1997-09-16 23:25:59 +04:00
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/*
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2003-07-07 17:37:56 +04:00
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** $Id: lvm.c,v 1.287 2003/05/14 12:09:12 roberto Exp roberto $
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1997-09-16 23:25:59 +04:00
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** Lua virtual machine
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** See Copyright Notice in lua.h
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*/
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2001-02-07 21:13:49 +03:00
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#include <stdarg.h>
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1998-12-24 17:57:23 +03:00
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#include <stdlib.h>
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1997-09-16 23:25:59 +04:00
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#include <string.h>
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2003-03-07 16:21:31 +03:00
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/* needed only when `lua_number2str' uses `sprintf' */
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#include <stdio.h>
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2002-12-04 20:38:31 +03:00
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#define lvm_c
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2000-06-12 17:52:05 +04:00
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#include "lua.h"
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1999-12-29 19:31:15 +03:00
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#include "ldebug.h"
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1997-09-16 23:25:59 +04:00
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#include "ldo.h"
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#include "lfunc.h"
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#include "lgc.h"
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1998-12-27 23:25:20 +03:00
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#include "lobject.h"
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1997-09-16 23:25:59 +04:00
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#include "lopcodes.h"
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1997-11-19 20:29:23 +03:00
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#include "lstate.h"
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1997-09-16 23:25:59 +04:00
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#include "lstring.h"
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#include "ltable.h"
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#include "ltm.h"
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#include "lvm.h"
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2002-08-05 21:36:24 +04:00
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2002-06-05 16:34:19 +04:00
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/* function to convert a lua_Number to a string */
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#ifndef lua_number2str
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#define lua_number2str(s,n) sprintf((s), LUA_NUMBER_FMT, (n))
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#endif
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2002-02-06 01:39:12 +03:00
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/* limit for table tag-method chains (to avoid loops) */
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2002-07-05 22:27:39 +04:00
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#define MAXTAGLOOP 100
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2002-02-06 01:39:12 +03:00
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1997-09-16 23:25:59 +04:00
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2001-06-05 22:17:01 +04:00
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const TObject *luaV_tonumber (const TObject *obj, TObject *n) {
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2001-06-28 18:48:44 +04:00
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lua_Number num;
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2002-08-05 21:36:24 +04:00
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if (ttisnumber(obj)) return obj;
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if (ttisstring(obj) && luaO_str2d(svalue(obj), &num)) {
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2001-06-28 18:48:44 +04:00
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setnvalue(n, num);
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2001-06-05 22:17:01 +04:00
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return n;
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1997-09-16 23:25:59 +04:00
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}
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2001-06-05 22:17:01 +04:00
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else
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return NULL;
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1997-09-16 23:25:59 +04:00
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}
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2002-11-14 19:15:53 +03:00
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int luaV_tostring (lua_State *L, StkId obj) {
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2002-08-05 21:36:24 +04:00
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if (!ttisnumber(obj))
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2002-02-07 20:24:05 +03:00
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return 0;
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1997-09-16 23:25:59 +04:00
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else {
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2001-11-28 23:13:13 +03:00
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char s[32]; /* 16 digits, sign, point and \0 (+ some extra...) */
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2002-02-15 00:46:43 +03:00
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lua_number2str(s, nvalue(obj));
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2002-11-14 19:15:53 +03:00
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setsvalue2s(obj, luaS_new(L, s));
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2002-02-07 20:24:05 +03:00
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return 1;
