delphi调用LUA函数来处理一些逻辑

替同事做了个洛奇英雄传自动染色程序,关于屏幕取色的.因为里面他对颜色的要求比较复杂,改动也比较大,于是我让他把逻辑写在 lua 脚本里面.

[delphi] view plain copy

uses LUA, LUALIB;

[delphi] view plain copy

function lua_CheckColor(r,g,b:Integer):Boolean;

var

Lua : TLua;

begin

Lua := TLua.Create;

luaopen_debug(LuaInstance); //如果要使用debug库

// luaopen_io(LuaInstance);

luaopen_math(LuaInstance);// 如果要使用math库 不然就会attempt to index global 'math' (a nil value)

luaopen_os(LuaInstance);

// luaopen_package(LuaInstance);

luaopen_string(LuaInstance);

luaopen_table(LuaInstance);

Lua.DoFile('lua_GetColor.lua');

lua_getglobal(Lua.LuaInstance,'nogi_GetColor');

lua_pushnumber(Lua.LuaInstance, r); //将脚本中add函数使用的参数压栈

lua_pushnumber(Lua.LuaInstance, g); //将脚本中add函数使用的参数压栈

lua_pushnumber(Lua.LuaInstance, b); //将脚本中add函数使用的参数压栈

lua_pcall(Lua.LuaInstance, 3, 1,0) ;

Result := (lua_toInteger(Lua.LuaInstance,-1) = 1);

Lua.Free;

end;

LUA 里面的内容是这样的

[delphi] view plain copy

function nogi_GetColor(nR,nG,nB)

if nR <= 25 and nG <= 25 and nB <= 25 then -- 取出25以下黑色

return 1;

end;

return 0;

end

附上我这里带的 LUA.PAS 和 LUALIB.PAS

lua.pas

[delphi] view plain copy

{

/**

* @package Delphi Lua

* @copyright Copyright (c) 2009 Dennis D. Spreen (http://www.spreendigital.de/blog)

* @license http://opensource.org/licenses/gpl-license.php GNU Public License

* @author Dennis D. Spreen <dennis@spreendigital.de>

* @version 1.3

* @revision $Id: Lua.pas 102 2009-09-30 11:39:41Z dennis.spreen $

*/

History

1.3 DS Improved Callback, now uses pointer instead of object index

Modified RegisterFunctions to allow methods from other class

to be registered, moved object table into TLua class

1.2 DS Added example on how to extend lua with a delphi dll

1.1 DS Improved global object table, this optimizes the delphi

function calls

1.0 DS Initial Release

Copyright 2009 Dennis D. Spreen (email : dennis@spreendigital.de)

This program is free software; you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation; either version 2 of the License, or

(at your option) any later version.

This program is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

GNU General Public License for more details.

You should have received a copy of the GNU General Public License

along with this program; if not, write to the Free Software

Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

}

unit Lua;

interface

uses

Classes,

LuaLib;

type

TLuaState = Lua_State;

TLua = class(TObject)

private

fAutoRegister: Boolean;

CallbackList: TList; // internal callback list

public

LuaInstance: TLuaState; // Lua instance

constructor Create(AutoRegister: Boolean = True); overload; virtual;

destructor Destroy; override;

function DoFile(Filename: String): Integer; virtual;// load file and execute

procedure RegisterFunction(FuncName: AnsiString; MethodName: AnsiString = ''; Obj: TObject = NIL); virtual; //register function

procedure AutoRegisterFunctions(Obj: TObject); // register all published functions

procedure UnregisterFunctions(Obj: TObject); // unregister all object functions

end;

implementation

type

TProc = function(L: TLuaState): Integer of object; // Lua Function

TCallback = class

Routine: TMethod; // Code and Data for the method

Exec: TProc; // Resulting execution function

end;

//

// This function is called by Lua, it extracts the object by

// pointer to the objects method by name, which is then called.

//

// @param Lua_State L Pointer to Lua instance

// @return Integer Number of result arguments on stack

//

function LuaCallBack(L: Lua_State): Integer; cdecl;

var

CallBack: TCallBack; // The Object stored in the Object Table

begin

// Retrieve first Closure Value (=Object Pointer)

CallBack := lua_topointer(L, lua_upvalueindex(1));

// Execute only if Object is valid

if (assigned(CallBack) and assigned(CallBack.Exec)) then

Result := CallBack.Exec(L)

else

Result := 0;

end;

{ TLua }

//

// Create a new Lua instance and optionally create Lua functions

//

// @param Boolean AutoRegister (optional)

// @return TLua Lua Instance

//

constructor TLua.Create(AutoRegister: Boolean = True);

begin

inherited Create;

// Load Lua Lib if not already done

if (not LuaLibLoaded) then

LoadLuaLib;

// Open Library

LuaInstance := Lua_Open();

luaopen_base(LuaInstance);

fAutoRegister := AutoRegister;

// Create Object List on initialization

CallBackList := TList.Create;

// if set then register published functions

if (AutoRegister) then

AutoRegisterFunctions(self);

end;

//

// Dispose Lua instance

//

destructor TLua.Destroy;

begin

// Unregister all functions if previously autoregistered

if (fAutoRegister) then

UnregisterFunctions(Self);

// dispose Object List on finalization

CallBackList.Free;

// Close instance

Lua_Close(LuaInstance);

inherited;

end;

//

// Wrapper for Lua File load and Execution

//

// @param String Filename Lua Script file name

// @return Integer

//

function TLua.DoFile(Filename: String): Integer;

begin

Result := lual_dofile(LuaInstance, PAnsiChar(AnsiString(Filename)));

end;

//

// Register a new Lua Function and map it to the Objects method name

//

// @param AnsiString FuncName Lua Function Name

// @param AnsiString MethodName (optional) Objects Method name

//

procedure TLua.RegisterFunction(FuncName: AnsiString; MethodName: AnsiString = ''; Obj: TObject = NIL);

var

CallBack: TCallBack; // Callback Object

begin

// if method name not specified use Lua function name

if (MethodName = '') then

MethodName := FuncName;

// if not object specified use this object

if (Obj = NIL) then

Obj := Self;

// Add Callback Object to the Object Index

CallBack := TCallBack.Create;

CallBack.Routine.Data := Obj;

CallBack.Routine.Code := Obj.MethodAddress(String(MethodName));

CallBack.Exec := TProc(CallBack.Routine);

CallbackList.Add(CallBack);

// prepare Closure value (Method Name)

lua_pushstring(LuaInstance, PAnsiChar(FuncName));

// prepare Closure value (CallBack Object Pointer)

lua_pushlightuserdata(LuaInstance, CallBack);

// set new Lua function with Closure value

lua_pushcclosure(LuaInstance, LuaCallBack, 1);

lua_settable(LuaInstance, LUA_GLOBALSINDEX);

end;

//

// UnRegister all new Lua Function

//

// @param TObject Object Object with prev registered lua functions

//

procedure TLua.UnregisterFunctions(Obj: TObject);

var

I: Integer;

