mirror of
https://gitcode.com/JianFeeeee/LuaCangjia_api.git
synced 2026-09-20 17:08:12 +00:00
feat: 适配 Lua 5.1.5 (lua_5.1.5 分支)
- lib/lua 替换为 Lua 5.1.5 官方源码; CMakeLists 删除 5.1 不存在的 lcorolib.c/lctype.c/lutf8lib.c/lbitlib.c - 补充 lua.hpp C++ 包装头(5.1 官方不提供, 保持桥接 include 路径不变) - LUA_OK 兼容宏: 5.1 无此定义(成功返回值为 0) - luaL_tolstring 兼容: 5.1 无此 API, l_print 改用 lua_tostring + lua_typename 兜底(#if LUA_VERSION_NUM >= 502 条件编译, 弹栈逻辑同步分支) - luaL_setfuncs 兼容: 5.1 无此 API, push_tty_file 改手动循环注册 - I/O 重定向沿用 Registry 方案(自 5.2.4 分支同步), typed interop 版本自适应断言同步 - 验证: GTest 44/44 通过
This commit is contained in:
JianFeeeee
431
lib/lua/ldblib.c
Executable file → Normal file
431
lib/lua/ldblib.c
Executable file → Normal file
@ -1,42 +1,23 @@
|
||||
/*
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||||
** $Id: ldblib.c $
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||||
** $Id: ldblib.c,v 1.104.1.4 2009/08/04 18:50:18 roberto Exp $
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||||
** Interface from Lua to its debug API
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||||
** See Copyright Notice in lua.h
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||||
*/
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||||
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||||
#define ldblib_c
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||||
#define LUA_LIB
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||||
|
||||
#include "lprefix.h"
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||||
|
||||
|
||||
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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||||
|
||||
#define ldblib_c
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#define LUA_LIB
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||||
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#include "lua.h"
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||||
#include "lauxlib.h"
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#include "lualib.h"
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||||
|
||||
|
||||
/*
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||||
** The hook table at registry[HOOKKEY] maps threads to their current
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||||
** hook function.
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||||
*/
|
||||
static const char *const HOOKKEY = "_HOOKKEY";
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||||
|
||||
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||||
/*
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||||
** If L1 != L, L1 can be in any state, and therefore there are no
|
||||
** guarantees about its stack space; any push in L1 must be
|
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** checked.
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||||
*/
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||||
static void checkstack (lua_State *L, lua_State *L1, int n) {
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if (l_unlikely(L != L1 && !lua_checkstack(L1, n)))
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luaL_error(L, "stack overflow");
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}
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static int db_getregistry (lua_State *L) {
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lua_pushvalue(L, LUA_REGISTRYINDEX);
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@ -55,42 +36,43 @@ static int db_getmetatable (lua_State *L) {
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static int db_setmetatable (lua_State *L) {
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int t = lua_type(L, 2);
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luaL_argexpected(L, t == LUA_TNIL || t == LUA_TTABLE, 2, "nil or table");
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luaL_argcheck(L, t == LUA_TNIL || t == LUA_TTABLE, 2,
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"nil or table expected");
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lua_settop(L, 2);
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lua_setmetatable(L, 1);
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return 1; /* return 1st argument */
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}
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||||
static int db_getuservalue (lua_State *L) {
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int n = (int)luaL_optinteger(L, 2, 1);
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if (lua_type(L, 1) != LUA_TUSERDATA)
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luaL_pushfail(L);
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else if (lua_getiuservalue(L, 1, n) != LUA_TNONE) {
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lua_pushboolean(L, 1);
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return 2;
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}
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lua_pushboolean(L, lua_setmetatable(L, 1));
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return 1;
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}
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|
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static int db_setuservalue (lua_State *L) {
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int n = (int)luaL_optinteger(L, 3, 1);
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luaL_checktype(L, 1, LUA_TUSERDATA);
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luaL_checkany(L, 2);
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lua_settop(L, 2);
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if (!lua_setiuservalue(L, 1, n))
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luaL_pushfail(L);
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static int db_getfenv (lua_State *L) {
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luaL_checkany(L, 1);
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lua_getfenv(L, 1);
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return 1;
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}
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|
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|
||||
/*
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** Auxiliary function used by several library functions: check for
|
||||
** an optional thread as function's first argument and set 'arg' with
|
||||
** 1 if this argument is present (so that functions can skip it to
|
||||
** access their other arguments)
|
||||
*/
|
||||
static int db_setfenv (lua_State *L) {
|
||||
luaL_checktype(L, 2, LUA_TTABLE);
|
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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;
|
||||
@ -98,78 +80,46 @@ static lua_State *getthread (lua_State *L, int *arg) {
|
||||
}
|
||||
else {
|
||||
*arg = 0;
|
||||
return L; /* function will operate over current thread */
|
||||
return L;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Variations of 'lua_settable', used by 'db_getinfo' to put results
