mirror of
https://gitcode.com/JianFeeeee/LuaCangjia_api.git
synced 2026-09-22 09:58:10 +00:00
feat: 适配 Lua 5.2.4 (lua_5.2.4 分支)
- lib/lua 替换为 Lua 5.2.4 官方源码; CMakeLists 补 lbitlib.c(5.2 linit 注册 bit32)、删 lutf8lib.c(5.2 无此文件) - I/O 重定向机制改造: 5.2 无 lua_getextraspace → iopath 指针存入 Registry 固定索引(IOPATH_REG_IDX=1), 回调经 get_iopath() 取回, free_lua 时释放 —— 该方案同样适用于更低版本 - typed interop 版本自适应: capture_result() 的 lua_isinteger 分支用 #if LUA_VERSION_NUM >= 503 包裹, 5.2 及以下所有数字统一 CJT_NUM - 测试跨版本适配: PackagePathConfig 接受 require 的两种返回语义; typed 数值断言 EXPECT_INT_OR_NUM 宏兼容有无 integer 子类型; 大整数保真断言仅对 5.3+ 生效(5.2 经 double 必然丢精度) - 验证: GTest 44/44 通过
This commit is contained in:
JianFeeeee
363
lib/lua/lbaselib.c
Executable file → Normal file
363
lib/lua/lbaselib.c
Executable file → Normal file
@ -1,13 +1,9 @@
|
||||
/*
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||||
** $Id: lbaselib.c $
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||||
** $Id: lbaselib.c,v 1.276.1.1 2013/04/12 18:48:47 roberto Exp $
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||||
** Basic library
|
||||
** See Copyright Notice in lua.h
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||||
*/
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||||
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||||
#define lbaselib_c
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#define LUA_LIB
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||||
|
||||
#include "lprefix.h"
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|
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#include <ctype.h>
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@ -15,6 +11,9 @@
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||||
#include <stdlib.h>
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||||
#include <string.h>
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||||
#define lbaselib_c
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#define LUA_LIB
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#include "lua.h"
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#include "lauxlib.h"
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@ -24,98 +23,74 @@
|
||||
static int luaB_print (lua_State *L) {
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int n = lua_gettop(L); /* number of arguments */
|
||||
int i;
|
||||
for (i = 1; i <= n; i++) { /* for each argument */
|
||||
lua_getglobal(L, "tostring");
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for (i=1; i<=n; i++) {
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const char *s;
|
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size_t l;
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||||
const char *s = luaL_tolstring(L, i, &l); /* convert it to string */
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if (i > 1) /* not the first element? */
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lua_writestring("\t", 1); /* add a tab before it */
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lua_writestring(s, l); /* print it */
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lua_pushvalue(L, -1); /* function to be called */
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lua_pushvalue(L, i); /* value to print */
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lua_call(L, 1, 1);
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s = lua_tolstring(L, -1, &l); /* get result */
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if (s == NULL)
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return luaL_error(L,
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LUA_QL("tostring") " must return a string to " LUA_QL("print"));
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if (i>1) luai_writestring("\t", 1);
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luai_writestring(s, l);
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lua_pop(L, 1); /* pop result */
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}
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lua_writeline();
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return 0;
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}
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|
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|
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/*
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** Creates a warning with all given arguments.
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** Check first for errors; otherwise an error may interrupt
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** the composition of a warning, leaving it unfinished.