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1997-09-16 23:25:59 +04:00
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}
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}
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2002-03-25 20:47:14 +03:00
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static void traceexec (lua_State *L) {
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2002-11-18 14:01:55 +03:00
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lu_byte mask = L->hookmask;
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2002-08-12 21:23:12 +04:00
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if (mask > LUA_MASKLINE) { /* instruction-hook set? */
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2002-07-08 22:21:33 +04:00
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if (L->hookcount == 0) {
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resethookcount(L);
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2002-11-25 14:20:29 +03:00
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luaD_callhook(L, LUA_HOOKCOUNT, -1);
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2002-07-08 22:21:33 +04:00
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return;
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}
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}
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if (mask & LUA_MASKLINE) {
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CallInfo *ci = L->ci;
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Proto *p = ci_func(ci)->l.p;
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2003-07-07 17:37:56 +04:00
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int pc = pcRel(*ci->u.l.pc, p);
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int newline = getline(p, pc);
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2002-11-18 14:01:55 +03:00
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if (!L->hookinit) {
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luaG_inithooks(L);
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2003-07-07 17:37:56 +04:00
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if (pc != 0) /* not function start? */
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return; /* begin tracing on next line */
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2002-11-18 14:01:55 +03:00
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}
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2002-08-07 23:22:39 +04:00
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lua_assert(ci->state & CI_HASFRAME);
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2003-07-07 17:37:56 +04:00
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if (pc == 0) /* function may be starting now? */
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2002-08-07 23:22:39 +04:00
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ci->u.l.savedpc = *ci->u.l.pc; /* initialize `savedpc' */
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2002-07-08 22:21:33 +04:00
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/* calls linehook when enters a new line or jumps back (loop) */
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2002-08-07 23:22:39 +04:00
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if (*ci->u.l.pc <= ci->u.l.savedpc ||
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2002-08-05 21:36:24 +04:00
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newline != getline(p, pcRel(ci->u.l.savedpc, p))) {
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2002-07-08 22:21:33 +04:00
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luaD_callhook(L, LUA_HOOKLINE, newline);
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ci = L->ci; /* previous call may reallocate `ci' */
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}
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2002-08-07 23:22:39 +04:00
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ci->u.l.savedpc = *ci->u.l.pc;
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2002-04-10 16:11:07 +04:00
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}
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2000-06-26 23:28:31 +04:00
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}
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2002-01-26 01:14:54 +03:00
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static void callTMres (lua_State *L, const TObject *f,
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2003-05-05 22:39:57 +04:00
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const TObject *p1, const TObject *p2, StkId res) {
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ptrdiff_t result = savestack(L, res);
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2002-11-07 18:37:10 +03:00
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setobj2s(L->top, f); /* push function */
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setobj2s(L->top+1, p1); /* 1st argument */
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setobj2s(L->top+2, p2); /* 2nd argument */
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2002-01-26 01:14:54 +03:00
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luaD_checkstack(L, 3); /* cannot check before (could invalidate p1, p2) */
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L->top += 3;
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luaD_call(L, L->top - 3, 1);
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2003-05-05 22:39:57 +04:00
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res = restorestack(L, result);
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L->top--;
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setobjs2s(res, L->top);
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2002-01-26 01:14:54 +03:00
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}
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1997-09-16 23:25:59 +04:00
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2001-06-15 23:17:33 +04:00
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2001-12-05 23:15:18 +03:00
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static void callTM (lua_State *L, const TObject *f,
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2002-01-26 01:14:54 +03:00
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const TObject *p1, const TObject *p2, const TObject *p3) {
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2002-11-07 18:37:10 +03:00
