use PtrInt to match lua's use of ptrdiff. Needs testing.
{$HINTS OFF}
unit LuaPas;
(*
* A complete Pascal wrapper for Lua 5.1 DLL module.
*
* Created by Geo Massar, 2006
* Distributed as free/open source.
*)
interface
{.$DEFINE LUA_GETHOOK}
{$INCLUDE "config.inc"}
type
size_t = type Cardinal;
Psize_t = ^size_t;
PPointer = ^Pointer;
lua_State = record end;
Plua_State = ^lua_State;
const
LuaLibName = cLuaLibrary;
(*****************************************************************************)
(* luaconfig.h *)
(*****************************************************************************)
(*
** $Id: luaconf.h,v 1.81 2006/02/10 17:44:06 roberto Exp $
** Configuration file for Lua
** See Copyright Notice in lua.h
*)
(*
** {==================================================================
@@ LUA_NUMBER is the type of numbers in Lua.
** CHANGE the following definitions only if you want to build Lua
** with a number type different from double. You may also need to
** change lua_number2int & lua_number2integer.
** ===================================================================
*)
type
LUA_NUMBER_ = type Double; // ending underscore is needed in Pascal
LUA_INTEGER_ = type PtrInt;
(*
@@ 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.
*)
const
LUA_IDSIZE = 60;
(*
@@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system.
*)
const
LUAL_BUFFERSIZE = 1024;
(*
@@ LUA_PROMPT is the default prompt used by stand-alone Lua.
@@ LUA_PROMPT2 is the default continuation prompt used by stand-alone Lua.
** CHANGE them if you want different prompts. (You can also change the
** prompts dynamically, assigning to globals _PROMPT/_PROMPT2.)
*)
const
LUA_PROMPT = '> ';
LUA_PROMPT2 = '>> ';
(*
@@ lua_readline defines how to show a prompt and then read a line from
@* the standard input.
@@ lua_saveline defines how to "save" a read line in a "history".
@@ lua_freeline defines how to free a line read by lua_readline.
** CHANGE them if you want to improve this functionality (e.g., by using
** GNU readline and history facilities).
*)
function lua_readline(L : Plua_State; var b : PChar; p : PChar): Boolean;
procedure lua_saveline(L : Plua_State; idx : LongInt);
procedure lua_freeline(L : Plua_State; b : PChar);
(*
@@ lua_stdin_is_tty detects whether the standard input is a 'tty' (that
@* is, whether we're running lua interactively).
** CHANGE it if you have a better definition for non-POSIX/non-Windows
** systems.
*/
#include <io.h>
#include <stdio.h>
#define lua_stdin_is_tty() _isatty(_fileno(stdin))
*)
const
lua_stdin_is_tty = TRUE;
(*****************************************************************************)
(* lua.h *)
(*****************************************************************************)
(*
** $Id: lua.h,v 1.216 2006/01/10 12:50:13 roberto Exp $
** Lua - An Extensible Extension Language
** Lua.org, PUC-Rio, Brazil (http://www.lua.org)
** See Copyright Notice at the end of this file
*)
const
LUA_VERSION = 'Lua 5.1';
LUA_VERSION_NUM = 501;
LUA_COPYRIGHT = 'Copyright (C) 1994-2006 Tecgraf, PUC-Rio';
LUA_AUTHORS = 'R. Ierusalimschy, L. H. de Figueiredo & W. Celes';
(* 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;
function lua_upvalueindex(idx : LongInt) : LongInt; // a marco
const
(* thread status; 0 is OK *)
LUA_YIELD_ = 1; // Note: the ending underscore is needed in Pascal
LUA_ERRRUN = 2;
LUA_ERRSYNTAX = 3;
LUA_ERRMEM = 4;
LUA_ERRERR = 5;
type
lua_CFunction = function(L : Plua_State) : LongInt; cdecl;
(*
