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dlua.pas
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(*
** $Id: lua.h,v 1.325 2014/12/26 17:24:27 roberto Exp $
** Lua - A Scripting Language
** Lua.org, PUC-Rio, Brazil (http://www.lua.org)
** See Copyright Notice at the end of this file
*)
//Pascal unit with dynamic loading of lua lib by M van der Honing
unit dlua;
interface
//Defines to configure freepascal
{$IFDEF FPC}
{$MODE Delphi}
{$IFNDEF WINDOWS}
{$LINKLIB c}
{$ENDIF}
{$ENDIF}
const
{$IFDEF LINUX}
LUA_NAME = 'liblua.so.5.3.0';
{$ELSE}
LUA_NAME = 'lua53.dll';
{$ENDIF}
//Dynamic loading and unloading of Lua libs
function loadLua: boolean;
function loadLuaFrom(FileName: string): boolean;
procedure unLoadLua;
function isLuaLoaded: boolean;
//LuaConf
type
size_t = cardinal;
Psize_t = ^size_t;
const
//maximum stack available.
//CHANGE it if you need a different limit. This limit is arbitrary;
//its only purpose is to stop Lua to consume unlimited stack
//space (and to reserve some numbers for pseudo-indices)
{$IFDEF CPU64}
LUAI_MAXSTACK = 1000000;
{$ELSE}
LUAI_MAXSTACK = 1000000; //C value : 15000
{$ENDIF}
LUAI_FIRSTPSEUDOIDX = (-LUAI_MAXSTACK - 1000);
//LUA_IDSIZE gives the maximum size for the description of the source
//of a function in debug information.
//CHANGE it if you want a different size.
LUA_IDSIZE = 60;
LUA_VERSION_NUM = 503;
//Lua
//option for multiple returns in 'lua_pcall' and 'lua_call'
const
LUA_MULTRET = -1;
//pseudo-indices
LUA_REGISTRYINDEX = LUAI_FIRSTPSEUDOIDX;
function lua_upvalueindex(I: integer): integer; inline;
//thread status
const
LUA_OK = 0;
LUA_YIELD_ = 1; // LUA_YIELD was suffixed by '_' for avoiding name collision
LUA_ERRRUN = 2;
LUA_ERRSYNTAX = 3;
LUA_ERRMEM = 4;
LUA_ERRGCMM = 5;
LUA_ERRERR = 6;
type
Plua_State = Pointer; //TODO: base on type instead of pointer
//basic types
const
LUA_TNONE = (-1);
LUA_TNIL = 0;
LUA_TBOOLEAN = 1;
LUA_TLIGHTUSERDATA = 2;
LUA_TNUMBER = 3;
LUA_TSTRING = 4;
LUA_TTABLE = 5;
LUA_TFUNCTION = 6;
LUA_TUSERDATA = 7;
LUA_TTHREAD = 8;
LUA_NUMTAGS = 9;
//minimum Lua stack available to a C function
LUA_MINSTACK = 20;
//predefined values in the registry
LUA_RIDX_MAINTHREAD = 1;
LUA_RIDX_GLOBALS = 2;
LUA_RIDX_LAST = LUA_RIDX_GLOBALS;
type
//type of numbers in Lua
lua_Number = double;
Plua_Number = ^lua_Number;
//type for integer functions
lua_Integer = int64;
//unsigned integer type
lua_Unsigned = UInt64;
//type for continuation-function contexts
lua_KContext = integer;
//Type for C functions registered with Lua
lua_CFunction = function(L: Plua_State): integer; cdecl;
//Type for continuation functions
lua_KFunction = function(L: Plua_State; status: integer; ctx: integer): integer; cdecl;
//Type for functions that read/write blocks when loading/dumping Lua chunks
lua_Reader = function(L: Plua_State; ud: Pointer; size: Psize_t): PChar; cdecl;
lua_Writer = function(L: Plua_State; const p: Pointer; sz: size_t; ud: Pointer): integer; cdecl;
//Type for memory-allocation functions
lua_Alloc = function(ud: Pointer; ptr: Pointer; osize: size_t; nsize: size_t): Pointer; cdecl;
//Comparison and arithmetic functions
const
LUA_OPADD = 0; // ORDER TM, ORDER OP
LUA_OPSUB = 1;
LUA_OPMUL = 2;
LUA_OPMOD = 3;
LUA_OPPOW = 4;
LUA_OPDIV = 5;
LUA_OPIDIV = 6;
LUA_OPBAND = 7;
LUA_OPBOR = 8;
LUA_OPBXOR = 9;
LUA_OPSHL = 10;
LUA_OPSHR = 11;
LUA_OPUNM = 12;
LUA_OPBNOT = 13;
//Comparison functions
LUA_OPEQ = 0;
LUA_OPLT = 1;
LUA_OPLE = 2;
//garbage-collection function and options
LUA_GCSTOP = 0;
LUA_GCRESTART = 1;
LUA_GCCOLLECT = 2;
LUA_GCCOUNT = 3;
LUA_GCCOUNTB = 4;
LUA_GCSTEP = 5;
LUA_GCSETPAUSE = 6;
LUA_GCSETSTEPMUL = 7;
LUA_GCISRUNNING = 9;
//lua api functions
var
//state manipulation
lua_newstate: function(f: lua_Alloc; ud: Pointer): Plua_State; cdecl;
lua_close: procedure(L: Plua_State); cdecl;
lua_newthread: function(L: Plua_State): Plua_State; cdecl;
lua_atpanic: function(L: Plua_State; panicf: lua_CFunction): lua_CFunction; cdecl;
lua_version: function(L: Plua_State): Plua_Number; cdecl;
//basic stack manipulation
lua_absindex: function(L: Plua_State; idx: integer): integer; cdecl;
