summaryrefslogtreecommitdiff
path: root/Build/source/libs/luajit/LuaJIT-src/src/lib_debug.c
diff options
context:
space:
mode:
Diffstat (limited to 'Build/source/libs/luajit/LuaJIT-src/src/lib_debug.c')
-rw-r--r--Build/source/libs/luajit/LuaJIT-src/src/lib_debug.c405
1 files changed, 405 insertions, 0 deletions
diff --git a/Build/source/libs/luajit/LuaJIT-src/src/lib_debug.c b/Build/source/libs/luajit/LuaJIT-src/src/lib_debug.c
new file mode 100644
index 00000000000..b610fb4dcdd
--- /dev/null
+++ b/Build/source/libs/luajit/LuaJIT-src/src/lib_debug.c
@@ -0,0 +1,405 @@
+/*
+** Debug library.
+** Copyright (C) 2005-2015 Mike Pall. See Copyright Notice in luajit.h
+**
+** Major portions taken verbatim or adapted from the Lua interpreter.
+** Copyright (C) 1994-2008 Lua.org, PUC-Rio. See Copyright Notice in lua.h
+*/
+
+#define lib_debug_c
+#define LUA_LIB
+
+#include "lua.h"
+#include "lauxlib.h"
+#include "lualib.h"
+
+#include "lj_obj.h"
+#include "lj_gc.h"
+#include "lj_err.h"
+#include "lj_debug.h"
+#include "lj_lib.h"
+
+/* ------------------------------------------------------------------------ */
+
+#define LJLIB_MODULE_debug
+
+LJLIB_CF(debug_getregistry)
+{
+ copyTV(L, L->top++, registry(L));
+ return 1;
+}
+
+LJLIB_CF(debug_getmetatable) LJLIB_REC(.)
+{
+ lj_lib_checkany(L, 1);
+ if (!lua_getmetatable(L, 1)) {
+ setnilV(L->top-1);
+ }
+ return 1;
+}
+
+LJLIB_CF(debug_setmetatable)
+{
+ lj_lib_checktabornil(L, 2);
+ L->top = L->base+2;
+ lua_setmetatable(L, 1);
+#if !LJ_52
+ setboolV(L->top-1, 1);
+#endif
+ return 1;
+}
+
+LJLIB_CF(debug_getfenv)
+{
+ lj_lib_checkany(L, 1);
+ lua_getfenv(L, 1);
+ return 1;
+}
+
+LJLIB_CF(debug_setfenv)
+{
+ lj_lib_checktab(L, 2);
+ L->top = L->base+2;
+ if (!lua_setfenv(L, 1))
+ lj_err_caller(L, LJ_ERR_SETFENV);
+ 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 void settabsb(lua_State *L, const char *i, int v)
+{
+ lua_pushboolean(L, v);
+ lua_setfield(L, -2, i);
+}
+
+static lua_State *getthread(lua_State *L, int *arg)
+{
+ if (L->base < L->top && tvisthread(L->base)) {
+ *arg = 1;
+ return threadV(L->base);
+ } else {
+ *arg = 0;
+ return L;
+ }
+}
+
+static void treatstackoption(lua_State *L, lua_State *L1, const char *fname)
+{
+ if (L == L1) {
+ lua_pushvalue(L, -2);
+ lua_remove(L, -3);
+ }
+ else
+ lua_xmove(L1, L, 1);
+ lua_setfield(L, -2, fname);
+}
+
+LJLIB_CF(debug_getinfo)
+{
+ lj_Debug ar;
+ int arg, opt_f = 0, opt_L = 0;
+ lua_State *L1 = getthread(L, &arg);
+ 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), (lua_Debug *)&ar)) {
+ setnilV(L->top-1);
+ return 1;
+ }
+ } else if (L->base+arg < L->top && tvisfunc(L->base+arg)) {
+ options = lua_pushfstring(L, ">%s", options);
+ setfuncV(L1, L1->top++, funcV(L->base+arg));
+ } else {
+ lj_err_arg(L, arg+1, LJ_ERR_NOFUNCL);
+ }
+ if (!lj_debug_getinfo(L1, options, &ar, 1))
+ lj_err_arg(L, arg+2, LJ_ERR_INVOPT);
+ lua_createtable(L, 0, 16); /* Create result table. */
+ for (; *options; options++) {
+ switch (*options) {
+ case 'S':
+ settabss(L, "source", ar.source);
+ settabss(L, "short_src", ar.short_src);