** functions that read/write blocks when loading/dumping Lua chunks
*)
lua_Reader = function (L : Plua_State; ud : Pointer;
sz : Psize_t) : PChar; cdecl;
lua_Writer = function (L : Plua_State; const p : Pointer; sz : size_t;
ud : Pointer) : LongInt; cdecl;
(*
** prototype for memory-allocation functions
*)
lua_Alloc = function (ud, ptr : Pointer;
osize, nsize : size_t) : Pointer; cdecl;
const
(*
** 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;
type
(* type of numbers in Lua *)
lua_Number = LUA_NUMBER_;
(* type for integer functions *)
lua_Integer = LUA_INTEGER_;
(*
** state manipulation
*)
function lua_newstate(f : lua_Alloc; ud : Pointer) : Plua_State;
cdecl; external LuaLibName;
procedure lua_close(L: Plua_State);
cdecl; external LuaLibName;
function lua_newthread(L : Plua_State) : Plua_State;
cdecl; external LuaLibName;
function lua_atpanic(L : Plua_State; panicf : lua_CFunction) : lua_CFunction;
cdecl; external LuaLibName;
(*
** basic stack manipulation
*)
function lua_gettop(L : Plua_State) : LongInt;
cdecl; external LuaLibName;
procedure lua_settop(L : Plua_State; idx : LongInt);
cdecl; external LuaLibName;
procedure lua_pushvalue(L : Plua_State; idx : LongInt);
cdecl; external LuaLibName;
procedure lua_remove(L : Plua_State; idx : LongInt);
cdecl; external LuaLibName;
procedure lua_insert(L : Plua_State; idx : LongInt);
cdecl; external LuaLibName;
procedure lua_replace(L : Plua_State; idx : LongInt);
cdecl; external LuaLibName;
function lua_checkstack(L : Plua_State; sz : LongInt) : LongBool;
cdecl; external LuaLibName;
procedure lua_xmove(src, dest : Plua_State; n : LongInt);
cdecl; external LuaLibName;
(*
** access functions (stack -> C)
*)
function lua_isnumber(L : Plua_State; idx : LongInt) : LongBool;
cdecl; external LuaLibName;
function lua_isstring(L : Plua_State; idx : LongInt) : LongBool;
cdecl; external LuaLibName;
function lua_iscfunction(L : Plua_State; idx : LongInt) : LongBool;
cdecl; external LuaLibName;
function lua_isuserdata(L : Plua_State; idx : LongInt) : LongBool;
cdecl; external LuaLibName;
function lua_type(L : Plua_State; idx : LongInt) : LongInt;
cdecl; external LuaLibName;
function lua_typename(L : Plua_State; tp : LongInt) : PChar;
cdecl; external LuaLibName;
function lua_equal(L : Plua_State; idx1, idx2 : LongInt) : LongBool;
cdecl; external LuaLibName;
function lua_rawequal(L : Plua_State; idx1, idx2 : LongInt) : LongBool;
cdecl; external LuaLibName;
function lua_lessthan(L : Plua_State; idx1, idx2 : LongInt) : LongBool;
cdecl; external LuaLibName;
function lua_tonumber(L : Plua_State; idx : LongInt) : lua_Number;
cdecl; external LuaLibName;
function lua_tointeger(L : Plua_State; idx : PtrInt) : lua_Integer;
cdecl; external LuaLibName;
function lua_toboolean(L : Plua_State; idx : LongInt) : LongBool;
cdecl; external LuaLibName;
function lua_tolstring(L : Plua_State; idx : LongInt;
len : Psize_t) : PChar;
cdecl; external LuaLibName;
function lua_objlen(L : Plua_State; idx : LongInt) : size_t;
cdecl; external LuaLibName;
function lua_tocfunction(L : Plua_State; idx : LongInt) : lua_CFunction;
cdecl; external LuaLibName;
function lua_touserdata(L : Plua_State; idx : LongInt) : Pointer;
cdecl; external LuaLibName;
function lua_tothread(L : Plua_State; idx : LongInt) : Plua_State;
cdecl; external LuaLibName;
function lua_topointer(L : Plua_State; idx : LongInt) : Pointer;
cdecl; external LuaLibName;
(*
** push functions (C -> stack)
*)
procedure lua_pushnil(L : Plua_State);