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setobj2s(L->top, f); /* push function */
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setobj2s(L->top+1, p1); /* 1st argument */
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setobj2s(L->top+2, p2); /* 2nd argument */
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setobj2s(L->top+3, p3); /* 3th argument */
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2002-01-26 01:14:54 +03:00
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luaD_checkstack(L, 4); /* cannot check before (could invalidate p1...p3) */
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L->top += 4;
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luaD_call(L, L->top - 4, 0);
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2001-02-07 21:13:49 +03:00
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}
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2003-05-05 22:39:57 +04:00
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void luaV_gettable (lua_State *L, const TObject *t, TObject *key, StkId val) {
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int loop;
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for (loop = 0; loop < MAXTAGLOOP; loop++) {
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const TObject *tm;
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if (ttistable(t)) { /* `t' is a table? */
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Table *h = hvalue(t);
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const TObject *res = luaH_get(h, key); /* do a primitive set */
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if (!ttisnil(res) || /* result is no nil? */
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(tm = fasttm(L, h->metatable, TM_INDEX)) == NULL) { /* or no TM? */
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setobj2s(val, res);
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return;
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}
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/* else will try the tag method */
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}
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else if (ttisnil(tm = luaT_gettmbyobj(L, t, TM_INDEX)))
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luaG_typeerror(L, t, "index");
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if (ttisfunction(tm)) {
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callTMres(L, tm, t, key, val);
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return;
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}
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t = tm; /* else repeat with `tm' */
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2002-07-05 22:27:39 +04:00
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}
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2003-05-05 22:39:57 +04:00
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luaG_runerror(L, "loop in gettable");
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1997-09-16 23:25:59 +04:00
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}
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2002-03-19 15:45:25 +03:00
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void luaV_settable (lua_State *L, const TObject *t, TObject *key, StkId val) {
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2003-05-05 22:39:57 +04:00
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int loop;
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for (loop = 0; loop < MAXTAGLOOP; loop++) {
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const TObject *tm;
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2002-08-05 21:36:24 +04:00
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if (ttistable(t)) { /* `t' is a table? */
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2002-06-14 21:21:32 +04:00
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Table *h = hvalue(t);
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2002-06-24 17:08:45 +04:00
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TObject *oldval = luaH_set(L, h, key); /* do a primitive set */
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2002-08-05 21:36:24 +04:00
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if (!ttisnil(oldval) || /* result is no nil? */
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2002-06-24 17:08:45 +04:00
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(tm = fasttm(L, h->metatable, TM_NEWINDEX)) == NULL) { /* or no TM? */
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2002-11-14 19:15:53 +03:00
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setobj2t(oldval, val); /* write barrier */
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2002-06-24 17:08:45 +04:00
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return;
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2002-05-28 00:35:40 +04:00
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}
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2002-06-14 21:21:32 +04:00
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/* else will try the tag method */
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2001-02-12 16:04:19 +03:00
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}
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2002-09-20 00:12:47 +04:00
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else if (ttisnil(tm = luaT_gettmbyobj(L, t, TM_NEWINDEX)))
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2001-11-28 23:13:13 +03:00
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luaG_typeerror(L, t, "index");
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2002-08-05 21:36:24 +04:00
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if (ttisfunction(tm)) {
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2002-06-14 21:21:32 +04:00
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callTM(L, tm, t, key, val);
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return;
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2001-12-05 23:15:18 +03:00
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}
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2002-06-14 21:21:32 +04:00
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t = tm; /* else repeat with `tm' */
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2003-05-05 22:39:57 +04:00
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}
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2002-06-14 21:21:32 +04:00