lua_gettop: function(L: Plua_State): integer; cdecl;
lua_settop: procedure(L: Plua_State; idx: integer); cdecl;
lua_pushvalue: procedure(L: Plua_State; idx: integer); cdecl;
lua_rotate: procedure(L: Plua_State; idx: integer; n: integer); cdecl;
lua_copy: procedure(L: Plua_State; fromidx: integer; toidx: integer); cdecl;
lua_checkstack: function(L: Plua_State; n: integer): integer; cdecl;
lua_xmove: procedure(from: Plua_State; to_: Plua_State; n: integer); cdecl;
//access functions (stack -> C)
lua_isnumber: function(L: Plua_State; idx: integer): boolean; cdecl;
lua_isstring: function(L: Plua_State; idx: integer): boolean; cdecl;
lua_iscfunction: function(L: Plua_State; idx: integer): integer; cdecl;
lua_isinteger: function(L: Plua_State; idx: integer): integer; cdecl;
lua_isuserdata: function(L: Plua_State; idx: integer): integer; cdecl;
lua_type: function(L: Plua_State; idx: integer): integer; cdecl;
lua_typename: function(L: Plua_State; tp: integer): PChar; cdecl;
lua_tonumberx: function(L: Plua_State; idx: integer; isnum: PInteger): lua_Number; cdecl;
lua_tointegerx: function(L: Plua_State; idx: integer; isnum: Pinteger): lua_Integer; cdecl;
lua_toboolean: function(L: Plua_State; idx: integer): boolean; cdecl;
lua_tolstring: function(L: Plua_State; idx: integer; len: psize_t): PChar; cdecl;
lua_rawlen: function(L: Plua_State; idx: integer): size_t; cdecl;
lua_tocfunction: function(L: Plua_State; idx: integer): lua_CFunction; cdecl;
lua_touserdata: function(L: Plua_State; idx: integer): Pointer; cdecl;
lua_tothread: function(L: Plua_State; idx: integer): Plua_State; cdecl;
lua_topointer: function(L: Plua_State; idx: integer): Pointer; cdecl;
//Comparison and arithmetic functions
lua_arith: procedure(L: Plua_State; op: integer); cdecl;
lua_rawequal: function(L: Plua_State; idx1: integer; idx2: integer): integer; cdecl;
lua_compare: function(L: Plua_State; idx1: integer; idx2: integer; op: integer): integer; cdecl;
//push functions (C -> stack)
lua_pushnil: procedure(L: Plua_State); cdecl;
lua_pushnumber: procedure(L: Plua_State; n: lua_Number); cdecl;
lua_pushinteger: procedure(L: Plua_State; n: lua_Integer); cdecl;
lua_pushlstring: function(L: Plua_State; const s: PChar; len: size_t): PChar; cdecl;
lua_pushstring: function(L: Plua_State; const s: PChar): PChar; cdecl;
lua_pushvfstring: function(L: Plua_State; const fmt: PChar; argp: pointer): PChar; cdecl;
lua_pushfstring: function(L: Plua_State; const fmt: PChar; arg: array of Pointer): PChar; cdecl;
lua_pushcclosure: procedure(L: Plua_State; fn: lua_CFunction; n: integer); cdecl;
lua_pushboolean: procedure(L: Plua_State; b: boolean); cdecl;
lua_pushlightuserdata: procedure(L: Plua_State; p: pointer); cdecl;
lua_pushthread: function(L: Plua_State): integer; cdecl;
//get functions (Lua -> stack)
lua_getglobal: function(L: Plua_State; const Name: PChar): integer; cdecl;
lua_gettable: function(L: Plua_State; idx: integer): integer; cdecl;
lua_getfield: function(L: Plua_State; idx: integer; const k: PChar): integer; cdecl;
lua_geti: function(L: Plua_State; idx: integer; n: lua_Integer): integer; cdecl;
lua_rawget: function(L: Plua_State; idx: integer): integer; cdecl;
lua_rawgeti: function(L: Plua_State; idx: integer; n: lua_Integer): integer; cdecl;
lua_rawgetp: function(L: Plua_State; idx: integer; const p: Pointer): integer; cdecl;
lua_createtable: procedure(L: Plua_State; narr: integer; nrec: integer); cdecl;
lua_newuserdata: function(L: Plua_State; sz: size_t): Pointer; cdecl;
lua_getmetatable: function(L: Plua_State; objindex: integer): integer; cdecl;
lua_getuservalue: function(L: Plua_State; idx: integer): integer; cdecl;
//set functions (stack -> Lua)
lua_setglobal: procedure(L: Plua_State; const Name: PChar); cdecl;
lua_settable: procedure(L: Plua_State; idx: integer); cdecl;
lua_setfield: procedure(L: Plua_State; idx: integer; const k: PChar); cdecl;
lua_seti: procedure(L: Plua_State; idx: integer; n: lua_Integer); cdecl;
lua_rawset: procedure(L: Plua_State; idx: integer); cdecl;
lua_rawseti: procedure(L: Plua_State; idx: integer; n: lua_Integer); cdecl;
lua_rawsetp: procedure(L: Plua_State; idx: integer; const p: Pointer); cdecl;