cdecl; external LuaLibName;
procedure lua_pushnumber(L : Plua_State; n : lua_Number);
cdecl; external LuaLibName;
procedure lua_pushinteger(L : Plua_State; n : lua_Integer);
cdecl; external LuaLibName;
procedure lua_pushlstring(L : Plua_State; const s : PChar; ls : size_t);
cdecl; external LuaLibName;
procedure lua_pushstring(L : Plua_State; const s : PChar);
cdecl; external LuaLibName;
function lua_pushvfstring(L : Plua_State;
const fmt : PChar; argp : Pointer) : PChar;
cdecl; external LuaLibName;
function lua_pushfstring(L : Plua_State; const fmt : PChar) : PChar; varargs;
cdecl; external LuaLibName;
procedure lua_pushcclosure(L : Plua_State; fn : lua_CFunction; n : LongInt);
cdecl; external LuaLibName;
procedure lua_pushboolean(L : Plua_State; b : LongBool);
cdecl; external LuaLibName;
procedure lua_pushlightuserdata(L : Plua_State; p : Pointer);
cdecl; external LuaLibName;
function lua_pushthread(L : Plua_state) : Cardinal;
cdecl; external LuaLibName;
(*
** get functions (Lua -> stack)
*)
procedure lua_gettable(L : Plua_State ; idx : LongInt);
cdecl; external LuaLibName;
procedure lua_getfield(L : Plua_State; idx : LongInt; k : PChar);
cdecl; external LuaLibName;
procedure lua_rawget(L : Plua_State; idx : LongInt);
cdecl; external LuaLibName;
procedure lua_rawgeti(L : Plua_State; idx, n : LongInt);
cdecl; external LuaLibName;
procedure lua_createtable(L : Plua_State; narr, nrec : LongInt);
cdecl; external LuaLibName;
function lua_newuserdata(L : Plua_State; sz : size_t) : Pointer;
cdecl; external LuaLibName;
function lua_getmetatable(L : Plua_State; objindex : LongInt) : LongBool;
cdecl; external LuaLibName;
procedure lua_getfenv(L : Plua_State; idx : LongInt);
cdecl; external LuaLibName;
(*
** set functions (stack -> Lua)
*)
procedure lua_settable(L : Plua_State; idx : LongInt);
cdecl; external LuaLibName;
procedure lua_setfield(L : Plua_State; idx : LongInt; const k : PChar);
cdecl; external LuaLibName;
procedure lua_rawset(L : Plua_State; idx : LongInt);
cdecl; external LuaLibName;
procedure lua_rawseti(L : Plua_State; idx , n: LongInt);
cdecl; external LuaLibName;
function lua_setmetatable(L : Plua_State; objindex : LongInt): LongBool;
cdecl; external LuaLibName;
function lua_setfenv(L : Plua_State; idx : LongInt): LongBool;
cdecl; external LuaLibName;
(*
** `load' and `call' functions (load and run Lua code)
*)
procedure lua_call(L : Plua_State; nargs, nresults : LongInt);
cdecl; external LuaLibName;
function lua_pcall(L : Plua_State;
nargs, nresults, errfunc : LongInt) : LongInt;
cdecl; external LuaLibName;
function lua_cpcall(L : Plua_State;
func : lua_CFunction; ud : Pointer) : LongInt;
cdecl; external LuaLibName;
function lua_load(L : Plua_State; reader : lua_Reader;
dt : Pointer; const chunkname : PChar) : LongInt;
cdecl; external LuaLibName;
function lua_dump(L : Plua_State; writer : lua_Writer; data: Pointer) : LongInt;
cdecl; external LuaLibName;
(*
** coroutine functions
*)
function lua_yield(L : Plua_State; nresults : LongInt) : LongInt;
cdecl; external LuaLibName;
function lua_resume(L : Plua_State; narg : LongInt) : LongInt;
cdecl; external LuaLibName;
function lua_status(L : Plua_State) : LongInt;
cdecl; external LuaLibName;
(*
** garbage-collection functions and options
*)
const
LUA_GCSTOP = 0;
LUA_GCRESTART = 1;
LUA_GCCOLLECT = 2;
LUA_GCCOUNT = 3;
LUA_GCCOUNTB = 4;
LUA_GCSTEP = 5;
LUA_GCSETPAUSE = 6;
LUA_GCSETSTEPMUL = 7;
function lua_gc(L : Plua_State; what, data : LongInt) : LongInt;
