add lua support for rt-thead

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2399 bbd45198-f89e-11dd-88c7-29a3b14d5316

components/external/lua/ChangeLog

@@ -0,0 +1,8 @@
+
+2012-11-08
+    eLua Lua-5.1.4 on RT-Thread
+    arduino4lua.c --> larduinolib.c
+    new structure to place files
+
+2012-11-05
+    Standard Lua-5.2.0 on RT-Thread with some bugs（dofile，loadfile, etc.)

components/external/lua/README.TXT

@@ -0,0 +1,36 @@
+# Lua on RT-Thread
+
+## 简介
+RT-Thread中的Lua修改自[eLua](http://www.eluaproject.net/)的Lua-5.1.4版本。
+Lua依赖于Neblib库。
+启动lua的RAM占用情况
+    - 标准的lua        17.1904296875 KB
+    - 优化的lua        5.01953125 KB
+    注：数据来自print(collectgarbage('count'))的输出
+优化是指采用一个lua patch --- [Lua Tiny RAM](http://www.eluaproject.net/doc/v0.8/en_arch_ltr.html)
+
+## 使用
+在RT-Thread的finsh中，调用lua()获得一个lua解释器。
+在lua解释器中
+    - 可以调用lua标准库中的函数，如：print('hello, lua on rt-thread')
+    - 可以执行脚本文件，如：dofile('/hello.lua')
+    - 可以定义新的函数，如：function sinc(x) return math.sin(x)/x end
+    - etc.
+
+## 配置
+    1.通过在rtconfig.h中定义RT_USING_LUA加入lua组件
+    2.可以定义RT_LUA_OPTRAM减少RAM占用
+    3.可以定义RT_LUS_USE_EXLIBS而添加外部库，如arduino的常用函数封装为一个arduino库
+    3.更多的配置项可以在luaconf.h中找到
+
+## 开发相关
+    - 开启编译器对C99的支持，如MDK中，在C/C++选项的Misc Controls输入框中添加--c99
+    - 开启内存优化时：需要在链接脚本中定义_stext和_etext，.ordata*放在两者之间。
+      用于判断数据是read-only和writable。MDK中如何实现？？
+    - 添加新的模块，参见larduinolib.c
+    
+## 目录说明
+    - lua：从eLua获得Lua-5.1.4版本代码
+    - exlibs：external libraries，外部库代码，如Arduino库
+    - applications：Lua应用代码，如finsh中lua()
+    - test：测试代码

components/external/lua/SConscript

@@ -1,61 +1,14 @@
-Import('RTT_ROOT')
 Import('rtconfig')
-
-from building import *
 import os
+from building import *
 
-LUA_VERSION = '5.1.4'
-LUA_PATH = 'lua-' + LUA_VERSION
 
-if GetDepend('RT_USING_LUA') and not os.path.exists(LUA_PATH):
-    print '================ERROR============================'
-    print 'Please get lua dist and put them under lua folder'
-    print '================================================='
-    exit(0)
+objs = []
+cwd  = GetCurrentDir()
+list = os.listdir(cwd)
 
-# core source files 
-core_src = Split('''
-lapi.c
-lcode.c
-ldebug.c
-ldo.c
-ldump.c
-lfunc.c
-lgc.c
-llex.c
-lmem.c
-lobject.c
-lopcodes.c
-lparser.c
-lstate.c
-lstring.c
-ltable.c
-ltm.c
-lundump.c
-lvm.c
-lzio.c
-''')
+for item in list:
+    if os.path.isfile(os.path.join(cwd, item, 'SConscript')):
+        objs = objs + SConscript(os.path.join(item, 'SConscript'))
 
-# library source files 
-lib_src = Split('''
-lauxlib.c
-lbaselib.c
-ldblib.c
-liolib.c
-lmathlib.c
-loslib.c
-ltablib.c
-lstrlib.c
-loadlib.c
-linit.c
-''')
-
-src = core_src + lib_src
-
-for item in range(len(src)):
-    src[item] = LUA_PATH + '/src/' + src[item]
-
-CPPPATH = [RTT_ROOT + '/components/external/lua/' + LUA_PATH + '/src']
-group = DefineGroup('lua', src, depend = ['RT_USING_LUA'], CPPPATH = CPPPATH)
-
-Return('group')
+Return('objs')

components/external/lua/applications/SConscript

@@ -0,0 +1,11 @@
+
+import os
+from building import *
+
+cwd = GetCurrentDir()
+src	= Glob('*.c')
+CPPPATH = [cwd, str(Dir('#'))]
+
+group = DefineGroup('lua', src, depend = ['RT_USING_LUA'], CPPPATH = CPPPATH)
+
+Return('group')

components/external/lua/applications/lua_in_finsh.c

@@ -0,0 +1,162 @@
+/**
+ * run lua interpreter from finsh
+ */
+
+#include "rtthread.h"
+#include "finsh.h"
+#include "shell.h"
+
+struct
+{
+    struct rt_semaphore sem;
+    rt_device_t device;
+} dev4lua;
+
+extern int lua_main(int argc, char **argv);
+
+rt_err_t lua_rx_ind(rt_device_t dev, rt_size_t size)
+{
+    rt_sem_release(&dev4lua.sem);
+
+    return RT_EOK;
+}
+
+void finsh_lua(void *parameter)
+{
+    rt_err_t (*rx_indicate)(rt_device_t dev, rt_size_t size);
+
+    rt_sem_init(&(dev4lua.sem), "luasem", 0, 0);
+
+    /* save old rx_indicate */
+    rx_indicate = dev4lua.device->rx_indicate;
+
+    /* set new rx_indicate */
+    rt_device_set_rx_indicate(dev4lua.device, lua_rx_ind);
+
+    {
+        int argc = 1;
+        char *argv[] = {"lua", NULL};
+
+        /* run lua interpreter */
+        lua_main(argc, argv);
+    }
+
+    /* recover old rx_indicate */
+    rt_device_set_rx_indicate(dev4lua.device, rx_indicate);
+}
+
+static void lua(void)
+{
+    rt_thread_t lua_thread;
+    const char* device_name = finsh_get_device();
+    rt_device_t device = rt_device_find(device_name);
+    if (device == RT_NULL)
+    {
+        rt_kprintf("%s not find\n", device_name);
+        return;
+    }
+    dev4lua.device = device;
+
+#if 0
+    /* Run lua interpreter in separate thread */
+    lua_thread = rt_thread_create("lua",
+                                  finsh_lua,
+                                  0,
+                                  2048,
+                                  rt_thread_self()->current_priority + 1,
+                                  20);
+    if (lua_thread != RT_NULL)
+    {
+        rt_thread_startup(lua_thread);
+    }
+#else
+    /* Directly run lua interpreter in finsh */
+    finsh_lua(0);
+#endif
+}
+FINSH_FUNCTION_EXPORT(lua, lua interpreter)
+
+int readline4lua(const char *prompt, char *buffer, int buffer_size)
+{
+    char ch;
+    int line_position;
+
+start:
+    /* show prompt */
+    rt_kprintf(prompt);
+
+    line_position = 0;
+    memset(buffer, 0, buffer_size);
+    while (1)
+    {
+        if (rt_sem_take(&dev4lua.sem, RT_WAITING_FOREVER) != RT_EOK)
+        {
+            return 0;
+        }
+
+        while (rt_device_read(dev4lua.device, 0, &ch, 1) == 1)
+        {
+            /* handle CR key */
+            if (ch == '\r')
+            {
+                char next;
+                if (rt_device_read(dev4lua.device, 0, &next, 1) == 1)
+                    ch = next;
+            }
+            /* backspace key */
+            else if (ch == 0x7f || ch == 0x08)
+            {
+                if (line_position > 0)
+                {
+                    rt_kprintf("%c %c", ch, ch);
+                    line_position--;
+                }
+                buffer[line_position] = 0;
+                continue;
+            }
+            /* EOF(ctrl+d) */
+            else if (ch == 0x04)
+            {
+                if (line_position == 0)
+                    /* No input which makes lua interpreter close */
+                    return 0;
+                else
+                    continue;
+            }
+            
+            /* end of line */
+            if (ch == '\r' || ch == '\n')
+            {
+                buffer[line_position] = 0;
+                rt_kprintf("\n");
+                if (line_position == 0)
+                {
+                    /* Get a empty line, then go to get a new line */
+                    goto start;
+                }
+                else
+                {
+                    return line_position;
+                }
+            }
+
+            /* other control character or not an acsii character */
+            if (ch < 0x20 || ch >= 0x80)
+            {
+                continue;
+            }
+
+            /* echo */
+            rt_kprintf("%c", ch);
+            buffer[line_position] = ch;
+            ch = 0;
+            line_position++;
+
+            /* it's a large line, discard it */
+            if (line_position >= buffer_size)
+                line_position = 0;
+       }
+    }
+}
+
+

components/external/lua/exlibs/SConscript

@@ -0,0 +1,11 @@
+
+import os
+from building import *
+
+cwd = GetCurrentDir()
+src	= Glob('*.c')
+CPPPATH = [cwd, str(Dir('#'))]
+
+group = DefineGroup('lua', src, depend = ['RT_USING_LUA'], CPPPATH = CPPPATH)
+
+Return('group')

components/external/lua/exlibs/larduinolib.c

@@ -0,0 +1,92 @@
+/**
+ * Arduino library for lua
+ */
+
+
+#include "lua.h"
+#include "lauxlib.h"
+#include "lexlibs.h"
+
+#include "libarduino.h"
+
+int arduino_pinMode(lua_State *L)
+{
+    pinMode(luaL_checkint(L, 1), luaL_checkint(L, 2));
+    return 0;
+}
+
+int arduino_digitalWrite(lua_State *L)
+{
+    digitalWrite(luaL_checkint(L, 1), luaL_checkint(L, 2));
+    return 0;
+}
+
+int arduino_digitalRead(lua_State *L)
+{
+    lua_pushinteger(L, digitalRead(luaL_checkint(L, 1)));
+    return 1;
+}
+
+int arduino_analogWrite(lua_State *L)
+{
+    analogWrite(luaL_checkint(L, 1), luaL_checkint(L, 2));
+    return 0;
+}
+
+/* the minimum optimization level at which we use rotables */
+#define MIN_OPT_LEVEL   2
+#include "lrodefs.h"
+
+#if 0
+/* standard table */
+static const luaL_Reg arduino_map[] =
+{
+    {"pinMode", arduino_pinMode},
+    {"digitalRead", arduino_digitalRead},
+    {"digitalWrite", arduino_digitalWrite},
+    {"analogWrite", arduino_analogWrite},
+    {NULL, NULL}
+}
+#else
+const LUA_REG_TYPE arduino_map[] =
+{
+    {LSTRKEY("pinMode"), LFUNCVAL(arduino_pinMode)},
+    {LSTRKEY("digitalRead"), LFUNCVAL(arduino_digitalRead)},
+    {LSTRKEY("digitalWrite"), LFUNCVAL(arduino_digitalWrite)},
+    {LSTRKEY("analogWrite"), LFUNCVAL(arduino_analogWrite)},
+#if LUA_OPTIMIZE_MEMORY > 0
+    {LSTRKEY("HIGH"), LFUNCVAL(HIGH)},
+    {LSTRKEY("LOW"), LFUNCVAL(LOW)},
+    {LSTRKEY("INPUT"), LFUNCVAL(INPUT)},
+    {LSTRKEY("OUTPUT"), LFUNCVAL(OUTPUT)},
+    {LSTRKEY("INPUT_PULLUP"), LFUNCVAL(INPUT_PULLUP)},
+#endif /* LUA_OPTIMIZE_MEMORY > 0 */
+    {LNILKEY, LNILVAL}
+};
+#endif /* 0 */
+
+
+/**
+ * Open arduino library
+ */
+LUALIB_API int luaopen_arduino(lua_State *L)
+{
+#if LUA_OPTIMIZE_MEMORY > 0
+    return 0;
+#else
+    luaL_register(L, EXLIB_ARDUINO, arduino_map);
+    lua_pushnumber(L, HIGH);
+    lua_setfield(L, -2, "HIGH");
+    lua_pushnumber(L, LOW);
+    lua_setfield(L, -2, "LOW");
+    lua_pushnumber(L, INPUT);
+    lua_setfield(L, -2, "INPUT");
+    lua_pushnumber(L, OUTPUT);
+    lua_setfield(L, -2, "OUTPUT");
+    lua_pushnumber(L, INPUT_PULLUP);
+    lua_setfield(L, -2, "INPUT_PULLUP");
+    return 1;
+#endif
+}
+
+    

components/external/lua/exlibs/lexlibs.h

@@ -0,0 +1,15 @@
+/**
+ * External library
+ */
+
+#ifndef __LEXLIBS_H__
+#define __LEXLIBS_H__
+
+#define EXLIB_ARDUINO       "arduino"
+
+#define LUA_EXLIBS_ROM\
+    _ROM(EXLIB_ARDUINO, luaopen_arduino, arduino_map )
+
+
+#endif
+

components/external/lua/lua/README.TXT

@@ -0,0 +1,5 @@
+# Lua on RT-Thread
+
+## Introduction
+Lua is a powerful, fast, lightweight, embeddable scripting language. Now, it's
+available on RT-Thread.

components/external/lua/lua/SConscript

@@ -0,0 +1,13 @@
+Import('rtconfig')
+import os
+from building import *
+
+cwd = GetCurrentDir()
+src	= Glob('*.c')
+CPPPATH = [cwd, str(Dir('#'))]
+
+LIBS = ['m']
+
+group = DefineGroup('lua', src, depend = ['RT_USING_LUA'], CPPPATH = CPPPATH, LIBS=LIBS)
+
+Return('group')

components/external/lua/lua/lapi.h

@@ -0,0 +1,16 @@
+/*
+** $Id: lapi.h,v 2.2.1.1 2007/12/27 13:02:25 roberto Exp $
+** Auxiliary functions from Lua API
+** See Copyright Notice in lua.h
+*/
+
+#ifndef lapi_h
+#define lapi_h
+
+
+#include "lobject.h"
+
+
+LUAI_FUNC void luaA_pushobject (lua_State *L, const TValue *o);
+
+#endif

components/external/lua/lua/lauxlib.h

@@ -0,0 +1,179 @@
+/*
+** $Id: lauxlib.h,v 1.88.1.1 2007/12/27 13:02:25 roberto Exp $
+** Auxiliary functions for building Lua libraries
+** See Copyright Notice in lua.h
+*/
+
+
+#ifndef lauxlib_h
+#define lauxlib_h
+
+
+#include <stddef.h>
+#include <stdio.h>
+
+#include "lua.h"
+
+
+#if defined(LUA_COMPAT_GETN)
+LUALIB_API int (luaL_getn) (lua_State *L, int t);
+LUALIB_API void (luaL_setn) (lua_State *L, int t, int n);
+#else
+#define luaL_getn(L,i)          ((int)lua_objlen(L, i))
+#define luaL_setn(L,i,j)        ((void)0)  /* no op! */
+#endif
+
+#if defined(LUA_COMPAT_OPENLIB)
+#define luaI_openlib	luaL_openlib
+#endif
+
+
+/* extra error code for `luaL_load' */
+#define LUA_ERRFILE     (LUA_ERRERR+1)
+
+
+typedef struct luaL_Reg {
+  const char *name;
+  lua_CFunction func;
+} luaL_Reg;
+
+
+
+LUALIB_API void (luaI_openlib) (lua_State *L, const char *libname,
+                                const luaL_Reg *l, int nup, int ftype);
+LUALIB_API void (luaL_register) (lua_State *L, const char *libname,
+                                const luaL_Reg *l);
+LUALIB_API void (luaL_register_light) (lua_State *L, const char *libname,
+                                const luaL_Reg *l);                                
+LUALIB_API int (luaL_getmetafield) (lua_State *L, int obj, const char *e);
+LUALIB_API int (luaL_callmeta) (lua_State *L, int obj, const char *e);
+LUALIB_API int (luaL_typerror) (lua_State *L, int narg, const char *tname);
+LUALIB_API int (luaL_argerror) (lua_State *L, int numarg, const char *extramsg);
+LUALIB_API const char *(luaL_checklstring) (lua_State *L, int numArg,
+                                                          size_t *l);
+LUALIB_API const char *(luaL_optlstring) (lua_State *L, int numArg,
+                                          const char *def, size_t *l);
+LUALIB_API lua_Number (luaL_checknumber) (lua_State *L, int numArg);
+LUALIB_API lua_Number (luaL_optnumber) (lua_State *L, int nArg, lua_Number def);
+
+LUALIB_API lua_Integer (luaL_checkinteger) (lua_State *L, int numArg);
+LUALIB_API lua_Integer (luaL_optinteger) (lua_State *L, int nArg,
+                                          lua_Integer def);
+
+LUALIB_API void (luaL_checkstack) (lua_State *L, int sz, const char *msg);
+LUALIB_API void (luaL_checktype) (lua_State *L, int narg, int t);
+LUALIB_API void (luaL_checkany) (lua_State *L, int narg);
+LUALIB_API void (luaL_checkanyfunction) (lua_State *L, int narg);
+LUALIB_API void (luaL_checkanytable) (lua_State *L, int narg);
+
+LUALIB_API int   (luaL_newmetatable) (lua_State *L, const char *tname);
+LUALIB_API int   (luaL_rometatable) (lua_State *L, const char* tname, void *p);
+LUALIB_API void *(luaL_checkudata) (lua_State *L, int ud, const char *tname);
+
+LUALIB_API void (luaL_where) (lua_State *L, int lvl);
+LUALIB_API int (luaL_error) (lua_State *L, const char *fmt, ...);
+
+LUALIB_API int (luaL_checkoption) (lua_State *L, int narg, const char *def,
+                                   const char *const lst[]);
+
+LUALIB_API int (luaL_ref) (lua_State *L, int t);
+LUALIB_API void (luaL_unref) (lua_State *L, int t, int ref);
+
+LUALIB_API int (luaL_loadfile) (lua_State *L, const char *filename);
+LUALIB_API int (luaL_loadbuffer) (lua_State *L, const char *buff, size_t sz,
+                                  const char *name);
+LUALIB_API int (luaL_loadstring) (lua_State *L, const char *s);
+
+LUALIB_API lua_State *(luaL_newstate) (void);
+
+
+LUALIB_API const char *(luaL_gsub) (lua_State *L, const char *s, const char *p,
+                                                  const char *r);
+
+LUALIB_API const char *(luaL_findtable) (lua_State *L, int idx,
+                                         const char *fname, int szhint);
+
+
+
+
+/*
+** ===============================================================
+** some useful macros
+** ===============================================================
+*/
+
+#define luaL_argcheck(L, cond,numarg,extramsg)	\
+		((void)((cond) || luaL_argerror(L, (numarg), (extramsg))))
+#define luaL_checkstring(L,n)	(luaL_checklstring(L, (n), NULL))
+#define luaL_optstring(L,n,d)	(luaL_optlstring(L, (n), (d), NULL))
+#define luaL_checkint(L,n)	((int)luaL_checkinteger(L, (n)))
+#define luaL_optint(L,n,d)	((int)luaL_optinteger(L, (n), (d)))
+#define luaL_checklong(L,n)	((long)luaL_checkinteger(L, (n)))
+#define luaL_optlong(L,n,d)	((long)luaL_optinteger(L, (n), (d)))
+
+#define luaL_typename(L,i)	lua_typename(L, lua_type(L,(i)))
+
+#define luaL_dofile(L, fn) \
+	(luaL_loadfile(L, fn) || lua_pcall(L, 0, LUA_MULTRET, 0))
+
+#define luaL_dostring(L, s) \
+	(luaL_loadstring(L, s) || lua_pcall(L, 0, LUA_MULTRET, 0))
+
+#define luaL_getmetatable(L,n)	(lua_getfield(L, LUA_REGISTRYINDEX, (n)))
+
+#define luaL_opt(L,f,n,d)	(lua_isnoneornil(L,(n)) ? (d) : f(L,(n)))
+
+/*
+** {======================================================
+** Generic Buffer manipulation
+** =======================================================
+*/
+
+
+
+typedef struct luaL_Buffer {
+  char *p;			/* current position in buffer */
+  int lvl;  /* number of strings in the stack (level) */
+  lua_State *L;
+  char buffer[LUAL_BUFFERSIZE];
+} luaL_Buffer;
+
+#define luaL_addchar(B,c) \
+  ((void)((B)->p < ((B)->buffer+LUAL_BUFFERSIZE) || luaL_prepbuffer(B)), \
+   (*(B)->p++ = (char)(c)))
+
+/* compatibility only */
+#define luaL_putchar(B,c)	luaL_addchar(B,c)
+
+#define luaL_addsize(B,n)	((B)->p += (n))
+
+LUALIB_API void (luaL_buffinit) (lua_State *L, luaL_Buffer *B);
+LUALIB_API char *(luaL_prepbuffer) (luaL_Buffer *B);
+LUALIB_API void (luaL_addlstring) (luaL_Buffer *B, const char *s, size_t l);
+LUALIB_API void (luaL_addstring) (luaL_Buffer *B, const char *s);
+LUALIB_API void (luaL_addvalue) (luaL_Buffer *B);
+LUALIB_API void (luaL_pushresult) (luaL_Buffer *B);
+
+
+/* }====================================================== */
+
+
+/* compatibility with ref system */
+
+/* pre-defined references */
+#define LUA_NOREF       (-2)
+#define LUA_REFNIL      (-1)
+
+#define lua_ref(L,lock) ((lock) ? luaL_ref(L, LUA_REGISTRYINDEX) : \
+      (lua_pushstring(L, "unlocked references are obsolete"), lua_error(L), 0))
+
+#define lua_unref(L,ref)        luaL_unref(L, LUA_REGISTRYINDEX, (ref))
+
+#define lua_getref(L,ref)       lua_rawgeti(L, LUA_REGISTRYINDEX, (ref))
+
+
+#define luaL_reg	luaL_Reg
+
+#endif
+
+