CallBack: TCallBack;

begin

// remove obj from object list

for I := CallBackList.Count downto 1 do

begin

CallBack := CallBackList[I-1];

if (assigned(CallBack)) and (CallBack.Routine.Data = Obj) then

begin

CallBack.Free;

CallBackList.Items[I-1] := NIL;

CallBackList.Delete(I-1);

end;

end;

end;

//

// Register all published methods as Lua Functions

//

procedure TLua.AutoRegisterFunctions(Obj: TObject);

type

PPointer = ^Pointer;

PMethodRec = ^TMethodRec;

TMethodRec = packed record

wSize: Word;

pCode: Pointer;

sName: ShortString;

end;

var

MethodTable: PAnsiChar;

MethodRec: PMethodRec;

wCount: Word;

nMethod: Integer;

begin

// Get a pointer to the class's published method table

MethodTable := PAnsiChar(Pointer(PAnsiChar(Obj.ClassType) + vmtMethodTable)^);

if (MethodTable <> Nil) then

begin

// Get the count of the methods in the table

Move(MethodTable^, wCount, 2);

// Position the MethodRec pointer at the first method in the table

// (skip over the 2-byte method count)

MethodRec := PMethodRec(MethodTable + 2);

// Iterate through all the published methods of this class

for nMethod := 0 to wCount - 1 do

begin

// Add the method name to the lua functions

RegisterFunction(MethodRec.sName, MethodRec.sName, Obj);

// Skip to the next method

MethodRec := PMethodRec(PAnsiChar(MethodRec) + MethodRec.wSize);

end;

end;

end;

end.

lualib.pas

[delphi] view plain copy

(******************************************************************************

* Original copyright for the lua source and headers:

* 1994-2004 Tecgraf, PUC-Rio.

* www.lua.org.

*

* Copyright for the Delphi adaptation:

* 2005 Rolf Meyerhoff

* www.matrix44.de

*

* Copyright for the Lua 5.1 adaptation:

* 2007 Marco Antonio Abreu

* www.marcoabreu.eti.br

*

* All rights reserved.

*

* Permission is hereby granted, free of charge, to any person obtaining

* a copy of this software and associated documentation files (the

* "Software"), to deal in the Software without restriction, including

* without limitation the rights to use, copy, modify, merge, publish,

* distribute, sublicense, and/or sell copies of the Software, and to

* permit persons to whom the Software is furnished to do so, subject to

* the following conditions:

*

* The above copyright notice and this permission notice shall be

* included in all copies or substantial portions of the Software.

*

* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.

* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY

* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,

* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE

* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

******************************************************************************)

unit LuaLib;

interface

const

LUA_VERSION = 'Lua 5.1';

LUA_RELEASE = 'Lua 5.1.2';

LUA_COPYRIGHT = 'Copyright (C) 1994-2004 Tecgraf, PUC-Rio';

LUA_AUTHORS = 'R. Ierusalimschy, L. H. de Figueiredo & W. Celes';

LUA_PASCAL_51_AUTHOR = 'Marco Antonio Abreu';

LUA_PASCAL_51_COPYRIGHT = 'Copyright (C) 2007 Marco Antonio Abreu';

(* mark for precompiled code (`<esc>Lua') *)

LUA_SIGNATURE = #27'Lua';

(* option for multiple returns in `lua_pcall' and `lua_call' *)

LUA_MULTRET = -1;

(*

** pseudo-indices

*)

LUA_REGISTRYINDEX = -10000;

LUA_ENVIRONINDEX = -10001;

LUA_GLOBALSINDEX = -10002;

(* thread status; 0 is OK *)

LUA_TRD_YIELD = 1;

LUA_ERRRUN = 2;

LUA_ERRSYNTAX = 3;

LUA_ERRMEM = 4;

LUA_ERRERR = 5;

(* extra error code for `luaL_load' *)

LUA_ERRFILE = LUA_ERRERR + 1;

(*

** basic types

*)

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;

(* minimum Lua stack available to a C function *)

LUA_MINSTACK = 20;

(*

** 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;

(*

** {======================================================================

** Debug API

** =======================================================================

*)

(*

** Event codes

*)

LUA_HOOKCALL = 0;

LUA_HOOKRET = 1;

LUA_HOOKLINE = 2;

LUA_HOOKCOUNT = 3;

LUA_HOOKTAILRET = 4;

(*

** Event masks

*)

LUA_MASKCALL = (1 shl LUA_HOOKCALL);

LUA_MASKRET = (1 shl LUA_HOOKRET);

LUA_MASKLINE = (1 shl LUA_HOOKLINE);

LUA_MASKCOUNT = (1 shl LUA_HOOKCOUNT);

(*

** {======================================================================

** useful definitions for Lua kernel and libraries

** =======================================================================

*)

(*

@@ LUA_NUMBER_SCAN is the format for reading numbers.

@@ LUA_NUMBER_FMT is the format for writing numbers.

@@ lua_number2str converts a number to a string.

@@ LUAI_MAXNUMBER2STR is maximum size of previous conversion.

@@ lua_str2number converts a string to a number.

*)

LUA_NUMBER_SCAN = '%lf';

LUA_NUMBER_FMT = '%.14g';

LUAI_MAXNUMBER2STR = 32; (* 16 digits, sign, point, and \0 *)

(* pre-defined references *)

LUA_NOREF = -2;

LUA_REFNIL = -1;

LUA_IDSIZE = 60;

(*

** package names

*)

LUA_COLIBNAME = 'coroutine';

LUA_TABLIBNAME = 'table';

LUA_IOLIBNAME = 'io';

LUA_OSLIBNAME = 'os';

LUA_STRLIBNAME = 'string';

LUA_MATHLIBNAME = 'math';

LUA_DBLIBNAME = 'debug';

LUA_LOADLIBNAME = 'package';

(*

** {======================================================

** Generic Buffer manipulation

** =======================================================

*)

BUFSIZ = 512; (* From stdio.h *)

LUAL_BUFFERSIZE = BUFSIZ;

type

lua_State = type Pointer;

lua_CFunction = function(L: lua_State): Integer; cdecl;

(*

** functions that read/write blocks when loading/dumping Lua chunks

*)

lua_Reader = function(L: lua_State; data: Pointer; var size: Cardinal): PAnsiChar; cdecl;

lua_Writer = function(L: lua_State; p: Pointer; sz: Cardinal; ud: Pointer): Integer; cdecl;

(*

** prototype for memory-allocation functions

*)

lua_Alloc = function(ud, ptr: Pointer; osize, nsize: Cardinal): Pointer; cdecl;

(* type of numbers in Lua *)

lua_Number = type double;

(* type for integer functions *)

lua_Integer = type integer;

lua_Debug = packed record

event: Integer;

name: PAnsiChar; (* (n) *)

namewhat: PAnsiChar; (* (n) `global', `local', `field', `method' *)

what: PAnsiChar; (* (S) `Lua', `C', `main', `tail' *)

source: PAnsiChar; (* (S) *)

currentline: Integer; (* (l) *)

nups: Integer; (* (u) number of upvalues *)

linedefined: Integer; (* (S) *)

lastlinedefine: Integer; (* (S) *)

short_src: array[0..LUA_IDSIZE - 1] of AnsiChar; (* (S) *)

