From d7ca8ea57b3a189fae5d7f69693ca656e6deedae Mon Sep 17 00:00:00 2001 From: Alexander Harkness Date: Sun, 24 Nov 2013 14:27:32 +0000 Subject: Moved Lua --- lua-5.1.4/src/lbaselib.c | 653 ----------------------------------------------- 1 file changed, 653 deletions(-) delete mode 100644 lua-5.1.4/src/lbaselib.c (limited to 'lua-5.1.4/src/lbaselib.c') diff --git a/lua-5.1.4/src/lbaselib.c b/lua-5.1.4/src/lbaselib.c deleted file mode 100644 index 2a4c079d3..000000000 --- a/lua-5.1.4/src/lbaselib.c +++ /dev/null @@ -1,653 +0,0 @@ -/* -** $Id: lbaselib.c,v 1.191.1.6 2008/02/14 16:46:22 roberto Exp $ -** Basic library -** See Copyright Notice in lua.h -*/ - - - -#include -#include -#include -#include - -#define lbaselib_c -#define LUA_LIB - -#include "lua.h" - -#include "lauxlib.h" -#include "lualib.h" - - - - -/* -** If your system does not support `stdout', you can just remove this function. -** If you need, you can define your own `print' function, following this -** model but changing `fputs' to put the strings at a proper place -** (a console window or a log file, for instance). -*/ -static int luaB_print (lua_State *L) { - int n = lua_gettop(L); /* number of arguments */ - int i; - lua_getglobal(L, "tostring"); - for (i=1; i<=n; i++) { - const char *s; - lua_pushvalue(L, -1); /* function to be called */ - lua_pushvalue(L, i); /* value to print */ - lua_call(L, 1, 1); - s = lua_tostring(L, -1); /* get result */ - if (s == NULL) - return luaL_error(L, LUA_QL("tostring") " must return a string to " - LUA_QL("print")); - if (i>1) fputs("\t", stdout); - fputs(s, stdout); - lua_pop(L, 1); /* pop result */ - } - fputs("\n", stdout); - return 0; -} - - -static int luaB_tonumber (lua_State *L) { - int base = luaL_optint(L, 2, 10); - if (base == 10) { /* standard conversion */ - luaL_checkany(L, 1); - if (lua_isnumber(L, 1)) { - lua_pushnumber(L, lua_tonumber(L, 1)); - return 1; - } - } - else { - const char *s1 = luaL_checkstring(L, 1); - char *s2; - unsigned long n; - luaL_argcheck(L, 2 <= base && base <= 36, 2, "base out of range"); - n = strtoul(s1, &s2, base); - if (s1 != s2) { /* at least one valid digit? */ - while (isspace((unsigned char)(*s2))) s2++; /* skip trailing spaces */ - if (*s2 == '\0') { /* no invalid trailing characters? */ - lua_pushnumber(L, (lua_Number)n); - return 1; - } - } - } - lua_pushnil(L); /* else not a number */ - return 1; -} - - -static int luaB_error (lua_State *L) { - int level = luaL_optint(L, 2, 1); - lua_settop(L, 1); - if (lua_isstring(L, 1) && level > 0) { /* add extra information? */ - luaL_where(L, level); - lua_pushvalue(L, 1); - lua_concat(L, 2); - } - return lua_error(L); -} - - -static int luaB_getmetatable (lua_State *L) { - luaL_checkany(L, 1); - if (!lua_getmetatable(L, 1)) { - lua_pushnil(L); - return 1; /* no metatable */ - } - luaL_getmetafield(L, 1, "__metatable"); - return 1; /* returns either __metatable field (if present) or metatable */ -} - - -static int luaB_setmetatable (lua_State *L) { - int t = lua_type(L, 2); - luaL_checktype(L, 1, LUA_TTABLE); - luaL_argcheck(L, t == LUA_TNIL || t == LUA_TTABLE, 2, - "nil or table expected"); - if (luaL_getmetafield(L, 1, "__metatable")) - luaL_error(L, "cannot change a protected metatable"); - lua_settop(L, 2); - lua_setmetatable(L, 1); - return 1; -} - - -static void getfunc (lua_State *L, int opt) { - if (lua_isfunction(L, 1)) lua_pushvalue(L, 1); - else { - lua_Debug ar; - int level = opt ? luaL_optint(L, 1, 1) : luaL_checkint(L, 1); - luaL_argcheck(L, level >= 0, 1, "level must be non-negative"); - if (lua_getstack(L, level, &ar) == 0) - luaL_argerror(L, 1, "invalid level"); - lua_getinfo(L, "f", &ar); - if (lua_isnil(L, -1)) - luaL_error(L, "no function environment for tail call at level %d", - level); - } -} - - -static int luaB_getfenv (lua_State *L) { - getfunc(L, 1); - if (lua_iscfunction(L, -1)) /* is a C function? */ - lua_pushvalue(L, LUA_GLOBALSINDEX); /* return the thread's global env. */ - else - lua_getfenv(L, -1); - return 1; -} - - -static int luaB_setfenv (lua_State *L) { - luaL_checktype(L, 2, LUA_TTABLE); - getfunc(L, 0); - lua_pushvalue(L, 2); - if (lua_isnumber(L, 1) && lua_tonumber(L, 1) == 0) { - /* change environment of current thread */ - lua_pushthread(L); - lua_insert(L, -2); - lua_setfenv(L, -2); - return 0; - } - else if (lua_iscfunction(L, -2) || lua_setfenv(L, -2) == 0) - luaL_error(L, - LUA_QL("setfenv") " cannot change environment of given object"); - return 1; -} - - -static int luaB_rawequal (lua_State *L) { - luaL_checkany(L, 1); - luaL_checkany(L, 2); - lua_pushboolean(L, lua_rawequal(L, 1, 2)); - return 1; -} - - -static int luaB_rawget (lua_State *L) { - luaL_checktype(L, 1, LUA_TTABLE); - luaL_checkany(L, 2); - lua_settop(L, 2); - lua_rawget(L, 1); - return 1; -} - -static int luaB_rawset (lua_State *L) { - luaL_checktype(L, 1, LUA_TTABLE); - luaL_checkany(L, 2); - luaL_checkany(L, 3); - lua_settop(L, 3); - lua_rawset(L, 1); - return 1; -} - - -static int luaB_gcinfo (lua_State *L) { - lua_pushinteger(L, lua_getgccount(L)); - return 1; -} - - -static int luaB_collectgarbage (lua_State *L) { - static const char *const opts[] = {"stop", "restart", "collect", - "count", "step", "setpause", "setstepmul", NULL}; - static const int optsnum[] = {LUA_GCSTOP, LUA_GCRESTART, LUA_GCCOLLECT, - LUA_GCCOUNT, LUA_GCSTEP, LUA_GCSETPAUSE, LUA_GCSETSTEPMUL}; - int o = luaL_checkoption(L, 1, "collect", opts); - int ex = luaL_optint(L, 2, 0); - int res = lua_gc(L, optsnum[o], ex); - switch (optsnum[o]) { - case LUA_GCCOUNT: { - int b = lua_gc(L, LUA_GCCOUNTB, 0); - lua_pushnumber(L, res + ((lua_Number)b/1024)); - return 1; - } - case LUA_GCSTEP: { - lua_pushboolean(L, res); - return 1; - } - default: { - lua_pushnumber(L, res); - return 1; - } - } -} - - -static int luaB_type (lua_State *L) { - luaL_checkany(L, 1); - lua_pushstring(L, luaL_typename(L, 1)); - return 1; -} - - -static int luaB_next (lua_State *L) { - luaL_checktype(L, 1, LUA_TTABLE); - lua_settop(L, 2); /* create a 2nd argument if there isn't one */ - if (lua_next(L, 1)) - return 2; - else { - lua_pushnil(L); - return 1; - } -} - - -static int luaB_pairs (lua_State *L) { - luaL_checktype(L, 1, LUA_TTABLE); - lua_pushvalue(L, lua_upvalueindex(1)); /* return generator, */ - lua_pushvalue(L, 1); /* state, */ - lua_pushnil(L); /* and initial value */ - return 3; -} - - -static int ipairsaux (lua_State *L) { - int i = luaL_checkint(L, 2); - luaL_checktype(L, 1, LUA_TTABLE); - i++; /* next value */ - lua_pushinteger(L, i); - lua_rawgeti(L, 1, i); - return (lua_isnil(L, -1)) ? 