components/external/lua/lua/lcode.h

@@ -0,0 +1,76 @@
+/*
+** $Id: lcode.h,v 1.48.1.1 2007/12/27 13:02:25 roberto Exp $
+** Code generator for Lua
+** See Copyright Notice in lua.h
+*/
+
+#ifndef lcode_h
+#define lcode_h
+
+#include "llex.h"
+#include "lobject.h"
+#include "lopcodes.h"
+#include "lparser.h"
+
+
+/*
+** Marks the end of a patch list. It is an invalid value both as an absolute
+** address, and as a list link (would link an element to itself).
+*/
+#define NO_JUMP (-1)
+
+
+/*
+** grep "ORDER OPR" if you change these enums
+*/
+typedef enum BinOpr {
+  OPR_ADD, OPR_SUB, OPR_MUL, OPR_DIV, OPR_MOD, OPR_POW,
+  OPR_CONCAT,
+  OPR_NE, OPR_EQ,
+  OPR_LT, OPR_LE, OPR_GT, OPR_GE,
+  OPR_AND, OPR_OR,
+  OPR_NOBINOPR
+} BinOpr;
+
+
+typedef enum UnOpr { OPR_MINUS, OPR_NOT, OPR_LEN, OPR_NOUNOPR } UnOpr;
+
+
+#define getcode(fs,e)	((fs)->f->code[(e)->u.s.info])
+
+#define luaK_codeAsBx(fs,o,A,sBx)	luaK_codeABx(fs,o,A,(sBx)+MAXARG_sBx)
+
+#define luaK_setmultret(fs,e)	luaK_setreturns(fs, e, LUA_MULTRET)
+
+LUAI_FUNC int luaK_codeABx (FuncState *fs, OpCode o, int A, unsigned int Bx);
+LUAI_FUNC int luaK_codeABC (FuncState *fs, OpCode o, int A, int B, int C);
+LUAI_FUNC void luaK_fixline (FuncState *fs, int line);
+LUAI_FUNC void luaK_nil (FuncState *fs, int from, int n);
+LUAI_FUNC void luaK_reserveregs (FuncState *fs, int n);
+LUAI_FUNC void luaK_checkstack (FuncState *fs, int n);
+LUAI_FUNC int luaK_stringK (FuncState *fs, TString *s);
+LUAI_FUNC int luaK_numberK (FuncState *fs, lua_Number r);
+LUAI_FUNC void luaK_dischargevars (FuncState *fs, expdesc *e);
+LUAI_FUNC int luaK_exp2anyreg (FuncState *fs, expdesc *e);
+LUAI_FUNC void luaK_exp2nextreg (FuncState *fs, expdesc *e);
+LUAI_FUNC void luaK_exp2val (FuncState *fs, expdesc *e);
+LUAI_FUNC int luaK_exp2RK (FuncState *fs, expdesc *e);
+LUAI_FUNC void luaK_self (FuncState *fs, expdesc *e, expdesc *key);
+LUAI_FUNC void luaK_indexed (FuncState *fs, expdesc *t, expdesc *k);
+LUAI_FUNC void luaK_goiftrue (FuncState *fs, expdesc *e);
+LUAI_FUNC void luaK_storevar (FuncState *fs, expdesc *var, expdesc *e);
+LUAI_FUNC void luaK_setreturns (FuncState *fs, expdesc *e, int nresults);
+LUAI_FUNC void luaK_setoneret (FuncState *fs, expdesc *e);
+LUAI_FUNC int luaK_jump (FuncState *fs);
+LUAI_FUNC void luaK_ret (FuncState *fs, int first, int nret);
+LUAI_FUNC void luaK_patchlist (FuncState *fs, int list, int target);
+LUAI_FUNC void luaK_patchtohere (FuncState *fs, int list);
+LUAI_FUNC void luaK_concat (FuncState *fs, int *l1, int l2);
+LUAI_FUNC int luaK_getlabel (FuncState *fs);
+LUAI_FUNC void luaK_prefix (FuncState *fs, UnOpr op, expdesc *v);
+LUAI_FUNC void luaK_infix (FuncState *fs, BinOpr op, expdesc *v);
+LUAI_FUNC void luaK_posfix (FuncState *fs, BinOpr op, expdesc *v1, expdesc *v2);
+LUAI_FUNC void luaK_setlist (FuncState *fs, int base, int nelems, int tostore);
+
+
+#endif

components/external/lua/lua/ldblib.c

@@ -0,0 +1,406 @@
+/*
+** $Id: ldblib.c,v 1.104.1.4 2009/08/04 18:50:18 roberto Exp $
+** Interface from Lua to its debug API
+** See Copyright Notice in lua.h
+*/
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define ldblib_c
+#define LUA_LIB
+
+#include "lua.h"
+
+#include "lauxlib.h"
+#include "lualib.h"
+#include "lrotable.h"
+
+
+
+static int db_getregistry (lua_State *L) {
+  lua_pushvalue(L, LUA_REGISTRYINDEX);
+  return 1;
+}
+
+
+static int db_getmetatable (lua_State *L) {
+  luaL_checkany(L, 1);
+  if (!lua_getmetatable(L, 1)) {
+    lua_pushnil(L);  /* no metatable */
+  }
+  return 1;
+}
+
+
+static int db_setmetatable (lua_State *L) {
+  int t = lua_type(L, 2);
+  luaL_argcheck(L, t == LUA_TNIL || t == LUA_TTABLE, 2,
+                    "nil or table expected");
+  lua_settop(L, 2);
+  lua_pushboolean(L, lua_setmetatable(L, 1));
+  return 1;
+}
+
+
+static int db_getfenv (lua_State *L) {
+  luaL_checkany(L, 1);
+  lua_getfenv(L, 1);
+  return 1;
+}
+
+
+static int db_setfenv (lua_State *L) {
+  luaL_checktype(L, 2, LUA_TTABLE);
+  lua_settop(L, 2);
+  if (lua_setfenv(L, 1) == 0)
+    luaL_error(L, LUA_QL("setfenv")
+                  " cannot change environment of given object");
+  return 1;
+}
+
+
+static void settabss (lua_State *L, const char *i, const char *v) {
+  lua_pushstring(L, v);
+  lua_setfield(L, -2, i);
+}
+
+
+static void settabsi (lua_State *L, const char *i, int v) {
+  lua_pushinteger(L, v);
+  lua_setfield(L, -2, i);
+}
+
+
+static lua_State *getthread (lua_State *L, int *arg) {
+  if (lua_isthread(L, 1)) {
+    *arg = 1;
+    return lua_tothread(L, 1);
+  }
+  else {
+    *arg = 0;
+    return L;
+  }
+}
+
+
+static void treatstackoption (lua_State *L, lua_State *L1, const char *fname) {
+  if (L == L1) {
+    lua_pushvalue(L, -2);
+    lua_remove(L, -3);
+  }
+  else
+    lua_xmove(L1, L, 1);
+  lua_setfield(L, -2, fname);
+}
+
+
+static int db_getinfo (lua_State *L) {
+  lua_Debug ar;
+  int arg;
+  lua_State *L1 = getthread(L, &arg);
+  const char *options = luaL_optstring(L, arg+2, "flnSu");
+  if (lua_isnumber(L, arg+1)) {
+    if (!lua_getstack(L1, (int)lua_tointeger(L, arg+1), &ar)) {
+      lua_pushnil(L);  /* level out of range */
+      return 1;
+    }
+  }
+  else if (lua_isfunction(L, arg+1) || lua_islightfunction(L, arg+1)) {
+    lua_pushfstring(L, ">%s", options);
+    options = lua_tostring(L, -1);
+    lua_pushvalue(L, arg+1);
+    lua_xmove(L, L1, 1);
+  }
+  else
+    return luaL_argerror(L, arg+1, "function or level expected");
+  if (!lua_getinfo(L1, options, &ar))
+    return luaL_argerror(L, arg+2, "invalid option");
+  lua_createtable(L, 0, 2);
+  if (strchr(options, 'S')) {
+    settabss(L, "source", ar.source);
+    settabss(L, "short_src", ar.short_src);
+    settabsi(L, "linedefined", ar.linedefined);
+    settabsi(L, "lastlinedefined", ar.lastlinedefined);
+    settabss(L, "what", ar.what);
+  }
+  if (strchr(options, 'l'))
+    settabsi(L, "currentline", ar.currentline);
+  if (strchr(options, 'u'))
+    settabsi(L, "nups", ar.nups);
+  if (strchr(options, 'n')) {
+    settabss(L, "name", ar.name);
+    settabss(L, "namewhat", ar.namewhat);
+  }
+  if (strchr(options, 'L'))
+    treatstackoption(L, L1, "activelines");
+  if (strchr(options, 'f'))
+    treatstackoption(L, L1, "func");
+  return 1;  /* return table */
+}
+    
+
+static int db_getlocal (lua_State *L) {
+  int arg;
+  lua_State *L1 = getthread(L, &arg);
+  lua_Debug ar;
+  const char *name;
+  if (!lua_getstack(L1, luaL_checkint(L, arg+1), &ar))  /* out of range? */
+    return luaL_argerror(L, arg+1, "level out of range");
+  name = lua_getlocal(L1, &ar, luaL_checkint(L, arg+2));
+  if (name) {
+    lua_xmove(L1, L, 1);
+    lua_pushstring(L, name);
+    lua_pushvalue(L, -2);
+    return 2;
+  }
+  else {
+    lua_pushnil(L);
+    return 1;
+  }
+}
+
+
+static int db_setlocal (lua_State *L) {
+  int arg;
+  lua_State *L1 = getthread(L, &arg);
+  lua_Debug ar;
+  if (!lua_getstack(L1, luaL_checkint(L, arg+1), &ar))  /* out of range? */
+    return luaL_argerror(L, arg+1, "level out of range");
+  luaL_checkany(L, arg+3);
+  lua_settop(L, arg+3);
+  lua_xmove(L, L1, 1);
+  lua_pushstring(L, lua_setlocal(L1, &ar, luaL_checkint(L, arg+2)));
+  return 1;
+}
+
+
+static int auxupvalue (lua_State *L, int get) {
+  const char *name;
+  int n = luaL_checkint(L, 2);
+  luaL_checktype(L, 1, LUA_TFUNCTION);
+  if (lua_iscfunction(L, 1)) return 0;  /* cannot touch C upvalues from Lua */
+  name = get ? lua_getupvalue(L, 1, n) : lua_setupvalue(L, 1, n);
+  if (name == NULL) return 0;
+  lua_pushstring(L, name);
+  lua_insert(L, -(get+1));
+  return get + 1;
+}
+
+
+static int db_getupvalue (lua_State *L) {
+  return auxupvalue(L, 1);
+}
+
+
+static int db_setupvalue (lua_State *L) {
+  luaL_checkany(L, 3);
+  return auxupvalue(L, 0);
+}
+
+
+
+static const char KEY_HOOK = 'h';
+
+
+static void hookf (lua_State *L, lua_Debug *ar) {
+  static const char *const hooknames[] =
+    {"call", "return", "line", "count", "tail return"};
+  lua_pushlightuserdata(L, (void *)&KEY_HOOK);
+  lua_rawget(L, LUA_REGISTRYINDEX);
+  lua_pushlightuserdata(L, L);
+  lua_rawget(L, -2);
+  if (lua_isfunction(L, -1)) {
+    lua_pushstring(L, hooknames[(int)ar->event]);
+    if (ar->currentline >= 0)
+      lua_pushinteger(L, ar->currentline);
+    else lua_pushnil(L);
+    lua_assert(lua_getinfo(L, "lS", ar));
+    lua_call(L, 2, 0);
+  }
+}
+
+
+static int makemask (const char *smask, int count) {
+  int mask = 0;
+  if (strchr(smask, 'c')) mask |= LUA_MASKCALL;
+  if (strchr(smask, 'r')) mask |= LUA_MASKRET;
+  if (strchr(smask, 'l')) mask |= LUA_MASKLINE;
+  if (count > 0) mask |= LUA_MASKCOUNT;
+  return mask;
+}
+
+
+static char *unmakemask (int mask, char *smask) {
+  int i = 0;
+  if (mask & LUA_MASKCALL) smask[i++] = 'c';
+  if (mask & LUA_MASKRET) smask[i++] = 'r';
+  if (mask & LUA_MASKLINE) smask[i++] = 'l';
+  smask[i] = '\0';
+  return smask;
+}
+
+
+static void gethooktable (lua_State *L) {
+  lua_pushlightuserdata(L, (void *)&KEY_HOOK);
+  lua_rawget(L, LUA_REGISTRYINDEX);
+  if (!lua_istable(L, -1)) {
+    lua_pop(L, 1);
+    lua_createtable(L, 0, 1);
+    lua_pushlightuserdata(L, (void *)&KEY_HOOK);
+    lua_pushvalue(L, -2);
+    lua_rawset(L, LUA_REGISTRYINDEX);
+  }
+}
+
+
+static int db_sethook (lua_State *L) {
+  int arg, mask, count;
+  lua_Hook func;
+  lua_State *L1 = getthread(L, &arg);
+  if (lua_isnoneornil(L, arg+1)) {
+    lua_settop(L, arg+1);
+    func = NULL; mask = 0; count = 0;  /* turn off hooks */
+  }
+  else {
+    const char *smask = luaL_checkstring(L, arg+2);
+    luaL_checkanyfunction(L, arg+1);
+    count = luaL_optint(L, arg+3, 0);
+    func = hookf; mask = makemask(smask, count);
+  }
+  gethooktable(L);
+  lua_pushlightuserdata(L, L1);
+  lua_pushvalue(L, arg+1);
+  lua_rawset(L, -3);  /* set new hook */
+  lua_pop(L, 1);  /* remove hook table */
+  lua_sethook(L1, func, mask, count);  /* set hooks */
+  return 0;
+}
+
+
+static int db_gethook (lua_State *L) {
+  int arg;
+  lua_State *L1 = getthread(L, &arg);
+  char buff[5];
+  int mask = lua_gethookmask(L1);
+  lua_Hook hook = lua_gethook(L1);
+  if (hook != NULL && hook != hookf)  /* external hook? */
+    lua_pushliteral(L, "external hook");
+  else {
+    gethooktable(L);
+    lua_pushlightuserdata(L, L1);
+    lua_rawget(L, -2);   /* get hook */
+    lua_remove(L, -2);  /* remove hook table */
+  }
+  lua_pushstring(L, unmakemask(mask, buff));
+  lua_pushinteger(L, lua_gethookcount(L1));
+  return 3;
+}
+
+
+static int db_debug (lua_State *L) {
+  for (;;) {
+    char buffer[LUA_MAXINPUT];
+#if defined(LUA_USE_STDIO)
+    fputs("lua_debug> ", stderr);
+    if (fgets(buffer, sizeof(buffer), stdin) == 0 ||
+#else
+//    luai_writestringerror("%s", "lua_debug>");
+    if (lua_readline(L, buffer, "lua_debug>") == 0 ||
+#endif
+        strcmp(buffer, "cont\n") == 0)
+      return 0;
+    if (luaL_loadbuffer(L, buffer, strlen(buffer), "=(debug command)") ||
+        lua_pcall(L, 0, 0, 0)) {
+#if defined(LUA_USE_STDIO)
+      fputs(lua_tostring(L, -1), stderr);
+      fputs("\n", stderr);
+#else
+      luai_writestringerror("%s\n", lua_tostring(L, -1));
+#endif
+    }
+    lua_settop(L, 0);  /* remove eventual returns */
+  }
+}
+
+
+#define LEVELS1	12	/* size of the first part of the stack */
+#define LEVELS2	10	/* size of the second part of the stack */
+
+static int db_errorfb (lua_State *L) {
+  int level;
+  int firstpart = 1;  /* still before eventual `...' */
+  int arg;
+  lua_State *L1 = getthread(L, &arg);
+  lua_Debug ar;
+  if (lua_isnumber(L, arg+2)) {
+    level = (int)lua_tointeger(L, arg+2);
+    lua_pop(L, 1);
+  }
+  else
+    level = (L == L1) ? 1 : 0;  /* level 0 may be this own function */
+  if (lua_gettop(L) == arg)
+    lua_pushliteral(L, "");
+  else if (!lua_isstring(L, arg+1)) return 1;  /* message is not a string */
+  else lua_pushliteral(L, "\n");
+  lua_pushliteral(L, "stack traceback:");
+  while (lua_getstack(L1, level++, &ar)) {
+    if (level > LEVELS1 && firstpart) {
+      /* no more than `LEVELS2' more levels? */
+      if (!lua_getstack(L1, level+LEVELS2, &ar))
+        level--;  /* keep going */
+      else {
+        lua_pushliteral(L, "\n\t...");  /* too many levels */
+        while (lua_getstack(L1, level+LEVELS2, &ar))  /* find last levels */
+          level++;
+      }
+      firstpart = 0;
+      continue;
+    }
+    lua_pushliteral(L, "\n\t");
+    lua_getinfo(L1, "Snl", &ar);
+    lua_pushfstring(L, "%s:", ar.short_src);
+    if (ar.currentline > 0)
+      lua_pushfstring(L, "%d:", ar.currentline);
+    if (*ar.namewhat != '\0')  /* is there a name? */
+        lua_pushfstring(L, " in function " LUA_QS, ar.name);
+    else {
+      if (*ar.what == 'm')  /* main? */
+        lua_pushfstring(L, " in main chunk");
+      else if (*ar.what == 'C' || *ar.what == 't')
+        lua_pushliteral(L, " ?");  /* C function or tail call */
+      else
+        lua_pushfstring(L, " in function <%s:%d>",
+                           ar.short_src, ar.linedefined);
+    }
+    lua_concat(L, lua_gettop(L) - arg);
+  }
+  lua_concat(L, lua_gettop(L) - arg);
+  return 1;
+}
+
+#define MIN_OPT_LEVEL 1
+#include "lrodefs.h"
+const LUA_REG_TYPE dblib[] = {
+  {LSTRKEY("debug"), LFUNCVAL(db_debug)},
+  {LSTRKEY("getfenv"), LFUNCVAL(db_getfenv)},
+  {LSTRKEY("gethook"), LFUNCVAL(db_gethook)},
+  {LSTRKEY("getinfo"), LFUNCVAL(db_getinfo)},
+  {LSTRKEY("getlocal"), LFUNCVAL(db_getlocal)},
+  {LSTRKEY("getregistry"), LFUNCVAL(db_getregistry)},
+  {LSTRKEY("getmetatable"), LFUNCVAL(db_getmetatable)},
+  {LSTRKEY("getupvalue"), LFUNCVAL(db_getupvalue)},
+  {LSTRKEY("setfenv"), LFUNCVAL(db_setfenv)},
+  {LSTRKEY("sethook"), LFUNCVAL(db_sethook)},
+  {LSTRKEY("setlocal"), LFUNCVAL(db_setlocal)},
+  {LSTRKEY("setmetatable"), LFUNCVAL(db_setmetatable)},
+  {LSTRKEY("setupvalue"), LFUNCVAL(db_setupvalue)},
+  {LSTRKEY("traceback"), LFUNCVAL(db_errorfb)},
+  {LNILKEY, LNILVAL}
+};
+
+LUALIB_API int luaopen_debug (lua_State *L) {
+  LREGISTER(L, LUA_DBLIBNAME, dblib);
+}

components/external/lua/lua/ldebug.h

@@ -0,0 +1,33 @@
+/*
+** $Id: ldebug.h,v 2.3.1.1 2007/12/27 13:02:25 roberto Exp $
+** Auxiliary functions from Debug Interface module
+** See Copyright Notice in lua.h
+*/
+
+#ifndef ldebug_h
+#define ldebug_h
+
+
+#include "lstate.h"
+
+
+#define pcRel(pc, p)	(cast(int, (pc) - (p)->code) - 1)
+
+#define getline(f,pc)	(((f)->lineinfo) ? (f)->lineinfo[pc] : 0)
+
+#define resethookcount(L)	(L->hookcount = L->basehookcount)
+
+
+LUAI_FUNC void luaG_typeerror (lua_State *L, const TValue *o,
+                                             const char *opname);
+LUAI_FUNC void luaG_concaterror (lua_State *L, StkId p1, StkId p2);
+LUAI_FUNC void luaG_aritherror (lua_State *L, const TValue *p1,
+                                              const TValue *p2);
+LUAI_FUNC int luaG_ordererror (lua_State *L, const TValue *p1,
+                                             const TValue *p2);
+LUAI_FUNC void luaG_runerror (lua_State *L, const char *fmt, ...);
+LUAI_FUNC void luaG_errormsg (lua_State *L);
+LUAI_FUNC int luaG_checkcode (const Proto *pt);
+LUAI_FUNC int luaG_checkopenop (Instruction i);
+
+#endif

components/external/lua/lua/ldo.h

@@ -0,0 +1,57 @@
+/*
+** $Id: ldo.h,v 2.7.1.1 2007/12/27 13:02:25 roberto Exp $
+** Stack and Call structure of Lua
+** See Copyright Notice in lua.h
+*/
+
+#ifndef ldo_h
+#define ldo_h
+
+
+#include "lobject.h"
+#include "lstate.h"
+#include "lzio.h"
+
+
+#define luaD_checkstack(L,n)	\
+  if ((char *)L->stack_last - (char *)L->top <= (n)*(int)sizeof(TValue)) \
+    luaD_growstack(L, n); \
+  else condhardstacktests(luaD_reallocstack(L, L->stacksize - EXTRA_STACK - 1));
+
+
+#define incr_top(L) {luaD_checkstack(L,1); L->top++;}
+
+#define savestack(L,p)		((char *)(p) - (char *)L->stack)
+#define restorestack(L,n)	((TValue *)((char *)L->stack + (n)))
+
+#define saveci(L,p)		((char *)(p) - (char *)L->base_ci)
+#define restoreci(L,n)		((CallInfo *)((char *)L->base_ci + (n)))
+
+
+/* results from luaD_precall */
+#define PCRLUA		0	/* initiated a call to a Lua function */
+#define PCRC		1	/* did a call to a C function */
+#define PCRYIELD	2	/* C funtion yielded */
+
+
+/* type of protected functions, to be ran by `runprotected' */
+typedef void (*Pfunc) (lua_State *L, void *ud);
+
+LUAI_FUNC int luaD_protectedparser (lua_State *L, ZIO *z, const char *name);
+LUAI_FUNC void luaD_callhook (lua_State *L, int event, int line);
+LUAI_FUNC int luaD_precall (lua_State *L, StkId func, int nresults);
+LUAI_FUNC void luaD_call (lua_State *L, StkId func, int nResults);
+LUAI_FUNC int luaD_pcall (lua_State *L, Pfunc func, void *u,
+                                        ptrdiff_t oldtop, ptrdiff_t ef);
+LUAI_FUNC int luaD_poscall (lua_State *L, StkId firstResult);
+LUAI_FUNC void luaD_reallocCI (lua_State *L, int newsize);
+LUAI_FUNC void luaD_reallocstack (lua_State *L, int newsize);
+LUAI_FUNC void luaD_growstack (lua_State *L, int n);
+
+LUAI_FUNC void luaD_throw (lua_State *L, int errcode);
+LUAI_FUNC int luaD_rawrunprotected (lua_State *L, Pfunc f, void *ud);
+
+LUAI_FUNC void luaD_seterrorobj (lua_State *L, int errcode, StkId oldtop);
+
+#endif
+

