diff options
Diffstat (limited to '3rdparty/lua/src/lbaselib.c')
| -rw-r--r-- | 3rdparty/lua/src/lbaselib.c | 498 |
1 files changed, 0 insertions, 498 deletions
diff --git a/3rdparty/lua/src/lbaselib.c b/3rdparty/lua/src/lbaselib.c deleted file mode 100644 index 08523e6..0000000 --- a/3rdparty/lua/src/lbaselib.c +++ /dev/null @@ -1,498 +0,0 @@ -/* -** $Id: lbaselib.c,v 1.314 2016/09/05 19:06:34 roberto Exp $ -** Basic library -** See Copyright Notice in lua.h -*/ - -#define lbaselib_c -#define LUA_LIB - -#include "lprefix.h" - - -#include <ctype.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include "lua.h" - -#include "lauxlib.h" -#include "lualib.h" - - -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; - size_t l; - lua_pushvalue(L, -1); /* function to be called */ - lua_pushvalue(L, i); /* value to print */ - lua_call(L, 1, 1); - s = lua_tolstring(L, -1, &l); /* get result */ - if (s == NULL) - return luaL_error(L, "'tostring' must return a string to 'print'"); - if (i>1) lua_writestring("\t", 1); - lua_writestring(s, l); - lua_pop(L, 1); /* pop result */ - } - lua_writeline(); - return 0; -} - - -#define SPACECHARS " \f\n\r\t\v" - -static const char *b_str2int (const char *s, int base, lua_Integer *pn) { - lua_Unsigned n = 0; - int neg = 0; - s += strspn(s, SPACECHARS); /* skip initial spaces */ - if (*s == '-') { s++; neg = 1; } /* handle signal */ - else if (*s == '+') s++; - if (!isalnum((unsigned char)*s)) /* no digit? */ - return NULL; - do { - int digit = (isdigit((unsigned char)*s)) ? *s - '0' - : (toupper((unsigned char)*s) - 'A') + 10; - if (digit >= base) return NULL; /* invalid numeral */ - n = n * base + digit; - s++; - } while (isalnum((unsigned char)*s)); - s += strspn(s, SPACECHARS); /* skip trailing spaces */ - *pn = (lua_Integer)((neg) ? (0u - n) : n); - return s; -} - - -static int luaB_tonumber (lua_State *L) { - if (lua_isnoneornil(L, 2)) { /* standard conversion? */ - luaL_checkany(L, 1); - if (lua_type(L, 1) == LUA_TNUMBER) { /* already a number? */ - lua_settop(L, 1); /* yes; return it */ - return 1; - } - else { - size_t l; - const char *s = lua_tolstring(L, 1, &l); - if (s != NULL && lua_stringtonumber(L, s) == l + 1) - return 1; /* successful conversion to number */ - /* else not a number */ - } - } - else { - size_t l; - const char *s; - lua_Integer n = 0; /* to avoid warnings */ - lua_Integer base = luaL_checkinteger(L, 2); - luaL_checktype(L, 1, LUA_TSTRING); /* no numbers as strings */ - s = lua_tolstring(L, 1, &l); - luaL_argcheck(L, 2 <= base && base <= 36, 2, "base out of range"); - if (b_str2int(s, (int)base, &n) == s + l) { - lua_pushinteger(L, n); - return 1; - } /* else not a number */ - } /* else not a number */ - lua_pushnil(L); /* not a number */ - return 1; -} - - -static int luaB_error (lua_State *L) { - int level = (int)luaL_optinteger(L, 2, 1); - lua_settop(L, 1); - if (lua_type(L, 1) == LUA_TSTRING && level > 0) { - luaL_where(L, level); /* add extra information */ - 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") != LUA_TNIL) - return luaL_error(L, "cannot change a protected metatable"); - lua_settop(L, 2); - lua_setmetatable(L, 1); - 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_rawlen (lua_State *L) { - int t = lua_type(L, 1); - luaL_argcheck(L, t == LUA_TTABLE || t == LUA_TSTRING, 1, - "table or string expected"); - lua_pushinteger(L, lua_rawlen(L, 1)); - 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_collectgarbage (lua_State *L) { - static const char *const opts[] = {"stop", "restart", "collect", - "count", "step", "setpause", "setstepmul", - "isrunning", NULL}; - static const int optsnum[] = {LUA_GCSTOP, LUA_GCRESTART, LUA_GCCOLLECT, - LUA_GCCOUNT, LUA_GCSTEP, LUA_GCSETPAUSE, LUA_GCSETSTEPMUL, - LUA_GCISRUNNING}; - int o = optsnum[luaL_checkoption(L, 1, "collect", opts)]; - int ex = (int)luaL_optinteger(L, 2, 0); - int res = lua_gc(L, o, ex); - switch (o) { - case LUA_GCCOUNT: { - int b = lua_gc(L, LUA_GCCOUNTB, 