lua_setmetatable: function(L: Plua_State; objindex: integer): integer; cdecl;
lua_setuservalue: procedure(L: Plua_State; idx: integer); cdecl;
//'load' and 'call' functions (load and run Lua code)
lua_callk: procedure(L: Plua_State; nargs: integer; nresults: integer; ctx: integer; k: lua_KFunction); cdecl;
procedure lua_call(L: Plua_State; n: integer; r: integer); inline;
var
lua_pcallk: function(L: Plua_State; nargs: integer; nresults: integer; errfunc: integer; ctx: integer; k: lua_KFunction): integer; cdecl;
function lua_pcall(L: Plua_State; n: integer; r: integer; f: integer): integer; inline;
var
lua_load: function(L: Plua_State; reader: lua_Reader; dt: Pointer; const chunkname: PChar; const mode: PChar): integer; cdecl;
lua_dump: function(L: Plua_State; writer: lua_Writer; Data: Pointer; strip: integer): integer; cdecl;
//coroutine functions
lua_yieldk: function(L: Plua_State; nresults: integer; ctx: integer; k: lua_KFunction): integer; cdecl;
lua_resume: function(L: Plua_State; from: Plua_State; narg: integer): integer; cdecl;
lua_status: function(L: Plua_State): integer; cdecl;
lua_isyieldable: function(L: Plua_State): integer; cdecl;
function lua_yield(L: Plua_State; n: integer): integer; inline;
var
//garbage-collection function and options
lua_gc: function(L: Plua_State; what: integer; Data: integer): integer; cdecl;
//miscellaneous functions
lua_error: function(L: Plua_State): integer; cdecl;
lua_next: function(L: Plua_State; idx: integer): integer; cdecl;
lua_concat: procedure(L: Plua_State; n: integer); cdecl;
lua_len: procedure(L: Plua_State; idx: integer); cdecl;
lua_stringtonumber: function(L: Plua_State; const s: PChar): size_t; cdecl;
lua_getallocf: function(L: Plua_State; ud: PPointer): lua_Alloc; cdecl;
lua_setallocf: procedure(L: Plua_State; f: lua_Alloc; ud: Pointer); cdecl;
//some useful macros
function lua_getextraspace(L: Plua_State): Pointer; inline;
function lua_tonumber(L: Plua_State; i: integer): lua_Number; inline;
function lua_tointeger(L: Plua_State; i: integer): lua_Integer; inline;
procedure lua_pop(L: Plua_State; n: integer); inline;
procedure lua_newtable(L: Plua_State); inline;
procedure lua_register(L: Plua_State; const n: PChar; f: lua_CFunction); inline;
procedure lua_pushcfunction(L: Plua_State; f: lua_CFunction); inline;
function lua_isfunction(L: Plua_State; n: integer): boolean; inline;
function lua_istable(L: Plua_State; n: integer): boolean; inline;
function lua_islightuserdata(L: Plua_State; n: integer): boolean; inline;
function lua_isnil(L: Plua_State; n: integer): boolean; inline;
function lua_isboolean(L: Plua_State; n: integer): boolean; inline;
function lua_isthread(L: Plua_State; n: integer): boolean; inline;
function lua_isnone(L: Plua_State; n: integer): boolean; inline;
function lua_isnoneornil(L: Plua_State; n: integer): boolean; inline;
procedure lua_pushliteral(L: Plua_State; s: PChar); inline;
procedure lua_pushglobaltable(L: Plua_State); inline;
function lua_tostring(L: Plua_State; i: integer): PChar; inline;
procedure lua_insert(L: Plua_State; idx: integer); inline;
procedure lua_remove(L: Plua_State; idx: integer); inline;
procedure lua_replace(L: Plua_State; idx: integer); inline;
//depracted
function lua_open: Plua_State; inline;
//Debug API
const
// Event codes
LUA_HOOKCALL = 0;
LUA_HOOKRET = 1;
LUA_HOOKLINE = 2;
LUA_HOOKCOUNT = 3;
LUA_HOOKTAILCALL = 4;
//Event masks
LUA_MASKCALL = 1 shl Ord(LUA_HOOKCALL);
LUA_MASKRET = 1 shl Ord(LUA_HOOKRET);
LUA_MASKLINE = 1 shl Ord(LUA_HOOKLINE);
LUA_MASKCOUNT = 1 shl Ord(LUA_HOOKCOUNT);
type
lua_Debug = record //activation record
event: integer;
Name: PChar; // (n)
namewhat: PChar; // (n) 'global', 'local', 'field', 'method'
what: PChar; // (S) 'Lua' function, 'C' function, Lua 'main'
Source: PChar; // (S)
currentline: integer; // (l)
linedefined: integer; // (S)
lastlinedefined: integer; // (S)
nups: byte; // (u) number of upvalues
nparams: byte; // (u) number of parameters
isvararg: bytebool; // (u)
istailcall: bytebool; // (t)
short_src: packed array[0..LUA_IDSIZE - 1] of char; // (S)
//private part