components/external/lua/lua/ldump.c

@@ -0,0 +1,321 @@
+/*
+** $Id: ldump.c,v 2.8.1.1 2007/12/27 13:02:25 roberto Exp $
+** save precompiled Lua chunks
+** See Copyright Notice in lua.h
+*/
+
+#include <stddef.h>
+#include <sys/types.h>
+#include <string.h>
+
+#define ldump_c
+#define LUA_CORE
+
+#include "lua.h"
+
+#include "lobject.h"
+#include "lstate.h"
+#include "lundump.h"
+
+typedef struct {
+ lua_State* L;
+ lua_Writer writer;
+ void* data;
+ int strip;
+ int status;
+ DumpTargetInfo target;
+ size_t wrote;
+} DumpState;
+
+#define DumpMem(b,n,size,D)	DumpBlock(b,(n)*(size),D)
+#define DumpVar(x,D)	 	DumpMem(&x,1,sizeof(x),D)
+
+static void DumpBlock(const void* b, size_t size, DumpState* D)
+{
+ if (D->status==0)
+ {
+  lua_unlock(D->L);
+  D->status=(*D->writer)(D->L,b,size,D->data);
+  D->wrote+=size;
+  lua_lock(D->L);
+ }
+}
+
+static void DumpChar(int y, DumpState* D)
+{
+ char x=(char)y;
+ DumpVar(x,D);
+}
+
+static void Align4(DumpState *D)
+{
+ while(D->wrote&3)
+  DumpChar(0,D);
+}
+
+static void MaybeByteSwap(char *number, size_t numbersize, DumpState *D)
+{
+ int x=1;
+ int platform_little_endian = *(char*)&x;
+ if (platform_little_endian != D->target.little_endian)
+ {
+  unsigned long i;
+  for (i=0; i<numbersize/2; i++)
+  {
+   char temp = number[i];
+   number[i] = number[numbersize-1-i];
+   number[numbersize-1-i] = temp;
+  }
+ }
+}
+
+static void DumpIntWithSize(int x, int sizeof_int, DumpState* D)
+{
+ /* dump signed integer */
+ switch(sizeof_int) {
+  case 1: {
+   if (x>0x7F || x<(-0x80)) D->status=LUA_ERR_CC_INTOVERFLOW; 
+   DumpChar(x,D);
+  } break;
+  case 2: {
+   if (x>0x7FFF || x<(-0x8000)) D->status=LUA_ERR_CC_INTOVERFLOW; 
+   int16_t y=(int16_t)x;
+   MaybeByteSwap((char*)&y,2,D);
+   DumpVar(y,D);
+  } break;
+  case 4: {
+   /* Need to reduce bounds by 1 to avoid messing 32-bit compilers up */
+   if (x>0x7FFFFFFE || x<(-0x7FFFFFFF)) D->status=LUA_ERR_CC_INTOVERFLOW; 
+   int32_t y=(int32_t)x;
+   MaybeByteSwap((char*)&y,4,D);
+   DumpVar(y,D);
+  } break;
+  default: lua_assert(0);
+ }
+}
+
+static void DumpInt(int x, DumpState* D)
+{
+ DumpIntWithSize(x,D->target.sizeof_int,D);
+}
+
+static void DumpSize(uint32_t x, DumpState* D)
+{
+ /* dump unsigned integer */
+ switch(D->target.sizeof_strsize_t) {
+  case 1: {
+   if (x>0xFF) D->status=LUA_ERR_CC_INTOVERFLOW; 
+   DumpChar(x,D);
+  } break;
+  case 2: {
+   if (x>0xFFFF) D->status=LUA_ERR_CC_INTOVERFLOW;
+   uint16_t y=(uint16_t)x;
+   MaybeByteSwap((char*)&y,2,D);
+   DumpVar(y,D);
+  } break;
+  case 4: {
+   /* Reduce bounds to avoid messing 32-bit compilers up */
+   if (x>0xFFFFFFFE) D->status=LUA_ERR_CC_INTOVERFLOW;
+   uint32_t y=x;
+   MaybeByteSwap((char*)&y,4,D);
+   DumpVar(y,D);
+  } break;
+  default: lua_assert(0);
+ }
+}
+
+static void DumpNumber(lua_Number x, DumpState* D)
+{
+#if defined( LUA_NUMBER_INTEGRAL ) && !defined( LUA_CROSS_COMPILER )
+  DumpIntWithSize(x,D->target.sizeof_lua_Number,D);
+#else // #if defined( LUA_NUMBER_INTEGRAL ) && !defined( LUA_CROSS_COMPILER )
+ if (D->target.lua_Number_integral)
+ {
+  if (((float)(int)x)!=x) D->status=LUA_ERR_CC_NOTINTEGER;
+  DumpIntWithSize(x,D->target.sizeof_lua_Number,D);
+ }
+ else
+ {
+  switch(D->target.sizeof_lua_Number)
+  {
+   /* do we need bounds checking? */
+   case 4: {
+    float y=x;
+    MaybeByteSwap((char*)&y,4,D);
+    DumpVar(y,D);
+   } break;
+   case 8: {
+    double y=x;
+    // ARM FPA mode: keep endianness, but swap high and low parts of the 
+    // memory representation. This is the default compilation mode for ARM 
+    // targets with non-EABI gcc
+    if(D->target.is_arm_fpa)
+    {
+      char *pnum=(char*)&y, temp[4];
+      memcpy(temp,pnum,4);
+      memcpy(pnum,pnum+4,4);
+      memcpy(pnum+4,temp,4);
+    }    
+    MaybeByteSwap((char*)&y,8,D);
+    DumpVar(y,D);
+   } break;
+   default: lua_assert(0);
+  }
+ }
+#endif // #if defined( LUA_NUMBER_INTEGRAL ) && !defined( LUA_CROSS_COMPILER )
+}
+
+static void DumpCode(const Proto *f, DumpState* D)
+{
+ DumpInt(f->sizecode,D);
+ char buf[10];
+ int i;
+ Align4(D);
+ for (i=0; i<f->sizecode; i++)
+ {
+  memcpy(buf,&f->code[i],sizeof(Instruction));
+  MaybeByteSwap(buf,sizeof(Instruction),D);
+  DumpBlock(buf,sizeof(Instruction),D);
+ }
+}
+
+static void DumpString(const TString* s, DumpState* D)
+{
+ if (s==NULL || getstr(s)==NULL)
+ {
+  strsize_t size=0;
+  DumpSize(size,D);
+ }
+ else
+ {
+  strsize_t size=( strsize_t )s->tsv.len+1;		/* include trailing '\0' */
+  DumpSize(size,D);
+  DumpBlock(getstr(s),size,D);
+ }
+}
+
+static void DumpFunction(const Proto* f, const TString* p, DumpState* D);
+
+static void DumpConstants(const Proto* f, DumpState* D)
+{
+ int i,n=f->sizek;
+ DumpInt(n,D);
+ for (i=0; i<n; i++)
+ {
+  const TValue* o=&f->k[i];
+  DumpChar(ttype(o),D);
+  switch (ttype(o))
+  {
+   case LUA_TNIL:
+	break;
+   case LUA_TBOOLEAN:
+	DumpChar(bvalue(o),D);
+	break;
+   case LUA_TNUMBER:
+	DumpNumber(nvalue(o),D);
+	break;
+   case LUA_TSTRING:
+	DumpString(rawtsvalue(o),D);
+	break;
+   default:
+	lua_assert(0);			/* cannot happen */
+	break;
+  }
+ }
+ n=f->sizep;
+ DumpInt(n,D);
+ for (i=0; i<n; i++) DumpFunction(f->p[i],f->source,D);
+}
+
+static void DumpDebug(const Proto* f, DumpState* D)
+{
+ int i,n;
+ n= (D->strip) ? 0 : f->sizelineinfo;
+ DumpInt(n,D);
+ Align4(D);
+ for (i=0; i<n; i++)
+ {
+  DumpInt(f->lineinfo[i],D);
+ }
+ 
+ n= (D->strip) ? 0 : f->sizelocvars;
+ DumpInt(n,D);
+ for (i=0; i<n; i++)
+ {
+  DumpString(f->locvars[i].varname,D);
+  DumpInt(f->locvars[i].startpc,D);
+  DumpInt(f->locvars[i].endpc,D);
+ }
+
+ n= (D->strip) ? 0 : f->sizeupvalues;
+ DumpInt(n,D);
+ for (i=0; i<n; i++) DumpString(f->upvalues[i],D);
+}
+
+static void DumpFunction(const Proto* f, const TString* p, DumpState* D)
+{
+ DumpString((f->source==p || D->strip) ? NULL : f->source,D);
+ DumpInt(f->linedefined,D);
+ DumpInt(f->lastlinedefined,D);
+ DumpChar(f->nups,D);
+ DumpChar(f->numparams,D);
+ DumpChar(f->is_vararg,D);
+ DumpChar(f->maxstacksize,D);
+ DumpCode(f,D);
+ DumpConstants(f,D);
+ DumpDebug(f,D);
+}
+
+static void DumpHeader(DumpState* D)
+{
+ char buf[LUAC_HEADERSIZE];
+ char *h=buf;
+ 
+ /* This code must be kept in sync wiht luaU_header */
+ memcpy(h,LUA_SIGNATURE,sizeof(LUA_SIGNATURE)-1);
+ h+=sizeof(LUA_SIGNATURE)-1;
+ *h++=(char)LUAC_VERSION;
+ *h++=(char)LUAC_FORMAT;
+ *h++=(char)D->target.little_endian;
+ *h++=(char)D->target.sizeof_int;
+ *h++=(char)D->target.sizeof_strsize_t;
+ *h++=(char)sizeof(Instruction);
+ *h++=(char)D->target.sizeof_lua_Number;
+ *h++=(char)D->target.lua_Number_integral;
+ 
+ DumpBlock(buf,LUAC_HEADERSIZE,D);
+}
+
+/*
+** dump Lua function as precompiled chunk with specified target
+*/
+int luaU_dump_crosscompile (lua_State* L, const Proto* f, lua_Writer w, void* data, int strip, DumpTargetInfo target)
+{
+ DumpState D;
+ D.L=L;
+ D.writer=w;
+ D.data=data;
+ D.strip=strip;
+ D.status=0;
+ D.target=target;
+ D.wrote=0;
+ DumpHeader(&D);
+ DumpFunction(f,NULL,&D);
+ return D.status;
+}
+
+/*
+ ** dump Lua function as precompiled chunk with local machine as target
+ */
+int luaU_dump (lua_State* L, const Proto* f, lua_Writer w, void* data, int strip)
+{
+ DumpTargetInfo target;
+ int test=1;
+ target.little_endian=*(char*)&test;
+ target.sizeof_int=sizeof(int);
+ target.sizeof_strsize_t=sizeof(strsize_t);
+ target.sizeof_lua_Number=sizeof(lua_Number);
+ target.lua_Number_integral=(((lua_Number)0.5)==0);
+ target.is_arm_fpa=0;
+ return luaU_dump_crosscompile(L,f,w,data,strip,target);
+}

components/external/lua/lua/legc.c

@@ -0,0 +1,12 @@
+// Lua EGC (Emergeny Garbage Collector) interface
+
+#include "legc.h"
+#include "lstate.h"
+
+void legc_set_mode(lua_State *L, int mode, unsigned limit) {
+   global_State *g = G(L); 
+   
+   g->egcmode = mode;
+   g->memlimit = limit;
+}
+

components/external/lua/lua/legc.h

@@ -0,0 +1,17 @@
+// Lua EGC (Emergeny Garbage Collector) interface
+
+#ifndef __LEGC_H__
+#define __LEGC_H__
+
+#include "lstate.h"
+
+// EGC operations modes
+#define EGC_NOT_ACTIVE        0   // EGC disabled
+#define EGC_ON_ALLOC_FAILURE  1   // run EGC on allocation failure
+#define EGC_ON_MEM_LIMIT      2   // run EGC when an upper memory limit is hit
+#define EGC_ALWAYS            4   // always run EGC before an allocation
+
+void legc_set_mode(lua_State *L, int mode, unsigned limit);
+
+#endif
+

components/external/lua/lua/lfunc.c

@@ -0,0 +1,176 @@
+/*
+** $Id: lfunc.c,v 2.12.1.2 2007/12/28 14:58:43 roberto Exp $
+** Auxiliary functions to manipulate prototypes and closures
+** See Copyright Notice in lua.h
+*/
+
+
+#include <stddef.h>
+
+#define lfunc_c
+#define LUA_CORE
+
+#include "lua.h"
+
+#include "lfunc.h"
+#include "lgc.h"
+#include "lmem.h"
+#include "lobject.h"
+#include "lstate.h"
+
+
+
+Closure *luaF_newCclosure (lua_State *L, int nelems, Table *e) {
+  Closure *c = cast(Closure *, luaM_malloc(L, sizeCclosure(nelems)));
+  luaC_link(L, obj2gco(c), LUA_TFUNCTION);
+  c->c.isC = 1;
+  c->c.env = e;
+  c->c.nupvalues = cast_byte(nelems);
+  return c;
+}
+
+
+Closure *luaF_newLclosure (lua_State *L, int nelems, Table *e) {
+  Closure *c = cast(Closure *, luaM_malloc(L, sizeLclosure(nelems)));
+  luaC_link(L, obj2gco(c), LUA_TFUNCTION);
+  c->l.isC = 0;
+  c->l.env = e;
+  c->l.nupvalues = cast_byte(nelems);
+  while (nelems--) c->l.upvals[nelems] = NULL;
+  return c;
+}
+
+
+UpVal *luaF_newupval (lua_State *L) {
+  UpVal *uv = luaM_new(L, UpVal);
+  luaC_link(L, obj2gco(uv), LUA_TUPVAL);
+  uv->v = &uv->u.value;
+  setnilvalue(uv->v);
+  return uv;
+}
+
+
+UpVal *luaF_findupval (lua_State *L, StkId level) {
+  global_State *g = G(L);
+  GCObject **pp = &L->openupval;
+  UpVal *p;
+  UpVal *uv;
+  while (*pp != NULL && (p = ngcotouv(*pp))->v >= level) {
+    lua_assert(p->v != &p->u.value);
+    if (p->v == level) {  /* found a corresponding upvalue? */
+      if (isdead(g, obj2gco(p)))  /* is it dead? */
+        changewhite(obj2gco(p));  /* ressurect it */
+      return p;
+    }
+    pp = &p->next;
+  }
+  uv = luaM_new(L, UpVal);  /* not found: create a new one */
+  uv->tt = LUA_TUPVAL;
+  uv->v = level;  /* current value lives in the stack */
+  uv->next = *pp;  /* chain it in the proper position */
+  *pp = obj2gco(uv);
+  uv->u.l.prev = &g->uvhead;  /* double link it in `uvhead' list */
+  uv->u.l.next = g->uvhead.u.l.next;
+  uv->u.l.next->u.l.prev = uv;
+  g->uvhead.u.l.next = uv;
+  luaC_marknew(L, obj2gco(uv));
+  lua_assert(uv->u.l.next->u.l.prev == uv && uv->u.l.prev->u.l.next == uv);
+  return uv;
+}
+
+
+static void unlinkupval (UpVal *uv) {
+  lua_assert(uv->u.l.next->u.l.prev == uv && uv->u.l.prev->u.l.next == uv);
+  uv->u.l.next->u.l.prev = uv->u.l.prev;  /* remove from `uvhead' list */
+  uv->u.l.prev->u.l.next = uv->u.l.next;
+}
+
+
+void luaF_freeupval (lua_State *L, UpVal *uv) {
+  if (uv->v != &uv->u.value)  /* is it open? */
+    unlinkupval(uv);  /* remove from open list */
+  luaM_free(L, uv);  /* free upvalue */
+}
+
+
+void luaF_close (lua_State *L, StkId level) {
+  UpVal *uv;
+  global_State *g = G(L);
+  while (L->openupval != NULL && (uv = ngcotouv(L->openupval))->v >= level) {
+    GCObject *o = obj2gco(uv);
+    lua_assert(!isblack(o) && uv->v != &uv->u.value);
+    L->openupval = uv->next;  /* remove from `open' list */
+    if (isdead(g, o))
+      luaF_freeupval(L, uv);  /* free upvalue */
+    else {
+      unlinkupval(uv);
+      setobj(L, &uv->u.value, uv->v);
+      uv->v = &uv->u.value;  /* now current value lives here */
+      luaC_linkupval(L, uv);  /* link upvalue into `gcroot' list */
+    }
+  }
+}
+
+
+Proto *luaF_newproto (lua_State *L) {
+  Proto *f = luaM_new(L, Proto);
+  luaC_link(L, obj2gco(f), LUA_TPROTO);
+  f->k = NULL;
+  f->sizek = 0;
+  f->p = NULL;
+  f->sizep = 0;
+  f->code = NULL;
+  f->sizecode = 0;
+  f->sizelineinfo = 0;
+  f->sizeupvalues = 0;
+  f->nups = 0;
+  f->upvalues = NULL;
+  f->numparams = 0;
+  f->is_vararg = 0;
+  f->maxstacksize = 0;
+  f->lineinfo = NULL;
+  f->sizelocvars = 0;
+  f->locvars = NULL;
+  f->linedefined = 0;
+  f->lastlinedefined = 0;
+  f->source = NULL;
+  return f;
+}
+
+
+void luaF_freeproto (lua_State *L, Proto *f) {
+  luaM_freearray(L, f->p, f->sizep, Proto *);
+  luaM_freearray(L, f->k, f->sizek, TValue);
+  luaM_freearray(L, f->locvars, f->sizelocvars, struct LocVar);
+  luaM_freearray(L, f->upvalues, f->sizeupvalues, TString *);
+  if (!proto_is_readonly(f)) {
+    luaM_freearray(L, f->code, f->sizecode, Instruction);
+    luaM_freearray(L, f->lineinfo, f->sizelineinfo, int);
+  }
+  luaM_free(L, f);
+}
+
+
+void luaF_freeclosure (lua_State *L, Closure *c) {
+  int size = (c->c.isC) ? sizeCclosure(c->c.nupvalues) :
+                          sizeLclosure(c->l.nupvalues);
+  luaM_freemem(L, c, size);
+}
+
+
+/*
+** Look for n-th local variable at line `line' in function `func'.
+** Returns NULL if not found.
+*/
+const char *luaF_getlocalname (const Proto *f, int local_number, int pc) {
+  int i;
+  for (i = 0; i<f->sizelocvars && f->locvars[i].startpc <= pc; i++) {
+    if (pc < f->locvars[i].endpc) {  /* is variable active? */
+      local_number--;
+      if (local_number == 0)
+        return getstr(f->locvars[i].varname);
+    }
+  }
+  return NULL;  /* not found */
+}
+

components/external/lua/lua/lfunc.h

@@ -0,0 +1,37 @@
+/*
+** $Id: lfunc.h,v 2.4.1.1 2007/12/27 13:02:25 roberto Exp $
+** Auxiliary functions to manipulate prototypes and closures
+** See Copyright Notice in lua.h
+*/
+
+#ifndef lfunc_h
+#define lfunc_h
+
+
+#include "lobject.h"
+
+#include "lgc.h"
+
+#define sizeCclosure(n)	(cast(int, sizeof(CClosure)) + \
+                         cast(int, sizeof(TValue)*((n)-1)))
+
+#define sizeLclosure(n)	(cast(int, sizeof(LClosure)) + \
+                         cast(int, sizeof(TValue *)*((n)-1)))
+
+#define proto_readonly(p) l_setbit((p)->marked, READONLYBIT)
+#define proto_is_readonly(p) testbit((p)->marked, READONLYBIT)
+
+LUAI_FUNC Proto *luaF_newproto (lua_State *L);
+LUAI_FUNC Closure *luaF_newCclosure (lua_State *L, int nelems, Table *e);
+LUAI_FUNC Closure *luaF_newLclosure (lua_State *L, int nelems, Table *e);
+LUAI_FUNC UpVal *luaF_newupval (lua_State *L);
+LUAI_FUNC UpVal *luaF_findupval (lua_State *L, StkId level);
+LUAI_FUNC void luaF_close (lua_State *L, StkId level);
+LUAI_FUNC void luaF_freeproto (lua_State *L, Proto *f);
+LUAI_FUNC void luaF_freeclosure (lua_State *L, Closure *c);
+LUAI_FUNC void luaF_freeupval (lua_State *L, UpVal *uv);
+LUAI_FUNC const char *luaF_getlocalname (const Proto *func, int local_number,
+                                         int pc);
+
+
+#endif