cdecl; external LuaLibName;
(*
** miscellaneous functions
*)
function lua_error(L : Plua_State) : LongInt;
cdecl; external LuaLibName;
function lua_next(L : Plua_State; idx : LongInt) : LongInt;
cdecl; external LuaLibName;
procedure lua_concat(L : Plua_State; n : LongInt);
cdecl; external LuaLibName;
function lua_getallocf(L : Plua_State; ud : PPointer) : lua_Alloc;
cdecl; external LuaLibName;
procedure lua_setallocf(L : Plua_State; f : lua_Alloc; ud : Pointer);
cdecl; external LuaLibName;
(*
** ===============================================================
** some useful macros
** ===============================================================
*)
procedure lua_pop(L : Plua_State; n : LongInt);
procedure lua_newtable(L : Plua_State);
procedure lua_register(L : Plua_State; n : PChar; f : lua_CFunction);
procedure lua_pushcfunction(L : Plua_State; f : lua_CFunction);
function lua_strlen(L : Plua_State; idx : LongInt) : LongInt;
function lua_isfunction(L : Plua_State; n : LongInt) : Boolean;
function lua_istable(L : Plua_State; n : LongInt) : Boolean;
function lua_islightuserdata(L : Plua_State; n : LongInt) : Boolean;
function lua_isnil(L : Plua_State; n : LongInt) : Boolean;
function lua_isboolean(L : Plua_State; n : LongInt) : Boolean;
function lua_isthread(L : Plua_State; n : LongInt) : Boolean;
function lua_isnone(L : Plua_State; n : LongInt) : Boolean;
function lua_isnoneornil(L : Plua_State; n : LongInt) : Boolean;
procedure lua_pushliteral(L : Plua_State; s : PChar);
procedure lua_setglobal(L : Plua_State; s : PChar);
procedure lua_getglobal(L : Plua_State; s : PChar);
function lua_tostring(L : Plua_State; idx : LongInt) : PChar;
(*
** compatibility macros and functions
*)
function lua_open : Plua_State;
procedure lua_getregistry(L : Plua_State);
function lua_getgccount(L : Plua_State) : LongInt;
type
lua_Chuckreader = type lua_Reader;
lua_Chuckwriter = type lua_Writer;
(* ====================================================================== *)
(*
** {======================================================================
** Debug API
** =======================================================================
*)
(*
** Event codes
*)
const
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;
type
lua_Debug = packed record
event : LongInt;
name : PChar; (* (n) *)
namewhat : PChar; (* (n) `global', `local', `field', `method' *)
what : PChar; (* (S) `Lua', `C', `main', `tail' *)
source : PChar; (* (S) *)
currentline : LongInt; (* (l) *)
nups : LongInt; (* (u) number of upvalues *)
linedefined : LongInt; (* (S) *)
short_src : array [0..LUA_IDSIZE-1] of Char; (* (S) *)
(* private part *)
i_ci : LongInt; (* active function *)
end;
Plua_Debug = ^lua_Debug;
(* Functions to be called by the debuger in specific events *)
lua_Hook = procedure (L : Plua_State; ar : Plua_Debug); cdecl;
function lua_getstack(L : Plua_State; level : LongInt;
ar : Plua_Debug) : LongInt;
cdecl; external LuaLibName;
function lua_getinfo(L : Plua_State; const what : PChar;
ar: Plua_Debug): LongInt;
cdecl; external LuaLibName;
function lua_getlocal(L : Plua_State;
ar : Plua_Debug; n : LongInt) : PChar;
cdecl; external LuaLibName;
function lua_setlocal(L : Plua_State;
ar : Plua_Debug; n : LongInt) : PChar;
cdecl; external LuaLibName;
function lua_getupvalue(L : Plua_State; funcindex, n : LongInt) : PChar;
cdecl; external LuaLibName;
function lua_setupvalue(L : Plua_State; funcindex, n : LongInt) : PChar;
cdecl; external LuaLibName;
