narr, int nrec);
public static void lua_newtable(IntPtr luaState)
{
LuaDLL.lua_createtable(luaState, 0, 0);
}
// steffenj: END Lua 5.1.1 API change (lua_newtable is gone, lua_createtable is new)
// steffenj: BEGIN Lua 5.1.1 API change (lua_dofile now in LuaLib as luaL_dofile macro)
//[DllImport(LUALIBDLL, CallingConvention = CallingConvention.Cdecl)]
public static int luaL_dofile(IntPtr luaState, string fileName)
{
int result = LuaDLL.luaL_loadfile(luaState, fileName);
if (result != 0)
return result;
return LuaDLL.lua_pcall(luaState, 0, -1, 0);
}
// steffenj: END Lua 5.1.1 API change (lua_dofile now in LuaLib as luaL_dofile)
public static void lua_getglobal(IntPtr luaState, string name)
{
LuaDLL.lua_pushstring(luaState,name);
LuaDLL.lua_gettable(luaState,LuaIndexes.LUA_GLOBALSINDEX);
}
public static void lua_setglobal(IntPtr luaState, string name)
{
LuaDLL.lua_pushstring(luaState,name);
LuaDLL.lua_insert(luaState,-2);
LuaDLL.lua_settable(luaState,LuaIndexes.LUA_GLOBALSINDEX);
}
[DllImport(LUADLL,CallingConvention=CallingConvention.Cdecl)]
public static extern void lua_settop(IntPtr luaState, int newTop);
// steffenj: BEGIN added lua_pop "macro"
public static void lua_pop(IntPtr luaState, int amount)
{
LuaDLL.lua_settop(luaState, -(amount) - 1);
}
// steffenj: END added lua_pop "macro"
[DllImport(LUADLL, CallingConvention = CallingConvention.Cdecl)]
public static extern void lua_insert(IntPtr luaState, int newTop);
[DllImport(LUADLL,CallingConvention=CallingConvention.Cdecl)]
public static extern void lua_remove(IntPtr luaState, int index);
[DllImport(LUADLL,CallingConvention=CallingConvention.Cdecl)]
public static extern void lua_gettable(IntPtr luaState, int index);
[DllImport(LUADLL,CallingConvention=CallingConvention.Cdecl)]
public static extern void lua_rawget(IntPtr luaState, int index);
[DllImport(LUADLL,CallingConvention=CallingConvention.Cdecl)]
public static extern void lua_settable(IntPtr luaState, int index);
[DllImport(LUADLL,CallingConvention=CallingConvention.Cdecl)]
public static extern void lua_rawset(IntPtr luaState, int index);
[DllImport(LUADLL,CallingConvention=CallingConvention.Cdecl)]
public static extern void lua_setmetatable(IntPtr luaState, int objIndex);
[DllImport(LUADLL,CallingConvention=CallingConvention.Cdecl)]
public static extern int lua_getmetatable(IntPtr luaState, int objIndex);
[DllImport(LUADLL,CallingConvention=CallingConvention.Cdecl)]
public static extern int lua_equal(IntPtr luaState, int index1, int index2);
[DllImport(LUADLL,CallingConvention=CallingConvention.Cdecl)]
public static extern void lua_pushvalue(IntPtr luaState, int index);
[DllImport(LUADLL,CallingConvention=CallingConvention.Cdecl)]
public static extern void lua_replace(IntPtr luaState, int index);
[DllImport(LUADLL,CallingConvention=CallingConvention.Cdecl)]
public static extern int lua_gettop(IntPtr luaState);
[DllImport(LUADLL,CallingConvention=CallingConvention.Cdecl)]
public static extern LuaTypes lua_type(IntPtr luaState, int index);
public static bool lua_isnil(IntPtr luaState, int index)
{
return (LuaDLL.lua_type(luaState,index)==LuaTypes.LUA_TNIL);
}
[DllImport(LUADLL,CallingConvention=CallingConvention.Cdecl)]
public static extern bool lua_isnumber(IntPtr luaState, int index);
public static bool lua_isboolean(IntPtr luaState, int index)
{