(* private part *)

i_ci: Integer; (* active function *)

end;

(* Functions to be called by the debuger in specific events *)

lua_Hook = procedure(L: lua_State; var ar: lua_Debug); cdecl;

(* Lua Record *)

PluaL_reg = ^luaL_reg;

luaL_reg = packed record

name: PAnsiChar;

func: lua_CFunction;

end;

(*

** {======================================================

** Generic Buffer manipulation

** =======================================================

*)

luaL_Buffer = packed record

p: PAnsiChar; (* current position in buffer *)

lvl: Integer; (* number of strings in the stack (level) *)

L: lua_State;

buffer: array[0..LUAL_BUFFERSIZE - 1] of AnsiChar;

end;

var

(*

** state manipulation

*)

lua_newstate: function(f: lua_Alloc; ud: Pointer): lua_State; cdecl;

lua_close: procedure(L: lua_State); cdecl;

lua_newthread: function(L: lua_State): lua_State; cdecl;

lua_atpanic: function(L: lua_State; panicf: lua_CFunction): lua_CFunction; cdecl;

(*

** basic stack manipulation

*)

lua_gettop: function(L: lua_State): Integer; cdecl;

lua_settop: procedure(L: lua_State; idx: Integer); cdecl;

lua_pushvalue: procedure(L: lua_State; idx: Integer); cdecl;

lua_remove: procedure(L: lua_State; idx: Integer); cdecl;

lua_insert: procedure(L: lua_State; idx: Integer); cdecl;

lua_replace: procedure(L: lua_State; idx: Integer); cdecl;

lua_checkstack: function(L: lua_State; extra: Integer): LongBool; cdecl;

lua_xmove: procedure(from, dest: lua_State; n: Integer); cdecl;

(*

** access functions (stack -> C/Pascal)

*)

lua_isnumber: function(L: lua_State; idx: Integer): LongBool; cdecl;

lua_isstring: function(L: lua_State; idx: Integer): LongBool; cdecl;

lua_iscfunction: function(L: lua_State; idx: Integer): LongBool; cdecl;

lua_isuserdata: function(L: lua_State; idx: Integer): LongBool; cdecl;

lua_type: function(L: lua_State; idx: Integer): Integer; cdecl;

lua_typename: function(L: lua_State; tp: Integer): PAnsiChar; cdecl;

lua_equal: function(L: lua_State; idx1, idx2: Integer): LongBool; cdecl;

lua_rawequal: function(L: lua_State; idx1, idx2: Integer): LongBool; cdecl;

lua_lessthan: function(L: lua_State; idx1, idx2: Integer): LongBool; cdecl;

lua_tonumber: function(L: lua_State; idx: Integer): lua_Number; cdecl;

lua_tointeger: function(L: lua_State; idx: Integer): lua_Integer; cdecl;

lua_toboolean: function(L: lua_State; idx: Integer): LongBool; cdecl;

lua_tolstring: function(L: lua_State; idx: Integer; var len: Cardinal): PAnsiChar; cdecl;

lua_objlen: function(L: lua_State; idx: Integer): Cardinal; cdecl;

lua_tocfunction: function(L: lua_State; idx: Integer): lua_CFunction; cdecl;

lua_touserdata: function(L: lua_State; idx: Integer): Pointer; cdecl;

lua_tothread: function(L: lua_State; idx: Integer): lua_State; cdecl;

lua_topointer: function(L: lua_State; idx: Integer): Pointer; cdecl;

(*

** push functions (C/Pascal -> stack)

*)

lua_pushnil: procedure(L: lua_State); cdecl;

lua_pushnumber: procedure(L: lua_State; n: lua_Number); cdecl;

lua_pushinteger: procedure(L: lua_State; n: lua_Integer); cdecl;

lua_pushlstring: procedure(L: lua_State; s: PAnsiChar; len: Cardinal); cdecl;

lua_pushstring: procedure(L: lua_State; s: PAnsiChar); cdecl;

lua_pushvfstring: function(L: lua_State; fmt, argp: PAnsiChar): PAnsiChar; cdecl;

lua_pushfstring: function(L: lua_State; fmt: PAnsiChar; args: array of const): PAnsiChar; cdecl;

lua_pushcclosure: procedure(L: lua_State; fn: lua_CFunction; n: Integer); cdecl;

lua_pushboolean: procedure(L: lua_State; b: LongBool); cdecl;

lua_pushlightuserdata: procedure(L: lua_State; p: Pointer); cdecl;

lua_pushthread: function(L: lua_State): Integer; cdecl;

(*

** get functions (Lua -> stack)

*)

lua_gettable: procedure(L: lua_State; idx: Integer); cdecl;

lua_getfield: procedure(L: lua_State; idx: Integer; k: PAnsiChar); cdecl;

lua_rawget: procedure(L: lua_State; idx: Integer); cdecl;

lua_rawgeti: procedure(L: lua_State; idx, n: Integer); cdecl;

lua_createtable: procedure(L: lua_State; narr, nrec: Integer); cdecl;

lua_newuserdata: function(L: lua_State; size: Cardinal): Pointer; cdecl;

lua_getmetatable: function(L: lua_State; idx: Integer): LongBool; cdecl;

lua_getfenv: procedure(L: lua_State; idx: Integer); cdecl;

(*

** set functions (stack -> Lua)

*)

lua_settable: procedure(L: lua_State; idx: Integer); cdecl;

lua_setfield: procedure(L: lua_State; idx: Integer; k: PAnsiChar ); cdecl;

lua_rawset: procedure(L: lua_State; idx: Integer); cdecl;

lua_rawseti: procedure(L: lua_State; idx, n: Integer); cdecl;

lua_setmetatable: function(L: lua_State; idx: Integer): LongBool; cdecl;

lua_setfenv: function(L: lua_State; idx: Integer): LongBool; cdecl;

(*

** `load' and `call' functions (load and run Lua code)

*)

lua_call: procedure(L: lua_State; nargs, nresults: Integer); cdecl;

lua_pcall: function(L: lua_State; nargs, nresults, errfunc: Integer): Integer; cdecl;

lua_cpcall: function(L: lua_State; func: lua_CFunction; ud: Pointer): Integer; cdecl;

lua_load: function(L: lua_State; reader: lua_Reader; data: Pointer; chunkname: PAnsiChar): Integer; cdecl;

lua_dump: function(L: lua_State; writer: lua_Writer; data: Pointer): Integer; cdecl;

(*

** coroutine functions

*)

lua_yield: function(L: lua_State; nresults: Integer): Integer; cdecl;

lua_resume: function(L: lua_State; narg: Integer): Integer; cdecl;

lua_status: function(L: lua_State): Integer; cdecl;

(*

** garbage-collection functions

*)

lua_gc: function(L: lua_State; what, data: Integer): Integer; cdecl;