0 : 2; -} - - -static int luaB_ipairs (lua_State *L) { - luaL_checktype(L, 1, LUA_TTABLE); - lua_pushvalue(L, lua_upvalueindex(1)); /* return generator, */ - lua_pushvalue(L, 1); /* state, */ - lua_pushinteger(L, 0); /* and initial value */ - return 3; -} - - -static int load_aux (lua_State *L, int status) { - if (status == 0) /* OK? */ - return 1; - else { - lua_pushnil(L); - lua_insert(L, -2); /* put before error message */ - return 2; /* return nil plus error message */ - } -} - - -static int luaB_loadstring (lua_State *L) { - size_t l; - const char *s = luaL_checklstring(L, 1, &l); - const char *chunkname = luaL_optstring(L, 2, s); - return load_aux(L, luaL_loadbuffer(L, s, l, chunkname)); -} - - -static int luaB_loadfile (lua_State *L) { - const char *fname = luaL_optstring(L, 1, NULL); - return load_aux(L, luaL_loadfile(L, fname)); -} - - -/* -** Reader for generic `load' function: `lua_load' uses the -** stack for internal stuff, so the reader cannot change the -** stack top. Instead, it keeps its resulting string in a -** reserved slot inside the stack. -*/ -static const char *generic_reader (lua_State *L, void *ud, size_t *size) { - (void)ud; /* to avoid warnings */ - luaL_checkstack(L, 2, "too many nested functions"); - lua_pushvalue(L, 1); /* get function */ - lua_call(L, 0, 1); /* call it */ - if (lua_isnil(L, -1)) { - *size = 0; - return NULL; - } - else if (lua_isstring(L, -1)) { - lua_replace(L, 3); /* save string in a reserved stack slot */ - return lua_tolstring(L, 3, size); - } - else luaL_error(L, "reader function must return a string"); - return NULL; /* to avoid warnings */ -} - - -static int luaB_load (lua_State *L) { - int status; - const char *cname = luaL_optstring(L, 2, "=(load)"); - luaL_checktype(L, 1, LUA_TFUNCTION); - lua_settop(L, 3); /* function, eventual name, plus one reserved slot */ - status = lua_load(L, generic_reader, NULL, cname); - return load_aux(L, status); -} - - -static int luaB_dofile (lua_State *L) { - const char *fname = luaL_optstring(L, 1, NULL); - int n = lua_gettop(L); - if (luaL_loadfile(L, fname) != 0) lua_error(L); - lua_call(L, 0, LUA_MULTRET); - return lua_gettop(L) - n; -} - - -static int luaB_assert (lua_State *L) { - luaL_checkany(L, 1); - if (!lua_toboolean(L, 1)) - return luaL_error(L, "%s", luaL_optstring(L, 2, "assertion failed!")); - return lua_gettop(L); -} - - -static int luaB_unpack (lua_State *L) { - int i, e, n; - luaL_checktype(L, 1, LUA_TTABLE); - i = luaL_optint(L, 2, 1); - e = luaL_opt(L, luaL_checkint, 3, luaL_getn(L, 1)); - if (i > e) return 0; /* empty range */ - n = e - i + 1; /* number of elements */ - if (n <= 0 || !lua_checkstack(L, n)) /* n <= 0 means arith. overflow */ - return luaL_error(L, "too many results to unpack"); - lua_rawgeti(L, 1, i); /* push arg[i] (avoiding overflow problems) */ - while (i++ < e) /* push arg[i + 1...e] */ - lua_rawgeti(L, 1, i); - return n; -} - - -static int luaB_select (lua_State *L) { - int n = lua_gettop(L); - if (lua_type(L, 1) == LUA_TSTRING && *lua_tostring(L, 1) == '#') { - lua_pushinteger(L, n-1); - return 1; - } - else { - int i = luaL_checkint(L, 1); - if (i < 0) i = n + i; - else if (i > n) i = n; - luaL_argcheck(L, 1 <= i, 1, "index out of range"); - return n - i; - } -} - - -static int luaB_pcall (lua_State *L) { - int status; - luaL_checkany(L, 1); - status = lua_pcall(L, lua_gettop(L) - 1, LUA_MULTRET, 0); - lua_pushboolean(L, (status == 0)); - lua_insert(L, 1); - return lua_gettop(L); /* return status + all results */ -} - - -static int luaB_xpcall (lua_State *L) { - int status; - luaL_checkany(L, 2); - lua_settop(L, 2); - lua_insert(L, 1); /* put error function under function to be called */ - status = lua_pcall(L, 0, LUA_MULTRET, 1); - lua_pushboolean(L, (status == 0)); - lua_replace(L, 1); - return lua_gettop(L); /* return status + all results */ -} - - -static int luaB_tostring (lua_State *L) { - luaL_checkany(L, 1); - if (luaL_callmeta(L, 1, "__tostring")) /* is there a metafield? */ - return 1; /* use its value */ - switch (lua_type(L, 1)) { - case LUA_TNUMBER: - lua_pushstring(L, lua_tostring(L, 1)); - break; - case LUA_TSTRING: - lua_pushvalue(L, 1); - break; - case LUA_TBOOLEAN: - lua_pushstring(L, (lua_toboolean(L, 1) ? "true" : "false")); - break; - case LUA_TNIL: - lua_pushliteral(L, "nil"); - break; - default: - lua_pushfstring(L, "%s: %p", luaL_typename(L, 1), lua_topointer(L, 1)); - break; - } - return 1; -} - - -static int luaB_newproxy (lua_State *L) { - lua_settop(L, 1); - lua_newuserdata(L, 0); /* create proxy */ - if (lua_toboolean(L, 1) == 0) - return 1; /* no metatable */ - else if (lua_isboolean(L, 1)) { - lua_newtable(L); /* create a new metatable `m' ... */ - lua_pushvalue(L, -1); /* ... and mark `m' as a valid metatable */ - lua_pushboolean(L, 1); - lua_rawset(L, lua_upvalueindex(1)); /* weaktable[m] = true */ - } - else { - int validproxy = 0; /* to check if weaktable[metatable(u)] == true */ - if (lua_getmetatable(L, 1)) { - lua_rawget(L, lua_upvalueindex(1)); - validproxy = lua_toboolean(L, -1); - lua_pop(L, 1); /* remove value */ - } - luaL_argcheck(L, validproxy, 1, "boolean or proxy expected"); - lua_getmetatable(L, 1); /* metatable is valid; get it */ - } - lua_setmetatable(L, 2); - return 1; -} - - -static const luaL_Reg base_funcs[] = { - {"assert", luaB_assert}, - {"collectgarbage", luaB_collectgarbage}, - {"dofile", luaB_dofile}, - {"error", luaB_error}, - {"gcinfo", luaB_gcinfo}, - {"getfenv", luaB_getfenv}, - {"getmetatable", luaB_getmetatable}, - {"loadfile", luaB_loadfile}, - {"load", luaB_load}, - {"loadstring", luaB_loadstring}, - {"next", luaB_next}, - {"pcall", luaB_pcall}, - {"print", luaB_print}, - {"rawequal", luaB_rawequal}, - {"rawget", luaB_rawget}, - {"rawset", luaB_rawset}, - {"select", luaB_select}, - {"setfenv", luaB_setfenv}, - {"setmetatable", luaB_setmetatable}, - {"tonumber", luaB_tonumber}, - {"tostring", luaB_tostring}, - {"type", luaB_type}, - {"unpack", luaB_unpack}, - {"xpcall", luaB_xpcall}, - {NULL, NULL} -}; - - -/* -** {====================================================== -** Coroutine library -** ======================================================= -*/ - -#define CO_RUN 0 /* running */ -#define CO_SUS 1 /* suspended */ -#define CO_NOR 2 /* 'normal' (it resumed another coroutine) */ -#define CO_DEAD 3 - -static const char *const statnames[] = - {"running", "suspended", "normal", "dead"}; - -static int costatus (lua_State *L, lua_State *co) { - if (L == co) return CO_RUN; - switch (lua_status(co)) { - case LUA_YIELD: - return CO_SUS; - case 0: { - lua_Debug ar; - if (lua_getstack(co, 0, &ar) > 0) /* does it have frames? */ - return CO_NOR; /* it is running */ - else if (lua_gettop(co) == 0) - return CO_DEAD; - else - return CO_SUS; /* initial state */ - } - default: /* some error occured */ - return CO_DEAD; - } -} - - -static int luaB_costatus (lua_State *L) { - lua_State *co = lua_tothread(L, 1); - luaL_argcheck(L, co, 1, "coroutine expected"); - lua_pushstring(L, statnames[costatus(L, co)]); - return 1; -} - - -static int auxresume (lua_State *L, lua_State *co, int narg) { - int status = costatus(L, co); - if (!lua_checkstack(co, narg)) - luaL_error(L, "too many