i_ci: Pointer; // active function
end;
Plua_Debug = ^lua_Debug;
//Functions to be called by the debugger in specific events
lua_Hook = procedure(L: Plua_State; ar: Plua_Debug); cdecl;
var
lua_getstack: function(L: Plua_State; level: integer; ar: Plua_Debug): integer; cdecl;
lua_getinfo: function(L: Plua_State; const what: PChar; ar: Plua_Debug): integer; cdecl;
lua_getlocal: function(L: Plua_State; const ar: Plua_Debug; n: integer): PChar; cdecl;
lua_setlocal: function(L: Plua_State; const ar: Plua_Debug; n: integer): PChar; cdecl;
lua_getupvalue: function(L: Plua_State; funcindex: integer; n: integer): PChar; cdecl;
lua_setupvalue: function(L: Plua_State; funcindex: integer; n: integer): PChar; cdecl;
lua_upvalueid: function(L: Plua_State; fidx: integer; n: integer): Pointer; cdecl;
lua_upvaluejoin: procedure(L: Plua_State; fidx1: integer; n1: integer; fidx2: integer; n2: integer); cdecl;
lua_sethook: procedure(L: Plua_State; func: lua_Hook; mask: integer; Count: integer); cdecl;
lua_gethook: function(L: Plua_State): lua_Hook; cdecl;
lua_gethookmask: function(L: Plua_State): integer; cdecl;
lua_gethookcount: function(L: Plua_State): integer; cdecl;
//LuaLib
var
luaopen_base: function(L: Plua_State): integer; cdecl;
const
LUA_COLIBNAME = 'coroutine';
var
luaopen_coroutine: function(L: Plua_State): integer; cdecl;
const
LUA_TABLIBNAME = 'table';
var
luaopen_table: function(L: Plua_State): integer; cdecl;
const
LUA_IOLIBNAME = 'io';
var
luaopen_io: function(L: Plua_State): integer; cdecl;
const
LUA_OSLIBNAME = 'os';
var
luaopen_os: function(L: Plua_State): integer; cdecl;
const
LUA_STRLIBNAME = 'string';
var
luaopen_string: function(L: Plua_State): integer; cdecl;
const
LUA_UTF8LIBNAME = 'utf8';
var
luaopen_utf8: function(L: Plua_State): integer; cdecl;
const
LUA_BITLIBNAME = 'bit32';
var
luaopen_bit32: function(L: Plua_State): integer; cdecl;
const
LUA_MATHLIBNAME = 'math';
var
luaopen_math: function(L: Plua_State): integer; cdecl;
const
LUA_DBLIBNAME = 'debug';
var
luaopen_debug: function(L: Plua_State): integer; cdecl;
const
LUA_LOADLIBNAME = 'package';
var
luaopen_package: function(L: Plua_State): integer; cdecl;
//open all previous libraries
luaL_openlibs: procedure(L: Plua_State); cdecl;
//LuaXLib
const
LUA_ERRFILE = LUA_ERRERR + 1; // extra error code for 'luaL_load'
type
luaL_reg = record
Name: PChar;
func: lua_CFunction;
end;
PluaL_reg = ^luaL_reg;
const
LUAL_NUMSIZES = sizeof(lua_Integer) * 16 + sizeof(lua_Number);
// pre-defined references
LUA_NOREF = -2;
LUA_REFNIL = -1;
var
luaL_checkversion_: procedure(L: Plua_State; ver: lua_Number; sz: size_t); cdecl;
procedure luaL_checkversion(L: PLua_State);
var
luaL_getmetafield: function(L: Plua_State; obj: integer; const e: PChar): integer; cdecl;
luaL_callmeta: function(L: Plua_State; obj: integer; const event: PChar): integer; cdecl;
luaL_tolstring: function(L: Plua_State; idx: integer; len: size_t): PChar; cdecl;
luaL_argerror: function(L: Plua_State; arg: integer; const extramsg: PChar): integer; cdecl;
luaL_checklstring: function(L: Plua_State; arg: integer; length: Psize_t): PChar; cdecl;
luaL_optlstring: function(L: Plua_State; arg: integer; const def: PChar; length: Psize_t): PChar; cdecl;
luaL_checknumber: function(L: Plua_State; arg: integer): lua_Number; cdecl;
luaL_optnumber: function(L: Plua_State; arg: integer; def: lua_Number): lua_Number; cdecl;
luaL_checkinteger: function(L: Plua_State; arg: integer): lua_Integer; cdecl;
luaL_optinteger: function(L: Plua_State; arg: integer; def: lua_Integer): lua_Integer; cdecl;
luaL_check_stack: procedure(L: Plua_State; sz: integer; const msg: PChar); cdecl;
luaL_check_type: procedure(L: Plua_State; arg: integer; t: integer); cdecl;
luaL_check_any: procedure(L: Plua_State; arg: integer); cdecl;
luaL_newmetatable: function(L: Plua_State; const tname: PChar): integer; cdecl;
luaL_setmetatable: procedure(L: Plua_State; const tname: PChar); cdecl;
luaL_testudata: function(L: Plua_State; ud: integer; const tname: PChar): Pointer; cdecl;
luaL_checkudata: function(L: Plua_State; ud: integer; const tname: PChar): Pointer; cdecl;
luaL_where: procedure(L: Plua_State; lvl: integer); cdecl;