function lua_sethook(L : Plua_State; func : lua_Hook;
mask, count: LongInt): LongInt;
cdecl; external LuaLibName;
{$IFDEF LUA_GETHOOK}
function lua_gethook(L : Plua_State) : lua_Hook;
cdecl; external LuaLibName;
{$ENDIF}
function lua_gethookmask(L : Plua_State) : LongInt;
cdecl; external LuaLibName;
function lua_gethookcount(L : Plua_State) : LongInt;
cdecl; external LuaLibName;
(*****************************************************************************)
(* lualib.h *)
(*****************************************************************************)
(*
** $Id: lualib.h,v 1.36 2005/12/27 17:12:00 roberto Exp $
** Lua standard libraries
** See Copyright Notice at the end of this file
*)
const
(* Key to file-handle type *)
LUA_FILEHANDLE = 'FILE*';
LUA_COLIBNAME = 'coroutine';
LUA_TABLIBNAME = 'table';
LUA_IOLIBNAME = 'io';
LUA_OSLIBNAME = 'os';
LUA_STRLIBNAME = 'string';
LUA_MATHLIBNAME = 'math';
LUA_DBLIBNAME = 'debug';
LUA_LOADLIBNAME = 'package';
function luaopen_base(L : Plua_State) : LongInt;
cdecl; external LuaLibName;
function luaopen_table(L : Plua_State) : LongInt;
cdecl; external LuaLibName;
function luaopen_io(L : Plua_State) : LongInt;
cdecl; external LuaLibName;
function luaopen_os(L : Plua_State) : LongInt;
cdecl; external LuaLibName;
function luaopen_string(L : Plua_State) : LongInt;
cdecl; external LuaLibName;
function luaopen_math(L : Plua_State) : LongInt;
cdecl; external LuaLibName;
function luaopen_debug(L : Plua_State) : LongInt;
cdecl; external LuaLibName;
function luaopen_package(L : Plua_State) : LongInt;
cdecl; external LuaLibName;
procedure luaL_openlibs(L : Plua_State);
cdecl; external LuaLibName;
procedure lua_assert(x : Boolean); // a macro
(*****************************************************************************)
(* lauxlib.h *)
(*****************************************************************************)
(*
** $Id: lauxlib.h,v 1.87 2005/12/29 15:32:11 roberto Exp $
** Auxiliary functions for building Lua libraries
** See Copyright Notice at the end of this file.
*)
// not compatibility with the behavior of setn/getn in Lua 5.0
function luaL_getn(L : Plua_State; idx : LongInt) : LongInt;
procedure luaL_setn(L : Plua_State; i, j : LongInt);
const
LUA_ERRFILE = LUA_ERRERR + 1;
type
luaL_Reg = packed record
name : PChar;
func : lua_CFunction;
end;
PluaL_Reg = ^luaL_Reg;
procedure luaL_openlib(L : Plua_State; const libname : PChar;
const lr : PluaL_Reg; nup : LongInt);
cdecl; external LuaLibName;
procedure luaL_register(L : Plua_State; const libname : PChar;
const lr : PluaL_Reg);
cdecl; external LuaLibName;
function luaL_getmetafield(L : Plua_State; obj : LongInt;
const e : PChar) : LongInt;
cdecl; external LuaLibName;
function luaL_callmeta(L : Plua_State; obj : LongInt;
const e : PChar) : LongInt;
cdecl; external LuaLibName;
function luaL_typerror(L : Plua_State; narg : LongInt;
const tname : PChar) : LongInt;
cdecl; external LuaLibName;
function luaL_argerror(L : Plua_State; numarg : LongInt;
const extramsg : PChar) : LongInt;
cdecl; external LuaLibName;
function luaL_checklstring(L : Plua_State; numArg : LongInt;
ls : Psize_t) : PChar;
cdecl; external LuaLibName;
function luaL_optlstring(L : Plua_State; numArg : LongInt;
const def: PChar; ls: Psize_t) : PChar;
cdecl; external LuaLibName;
function luaL_checknumber(L : Plua_State; numArg : LongInt) : lua_Number;
cdecl; external LuaLibName;
function luaL_optnumber(L : Plua_State; nArg : LongInt;
def : lua_Number) : lua_Number;