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luaG_runerror(L, "loop in settable");
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1997-09-16 23:25:59 +04:00
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}
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2001-02-07 21:13:49 +03:00
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static int call_binTM (lua_State *L, const TObject *p1, const TObject *p2,
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2002-11-07 18:37:10 +03:00
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StkId res, TMS event) {
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2001-12-05 23:15:18 +03:00
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const TObject *tm = luaT_gettmbyobj(L, p1, event); /* try first operand */
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2002-08-05 21:36:24 +04:00
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if (ttisnil(tm))
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2001-12-05 23:15:18 +03:00
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tm = luaT_gettmbyobj(L, p2, event); /* try second operand */
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2002-08-05 21:36:24 +04:00
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if (!ttisfunction(tm)) return 0;
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2003-05-05 22:39:57 +04:00
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callTMres(L, tm, p1, p2, res);
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2000-08-10 23:50:47 +04:00
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return 1;
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1997-09-16 23:25:59 +04:00
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}
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2003-01-27 18:12:52 +03:00
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static const TObject *get_compTM (lua_State *L, Table *mt1, Table *mt2,
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TMS event) {
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const TObject *tm1 = fasttm(L, mt1, event);
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const TObject *tm2;
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if (tm1 == NULL) return NULL; /* no metamethod */
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if (mt1 == mt2) return tm1; /* same metatables => same metamethods */
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tm2 = fasttm(L, mt2, event);
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if (tm2 == NULL) return NULL; /* no metamethod */
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if (luaO_rawequalObj(tm1, tm2)) /* same metamethods? */
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return tm1;
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return NULL;
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}
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static int call_orderTM (lua_State *L, const TObject *p1, const TObject *p2,
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TMS event) {
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const TObject *tm1 = luaT_gettmbyobj(L, p1, event);
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const TObject *tm2;
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if (ttisnil(tm1)) return -1; /* no metamethod? */
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tm2 = luaT_gettmbyobj(L, p2, event);
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if (!luaO_rawequalObj(tm1, tm2)) /* different metamethods? */
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return -1;
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2003-05-05 22:39:57 +04:00
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callTMres(L, tm1, p1, p2, L->top);
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2003-01-27 18:12:52 +03:00
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return !l_isfalse(L->top);
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}
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2002-05-06 19:51:41 +04:00
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static int luaV_strcmp (const TString *ls, const TString *rs) {
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2001-11-28 23:13:13 +03:00
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const char *l = getstr(ls);
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2001-06-16 00:36:57 +04:00
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size_t ll = ls->tsv.len;
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2001-11-28 23:13:13 +03:00
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const char *r = getstr(rs);
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2001-06-16 00:36:57 +04:00
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size_t lr = rs->tsv.len;
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1998-03-06 19:54:42 +03:00
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for (;;) {
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2000-05-24 17:54:49 +04:00
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int temp = strcoll(l, r);
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2002-06-12 18:56:22 +04:00
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if (temp != 0) return temp;
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2001-02-22 21:59:59 +03:00
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else { /* strings are equal up to a `\0' */
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size_t len = strlen(l); /* index of first `\0' in both strings */
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2001-01-11 21:59:32 +03:00
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if (len == lr) /* r is finished? */
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2002-06-12 18:56:22 +04:00
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return (len == ll) ? 0 : 1;
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2001-01-11 21:59:32 +03:00
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else if (len == ll) /* l is finished? */
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2002-06-12 18:56:22 +04:00
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return -1; /* l is smaller than r (because r is not finished) */
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2001-02-22 21:59:59 +03:00
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/* both strings longer than `len'; go on comparing (after the `\0') */
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2000-05-24 17:54:49 +04:00