luaL_error: function(L: Plua_State; const fmt: PChar; args: array of const): integer; cdecl;
luaL_checkoption: function(L: Plua_State; arg: integer; const cdef: PChar; const lst: PPChar): integer; cdecl;
luaL_fileresult: function(L: Plua_State; stat: integer; const fname: PChar): integer; cdecl;
luaL_execresult: function(L: Plua_State; stat: integer): integer; cdecl;
luaL_ref: function(L: Plua_State; t: integer): integer; cdecl;
luaL_unref: procedure(L: Plua_State; t, ref: integer); cdecl;
luaL_loadfilex: function(L: Plua_State; const filename: PChar; const mode: PChar): integer; cdecl;
function luaL_loadfile(L: Plua_State; f: PChar): integer;
var
luaL_loadbufferx: function(L: Plua_State; buff: PChar; sz: size_t; Name: PChar; mode: PChar): integer; cdecl;
luaL_loadstring: function(L: Plua_State; const s: PChar): integer; cdecl;
luaL_newstate: function(): Plua_state; cdecl;
luaL_len: function(L: Plua_State; idx: integer): lua_Integer; cdecl;
luaL_gsub: function(L: Plua_State; const s: PChar; const p: PChar; const r: PChar): PChar; cdecl;
luaL_setfuncs: procedure(L: Plua_State; lr: PluaL_Reg; nup: integer); cdecl;
luaL_getsubtable: function(L: Plua_State; idx: integer; const fname: PChar): integer; cdecl;
luaL_traceback: procedure(L: Plua_State; L1: Plua_State; msg: PChar; level: integer); cdecl;
luaL_requiref: procedure(L: Plua_State; const modname: PChar; openf: lua_CFunction; glb: integer); cdecl;
//some useful macros
procedure luaL_newlibtable(L: Plua_State; lr: array of luaL_Reg); inline;
procedure luaL_newlib(L: Plua_State; lr: array of luaL_Reg); inline;
procedure luaL_arg_check(L: Plua_State; cond: boolean; numarg: integer; extramsg: PChar); inline;
function luaL_check_string(L: Plua_State; n: integer): PChar; inline;
function luaL_opt_string(L: Plua_State; n: integer; d: PChar): PChar; inline;
function luaL_typename(L: Plua_State; i: integer): PChar; inline;
function luaL_dofile(L: Plua_State; fn: PChar): integer; inline;
function luaL_dostring(L: Plua_State; s: PChar): integer; inline;
function luaL_getmetatable(L: Plua_State; n: PChar): integer; inline;
function luaL_loadbuffer(L: Plua_State; buff: PChar; sz: size_t; const Name: PChar): integer; inline;
//depracted
procedure luaL_openlib(L: Plua_State; const n: PChar; lr: PluaL_reg; nup: integer); inline;
//depracted
procedure luaL_register(L: Plua_State; n: PChar; lib: PLuaL_Reg); inline;
implementation
uses
{$IFDEF LINUX}
LibC,
{$ELSE}
Windows;
{$ENDIF}
//Dynamic loading and unloading of Lua libs
{$IFDEF LINUX}
const
INVALID_MODULE_HANDLE = nil;
type
LibHandle = Pointer;
function OpenLib(Name: PChar): LibHandle;
begin
Result := dlopen(Name);
end;
{$ELSE}
const
INVALID_MODULE_HANDLE = 0;
type
LibHandle = HINST;
function OpenLib(Name: PChar): LibHandle;
begin
Result := LoadLibrary(Name);
end;
{$ENDIF}
var
LuaHandle: LibHandle = INVALID_MODULE_HANDLE;
procedure ClearLuaProc;
begin
//Lua
lua_newstate := nil;
lua_close := nil;
lua_newthread := nil;
lua_atpanic := nil;
lua_version := nil;
lua_absindex := nil;
lua_gettop := nil;
lua_settop := nil;
lua_pushvalue := nil;
lua_rotate := nil;
lua_copy := nil;
lua_checkstack := nil;
lua_xmove := nil;
lua_isnumber := nil;
lua_isstring := nil;
lua_iscfunction := nil;
lua_isinteger := nil;
lua_isuserdata := nil;
lua_type := nil;
lua_typename := nil;
lua_tonumberx := nil;
lua_tointegerx := nil;
lua_toboolean := nil;
lua_tolstring := nil;
lua_rawlen := nil;
lua_tocfunction := nil;
lua_touserdata := nil;
lua_tothread := nil;
lua_topointer := nil;
lua_arith := nil;
lua_rawequal := nil;
lua_compare := nil;
lua_pushnil := nil;
lua_pushnumber := nil;
lua_pushinteger := nil;
lua_pushlstring := nil;
lua_pushstring := nil;
lua_pushvfstring := nil;
lua_pushfstring := nil;
lua_pushcclosure := nil;
lua_pushboolean := nil;
lua_pushlightuserdata := nil;
lua_pushthread := nil;
lua_getglobal := nil;
lua_gettable := nil;
lua_getfield := nil;
lua_geti := nil;
lua_rawget := nil;
lua_rawgeti := nil;
lua_rawgetp := nil;
lua_createtable := nil;
lua_newuserdata := nil;
lua_getmetatable := nil;
lua_getuservalue := nil;
lua_setglobal := nil;
lua_settable := nil;