components/external/lua/lua/lgc.h

@@ -0,0 +1,136 @@
+/*
+** $Id: lgc.h,v 2.15.1.1 2007/12/27 13:02:25 roberto Exp $
+** Garbage Collector
+** See Copyright Notice in lua.h
+*/
+
+#ifndef lgc_h
+#define lgc_h
+
+
+#include "lobject.h"
+
+
+/*
+** Possible states of the Garbage Collector
+*/
+#define GCSpause	0
+#define GCSpropagate	1
+#define GCSsweepstring	2
+#define GCSsweep	3
+#define GCSfinalize	4
+
+
+/*
+** some userful bit tricks
+*/
+#define resetbits(x,m)	((x) &= cast(lu_byte, ~(m)))
+#define setbits(x,m)	((x) |= (m))
+#define testbits(x,m)	((x) & (m))
+#define bitmask(b)	(1<<(b))
+#define bit2mask(b1,b2)	(bitmask(b1) | bitmask(b2))
+#define l_setbit(x,b)	setbits(x, bitmask(b))
+#define resetbit(x,b)	resetbits(x, bitmask(b))
+#define testbit(x,b)	testbits(x, bitmask(b))
+#define set2bits(x,b1,b2)	setbits(x, (bit2mask(b1, b2)))
+#define reset2bits(x,b1,b2)	resetbits(x, (bit2mask(b1, b2)))
+#define test2bits(x,b1,b2)	testbits(x, (bit2mask(b1, b2)))
+
+
+/*
+** Possible Garbage Collector flags.
+** Layout for bit use in 'gsflags' field in global_State structure.
+** bit 0 - Protect GC from recursive calls.
+** bit 1 - Don't try to shrink string table if EGC was called during a string table resize.
+*/
+#define GCFlagsNone          0
+#define GCBlockGCBit         0
+#define GCResizingStringsBit 1
+
+
+#define is_block_gc(L)    testbit(G(L)->gcflags, GCBlockGCBit)
+#define set_block_gc(L)   l_setbit(G(L)->gcflags, GCBlockGCBit)
+#define unset_block_gc(L) resetbit(G(L)->gcflags, GCBlockGCBit)
+#define is_resizing_strings_gc(L)    testbit(G(L)->gcflags, GCResizingStringsBit)
+#define set_resizing_strings_gc(L)   l_setbit(G(L)->gcflags, GCResizingStringsBit)
+#define unset_resizing_strings_gc(L) resetbit(G(L)->gcflags, GCResizingStringsBit)
+
+/*
+** Layout for bit use in `marked' field:
+** bit 0 - object is white (type 0)
+** bit 1 - object is white (type 1)
+** bit 2 - object is black
+** bit 3 - for thread: Don't resize thread's stack
+** bit 3 - for userdata: has been finalized
+** bit 3 - for tables: has weak keys
+** bit 4 - for tables: has weak values
+** bit 5 - object is fixed (should not be collected)
+** bit 6 - object is "super" fixed (only the main thread)
+** bit 7 - object is (partially) stored in read-only memory
+*/
+
+
+#define WHITE0BIT	0
+#define WHITE1BIT	1
+#define BLACKBIT	2
+#define FIXEDSTACKBIT	3
+#define FINALIZEDBIT	3
+#define KEYWEAKBIT	3
+#define VALUEWEAKBIT	4
+#define FIXEDBIT	5
+#define SFIXEDBIT	6
+#define READONLYBIT 7
+#define WHITEBITS	bit2mask(WHITE0BIT, WHITE1BIT)
+
+
+#define iswhite(x)      test2bits((x)->gch.marked, WHITE0BIT, WHITE1BIT)
+#define isblack(x)      testbit((x)->gch.marked, BLACKBIT)
+#define isgray(x)	(!isblack(x) && !iswhite(x))
+
+#define otherwhite(g)	(g->currentwhite ^ WHITEBITS)
+#define isdead(g,v)	((v)->gch.marked & otherwhite(g) & WHITEBITS)
+
+#define changewhite(x)	((x)->gch.marked ^= WHITEBITS)
+#define gray2black(x)	l_setbit((x)->gch.marked, BLACKBIT)
+
+#define valiswhite(x)	(iscollectable(x) && iswhite(gcvalue(x)))
+
+#define luaC_white(g)	cast(lu_byte, (g)->currentwhite & WHITEBITS)
+
+#define isfixedstack(x)	testbit((x)->marked, FIXEDSTACKBIT)
+#define fixedstack(x)	l_setbit((x)->marked, FIXEDSTACKBIT)
+#define unfixedstack(x)	resetbit((x)->marked, FIXEDSTACKBIT)
+
+#define luaC_checkGC(L) { \
+  condhardstacktests(luaD_reallocstack(L, L->stacksize - EXTRA_STACK - 1)); \
+  if (G(L)->totalbytes >= G(L)->GCthreshold) \
+	luaC_step(L); }
+
+
+#define luaC_barrier(L,p,v) { if (valiswhite(v) && isblack(obj2gco(p)))  \
+	luaC_barrierf(L,obj2gco(p),gcvalue(v)); }
+
+#define luaC_barriert(L,t,v) { if (valiswhite(v) && isblack(obj2gco(t)))  \
+	luaC_barrierback(L,t); }
+
+#define luaC_objbarrier(L,p,o)  \
+	{ if (iswhite(obj2gco(o)) && isblack(obj2gco(p))) \
+		luaC_barrierf(L,obj2gco(p),obj2gco(o)); }
+
+#define luaC_objbarriert(L,t,o)  \
+   { if (iswhite(obj2gco(o)) && isblack(obj2gco(t))) luaC_barrierback(L,t); }
+
+LUAI_FUNC size_t luaC_separateudata (lua_State *L, int all);
+LUAI_FUNC void luaC_callGCTM (lua_State *L);
+LUAI_FUNC void luaC_freeall (lua_State *L);
+LUAI_FUNC void luaC_step (lua_State *L);
+LUAI_FUNC void luaC_fullgc (lua_State *L);
+LUAI_FUNC int luaC_sweepstrgc (lua_State *L);
+LUAI_FUNC void luaC_marknew (lua_State *L, GCObject *o);
+LUAI_FUNC void luaC_link (lua_State *L, GCObject *o, lu_byte tt);
+LUAI_FUNC void luaC_linkupval (lua_State *L, UpVal *uv);
+LUAI_FUNC void luaC_barrierf (lua_State *L, GCObject *o, GCObject *v);
+LUAI_FUNC void luaC_barrierback (lua_State *L, Table *t);
+
+
+#endif

components/external/lua/lua/linit.c

@@ -0,0 +1,79 @@
+/*
+** $Id: linit.c,v 1.14.1.1 2007/12/27 13:02:25 roberto Exp $
+** Initialization of libraries for lua.c
+** See Copyright Notice in lua.h
+*/
+
+
+#define linit_c
+#define LUA_LIB
+
+#include "lua.h"
+
+#include "lualib.h"
+#include "lauxlib.h"
+#include "lrotable.h"
+#include "luaconf.h"
+
+#if defined(RT_LUA_USE_EXLIBS)
+#include "lexlibs.h"
+#endif
+
+#if defined(LUA_EXLIBS_ROM)
+#undef _ROM
+#define _ROM( name, openf, table ) extern int openf(lua_State *);
+LUA_EXLIBS_ROM
+#endif
+
+static const luaL_Reg lualibs[] = {
+  {"", luaopen_base},
+  {LUA_LOADLIBNAME, luaopen_package},
+  {LUA_IOLIBNAME, luaopen_io},
+  {LUA_STRLIBNAME, luaopen_string},    
+#if LUA_OPTIMIZE_MEMORY == 0
+  {LUA_MATHLIBNAME, luaopen_math},
+  {LUA_TABLIBNAME, luaopen_table},  
+  {LUA_DBLIBNAME, luaopen_debug},  
+#endif
+#if defined(LUA_EXLIBS_ROM)
+#define _ROM( name, openf, table ) { name, openf },
+  LUA_EXLIBS_ROM
+#endif
+  {NULL, NULL}
+};
+
+extern const luaR_entry strlib[];
+extern const luaR_entry syslib[];
+extern const luaR_entry tab_funcs[];
+extern const luaR_entry dblib[];
+extern const luaR_entry co_funcs[];
+#if defined(LUA_EXLIBS_ROM) && LUA_OPTIMIZE_MEMORY == 2
+#undef _ROM
+#define _ROM( name, openf, table ) extern const luaR_entry table[];
+LUA_EXLIBS_ROM
+#endif
+const luaR_table lua_rotable[] = 
+{
+#if LUA_OPTIMIZE_MEMORY > 0
+  {LUA_STRLIBNAME, strlib},
+  {LUA_TABLIBNAME, tab_funcs},
+  {LUA_DBLIBNAME, dblib},
+  {LUA_COLIBNAME, co_funcs},
+#if defined(LUA_EXLIBS_ROM) && LUA_OPTIMIZE_MEMORY == 2
+#undef _ROM
+#define _ROM( name, openf, table ) { name, table },
+  LUA_EXLIBS_ROM
+#endif
+#endif
+  {NULL, NULL}
+};
+
+LUALIB_API void luaL_openlibs (lua_State *L) {
+  const luaL_Reg *lib = lualibs;
+  for (; lib->func; lib++) {
+    lua_pushcfunction(L, lib->func);
+    lua_pushstring(L, lib->name);
+    lua_call(L, 1, 0);
+  }
+}
+

components/external/lua/lua/llex.c

@@ -0,0 +1,458 @@
+/*
+** $Id: llex.c,v 2.20.1.2 2009/11/23 14:58:22 roberto Exp $
+** Lexical Analyzer
+** See Copyright Notice in lua.h
+*/
+
+
+#include <ctype.h>
+#include <locale.h>
+#include <string.h>
+
+#define llex_c
+#define LUA_CORE
+
+#include "lua.h"
+
+#include "ldo.h"
+#include "llex.h"
+#include "lobject.h"
+#include "lparser.h"
+#include "lstate.h"
+#include "lstring.h"
+#include "ltable.h"
+#include "lzio.h"
+
+
+
+#define next(ls) (ls->current = zgetc(ls->z))
+
+
+
+
+#define currIsNewline(ls)	(ls->current == '\n' || ls->current == '\r')
+
+
+/* ORDER RESERVED */
+const char *const luaX_tokens [] = {
+    "and", "break", "do", "else", "elseif",
+    "end", "false", "for", "function", "if",
+    "in", "local", "nil", "not", "or", "repeat",
+    "return", "then", "true", "until", "while",
+    "..", "...", "==", ">=", "<=", "~=",
+    "<number>", "<name>", "<string>", "<eof>",
+    NULL
+};
+
+
+#define save_and_next(ls) (save(ls, ls->current), next(ls))
+
+
+static void save (LexState *ls, int c) {
+  Mbuffer *b = ls->buff;
+  if (b->n + 1 > b->buffsize) {
+    size_t newsize;
+    if (b->buffsize >= MAX_SIZET/2)
+      luaX_lexerror(ls, "lexical element too long", 0);
+    newsize = b->buffsize * 2;
+    luaZ_resizebuffer(ls->L, b, newsize);
+  }
+  b->buffer[b->n++] = cast(char, c);
+}
+
+
+void luaX_init (lua_State *L) {
+}
+
+
+#define MAXSRC          80
+
+
+const char *luaX_token2str (LexState *ls, int token) {
+  if (token < FIRST_RESERVED) {
+    lua_assert(token == cast(unsigned char, token));
+    return (iscntrl(token)) ? luaO_pushfstring(ls->L, "char(%d)", token) :
+                              luaO_pushfstring(ls->L, "%c", token);
+  }
+  else
+    return luaX_tokens[token-FIRST_RESERVED];
+}
+
+
+static const char *txtToken (LexState *ls, int token) {
+  switch (token) {
+    case TK_NAME:
+    case TK_STRING:
+    case TK_NUMBER:
+      save(ls, '\0');
+      return luaZ_buffer(ls->buff);
+    default:
+      return luaX_token2str(ls, token);
+  }
+}
+
+
+void luaX_lexerror (LexState *ls, const char *msg, int token) {
+  char buff[MAXSRC];
+  luaO_chunkid(buff, getstr(ls->source), MAXSRC);
+  msg = luaO_pushfstring(ls->L, "%s:%d: %s", buff, ls->linenumber, msg);
+  if (token)
+    luaO_pushfstring(ls->L, "%s near " LUA_QS, msg, txtToken(ls, token));
+  luaD_throw(ls->L, LUA_ERRSYNTAX);
+}
+
+
+void luaX_syntaxerror (LexState *ls, const char *msg) {
+  luaX_lexerror(ls, msg, ls->t.token);
+}
+
+
+TString *luaX_newstring (LexState *ls, const char *str, size_t l) {
+  lua_State *L = ls->L;
+  TString *ts = luaS_newlstr(L, str, l);
+  TValue *o = luaH_setstr(L, ls->fs->h, ts);  /* entry for `str' */
+  if (ttisnil(o)) {
+    setbvalue(o, 1);  /* make sure `str' will not be collected */
+    luaC_checkGC(L);
+  }
+  return ts;
+}
+
+
+static void inclinenumber (LexState *ls) {
+  int old = ls->current;
+  lua_assert(currIsNewline(ls));
+  next(ls);  /* skip `\n' or `\r' */
+  if (currIsNewline(ls) && ls->current != old)
+    next(ls);  /* skip `\n\r' or `\r\n' */
+  if (++ls->linenumber >= MAX_INT)
+    luaX_syntaxerror(ls, "chunk has too many lines");
+}
+
+
+void luaX_setinput (lua_State *L, LexState *ls, ZIO *z, TString *source) {
+  ls->decpoint = '.';
+  ls->L = L;
+  ls->lookahead.token = TK_EOS;  /* no look-ahead token */
+  ls->z = z;
+  ls->fs = NULL;
+  ls->linenumber = 1;
+  ls->lastline = 1;
+  ls->source = source;
+  luaZ_resizebuffer(ls->L, ls->buff, LUA_MINBUFFER);  /* initialize buffer */
+  next(ls);  /* read first char */
+}
+
+
+
+/*
+** =======================================================
+** LEXICAL ANALYZER
+** =======================================================
+*/
+
+
+
+static int check_next (LexState *ls, const char *set) {
+  if (!strchr(set, ls->current))
+    return 0;
+  save_and_next(ls);
+  return 1;
+}
+
+
+static void buffreplace (LexState *ls, char from, char to) {
+  size_t n = luaZ_bufflen(ls->buff);
+  char *p = luaZ_buffer(ls->buff);
+  while (n--)
+    if (p[n] == from) p[n] = to;
+}
+
+
+static void trydecpoint (LexState *ls, SemInfo *seminfo) {
+  /* format error: try to update decimal point separator */
+  struct lconv *cv = localeconv();
+  char old = ls->decpoint;
+  ls->decpoint = (cv ? cv->decimal_point[0] : '.');
+  buffreplace(ls, old, ls->decpoint);  /* try updated decimal separator */
+  if (!luaO_str2d(luaZ_buffer(ls->buff), &seminfo->r)) {
+    /* format error with correct decimal point: no more options */
+    buffreplace(ls, ls->decpoint, '.');  /* undo change (for error message) */
+    luaX_lexerror(ls, "malformed number", TK_NUMBER);
+  }
+}
+
+
+/* LUA_NUMBER */
+static void read_numeral (LexState *ls, SemInfo *seminfo) {
+  lua_assert(isdigit(ls->current));
+  do {
+    save_and_next(ls);
+  } while (isdigit(ls->current) || ls->current == '.');
+  if (check_next(ls, "Ee"))  /* `E'? */
+    check_next(ls, "+-");  /* optional exponent sign */
+  while (isalnum(ls->current) || ls->current == '_')
+    save_and_next(ls);
+  save(ls, '\0');
+  buffreplace(ls, '.', ls->decpoint);  /* follow locale for decimal point */
+  if (!luaO_str2d(luaZ_buffer(ls->buff), &seminfo->r))  /* format error? */
+    trydecpoint(ls, seminfo); /* try to update decimal point separator */
+}
+
+
+static int skip_sep (LexState *ls) {
+  int count = 0;
+  int s = ls->current;
+  lua_assert(s == '[' || s == ']');
+  save_and_next(ls);
+  while (ls->current == '=') {
+    save_and_next(ls);
+    count++;
+  }
+  return (ls->current == s) ? count : (-count) - 1;
+}
+
+
+static void read_long_string (LexState *ls, SemInfo *seminfo, int sep) {
+  int cont = 0;
+  (void)(cont);  /* avoid warnings when `cont' is not used */
+  save_and_next(ls);  /* skip 2nd `[' */
+  if (currIsNewline(ls))  /* string starts with a newline? */
+    inclinenumber(ls);  /* skip it */
+  for (;;) {
+    switch (ls->current) {
+      case EOZ:
+        luaX_lexerror(ls, (seminfo) ? "unfinished long string" :
+                                   "unfinished long comment", TK_EOS);
+        break;  /* to avoid warnings */
+#if defined(LUA_COMPAT_LSTR)
+      case '[': {
+        if (skip_sep(ls) == sep) {
+          save_and_next(ls);  /* skip 2nd `[' */
+          cont++;
+#if LUA_COMPAT_LSTR == 1
+          if (sep == 0)
+            luaX_lexerror(ls, "nesting of [[...]] is deprecated", '[');
+#endif
+        }
+        break;
+      }
+#endif
+      case ']': {
+        if (skip_sep(ls) == sep) {
+          save_and_next(ls);  /* skip 2nd `]' */
+#if defined(LUA_COMPAT_LSTR) && LUA_COMPAT_LSTR == 2
+          cont--;
+          if (sep == 0 && cont >= 0) break;
+#endif
+          goto endloop;
+        }
+        break;
+      }
+      case '\n':
+      case '\r': {
+        save(ls, '\n');
+        inclinenumber(ls);
+        if (!seminfo) luaZ_resetbuffer(ls->buff);  /* avoid wasting space */
+        break;
+      }
+      default: {
+        if (seminfo) save_and_next(ls);
+        else next(ls);
+      }
+    }
+  } endloop:
+  if (seminfo)
+    seminfo->ts = luaX_newstring(ls, luaZ_buffer(ls->buff) + (2 + sep),
+                                     luaZ_bufflen(ls->buff) - 2*(2 + sep));
+}
+
+
+static void read_string (LexState *ls, int del, SemInfo *seminfo) {
+  save_and_next(ls);
+  while (ls->current != del) {
+    switch (ls->current) {
+      case EOZ:
+        luaX_lexerror(ls, "unfinished string", TK_EOS);
+        continue;  /* to avoid warnings */
+      case '\n':
+      case '\r':
+        luaX_lexerror(ls, "unfinished string", TK_STRING);
+        continue;  /* to avoid warnings */
+      case '\\': {
+        int c;
+        next(ls);  /* do not save the `\' */
+        switch (ls->current) {
+          case 'a': c = '\a'; break;
+          case 'b': c = '\b'; break;
+          case 'f': c = '\f'; break;
+          case 'n': c = '\n'; break;
+          case 'r': c = '\r'; break;
+          case 't': c = '\t'; break;
+          case 'v': c = '\v'; break;
+          case '\n':  /* go through */
+          case '\r': save(ls, '\n'); inclinenumber(ls); continue;
+          case EOZ: continue;  /* will raise an error next loop */
+          default: {
+            if (!isdigit(ls->current))
+              save_and_next(ls);  /* handles \\, \", \', and \? */
+            else {  /* \xxx */
+              int i = 0;
+              c = 0;
+              do {
+                c = 10*c + (ls->current-'0');
+                next(ls);
+              } while (++i<3 && isdigit(ls->current));
+              if (c > UCHAR_MAX)
+                luaX_lexerror(ls, "escape sequence too large", TK_STRING);
+              save(ls, c);
+            }
+            continue;
+          }
+        }
+        save(ls, c);
+        next(ls);
+        continue;
+      }
+      default:
+        save_and_next(ls);
+    }
+  }
+  save_and_next(ls);  /* skip delimiter */
+  seminfo->ts = luaX_newstring(ls, luaZ_buffer(ls->buff) + 1,
+                                   luaZ_bufflen(ls->buff) - 2);
+}
+
+
+static int llex (LexState *ls, SemInfo *seminfo) {
+  luaZ_resetbuffer(ls->buff);
+  for (;;) {
+    switch (ls->current) {
+      case '\n':
+      case '\r': {
+        inclinenumber(ls);
+        continue;
+      }
+      case '-': {
+        next(ls);
+        if (ls->current != '-') return '-';
+        /* else is a comment */
+        next(ls);
+        if (ls->current == '[') {
+          int sep = skip_sep(ls);
+          luaZ_resetbuffer(ls->buff);  /* `skip_sep' may dirty the buffer */
+          if (sep >= 0) {
+            read_long_string(ls, NULL, sep);  /* long comment */
+            luaZ_resetbuffer(ls->buff);
+            continue;
+          }
+        }
+        /* else short comment */
+        while (!currIsNewline(ls) && ls->current != EOZ)
+          next(ls);
+        continue;
+      }
+      case '[': {
+        int sep = skip_sep(ls);
+        if (sep >= 0) {
+          read_long_string(ls, seminfo, sep);
+          return TK_STRING;
+        }
+        else if (sep == -1) return '[';
+        else luaX_lexerror(ls, "invalid long string delimiter", TK_STRING);
+      }
+      case '=': {
+        next(ls);
+        if (ls->current != '=') return '=';
+        else { next(ls); return TK_EQ; }
+      }
+      case '<': {
+        next(ls);
+        if (ls->current != '=') return '<';
+        else { next(ls); return TK_LE; }
+      }
+      case '>': {
+        next(ls);
+        if (ls->current != '=') return '>';
+        else { next(ls); return TK_GE; }
+      }
+      case '~': {
+        next(ls);
+        if (ls->current != '=') return '~';
+        else { next(ls); return TK_NE; }
+      }
+      case '"':
+      case '\'': {
+        read_string(ls, ls->current, seminfo);
+        return TK_STRING;
+      }
+      case '.': {
+        save_and_next(ls);
+        if (check_next(ls, ".")) {
+          if (check_next(ls, "."))
+            return TK_DOTS;   /* ... */
+          else return TK_CONCAT;   /* .. */
+        }
+        else if (!isdigit(ls->current)) return '.';
+        else {
+          read_numeral(ls, seminfo);
+          return TK_NUMBER;
+        }
+      }
+      case EOZ: {
+        return TK_EOS;
+      }
+      default: {
+        if (isspace(ls->current)) {
+          lua_assert(!currIsNewline(ls));
+          next(ls);
+          continue;
+        }
+        else if (isdigit(ls->current)) {
+          read_numeral(ls, seminfo);
+          return TK_NUMBER;
+        }
+        else if (isalpha(ls->current) || ls->current == '_') {
+          /* identifier or reserved word */
+          TString *ts;
+          int i;
+          do {
+            save_and_next(ls);
+          } while (isalnum(ls->current) || ls->current == '_');
+          /* look for reserved word */
+          save(ls, '\0');
+          for (i = 0; i < NUM_RESERVED; i++)
+            if (!strcmp(luaX_tokens[i], luaZ_buffer(ls->buff)))
+              return i + FIRST_RESERVED;
+          ts = luaX_newstring(ls, luaZ_buffer(ls->buff),
+                                  luaZ_bufflen(ls->buff) - 1);
+          seminfo->ts = ts;
+          return TK_NAME;
+        }
+        else {
+          int c = ls->current;
+          next(ls);
+          return c;  /* single-char tokens (+ - / ...) */
+        }
+      }
+    }
+  }
+}
+
+
+void luaX_next (LexState *ls) {
+  ls->lastline = ls->linenumber;
+  if (ls->lookahead.token != TK_EOS) {  /* is there a look-ahead token? */
+    ls->t = ls->lookahead;  /* use this one */
+    ls->lookahead.token = TK_EOS;  /* and discharge it */
+  }
+  else
+    ls->t.token = llex(ls, &ls->t.seminfo);  /* read next token */
+}
+
+
+void luaX_lookahead (LexState *ls) {
+  lua_assert(ls->lookahead.token == TK_EOS);
+  ls->lookahead.token = llex(ls, &ls->lookahead.seminfo);
+}
+

