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Diffstat (limited to 'libs/liblua/src/ldblib.c')
-rw-r--r--libs/liblua/src/ldblib.c73
1 files changed, 47 insertions, 26 deletions
diff --git a/libs/liblua/src/ldblib.c b/libs/liblua/src/ldblib.c
index 9d29afb0a8..59eb8f0ea7 100644
--- a/libs/liblua/src/ldblib.c
+++ b/libs/liblua/src/ldblib.c
@@ -1,5 +1,5 @@
/*
-** $Id: ldblib.c,v 1.151.1.1 2017/04/19 17:20:42 roberto Exp $
+** $Id: ldblib.c $
** Interface from Lua to its debug API
** See Copyright Notice in lua.h
*/
@@ -21,10 +21,10 @@
/*
-** The hook table at registry[&HOOKKEY] maps threads to their current
-** hook function. (We only need the unique address of 'HOOKKEY'.)
+** The hook table at registry[HOOKKEY] maps threads to their current
+** hook function.
*/
-static const int HOOKKEY = 0;
+static const char *const HOOKKEY = "_HOOKKEY";
/*
@@ -55,8 +55,7 @@ static int db_getmetatable (lua_State *L) {
static int db_setmetatable (lua_State *L) {
int t = lua_type(L, 2);
- luaL_argcheck(L, t == LUA_TNIL || t == LUA_TTABLE, 2,
- "nil or table expected");
+ luaL_argexpected(L, t == LUA_TNIL || t == LUA_TTABLE, 2, "nil or table");
lua_settop(L, 2);
lua_setmetatable(L, 1);
return 1; /* return 1st argument */
@@ -64,19 +63,24 @@ static int db_setmetatable (lua_State *L) {
static int db_getuservalue (lua_State *L) {
+ int n = (int)luaL_optinteger(L, 2, 1);
if (lua_type(L, 1) != LUA_TUSERDATA)
- lua_pushnil(L);
- else
- lua_getuservalue(L, 1);
+ luaL_pushfail(L);
+ else if (lua_getiuservalue(L, 1, n) != LUA_TNONE) {
+ lua_pushboolean(L, 1);
+ return 2;
+ }
return 1;
}
static int db_setuservalue (lua_State *L) {
+ int n = (int)luaL_optinteger(L, 3, 1);
luaL_checktype(L, 1, LUA_TUSERDATA);
luaL_checkany(L, 2);
lua_settop(L, 2);
- lua_setuservalue(L, 1);
+ if (!lua_setiuservalue(L, 1, n))
+ luaL_pushfail(L);
return 1;
}
@@ -146,7 +150,7 @@ 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, "flnStu");
+ const char *options = luaL_optstring(L, arg+2, "flnSrtu");
checkstack(L, L1, 3);
if (lua_isfunction(L, arg + 1)) { /* info about a function? */
options = lua_pushfstring(L, ">%s", options); /* add '>' to 'options' */
@@ -155,7 +159,7 @@ static int db_getinfo (lua_State *L) {
}
else { /* stack level */
if (!lua_getstack(L1, (int)luaL_checkinteger(L, arg + 1), &ar)) {
- lua_pushnil(L); /* level out of range */
+ luaL_pushfail(L); /* level out of range */
return 1;
}
}
@@ -163,7 +167,8 @@ static int db_getinfo (lua_State *L) {
return luaL_argerror(L, arg+2, "invalid option");
lua_newtable(L); /* table to collect results */
if (strchr(options, 'S')) {
- settabss(L, "source", ar.source);
+ lua_pushlstring(L, ar.source, ar.srclen);
+ lua_setfield(L, -2, "source");
settabss(L, "short_src", ar.short_src);
settabsi(L, "linedefined", ar.linedefined);
settabsi(L, "lastlinedefined", ar.lastlinedefined);
@@ -180,6 +185,10 @@ static int db_getinfo (lua_State *L) {
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'))
@@ -193,8 +202,6 @@ static int db_getinfo (lua_State *L) {
static int db_getlocal (lua_State *L) {
int arg;
lua_State *L1 = getthread(L, &arg);
