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Diffstat (limited to '3rdparty/lua/src/ldblib.c')
-rw-r--r--3rdparty/lua/src/ldblib.c456
1 files changed, 0 insertions, 456 deletions
diff --git a/3rdparty/lua/src/ldblib.c b/3rdparty/lua/src/ldblib.c
deleted file mode 100644
index 786f6cd..0000000
--- a/3rdparty/lua/src/ldblib.c
+++ /dev/null
@@ -1,456 +0,0 @@
-/*
-** $Id: ldblib.c,v 1.151 2015/11/23 11:29:43 roberto Exp $
-** Interface from Lua to its debug API
-** See Copyright Notice in lua.h
-*/
-
-#define ldblib_c
-#define LUA_LIB
-
-#include "lprefix.h"
-
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "lua.h"
-
-#include "lauxlib.h"
-#include "lualib.h"
-
-
-/*
-** The hook table at registry[&HOOKKEY] maps threads to their current
-** hook function. (We only need the unique address of 'HOOKKEY'.)
-*/
-static const int HOOKKEY = 0;
-
-
-/*
-** 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
-** checked.
-*/
-static void checkstack (lua_State *L, lua_State *L1, int n) {
- if (L != L1 && !lua_checkstack(L1, n))
- luaL_error(L, "stack overflow");
-}
-
-
-static int db_getregistry (lua_State *L) {
- lua_pushvalue(L, LUA_REGISTRYINDEX);
- return 1;
-}
-
-
-static int db_getmetatable (lua_State *L) {
- luaL_checkany(L, 1);
- if (!lua_getmetatable(L, 1)) {
- lua_pushnil(L); /* no metatable */
- }
- return 1;
-}
-
-
-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");
- lua_settop(L, 2);
- lua_setmetatable(L, 1);
- return 1; /* return 1st argument */
-}
-
-
-static int db_getuservalue (lua_State *L) {
- if (lua_type(L, 1) != LUA_TUSERDATA)
- lua_pushnil(L);
- else
- lua_getuservalue(L, 1);
- return 1;
-}
-
-
-static int db_setuservalue (lua_State *L) {
- luaL_checktype(L, 1, LUA_TUSERDATA);
- luaL_checkany(L, 2);
- lua_settop(L, 2);
- lua_setuservalue(L, 1);
- return 1;
-}
-
-
-/*
-** 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 lua_State *getthread (lua_State *L, int *arg) {
- if (lua_isthread(L, 1)) {
- *arg = 1;
- return lua_tothread(L, 1);
- }
- else {
- *arg = 0;
- return L; /* function will operate over current thread */
- }
-}
-
-
-/*
-** 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 */
- else
- lua_xmove(L1, L, 1); /* move object to the "main" stack */
- lua_setfield(L, -2, fname); /* put object into table */
-}
-
-
-/*
-** 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, "flnStu");
- checkstack(L, L1, 3);
- 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)) {
- lua_pushnil(L); /* level out of range */
- return 1;
- }
- }
- if (!lua_getinfo(L1, options, &ar))
- return luaL_argerror(L, arg+2, "invalid option");
- lua_newtable(L); /* table to collect results */
- if (strchr(options, '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);
- }
- if (strchr(options, 'l'))
- settabsi(L, "currentline", ar.currentline);
- 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, '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);
- 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 */
- lua_pushstring(L, lua_getlocal(L, NULL, nvar)); /* push local name */
- return 1; /* return only name (there is no value) */
- }
- else { /* stack-level argument */
- 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");
- 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 {
- lua_pushnil(L); /* no name (nor value) */
- 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 (!lua_getstack(L1, level, &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);
- 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 */
- 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 */
- return get + 1;
-}
-
-
-static int db_getupvalue (lua_State *L) {
- return auxupvalue(L, 1);
-}
-
-
-static int db_setupvalue (lua_State *L) {
- luaL_checkany(L, 3);
- return auxupvalue(L, 0);
-}
-
-
-/*
-** Check whether a given upvalue from a given closure exists and
-** returns its index
-*/
-static int checkupval (lua_State *L, int argf, int argnup) {
- int nup = (int)luaL_checkinteger(L, argnup); /* upvalue index */
- luaL_checktype(L, argf, LUA_TFUNCTION); /* closure */
- luaL_argcheck(L, (lua_getupvalue(L, argf, nup) != NULL), argnup,
- "invalid upvalue index");
- return nup;
-}
-
-
-static int db_upvalueid (lua_State *L) {
- int n = checkupval(L, 1, 2);
- lua_pushlightuserdata(L, lua_upvalueid(L, 1, n));
- return 1;
-}
-
-
-static int db_upvaluejoin (lua_State *L) {
- int n1 = checkupval(L, 1, 2);
- int n2 = checkupval(L, 3, 4);
- 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_rawgetp(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 */
- if (ar->currentline >= 0)
- lua_pushinteger(L, ar->currentline); /* push current line */
- else lua_pushnil(L);
- lua_assert(lua_getinfo(L, "lS", ar));
- lua_call(L, 2, 0); /* call hook function */
- }
-}
-
-
-/*
-** 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;
- if (strchr(smask, 'r')) mask |= LUA_MASKRET;
- if (strchr(smask, 'l')) mask |= LUA_MASKLINE;
- if (count > 0) mask |= LUA_MASKCOUNT;
- return mask;
-}
-
-
-/*
-** 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';
- if (mask & LUA_MASKRET) smask[i++] = 'r';
- if (mask & LUA_MASKLINE) smask[i++] = 'l';
- smask[i] = '\0';
- return smask;
-}
-
-
-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? */
- 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);
- 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 */
- lua_pushstring(L, "k");
- lua_setfield(L, -2, "__mode"); /** hooktable.__mode = "k" */
- lua_pushvalue(L, -1);
- lua_setmetatable(L, -2); /* setmetatable(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);
- return 0;
-}
-
-
-static int db_gethook (lua_State *L) {
- int arg;
- lua_State *L1 = getthread(L, &arg);
- char buff[5];
- int mask = lua_gethookmask(L1);
- lua_Hook hook = lua_gethook(L1);
- if (hook == NULL) /* no hook? */
- lua_pushnil(L);
- else if (hook != hookf) /* external hook? */
- lua_pushliteral(L, "external hook");
- else { /* hook table must exist */
- lua_rawgetp(L, LUA_REGISTRYINDEX, &HOOKKEY);
- checkstack(L, L1, 1);
- lua_pushthread(L1); lua_xmove(L1, L, 1);
- lua_rawget(L, -2); /* 1st result = hooktable[L1] */
- 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 */
- return 3;
-}
-
-
-static int db_debug (lua_State *L) {
- for (;;) {
- char buffer[250];
- lua_writestringerror("%s", "lua_debug> ");
- 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", lua_tostring(L, -1));
- lua_settop(L, 0); /* remove eventual returns */
- }
-}
-
-
-static int db_traceback (lua_State *L) {
- 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);
- }
- return 1;
-}
-
-
-static const luaL_Reg dblib[] = {
- {"debug", db_debug},
- {"getuservalue", db_getuservalue},
- {"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},
- {"sethook", db_sethook},
- {"setlocal", db_setlocal},
- {"setmetatable", db_setmetatable},
- {"setupvalue", db_setupvalue},
- {"traceback", db_traceback},
- {NULL, NULL}
-};
-
-
-LUAMOD_API int luaopen_debug (lua_State *L) {
- luaL_newlib(L, dblib);
- return 1;
-}
-