return LuaDLL.lua_type(luaState,index)==LuaTypes.LUA_TBOOLEAN;
}
[DllImport(LUALIBDLL,CallingConvention=CallingConvention.Cdecl)]
public static extern int luaL_ref(IntPtr luaState, int registryIndex);
public static int lua_ref(IntPtr luaState, int lockRef)
{
if(lockRef!=0)
{
return LuaDLL.luaL_ref(luaState,LuaIndexes.LUA_REGISTRYINDEX);
}
else return 0;
}
[DllImport(LUADLL,CallingConvention=CallingConvention.Cdecl)]
public static extern void lua_rawgeti(IntPtr luaState, int tableIndex, int index);
[DllImport(LUADLL,CallingConvention=CallingConvention.Cdecl)]
public static extern void lua_rawseti(IntPtr luaState, int tableIndex, int index);
[DllImport(LUADLL,CallingConvention=CallingConvention.Cdecl)]
public static extern IntPtr lua_newuserdata(IntPtr luaState, int size);
[DllImport(LUADLL,CallingConvention=CallingConvention.Cdecl)]
public static extern IntPtr lua_touserdata(IntPtr luaState, int index);
public static void lua_getref(IntPtr luaState, int reference)
{
LuaDLL.lua_rawgeti(luaState,LuaIndexes.LUA_REGISTRYINDEX,reference);
}
[DllImport(LUALIBDLL,CallingConvention=CallingConvention.Cdecl)]
public static extern void luaL_unref(IntPtr luaState, int registryIndex, int reference);
public static void lua_unref(IntPtr luaState, int reference)
{
LuaDLL.luaL_unref(luaState,LuaIndexes.LUA_REGISTRYINDEX,reference);
}
[DllImport(LUADLL,CallingConvention=CallingConvention.Cdecl)]
public static extern bool lua_isstring(IntPtr luaState, int index);
[DllImport(LUADLL,CallingConvention=CallingConvention.Cdecl)]
public static extern bool lua_iscfunction(IntPtr luaState, int index);
[DllImport(LUADLL,CallingConvention=CallingConvention.Cdecl)]
public static extern void lua_pushnil(IntPtr luaState);
[DllImport(STUBDLL,CallingConvention=CallingConvention.Cdecl)]
public static extern void lua_pushstdcallcfunction(IntPtr luaState, [MarshalAs(UnmanagedType.FunctionPtr)]LuaCSFunction function);
[DllImport(LUADLL,CallingConvention=CallingConvention.Cdecl)]
public static extern int lua_call(IntPtr luaState, int nArgs, int nResults);
[DllImport(LUADLL,CallingConvention=CallingConvention.Cdecl)]
public static extern int lua_pcall(IntPtr luaState, int nArgs, int nResults, int errfunc);
[DllImport(LUADLL,CallingConvention=CallingConvention.Cdecl)]
public static extern int lua_rawcall(IntPtr luaState, int nArgs, int nResults);
[DllImport(LUADLL,CallingConvention=CallingConvention.Cdecl)]
public static extern IntPtr lua_tocfunction(IntPtr luaState, int index);
[DllImport(LUADLL,CallingConvention=CallingConvention.Cdecl)]
public static extern double lua_tonumber(IntPtr luaState, int index);
[DllImport(LUADLL,CallingConvention=CallingConvention.Cdecl)]
public static extern bool lua_toboolean(IntPtr luaState, int index);
[DllImport(LUADLL,CallingConvention = CallingConvention.Cdecl)]
public static extern IntPtr lua_tolstring(IntPtr luaState, int index, out int strLen);
public static string lua_tostring(IntPtr luaState, int index)
{
int strlen;
IntPtr str = lua_tolstring(luaState, index, out strlen);
if (str != IntPtr.Zero)
return Marshal.PtrToStringAnsi(str, strlen);
else
return null; // treat lua nulls to as C# nulls
}
[DllImport(LUADLL, CallingConvention = CallingConvention.Cdecl)]
public static extern void lua_atpanic(IntPtr luaState, LuaFunctionCallback panicf);
[DllImport(LUADLL,CallingConvention=CallingConvention.Cdecl)]