0); - lua_pushnumber(L, (lua_Number)res + ((lua_Number)b/1024)); - return 1; - } - case LUA_GCSTEP: case LUA_GCISRUNNING: { - lua_pushboolean(L, res); - return 1; - } - default: { - lua_pushinteger(L, res); - return 1; - } - } -} - - -static int luaB_type (lua_State *L) { - int t = lua_type(L, 1); - luaL_argcheck(L, t != LUA_TNONE, 1, "value expected"); - lua_pushstring(L, lua_typename(L, t)); - return 1; -} - - -static int pairsmeta (lua_State *L, const char *method, int iszero, - lua_CFunction iter) { - luaL_checkany(L, 1); - if (luaL_getmetafield(L, 1, method) == LUA_TNIL) { /* no metamethod? */ - lua_pushcfunction(L, iter); /* will return generator, */ - lua_pushvalue(L, 1); /* state, */ - if (iszero) lua_pushinteger(L, 0); /* and initial value */ - else lua_pushnil(L); - } - else { - lua_pushvalue(L, 1); /* argument 'self' to metamethod */ - lua_call(L, 1, 3); /* get 3 values from metamethod */ - } - return 3; -} - - -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) { - return pairsmeta(L, "__pairs", 0, luaB_next); -} - - -/* -** Traversal function for 'ipairs' -*/ -static int ipairsaux (lua_State *L) { - lua_Integer i = luaL_checkinteger(L, 2) + 1; - lua_pushinteger(L, i); - return (lua_geti(L, 1, i) == LUA_TNIL) ? 1 : 2; -} - - -/* -** 'ipairs' function. Returns 'ipairsaux', given "table", 0. -** (The given "table" may not be a table.) -*/ -static int luaB_ipairs (lua_State *L) { -#if defined(LUA_COMPAT_IPAIRS) - return pairsmeta(L, "__ipairs", 1, ipairsaux); -#else - luaL_checkany(L, 1); - lua_pushcfunction(L, ipairsaux); /* iteration function */ - lua_pushvalue(L, 1); /* state */ - lua_pushinteger(L, 0); /* initial value */ - return 3; -#endif -} - - -static int load_aux (lua_State *L, int status, int envidx) { - if (status == LUA_OK) { - if (envidx != 0) { /* 'env' parameter? */ - lua_pushvalue(L, envidx); /* environment for loaded function */ - if (!lua_setupvalue(L, -2, 1)) /* set it as 1st upvalue */ - lua_pop(L, 1); /* remove 'env' if not used by previous call */ - } - return 1; - } - else { /* error (message is on top of the stack) */ - lua_pushnil(L); - lua_insert(L, -2); /* put before error message */ - return 2; /* return nil plus error message */ - } -} - - -static int luaB_loadfile (lua_State *L) { - const char *fname = luaL_optstring(L, 1, NULL); - const char *mode = luaL_optstring(L, 2, NULL); - int env = (!lua_isnone(L, 3) ? 3 : 0); /* 'env' index or 0 if no 'env' */ - int status = luaL_loadfilex(L, fname, mode); - return load_aux(L, status, env); -} - - -/* -** {====================================================== -** Generic Read function -** ======================================================= -*/ - - -/* -** reserved slot, above all arguments, to hold a copy of the returned -** string to avoid it being collected while parsed. 'load' has four -** optional arguments (chunk, source name, mode, and environment). -*/ -#define RESERVEDSLOT 5 - - -/* -** 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); /* not used */ - 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)) { - lua_pop(L, 1); /* pop result */ - *size = 0; - return NULL; - } - else if (!lua_isstring(L, -1)) - luaL_error(L, "reader function must return a string"); - lua_replace(L, RESERVEDSLOT); /* save string in reserved slot */ - return lua_tolstring(L, RESERVEDSLOT, size); -} - - -static int luaB_load (lua_State *L) { - int status; - size_t l; - const char *s = lua_tolstring(L, 1, &l); - const char *mode = luaL_optstring(L, 3, "bt"); - int env = (!lua_isnone(L, 4) ? 