lua_setfield := nil;
lua_seti := nil;
lua_rawset := nil;
lua_rawseti := nil;
lua_rawsetp := nil;
lua_setmetatable := nil;
lua_setuservalue := nil;
lua_callk := nil;
lua_pcallk := nil;
lua_load := nil;
lua_dump := nil;
lua_yieldk := nil;
lua_resume := nil;
lua_status := nil;
lua_isyieldable := nil;
lua_gc := nil;
lua_error := nil;
lua_next := nil;
lua_concat := nil;
lua_len := nil;
lua_stringtonumber := nil;
lua_getallocf := nil;
lua_setallocf := nil;
lua_getstack := nil;
lua_getinfo := nil;
lua_getlocal := nil;
lua_setlocal := nil;
lua_getupvalue := nil;
lua_setupvalue := nil;
lua_upvalueid := nil;
lua_upvaluejoin := nil;
lua_sethook := nil;
lua_gethook := nil;
lua_gethookmask := nil;
lua_gethookcount := nil;
//LuaLib
luaopen_base := nil;
luaopen_coroutine := nil;
luaopen_table := nil;
luaopen_io := nil;
luaopen_os := nil;
luaopen_string := nil;
luaopen_utf8 := nil;
luaopen_bit32 := nil;
luaopen_math := nil;
luaopen_debug := nil;
luaopen_package := nil;
luaL_openlibs := nil;
//LuaXLib
luaL_checkversion_ := nil;
luaL_getmetafield := nil;
luaL_callmeta := nil;
luaL_tolstring := nil;
luaL_argerror := nil;
luaL_checklstring := nil;
luaL_optlstring := nil;
luaL_checknumber := nil;
luaL_optnumber := nil;
luaL_checkinteger := nil;
luaL_optinteger := nil;
luaL_check_stack := nil;
luaL_check_type := nil;
luaL_check_any := nil;
luaL_newmetatable := nil;
luaL_setmetatable := nil;
luaL_testudata := nil;
luaL_checkudata := nil;
luaL_where := nil;
luaL_error := nil;
luaL_checkoption := nil;
luaL_fileresult := nil;
luaL_execresult := nil;
luaL_ref := nil;
luaL_unref := nil;
luaL_loadfilex := nil;
luaL_loadbufferx := nil;
luaL_loadstring := nil;
luaL_newstate := nil;
luaL_len := nil;
luaL_gsub := nil;
luaL_setfuncs := nil;
luaL_getsubtable := nil;
luaL_traceback := nil;
luaL_requiref := nil;
end;
procedure LoadLuaProc;
begin
if LuaHandle <> INVALID_MODULE_HANDLE then
begin
//Lua
lua_newstate := GetProcAddress(LuaHandle, 'lua_newstate');
lua_close := GetProcAddress(LuaHandle, 'lua_close');
lua_newthread := GetProcAddress(LuaHandle, 'lua_newthread');
lua_atpanic := GetProcAddress(LuaHandle, 'lua_atpanic');
lua_version := GetProcAddress(LuaHandle, 'lua_version');
lua_absindex := GetProcAddress(LuaHandle, 'lua_absindex');
lua_gettop := GetProcAddress(LuaHandle, 'lua_gettop');
lua_settop := GetProcAddress(LuaHandle, 'lua_settop');
lua_pushvalue := GetProcAddress(LuaHandle, 'lua_pushvalue');
lua_rotate := GetProcAddress(LuaHandle, 'lua_rotate');
lua_copy := GetProcAddress(LuaHandle, 'lua_copy');
lua_checkstack := GetProcAddress(LuaHandle, 'lua_checkstack');
lua_xmove := GetProcAddress(LuaHandle, 'lua_xmove');
lua_isnumber := GetProcAddress(LuaHandle, 'lua_isnumber');
lua_isstring := GetProcAddress(LuaHandle, 'lua_isstring');
lua_iscfunction := GetProcAddress(LuaHandle, 'lua_iscfunction');
lua_isinteger := GetProcAddress(LuaHandle, 'lua_isinteger');
lua_isuserdata := GetProcAddress(LuaHandle, 'lua_isuserdata');
lua_type := GetProcAddress(LuaHandle, 'lua_type');
lua_typename := GetProcAddress(LuaHandle, 'lua_typename');
lua_tonumberx := GetProcAddress(LuaHandle, 'lua_tonumberx');
lua_tointegerx := GetProcAddress(LuaHandle, 'lua_tointegerx');
lua_toboolean := GetProcAddress(LuaHandle, 'lua_toboolean');
lua_tolstring := GetProcAddress(LuaHandle, 'lua_tolstring');
lua_rawlen := GetProcAddress(LuaHandle, 'lua_rawlen');
lua_tocfunction := GetProcAddress(LuaHandle, 'lua_tocfunction');
lua_touserdata := GetProcAddress(LuaHandle, 'lua_touserdata');
lua_tothread := GetProcAddress(LuaHandle, 'lua_tothread');
lua_topointer := GetProcAddress(LuaHandle, 'lua_topointer');
lua_arith := GetProcAddress(LuaHandle, 'lua_arith');
lua_rawequal := GetProcAddress(LuaHandle, 'lua_rawequal');
lua_compare := GetProcAddress(LuaHandle, 'lua_compare');
lua_pushnil := GetProcAddress(LuaHandle, 'lua_pushnil');
lua_pushnumber := GetProcAddress(LuaHandle, 'lua_pushnumber');
lua_pushinteger := GetProcAddress(LuaHandle, 'lua_pushinteger');
lua_pushlstring := GetProcAddress(LuaHandle, 'lua_pushlstring');
lua_pushstring := GetProcAddress(LuaHandle, 'lua_pushstring');