(*

** miscellaneous functions

*)

lua_error: function(L: lua_State): Integer; cdecl;

lua_next: function(L: lua_State; idx: Integer): Integer; cdecl;

lua_concat: procedure(L: lua_State; n: Integer); cdecl;

lua_getallocf: function(L: lua_State; ud: Pointer): lua_Alloc; cdecl;

lua_setallocf: procedure(L: lua_State; f: lua_Alloc; ud: Pointer); cdecl;

(*

** {======================================================================

** Debug API

** =======================================================================

*)

lua_getstack: function(L: lua_State; level: Integer; var ar: lua_Debug): Integer; cdecl;

lua_getinfo: function(L: lua_State; what: PAnsiChar; var ar: lua_Debug): Integer; cdecl;

lua_getlocal: function(L: lua_State; var ar: lua_Debug; n: Integer): PAnsiChar; cdecl;

lua_setlocal: function(L: lua_State; var ar: lua_Debug; n: Integer): PAnsiChar; cdecl;

lua_getupvalue: function(L: lua_State; funcindex, n: Integer): PAnsiChar; cdecl;

lua_setupvalue: function(L: lua_State; funcindex, n: Integer): PAnsiChar; cdecl;

lua_sethook: function(L: lua_State; func: lua_Hook; mask, count: Integer): Integer; cdecl;

lua_gethook: function(L: lua_State): lua_Hook; cdecl;

lua_gethookmask: function(L: lua_State): Integer; cdecl;

lua_gethookcount: function(L: lua_State): Integer; cdecl;

(* lua libraries *)

luaopen_base: function(L: lua_State): Integer; cdecl;

luaopen_debug: function(L: lua_State): Integer; cdecl;

luaopen_io: function(L: lua_State): Integer; cdecl;

luaopen_math: function(L: lua_State): Integer; cdecl;

luaopen_os: function(L: lua_State): Integer; cdecl;

luaopen_package: function(L: lua_State): Integer; cdecl;

luaopen_string: function(L: lua_State): Integer; cdecl;

luaopen_table: function(L: lua_State): Integer; cdecl;

(* open all previous libraries *)

luaL_openlibs: procedure(L: lua_State); cdecl;

luaL_register: procedure(L: lua_State; libname: PAnsiChar; lr: PluaL_reg); cdecl;

luaL_getmetafield: function(L: lua_State; obj: Integer; e: PAnsiChar): Integer; cdecl;

luaL_callmeta: function(L: lua_State; obj: Integer; e: PAnsiChar): Integer; cdecl;

luaL_typerror: function(L: lua_State; narg: Integer; tname: PAnsiChar): Integer; cdecl;

luaL_argerror: function(L: lua_State; narg: Integer; extramsg: PAnsiChar): Integer; cdecl;

luaL_checklstring: function(L: lua_State; narg: Integer; var len: Cardinal): PAnsiChar; cdecl;

luaL_optlstring: function(L: lua_State; narg: Integer; d: PAnsiChar; var len: Cardinal): PAnsiChar; cdecl;

luaL_checknumber: function(L: lua_State; narg: Integer): lua_Number; cdecl;

luaL_optnumber: function(L: lua_State; narg: Integer; d: lua_Number): lua_Number; cdecl;

luaL_checkinteger: function(L: lua_State; narg: Integer): lua_Integer; cdecl;

luaL_optinteger: function(L: lua_State; narg: Integer; d: lua_Integer): lua_Integer; cdecl;

luaL_checkstack: procedure(L: lua_State; sz: Integer; msg: PAnsiChar); cdecl;

luaL_checktype: procedure(L: lua_State; narg, t: Integer); cdecl;

luaL_checkany: procedure(L: lua_State; narg: Integer); cdecl;

luaL_newmetatable: function(L: lua_State; tname: PAnsiChar): Integer; cdecl;

luaL_checkudata: function(L: lua_State; narg: Integer; tname: PAnsiChar): Pointer; cdecl;

luaL_checkoption: function(L: lua_State; narg: Integer; def: PAnsiChar; lst: array of PAnsiChar): Integer; cdecl;

luaL_where: procedure(L: lua_State; lvl: Integer); cdecl;

luaL_error: function(L: lua_State; fmt: PAnsiChar; args: array of const): Integer; cdecl;

luaL_ref: function(L: lua_State; t: Integer): Integer; cdecl;

luaL_unref: procedure(L: lua_State; t, ref: Integer); cdecl;

{$ifdef LUA_COMPAT_GETN}

luaL_getn: function(L: lua_State; t: Integer): Integer; cdecl;

luaL_setn: procedure(L: lua_State; t, n: Integer); cdecl;

{$endif}

luaL_loadfile: function(L: lua_State; filename: PAnsiChar): Integer; cdecl;

luaL_loadbuffer: function(L: lua_State; buff: PAnsiChar; sz: Cardinal; name: PAnsiChar): Integer; cdecl;

luaL_loadstring: function(L: lua_State; s: PAnsiChar): Integer; cdecl;

luaL_newstate: function(): lua_State; cdecl;

luaL_gsub: function(L: lua_State; s, p, r: PAnsiChar): PAnsiChar; cdecl;

luaL_findtable: function(L: lua_State; idx: Integer; fname: PAnsiChar; szhint: Integer): PAnsiChar; cdecl;

luaL_buffinit: procedure(L: lua_State; var B: luaL_Buffer); cdecl;

luaL_prepbuffer: function(var B: luaL_Buffer): PAnsiChar; cdecl;

luaL_addlstring: procedure(var B: luaL_Buffer; s: PAnsiChar; l: Cardinal); cdecl;

luaL_addstring: procedure(var B: luaL_Buffer; s: PAnsiChar); cdecl;

luaL_addvalue: procedure(var B: luaL_Buffer); cdecl;

luaL_pushresult: procedure(var B: luaL_Buffer); cdecl;

(*

** ===============================================================

** some useful macros

** ===============================================================

*)

{$ifndef LUA_COMPAT_GETN}

function luaL_getn(L: lua_State; t: Integer): Integer;

procedure luaL_setn(L: lua_State; t, n: Integer);

{$endif}

(* pseudo-indices *)

function lua_upvalueindex(i: Integer): Integer;

(* to help testing the libraries *)

procedure lua_assert(c: Boolean);

function lua_number2str(s: Lua_Number; n: Integer): String;

function lua_str2number(s: String; p: integer): Lua_Number;

(* argument and parameters checks *)

function luaL_argcheck(L: lua_State; cond: Boolean; narg: Integer; extramsg: PAnsiChar): Integer;

function luaL_checkstring(L: lua_State; narg: Integer): PAnsiChar;

function luaL_optstring(L: lua_State; narg: Integer; d: PAnsiChar): PAnsiChar;

function luaL_checkint(L: lua_State; narg: Integer): Integer;

function luaL_optint(L: lua_State; narg, d: Integer): Integer;

function luaL_checklong(L: lua_State; narg: Integer): LongInt;

function luaL_optlong(L: lua_State; narg: Integer; d: LongInt): LongInt;

function luaL_typename(L: lua_State; idx: Integer): PAnsiChar;

function luaL_dofile(L: lua_State; filename: PAnsiChar): Integer;

function luaL_dostring(L: lua_State; str: PAnsiChar): Integer;

procedure luaL_getmetatable(L: lua_State; tname: PAnsiChar);

