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new facility for dumping chunks

This commit is contained in:
Roberto Ierusalimschy 2002-10-25 18:31:28 -03:00
parent de00d0d0ad
commit 118e9cd843
3 changed files with 47 additions and 4 deletions
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20
lapi.c
View File

@ -1,5 +1,5 @@
/*
** $Id: lapi.c,v 1.213 2002/09/20 17:01:24 roberto Exp roberto $
** $Id: lapi.c,v 1.214 2002/10/25 20:05:28 roberto Exp roberto $
** Lua API
** See Copyright Notice in lua.h
*/
@ -127,6 +127,7 @@ LUA_API lua_State *lua_newthread (lua_State *L) {
}
/*
** basic stack manipulation
*/
@ -681,6 +682,23 @@ LUA_API int lua_load (lua_State *L, lua_Chunkreader reader, void *data,
}
LUA_API int lua_dump (lua_State *L, lua_Chunkwriter writer, void *data) {
int status;
TObject *o;
lua_lock(L);
api_checknelems(L, 1);
o = L->top - 1;
if (isLfunction(o) && clvalue(o)->l.nupvalues == 0) {
luaU_dump(L, clvalue(o)->l.p, writer, data);
status = 1;
}
else
status = 0;
lua_unlock(L);
return status;
}
/*
** Garbage-collection functions
*/

22
lbaselib.c
View File

@ -1,5 +1,5 @@
/*
** $Id: lbaselib.c,v 1.100 2002/10/22 19:41:08 roberto Exp roberto $
** $Id: lbaselib.c,v 1.101 2002/10/25 20:05:28 roberto Exp roberto $
** Basic library
** See Copyright Notice in lua.h
*/
@ -271,6 +271,25 @@ static int luaB_loadstring (lua_State *L) {
}
static int writer (lua_State *L, const void* b, size_t size, void* B) {
(void)L;
luaL_addlstring((luaL_Buffer*) B, b, size);
return 1;
}
static int luaB_stringdump (lua_State *L) {
luaL_Buffer b;
luaL_check_type(L, 1, LUA_TFUNCTION);
luaL_buffinit(L,&b);
if (!lua_dump(L, writer, &b))
luaL_error(L, "unable to dump given function");
luaL_pushresult(&b);
return 1;
}
static int luaB_loadfile (lua_State *L) {
const char *fname = luaL_opt_string(L, 1, NULL);
return passresults(L, luaL_loadfile(L, fname));
@ -524,6 +543,7 @@ static const luaL_reg base_funcs[] = {
{"collectgarbage", luaB_collectgarbage},
{"gcinfo", luaB_gcinfo},
{"loadfile", luaB_loadfile},
{"stringdump", luaB_stringdump},
{"dofile", luaB_dofile},
{"loadstring", luaB_loadstring},
{"require", luaB_require},

9
lua.h
View File

@ -1,5 +1,5 @@
/*
** $Id: lua.h,v 1.159 2002/10/22 17:21:25 roberto Exp roberto $
** $Id: lua.h,v 1.160 2002/10/25 20:05:28 roberto Exp roberto $
** Lua - An Extensible Extension Language
** Tecgraf: Computer Graphics Technology Group, PUC-Rio, Brazil
** http://www.lua.org mailto:info@lua.org
@ -52,10 +52,13 @@ typedef int (*lua_CFunction) (lua_State *L);
/*
** functions that read blocks when loading Lua chunk
** functions that read/write blocks when loading/dumping Lua chunks
*/
typedef const char * (*lua_Chunkreader) (lua_State *L, void *ud, size_t *sz);
typedef int (*lua_Chunkwriter) (lua_State *L, const void* p,
size_t sz, void* ud);
/*
** basic types
@ -192,6 +195,8 @@ LUA_API int lua_pcall (lua_State *L, int nargs, int nresults, int errfunc);
LUA_API int lua_load (lua_State *L, lua_Chunkreader reader, void *dt,
const char *chunkname);
LUA_API int lua_dump (lua_State *L, lua_Chunkwriter writer, void *data);
/*
** coroutine functions