|
||||
** from 'lua_getinfo' into result table. Key is always a string;
|
||||
** value can be a string, an int, or a boolean.
|
||||
*/
|
||||
static void settabss (lua_State *L, const char *k, const char *v) {
|
||||
lua_pushstring(L, v);
|
||||
lua_setfield(L, -2, k);
|
||||
}
|
||||
|
||||
static void settabsi (lua_State *L, const char *k, int v) {
|
||||
lua_pushinteger(L, v);
|
||||
lua_setfield(L, -2, k);
|
||||
}
|
||||
|
||||
static void settabsb (lua_State *L, const char *k, int v) {
|
||||
lua_pushboolean(L, v);
|
||||
lua_setfield(L, -2, k);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** In function 'db_getinfo', the call to 'lua_getinfo' may push
|
||||
** results on the stack; later it creates the result table to put
|
||||
** these objects. Function 'treatstackoption' puts the result from
|
||||
** 'lua_getinfo' on top of the result table so that it can call
|
||||
** 'lua_setfield'.
|
||||
*/
|
||||
static void treatstackoption (lua_State *L, lua_State *L1, const char *fname) {
|
||||
if (L == L1)
|
||||
lua_rotate(L, -2, 1); /* exchange object and table */
|
||||
if (L == L1) {
|
||||
lua_pushvalue(L, -2);
|
||||
lua_remove(L, -3);
|
||||
}
|
||||
else
|
||||
lua_xmove(L1, L, 1); /* move object to the "main" stack */
|
||||
lua_setfield(L, -2, fname); /* put object into table */
|
||||
lua_xmove(L1, L, 1);
|
||||
lua_setfield(L, -2, fname);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Calls 'lua_getinfo' and collects all results in a new table.
|
||||
** L1 needs stack space for an optional input (function) plus
|
||||
** two optional outputs (function and line table) from function
|
||||
** 'lua_getinfo'.
|
||||
*/
|
||||
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, "flnSrtu");
|
||||
checkstack(L, L1, 3);
|
||||
luaL_argcheck(L, options[0] != '>', arg + 2, "invalid option '>'");
|
||||
if (lua_isfunction(L, arg + 1)) { /* info about a function? */
|
||||
options = lua_pushfstring(L, ">%s", options); /* add '>' to 'options' */
|
||||
lua_pushvalue(L, arg + 1); /* move function to 'L1' stack */
|
||||
lua_xmove(L, L1, 1);
|
||||
}
|
||||
else { /* stack level */
|
||||
if (!lua_getstack(L1, (int)luaL_checkinteger(L, arg + 1), &ar)) {
|
||||
luaL_pushfail(L); /* level out of range */
|
||||
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_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_newtable(L); /* table to collect results */
|
||||
lua_createtable(L, 0, 2);
|
||||
if (strchr(options, 'S')) {
|
||||
lua_pushlstring(L, ar.source, ar.srclen);
|
||||
lua_setfield(L, -2, "source");
|
||||
settabss(L, "source", ar.source);
|
||||
settabss(L, "short_src", ar.short_src);
|
||||
settabsi(L, "linedefined", ar.linedefined);
|
||||
settabsi(L, "lastlinedefined", ar.lastlinedefined);
|
||||
@ -177,92 +127,64 @@ static int db_getinfo (lua_State *L) {
|
||||
}
|
||||
if (strchr(options, 'l'))
|
||||
settabsi(L, "currentline", ar.currentline);
|
||||
if (strchr(options, 'u')) {
|
||||
if (strchr(options, 'u'))
|
||||
settabsi(L, "nups", ar.nups);
|
||||
settabsi(L, "nparams", ar.nparams);
|
||||
settabsb(L, "isvararg", ar.isvararg);
|
||||
}
|
||||
if (strchr(options, 'n')) {
|
||||
settabss(L, "name", ar.name);
|
||||
settabss(L, "namewhat", ar.namewhat);
|
||||
}
|
||||
if (strchr(options, 'r')) {
|
||||