(* Generic Buffer manipulation *)

procedure luaL_addchar(var B: luaL_Buffer; c: AnsiChar);

procedure luaL_putchar(var B: luaL_Buffer; c: AnsiChar);

procedure luaL_addsize(var B: luaL_Buffer; n: Cardinal);

function luaL_check_lstr(L: lua_State; numArg: Integer; var ls: Cardinal): PAnsiChar;

function luaL_opt_lstr(L: lua_State; numArg: Integer; def: PAnsiChar; var ls: Cardinal): PAnsiChar;

function luaL_check_number(L: lua_State; numArg: Integer): lua_Number;

function luaL_opt_number(L: lua_State; nArg: Integer; def: lua_Number): lua_Number;

function luaL_arg_check(L: lua_State; cond: Boolean; numarg: Integer; extramsg: PAnsiChar): Integer;

function luaL_check_string(L: lua_State; n: Integer): PAnsiChar;

function luaL_opt_string(L: lua_State; n: Integer; d: PAnsiChar): PAnsiChar;

function luaL_check_int(L: lua_State; n: Integer): Integer;

function luaL_check_long(L: lua_State; n: LongInt): LongInt;

function luaL_opt_int(L: lua_State; n, d: Integer): Integer;

function luaL_opt_long(L: lua_State; n: Integer; d: LongInt): LongInt;

procedure lua_pop(L: lua_State; n: Integer);

procedure lua_newtable(L: lua_State);

procedure lua_register(L: lua_state; name: PAnsiChar; f: lua_CFunction);

procedure lua_pushcfunction(L: lua_State; f: lua_CFunction);

function lua_strlen(L: lua_State; i: Integer): Cardinal;

function lua_isfunction(L: lua_State; idx: Integer): Boolean;

function lua_istable(L: lua_State; idx: Integer): Boolean;

function lua_islightuserdata(L: lua_State; idx: Integer): Boolean;

function lua_isnil(L: lua_State; idx: Integer): Boolean;

function lua_isboolean(L: lua_State; idx: Integer): Boolean;

function lua_isthread(L: lua_State; idx: Integer): Boolean;

function lua_isnone(L: lua_State; idx: Integer): Boolean;

function lua_isnoneornil(L: lua_State; idx: Integer): Boolean;

procedure lua_pushliteral(L: lua_State; s: PAnsiChar);

procedure lua_setglobal(L: lua_State; name: PAnsiChar);

procedure lua_getglobal(L: lua_State; name: PAnsiChar);

function lua_tostring(L: lua_State; idx: Integer): PAnsiChar;

(*

** compatibility macros and functions

*)

function lua_open(): lua_State;

procedure lua_getregistry(L: lua_State);

function lua_getgccount(L: lua_State): Integer;

(* compatibility with ref system *)

function lua_ref(L: lua_State; lock: Boolean): Integer;

procedure lua_unref(L: lua_State; ref: Integer);

procedure lua_getref(L: lua_State; ref: Integer);

(*

** Dynamic library manipulation

*)

function GetProcAddr( fHandle: THandle; const methodName: String; bErrorIfNotExists: Boolean = True ): Pointer;

procedure SetLuaLibFileName( newLuaLibFileName: String );

function GetLuaLibFileName(): String;

function LoadLuaLib( newLuaLibFileName: String = '' ): Integer;

procedure FreeLuaLib();

function LuaLibLoaded: Boolean;

implementation

uses

SysUtils, Math,

{$ifdef MSWINDOWS}

Windows

{$endif}

;

var

fLibHandle: Integer = 0;

{$ifdef MSWINDOWS}

fLuaLibFileName: String = 'Lua5.1.dll';

{$endif}

{$ifdef LINUX}

fLuaLibFileName: String = 'liblua.so.5.1';

{$endif}

(*

** Dynamic library manipulation

*)

function GetProcAddr( fHandle: THandle; const methodName: String; bErrorIfNotExists: Boolean = True ): Pointer;

begin

Result := GetProcAddress( fHandle, PAnsiChar( AnsiString(methodName) ) );

if bErrorIfNotExists and ( Result = nil ) then

Raise Exception.Create( 'Cannot load method ' + QuotedStr( methodName ) + ' from dynamic library.' );

end;

procedure SetLuaLibFileName( newLuaLibFileName: String );

begin

fLuaLibFileName := newLuaLibFileName;

end;

function GetLuaLibFileName(): String;

begin

Result := fLuaLibFileName;

end;

function LuaLibLoaded: Boolean;

begin

Result := fLibHandle <> 0;

end;

function LoadLuaLib(newLuaLibFileName: String): Integer;

begin

FreeLuaLib();

if newLuaLibFileName <> '' then

SetLuaLibFileName( newLuaLibFileName );

if not FileExists( GetLuaLibFileName() ) then begin

Result := -1;

exit;

end;

fLibHandle := LoadLibrary(PWideChar( (GetLuaLibFileName() ) ));

if fLibHandle = 0 then begin

Result := -2;

exit;

end;

lua_newstate := GetProcAddr( fLibHandle, 'lua_newstate' );

lua_close := GetProcAddr( fLibHandle, 'lua_close' );

lua_newthread := GetProcAddr( fLibHandle, 'lua_newthread' );

lua_atpanic := GetProcAddr( fLibHandle, 'lua_atpanic' );

lua_gettop := GetProcAddr( fLibHandle, 'lua_gettop' );

lua_settop := GetProcAddr( fLibHandle, 'lua_settop' );

lua_pushvalue := GetProcAddr( fLibHandle, 'lua_pushvalue' );

lua_remove := GetProcAddr( fLibHandle, 'lua_remove' );

lua_insert := GetProcAddr( fLibHandle, 'lua_insert' );

lua_replace := GetProcAddr( fLibHandle, 'lua_replace' );

lua_checkstack := GetProcAddr( fLibHandle, 'lua_checkstack' );

lua_xmove := GetProcAddr( fLibHandle, 'lua_xmove' );

lua_isnumber := GetProcAddr( fLibHandle, 'lua_isnumber' );

lua_isstring := GetProcAddr( fLibHandle, 'lua_isstring' );

lua_iscfunction := GetProcAddr( fLibHandle, 'lua_iscfunction' );

lua_isuserdata := GetProcAddr( fLibHandle, 'lua_isuserdata' );

lua_type := GetProcAddr( fLibHandle, 'lua_type' );

lua_typename := GetProcAddr( fLibHandle, 'lua_typename' );

lua_equal := GetProcAddr( fLibHandle, 'lua_equal' );

lua_rawequal := GetProcAddr( fLibHandle, 'lua_rawequal' );