components/external/lua/lua/llex.h

@@ -0,0 +1,81 @@
+/*
+** $Id: llex.h,v 1.58.1.1 2007/12/27 13:02:25 roberto Exp $
+** Lexical Analyzer
+** See Copyright Notice in lua.h
+*/
+
+#ifndef llex_h
+#define llex_h
+
+#include "lobject.h"
+#include "lzio.h"
+
+
+#define FIRST_RESERVED	257
+
+/* maximum length of a reserved word */
+#define TOKEN_LEN	(sizeof("function")/sizeof(char))
+
+
+/*
+* WARNING: if you change the order of this enumeration,
+* grep "ORDER RESERVED"
+*/
+enum RESERVED {
+  /* terminal symbols denoted by reserved words */
+  TK_AND = FIRST_RESERVED, TK_BREAK,
+  TK_DO, TK_ELSE, TK_ELSEIF, TK_END, TK_FALSE, TK_FOR, TK_FUNCTION,
+  TK_IF, TK_IN, TK_LOCAL, TK_NIL, TK_NOT, TK_OR, TK_REPEAT,
+  TK_RETURN, TK_THEN, TK_TRUE, TK_UNTIL, TK_WHILE,
+  /* other terminal symbols */
+  TK_CONCAT, TK_DOTS, TK_EQ, TK_GE, TK_LE, TK_NE, TK_NUMBER,
+  TK_NAME, TK_STRING, TK_EOS
+};
+
+/* number of reserved words */
+#define NUM_RESERVED	(cast(int, TK_WHILE-FIRST_RESERVED+1))
+
+
+/* array with token `names' */
+LUAI_DATA const char *const luaX_tokens [];
+
+
+typedef union {
+  lua_Number r;
+  TString *ts;
+} SemInfo;  /* semantics information */
+
+
+typedef struct Token {
+  int token;
+  SemInfo seminfo;
+} Token;
+
+
+typedef struct LexState {
+  int current;  /* current character (charint) */
+  int linenumber;  /* input line counter */
+  int lastline;  /* line of last token `consumed' */
+  Token t;  /* current token */
+  Token lookahead;  /* look ahead token */
+  struct FuncState *fs;  /* `FuncState' is private to the parser */
+  struct lua_State *L;
+  ZIO *z;  /* input stream */
+  Mbuffer *buff;  /* buffer for tokens */
+  TString *source;  /* current source name */
+  char decpoint;  /* locale decimal point */
+} LexState;
+
+
+LUAI_FUNC void luaX_init (lua_State *L);
+LUAI_FUNC void luaX_setinput (lua_State *L, LexState *ls, ZIO *z,
+                              TString *source);
+LUAI_FUNC TString *luaX_newstring (LexState *ls, const char *str, size_t l);
+LUAI_FUNC void luaX_next (LexState *ls);
+LUAI_FUNC void luaX_lookahead (LexState *ls);
+LUAI_FUNC void luaX_lexerror (LexState *ls, const char *msg, int token);
+LUAI_FUNC void luaX_syntaxerror (LexState *ls, const char *s);
+LUAI_FUNC const char *luaX_token2str (LexState *ls, int token);
+
+
+#endif

components/external/lua/lua/llimits.h

@@ -0,0 +1,128 @@
+/*
+** $Id: llimits.h,v 1.69.1.1 2007/12/27 13:02:25 roberto Exp $
+** Limits, basic types, and some other `installation-dependent' definitions
+** See Copyright Notice in lua.h
+*/
+
+#ifndef llimits_h
+#define llimits_h
+
+
+#include <limits.h>
+#include <stddef.h>
+
+
+#include "lua.h"
+
+
+typedef LUAI_UINT32 lu_int32;
+
+typedef LUAI_UMEM lu_mem;
+
+typedef LUAI_MEM l_mem;
+
+
+
+/* chars used as small naturals (so that `char' is reserved for characters) */
+typedef unsigned char lu_byte;
+
+
+#define MAX_SIZET	((size_t)(~(size_t)0)-2)
+
+#define MAX_LUMEM	((lu_mem)(~(lu_mem)0)-2)
+
+
+#define MAX_INT (INT_MAX-2)  /* maximum value of an int (-2 for safety) */
+
+/*
+** conversion of pointer to integer
+** this is for hashing only; there is no problem if the integer
+** cannot hold the whole pointer value
+*/
+#define IntPoint(p)  ((unsigned int)(lu_mem)(p))
+
+
+
+/* type to ensure maximum alignment */
+typedef LUAI_USER_ALIGNMENT_T L_Umaxalign;
+
+
+/* result of a `usual argument conversion' over lua_Number */
+typedef LUAI_UACNUMBER l_uacNumber;
+
+
+/* internal assertions for in-house debugging */
+#ifdef lua_assert
+
+#define check_exp(c,e)		(lua_assert(c), (e))
+#define api_check(l,e)		lua_assert(e)
+
+#else
+
+#define lua_assert(c)		((void)0)
+#define check_exp(c,e)		(e)
+#define api_check		luai_apicheck
+
+#endif
+
+
+#ifndef UNUSED
+#define UNUSED(x)	((void)(x))	/* to avoid warnings */
+#endif
+
+
+#ifndef cast
+#define cast(t, exp)	((t)(exp))
+#endif
+
+#define cast_byte(i)	cast(lu_byte, (i))
+#define cast_num(i)	cast(lua_Number, (i))
+#define cast_int(i)	cast(int, (i))
+
+
+
+/*
+** type for virtual-machine instructions
+** must be an unsigned with (at least) 4 bytes (see details in lopcodes.h)
+*/
+typedef lu_int32 Instruction;
+
+
+
+/* maximum stack for a Lua function */
+#define MAXSTACK	250
+
+
+
+/* minimum size for the string table (must be power of 2) */
+#ifndef MINSTRTABSIZE
+#define MINSTRTABSIZE	32
+#endif
+
+
+/* minimum size for string buffer */
+#ifndef LUA_MINBUFFER
+#define LUA_MINBUFFER	32
+#endif
+
+
+#ifndef lua_lock
+#define lua_lock(L)     ((void) 0) 
+#define lua_unlock(L)   ((void) 0)
+#endif
+
+#ifndef luai_threadyield
+#define luai_threadyield(L)     {lua_unlock(L); lua_lock(L);}
+#endif
+
+
+/*
+** macro to control inclusion of some hard tests on stack reallocation
+*/ 
+#ifndef HARDSTACKTESTS
+#define condhardstacktests(x)	((void)0)
+#else
+#define condhardstacktests(x)	x
+#endif
+
+#endif

components/external/lua/lua/lmathlib.c

@@ -0,0 +1,394 @@
+/*
+** $Id: lmathlib.c,v 1.67.1.1 2007/12/27 13:02:25 roberto Exp $
+** Standard mathematical library
+** See Copyright Notice in lua.h
+*/
+
+
+#include <stdlib.h>
+#include <math.h>
+
+#define lmathlib_c
+#define LUA_LIB
+
+#include "lua.h"
+
+#include "lauxlib.h"
+#include "lualib.h"
+#include "lrotable.h"
+
+#undef PI
+#define PI (3.14159265358979323846)
+#define RADIANS_PER_DEGREE (PI/180.0)
+
+
+
+static int math_abs (lua_State *L) {
+#ifdef LUA_NUMBER_INTEGRAL
+  lua_Number x = luaL_checknumber(L, 1);
+  if (x < 0) x = -x;	//fails for -2^31
+  lua_pushnumber(L, x);
+#else
+  lua_pushnumber(L, fabs(luaL_checknumber(L, 1)));
+#endif
+  return 1;
+}
+
+#ifndef LUA_NUMBER_INTEGRAL
+
+static int math_sin (lua_State *L) {
+  lua_pushnumber(L, sin(luaL_checknumber(L, 1)));
+  return 1;
+}
+
+static int math_sinh (lua_State *L) {
+  lua_pushnumber(L, sinh(luaL_checknumber(L, 1)));
+  return 1;
+}
+
+static int math_cos (lua_State *L) {
+  lua_pushnumber(L, cos(luaL_checknumber(L, 1)));
+  return 1;
+}
+
+static int math_cosh (lua_State *L) {
+  lua_pushnumber(L, cosh(luaL_checknumber(L, 1)));
+  return 1;
+}
+
+static int math_tan (lua_State *L) {
+  lua_pushnumber(L, tan(luaL_checknumber(L, 1)));
+  return 1;
+}
+
+static int math_tanh (lua_State *L) {
+  lua_pushnumber(L, tanh(luaL_checknumber(L, 1)));
+  return 1;
+}
+
+static int math_asin (lua_State *L) {
+  lua_pushnumber(L, asin(luaL_checknumber(L, 1)));
+  return 1;
+}
+
+static int math_acos (lua_State *L) {
+  lua_pushnumber(L, acos(luaL_checknumber(L, 1)));
+  return 1;
+}
+
+static int math_atan (lua_State *L) {
+  lua_pushnumber(L, atan(luaL_checknumber(L, 1)));
+  return 1;
+}
+
+static int math_atan2 (lua_State *L) {
+  lua_pushnumber(L, atan2(luaL_checknumber(L, 1), luaL_checknumber(L, 2)));
+  return 1;
+}
+
+static int math_ceil (lua_State *L) {
+  lua_pushnumber(L, ceil(luaL_checknumber(L, 1)));
+  return 1;
+}
+
+static int math_floor (lua_State *L) {
+  lua_pushnumber(L, floor(luaL_checknumber(L, 1)));
+  return 1;
+}
+
+static int math_fmod (lua_State *L) {
+  lua_pushnumber(L, fmod(luaL_checknumber(L, 1), luaL_checknumber(L, 2)));
+  return 1;
+}
+
+static int math_modf (lua_State *L) {
+  double ip;
+  double fp = modf(luaL_checknumber(L, 1), &ip);
+  lua_pushnumber(L, ip);
+  lua_pushnumber(L, fp);
+  return 2;
+}
+
+#else  // #ifndef LUA_NUMBER_INTEGRAL
+
+// In integer math, floor() and ceil() give the same value;
+// having them in the integer library allows you to write code that
+// works in both integer and floating point versions of Lua.
+// This identity function is used for them.
+
+static int math_identity (lua_State *L) {
+  lua_pushnumber(L, luaL_checknumber(L, 1));
+  return 1;
+}
+
+#endif // #ifndef LUA_NUMBER_INTEGRAL
+
+#ifdef LUA_NUMBER_INTEGRAL
+// Integer square root for integer version
+static lua_Number isqrt(lua_Number x)
+{
+  lua_Number op, res, one;
+
+  op = x; res = 0;
+
+  /* "one" starts at the highest power of four <= than the argument. */
+  one = 1 << 30;  /* second-to-top bit set */
+  while (one > op) one >>= 2;
+
+  while (one != 0) {
+    if (op >= res + one) {
+      op = op - (res + one);
+      res = res +  2 * one;
+    }
+    res >>= 1;
+    one >>= 2;
+  }
+  return(res);
+}
+#endif
+
+static int math_sqrt (lua_State *L) {
+#ifdef LUA_NUMBER_INTEGRAL
+  lua_Number x = luaL_checknumber(L, 1);
+  luaL_argcheck(L, 0<=x, 1, "negative");
+  lua_pushnumber(L, isqrt(x));
+#else
+  lua_pushnumber(L, sqrt(luaL_checknumber(L, 1)));
+#endif
+  return 1;
+}
+
+#ifdef LUA_NUMBER_INTEGRAL
+# define pow(a,b) luai_ipow(a,b)
+#endif
+
+static int math_pow (lua_State *L) {
+  lua_pushnumber(L, pow(luaL_checknumber(L, 1), luaL_checknumber(L, 2)));
+  return 1;
+}
+
+#ifdef LUA_NUMBER_INTEGRAL
+# undef pow
+#endif
+
+
+#ifndef LUA_NUMBER_INTEGRAL
+
+static int math_log (lua_State *L) {
+  lua_pushnumber(L, log(luaL_checknumber(L, 1)));
+  return 1;
+}
+
+static int math_log10 (lua_State *L) {
+  lua_pushnumber(L, log10(luaL_checknumber(L, 1)));
+  return 1;
+}
+
+static int math_exp (lua_State *L) {
+  lua_pushnumber(L, exp(luaL_checknumber(L, 1)));
+  return 1;
+}
+
+static int math_deg (lua_State *L) {
+  lua_pushnumber(L, luaL_checknumber(L, 1)/RADIANS_PER_DEGREE);
+  return 1;
+}
+
+static int math_rad (lua_State *L) {
+  lua_pushnumber(L, luaL_checknumber(L, 1)*RADIANS_PER_DEGREE);
+  return 1;
+}
+
+static int math_frexp (lua_State *L) {
+  int e;
+  lua_pushnumber(L, frexp(luaL_checknumber(L, 1), &e));
+  lua_pushinteger(L, e);
+  return 2;
+}
+
+static int math_ldexp (lua_State *L) {
+  lua_pushnumber(L, ldexp(luaL_checknumber(L, 1), luaL_checkint(L, 2)));
+  return 1;
+}
+
+#endif // #ifdef LUA_NUMBER_INTEGRAL
+
+static int math_min (lua_State *L) {
+  int n = lua_gettop(L);  /* number of arguments */
+  lua_Number dmin = luaL_checknumber(L, 1);
+  int i;
+  for (i=2; i<=n; i++) {
+    lua_Number d = luaL_checknumber(L, i);
+    if (d < dmin)
+      dmin = d;
+  }
+  lua_pushnumber(L, dmin);
+  return 1;
+}
+
+
+static int math_max (lua_State *L) {
+  int n = lua_gettop(L);  /* number of arguments */
+  lua_Number dmax = luaL_checknumber(L, 1);
+  int i;
+  for (i=2; i<=n; i++) {
+    lua_Number d = luaL_checknumber(L, i);
+    if (d > dmax)
+      dmax = d;
+  }
+  lua_pushnumber(L, dmax);
+  return 1;
+}
+
+
+#ifdef LUA_NUMBER_INTEGRAL
+
+static int math_random (lua_State *L) {
+  lua_Number r = (lua_Number)(rand()%RAND_MAX);
+
+  switch (lua_gettop(L)) {  /* check number of arguments */
+    case 0: {  /* no arguments */
+      lua_pushnumber(L, 0);  /* Number between 0 and 1 - always 0 with ints */
+      break;
+    }
+    case 1: {  /* only upper limit */
+      int u = luaL_checkint(L, 1);
+      luaL_argcheck(L, 1<=u, 1, "interval is empty");
+      lua_pushnumber(L, (r % u)+1);  /* int between 1 and `u' */
+      break;
+    }
+    case 2: {  /* lower and upper limits */
+      int l = luaL_checkint(L, 1);
+      int u = luaL_checkint(L, 2);
+      luaL_argcheck(L, l<=u, 2, "interval is empty");
+      lua_pushnumber(L, (r%(u-l+1))+l);  /* int between `l' and `u' */
+      break;
+    }
+    default: return luaL_error(L, "wrong number of arguments");
+  }
+  return 1;
+}
+
+#else
+
+static int math_random (lua_State *L) {
+  /* the `%' avoids the (rare) case of r==1, and is needed also because on
+     some systems (SunOS!) `rand()' may return a value larger than RAND_MAX */
+  lua_Number r = (lua_Number)(rand()%RAND_MAX) / (lua_Number)RAND_MAX;
+  switch (lua_gettop(L)) {  /* check number of arguments */
+    case 0: {  /* no arguments */
+      lua_pushnumber(L, r);  /* Number between 0 and 1 */
+      break;
+    }
+    case 1: {  /* only upper limit */
+      int u = luaL_checkint(L, 1);
+      luaL_argcheck(L, 1<=u, 1, "interval is empty");
+      lua_pushnumber(L, floor(r*u)+1);  /* int between 1 and `u' */
+      break;
+    }
+    case 2: {  /* lower and upper limits */
+      int l = luaL_checkint(L, 1);
+      int u = luaL_checkint(L, 2);
+      luaL_argcheck(L, l<=u, 2, "interval is empty");
+      lua_pushnumber(L, floor(r*(u-l+1))+l);  /* int between `l' and `u' */
+      break;
+    }
+    default: return luaL_error(L, "wrong number of arguments");
+  }
+  return 1;
+}
+
+#endif
+
+
+static int math_randomseed (lua_State *L) {
+  srand(luaL_checkint(L, 1));
+  return 0;
+}
+
+#define MIN_OPT_LEVEL 1
+#include "lrodefs.h"
+const LUA_REG_TYPE math_map[] = {
+#ifdef LUA_NUMBER_INTEGRAL
+  {LSTRKEY("abs"),   LFUNCVAL(math_abs)},
+  {LSTRKEY("ceil"),  LFUNCVAL(math_identity)},
+  {LSTRKEY("floor"), LFUNCVAL(math_identity)},
+  {LSTRKEY("max"),   LFUNCVAL(math_max)},
+  {LSTRKEY("min"),   LFUNCVAL(math_min)},
+  {LSTRKEY("pow"),   LFUNCVAL(math_pow)},
+  {LSTRKEY("random"),     LFUNCVAL(math_random)},
+  {LSTRKEY("randomseed"), LFUNCVAL(math_randomseed)},
+  {LSTRKEY("sqrt"),  LFUNCVAL(math_sqrt)},
+#if LUA_OPTIMIZE_MEMORY > 0
+  {LSTRKEY("huge"),  LNUMVAL(LONG_MAX)},
+#endif
+#else
+  {LSTRKEY("abs"),   LFUNCVAL(math_abs)},
+  {LSTRKEY("acos"),  LFUNCVAL(math_acos)},
+  {LSTRKEY("asin"),  LFUNCVAL(math_asin)},
+  {LSTRKEY("atan2"), LFUNCVAL(math_atan2)},
+  {LSTRKEY("atan"),  LFUNCVAL(math_atan)},
+  {LSTRKEY("ceil"),  LFUNCVAL(math_ceil)},
+  {LSTRKEY("cosh"),  LFUNCVAL(math_cosh)},
+  {LSTRKEY("cos"),   LFUNCVAL(math_cos)},
+  {LSTRKEY("deg"),   LFUNCVAL(math_deg)},
+  {LSTRKEY("exp"),   LFUNCVAL(math_exp)},
+  {LSTRKEY("floor"), LFUNCVAL(math_floor)},
+  {LSTRKEY("fmod"),  LFUNCVAL(math_fmod)},
+#if LUA_OPTIMIZE_MEMORY > 0 && defined(LUA_COMPAT_MOD)
+  {LSTRKEY("mod"),   LFUNCVAL(math_fmod)}, 
+#endif
+  {LSTRKEY("frexp"), LFUNCVAL(math_frexp)},
+  {LSTRKEY("ldexp"), LFUNCVAL(math_ldexp)},
+  {LSTRKEY("log10"), LFUNCVAL(math_log10)},
+  {LSTRKEY("log"),   LFUNCVAL(math_log)},
+  {LSTRKEY("max"),   LFUNCVAL(math_max)},
+  {LSTRKEY("min"),   LFUNCVAL(math_min)},
+  {LSTRKEY("modf"),   LFUNCVAL(math_modf)},
+  {LSTRKEY("pow"),   LFUNCVAL(math_pow)},
+  {LSTRKEY("rad"),   LFUNCVAL(math_rad)},
+  {LSTRKEY("random"),     LFUNCVAL(math_random)},
+  {LSTRKEY("randomseed"), LFUNCVAL(math_randomseed)},
+  {LSTRKEY("sinh"),   LFUNCVAL(math_sinh)},
+  {LSTRKEY("sin"),   LFUNCVAL(math_sin)},
+  {LSTRKEY("sqrt"),  LFUNCVAL(math_sqrt)},
+  {LSTRKEY("tanh"),   LFUNCVAL(math_tanh)},
+  {LSTRKEY("tan"),   LFUNCVAL(math_tan)},
+#if LUA_OPTIMIZE_MEMORY > 0
+  {LSTRKEY("pi"),    LNUMVAL(PI)},
+  {LSTRKEY("huge"),  LNUMVAL(HUGE_VAL)},
+#endif // #if LUA_OPTIMIZE_MEMORY > 0
+#endif // #ifdef LUA_NUMBER_INTEGRAL
+  {LNILKEY, LNILVAL}
+};
+
+
+/*
+** Open math library
+*/
+
+#if defined LUA_NUMBER_INTEGRAL
+# include <limits.h>		/* for LONG_MAX */
+#endif
+
+LUALIB_API int luaopen_math (lua_State *L) {
+#if LUA_OPTIMIZE_MEMORY > 0
+  return 0;
+#else
+  luaL_register(L, LUA_MATHLIBNAME, math_map);
+# if defined LUA_NUMBER_INTEGRAL
+  lua_pushnumber(L, LONG_MAX);
+  lua_setfield(L, -2, "huge");
+# else
+  lua_pushnumber(L, PI);
+  lua_setfield(L, -2, "pi");
+  lua_pushnumber(L, HUGE_VAL);
+  lua_setfield(L, -2, "huge");
+#  if defined(LUA_COMPAT_MOD)
+  lua_getfield(L, -1, "fmod");
+  lua_setfield(L, -2, "mod");
+#  endif
+# endif
+  return 1;
+#endif
+}