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*/
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static int luaB_warn (lua_State *L) {
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int n = lua_gettop(L); /* number of arguments */
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int i;
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luaL_checkstring(L, 1); /* at least one argument */
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for (i = 2; i <= n; i++)
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luaL_checkstring(L, i); /* make sure all arguments are strings */
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for (i = 1; i < n; i++) /* compose warning */
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lua_warning(L, lua_tostring(L, i), 1);
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lua_warning(L, lua_tostring(L, n), 0); /* close warning */
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luai_writeline();
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return 0;
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}
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#define SPACECHARS " \f\n\r\t\v"
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static const char *b_str2int (const char *s, int base, lua_Integer *pn) {
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lua_Unsigned n = 0;
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int neg = 0;
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s += strspn(s, SPACECHARS); /* skip initial spaces */
|
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if (*s == '-') { s++; neg = 1; } /* handle sign */
|
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else if (*s == '+') s++;
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if (!isalnum((unsigned char)*s)) /* no digit? */
|
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return NULL;
|
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do {
|
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int digit = (isdigit((unsigned char)*s)) ? *s - '0'
|
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: (toupper((unsigned char)*s) - 'A') + 10;
|
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if (digit >= base) return NULL; /* invalid numeral */
|
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n = n * base + digit;
|
||||
s++;
|
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} while (isalnum((unsigned char)*s));
|
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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? */
|
||||
if (lua_type(L, 1) == LUA_TNUMBER) { /* already a number? */
|
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lua_settop(L, 1); /* yes; return it */
|
||||
if (lua_isnoneornil(L, 2)) { /* standard conversion */
|
||||
int isnum;
|
||||
lua_Number n = lua_tonumberx(L, 1, &isnum);
|
||||
if (isnum) {
|
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lua_pushnumber(L, n);
|
||||
return 1;
|
||||
}
|
||||
else {
|
||||
size_t l;
|
||||
const char *s = lua_tolstring(L, 1, &l);
|
||||
if (s != NULL && lua_stringtonumber(L, s) == l + 1)
|
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return 1; /* successful conversion to number */
|
||||
/* else not a number */
|
||||
luaL_checkany(L, 1); /* (but there must be some parameter) */
|
||||
}
|
||||
} /* else not a number; must be something */
|
||||
luaL_checkany(L, 1);
|
||||
}
|
||||
else {
|
||||
size_t l;
|
||||
const char *s;
|
||||
lua_Integer n = 0; /* to avoid warnings */
|
||||
lua_Integer base = luaL_checkinteger(L, 2);
|
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luaL_checktype(L, 1, LUA_TSTRING); /* no numbers as strings */
|
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s = lua_tolstring(L, 1, &l);
|
||||
const char *s = luaL_checklstring(L, 1, &l);
|
||||
const char *e = s + l; /* end point for 's' */
|
||||
int base = luaL_checkint(L, 2);
|
||||
int neg = 0;
|
||||