public static extern void lua_pushnumber(IntPtr luaState, double number);
[DllImport(LUADLL,CallingConvention=CallingConvention.Cdecl)]
public static extern void lua_pushboolean(IntPtr luaState, bool value);
[DllImport(LUADLL,CallingConvention=CallingConvention.Cdecl)]
public static extern void lua_pushlstring(IntPtr luaState, string str, int size);
[DllImport(LUADLL,CallingConvention=CallingConvention.Cdecl)]
public static extern void lua_pushstring(IntPtr luaState, string str);
[DllImport(LUALIBDLL,CallingConvention=CallingConvention.Cdecl)]
public static extern int luaL_newmetatable(IntPtr luaState, string meta);
// steffenj: BEGIN Lua 5.1.1 API change (luaL_getmetatable is now a macro using lua_getfield)
[DllImport(LUADLL, CallingConvention = CallingConvention.Cdecl)]
public static extern void lua_getfield(IntPtr luaState, int stackPos, string meta);
public static void luaL_getmetatable(IntPtr luaState, string meta)
{
LuaDLL.lua_getfield(luaState, LuaIndexes.LUA_REGISTRYINDEX, meta);
}
// steffenj: END Lua 5.1.1 API change (luaL_getmetatable is now a macro using lua_getfield)
[DllImport(LUALIBDLL, CallingConvention = CallingConvention.Cdecl)]
public static extern IntPtr luaL_checkudata(IntPtr luaState, int stackPos, string meta);
[DllImport(LUALIBDLL,CallingConvention=CallingConvention.Cdecl)]
public static extern bool luaL_getmetafield(IntPtr luaState, int stackPos, string field);
[DllImport(LUADLL,CallingConvention=CallingConvention.Cdecl)]
public static extern int lua_load(IntPtr luaState, LuaChunkReader chunkReader, ref ReaderInfo data, string chunkName);
[DllImport(LUALIBDLL,CallingConvention=CallingConvention.Cdecl)]
public static extern int luaL_loadbuffer(IntPtr luaState, string buff, int size, string name);
[DllImport(LUALIBDLL,CallingConvention=CallingConvention.Cdecl)]
public static extern int luaL_loadfile(IntPtr luaState, string filename);
[DllImport(STUBDLL,CallingConvention=CallingConvention.Cdecl)]
public static extern bool luaL_checkmetatable(IntPtr luaState,int obj);
[DllImport(STUBDLL,CallingConvention=CallingConvention.Cdecl)]
public static extern int luanet_tonetobject(IntPtr luaState,int obj);
[DllImport(STUBDLL,CallingConvention=CallingConvention.Cdecl)]
public static extern int luanet_newudata(IntPtr luaState,int val);
[DllImport(STUBDLL,CallingConvention=CallingConvention.Cdecl)]
public static extern int luanet_rawnetobj(IntPtr luaState,int obj);
[DllImport(STUBDLL,CallingConvention=CallingConvention.Cdecl)]
public static extern int luanet_checkudata(IntPtr luaState,int obj,string meta);
[DllImport(LUADLL,CallingConvention=CallingConvention.Cdecl)]
public static extern void lua_error(IntPtr luaState);
[DllImport(LUADLL, CallingConvention = CallingConvention.Cdecl)]
public static extern bool lua_checkstack(IntPtr luaState,int extra);
[DllImport(LUADLL,CallingConvention=CallingConvention.Cdecl)]
public static extern int lua_next(IntPtr luaState,int index);
[DllImport(LUADLL,CallingConvention=CallingConvention.Cdecl)]
public static extern void lua_pushlightuserdata(IntPtr luaState, IntPtr udata);
[DllImport(STUBDLL,CallingConvention=CallingConvention.Cdecl)]
public static extern IntPtr luanet_gettag();
[DllImport(LUADLL,CallingConvention=CallingConvention.Cdecl)]
public static extern void luaL_where (IntPtr luaState, int level);
}
}