lua_pushvfstring := GetProcAddress(LuaHandle, 'lua_pushvfstring');
lua_pushfstring := GetProcAddress(LuaHandle, 'lua_pushfstring');
lua_pushcclosure := GetProcAddress(LuaHandle, 'lua_pushcclosure');
lua_pushboolean := GetProcAddress(LuaHandle, 'lua_pushboolean');
lua_pushlightuserdata := GetProcAddress(LuaHandle, 'lua_pushlightuserdata');
lua_pushthread := GetProcAddress(LuaHandle, 'lua_pushthread');
lua_getglobal := GetProcAddress(LuaHandle, 'lua_getglobal');
lua_gettable := GetProcAddress(LuaHandle, 'lua_gettable');
lua_getfield := GetProcAddress(LuaHandle, 'lua_getfield');
lua_geti := GetProcAddress(LuaHandle, 'lua_geti');
lua_rawget := GetProcAddress(LuaHandle, 'lua_rawget');
lua_rawgeti := GetProcAddress(LuaHandle, 'lua_rawgeti');
lua_rawgetp := GetProcAddress(LuaHandle, 'lua_rawgetp');
lua_createtable := GetProcAddress(LuaHandle, 'lua_createtable');
lua_newuserdata := GetProcAddress(LuaHandle, 'lua_newuserdata');
lua_getmetatable := GetProcAddress(LuaHandle, 'lua_getmetatable');
lua_getuservalue := GetProcAddress(LuaHandle, 'lua_getuservalue');
lua_setglobal := GetProcAddress(LuaHandle, 'lua_setglobal');
lua_settable := GetProcAddress(LuaHandle, 'lua_settable');
lua_setfield := GetProcAddress(LuaHandle, 'lua_setfield');
lua_seti := GetProcAddress(LuaHandle, 'lua_seti');
lua_rawset := GetProcAddress(LuaHandle, 'lua_rawset');
lua_rawseti := GetProcAddress(LuaHandle, 'lua_rawseti');
lua_rawsetp := GetProcAddress(LuaHandle, 'lua_rawsetp');
lua_setmetatable := GetProcAddress(LuaHandle, 'lua_setmetatable');
lua_setuservalue := GetProcAddress(LuaHandle, 'lua_setuservalue');
lua_callk := GetProcAddress(LuaHandle, 'lua_callk');
lua_pcallk := GetProcAddress(LuaHandle, 'lua_pcallk');
lua_load := GetProcAddress(LuaHandle, 'lua_load');
lua_dump := GetProcAddress(LuaHandle, 'lua_dump');
lua_yieldk := GetProcAddress(LuaHandle, 'lua_yieldk');
lua_resume := GetProcAddress(LuaHandle, 'lua_resume');
lua_status := GetProcAddress(LuaHandle, 'lua_status');
lua_isyieldable := GetProcAddress(LuaHandle, 'lua_isyieldable');
lua_gc := GetProcAddress(LuaHandle, 'lua_gc');
lua_error := GetProcAddress(LuaHandle, 'lua_error');
lua_next := GetProcAddress(LuaHandle, 'lua_next');
lua_concat := GetProcAddress(LuaHandle, 'lua_concat');
lua_len := GetProcAddress(LuaHandle, 'lua_len');
lua_stringtonumber := GetProcAddress(LuaHandle, 'lua_stringtonumber');
lua_getallocf := GetProcAddress(LuaHandle, 'lua_getallocf');
lua_setallocf := GetProcAddress(LuaHandle, 'lua_setallocf');
lua_getstack := GetProcAddress(LuaHandle, 'lua_getstack');
lua_getinfo := GetProcAddress(LuaHandle, 'lua_getinfo');
lua_getlocal := GetProcAddress(LuaHandle, 'lua_getlocal');
lua_setlocal := GetProcAddress(LuaHandle, 'lua_setlocal');
lua_getupvalue := GetProcAddress(LuaHandle, 'lua_getupvalue');
lua_setupvalue := GetProcAddress(LuaHandle, 'lua_setupvalue');
lua_upvalueid := GetProcAddress(LuaHandle, 'lua_upvalueid');
lua_upvaluejoin := GetProcAddress(LuaHandle, 'lua_upvaluejoin');
lua_sethook := GetProcAddress(LuaHandle, 'lua_sethook');
lua_gethook := GetProcAddress(LuaHandle, 'lua_gethook');
lua_gethookmask := GetProcAddress(LuaHandle, 'lua_gethookmask');
lua_gethookcount := GetProcAddress(LuaHandle, 'lua_gethookcount');
//LuaLibs
luaopen_base := GetProcAddress(LuaHandle, 'luaopen_base');
luaopen_coroutine := GetProcAddress(LuaHandle, 'luaopen_coroutine');
luaopen_table := GetProcAddress(LuaHandle, 'luaopen_table');
luaopen_io := GetProcAddress(LuaHandle, 'luaopen_io');
luaopen_os := GetProcAddress(LuaHandle, 'luaopen_os');
luaopen_string := GetProcAddress(LuaHandle, 'luaopen_string');
luaopen_utf8 := GetProcAddress(LuaHandle, 'luaopen_utf8');
luaopen_bit32 := GetProcAddress(LuaHandle, 'luaopen_bit32');
luaopen_math := GetProcAddress(LuaHandle, 'luaopen_math');
luaopen_debug := GetProcAddress(LuaHandle, 'luaopen_debug');
luaopen_package := GetProcAddress(LuaHandle, 'luaopen_package');
luaL_openlibs := GetProcAddress(LuaHandle, 'luaL_openlibs');
//LuaXLib
luaL_checkversion_ := GetProcAddress(LuaHandle, 'luaL_checkversion_');
luaL_getmetafield := GetProcAddress(LuaHandle, 'luaL_getmetafield');
luaL_callmeta := GetProcAddress(LuaHandle, 'luaL_callmeta');