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;
|
||||
s += strspn(s, SPACECHARS); /* skip initial spaces */
|
||||
if (*s == '-') { s++; neg = 1; } /* handle signal */
|
||||
else if (*s == '+') s++;
|
||||
if (isalnum((unsigned char)*s)) {
|
||||
lua_Number n = 0;
|
||||
do {
|
||||
int digit = (isdigit((unsigned char)*s)) ? *s - '0'
|
||||
: toupper((unsigned char)*s) - 'A' + 10;
|
||||
if (digit >= base) break; /* invalid numeral; force a fail */
|
||||
n = n * (lua_Number)base + (lua_Number)digit;
|
||||
s++;
|
||||
} while (isalnum((unsigned char)*s));
|
||||
s += strspn(s, SPACECHARS); /* skip trailing spaces */
|
||||
if (s == e) { /* no invalid trailing characters? */
|
||||
lua_pushnumber(L, (neg) ? -n : n);
|
||||
return 1;
|
||||
} /* else not a number */
|
||||
} /* else not a number */
|
||||
} /* else not a number */
|
||||
luaL_pushfail(L); /* 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);
|
||||
int level = luaL_optint(L, 2, 1);
|
||||
lua_settop(L, 1);
|
||||
if (lua_type(L, 1) == LUA_TSTRING && level > 0) {
|
||||
luaL_where(L, level); /* add extra information */
|
||||
if (lua_isstring(L, 1) && level > 0) { /* add extra information? */
|
||||
luaL_where(L, level);
|
||||
lua_pushvalue(L, 1);
|
||||
lua_concat(L, 2);
|
||||
}
|
||||
@ -137,8 +112,9 @@ static int luaB_getmetatable (lua_State *L) {
|
||||
static int luaB_setmetatable (lua_State *L) {
|
||||
int t = lua_type(L, 2);
|
||||
luaL_checktype(L, 1, LUA_TTABLE);
|
||||
luaL_argexpected(L, t == LUA_TNIL || t == LUA_TTABLE, 2, "nil or table");
|
||||
if (l_unlikely(luaL_getmetafield(L, 1, "__metatable") != LUA_TNIL))
|
||||
luaL_argcheck(L, t == LUA_TNIL || t == LUA_TTABLE, 2,
|
||||
"nil or table expected");
|
||||
if (luaL_getmetafield(L, 1, "__metatable"))
|
||||
return luaL_error(L, "cannot change a protected metatable");
|
||||
lua_settop(L, 2);
|
||||
lua_setmetatable(L, 1);
|
||||
@ -156,8 +132,8 @@ static int luaB_rawequal (lua_State *L) {
|
||||
|
||||
static int luaB_rawlen (lua_State *L) {
|
||||
int t = lua_type(L, 1);
|
||||
luaL_argexpected(L, t == LUA_TTABLE || t == LUA_TSTRING, 1,
|
||||
"table or string");
|
||||
luaL_argcheck(L, t == LUA_TTABLE || t == LUA_TSTRING, 1,
|
||||
"table or string expected");
|
||||
lua_pushinteger(L, lua_rawlen(L, 1));
|
||||
return 1;
|
||||
}
|
||||
@ -181,89 +157,59 @@ static int luaB_rawset (lua_State *L) {
|
||||
}
|
||||
|
||||
|
||||
static int pushmode (lua_State *L, int oldmode) {
|
||||
if (oldmode == -1)
|
||||
luaL_pushfail(L); /* invalid call to 'lua_gc' */
|
||||
else
|
||||
lua_pushstring(L, (oldmode == LUA_GCINC) ? "incremental"
|
||||
: "generational");
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** check whether call to 'lua_gc' was valid (not inside a finalizer)
|
||||
*/
|
||||
#define checkvalres(res) { if (res == -1) break; }
|
||||
|
||||
static int luaB_collectgarbage (lua_State *L) {
|
||||
static const char *const opts[] = {"stop", "restart", "collect",
|
||||
"count", "step", "setpause", "setstepmul",
|
||||
"isrunning", "generational", "incremental", NULL};
|
||||
"setmajorinc", "isrunning", "generational", "incremental", NULL};
|
||||
static const int optsnum[] = {LUA_GCSTOP, LUA_GCRESTART, LUA_GCCOLLECT,
|
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LUA_GCCOUNT, LUA_GCSTEP, LUA_GCSETPAUSE, LUA_GCSETSTEPMUL,
|
||||
LUA_GCISRUNNING, LUA_GCGEN, LUA_GCINC};
|
||||
LUA_GCSETMAJORINC, LUA_GCISRUNNING, LUA_GCGEN, LUA_GCINC};
|
||||
int o = optsnum[luaL_checkoption(L, 1, "collect", opts)];
|
||||
int ex = luaL_optint(L, 2, 0);
|
||||
int res = lua_gc(L, o, ex);
|
||||
switch (o) {
|
||||
case LUA_GCCOUNT: {
|
||||
int k = lua_gc(L, o);
|
||||
int b = lua_gc(L, LUA_GCCOUNTB);
|
||||
checkvalres(k);
|
||||
lua_pushnumber(L, (lua_Number)k + ((lua_Number)b/1024));
|
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return 1;
|
||||
int b = lua_gc(L, LUA_GCCOUNTB, 0);
|
||||
lua_pushnumber(L, res + ((lua_Number)b/1024));
|
||||
lua_pushinteger(L, b);
|