components/external/lua/lua/lmem.c

@@ -0,0 +1,86 @@
+/*
+** $Id: lmem.c,v 1.70.1.1 2007/12/27 13:02:25 roberto Exp $
+** Interface to Memory Manager
+** See Copyright Notice in lua.h
+*/
+
+
+#include <stddef.h>
+
+#define lmem_c
+#define LUA_CORE
+
+#include "lua.h"
+
+#include "ldebug.h"
+#include "ldo.h"
+#include "lmem.h"
+#include "lobject.h"
+#include "lstate.h"
+
+
+
+/*
+** About the realloc function:
+** void * frealloc (void *ud, void *ptr, size_t osize, size_t nsize);
+** (`osize' is the old size, `nsize' is the new size)
+**
+** Lua ensures that (ptr == NULL) iff (osize == 0).
+**
+** * frealloc(ud, NULL, 0, x) creates a new block of size `x'
+**
+** * frealloc(ud, p, x, 0) frees the block `p'
+** (in this specific case, frealloc must return NULL).
+** particularly, frealloc(ud, NULL, 0, 0) does nothing
+** (which is equivalent to free(NULL) in ANSI C)
+**
+** frealloc returns NULL if it cannot create or reallocate the area
+** (any reallocation to an equal or smaller size cannot fail!)
+*/
+
+
+
+#define MINSIZEARRAY	4
+
+
+void *luaM_growaux_ (lua_State *L, void *block, int *size, size_t size_elems,
+                     int limit, const char *errormsg) {
+  void *newblock;
+  int newsize;
+  if (*size >= limit/2) {  /* cannot double it? */
+    if (*size >= limit)  /* cannot grow even a little? */
+      luaG_runerror(L, errormsg);
+    newsize = limit;  /* still have at least one free place */
+  }
+  else {
+    newsize = (*size)*2;
+    if (newsize < MINSIZEARRAY)
+      newsize = MINSIZEARRAY;  /* minimum size */
+  }
+  newblock = luaM_reallocv(L, block, *size, newsize, size_elems);
+  *size = newsize;  /* update only when everything else is OK */
+  return newblock;
+}
+
+
+void *luaM_toobig (lua_State *L) {
+  luaG_runerror(L, "memory allocation error: block too big");
+  return NULL;  /* to avoid warnings */
+}
+
+
+
+/*
+** generic allocation routine.
+*/
+void *luaM_realloc_ (lua_State *L, void *block, size_t osize, size_t nsize) {
+  global_State *g = G(L);
+  lua_assert((osize == 0) == (block == NULL));
+  block = (*g->frealloc)(g->ud, block, osize, nsize);
+  if (block == NULL && nsize > 0)
+    luaD_throw(L, LUA_ERRMEM);
+  lua_assert((nsize == 0) == (block == NULL));
+  g->totalbytes = (g->totalbytes - osize) + nsize;
+  return block;
+}
+

components/external/lua/lua/lmem.h

@@ -0,0 +1,49 @@
+/*
+** $Id: lmem.h,v 1.31.1.1 2007/12/27 13:02:25 roberto Exp $
+** Interface to Memory Manager
+** See Copyright Notice in lua.h
+*/
+
+#ifndef lmem_h
+#define lmem_h
+
+
+#include <stddef.h>
+
+#include "llimits.h"
+#include "lua.h"
+
+#define MEMERRMSG	"not enough memory"
+
+
+#define luaM_reallocv(L,b,on,n,e) \
+	((cast(size_t, (n)+1) <= MAX_SIZET/(e)) ?  /* +1 to avoid warnings */ \
+		luaM_realloc_(L, (b), (on)*(e), (n)*(e)) : \
+		luaM_toobig(L))
+
+#define luaM_freemem(L, b, s)	luaM_realloc_(L, (b), (s), 0)
+#define luaM_free(L, b)		luaM_realloc_(L, (b), sizeof(*(b)), 0)
+#define luaM_freearray(L, b, n, t)   luaM_reallocv(L, (b), n, 0, sizeof(t))
+
+#define luaM_malloc(L,t)	luaM_realloc_(L, NULL, 0, (t))
+#define luaM_new(L,t)		cast(t *, luaM_malloc(L, sizeof(t)))
+#define luaM_newvector(L,n,t) \
+		cast(t *, luaM_reallocv(L, NULL, 0, n, sizeof(t)))
+
+#define luaM_growvector(L,v,nelems,size,t,limit,e) \
+          if ((nelems)+1 > (size)) \
+            ((v)=cast(t *, luaM_growaux_(L,v,&(size),sizeof(t),limit,e)))
+
+#define luaM_reallocvector(L, v,oldn,n,t) \
+   ((v)=cast(t *, luaM_reallocv(L, v, oldn, n, sizeof(t))))
+
+
+LUAI_FUNC void *luaM_realloc_ (lua_State *L, void *block, size_t oldsize,
+                                                          size_t size);
+LUAI_FUNC void *luaM_toobig (lua_State *L);
+LUAI_FUNC void *luaM_growaux_ (lua_State *L, void *block, int *size,
+                               size_t size_elem, int limit,
+                               const char *errormsg);
+
+#endif
+

components/external/lua/lua/lobject.c

@@ -0,0 +1,216 @@
+/*
+** $Id: lobject.c,v 2.22.1.1 2007/12/27 13:02:25 roberto Exp $
+** Some generic functions over Lua objects
+** See Copyright Notice in lua.h
+*/
+
+#include <ctype.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define lobject_c
+#define LUA_CORE
+
+#include "lua.h"
+
+#include "ldo.h"
+#include "lmem.h"
+#include "lobject.h"
+#include "lstate.h"
+#include "lstring.h"
+#include "lvm.h"
+
+
+
+const TValue luaO_nilobject_ = {LUA_TVALUE_NIL};
+
+
+/*
+** converts an integer to a "floating point byte", represented as
+** (eeeeexxx), where the real value is (1xxx) * 2^(eeeee - 1) if
+** eeeee != 0 and (xxx) otherwise.
+*/
+int luaO_int2fb (unsigned int x) {
+  int e = 0;  /* expoent */
+  while (x >= 16) {
+    x = (x+1) >> 1;
+    e++;
+  }
+  if (x < 8) return x;
+  else return ((e+1) << 3) | (cast_int(x) - 8);
+}
+
+
+/* converts back */
+int luaO_fb2int (int x) {
+  int e = (x >> 3) & 31;
+  if (e == 0) return x;
+  else return ((x & 7)+8) << (e - 1);
+}
+
+
+int luaO_log2 (unsigned int x) {
+  static const lu_byte log_2[256] = {
+    0,1,2,2,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
+    6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
+    7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+    7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+    8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
+    8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
+    8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
+    8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8
+  };
+  int l = -1;
+  while (x >= 256) { l += 8; x >>= 8; }
+  return l + log_2[x];
+
+}
+
+
+int luaO_rawequalObj (const TValue *t1, const TValue *t2) {
+  if (ttype(t1) != ttype(t2)) return 0;
+  else switch (ttype(t1)) {
+    case LUA_TNIL:
+      return 1;
+    case LUA_TNUMBER:
+      return luai_numeq(nvalue(t1), nvalue(t2));
+    case LUA_TBOOLEAN:
+      return bvalue(t1) == bvalue(t2);  /* boolean true must be 1 !! */
+    case LUA_TLIGHTUSERDATA:
+    case LUA_TROTABLE:
+    case LUA_TLIGHTFUNCTION:
+      return pvalue(t1) == pvalue(t2);
+    default:
+      lua_assert(iscollectable(t1));
+      return gcvalue(t1) == gcvalue(t2);
+  }
+}
+
+
+int luaO_str2d (const char *s, lua_Number *result) {
+  char *endptr;
+  *result = lua_str2number(s, &endptr);
+  if (endptr == s) return 0;  /* conversion failed */
+  if (*endptr == 'x' || *endptr == 'X')  /* maybe an hexadecimal constant? */
+    *result = cast_num(strtoul(s, &endptr, 16));
+  if (*endptr == '\0') return 1;  /* most common case */
+  while (isspace(cast(unsigned char, *endptr))) endptr++;
+  if (*endptr != '\0') return 0;  /* invalid trailing characters? */
+  return 1;
+}
+
+
+
+static void pushstr (lua_State *L, const char *str) {
+  setsvalue2s(L, L->top, luaS_new(L, str));
+  incr_top(L);
+}
+
+
+/* this function handles only `%d', `%c', %f, %p, and `%s' formats */
+const char *luaO_pushvfstring (lua_State *L, const char *fmt, va_list argp) {
+  int n = 1;
+  pushstr(L, "");
+  for (;;) {
+    const char *e = strchr(fmt, '%');
+    if (e == NULL) break;
+    setsvalue2s(L, L->top, luaS_newlstr(L, fmt, e-fmt));
+    incr_top(L);
+    switch (*(e+1)) {
+      case 's': {
+        const char *s = va_arg(argp, char *);
+        if (s == NULL) s = "(null)";
+        pushstr(L, s);
+        break;
+      }
+      case 'c': {
+        char buff[2];
+        buff[0] = cast(char, va_arg(argp, int));
+        buff[1] = '\0';
+        pushstr(L, buff);
+        break;
+      }
+      case 'd': {
+        setnvalue(L->top, cast_num(va_arg(argp, int)));
+        incr_top(L);
+        break;
+      }
+      case 'f': {
+        setnvalue(L->top, cast_num(va_arg(argp, l_uacNumber)));
+        incr_top(L);
+        break;
+      }
+      case 'p': {
+        char buff[4*sizeof(void *) + 8]; /* should be enough space for a `%p' */
+        sprintf(buff, "%p", va_arg(argp, void *));
+        pushstr(L, buff);
+        break;
+      }
+      case '%': {
+        pushstr(L, "%");
+        break;
+      }
+      default: {
+        char buff[3];
+        buff[0] = '%';
+        buff[1] = *(e+1);
+        buff[2] = '\0';
+        pushstr(L, buff);
+        break;
+      }
+    }
+    n += 2;
+    fmt = e+2;
+  }
+  pushstr(L, fmt);
+  luaV_concat(L, n+1, cast_int(L->top - L->base) - 1);
+  L->top -= n;
+  return svalue(L->top - 1);
+}
+
+
+const char *luaO_pushfstring (lua_State *L, const char *fmt, ...) {
+  const char *msg;
+  va_list argp;
+  va_start(argp, fmt);
+  msg = luaO_pushvfstring(L, fmt, argp);
+  va_end(argp);
+  return msg;
+}
+
+
+void luaO_chunkid (char *out, const char *source, size_t bufflen) {
+  if (*source == '=') {
+    strncpy(out, source+1, bufflen);  /* remove first char */
+    out[bufflen-1] = '\0';  /* ensures null termination */
+  }
+  else {  /* out = "source", or "...source" */
+    if (*source == '@') {
+      size_t l;
+      source++;  /* skip the `@' */
+      bufflen -= sizeof(" '...' ");
+      l = strlen(source);
+      strcpy(out, "");
+      if (l > bufflen) {
+        source += (l-bufflen);  /* get last part of file name */
+        strcat(out, "...");
+      }
+      strcat(out, source);
+    }
+    else {  /* out = [string "string"] */
+      size_t len = strcspn(source, "\n\r");  /* stop at first newline */
+      bufflen -= sizeof(" [string \"...\"] ");
+      if (len > bufflen) len = bufflen;
+      strcpy(out, "[string \"");
+      if (source[len] != '\0') {  /* must truncate? */
+        strncat(out, source, len);
+        strcat(out, "...");
+      }
+      else
+        strcat(out, source);
+      strcat(out, "\"]");
+    }
+  }
+}

components/external/lua/lua/lopcodes.c

@@ -0,0 +1,102 @@
+/*
+** $Id: lopcodes.c,v 1.37.1.1 2007/12/27 13:02:25 roberto Exp $
+** See Copyright Notice in lua.h
+*/
+
+
+#define lopcodes_c
+#define LUA_CORE
+
+
+#include "lopcodes.h"
+
+
+/* ORDER OP */
+
+const char *const luaP_opnames[NUM_OPCODES+1] = {
+  "MOVE",
+  "LOADK",
+  "LOADBOOL",
+  "LOADNIL",
+  "GETUPVAL",
+  "GETGLOBAL",
+  "GETTABLE",
+  "SETGLOBAL",
+  "SETUPVAL",
+  "SETTABLE",
+  "NEWTABLE",
+  "SELF",
+  "ADD",
+  "SUB",
+  "MUL",
+  "DIV",
+  "MOD",
+  "POW",
+  "UNM",
+  "NOT",
+  "LEN",
+  "CONCAT",
+  "JMP",
+  "EQ",
+  "LT",
+  "LE",
+  "TEST",
+  "TESTSET",
+  "CALL",
+  "TAILCALL",
+  "RETURN",
+  "FORLOOP",
+  "FORPREP",
+  "TFORLOOP",
+  "SETLIST",
+  "CLOSE",
+  "CLOSURE",
+  "VARARG",
+  NULL
+};
+
+
+#define opmode(t,a,b,c,m) (((t)<<7) | ((a)<<6) | ((b)<<4) | ((c)<<2) | (m))
+
+const lu_byte luaP_opmodes[NUM_OPCODES] = {
+/*       T  A    B       C     mode		   opcode	*/
+  opmode(0, 1, OpArgR, OpArgN, iABC) 		/* OP_MOVE */
+ ,opmode(0, 1, OpArgK, OpArgN, iABx)		/* OP_LOADK */
+ ,opmode(0, 1, OpArgU, OpArgU, iABC)		/* OP_LOADBOOL */
+ ,opmode(0, 1, OpArgR, OpArgN, iABC)		/* OP_LOADNIL */
+ ,opmode(0, 1, OpArgU, OpArgN, iABC)		/* OP_GETUPVAL */
+ ,opmode(0, 1, OpArgK, OpArgN, iABx)		/* OP_GETGLOBAL */
+ ,opmode(0, 1, OpArgR, OpArgK, iABC)		/* OP_GETTABLE */
+ ,opmode(0, 0, OpArgK, OpArgN, iABx)		/* OP_SETGLOBAL */
+ ,opmode(0, 0, OpArgU, OpArgN, iABC)		/* OP_SETUPVAL */
+ ,opmode(0, 0, OpArgK, OpArgK, iABC)		/* OP_SETTABLE */
+ ,opmode(0, 1, OpArgU, OpArgU, iABC)		/* OP_NEWTABLE */
+ ,opmode(0, 1, OpArgR, OpArgK, iABC)		/* OP_SELF */
+ ,opmode(0, 1, OpArgK, OpArgK, iABC)		/* OP_ADD */
+ ,opmode(0, 1, OpArgK, OpArgK, iABC)		/* OP_SUB */
+ ,opmode(0, 1, OpArgK, OpArgK, iABC)		/* OP_MUL */
+ ,opmode(0, 1, OpArgK, OpArgK, iABC)		/* OP_DIV */
+ ,opmode(0, 1, OpArgK, OpArgK, iABC)		/* OP_MOD */
+ ,opmode(0, 1, OpArgK, OpArgK, iABC)		/* OP_POW */
+ ,opmode(0, 1, OpArgR, OpArgN, iABC)		/* OP_UNM */
+ ,opmode(0, 1, OpArgR, OpArgN, iABC)		/* OP_NOT */
+ ,opmode(0, 1, OpArgR, OpArgN, iABC)		/* OP_LEN */
+ ,opmode(0, 1, OpArgR, OpArgR, iABC)		/* OP_CONCAT */
+ ,opmode(0, 0, OpArgR, OpArgN, iAsBx)		/* OP_JMP */
+ ,opmode(1, 0, OpArgK, OpArgK, iABC)		/* OP_EQ */
+ ,opmode(1, 0, OpArgK, OpArgK, iABC)		/* OP_LT */
+ ,opmode(1, 0, OpArgK, OpArgK, iABC)		/* OP_LE */
+ ,opmode(1, 1, OpArgR, OpArgU, iABC)		/* OP_TEST */
+ ,opmode(1, 1, OpArgR, OpArgU, iABC)		/* OP_TESTSET */
+ ,opmode(0, 1, OpArgU, OpArgU, iABC)		/* OP_CALL */
+ ,opmode(0, 1, OpArgU, OpArgU, iABC)		/* OP_TAILCALL */
+ ,opmode(0, 0, OpArgU, OpArgN, iABC)		/* OP_RETURN */
+ ,opmode(0, 1, OpArgR, OpArgN, iAsBx)		/* OP_FORLOOP */
+ ,opmode(0, 1, OpArgR, OpArgN, iAsBx)		/* OP_FORPREP */
+ ,opmode(1, 0, OpArgN, OpArgU, iABC)		/* OP_TFORLOOP */
+ ,opmode(0, 0, OpArgU, OpArgU, iABC)		/* OP_SETLIST */
+ ,opmode(0, 0, OpArgN, OpArgN, iABC)		/* OP_CLOSE */
+ ,opmode(0, 1, OpArgU, OpArgN, iABx)		/* OP_CLOSURE */
+ ,opmode(0, 1, OpArgU, OpArgN, iABC)		/* OP_VARARG */
+};
+