cdecl; external LuaLibName;
function luaL_checkinteger(L : Plua_State; numArg : PtrInt) : lua_Integer;
cdecl; external LuaLibName;
function luaL_optinteger(L : Plua_State; nArg : PtrInt;
def : lua_Integer) : lua_Integer;
cdecl; external LuaLibName;
procedure luaL_checkstack(L : Plua_State; sz : LongInt; const msg : PChar);
cdecl; external LuaLibName;
procedure luaL_checktype(L : Plua_State; narg, t : LongInt);
cdecl; external LuaLibName;
procedure luaL_checkany(L : Plua_State; narg : LongInt);
cdecl; external LuaLibName;
function luaL_newmetatable(L : Plua_State; const tname : PChar) : LongInt;
cdecl; external LuaLibName;
function luaL_checkudata(L : Plua_State; ud : LongInt;
const tname : PChar) : Pointer;
cdecl; external LuaLibName;
procedure luaL_where(L : Plua_State; lvl : LongInt);
cdecl; external LuaLibName;
function luaL_error(L : Plua_State; const fmt : PChar) : LongInt; varargs;
cdecl; external LuaLibName;
function luaL_checkoption(L : Plua_State; narg : LongInt; const def : PChar;
const lst : array of PChar) : LongInt;
cdecl; external LuaLibName;
function luaL_ref(L : Plua_State; t : LongInt) : LongInt;
cdecl; external LuaLibName;
procedure luaL_unref(L : Plua_State; t, ref : LongInt);
cdecl; external LuaLibName;
function luaL_loadfile(L : Plua_State; const filename : PChar) : LongInt;
cdecl; external LuaLibName;
function luaL_loadbuffer(L : Plua_State; const buff : PChar;
sz : size_t; const name: PChar) : LongInt;
cdecl; external LuaLibName;
function luaL_loadstring(L : Plua_State; const s : Pchar) : LongInt;
cdecl; external LuaLibName;
function luaL_newstate : Plua_State;
cdecl; external LuaLibName;
function luaL_gsub(L : Plua_State; const s, p, r : PChar) : PChar;
cdecl; external LuaLibName;
function luaL_findtable(L : Plua_State; idx : LongInt;
const fname : PChar; szhint : LongInt) : PChar;
cdecl; external LuaLibName;
(*
** ===============================================================
** some useful macros
** ===============================================================
*)
function luaL_argcheck(L : Plua_State; cond : Boolean; numarg : LongInt;
extramsg : PChar): LongInt;
function luaL_checkstring(L : Plua_State; n : LongInt) : PChar;
function luaL_optstring(L : Plua_State; n : LongInt; d : PChar) : PChar;
function luaL_checkint(L : Plua_State; n : LongInt) : LongInt;
function luaL_optint(L : Plua_State; n, d : LongInt): LongInt;
function luaL_checklong(L : Plua_State; n : LongInt) : LongInt;
function luaL_optlong(L : Plua_State; n : LongInt; d : LongInt) : LongInt;
function luaL_typename(L : Plua_State; idx : LongInt) : PChar;
function luaL_dofile(L : Plua_State; fn : PChar) : LongInt;
function luaL_dostring(L : Plua_State; s : PChar) : LongInt;
procedure luaL_getmetatable(L : Plua_State; n : PChar);
(* not implemented yet
#define luaL_opt(L,f,n,d) (lua_isnoneornil(L,(n)) ? (d) : f(L,(n)))
*)
(*
** {======================================================
** Generic Buffer manipulation
** =======================================================
*)
type
luaL_Buffer = packed record
p : PChar; (* current position in buffer *)
lvl : LongInt; (* number of strings in the stack (level) *)
L : Plua_State;
buffer : array [0..LUAL_BUFFERSIZE-1] of Char;
end;
PluaL_Buffer = ^luaL_Buffer;
procedure luaL_addchar(B : PluaL_Buffer; c : Char);
(* compatibility only *)
procedure luaL_putchar(B : PluaL_Buffer; c : Char);
procedure luaL_addsize(B : PluaL_Buffer; n : LongInt);
procedure luaL_buffinit(L : Plua_State; B : PluaL_Buffer);