- lua_Debug ar;
- const char *name;
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 */
@@ -202,6 +209,8 @@ static int db_getlocal (lua_State *L) {
return 1; /* return only name (there is no value) */
}
else { /* stack-level argument */
+ lua_Debug ar;
+ const char *name;
int level = (int)luaL_checkinteger(L, arg + 1);
if (!lua_getstack(L1, level, &ar)) /* out of range? */
return luaL_argerror(L, arg+1, "level out of range");
@@ -214,7 +223,7 @@ static int db_getlocal (lua_State *L) {
return 2;
}
else {
- lua_pushnil(L); /* no name (nor value) */
+ luaL_pushfail(L); /* no name (nor value) */
return 1;
}
}
@@ -305,7 +314,7 @@ static int db_upvaluejoin (lua_State *L) {
static void hookf (lua_State *L, lua_Debug *ar) {
static const char *const hooknames[] =
{"call", "return", "line", "count", "tail call"};
- lua_rawgetp(L, LUA_REGISTRYINDEX, &HOOKKEY);
+ 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 */
@@ -358,14 +367,12 @@ static int db_sethook (lua_State *L) {
count = (int)luaL_optinteger(L, arg + 3, 0);
func = hookf; mask = makemask(smask, count);
}
- if (lua_rawgetp(L, LUA_REGISTRYINDEX, &HOOKKEY) == LUA_TNIL) {
- lua_createtable(L, 0, 2); /* create a hook table */
- lua_pushvalue(L, -1);
- lua_rawsetp(L, LUA_REGISTRYINDEX, &HOOKKEY); /* set it in position */
+ if (!luaL_getsubtable(L, LUA_REGISTRYINDEX, HOOKKEY)) {
+ /* table just created; initialize it */
lua_pushstring(L, "k");
lua_setfield(L, -2, "__mode"); /** hooktable.__mode = "k" */
lua_pushvalue(L, -1);
- lua_setmetatable(L, -2); /* setmetatable(hooktable) = hooktable */
+ lua_setmetatable(L, -2); /* metatable(hooktable) = hooktable */
}
checkstack(L, L1, 1);
lua_pushthread(L1); lua_xmove(L1, L, 1); /* key (thread) */
@@ -382,12 +389,14 @@ 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? */
- lua_pushnil(L);
+ if (hook == NULL) { /* no hook? */
+ luaL_pushfail(L);
+ return 1;
+ }
else if (hook != hookf) /* external hook? */
lua_pushliteral(L, "external hook");
else { /* hook table must exist */
- lua_rawgetp(L, LUA_REGISTRYINDEX, &HOOKKEY);
+ 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] */
@@ -408,7 +417,7 @@ static int db_debug (lua_State *L) {
return 0;
if (luaL_loadbuffer(L, buffer, strlen(buffer), "=(debug command)") ||
lua_pcall(L, 0, 0, 0))
- lua_writestringerror("%s\n", lua_tostring(L, -1));
+ lua_writestringerror("%s\n", luaL_tolstring(L, -1, NULL));
lua_settop(L, 0); /* remove eventual returns */
}
}
@@ -428,6 +437,17 @@ static int db_traceback (lua_State *L) {
}
+static int db_setcstacklimit (lua_State *L) {
+ int limit = (int)luaL_checkinteger(L, 1);
+ int res = lua_setcstacklimit(L, limit);
+ if (res == 0)
+ lua_pushboolean(L, 0);
+ else
+ lua_pushinteger(L, res);
+ return 1;
+}
+
+
static const luaL_Reg dblib[] = {
{"debug", db_debug},
{"getuservalue", db_getuservalue},
@@ -445,6 +465,7 @@ static const luaL_Reg dblib[] = {
{"setmetatable", db_setmetatable},
{"setupvalue", db_setupvalue},
{"traceback", db_traceback},
+ {"setcstacklimit", db_setcstacklimit},
{NULL, NULL}
};
generated by cgit v1.2.3 (git 2.25.1) at 2025-06-04 00:47:12 +0000