lua_lessthan := GetProcAddr( fLibHandle, 'lua_lessthan' );

lua_tonumber := GetProcAddr( fLibHandle, 'lua_tonumber' );

lua_tointeger := GetProcAddr( fLibHandle, 'lua_tointeger' );

lua_toboolean := GetProcAddr( fLibHandle, 'lua_toboolean' );

lua_tolstring := GetProcAddr( fLibHandle, 'lua_tolstring' );

lua_objlen := GetProcAddr( fLibHandle, 'lua_objlen' );

lua_tocfunction := GetProcAddr( fLibHandle, 'lua_tocfunction' );

lua_touserdata := GetProcAddr( fLibHandle, 'lua_touserdata' );

lua_tothread := GetProcAddr( fLibHandle, 'lua_tothread' );

lua_topointer := GetProcAddr( fLibHandle, 'lua_topointer' );

lua_pushnil := GetProcAddr( fLibHandle, 'lua_pushnil' );

lua_pushnumber := GetProcAddr( fLibHandle, 'lua_pushnumber' );

lua_pushinteger := GetProcAddr( fLibHandle, 'lua_pushinteger' );

lua_pushlstring := GetProcAddr( fLibHandle, 'lua_pushlstring' );

lua_pushstring := GetProcAddr( fLibHandle, 'lua_pushstring' );

lua_pushvfstring := GetProcAddr( fLibHandle, 'lua_pushvfstring' );

lua_pushfstring := GetProcAddr( fLibHandle, 'lua_pushfstring' );

lua_pushcclosure := GetProcAddr( fLibHandle, 'lua_pushcclosure' );

lua_pushboolean := GetProcAddr( fLibHandle, 'lua_pushboolean' );

lua_pushlightuserdata := GetProcAddr( fLibHandle, 'lua_pushlightuserdata' );

lua_pushthread := GetProcAddr( fLibHandle, 'lua_pushthread' );

lua_gettable := GetProcAddr( fLibHandle, 'lua_gettable' );

lua_getfield := GetProcAddr( fLibHandle, 'lua_getfield' );

lua_rawget := GetProcAddr( fLibHandle, 'lua_rawget' );

lua_rawgeti := GetProcAddr( fLibHandle, 'lua_rawgeti' );

lua_createtable := GetProcAddr( fLibHandle, 'lua_createtable' );

lua_newuserdata := GetProcAddr( fLibHandle, 'lua_newuserdata' );

lua_getmetatable := GetProcAddr( fLibHandle, 'lua_getmetatable' );

lua_getfenv := GetProcAddr( fLibHandle, 'lua_getfenv' );

lua_settable := GetProcAddr( fLibHandle, 'lua_settable' );

lua_setfield := GetProcAddr( fLibHandle, 'lua_setfield' );

lua_rawset := GetProcAddr( fLibHandle, 'lua_rawset' );

lua_rawseti := GetProcAddr( fLibHandle, 'lua_rawseti' );

lua_setmetatable := GetProcAddr( fLibHandle, 'lua_setmetatable' );

lua_setfenv := GetProcAddr( fLibHandle, 'lua_setfenv' );

lua_call := GetProcAddr( fLibHandle, 'lua_call' );

lua_pcall := GetProcAddr( fLibHandle, 'lua_pcall' );

lua_cpcall := GetProcAddr( fLibHandle, 'lua_cpcall' );

lua_load := GetProcAddr( fLibHandle, 'lua_load' );

lua_dump := GetProcAddr( fLibHandle, 'lua_dump' );

lua_yield := GetProcAddr( fLibHandle, 'lua_yield' );

lua_resume := GetProcAddr( fLibHandle, 'lua_resume' );

lua_status := GetProcAddr( fLibHandle, 'lua_status' );

lua_gc := GetProcAddr( fLibHandle, 'lua_gc' );

lua_error := GetProcAddr( fLibHandle, 'lua_error' );

lua_next := GetProcAddr( fLibHandle, 'lua_next' );

lua_concat := GetProcAddr( fLibHandle, 'lua_concat' );

lua_getallocf := GetProcAddr( fLibHandle, 'lua_getallocf' );

lua_setallocf := GetProcAddr( fLibHandle, 'lua_setallocf' );

lua_getstack := GetProcAddr( fLibHandle, 'lua_getstack' );

lua_getinfo := GetProcAddr( fLibHandle, 'lua_getinfo' );

lua_getlocal := GetProcAddr( fLibHandle, 'lua_getlocal' );

lua_setlocal := GetProcAddr( fLibHandle, 'lua_setlocal' );

lua_getupvalue := GetProcAddr( fLibHandle, 'lua_getupvalue' );

lua_setupvalue := GetProcAddr( fLibHandle, 'lua_setupvalue' );

lua_sethook := GetProcAddr( fLibHandle, 'lua_sethook' );

lua_gethook := GetProcAddr( fLibHandle, 'lua_gethook' );

lua_gethookmask := GetProcAddr( fLibHandle, 'lua_gethookmask' );

lua_gethookcount := GetProcAddr( fLibHandle, 'lua_gethookcount' );

luaopen_base := GetProcAddr( fLibHandle, 'luaopen_base' );

luaopen_table := GetProcAddr( fLibHandle, 'luaopen_table' );

luaopen_io := GetProcAddr( fLibHandle, 'luaopen_io' );

luaopen_os := GetProcAddr( fLibHandle, 'luaopen_os' );

luaopen_string := GetProcAddr( fLibHandle, 'luaopen_string' );

luaopen_math := GetProcAddr( fLibHandle, 'luaopen_math' );

luaopen_debug := GetProcAddr( fLibHandle, 'luaopen_debug' );

luaopen_package := GetProcAddr( fLibHandle, 'luaopen_package' );

luaL_openlibs := GetProcAddr( fLibHandle, 'luaL_openlibs' );

luaL_register := GetProcAddr( fLibHandle, 'luaL_register' );

luaL_getmetafield := GetProcAddr( fLibHandle, 'luaL_getmetafield' );

luaL_callmeta := GetProcAddr( fLibHandle, 'luaL_callmeta' );

luaL_typerror := GetProcAddr( fLibHandle, 'luaL_typerror' );

luaL_argerror := GetProcAddr( fLibHandle, 'luaL_argerror' );

luaL_checklstring := GetProcAddr( fLibHandle, 'luaL_checklstring' );

luaL_optlstring := GetProcAddr( fLibHandle, 'luaL_optlstring' );

luaL_checknumber := GetProcAddr( fLibHandle, 'luaL_checknumber' );

luaL_optnumber := GetProcAddr( fLibHandle, 'luaL_optnumber' );

luaL_checkinteger := GetProcAddr( fLibHandle, 'luaL_checkinteger' );

luaL_optinteger := GetProcAddr( fLibHandle, 'luaL_optinteger' );

luaL_checkstack := GetProcAddr( fLibHandle, 'luaL_checkstack' );

luaL_checktype := GetProcAddr( fLibHandle, 'luaL_checktype' );

luaL_checkany := GetProcAddr( fLibHandle, 'luaL_checkany' );

luaL_newmetatable := GetProcAddr( fLibHandle, 'luaL_newmetatable' );

luaL_checkudata := GetProcAddr( fLibHandle, 'luaL_checkudata' );

luaL_where := GetProcAddr( fLibHandle, 'luaL_where' );

luaL_error := GetProcAddr( fLibHandle, 'luaL_error' );

luaL_checkoption := GetProcAddr( fLibHandle, 'luaL_checkoption' );

luaL_ref := GetProcAddr( fLibHandle, 'luaL_ref' );

luaL_unref := GetProcAddr( fLibHandle, 'luaL_unref' );