arguments to resume"); - if (status != CO_SUS) { - lua_pushfstring(L, "cannot resume %s coroutine", statnames[status]); - return -1; /* error flag */ - } - lua_xmove(L, co, narg); - lua_setlevel(L, co); - status = lua_resume(co, narg); - if (status == 0 || status == LUA_YIELD) { - int nres = lua_gettop(co); - if (!lua_checkstack(L, nres + 1)) - luaL_error(L, "too many results to resume"); - lua_xmove(co, L, nres); /* move yielded values */ - return nres; - } - else { - lua_xmove(co, L, 1); /* move error message */ - return -1; /* error flag */ - } -} - - -static int luaB_coresume (lua_State *L) { - lua_State *co = lua_tothread(L, 1); - int r; - luaL_argcheck(L, co, 1, "coroutine expected"); - r = auxresume(L, co, lua_gettop(L) - 1); - if (r < 0) { - lua_pushboolean(L, 0); - lua_insert(L, -2); - return 2; /* return false + error message */ - } - else { - lua_pushboolean(L, 1); - lua_insert(L, -(r + 1)); - return r + 1; /* return true + `resume' returns */ - } -} - - -static int luaB_auxwrap (lua_State *L) { - lua_State *co = lua_tothread(L, lua_upvalueindex(1)); - int r = auxresume(L, co, lua_gettop(L)); - if (r < 0) { - if (lua_isstring(L, -1)) { /* error object is a string? */ - luaL_where(L, 1); /* add extra info */ - lua_insert(L, -2); - lua_concat(L, 2); - } - lua_error(L); /* propagate error */ - } - return r; -} - - -static int luaB_cocreate (lua_State *L) { - lua_State *NL = lua_newthread(L); - luaL_argcheck(L, lua_isfunction(L, 1) && !lua_iscfunction(L, 1), 1, - "Lua function expected"); - lua_pushvalue(L, 1); /* move function to top */ - lua_xmove(L, NL, 1); /* move function from L to NL */ - return 1; -} - - -static int luaB_cowrap (lua_State *L) { - luaB_cocreate(L); - lua_pushcclosure(L, luaB_auxwrap, 1); - return 1; -} - - -static int luaB_yield (lua_State *L) { - return lua_yield(L, lua_gettop(L)); -} - - -static int luaB_corunning (lua_State *L) { - if (lua_pushthread(L)) - lua_pushnil(L); /* main thread is not a coroutine */ - return 1; -} - - -static const luaL_Reg co_funcs[] = { - {"create", luaB_cocreate}, - {"resume", luaB_coresume}, - {"running", luaB_corunning}, - {"status", luaB_costatus}, - {"wrap", luaB_cowrap}, - {"yield", luaB_yield}, - {NULL, NULL} -}; - -/* }====================================================== */ - - -static void auxopen (lua_State *L, const char *name, - lua_CFunction f, lua_CFunction u) { - lua_pushcfunction(L, u); - lua_pushcclosure(L, f, 1); - lua_setfield(L, -2, name); -} - - -static void base_open (lua_State *L) { - /* set global _G */ - lua_pushvalue(L, LUA_GLOBALSINDEX); - lua_setglobal(L, "_G"); - /* open lib into global table */ - luaL_register(L, "_G", base_funcs); - lua_pushliteral(L, LUA_VERSION); - lua_setglobal(L, "_VERSION"); /* set global _VERSION */ - /* `ipairs' and `pairs' need auxliliary functions as upvalues */ - auxopen(L, "ipairs", luaB_ipairs, ipairsaux); - auxopen(L, "pairs", luaB_pairs, luaB_next); - /* `newproxy' needs a weaktable as upvalue */ - lua_createtable(L, 0, 1); /* new table `w' */ - lua_pushvalue(L, -1); /* `w' will be its own metatable */ - lua_setmetatable(L, -2); - lua_pushliteral(L, "kv"); - lua_setfield(L, -2, "__mode"); /* metatable(w).__mode = "kv" */ - lua_pushcclosure(L, luaB_newproxy, 1); - lua_setglobal(L, "newproxy"); /* set global `newproxy' */ -} - - -LUALIB_API int luaopen_base (lua_State *L) { - base_open(L); - luaL_register(L, LUA_COLIBNAME, co_funcs); - return 2; -} - -- cgit v1.2.3