components/external/lua/lua/lopcodes.h

@@ -0,0 +1,268 @@
+/*
+** $Id: lopcodes.h,v 1.125.1.1 2007/12/27 13:02:25 roberto Exp $
+** Opcodes for Lua virtual machine
+** See Copyright Notice in lua.h
+*/
+
+#ifndef lopcodes_h
+#define lopcodes_h
+
+#include "llimits.h"
+
+
+/*===========================================================================
+  We assume that instructions are unsigned numbers.
+  All instructions have an opcode in the first 6 bits.
+  Instructions can have the following fields:
+	`A' : 8 bits
+	`B' : 9 bits
+	`C' : 9 bits
+	`Bx' : 18 bits (`B' and `C' together)
+	`sBx' : signed Bx
+
+  A signed argument is represented in excess K; that is, the number
+  value is the unsigned value minus K. K is exactly the maximum value
+  for that argument (so that -max is represented by 0, and +max is
+  represented by 2*max), which is half the maximum for the corresponding
+  unsigned argument.
+===========================================================================*/
+
+
+enum OpMode {iABC, iABx, iAsBx};  /* basic instruction format */
+
+
+/*
+** size and position of opcode arguments.
+*/
+#define SIZE_C		9
+#define SIZE_B		9
+#define SIZE_Bx		(SIZE_C + SIZE_B)
+#define SIZE_A		8
+
+#define SIZE_OP		6
+
+#define POS_OP		0
+#define POS_A		(POS_OP + SIZE_OP)
+#define POS_C		(POS_A + SIZE_A)
+#define POS_B		(POS_C + SIZE_C)
+#define POS_Bx		POS_C
+
+
+/*
+** limits for opcode arguments.
+** we use (signed) int to manipulate most arguments,
+** so they must fit in LUAI_BITSINT-1 bits (-1 for sign)
+*/
+#if SIZE_Bx < LUAI_BITSINT-1
+#define MAXARG_Bx        ((1<<SIZE_Bx)-1)
+#define MAXARG_sBx        (MAXARG_Bx>>1)         /* `sBx' is signed */
+#else
+#define MAXARG_Bx        MAX_INT
+#define MAXARG_sBx        MAX_INT
+#endif
+
+
+#define MAXARG_A        ((1<<SIZE_A)-1)
+#define MAXARG_B        ((1<<SIZE_B)-1)
+#define MAXARG_C        ((1<<SIZE_C)-1)
+
+
+/* creates a mask with `n' 1 bits at position `p' */
+#define MASK1(n,p)	((~((~(Instruction)0)<<n))<<p)
+
+/* creates a mask with `n' 0 bits at position `p' */
+#define MASK0(n,p)	(~MASK1(n,p))
+
+/*
+** the following macros help to manipulate instructions
+*/
+
+#define GET_OPCODE(i)	(cast(OpCode, ((i)>>POS_OP) & MASK1(SIZE_OP,0)))
+#define SET_OPCODE(i,o)	((i) = (((i)&MASK0(SIZE_OP,POS_OP)) | \
+		((cast(Instruction, o)<<POS_OP)&MASK1(SIZE_OP,POS_OP))))
+
+#define GETARG_A(i)	(cast(int, ((i)>>POS_A) & MASK1(SIZE_A,0)))
+#define SETARG_A(i,u)	((i) = (((i)&MASK0(SIZE_A,POS_A)) | \
+		((cast(Instruction, u)<<POS_A)&MASK1(SIZE_A,POS_A))))
+
+#define GETARG_B(i)	(cast(int, ((i)>>POS_B) & MASK1(SIZE_B,0)))
+#define SETARG_B(i,b)	((i) = (((i)&MASK0(SIZE_B,POS_B)) | \
+		((cast(Instruction, b)<<POS_B)&MASK1(SIZE_B,POS_B))))
+
+#define GETARG_C(i)	(cast(int, ((i)>>POS_C) & MASK1(SIZE_C,0)))
+#define SETARG_C(i,b)	((i) = (((i)&MASK0(SIZE_C,POS_C)) | \
+		((cast(Instruction, b)<<POS_C)&MASK1(SIZE_C,POS_C))))
+
+#define GETARG_Bx(i)	(cast(int, ((i)>>POS_Bx) & MASK1(SIZE_Bx,0)))
+#define SETARG_Bx(i,b)	((i) = (((i)&MASK0(SIZE_Bx,POS_Bx)) | \
+		((cast(Instruction, b)<<POS_Bx)&MASK1(SIZE_Bx,POS_Bx))))
+
+#define GETARG_sBx(i)	(GETARG_Bx(i)-MAXARG_sBx)
+#define SETARG_sBx(i,b)	SETARG_Bx((i),cast(unsigned int, (b)+MAXARG_sBx))
+
+
+#define CREATE_ABC(o,a,b,c)	((cast(Instruction, o)<<POS_OP) \
+			| (cast(Instruction, a)<<POS_A) \
+			| (cast(Instruction, b)<<POS_B) \
+			| (cast(Instruction, c)<<POS_C))
+
+#define CREATE_ABx(o,a,bc)	((cast(Instruction, o)<<POS_OP) \
+			| (cast(Instruction, a)<<POS_A) \
+			| (cast(Instruction, bc)<<POS_Bx))
+
+
+/*
+** Macros to operate RK indices
+*/
+
+/* this bit 1 means constant (0 means register) */
+#define BITRK		(1 << (SIZE_B - 1))
+
+/* test whether value is a constant */
+#define ISK(x)		((x) & BITRK)
+
+/* gets the index of the constant */
+#define INDEXK(r)	((int)(r) & ~BITRK)
+
+#define MAXINDEXRK	(BITRK - 1)
+
+/* code a constant index as a RK value */
+#define RKASK(x)	((x) | BITRK)
+
+
+/*
+** invalid register that fits in 8 bits
+*/
+#define NO_REG		MAXARG_A
+
+
+/*
+** R(x) - register
+** Kst(x) - constant (in constant table)
+** RK(x) == if ISK(x) then Kst(INDEXK(x)) else R(x)
+*/
+
+
+/*
+** grep "ORDER OP" if you change these enums
+*/
+
+typedef enum {
+/*----------------------------------------------------------------------
+name		args	description
+------------------------------------------------------------------------*/
+OP_MOVE,/*	A B	R(A) := R(B)					*/
+OP_LOADK,/*	A Bx	R(A) := Kst(Bx)					*/
+OP_LOADBOOL,/*	A B C	R(A) := (Bool)B; if (C) pc++			*/
+OP_LOADNIL,/*	A B	R(A) := ... := R(B) := nil			*/
+OP_GETUPVAL,/*	A B	R(A) := UpValue[B]				*/
+
+OP_GETGLOBAL,/*	A Bx	R(A) := Gbl[Kst(Bx)]				*/
+OP_GETTABLE,/*	A B C	R(A) := R(B)[RK(C)]				*/
+
+OP_SETGLOBAL,/*	A Bx	Gbl[Kst(Bx)] := R(A)				*/
+OP_SETUPVAL,/*	A B	UpValue[B] := R(A)				*/
+OP_SETTABLE,/*	A B C	R(A)[RK(B)] := RK(C)				*/
+
+OP_NEWTABLE,/*	A B C	R(A) := {} (size = B,C)				*/
+
+OP_SELF,/*	A B C	R(A+1) := R(B); R(A) := R(B)[RK(C)]		*/
+
+OP_ADD,/*	A B C	R(A) := RK(B) + RK(C)				*/
+OP_SUB,/*	A B C	R(A) := RK(B) - RK(C)				*/
+OP_MUL,/*	A B C	R(A) := RK(B) * RK(C)				*/
+OP_DIV,/*	A B C	R(A) := RK(B) / RK(C)				*/
+OP_MOD,/*	A B C	R(A) := RK(B) % RK(C)				*/
+OP_POW,/*	A B C	R(A) := RK(B) ^ RK(C)				*/
+OP_UNM,/*	A B	R(A) := -R(B)					*/
+OP_NOT,/*	A B	R(A) := not R(B)				*/
+OP_LEN,/*	A B	R(A) := length of R(B)				*/
+
+OP_CONCAT,/*	A B C	R(A) := R(B).. ... ..R(C)			*/
+
+OP_JMP,/*	sBx	pc+=sBx					*/
+
+OP_EQ,/*	A B C	if ((RK(B) == RK(C)) ~= A) then pc++		*/
+OP_LT,/*	A B C	if ((RK(B) <  RK(C)) ~= A) then pc++  		*/
+OP_LE,/*	A B C	if ((RK(B) <= RK(C)) ~= A) then pc++  		*/
+
+OP_TEST,/*	A C	if not (R(A) <=> C) then pc++			*/ 
+OP_TESTSET,/*	A B C	if (R(B) <=> C) then R(A) := R(B) else pc++	*/ 
+
+OP_CALL,/*	A B C	R(A), ... ,R(A+C-2) := R(A)(R(A+1), ... ,R(A+B-1)) */
+OP_TAILCALL,/*	A B C	return R(A)(R(A+1), ... ,R(A+B-1))		*/
+OP_RETURN,/*	A B	return R(A), ... ,R(A+B-2)	(see note)	*/
+
+OP_FORLOOP,/*	A sBx	R(A)+=R(A+2);
+			if R(A) <?= R(A+1) then { pc+=sBx; R(A+3)=R(A) }*/
+OP_FORPREP,/*	A sBx	R(A)-=R(A+2); pc+=sBx				*/
+
+OP_TFORLOOP,/*	A C	R(A+3), ... ,R(A+2+C) := R(A)(R(A+1), R(A+2)); 
+                        if R(A+3) ~= nil then R(A+2)=R(A+3) else pc++	*/ 
+OP_SETLIST,/*	A B C	R(A)[(C-1)*FPF+i] := R(A+i), 1 <= i <= B	*/
+
+OP_CLOSE,/*	A 	close all variables in the stack up to (>=) R(A)*/
+OP_CLOSURE,/*	A Bx	R(A) := closure(KPROTO[Bx], R(A), ... ,R(A+n))	*/
+
+OP_VARARG/*	A B	R(A), R(A+1), ..., R(A+B-1) = vararg		*/
+} OpCode;
+
+
+#define NUM_OPCODES	(cast(int, OP_VARARG) + 1)
+
+
+
+/*===========================================================================
+  Notes:
+  (*) In OP_CALL, if (B == 0) then B = top. C is the number of returns - 1,
+      and can be 0: OP_CALL then sets `top' to last_result+1, so
+      next open instruction (OP_CALL, OP_RETURN, OP_SETLIST) may use `top'.
+
+  (*) In OP_VARARG, if (B == 0) then use actual number of varargs and
+      set top (like in OP_CALL with C == 0).
+
+  (*) In OP_RETURN, if (B == 0) then return up to `top'
+
+  (*) In OP_SETLIST, if (B == 0) then B = `top';
+      if (C == 0) then next `instruction' is real C
+
+  (*) For comparisons, A specifies what condition the test should accept
+      (true or false).
+
+  (*) All `skips' (pc++) assume that next instruction is a jump
+===========================================================================*/
+
+
+/*
+** masks for instruction properties. The format is:
+** bits 0-1: op mode
+** bits 2-3: C arg mode
+** bits 4-5: B arg mode
+** bit 6: instruction set register A
+** bit 7: operator is a test
+*/  
+
+enum OpArgMask {
+  OpArgN,  /* argument is not used */
+  OpArgU,  /* argument is used */
+  OpArgR,  /* argument is a register or a jump offset */
+  OpArgK   /* argument is a constant or register/constant */
+};
+
+LUAI_DATA const lu_byte luaP_opmodes[NUM_OPCODES];
+
+#define getOpMode(m)	(cast(enum OpMode, luaP_opmodes[m] & 3))
+#define getBMode(m)	(cast(enum OpArgMask, (luaP_opmodes[m] >> 4) & 3))
+#define getCMode(m)	(cast(enum OpArgMask, (luaP_opmodes[m] >> 2) & 3))
+#define testAMode(m)	(luaP_opmodes[m] & (1 << 6))
+#define testTMode(m)	(luaP_opmodes[m] & (1 << 7))
+
+
+LUAI_DATA const char *const luaP_opnames[NUM_OPCODES+1];  /* opcode names */
+
+
+/* number of list items to accumulate before a SETLIST instruction */
+#define LFIELDS_PER_FLUSH	50
+
+
+#endif

components/external/lua/lua/loslib.c

@@ -0,0 +1,247 @@
+/*
+** $Id: loslib.c,v 1.19.1.3 2008/01/18 16:38:18 roberto Exp $
+** Standard Operating System library
+** See Copyright Notice in lua.h
+*/
+
+
+#include <errno.h>
+#include <locale.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+#define loslib_c
+#define LUA_LIB
+
+#include "lua.h"
+
+#include "lauxlib.h"
+#include "lualib.h"
+#include "lrotable.h"
+
+
+static int os_pushresult (lua_State *L, int i, const char *filename) {
+  int en = errno;  /* calls to Lua API may change this value */
+  if (i) {
+    lua_pushboolean(L, 1);
+    return 1;
+  }
+  else {
+    lua_pushnil(L);
+    lua_pushfstring(L, "%s: %s", filename, strerror(en));
+    lua_pushinteger(L, en);
+    return 3;
+  }
+}
+
+
+static int os_execute (lua_State *L) {
+  lua_pushinteger(L, system(luaL_optstring(L, 1, NULL)));
+  return 1;
+}
+
+
+static int os_remove (lua_State *L) {
+  const char *filename = luaL_checkstring(L, 1);
+  return os_pushresult(L, remove(filename) == 0, filename);
+}
+
+
+static int os_rename (lua_State *L) {
+  const char *fromname = luaL_checkstring(L, 1);
+  const char *toname = luaL_checkstring(L, 2);
+  return os_pushresult(L, rename(fromname, toname) == 0, fromname);
+}
+
+
+static int os_tmpname (lua_State *L) {
+  char buff[LUA_TMPNAMBUFSIZE];
+  int err;
+  lua_tmpnam(buff, err);
+  if (err)
+    return luaL_error(L, "unable to generate a unique filename");
+  lua_pushstring(L, buff);
+  return 1;
+}
+
+
+static int os_getenv (lua_State *L) {
+  lua_pushstring(L, getenv(luaL_checkstring(L, 1)));  /* if NULL push nil */
+  return 1;
+}
+
+
+static int os_clock (lua_State *L) {
+  lua_pushnumber(L, ((lua_Number)clock())/(lua_Number)CLOCKS_PER_SEC);
+  return 1;
+}
+
+
+/*
+** {======================================================
+** Time/Date operations
+** { year=%Y, month=%m, day=%d, hour=%H, min=%M, sec=%S,
+**   wday=%w+1, yday=%j, isdst=? }
+** =======================================================
+*/
+
+static void setfield (lua_State *L, const char *key, int value) {
+  lua_pushinteger(L, value);
+  lua_setfield(L, -2, key);
+}
+
+static void setboolfield (lua_State *L, const char *key, int value) {
+  if (value < 0)  /* undefined? */
+    return;  /* does not set field */
+  lua_pushboolean(L, value);
+  lua_setfield(L, -2, key);
+}
+
+static int getboolfield (lua_State *L, const char *key) {
+  int res;
+  lua_getfield(L, -1, key);
+  res = lua_isnil(L, -1) ? -1 : lua_toboolean(L, -1);
+  lua_pop(L, 1);
+  return res;
+}
+
+
+static int getfield (lua_State *L, const char *key, int d) {
+  int res;
+  lua_getfield(L, -1, key);
+  if (lua_isnumber(L, -1))
+    res = (int)lua_tointeger(L, -1);
+  else {
+    if (d < 0)
+      return luaL_error(L, "field " LUA_QS " missing in date table", key);
+    res = d;
+  }
+  lua_pop(L, 1);
+  return res;
+}
+
+
+static int os_date (lua_State *L) {
+  const char *s = luaL_optstring(L, 1, "%c");
+  time_t t = luaL_opt(L, (time_t)luaL_checknumber, 2, time(NULL));
+  struct tm *stm;
+  if (*s == '!') {  /* UTC? */
+    stm = gmtime(&t);
+    s++;  /* skip `!' */
+  }
+  else
+    stm = localtime(&t);
+  if (stm == NULL)  /* invalid date? */
+    lua_pushnil(L);
+  else if (strcmp(s, "*t") == 0) {
+    lua_createtable(L, 0, 9);  /* 9 = number of fields */
+    setfield(L, "sec", stm->tm_sec);
+    setfield(L, "min", stm->tm_min);
+    setfield(L, "hour", stm->tm_hour);
+    setfield(L, "day", stm->tm_mday);
+    setfield(L, "month", stm->tm_mon+1);
+    setfield(L, "year", stm->tm_year+1900);
+    setfield(L, "wday", stm->tm_wday+1);
+    setfield(L, "yday", stm->tm_yday+1);
+    setboolfield(L, "isdst", stm->tm_isdst);
+  }
+  else {
+    char cc[3];
+    luaL_Buffer b;
+    cc[0] = '%'; cc[2] = '\0';
+    luaL_buffinit(L, &b);
+    for (; *s; s++) {
+      if (*s != '%' || *(s + 1) == '\0')  /* no conversion specifier? */
+        luaL_addchar(&b, *s);
+      else {
+        size_t reslen;
+        char buff[200];  /* should be big enough for any conversion result */
+        cc[1] = *(++s);
+        reslen = strftime(buff, sizeof(buff), cc, stm);
+        luaL_addlstring(&b, buff, reslen);
+      }
+    }
+    luaL_pushresult(&b);
+  }
+  return 1;
+}
+
+
+static int os_time (lua_State *L) {
+  time_t t;
+  if (lua_isnoneornil(L, 1))  /* called without args? */
+    t = time(NULL);  /* get current time */
+  else {
+    struct tm ts;
+    luaL_checktype(L, 1, LUA_TTABLE);
+    lua_settop(L, 1);  /* make sure table is at the top */
+    ts.tm_sec = getfield(L, "sec", 0);
+    ts.tm_min = getfield(L, "min", 0);
+    ts.tm_hour = getfield(L, "hour", 12);
+    ts.tm_mday = getfield(L, "day", -1);
+    ts.tm_mon = getfield(L, "month", -1) - 1;
+    ts.tm_year = getfield(L, "year", -1) - 1900;
+    ts.tm_isdst = getboolfield(L, "isdst");
+    t = mktime(&ts);
+  }
+  if (t == (time_t)(-1))
+    lua_pushnil(L);
+  else
+    lua_pushnumber(L, (lua_Number)t);
+  return 1;
+}
+
+#if !defined LUA_NUMBER_INTEGRAL
+static int os_difftime (lua_State *L) {
+  lua_pushnumber(L, difftime((time_t)(luaL_checknumber(L, 1)),
+                             (time_t)(luaL_optnumber(L, 2, 0))));
+  return 1;
+}
+#endif
+
+/* }====================================================== */
+
+
+static int os_setlocale (lua_State *L) {
+  static const int cat[] = {LC_ALL, LC_COLLATE, LC_CTYPE, LC_MONETARY,
+                      LC_NUMERIC, LC_TIME};
+  static const char *const catnames[] = {"all", "collate", "ctype", "monetary",
+     "numeric", "time", NULL};
+  const char *l = luaL_optstring(L, 1, NULL);
+  int op = luaL_checkoption(L, 2, "all", catnames);
+  lua_pushstring(L, setlocale(cat[op], l));
+  return 1;
+}
+
+
+static int os_exit (lua_State *L) {
+  exit(luaL_optint(L, 1, EXIT_SUCCESS));
+}
+
+#define MIN_OPT_LEVEL 1
+#include "lrodefs.h"
+const LUA_REG_TYPE syslib[] = {
+  {LSTRKEY("clock"),     LFUNCVAL(os_clock)},
+  {LSTRKEY("date"),      LFUNCVAL(os_date)},
+#if !defined LUA_NUMBER_INTEGRAL
+  {LSTRKEY("difftime"),  LFUNCVAL(os_difftime)},
+#endif
+  {LSTRKEY("execute"),   LFUNCVAL(os_execute)},
+  {LSTRKEY("exit"),      LFUNCVAL(os_exit)},
+  {LSTRKEY("getenv"),    LFUNCVAL(os_getenv)},
+  {LSTRKEY("remove"),    LFUNCVAL(os_remove)},
+  {LSTRKEY("rename"),    LFUNCVAL(os_rename)},
+  {LSTRKEY("setlocale"), LFUNCVAL(os_setlocale)},
+  {LSTRKEY("time"),      LFUNCVAL(os_time)},
+  {LSTRKEY("tmpname"),   LFUNCVAL(os_tmpname)},
+  {LNILKEY, LNILVAL}
+};
+
+/* }====================================================== */
+
+
+
+LUALIB_API int luaopen_os (lua_State *L) {
+  LREGISTER(L, LUA_OSLIBNAME, syslib);
+}

components/external/lua/lua/lparser.h

@@ -0,0 +1,82 @@
+/*
+** $Id: lparser.h,v 1.57.1.1 2007/12/27 13:02:25 roberto Exp $
+** Lua Parser
+** See Copyright Notice in lua.h
+*/
+
+#ifndef lparser_h
+#define lparser_h
+
+#include "llimits.h"
+#include "lobject.h"
+#include "lzio.h"
+
+
+/*
+** Expression descriptor
+*/
+
+typedef enum {
+  VVOID,	/* no value */
+  VNIL,
+  VTRUE,
+  VFALSE,
+  VK,		/* info = index of constant in `k' */
+  VKNUM,	/* nval = numerical value */
+  VLOCAL,	/* info = local register */
+  VUPVAL,       /* info = index of upvalue in `upvalues' */
+  VGLOBAL,	/* info = index of table; aux = index of global name in `k' */
+  VINDEXED,	/* info = table register; aux = index register (or `k') */
+  VJMP,		/* info = instruction pc */
+  VRELOCABLE,	/* info = instruction pc */
+  VNONRELOC,	/* info = result register */
+  VCALL,	/* info = instruction pc */
+  VVARARG	/* info = instruction pc */
+} expkind;
+
+typedef struct expdesc {
+  expkind k;
+  union {
+    struct { int info, aux; } s;
+    lua_Number nval;
+  } u;
+  int t;  /* patch list of `exit when true' */
+  int f;  /* patch list of `exit when false' */
+} expdesc;
+
+
+typedef struct upvaldesc {
+  lu_byte k;
+  lu_byte info;
+} upvaldesc;
+
+
+struct BlockCnt;  /* defined in lparser.c */
+
+
+/* state needed to generate code for a given function */
+typedef struct FuncState {
+  Proto *f;  /* current function header */
+  Table *h;  /* table to find (and reuse) elements in `k' */
+  struct FuncState *prev;  /* enclosing function */
+  struct LexState *ls;  /* lexical state */
+  struct lua_State *L;  /* copy of the Lua state */
+  struct BlockCnt *bl;  /* chain of current blocks */
+  int pc;  /* next position to code (equivalent to `ncode') */
+  int lasttarget;   /* `pc' of last `jump target' */
+  int jpc;  /* list of pending jumps to `pc' */
+  int freereg;  /* first free register */
+  int nk;  /* number of elements in `k' */
+  int np;  /* number of elements in `p' */
+  short nlocvars;  /* number of elements in `locvars' */
+  lu_byte nactvar;  /* number of active local variables */
+  upvaldesc upvalues[LUAI_MAXUPVALUES];  /* upvalues */
+  unsigned short actvar[LUAI_MAXVARS];  /* declared-variable stack */
+} FuncState;
+
+
+LUAI_FUNC Proto *luaY_parser (lua_State *L, ZIO *z, Mbuffer *buff,
+                                            const char *name);
+
+
+#endif

components/external/lua/lua/lrodefs.h

@@ -0,0 +1,41 @@
+/* Read-only tables helper */
+
+#ifndef lrodefs_h
+#define lrodefs_h
+
+#include "lrotable.h"
+
+#undef LUA_REG_TYPE
+#undef LSTRKEY
+#undef LNILKEY
+#undef LNUMKEY
+#undef LFUNCVAL
+#undef LNUMVAL
+#undef LROVAL
+#undef LNILVAL
+#undef LREGISTER
+
+#if (MIN_OPT_LEVEL > 0) && (LUA_OPTIMIZE_MEMORY >= MIN_OPT_LEVEL)
+#define LUA_REG_TYPE                luaR_entry 
+#define LSTRKEY                     LRO_STRKEY
+#define LNUMKEY                     LRO_NUMKEY
+#define LNILKEY                     LRO_NILKEY
+#define LFUNCVAL                    LRO_FUNCVAL
+#define LNUMVAL                     LRO_NUMVAL
+#define LROVAL                      LRO_ROVAL
+#define LNILVAL                     LRO_NILVAL
+#define LREGISTER(L, name, table)\
+  return 0
+#else
+#define LUA_REG_TYPE                luaL_reg
+#define LSTRKEY(x)                  x
+#define LNILKEY                     NULL
+#define LFUNCVAL(x)                 x
+#define LNILVAL                     NULL
+#define LREGISTER(L, name, table)\
+  luaL_register(L, name, table);\
+  return 1
+#endif
+
+#endif /* lrodefs_h */
+