{$ifdef LUA_COMPAT_GETN}

luaL_getn := GetProcAddr( fLibHandle, 'luaL_getn' );

luaL_setn := GetProcAddr( fLibHandle, 'luaL_setn' );

{$endif}

luaL_loadfile := GetProcAddr( fLibHandle, 'luaL_loadfile' );

luaL_loadbuffer := GetProcAddr( fLibHandle, 'luaL_loadbuffer' );

luaL_loadstring := GetProcAddr( fLibHandle, 'luaL_loadstring' );

luaL_newstate := GetProcAddr( fLibHandle, 'luaL_newstate' );

luaL_gsub := GetProcAddr( fLibHandle, 'luaL_gsub' );

luaL_findtable := GetProcAddr( fLibHandle, 'luaL_findtable' );

luaL_buffinit := GetProcAddr( fLibHandle, 'luaL_buffinit' );

luaL_prepbuffer := GetProcAddr( fLibHandle, 'luaL_prepbuffer' );

luaL_addlstring := GetProcAddr( fLibHandle, 'luaL_addlstring' );

luaL_addstring := GetProcAddr( fLibHandle, 'luaL_addstring' );

luaL_addvalue := GetProcAddr( fLibHandle, 'luaL_addvalue' );

luaL_pushresult := GetProcAddr( fLibHandle, 'luaL_pushresult' );

Result := fLibHandle;

end;

procedure FreeLuaLib();

begin

lua_newstate := nil;

lua_close := nil;

lua_newthread := nil;

lua_atpanic := nil;

lua_gettop := nil;

lua_settop := nil;

lua_pushvalue := nil;

lua_remove := nil;

lua_insert := nil;

lua_replace := nil;

lua_checkstack := nil;

lua_xmove := nil;

lua_isnumber := nil;

lua_isstring := nil;

lua_iscfunction := nil;

lua_isuserdata := nil;

lua_type := nil;

lua_typename := nil;

lua_equal := nil;

lua_rawequal := nil;

lua_lessthan := nil;

lua_tonumber := nil;

lua_tointeger := nil;

lua_toboolean := nil;

lua_tolstring := nil;

lua_objlen := nil;

lua_tocfunction := nil;

lua_touserdata := nil;

lua_tothread := nil;

lua_topointer := 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_gettable := nil;

lua_getfield := nil;

lua_rawget := nil;

lua_rawgeti := nil;

lua_createtable := nil;

lua_newuserdata := nil;

lua_getmetatable := nil;

lua_getfenv := nil;

lua_settable := nil;

lua_setfield := nil;

lua_rawset := nil;

lua_rawseti := nil;

lua_setmetatable := nil;

lua_setfenv := nil;

lua_call := nil;

lua_pcall := nil;

lua_cpcall := nil;

lua_load := nil;

lua_dump := nil;

lua_yield := nil;

lua_resume := nil;

lua_status := nil;

lua_gc := nil;

lua_error := nil;

lua_next := nil;

lua_concat := 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_sethook := nil;

lua_gethook := nil;

lua_gethookmask := nil;

lua_gethookcount := nil;

luaopen_base := nil;

luaopen_table := nil;

luaopen_io := nil;

luaopen_os := nil;

luaopen_string := nil;

luaopen_math := nil;

luaopen_debug := nil;

luaopen_package := nil;

luaL_openlibs := nil;

luaL_register := nil;

luaL_getmetafield := nil;

luaL_callmeta := nil;

luaL_typerror := nil;

luaL_argerror := nil;

luaL_checklstring := nil;

luaL_optlstring := nil;

luaL_checknumber := nil;

luaL_optnumber := nil;

luaL_checkinteger := nil;

luaL_optinteger := nil;

luaL_checkstack := nil;

luaL_checktype := nil;

luaL_checkany := nil;

luaL_newmetatable := nil;

luaL_checkudata := nil;

luaL_where := nil;

luaL_error := nil;

luaL_checkoption := nil;

luaL_ref := nil;

luaL_unref := nil;

{$ifdef LUA_COMPAT_GETN}

luaL_getn := nil;

luaL_setn := nil;

{$endif}

luaL_loadfile := nil;

luaL_loadbuffer := nil;

luaL_loadstring := nil;

luaL_newstate := nil;

luaL_gsub := nil;

luaL_findtable := nil;

luaL_buffinit := nil;

luaL_prepbuffer := nil;

luaL_addlstring := nil;

luaL_addstring := nil;

luaL_addvalue := nil;

luaL_pushresult := nil;

if fLibHandle <> 0 then begin

FreeLibrary( fLibHandle );

fLibHandle := 0;

end;

end;

{$ifndef LUA_COMPAT_GETN}

function luaL_getn(L: lua_State; t: Integer): Integer;

begin

Result := lua_objlen(L, t);

end;

procedure luaL_setn(L: lua_State; t, n: Integer);

begin

end;

{$endif}

function lua_upvalueindex(i: Integer): Integer;

begin

Result := LUA_GLOBALSINDEX - i;

end;

procedure lua_pop(L: lua_State; n: Integer);

begin

lua_settop(L, -(n) - 1);

end;

procedure lua_newtable(L: lua_State);

begin

lua_createtable(L, 0, 0);

end;

function lua_strlen(L: lua_State; i: Integer): Cardinal;

begin

result := lua_objlen(L, i);

end;

procedure lua_register(L: lua_state; name: PAnsiChar; f: lua_CFunction);

begin

lua_pushcfunction(L, f);

lua_setglobal(L, name);

end;

procedure lua_pushcfunction(L: lua_State; f: lua_CFunction);

begin

lua_pushcclosure(L, f, 0);

end;

function lua_isfunction(L: lua_State; idx: Integer): Boolean;

begin

Result := lua_type(L, idx) = LUA_TFUNCTION;

end;

function lua_istable(L: lua_State; idx: Integer): Boolean;

begin

Result := lua_type(L, idx) = LUA_TTABLE;

end;

function lua_islightuserdata(L: lua_State; idx: Integer): Boolean;

begin

Result := lua_type(L, idx) = LUA_TLIGHTUSERDATA;

end;

function lua_isnil(L: lua_State; idx: Integer): Boolean;

begin

Result := lua_type(L, idx) = LUA_TNIL;

end;

function lua_isboolean(L: lua_State; idx: Integer): Boolean;