settabsi(L, "ftransfer", ar.ftransfer);
|
||||
settabsi(L, "ntransfer", ar.ntransfer);
|
||||
}
|
||||
if (strchr(options, 't'))
|
||||
settabsb(L, "istailcall", ar.istailcall);
|
||||
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);
|
||||
int nvar = (int)luaL_checkinteger(L, arg + 2); /* local-variable index */
|
||||
if (lua_isfunction(L, arg + 1)) { /* function argument? */
|
||||
lua_pushvalue(L, arg + 1); /* push function */
|
||||
lua_pushstring(L, lua_getlocal(L, NULL, nvar)); /* push local name */
|
||||
return 1; /* return only name (there is no value) */
|
||||
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 { /* stack-level argument */
|
||||
lua_Debug ar;
|
||||
const char *name;
|
||||
int level = (int)luaL_checkinteger(L, arg + 1);
|
||||
if (l_unlikely(!lua_getstack(L1, level, &ar))) /* out of range? */
|
||||
return luaL_argerror(L, arg+1, "level out of range");
|
||||
checkstack(L, L1, 1);
|
||||
name = lua_getlocal(L1, &ar, nvar);
|
||||
if (name) {
|
||||
lua_xmove(L1, L, 1); /* move local value */
|
||||
lua_pushstring(L, name); /* push name */
|
||||
lua_rotate(L, -2, 1); /* re-order */
|
||||
return 2;
|
||||
}
|
||||
else {
|
||||
luaL_pushfail(L); /* no name (nor value) */
|
||||
return 1;
|
||||
}
|
||||
else {
|
||||
lua_pushnil(L);
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static int db_setlocal (lua_State *L) {
|
||||
int arg;
|
||||
const char *name;
|
||||
lua_State *L1 = getthread(L, &arg);
|
||||
lua_Debug ar;
|
||||
int level = (int)luaL_checkinteger(L, arg + 1);
|
||||
int nvar = (int)luaL_checkinteger(L, arg + 2);
|
||||
if (l_unlikely(!lua_getstack(L1, level, &ar))) /* out of range? */
|
||||
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);
|
||||
checkstack(L, L1, 1);
|
||||
lua_xmove(L, L1, 1);
|
||||
name = lua_setlocal(L1, &ar, nvar);
|
||||
if (name == NULL)
|
||||
lua_pop(L1, 1); /* pop value (if not popped by 'lua_setlocal') */
|
||||
lua_pushstring(L, name);
|
||||
lua_pushstring(L, lua_setlocal(L1, &ar, luaL_checkint(L, arg+2)));
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** get (if 'get' is true) or set an upvalue from a closure
|
||||
*/
|
||||
static int auxupvalue (lua_State *L, int get) {
|
||||
const char *name;
|
||||
int n = (int)luaL_checkinteger(L, 2); /* upvalue index */
|
||||
luaL_checktype(L, 1, LUA_TFUNCTION); /* closure */
|
||||
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)); /* no-op if get is false */
|
||||
lua_insert(L, -(get+1));
|
||||
return get + 1;
|
||||
}
|
||||
|
||||
@ -278,67 +200,28 @@ static int db_setupvalue (lua_State *L) {
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Check whether a given upvalue from a given closure exists and
|
||||
** returns its index
|
||||
*/
|
||||
static void *checkupval (lua_State *L, int argf, int argnup, int *pnup) {
|
||||
void *id;
|
||||
int nup = (int)luaL_checkinteger(L, argnup); /* upvalue index */
|
||||
luaL_checktype(L, argf, LUA_TFUNCTION); /* closure */
|
||||
id = lua_upvalueid(L, argf, nup);
|
||||
if (pnup) {
|
||||
luaL_argcheck(L, id != NULL, argnup, "invalid upvalue index");
|
||||
*pnup = nup;
|
||||
}
|
||||
return id;
|
||||
}
|
||||
|
||||
static const char KEY_HOOK = 'h';
|
||||
|
||||
|
||||
static int db_upvalueid (lua_State *L) {
|
||||
void *id = checkupval(L, 1, 2, NULL);