cdecl; external LuaLibName;
function luaL_prepbuffer(B : PluaL_Buffer) : PChar;
cdecl; external LuaLibName;
procedure luaL_addlstring(B : PluaL_Buffer; const s : PChar; ls : size_t);
cdecl; external LuaLibName;
procedure luaL_addstring(B : PluaL_Buffer; const s : PChar);
cdecl; external LuaLibName;
procedure luaL_addvalue(B : PluaL_Buffer);
cdecl; external LuaLibName;
procedure luaL_pushresult(B : PluaL_Buffer);
cdecl; external LuaLibName;
(* ====================================================== *)
(* compatibility with ref system *)
(* pre-defined references *)
const
LUA_NOREF = -2;
LUA_REFNIL = -1;
function lua_ref(L : Plua_State; lock : Boolean) : LongInt;
procedure lua_unref(L : Plua_State; ref : LongInt);
procedure lua_getref(L : Plua_State; ref : LongInt);
(******************************************************************************)
(******************************************************************************)
(******************************************************************************)
implementation
uses
SysUtils;
(*****************************************************************************)
(* luaconfig.h *)
(*****************************************************************************)
function lua_readline(L : Plua_State; var b : PChar; p : PChar): Boolean;
var
s : AnsiString;
begin
Write(p); // show prompt
ReadLn(s); // get line
b := PChar(s); // and return it
lua_readline := (b[0] <> #4); // test for ctrl-D
end;
procedure lua_saveline(L : Plua_State; idx : LongInt);
begin
end;
procedure lua_freeline(L : Plua_State; b : PChar);
begin
end;
(*****************************************************************************)
(* lua.h *)
(*****************************************************************************)
function lua_upvalueindex(idx : LongInt) : LongInt;
begin
lua_upvalueindex := LUA_GLOBALSINDEX - idx;
end;
procedure lua_pop(L : Plua_State; n : LongInt);
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; 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_strlen(L : Plua_State; idx : LongInt) : LongInt;
begin
lua_strlen := lua_objlen(L, idx);
end;
function lua_isfunction(L : Plua_State; n : LongInt) : Boolean;
begin
lua_isfunction := lua_type(L, n) = LUA_TFUNCTION;
end;
function lua_istable(L : Plua_State; n : LongInt) : Boolean;
begin
lua_istable := lua_type(L, n) = LUA_TTABLE;
end;
function lua_islightuserdata(L : Plua_State; n : LongInt) : Boolean;
begin
lua_islightuserdata := lua_type(L, n) = LUA_TLIGHTUSERDATA;
end;
function lua_isnil(L : Plua_State; n : LongInt) : Boolean;
begin
lua_isnil := lua_type(L, n) = LUA_TNIL;
end;
function lua_isboolean(L : Plua_State; n : LongInt) : Boolean;
begin
lua_isboolean := lua_type(L, n) = LUA_TBOOLEAN;
end;
function lua_isthread(L : Plua_State; n : LongInt) : Boolean;
begin
lua_isthread := lua_type(L, n) = LUA_TTHREAD;
end;
function lua_isnone(L : Plua_State; n : LongInt) : Boolean;
begin
lua_isnone := lua_type(L, n) = LUA_TNONE;
end;
function lua_isnoneornil(L : Plua_State; n : LongInt) : Boolean;
begin
lua_isnoneornil := lua_type(L, n) <= 0;
end;
procedure lua_pushliteral(L : Plua_State; s : PChar);
begin
lua_pushlstring(L, s, StrLen(s));
end;
procedure lua_setglobal(L : Plua_State; s : PChar);
begin
lua_setfield(L, LUA_GLOBALSINDEX, s);
end;
procedure lua_getglobal(L: Plua_State; s: PChar);
begin
lua_getfield(L, LUA_GLOBALSINDEX, s);
end;
function lua_tostring(L : Plua_State; idx : LongInt) : PChar;
begin