begin

Result := lua_type(L, idx) = LUA_TBOOLEAN;

end;

function lua_isthread(L: lua_State; idx: Integer): Boolean;

begin

Result := lua_type(L, idx) = LUA_TTHREAD;

end;

function lua_isnone(L: lua_State; idx: Integer): Boolean;

begin

Result := lua_type(L, idx) = LUA_TNONE;

end;

function lua_isnoneornil(L: lua_State; idx: Integer): Boolean;

begin

Result := lua_type(L, idx) <= 0;

end;

procedure lua_pushliteral(L: lua_State; s: PAnsiChar);

begin

lua_pushlstring(L, s, StrLen(s));

end;

procedure lua_setglobal(L: lua_State; name: PAnsiChar);

begin

lua_setfield(L, LUA_GLOBALSINDEX, name);

end;

procedure lua_getglobal(L: lua_State; name: PAnsiChar);

begin

lua_getfield(L, LUA_GLOBALSINDEX, name);

end;

function lua_tostring(L: lua_State; idx: Integer): PAnsiChar;

var

len: Cardinal;

begin

Result := lua_tolstring(L, idx, len);

end;

function lua_getgccount(L: lua_State): Integer;

begin

Result := lua_gc(L, LUA_GCCOUNT, 0);

end;

function lua_open(): lua_State;

begin

Result := luaL_newstate();

end;

procedure lua_getregistry(L: lua_State);

begin

lua_pushvalue(L, LUA_REGISTRYINDEX);

end;

function lua_ref(L: lua_State; lock: Boolean): Integer;

begin

if lock then

Result := luaL_ref(L, LUA_REGISTRYINDEX)

else begin

lua_pushstring(L, 'unlocked references are obsolete');

Result := lua_error(L);

end;

end;

procedure lua_unref(L: lua_State; ref: Integer);

begin

luaL_unref(L, LUA_REGISTRYINDEX, ref);

end;

procedure lua_getref(L: lua_State; ref: Integer);

begin

lua_rawgeti(L, LUA_REGISTRYINDEX, ref);

end;

procedure lua_assert(c: Boolean);

begin

end;

function lua_number2str(s: Lua_Number; n: Integer): String;

begin

Result := FormatFloat( LUA_NUMBER_FMT, RoundTo( s, n ) );

end;

function lua_str2number(s: String; p: integer): Lua_Number;

begin

Result := RoundTo( StrToFloat( s ), p );

end;

function luaL_argcheck(L: lua_State; cond: Boolean; narg: Integer; extramsg: PAnsiChar): Integer;

begin

if cond then

Result := 0

else

Result := luaL_argerror(L, narg, extramsg);

end;

function luaL_checkstring(L: lua_State; narg: Integer): PAnsiChar;

var

ls: Cardinal;

begin

Result := luaL_checklstring(L, narg, ls);

end;

function luaL_optstring(L: lua_State; narg: Integer; d: PAnsiChar): PAnsiChar;

var

ls: Cardinal;

begin

Result := luaL_optlstring(L, narg, d, ls);

end;

function luaL_checkint(L: lua_State; narg: Integer): Integer;

begin

Result := Trunc(luaL_checkinteger(L, narg));

end;

function luaL_optint(L: lua_State; narg, d: Integer): Integer;

begin

Result := Trunc(luaL_optinteger(L, narg, d));

end;

function luaL_checklong(L: lua_State; narg: Integer): LongInt;

begin

Result := Trunc(luaL_checkinteger(L, narg));

end;

function luaL_optlong(L: lua_State; narg: Integer; d: LongInt): LongInt;

begin

Result := Trunc(luaL_optinteger(L, narg, d));

end;

function luaL_typename(L: lua_State; idx: Integer): PAnsiChar;

begin

Result := lua_typename(L, lua_type(L, idx));

end;

function luaL_dofile(L: lua_State; filename: PAnsiChar): Integer;

begin

Result := luaL_loadfile(L, filename);

If Result = 0 Then

Result := lua_pcall(L, 0, LUA_MULTRET, 0);

end;

function luaL_dostring(L: lua_State; str: PAnsiChar): Integer;

begin

Result := luaL_loadstring(L, str);

If Result = 0 Then

Result := lua_pcall(L, 0, LUA_MULTRET, 0);

end;

procedure luaL_getmetatable(L: lua_State; tname: PAnsiChar);

begin

lua_getfield(L, LUA_REGISTRYINDEX, tname);

end;

procedure luaL_addchar(var B: luaL_Buffer; c: AnsiChar);

begin

if Integer(B.p) < Integer(B.buffer + LUAL_BUFFERSIZE) then

luaL_prepbuffer(B);

B.p^ := c;

Inc(B.p);

{ // original C code

#define luaL_addchar(B,c) \

((void)((B)->p < ((B)->buffer+LUAL_BUFFERSIZE) || luaL_prepbuffer(B)), \

(*(B)->p++ = (char)(c)))

}

end;

procedure luaL_putchar(var B: luaL_Buffer; c: AnsiChar);

begin

luaL_addchar(B, c);

end;

procedure luaL_addsize(var B: luaL_Buffer; n: Cardinal);

begin

Inc(B.p, n);

end;

function luaL_check_lstr(L: lua_State; numArg: Integer; var ls: Cardinal): PAnsiChar;

begin

Result := luaL_checklstring(L, numArg, ls);

end;

function luaL_opt_lstr(L: lua_State; numArg: Integer; def: PAnsiChar; var ls: Cardinal): PAnsiChar;

begin

Result := luaL_optlstring(L, numArg, def, ls);

end;

function luaL_check_number(L: lua_State; numArg: Integer): lua_Number;

begin

Result := luaL_checknumber(L, numArg);

end;

function luaL_opt_number(L: lua_State; nArg: Integer; def: lua_Number): lua_Number;

begin

Result := luaL_optnumber(L, nArg, def);

end;

function luaL_arg_check(L: lua_State; cond: Boolean; numarg: Integer; extramsg: PAnsiChar): Integer;

begin

Result := luaL_argcheck(L, cond, numarg, extramsg);

end;

function luaL_check_string(L: lua_State; n: Integer): PAnsiChar;

begin

Result := luaL_checkstring(L, n);

end;

function luaL_opt_string(L: lua_State; n: Integer; d: PAnsiChar): PAnsiChar;

begin

Result := luaL_optstring(L, n, d);

end;

function luaL_check_int(L: lua_State; n: Integer): Integer;

begin

Result := luaL_checkint(L, n);

end;

function luaL_check_long(L: lua_State; n: LongInt): LongInt;

begin

Result := luaL_checklong(L, n);

end;

function luaL_opt_int(L: lua_State; n, d: Integer): Integer;

begin

Result := luaL_optint(L, n, d);

end;

function luaL_opt_long(L: lua_State; n: Integer; d: LongInt): LongInt;

begin

Result := luaL_optlong(L, n, d);

end;

end.
http://blog.csdn.net/warrially/article/details/7534252