components/external/lua/lua/lrotable.c

@@ -0,0 +1,134 @@
+/* Read-only tables for Lua */
+
+#include <string.h>
+#include "lrotable.h"
+#include "lua.h"
+#include "lauxlib.h"
+#include "lstring.h"
+#include "lobject.h"
+#include "lapi.h"
+
+/* Local defines */
+#define LUAR_FINDFUNCTION     0
+#define LUAR_FINDVALUE        1
+
+/* Externally defined read-only table array */
+extern const luaR_table lua_rotable[];
+
+/* Find a global "read only table" in the constant lua_rotable array */
+void* luaR_findglobal(const char *name, unsigned len) {
+  unsigned i;    
+  
+  if (strlen(name) > LUA_MAX_ROTABLE_NAME)
+    return NULL;
+  for (i=0; lua_rotable[i].name; i ++)
+    if (*lua_rotable[i].name != '\0' && strlen(lua_rotable[i].name) == len && !strncmp(lua_rotable[i].name, name, len)) {
+      return (void*)(lua_rotable[i].pentries);
+    }
+  return NULL;
+}
+
+/* Find an entry in a rotable and return it */
+static const TValue* luaR_auxfind(const luaR_entry *pentry, const char *strkey, luaR_numkey numkey, unsigned *ppos) {
+  const TValue *res = NULL;
+  unsigned i = 0;
+  
+  if (pentry == NULL)
+    return NULL;  
+  while(pentry->key.type != LUA_TNIL) {
+    if ((strkey && (pentry->key.type == LUA_TSTRING) && (!strcmp(pentry->key.id.strkey, strkey))) || 
+        (!strkey && (pentry->key.type == LUA_TNUMBER) && ((luaR_numkey)pentry->key.id.numkey == numkey))) {
+      res = &pentry->value;
+      break;
+    }
+    i ++; pentry ++;
+  }
+  if (res && ppos)
+    *ppos = i;   
+  return res;
+}
+
+int luaR_findfunction(lua_State *L, const luaR_entry *ptable) {
+  const TValue *res = NULL;
+  const char *key = luaL_checkstring(L, 2);
+    
+  res = luaR_auxfind(ptable, key, 0, NULL);  
+  if (res && ttislightfunction(res)) {
+    luaA_pushobject(L, res);
+    return 1;
+  }
+  else
+    return 0;
+}
+
+/* Find an entry in a rotable and return its type 
+   If "strkey" is not NULL, the function will look for a string key,
+   otherwise it will look for a number key */
+const TValue* luaR_findentry(void *data, const char *strkey, luaR_numkey numkey, unsigned *ppos) {
+  return luaR_auxfind((const luaR_entry*)data, strkey, numkey, ppos);
+}
+
+/* Find the metatable of a given table */
+void* luaR_getmeta(void *data) {
+#ifdef LUA_META_ROTABLES
+  const TValue *res = luaR_auxfind((const luaR_entry*)data, "__metatable", 0, NULL);
+  return res && ttisrotable(res) ? rvalue(res) : NULL;
+#else
+  return NULL;
+#endif
+}
+
+static void luaR_next_helper(lua_State *L, const luaR_entry *pentries, int pos, TValue *key, TValue *val) {
+  setnilvalue(key);
+  setnilvalue(val);
+  if (pentries[pos].key.type != LUA_TNIL) {
+    /* Found an entry */
+    if (pentries[pos].key.type == LUA_TSTRING)
+      setsvalue(L, key, luaS_newro(L, pentries[pos].key.id.strkey))
+    else
+      setnvalue(key, (lua_Number)pentries[pos].key.id.numkey)
+   setobj2s(L, val, &pentries[pos].value);
+  }
+}
+/* next (used for iteration) */
+void luaR_next(lua_State *L, void *data, TValue *key, TValue *val) {
+  const luaR_entry* pentries = (const luaR_entry*)data;
+  char strkey[LUA_MAX_ROTABLE_NAME + 1], *pstrkey = NULL;
+  luaR_numkey numkey = 0;
+  unsigned keypos;
+  
+  /* Special case: if key is nil, return the first element of the rotable */
+  if (ttisnil(key)) 
+    luaR_next_helper(L, pentries, 0, key, val);
+  else if (ttisstring(key) || ttisnumber(key)) {
+    /* Find the previoud key again */  
+    if (ttisstring(key)) {
+      luaR_getcstr(strkey, rawtsvalue(key), LUA_MAX_ROTABLE_NAME);          
+      pstrkey = strkey;
+    } else   
+      numkey = (luaR_numkey)nvalue(key);
+    luaR_findentry(data, pstrkey, numkey, &keypos);
+    /* Advance to next key */
+    keypos ++;    
+    luaR_next_helper(L, pentries, keypos, key, val);
+  }
+}
+
+/* Convert a Lua string to a C string */
+void luaR_getcstr(char *dest, const TString *src, size_t maxsize) {
+  if (src->tsv.len+1 > maxsize)
+    dest[0] = '\0';
+  else {
+    memcpy(dest, getstr(src), src->tsv.len);
+    dest[src->tsv.len] = '\0';
+  } 
+}
+
+/* Return 1 if the given pointer is a rotable */
+#ifdef LUA_META_ROTABLES
+extern char _stext;
+extern char _etext;
+int luaR_isrotable(void *p) {
+  return &_stext <= ( char* )p && ( char* )p <= &_etext;
+}
+#endif

components/external/lua/lua/lrotable.h

@@ -0,0 +1,77 @@
+/* Read-only tables for Lua */
+
+#ifndef lrotable_h
+#define lrotable_h
+
+#include "lua.h"
+#include "llimits.h"
+#include "lobject.h"
+#include "luaconf.h"
+
+/* Macros one can use to define rotable entries */
+#ifndef LUA_PACK_VALUE
+#define LRO_FUNCVAL(v)  {{.p = v}, LUA_TLIGHTFUNCTION}
+#define LRO_NUMVAL(v)   {{.n = v}, LUA_TNUMBER}
+#define LRO_ROVAL(v)    {{.p = (void*)v}, LUA_TROTABLE}
+#define LRO_NILVAL      {{.p = NULL}, LUA_TNIL}
+#else // #ifndef LUA_PACK_VALUE
+#define LRO_NUMVAL(v)   {.value.n = v}
+#ifdef ELUA_ENDIAN_LITTLE
+#define LRO_FUNCVAL(v)  {{(int)v, add_sig(LUA_TLIGHTFUNCTION)}}
+#define LRO_ROVAL(v)    {{(int)v, add_sig(LUA_TROTABLE)}}
+#define LRO_NILVAL      {{0, add_sig(LUA_TNIL)}}
+#else // #ifdef ELUA_ENDIAN_LITTLE
+#define LRO_FUNCVAL(v)  {{add_sig(LUA_TLIGHTFUNCTION), (int)v}}
+#define LRO_ROVAL(v)    {{add_sig(LUA_TROTABLE), (int)v}}
+#define LRO_NILVAL      {{add_sig(LUA_TNIL), 0}}
+#endif // #ifdef ELUA_ENDIAN_LITTLE
+#endif // #ifndef LUA_PACK_VALUE
+
+#define LRO_STRKEY(k)   {LUA_TSTRING, {.strkey = k}}
+#define LRO_NUMKEY(k)   {LUA_TNUMBER, {.numkey = k}}
+#define LRO_NILKEY      {LUA_TNIL, {.strkey=NULL}}
+
+/* Maximum length of a rotable name and of a string key*/
+#define LUA_MAX_ROTABLE_NAME      32
+
+/* Type of a numeric key in a rotable */
+typedef int luaR_numkey;
+
+/* The next structure defines the type of a key */
+typedef struct
+{
+  int type;
+  union
+  {
+    const char*   strkey;
+    luaR_numkey   numkey;
+  } id;
+} luaR_key;
+
+/* An entry in the read only table */
+typedef struct
+{
+  const luaR_key key;
+  const TValue value;
+} luaR_entry;
+
+/* A rotable */
+typedef struct
+{
+  const char *name;
+  const luaR_entry *pentries;
+} luaR_table;
+
+void* luaR_findglobal(const char *key, unsigned len);
+int luaR_findfunction(lua_State *L, const luaR_entry *ptable);
+const TValue* luaR_findentry(void *data, const char *strkey, luaR_numkey numkey, unsigned *ppos);
+void luaR_getcstr(char *dest, const TString *src, size_t maxsize);
+void luaR_next(lua_State *L, void *data, TValue *key, TValue *val);
+void* luaR_getmeta(void *data);
+#ifdef LUA_META_ROTABLES
+int luaR_isrotable(void *p);
+#else
+#define luaR_isrotable(p)     (0)
+#endif
+
+#endif

components/external/lua/lua/lstate.c

@@ -0,0 +1,246 @@
+/*
+** $Id: lstate.c,v 2.36.1.2 2008/01/03 15:20:39 roberto Exp $
+** Global State
+** See Copyright Notice in lua.h
+*/
+
+
+#include <stddef.h>
+
+#define lstate_c
+#define LUA_CORE
+
+#include "lua.h"
+
+#include "ldebug.h"
+#include "ldo.h"
+#include "lfunc.h"
+#include "lgc.h"
+#include "llex.h"
+#include "lmem.h"
+#include "lstate.h"
+#include "lstring.h"
+#include "ltable.h"
+#include "ltm.h"
+
+#define state_size(x)	(sizeof(x) + LUAI_EXTRASPACE)
+#define fromstate(l)	(cast(lu_byte *, (l)) - LUAI_EXTRASPACE)
+#define tostate(l)   (cast(lua_State *, cast(lu_byte *, l) + LUAI_EXTRASPACE))
+
+
+/*
+** Main thread combines a thread state and the global state
+*/
+typedef struct LG {
+  lua_State l;
+  global_State g;
+} LG;
+  
+
+
+static void stack_init (lua_State *L1, lua_State *L) {
+  /* initialize CallInfo array */
+  L1->base_ci = luaM_newvector(L, BASIC_CI_SIZE, CallInfo);
+  L1->ci = L1->base_ci;
+  L1->size_ci = BASIC_CI_SIZE;
+  L1->end_ci = L1->base_ci + L1->size_ci - 1;
+  /* initialize stack array */
+  L1->stack = luaM_newvector(L, BASIC_STACK_SIZE + EXTRA_STACK, TValue);
+  L1->stacksize = BASIC_STACK_SIZE + EXTRA_STACK;
+  L1->top = L1->stack;
+  L1->stack_last = L1->stack+(L1->stacksize - EXTRA_STACK)-1;
+  /* initialize first ci */
+  L1->ci->func = L1->top;
+  setnilvalue(L1->top++);  /* `function' entry for this `ci' */
+  L1->base = L1->ci->base = L1->top;
+  L1->ci->top = L1->top + LUA_MINSTACK;
+}
+
+
+static void freestack (lua_State *L, lua_State *L1) {
+  luaM_freearray(L, L1->base_ci, L1->size_ci, CallInfo);
+  luaM_freearray(L, L1->stack, L1->stacksize, TValue);
+}
+
+
+/*
+** open parts that may cause memory-allocation errors
+*/
+static void f_luaopen (lua_State *L, void *ud) {
+  global_State *g = G(L);
+  UNUSED(ud);
+  stack_init(L, L);  /* init stack */
+  sethvalue(L, gt(L), luaH_new(L, 0, 2));  /* table of globals */
+  sethvalue(L, registry(L), luaH_new(L, 0, 2));  /* registry */
+  luaS_resize(L, MINSTRTABSIZE);  /* initial size of string table */
+  luaT_init(L);
+  luaX_init(L);
+  luaS_fix(luaS_newliteral(L, MEMERRMSG));
+  g->GCthreshold = 4*g->totalbytes;
+}
+
+
+static void preinit_state (lua_State *L, global_State *g) {
+  G(L) = g;
+  L->stack = NULL;
+  L->stacksize = 0;
+  L->errorJmp = NULL;
+  L->hook = NULL;
+  L->hookmask = 0;
+  L->basehookcount = 0;
+  L->allowhook = 1;
+  resethookcount(L);
+  L->openupval = NULL;
+  L->size_ci = 0;
+  L->nCcalls = L->baseCcalls = 0;
+  L->status = 0;
+  L->base_ci = L->ci = NULL;
+  L->savedpc = NULL;
+  L->errfunc = 0;
+  setnilvalue(gt(L));
+}
+
+
+static void close_state (lua_State *L) {
+  global_State *g = G(L);
+  luaF_close(L, L->stack);  /* close all upvalues for this thread */
+  luaC_freeall(L);  /* collect all objects */
+  lua_assert(g->rootgc == obj2gco(L));
+  lua_assert(g->strt.nuse == 0);
+  luaM_freearray(L, G(L)->strt.hash, G(L)->strt.size, TString *);
+  luaZ_freebuffer(L, &g->buff);
+  freestack(L, L);
+  lua_assert(g->totalbytes == sizeof(LG));
+  (*g->frealloc)(g->ud, fromstate(L), state_size(LG), 0);
+}
+
+
+lua_State *luaE_newthread (lua_State *L) {
+  lua_State *L1 = tostate(luaM_malloc(L, state_size(lua_State)));
+  luaC_link(L, obj2gco(L1), LUA_TTHREAD);
+  setthvalue(L, L->top, L1); /* put thread on stack */
+  incr_top(L);
+  preinit_state(L1, G(L));
+  stack_init(L1, L);  /* init stack */
+  setobj2n(L, gt(L1), gt(L));  /* share table of globals */
+  L1->hookmask = L->hookmask;
+  L1->basehookcount = L->basehookcount;
+  L1->hook = L->hook;
+  resethookcount(L1);
+  lua_assert(!isdead(G(L), obj2gco(L1)));
+  L->top--; /* remove thread from stack */
+  return L1;
+}
+
+
+void luaE_freethread (lua_State *L, lua_State *L1) {
+  luaF_close(L1, L1->stack);  /* close all upvalues for this thread */
+  lua_assert(L1->openupval == NULL);
+  luai_userstatefree(L1);
+  freestack(L, L1);
+  luaM_freemem(L, fromstate(L1), state_size(lua_State));
+}
+
+
+LUA_API lua_State *lua_newstate (lua_Alloc f, void *ud) {
+  int i;
+  lua_State *L;
+  global_State *g;
+  void *l = (*f)(ud, NULL, 0, state_size(LG));
+  if (l == NULL) return NULL;
+  L = tostate(l);
+  g = &((LG *)L)->g;
+  L->next = NULL;
+  L->tt = LUA_TTHREAD;
+  g->currentwhite = bit2mask(WHITE0BIT, FIXEDBIT);
+  L->marked = luaC_white(g);
+  set2bits(L->marked, FIXEDBIT, SFIXEDBIT);
+  preinit_state(L, g);
+  g->frealloc = f;
+  g->ud = ud;
+  g->mainthread = L;
+  g->uvhead.u.l.prev = &g->uvhead;
+  g->uvhead.u.l.next = &g->uvhead;
+  g->GCthreshold = 0;  /* mark it as unfinished state */
+  g->estimate = 0;
+  g->strt.size = 0;
+  g->strt.nuse = 0;
+  g->strt.hash = NULL;
+  setnilvalue(registry(L));
+  luaZ_initbuffer(L, &g->buff);
+  g->panic = NULL;
+  g->gcstate = GCSpause;
+  g->gcflags = GCFlagsNone;
+  g->rootgc = obj2gco(L);
+  g->sweepstrgc = 0;
+  g->sweepgc = &g->rootgc;
+  g->gray = NULL;
+  g->grayagain = NULL;
+  g->weak = NULL;
+  g->tmudata = NULL;
+  g->totalbytes = sizeof(LG);
+  g->memlimit = 0;
+  g->gcpause = LUAI_GCPAUSE;
+  g->gcstepmul = LUAI_GCMUL;
+  g->gcdept = 0;
+#ifdef EGC_INITIAL_MODE
+  g->egcmode = EGC_INITIAL_MODE;
+#else
+  g->egcmode = 0;
+#endif
+#ifdef EGC_INITIAL_MEMLIMIT
+  g->memlimit = EGC_INITIAL_MEMLIMIT;
+#else
+  g->memlimit = 0;
+#endif
+  for (i=0; i<NUM_TAGS; i++) g->mt[i] = NULL;
+  if (luaD_rawrunprotected(L, f_luaopen, NULL) != 0) {
+    /* memory allocation error: free partial state */
+    close_state(L);
+    L = NULL;
+  }
+  else
+    luai_userstateopen(L);
+  return L;
+}
+
+
+static void callallgcTM (lua_State *L, void *ud) {
+  UNUSED(ud);
+  luaC_callGCTM(L);  /* call GC metamethods for all udata */
+}
+
+// BogdanM: modified for eLua interrupt support
+extern lua_State *luaL_newstate (void);
+static lua_State *lua_crtstate;
+
+lua_State *lua_open(void) {
+  lua_crtstate = luaL_newstate(); 
+  return lua_crtstate;
+}
+
+lua_State *lua_getstate(void) {
+  return lua_crtstate;
+}
+LUA_API void lua_close (lua_State *L) {
+#ifndef LUA_CROSS_COMPILER  
+  lua_sethook( L, NULL, 0, 0 );
+  lua_crtstate = NULL;
+  lua_pushnil( L );
+//  lua_rawseti( L, LUA_REGISTRYINDEX, LUA_INT_HANDLER_KEY );
+#endif  
+  L = G(L)->mainthread;  /* only the main thread can be closed */
+  lua_lock(L);
+  luaF_close(L, L->stack);  /* close all upvalues for this thread */
+  luaC_separateudata(L, 1);  /* separate udata that have GC metamethods */
+  L->errfunc = 0;  /* no error function during GC metamethods */
+  do {  /* repeat until no more errors */
+    L->ci = L->base_ci;
+    L->base = L->top = L->ci->base;
+    L->nCcalls = L->baseCcalls = 0;
+  } while (luaD_rawrunprotected(L, callallgcTM, NULL) != 0);
+  lua_assert(G(L)->tmudata == NULL);
+  luai_userstateclose(L);
+  close_state(L);
+}
+

components/external/lua/lua/lstate.h

@@ -0,0 +1,171 @@
+/*
+** $Id: lstate.h,v 2.24.1.2 2008/01/03 15:20:39 roberto Exp $
+** Global State
+** See Copyright Notice in lua.h
+*/
+
+#ifndef lstate_h
+#define lstate_h
+
+#include "lua.h"
+
+#include "lobject.h"
+#include "ltm.h"
+#include "lzio.h"
+
+
+
+struct lua_longjmp;  /* defined in ldo.c */
+
+
+/* table of globals */
+#define gt(L)	(&L->l_gt)
+
+/* registry */
+#define registry(L)	(&G(L)->l_registry)
+
+
+/* extra stack space to handle TM calls and some other extras */
+#define EXTRA_STACK   5
+
+
+#define BASIC_CI_SIZE           8
+
+#define BASIC_STACK_SIZE        (2*LUA_MINSTACK)
+
+
+
+typedef struct stringtable {
+  GCObject **hash;
+  lu_int32 nuse;  /* number of elements */
+  int size;
+} stringtable;
+
+
+/*
+** informations about a call
+*/
+typedef struct CallInfo {
+  StkId base;  /* base for this function */
+  StkId func;  /* function index in the stack */
+  StkId	top;  /* top for this function */
+  const Instruction *savedpc;
+  int nresults;  /* expected number of results from this function */
+  int tailcalls;  /* number of tail calls lost under this entry */
+} CallInfo;
+
+
+
+#define curr_func(L)	(ttisfunction(L->ci->func) ? clvalue(L->ci->func) : NULL)
+#define ci_func(ci)	(ttisfunction((ci)->func) ? clvalue((ci)->func) : NULL)
+#define f_isLua(ci)	(!ttislightfunction((ci)->func) && !ci_func(ci)->c.isC)
+#define isLua(ci)	(ttisfunction((ci)->func) && f_isLua(ci))
+
+
+/*
+** `global state', shared by all threads of this state
+*/
+typedef struct global_State {
+  stringtable strt;  /* hash table for strings */
+  lua_Alloc frealloc;  /* function to reallocate memory */
+  void *ud;         /* auxiliary data to `frealloc' */
+  lu_byte currentwhite;
+  lu_byte gcstate;  /* state of garbage collector */
+  lu_byte gcflags;  /* flags for the garbage collector */
+  int sweepstrgc;  /* position of sweep in `strt' */
+  GCObject *rootgc;  /* list of all collectable objects */
+  GCObject **sweepgc;  /* position of sweep in `rootgc' */
+  GCObject *gray;  /* list of gray objects */
+  GCObject *grayagain;  /* list of objects to be traversed atomically */
+  GCObject *weak;  /* list of weak tables (to be cleared) */
+  GCObject *tmudata;  /* last element of list of userdata to be GC */
+  Mbuffer buff;  /* temporary buffer for string concatentation */
+  lu_mem GCthreshold;
+  lu_mem totalbytes;  /* number of bytes currently allocated */
+  lu_mem memlimit;  /* maximum number of bytes that can be allocated, 0 = no limit. */
+  lu_mem estimate;  /* an estimate of number of bytes actually in use */
+  lu_mem gcdept;  /* how much GC is `behind schedule' */
+  int gcpause;  /* size of pause between successive GCs */
+  int gcstepmul;  /* GC `granularity' */
+  int egcmode;    /* emergency garbage collection operation mode */
+  lua_CFunction panic;  /* to be called in unprotected errors */
+  TValue l_registry;
+  struct lua_State *mainthread;
+  UpVal uvhead;  /* head of double-linked list of all open upvalues */
+  struct Table *mt[NUM_TAGS];  /* metatables for basic types */
+  TString *tmname[TM_N];  /* array with tag-method names */
+} global_State;
+
+
+/*
+** `per thread' state
+*/
+struct lua_State {
+  CommonHeader;
+  lu_byte status;
+  StkId top;  /* first free slot in the stack */
+  StkId base;  /* base of current function */
+  global_State *l_G;
+  CallInfo *ci;  /* call info for current function */
+  const Instruction *savedpc;  /* `savedpc' of current function */
+  StkId stack_last;  /* last free slot in the stack */
+  StkId stack;  /* stack base */
+  CallInfo *end_ci;  /* points after end of ci array*/
+  CallInfo *base_ci;  /* array of CallInfo's */
+  int stacksize;
+  int size_ci;  /* size of array `base_ci' */
+  unsigned short nCcalls;  /* number of nested C calls */
+  unsigned short baseCcalls;  /* nested C calls when resuming coroutine */
+  lu_byte hookmask;
+  lu_byte allowhook;
+  int basehookcount;
+  int hookcount;
+  lua_Hook hook;
+  TValue l_gt;  /* table of globals */
+  TValue env;  /* temporary place for environments */
+  GCObject *openupval;  /* list of open upvalues in this stack */
+  GCObject *gclist;
+  struct lua_longjmp *errorJmp;  /* current error recover point */
+  ptrdiff_t errfunc;  /* current error handling function (stack index) */
+};
+
+
+#define G(L)	(L->l_G)
+
+
+/*
+** Union of all collectable objects
+*/
+union GCObject {
+  GCheader gch;
+  union TString ts;
+  union Udata u;
+  union Closure cl;
+  struct Table h;
+  struct Proto p;
+  struct UpVal uv;
+  struct lua_State th;  /* thread */
+};
+
+
+/* macros to convert a GCObject into a specific value */
+#define rawgco2ts(o)	check_exp((o)->gch.tt == LUA_TSTRING, &((o)->ts))
+#define gco2ts(o)	(&rawgco2ts(o)->tsv)
+#define rawgco2u(o)	check_exp((o)->gch.tt == LUA_TUSERDATA, &((o)->u))
+#define gco2u(o)	(&rawgco2u(o)->uv)
+#define gco2cl(o)	check_exp((o)->gch.tt == LUA_TFUNCTION, &((o)->cl))
+#define gco2h(o)	check_exp((o)->gch.tt == LUA_TTABLE, &((o)->h))
+#define gco2p(o)	check_exp((o)->gch.tt == LUA_TPROTO, &((o)->p))
+#define gco2uv(o)	check_exp((o)->gch.tt == LUA_TUPVAL, &((o)->uv))
+#define ngcotouv(o) \
+	check_exp((o) == NULL || (o)->gch.tt == LUA_TUPVAL, &((o)->uv))
+#define gco2th(o)	check_exp((o)->gch.tt == LUA_TTHREAD, &((o)->th))
+
+/* macro to convert any Lua object into a GCObject */
+#define obj2gco(v)	(cast(GCObject *, (v)))
+
+LUAI_FUNC lua_State *luaE_newthread (lua_State *L);
+LUAI_FUNC void luaE_freethread (lua_State *L, lua_State *L1);
+
+#endif
+