lua_tostring := lua_tolstring(L, idx, nil);
end;
function lua_open : Plua_State;
begin
lua_open := luaL_newstate;
end;
procedure lua_getregistry(L : Plua_State);
begin
lua_pushvalue(L, LUA_REGISTRYINDEX);
end;
function lua_getgccount(L : Plua_State) : LongInt;
begin
lua_getgccount := lua_gc(L, LUA_GCCOUNT, 0);
end;
(*****************************************************************************)
(* lualib.h *)
(*****************************************************************************)
procedure lua_assert(x : Boolean);
begin
end;
(*****************************************************************************)
(* lauxlib.h n *)
(*****************************************************************************)
function luaL_getn(L : Plua_State; idx : LongInt) : LongInt;
begin
luaL_getn := lua_objlen(L, idx);
end;
procedure luaL_setn(L : plua_State; i, j : LongInt);
begin
(* no op *)
end;
function luaL_argcheck(L : Plua_State; cond : Boolean; numarg : LongInt;
extramsg : PChar): LongInt;
begin
if not cond then
luaL_argcheck := luaL_argerror(L, numarg, extramsg)
else
luaL_argcheck := 0;
end;
function luaL_checkstring(L : Plua_State; n : LongInt) : PChar;
begin
luaL_checkstring := luaL_checklstring(L, n, nil);
end;
function luaL_optstring(L : Plua_State; n : LongInt; d : PChar) : PChar;
begin
luaL_optstring := luaL_optlstring(L, n, d, nil);
end;
function luaL_checkint(L : Plua_State; n : PtrInt) : PtrInt;
begin
luaL_checkint := luaL_checkinteger(L, n);
end;
function luaL_optint(L : Plua_State; n, d : PtrInt): PtrInt;
begin
luaL_optint := luaL_optinteger(L, n, d);
end;
function luaL_checklong(L : Plua_State; n : PtrInt) : PtrInt;
begin
luaL_checklong := luaL_checkinteger(L, n);
end;
function luaL_optlong(L : Plua_State; n : PtrInt; d : PtrInt) : PtrInt;
begin
luaL_optlong := luaL_optinteger(L, n, d);
end;
function luaL_typename(L : Plua_State; idx : LongInt) : PChar;
begin
luaL_typename := lua_typename( L, lua_type(L, idx) );
end;
function luaL_dofile(L : Plua_State; fn : PChar) : LongInt;
begin
luaL_dofile := luaL_loadfile(L, fn);
if luaL_dofile = 0 then
luaL_dofile := lua_pcall(L, 0, 0, 0);
end;
function luaL_dostring(L : Plua_State; s : PChar) : LongInt;
begin
luaL_dostring := luaL_loadstring(L, s);
if luaL_dostring = 0 then
luaL_dostring := lua_pcall(L, 0, 0, 0);
end;
procedure luaL_getmetatable(L : Plua_State; n : PChar);
begin
lua_getfield(L, LUA_REGISTRYINDEX, n);
end;
procedure luaL_addchar(B : PluaL_Buffer; c : Char);
begin
if not(B^.p < B^.buffer + LUAL_BUFFERSIZE) then
luaL_prepbuffer(B);
B^.p^ := c;
Inc(B^.p);
end;
procedure luaL_putchar(B : PluaL_Buffer; c : Char);
begin
luaL_addchar(B, c);
end;
procedure luaL_addsize(B : PluaL_Buffer; n : LongInt);
begin
Inc(B^.p, n);
end;
function lua_ref(L : Plua_State; lock : Boolean) : LongInt;
begin
if lock then
lua_ref := luaL_ref(L, LUA_REGISTRYINDEX)
else begin
lua_pushstring(L, 'unlocked references are obsolete');
lua_error(L);
lua_ref := 0;
end;
end;
procedure lua_unref(L : Plua_State; ref : LongInt);
begin
luaL_unref(L, LUA_REGISTRYINDEX, ref);
end;
procedure lua_getref(L : Plua_State; ref : LongInt);
begin
lua_rawgeti(L, LUA_REGISTRYINDEX, ref);
end;
(******************************************************************************
* Original copyright for the lua source and headers:
* 1994-2004 Tecgraf, PUC-Rio.
* www.lua.org.
*
*
* 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.
******************************************************************************)
end.
{$HINTS ON}