||||
return 2;
|
||||
}
|
||||
case LUA_GCSTEP: {
|
||||
int step = (int)luaL_optinteger(L, 2, 0);
|
||||
int res = lua_gc(L, o, step);
|
||||
checkvalres(res);
|
||||
case LUA_GCSTEP: case LUA_GCISRUNNING: {
|
||||
lua_pushboolean(L, res);
|
||||
return 1;
|
||||
}
|
||||
case LUA_GCSETPAUSE:
|
||||
case LUA_GCSETSTEPMUL: {
|
||||
int p = (int)luaL_optinteger(L, 2, 0);
|
||||
int previous = lua_gc(L, o, p);
|
||||
checkvalres(previous);
|
||||
lua_pushinteger(L, previous);
|
||||
return 1;
|
||||
}
|
||||
case LUA_GCISRUNNING: {
|
||||
int res = lua_gc(L, o);
|
||||
checkvalres(res);
|
||||
lua_pushboolean(L, res);
|
||||
return 1;
|
||||
}
|
||||
case LUA_GCGEN: {
|
||||
int minormul = (int)luaL_optinteger(L, 2, 0);
|
||||
int majormul = (int)luaL_optinteger(L, 3, 0);
|
||||
return pushmode(L, lua_gc(L, o, minormul, majormul));
|
||||
}
|
||||
case LUA_GCINC: {
|
||||
int pause = (int)luaL_optinteger(L, 2, 0);
|
||||
int stepmul = (int)luaL_optinteger(L, 3, 0);
|
||||
int stepsize = (int)luaL_optinteger(L, 4, 0);
|
||||
return pushmode(L, lua_gc(L, o, pause, stepmul, stepsize));
|
||||
}
|
||||
default: {
|
||||
int res = lua_gc(L, o);
|
||||
checkvalres(res);
|
||||
lua_pushinteger(L, res);
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
luaL_pushfail(L); /* invalid call (inside a finalizer) */
|
||||
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));
|
||||
luaL_checkany(L, 1);
|
||||
lua_pushstring(L, luaL_typename(L, 1));
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int pairsmeta (lua_State *L, const char *method, int iszero,
|
||||
lua_CFunction iter) {
|
||||
if (!luaL_getmetafield(L, 1, method)) { /* no metamethod? */
|
||||
luaL_checktype(L, 1, LUA_TTABLE); /* argument must be a table */
|
||||
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 */
|
||||
@ -276,52 +222,28 @@ static int luaB_next (lua_State *L) {
|
||||
}
|
||||
|
||||
|
||||
static int pairscont (lua_State *L, int status, lua_KContext k) {
|
||||
(void)L; (void)status; (void)k; /* unused */
|
||||
return 3;
|
||||
}
|
||||
|
||||
static int luaB_pairs (lua_State *L) {
|
||||
luaL_checkany(L, 1);
|
||||
if (luaL_getmetafield(L, 1, "__pairs") == LUA_TNIL) { /* no metamethod? */
|
||||
lua_pushcfunction(L, luaB_next); /* will return generator, */
|
||||
lua_pushvalue(L, 1); /* state, */
|
||||
lua_pushnil(L); /* and initial value */
|
||||
}
|
||||
else {
|
||||
lua_pushvalue(L, 1); /* argument 'self' to metamethod */
|
||||
lua_callk(L, 1, 3, 0, pairscont); /* get 3 values from metamethod */
|
||||
}
|
||||
return 3;
|
||||
return pairsmeta(L, "__pairs", 0, luaB_next);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Traversal function for 'ipairs'
|
||||
*/
|
||||
static int ipairsaux (lua_State *L) {
|
||||
lua_Integer i = luaL_checkinteger(L, 2);
|
||||
i = luaL_intop(+, i, 1);
|
||||
int i = luaL_checkint(L, 2);
|
||||
luaL_checktype(L, 1, LUA_TTABLE);
|
||||
i++; /* next value */
|
||||
lua_pushinteger(L, i);
|
||||
return (lua_geti(L, 1, i) == LUA_TNIL) ? 1 : 2;
|
||||
lua_rawgeti(L, 1, i);
|
||||
return (lua_isnil(L, -1)) ? 1 : 2;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** 'ipairs' function. Returns 'ipairsaux', given "table", 0.
|
||||
** (The given "table" may not be a table.)
|
||||
*/
|
||||
static int luaB_ipairs (lua_State *L) {
|
||||
luaL_checkany(L, 1);
|
||||
lua_pushcfunction(L, ipairsaux); /* iteration function */
|
||||
lua_pushvalue(L, 1); /* state */
|
||||
lua_pushinteger(L, 0); /* initial value */
|
||||
return 3;
|
||||
return pairsmeta(L, "__ipairs", 1, ipairsaux);
|
||||
}
|
||||
|
||||
|
||||
static int load_aux (lua_State *L, int status, int envidx) {
|
||||
if (l_likely(status == LUA_OK)) {
|
||||
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 */
|
||||
@ -330,9 +252,9 @@ static int load_aux (lua_State *L, int status, int envidx) {
|
||||
return 1;
|
||||
}
|
||||
else { /* error (message is on top of the stack) */
|
||||
luaL_pushfail(L);
|
||||
lua_pushnil(L);