|
||||
if (id != NULL)
|
||||
lua_pushlightuserdata(L, id);
|
||||
else
|
||||
luaL_pushfail(L);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int db_upvaluejoin (lua_State *L) {
|
||||
int n1, n2;
|
||||
checkupval(L, 1, 2, &n1);
|
||||
checkupval(L, 3, 4, &n2);
|
||||
luaL_argcheck(L, !lua_iscfunction(L, 1), 1, "Lua function expected");
|
||||
luaL_argcheck(L, !lua_iscfunction(L, 3), 3, "Lua function expected");
|
||||
lua_upvaluejoin(L, 1, n1, 3, n2);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Call hook function registered at hook table for the current
|
||||
** thread (if there is one)
|
||||
*/
|
||||
static void hookf (lua_State *L, lua_Debug *ar) {
|
||||
static const char *const hooknames[] =
|
||||
{"call", "return", "line", "count", "tail call"};
|
||||
lua_getfield(L, LUA_REGISTRYINDEX, HOOKKEY);
|
||||
lua_pushthread(L);
|
||||
if (lua_rawget(L, -2) == LUA_TFUNCTION) { /* is there a hook function? */
|
||||
lua_pushstring(L, hooknames[(int)ar->event]); /* push event name */
|
||||
{"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); /* push current line */
|
||||
lua_pushinteger(L, ar->currentline);
|
||||
else lua_pushnil(L);
|
||||
lua_assert(lua_getinfo(L, "lS", ar));
|
||||
lua_call(L, 2, 0); /* call hook function */
|
||||
lua_call(L, 2, 0);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Convert a string mask (for 'sethook') into a bit mask
|
||||
*/
|
||||
static int makemask (const char *smask, int count) {
|
||||
int mask = 0;
|
||||
if (strchr(smask, 'c')) mask |= LUA_MASKCALL;
|
||||
@ -349,9 +232,6 @@ static int makemask (const char *smask, int count) {
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Convert a bit mask (for 'gethook') into a string mask
|
||||
*/
|
||||
static char *unmakemask (int mask, char *smask) {
|
||||
int i = 0;
|
||||
if (mask & LUA_MASKCALL) smask[i++] = 'c';
|
||||
@ -362,32 +242,39 @@ static char *unmakemask (int mask, char *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)) { /* no hook? */
|
||||
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_checktype(L, arg+1, LUA_TFUNCTION);
|
||||
count = (int)luaL_optinteger(L, arg + 3, 0);
|
||||
count = luaL_optint(L, arg+3, 0);
|
||||
func = hookf; mask = makemask(smask, count);
|
||||
}
|
||||
if (!luaL_getsubtable(L, LUA_REGISTRYINDEX, HOOKKEY)) {
|
||||
/* table just created; initialize it */
|
||||
lua_pushliteral(L, "k");
|
||||
lua_setfield(L, -2, "__mode"); /** hooktable.__mode = "k" */
|
||||
lua_pushvalue(L, -1);
|
||||
lua_setmetatable(L, -2); /* metatable(hooktable) = hooktable */
|
||||
}
|
||||
checkstack(L, L1, 1);
|
||||
lua_pushthread(L1); lua_xmove(L1, L, 1); /* key (thread) */
|
||||
lua_pushvalue(L, arg + 1); /* value (hook function) */
|
||||
lua_rawset(L, -3); /* hooktable[L1] = new Lua hook */
|
||||
lua_sethook(L1, func, mask, 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;
|
||||
}
|
||||
|
||||
@ -398,21 +285,16 @@ static int db_gethook (lua_State *L) {
|
||||
char buff[5];
|
||||
int mask = lua_gethookmask(L1);
|
||||
lua_Hook hook = lua_gethook(L1);
|
||||
if (hook == NULL) { /* no hook? */
|
||||
luaL_pushfail(L);
|
||||
return 1;
|
||||
}
|
||||
else if (hook != hookf) /* external hook? */
|
||||
if (hook != NULL && hook != hookf) /* external hook? */
|
||||