4 : 0); /* 'env' index or 0 if no 'env' */ - if (s != NULL) { /* loading a string? */ - const char *chunkname = luaL_optstring(L, 2, s); - status = luaL_loadbufferx(L, s, l, chunkname, mode); - } - else { /* loading from a reader function */ - const char *chunkname = luaL_optstring(L, 2, "=(load)"); - luaL_checktype(L, 1, LUA_TFUNCTION); - lua_settop(L, RESERVEDSLOT); /* create reserved slot */ - status = lua_load(L, generic_reader, NULL, chunkname, mode); - } - return load_aux(L, status, env); -} - -/* }====================================================== */ - - -static int dofilecont (lua_State *L, int d1, lua_KContext d2) { - (void)d1; (void)d2; /* only to match 'lua_Kfunction' prototype */ - return lua_gettop(L) - 1; -} - - -static int luaB_dofile (lua_State *L) { - const char *fname = luaL_optstring(L, 1, NULL); - lua_settop(L, 1); - if (luaL_loadfile(L, fname) != LUA_OK) - return lua_error(L); - lua_callk(L, 0, LUA_MULTRET, 0, dofilecont); - return dofilecont(L, 0, 0); -} - - -static int luaB_assert (lua_State *L) { - if (lua_toboolean(L, 1)) /* condition is true? */ - return lua_gettop(L); /* return all arguments */ - else { /* error */ - luaL_checkany(L, 1); /* there must be a condition */ - lua_remove(L, 1); /* remove it */ - lua_pushliteral(L, "assertion failed!"); /* default message */ - lua_settop(L, 1); /* leave only message (default if no other one) */ - return luaB_error(L); /* call 'error' */ - } -} - - -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 { - lua_Integer i = luaL_checkinteger(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 - (int)i; - } -} - - -/* -** Continuation function for 'pcall' and 'xpcall'. Both functions -** already pushed a 'true' before doing the call, so in case of success -** 'finishpcall' only has to return everything in the stack minus -** 'extra' values (where 'extra' is exactly the number of items to be -** ignored). -*/ -static int finishpcall (lua_State *L, int status, lua_KContext extra) { - if (status != LUA_OK && status != LUA_YIELD) { /* error? */ - lua_pushboolean(L, 0); /* first result (false) */ - lua_pushvalue(L, -2); /* error message */ - return 2; /* return false, msg */ - } - else - return lua_gettop(L) - (int)extra; /* return all results */ -} - - -static int luaB_pcall (lua_State *L) { - int status; - luaL_checkany(L, 1); - lua_pushboolean(L, 1); /* first result if no errors */ - lua_insert(L, 1); /* put it in place */ - status = lua_pcallk(L, lua_gettop(L) - 2, LUA_MULTRET, 0, 0, finishpcall); - return finishpcall(L, status, 0); -} - - -/* -** Do a protected call with error handling. After 'lua_rotate', the -** stack will have <f, err, true, f, [args...]>; so, the function passes -** 2 to 'finishpcall' to skip the 2 first values when returning results. -*/ -static int luaB_xpcall (lua_State *L) { - int status; - int n = lua_gettop(L); - luaL_checktype(L, 2, LUA_TFUNCTION); /* check error function */ - lua_pushboolean(L, 1); /* first result */ - lua_pushvalue(L, 1); /* function */ - lua_rotate(L, 3, 2); /* move them below function's arguments */ - status = lua_pcallk(L, n - 2, LUA_MULTRET, 2, 2, finishpcall); - return finishpcall(L, status, 2); -} - - -static int luaB_tostring (lua_State *L) { - luaL_checkany(L, 1); - luaL_tolstring(L, 1, NULL); - return 1; -} - - -static const luaL_Reg base_funcs[] = { - {"assert", luaB_assert}, - {"collectgarbage", luaB_collectgarbage}, - {"dofile", luaB_dofile}, - {"error", luaB_error}, - {"getmetatable", luaB_getmetatable}, - {"ipairs", luaB_ipairs}, - {"loadfile", luaB_loadfile}, - {"load", luaB_load}, -#if defined(LUA_COMPAT_LOADSTRING) - {"loadstring", luaB_load}, -#endif - {"next", luaB_next}, - {"pairs", luaB_pairs}, - {"pcall", luaB_pcall}, - {"print", luaB_print}, - {"rawequal", luaB_rawequal}, - {"rawlen", luaB_rawlen}, - {"rawget", luaB_rawget}, - {"rawset", luaB_rawset}, - {"select", luaB_select}, - {"setmetatable", luaB_setmetatable}, - {"tonumber", luaB_tonumber}, - {"tostring", luaB_tostring}, - {"type", luaB_type}, - {"xpcall", luaB_xpcall}, - /* placeholders */ - {"_G", NULL}, - {"_VERSION", NULL}, - {NULL, NULL} -}; - - -LUAMOD_API int luaopen_base (lua_State *L) { - /* open lib into global table */ - lua_pushglobaltable(L); - luaL_setfuncs(L, base_funcs, 0); - /* set global _G */ - lua_pushvalue(L, -1); - lua_setfield(L, -2, "_G"); - /* set global _VERSION */ - lua_pushliteral(L, LUA_VERSION); - lua_setfield(L, -2, "_VERSION"); - return 1; -} - |