luaL_tolstring := GetProcAddress(LuaHandle, 'luaL_tolstring');
luaL_argerror := GetProcAddress(LuaHandle, 'luaL_argerror');
luaL_checklstring := GetProcAddress(LuaHandle, 'luaL_checklstring');
luaL_optlstring := GetProcAddress(LuaHandle, 'luaL_optlstring');
luaL_checknumber := GetProcAddress(LuaHandle, 'luaL_checknumber');
luaL_optnumber := GetProcAddress(LuaHandle, 'luaL_optnumber');
luaL_checkinteger := GetProcAddress(LuaHandle, 'luaL_checkinteger');
luaL_optinteger := GetProcAddress(LuaHandle, 'luaL_optinteger');
luaL_check_stack := GetProcAddress(LuaHandle, 'luaL_check_stack');
luaL_check_type := GetProcAddress(LuaHandle, 'luaL_check_type');
luaL_check_any := GetProcAddress(LuaHandle, 'luaL_check_any');
luaL_newmetatable := GetProcAddress(LuaHandle, 'luaL_newmetatable');
luaL_setmetatable := GetProcAddress(LuaHandle, 'luaL_setmetatable');
luaL_testudata := GetProcAddress(LuaHandle, 'luaL_testudata');
luaL_checkudata := GetProcAddress(LuaHandle, 'luaL_checkudata');
luaL_where := GetProcAddress(LuaHandle, 'luaL_where');
luaL_error := GetProcAddress(LuaHandle, 'luaL_error');
luaL_checkoption := GetProcAddress(LuaHandle, 'luaL_checkoption');
luaL_fileresult := GetProcAddress(LuaHandle, 'luaL_fileresult');
luaL_execresult := GetProcAddress(LuaHandle, 'luaL_execresult');
luaL_ref := GetProcAddress(LuaHandle, 'luaL_ref');
luaL_unref := GetProcAddress(LuaHandle, 'luaL_unref');
luaL_loadfilex := GetProcAddress(LuaHandle, 'luaL_loadfilex');
luaL_loadbufferx := GetProcAddress(LuaHandle, 'luaL_loadbufferx');
luaL_loadstring := GetProcAddress(LuaHandle, 'luaL_loadstring');
luaL_newstate := GetProcAddress(LuaHandle, 'luaL_newstate');
luaL_len := GetProcAddress(LuaHandle, 'luaL_len');
luaL_gsub := GetProcAddress(LuaHandle, 'luaL_gsub');
luaL_setfuncs := GetProcAddress(LuaHandle, 'luaL_setfuncs');
luaL_getsubtable := GetProcAddress(LuaHandle, 'luaL_getsubtable');
luaL_traceback := GetProcAddress(LuaHandle, 'luaL_traceback');
luaL_requiref := GetProcAddress(LuaHandle, 'luaL_requiref');
end;
end;
function loadLua: boolean;
begin
if LuaHandle = INVALID_MODULE_HANDLE then
Result := LoadLuaFrom(LUA_NAME)
else
Result := True;
end;
function loadLuaFrom(FileName: string): boolean;
begin
ClearLuaProc;
LuaHandle := OpenLib(PChar(FileName));
if LuaHandle <> INVALID_MODULE_HANDLE then
begin
LoadLuaProc;
Result := True;
end
else
Result := False;
end;
procedure unLoadLua;
begin
if LuaHandle <> INVALID_MODULE_HANDLE then
FreeLibrary(LuaHandle);
LuaHandle := INVALID_MODULE_HANDLE;
ClearLuaProc;
end;
function isLuaLoaded: boolean;
begin
Result := LuaHandle <> INVALID_MODULE_HANDLE;
end;
//Lua
//lua_open is depracted this is a replacement
function lua_open: Plua_State;
begin
Result := luaL_newstate;
end;
//pseudo-indices
function lua_upvalueindex(I: integer): integer;
begin
Result := LUA_REGISTRYINDEX - i;
end;
//'load' and 'call' functions (load and run Lua code)
procedure lua_call(L: Plua_State; n: integer; r: integer);
begin
lua_callk(L, n, r, 0, nil);
end;
function lua_pcall(L: Plua_State; n: integer; r: integer; f: integer): integer;
begin
Result := lua_pcallk(L, n, r, f, 0, nil);
end;
//coroutine functions
function lua_yield(L: Plua_State; n: integer): integer;
begin
Result := lua_yieldk(L, n, 0, nil);
end;
//some useful macros
function lua_getextraspace(L: Plua_State): Pointer;
const
LUA_EXTRASPACE = sizeof(Pointer);
begin
Result := L - LUA_EXTRASPACE; //hmm how does this magic work in c
end;
function lua_tonumber(L: Plua_State; i: integer): lua_Number;
begin
Result := lua_tonumberx(L, i, nil);
end;
function lua_tointeger(L: Plua_State; i: integer): lua_Integer;
begin
Result := lua_tointegerx(L, i, nil);
end;
procedure lua_pop(L: Plua_State; n: integer);
begin
lua_settop(L, -n - 1);
end;
procedure lua_newtable(L: Plua_State);
begin
lua_createtable(L, 0, 0);
end;
procedure lua_register(L: Plua_State; const n: PChar; f: lua_CFunction);
begin
lua_pushcfunction(L, f);
lua_setglobal(L, n);
end;
procedure lua_pushcfunction(L: Plua_State; f: lua_CFunction);
begin
lua_pushcclosure(L, f, 0);
end;
function lua_isfunction(L: Plua_State; n: integer): boolean;
begin