lua_pushliteral(L, "external hook");
|
||||
else { /* hook table must exist */
|
||||
lua_getfield(L, LUA_REGISTRYINDEX, HOOKKEY);
|
||||
checkstack(L, L1, 1);
|
||||
lua_pushthread(L1); lua_xmove(L1, L, 1);
|
||||
lua_rawget(L, -2); /* 1st result = hooktable[L1] */
|
||||
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)); /* 2nd result = mask */
|
||||
lua_pushinteger(L, lua_gethookcount(L1)); /* 3rd result = count */
|
||||
lua_pushstring(L, unmakemask(mask, buff));
|
||||
lua_pushinteger(L, lua_gethookcount(L1));
|
||||
return 3;
|
||||
}
|
||||
|
||||
@ -420,64 +302,97 @@ static int db_gethook (lua_State *L) {
|
||||
static int db_debug (lua_State *L) {
|
||||
for (;;) {
|
||||
char buffer[250];
|
||||
lua_writestringerror("%s", "lua_debug> ");
|
||||
if (fgets(buffer, sizeof(buffer), stdin) == NULL ||
|
||||
fputs("lua_debug> ", stderr);
|
||||
if (fgets(buffer, sizeof(buffer), stdin) == 0 ||
|
||||
strcmp(buffer, "cont\n") == 0)
|
||||
return 0;
|
||||
if (luaL_loadbuffer(L, buffer, strlen(buffer), "=(debug command)") ||
|
||||
lua_pcall(L, 0, 0, 0))
|
||||
lua_writestringerror("%s\n", luaL_tolstring(L, -1, NULL));
|
||||
lua_pcall(L, 0, 0, 0)) {
|
||||
fputs(lua_tostring(L, -1), stderr);
|
||||
fputs("\n", stderr);
|
||||
}
|
||||
lua_settop(L, 0); /* remove eventual returns */
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static int db_traceback (lua_State *L) {
|
||||
#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);
|
||||
const char *msg = lua_tostring(L, arg + 1);
|
||||
if (msg == NULL && !lua_isnoneornil(L, arg + 1)) /* non-string 'msg'? */
|
||||
lua_pushvalue(L, arg + 1); /* return it untouched */
|
||||
else {
|
||||
int level = (int)luaL_optinteger(L, arg + 2, (L == L1) ? 1 : 0);
|
||||
luaL_traceback(L, L1, msg, level);
|
||||
lua_Debug ar;
|
||||
if (lua_isnumber(L, arg+2)) {
|
||||
level = (int)lua_tointeger(L, arg+2);
|
||||
lua_pop(L, 1);
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int db_setcstacklimit (lua_State *L) {
|
||||
int limit = (int)luaL_checkinteger(L, 1);
|
||||
int res = lua_setcstacklimit(L, limit);
|
||||
lua_pushinteger(L, res);
|
||||
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;
|
||||
}
|
||||
|
||||
|
||||
static const luaL_Reg dblib[] = {
|
||||
{"debug", db_debug},
|
||||
{"getuservalue", db_getuservalue},
|
||||
{"getfenv", db_getfenv},
|
||||
{"gethook", db_gethook},
|
||||
{"getinfo", db_getinfo},
|
||||
{"getlocal", db_getlocal},
|
||||
{"getregistry", db_getregistry},
|
||||
{"getmetatable", db_getmetatable},
|
||||
{"getupvalue", db_getupvalue},
|
||||
{"upvaluejoin", db_upvaluejoin},
|
||||
{"upvalueid", db_upvalueid},
|
||||
{"setuservalue", db_setuservalue},
|
||||
{"setfenv", db_setfenv},
|
||||
{"sethook", db_sethook},
|
||||
{"setlocal", db_setlocal},
|
||||
{"setmetatable", db_setmetatable},
|
||||
{"setupvalue", db_setupvalue},
|
||||
{"traceback", db_traceback},
|
||||
{"setcstacklimit", db_setcstacklimit},
|
||||
{"traceback", db_errorfb},
|
||||
{NULL, NULL}
|
||||
};
|
||||
|
||||
|
||||
LUAMOD_API int luaopen_debug (lua_State *L) {
|
||||
luaL_newlib(L, dblib);
|
||||
LUALIB_API int luaopen_debug (lua_State *L) {
|
||||
luaL_register(L, LUA_DBLIBNAME, dblib);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
Reference in New Issue
Block a user