|
||||
lua_insert(L, -2); /* put before error message */
|
||||
return 2; /* return fail plus error message */
|
||||
return 2; /* return nil plus error message */
|
||||
}
|
||||
}
|
||||
|
||||
@ -362,7 +284,7 @@ static int luaB_loadfile (lua_State *L) {
|
||||
|
||||
|
||||
/*
|
||||
** Reader for generic 'load' function: 'lua_load' uses the
|
||||
** 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.
|
||||
@ -377,7 +299,7 @@ static const char *generic_reader (lua_State *L, void *ud, size_t *size) {
|
||||
*size = 0;
|
||||
return NULL;
|
||||
}
|
||||
else if (l_unlikely(!lua_isstring(L, -1)))
|
||||
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);
|
||||
@ -406,8 +328,7 @@ static int luaB_load (lua_State *L) {
|
||||
/* }====================================================== */
|
||||
|
||||
|
||||
static int dofilecont (lua_State *L, int d1, lua_KContext d2) {
|
||||
(void)d1; (void)d2; /* only to match 'lua_Kfunction' prototype */
|
||||
static int dofilecont (lua_State *L) {
|
||||
return lua_gettop(L) - 1;
|
||||
}
|
||||
|
||||
@ -415,23 +336,17 @@ static int dofilecont (lua_State *L, int d1, lua_KContext d2) {
|
||||
static int luaB_dofile (lua_State *L) {
|
||||
const char *fname = luaL_optstring(L, 1, NULL);
|
||||
lua_settop(L, 1);
|
||||
if (l_unlikely(luaL_loadfile(L, fname) != LUA_OK))
|
||||
if (luaL_loadfile(L, fname) != LUA_OK)
|
||||
return lua_error(L);
|
||||
lua_callk(L, 0, LUA_MULTRET, 0, dofilecont);
|
||||
return dofilecont(L, 0, 0);
|
||||
return dofilecont(L);
|
||||
}
|
||||
|
||||
|
||||
static int luaB_assert (lua_State *L) {
|
||||
if (l_likely(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' */
|
||||
}
|
||||
if (!lua_toboolean(L, 1))
|
||||
return luaL_error(L, "%s", luaL_optstring(L, 2, "assertion failed!"));
|
||||
return lua_gettop(L);
|
||||
}
|
||||
|
||||
|
||||
@ -442,57 +357,53 @@ static int luaB_select (lua_State *L) {
|
||||
return 1;
|
||||
}
|
||||
else {
|
||||
lua_Integer i = luaL_checkinteger(L, 1);
|
||||
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 - (int)i;
|
||||
return n - 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 (l_unlikely(status != LUA_OK && status != LUA_YIELD)) { /* error? */
|
||||
lua_pushboolean(L, 0); /* first result (false) */
|
||||
lua_pushvalue(L, -2); /* error message */
|
||||
static int finishpcall (lua_State *L, int status) {
|
||||
if (!lua_checkstack(L, 1)) { /* no space for extra boolean? */
|
||||
lua_settop(L, 0); /* create space for return values */
|
||||
lua_pushboolean(L, 0);
|
||||
lua_pushstring(L, "stack overflow");
|
||||
return 2; /* return false, msg */
|
||||
}
|
||||
else
|
||||
return lua_gettop(L) - (int)extra; /* return all results */
|
||||
lua_pushboolean(L, status); /* first result (status) */
|
||||
lua_replace(L, 1); /* put first result in first slot */
|
||||
return lua_gettop(L);
|
||||
}
|
||||
|
||||
|
||||
static int pcallcont (lua_State *L) {
|
||||
int status = lua_getctx(L, NULL);
|
||||
return finishpcall(L, (status == LUA_YIELD));
|
||||
}
|
||||
|
||||
|
||||
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);
|
||||
lua_pushnil(L);
|
||||
lua_insert(L, 1); /* create space for status result */
|
||||
status = lua_pcallk(L, lua_gettop(L) - 2, LUA_MULTRET, 0, 0, pcallcont);
|
||||
return finishpcall(L, (status == LUA_OK));
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** 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);
|
||||
luaL_argcheck(L, n >= 2, 2, "value expected");
|
||||
lua_pushvalue(L, 1); /* exchange function... */
|
||||
lua_copy(L, 2, 1); /* ...and error handler */
|
||||
lua_replace(L, 2);
|
||||
status = lua_pcallk(L, n - 2, LUA_MULTRET, 1, 0, pcallcont);
|
||||
return finishpcall(L, (status == LUA_OK));
|
||||
}
|
||||
|
||||
|
||||
@ -512,11 +423,13 @@ static const luaL_Reg base_funcs[] = {
|
||||
{"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},
|
||||
{"warn", luaB_warn},
|
||||
{"rawequal", luaB_rawequal},
|
||||
{"rawlen", luaB_rawlen},
|
||||
{"rawget", luaB_rawget},
|
||||
@ -527,23 +440,19 @@ static const luaL_Reg base_funcs[] = {
|
||||
{"tostring", luaB_tostring},
|
||||
{"type", luaB_type},
|
||||
{"xpcall", luaB_xpcall},
|
||||
/* placeholders */
|
||||
{LUA_GNAME, 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, LUA_GNAME);
|
||||
/* set global _VERSION */
|
||||
lua_pushglobaltable(L);
|
||||
lua_pushglobaltable(L);
|
||||
lua_setfield(L, -2, "_G");
|
||||
/* open lib into global table */
|
||||
luaL_setfuncs(L, base_funcs, 0);
|
||||
lua_pushliteral(L, LUA_VERSION);
|
||||
lua_setfield(L, -2, "_VERSION");
|
||||
lua_setfield(L, -2, "_VERSION"); /* set global _VERSION */
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
Reference in New Issue
Block a user