+ settabsi(L, "linedefined", ar.linedefined);
+ settabsi(L, "lastlinedefined", ar.lastlinedefined);
+ settabss(L, "what", ar.what);
+ break;
+ case 'l':
+ settabsi(L, "currentline", ar.currentline);
+ break;
+ case 'u':
+ settabsi(L, "nups", ar.nups);
+ settabsi(L, "nparams", ar.nparams);
+ settabsb(L, "isvararg", ar.isvararg);
+ break;
+ case 'n':
+ settabss(L, "name", ar.name);
+ settabss(L, "namewhat", ar.namewhat);
+ break;
+ case 'f': opt_f = 1; break;
+ case 'L': opt_L = 1; break;
+ default: break;
+ }
+ }
+ if (opt_L) treatstackoption(L, L1, "activelines");
+ if (opt_f) treatstackoption(L, L1, "func");
+ return 1; /* Return result table. */
+}
+
+LJLIB_CF(debug_getlocal)
+{
+ int arg;
+ lua_State *L1 = getthread(L, &arg);
+ lua_Debug ar;
+ const char *name;
+ int slot = lj_lib_checkint(L, arg+2);
+ if (tvisfunc(L->base+arg)) {
+ L->top = L->base+arg+1;
+ lua_pushstring(L, lua_getlocal(L, NULL, slot));
+ return 1;
+ }
+ if (!lua_getstack(L1, lj_lib_checkint(L, arg+1), &ar))
+ lj_err_arg(L, arg+1, LJ_ERR_LVLRNG);
+ name = lua_getlocal(L1, &ar, slot);
+ if (name) {
+ lua_xmove(L1, L, 1);
+ lua_pushstring(L, name);
+ lua_pushvalue(L, -2);
+ return 2;
+ } else {
+ setnilV(L->top-1);
+ return 1;
+ }
+}
+
+LJLIB_CF(debug_setlocal)
+{
+ int arg;
+ lua_State *L1 = getthread(L, &arg);
+ lua_Debug ar;
+ TValue *tv;
+ if (!lua_getstack(L1, lj_lib_checkint(L, arg+1), &ar))
+ lj_err_arg(L, arg+1, LJ_ERR_LVLRNG);
+ tv = lj_lib_checkany(L, arg+3);
+ copyTV(L1, L1->top++, tv);
+ lua_pushstring(L, lua_setlocal(L1, &ar, lj_lib_checkint(L, arg+2)));
+ return 1;
+}
+
+static int debug_getupvalue(lua_State *L, int get)
+{
+ int32_t n = lj_lib_checkint(L, 2);
+ const char *name;
+ lj_lib_checkfunc(L, 1);
+ name = get ? lua_getupvalue(L, 1, n) : lua_setupvalue(L, 1, n);
+ if (name) {
+ lua_pushstring(L, name);
+ if (!get) return 1;
+ copyTV(L, L->top, L->top-2);
+ L->top++;
+ return 2;
+ }
+ return 0;
+}
+
+LJLIB_CF(debug_getupvalue)
+{
+ return debug_getupvalue(L, 1);
+}
+
+LJLIB_CF(debug_setupvalue)
+{
+ lj_lib_checkany(L, 3);
+ return debug_getupvalue(L, 0);
+}
+
+LJLIB_CF(debug_upvalueid)
+{
+ GCfunc *fn = lj_lib_checkfunc(L, 1);
+ int32_t n = lj_lib_checkint(L, 2) - 1;
+ if ((uint32_t)n >= fn->l.nupvalues)
+ lj_err_arg(L, 2, LJ_ERR_IDXRNG);
+ setlightudV(L->top-1, isluafunc(fn) ? (void *)gcref(fn->l.uvptr[n]) :
+ (void *)&fn->c.upvalue[n]);
+ return 1;
+}
+
+LJLIB_CF(debug_upvaluejoin)
+{
+ GCfunc *fn[2];
+ GCRef *p[2];
+ int i;
+ for (i = 0; i < 2; i++) {
+ int32_t n;
+ fn[i] = lj_lib_checkfunc(L, 2*i+1);
+ if (!isluafunc(fn[i]))
+ lj_err_arg(L, 2*i+1, LJ_ERR_NOLFUNC);
+ n = lj_lib_checkint(L, 2*i+2) - 1;
+ if ((uint32_t)n >= fn[i]->l.nupvalues)
+ lj_err_arg(L, 2*i+2, LJ_ERR_IDXRNG);
+ p[i] = &fn[i]->l.uvptr[n];
+ }
+ setgcrefr(*p[0], *p[1]);
+ lj_gc_objbarrier(L, fn[0], gcref(*p[1]));
+ return 0;
+}
+
+#if LJ_52
+LJLIB_CF(debug_getuservalue)
+{
+ TValue *o = L->base;
+ if (o < L->top && tvisudata(o))
+ settabV(L, o, tabref(udataV(o)->env));
+ else
+ setnilV(o);
+ L->top = o+1;
+ return 1;
+}
+
+LJLIB_CF(debug_setuservalue)
+{
+ TValue *o = L->base;
+ if (!(o < L->top && tvisudata(o)))
+ lj_err_argt(L, 1, LUA_TUSERDATA);
+ if (!(o+1 < L->top && tvistab(o+1)))
+ lj_err_argt(L, 2, LUA_TTABLE);
+ L->top = o+2;
+ lua_setfenv(L, 1);
+ return 1;
+}
+#endif
+
+/* ------------------------------------------------------------------------ */
+
+static const char KEY_HOOK = 'h';
+
+static void hookf(lua_State *L, lua_Debug *ar)
+{
+ static const char *const hooknames[] =
+ {"call", "return", "line", "count", "tail return"};
+ lua_pushlightuserdata(L, (void *)&KEY_HOOK);
+ lua_rawget(L, LUA_REGISTRYINDEX);
+ if (lua_isfunction(L, -1)) {
+ lua_pushstring(L, hooknames[(int)ar->event]);
+ if (ar->currentline >= 0)
+ lua_pushinteger(L, ar->currentline);
+ else lua_pushnil(L);
+ lua_call(L, 2, 0);
+ }
+}
+
+static int makemask(const char *smask, int count)
+{
+ int mask = 0;
+ if (strchr(smask, 'c')) mask |= LUA_MASKCALL;
+ if (strchr(smask, 'r')) mask |= LUA_MASKRET;
+ if (strchr(smask, 'l')) mask |= LUA_MASKLINE;
+ if (count > 0) mask |= LUA_MASKCOUNT;
+ return mask;
+}
+
+static char *unmakemask(int mask, char *smask)
+{
+ int i = 0;
+ if (mask & LUA_MASKCALL) smask[i++] = 'c';
+ if (mask & LUA_MASKRET) smask[i++] = 'r';
+ if (mask & LUA_MASKLINE) smask[i++] = 'l';
+ smask[i] = '\0';
+ return smask;
+}
+
+LJLIB_CF(debug_sethook)
+{
+ int arg, mask, count;
+ lua_Hook func;
+ (void)getthread(L, &arg);
+ 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 = luaL_optint(L, arg+3, 0);
+ func = hookf; mask = makemask(smask, count);
+ }
+ lua_pushlightuserdata(L, (void *)&KEY_HOOK);
+ lua_pushvalue(L, arg+1);
+ lua_rawset(L, LUA_REGISTRYINDEX);
+ lua_sethook(L, func, mask, count);
+ return 0;
+}
+
+LJLIB_CF(debug_gethook)
+{
+ char buff[5];
+ int mask = lua_gethookmask(L);
+ lua_Hook hook = lua_gethook(L);
+ if (hook != NULL && hook != hookf) { /* external hook? */
+ lua_pushliteral(L, "external hook");
+ } else {
+ lua_pushlightuserdata(L, (void *)&KEY_HOOK);
+ lua_rawget(L, LUA_REGISTRYINDEX); /* get hook */
+ }
+ lua_pushstring(L, unmakemask(mask, buff));
+ lua_pushinteger(L, lua_gethookcount(L));
+ return 3;
+}
+
+/* ------------------------------------------------------------------------ */
+
+LJLIB_CF(debug_debug)
+{
+ for (;;) {
+ char buffer[250];
+ 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)) {
+ fputs(lua_tostring(L, -1), stderr);
+ fputs("\n", stderr);
+ }
+ lua_settop(L, 0); /* remove eventual returns */
+ }
+}
+
+/* ------------------------------------------------------------------------ */
+
+#define LEVELS1 12 /* size of the first part of the stack */
+#define LEVELS2 10 /* size of the second part of the stack */
+
+LJLIB_CF(debug_traceback)
+{
+ int arg;
+ lua_State *L1 = getthread(L, &arg);
+ const char *msg = lua_tostring(L, arg+1);
+ if (msg == NULL && L->top > L->base+arg)
+ L->top = L->base+arg+1;
+ else
+ luaL_traceback(L, L1, msg, lj_lib_optint(L, arg+2, (L == L1)));
+ return 1;
+}
+
+/* ------------------------------------------------------------------------ */
+
+#include "lj_libdef.h"
+
+LUALIB_API int luaopen_debug(lua_State *L)
+{
+ LJ_LIB_REG(L, LUA_DBLIBNAME, debug);
+ return 1;
+}
+