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len++;
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l += len; ll -= len; r += len; lr -= len;
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}
|
1998-03-06 19:54:42 +03:00
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}
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}
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2000-02-22 21:12:46 +03:00
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2002-06-12 18:56:22 +04:00
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int luaV_lessthan (lua_State *L, const TObject *l, const TObject *r) {
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2003-01-27 18:12:52 +03:00
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int res;
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2002-06-24 19:07:21 +04:00
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if (ttype(l) != ttype(r))
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return luaG_ordererror(L, l, r);
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2002-08-05 21:36:24 +04:00
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else if (ttisnumber(l))
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2002-06-12 18:56:22 +04:00
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return nvalue(l) < nvalue(r);
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2002-08-05 21:36:24 +04:00
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else if (ttisstring(l))
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2002-06-12 18:56:22 +04:00
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return luaV_strcmp(tsvalue(l), tsvalue(r)) < 0;
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2003-01-27 18:12:52 +03:00
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else if ((res = call_orderTM(L, l, r, TM_LT)) != -1)
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return res;
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2002-06-24 19:07:21 +04:00
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return luaG_ordererror(L, l, r);
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2002-06-12 18:56:22 +04:00
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}
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static int luaV_lessequal (lua_State *L, const TObject *l, const TObject *r) {
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2003-01-27 18:12:52 +03:00
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int res;
|
2002-06-24 19:07:21 +04:00
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|
|
if (ttype(l) != ttype(r))
|
|
|
|
return luaG_ordererror(L, l, r);
|
2002-08-05 21:36:24 +04:00
|
|
|
else if (ttisnumber(l))
|
2002-06-12 18:56:22 +04:00
|
|
|
return nvalue(l) <= nvalue(r);
|
2002-08-05 21:36:24 +04:00
|
|
|
else if (ttisstring(l))
|
2002-06-12 18:56:22 +04:00
|
|
|
return luaV_strcmp(tsvalue(l), tsvalue(r)) <= 0;
|
2003-01-27 18:12:52 +03:00
|
|
|
else if ((res = call_orderTM(L, l, r, TM_LE)) != -1) /* first try `le' */
|
|
|
|
return res;
|
|
|
|
else if ((res = call_orderTM(L, r, l, TM_LT)) != -1) /* else try `lt' */
|
|
|
|
return !res;
|
2002-06-24 19:07:21 +04:00
|
|
|
return luaG_ordererror(L, l, r);
|
1997-09-16 23:25:59 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2002-06-13 17:39:55 +04:00
|
|
|
int luaV_equalval (lua_State *L, const TObject *t1, const TObject *t2) {
|
2003-04-03 17:35:34 +04:00
|
|
|
const TObject *tm;
|
2002-06-13 17:39:55 +04:00
|
|
|
lua_assert(ttype(t1) == ttype(t2));
|
|
|
|
switch (ttype(t1)) {
|
|
|
|
case LUA_TNIL: return 1;
|
|
|
|
case LUA_TNUMBER: return nvalue(t1) == nvalue(t2);
|
|
|
|
case LUA_TBOOLEAN: return bvalue(t1) == bvalue(t2); /* true must be 1 !! */
|
2002-07-17 20:25:13 +04:00
|
|
|
case LUA_TLIGHTUSERDATA: return pvalue(t1) == pvalue(t2);
|
2002-10-26 00:05:28 +04:00
|
|
|
case LUA_TUSERDATA: {
|
2002-06-13 17:39:55 +04:00
|
|
|
if (uvalue(t1) == uvalue(t2)) return 1;
|
2003-01-27 18:12:52 +03:00
|
|
|
tm = get_compTM(L, uvalue(t1)->uv.metatable, uvalue(t2)->uv.metatable,
|
|
|
|
TM_EQ);
|
|
|
|
break; /* will try TM */
|
2002-10-26 00:05:28 +04:00
|
|
|
}
|
|
|
|
case LUA_TTABLE: {
|
2002-06-13 17:39:55 +04:00
|
|
|
if (hvalue(t1) == hvalue(t2)) return 1;
|
2003-01-27 18:12:52 +03:00
|
|
|
tm = get_compTM(L, hvalue(t1)->metatable, hvalue(t2)->metatable, TM_EQ);
|
|
|
|
break; /* will try TM */
|
2002-10-26 00:05:28 +04:00
|
|
|
}
|
|
|
|
default: return gcvalue(t1) == gcvalue(t2);
|
2002-06-13 17:39:55 +04:00
|
|
|
}
|
2003-01-27 18:12:52 +03:00
|
|
|
if (tm == NULL) return 0; /* no TM? */
|
2003-05-05 22:39:57 +04:00
|
|
|
callTMres(L, tm, t1, t2, L->top); /* call TM */
|
2002-06-13 17:39:55 +04:00
|
|
|
return !l_isfalse(L->top);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2002-06-03 18:08:43 +04:00
|
|
|
void luaV_concat (lua_State *L, int total, int last) {
|
2000-03-09 03:19:22 +03:00
|
|
|
do {
|
2002-11-21 18:16:04 +03:00
|
|
|
StkId top = L->base + last + 1;
|
2000-03-09 03:19:22 +03:00
|
|
|
int n = 2; /* number of elements handled in this pass (at least 2) */
|
2002-02-07 20:24:05 +03:00
|
|
|
if (!tostring(L, top-2) || !tostring(L, top-1)) {
|
2001-02-07 21:13:49 +03:00
|
|
|
if (!call_binTM(L, top-2, top-1, top-2, TM_CONCAT))
|
2001-06-05 22:17:01 +04:00
|
|
|
luaG_concaterror(L, top-2, top-1);
|
2001-06-16 00:36:57 +04:00
|
|
|
} else if (tsvalue(top-1)->tsv.len > 0) { /* if len=0, do nothing */
|
2000-03-17 16:09:12 +03:00
|
|
|
/* at least two string values; get as many as possible */
|
2001-08-31 23:46:07 +04:00
|
|
|
lu_mem tl = cast(lu_mem, tsvalue(top-1)->tsv.len) +
|
|
|
|
cast(lu_mem, tsvalue(top-2)->tsv.len);
|
2001-11-28 23:13:13 +03:00
|
|
|
char *buffer;
|
2000-03-09 03:19:22 +03:00
|
|
|
int i;
|
2002-02-07 20:24:05 +03:00
|
|
|
while (n < total && tostring(L, top-n-1)) { /* collect total length */
|
2001-06-16 00:36:57 +04:00
|
|
|
tl += tsvalue(top-n-1)->tsv.len;
|
2000-03-09 03:19:22 +03:00
|
|
|
n++;
|
|
|
|
}
|
2002-05-15 22:57:44 +04:00
|
|
|
if (tl > MAX_SIZET) luaG_runerror(L, "string size overflow");
|
2002-10-08 22:46:08 +04:00
|
|
|
buffer = luaZ_openspace(L, &G(L)->buff, tl);
|
2000-03-09 03:19:22 +03:00
|
|
|
tl = 0;
|
|
|
|
for (i=n; i>0; i--) { /* concat all strings */
|
2001-06-16 00:36:57 +04:00
|
|
|
size_t l = tsvalue(top-i)->tsv.len;
|
2001-02-09 23:22:29 +03:00
|
|
|
memcpy(buffer+tl, svalue(top-i), l);
|
2000-03-09 03:19:22 +03:00
|
|
|
tl += l;
|
|
|
|
}
|
2002-11-07 18:37:10 +03:00
|
|
|
setsvalue2s(top-n, luaS_newlstr(L, buffer, tl));
|
2000-03-09 03:19:22 +03:00
|
|
|
}
|
|
|
|
total -= n-1; /* got `n' strings to create 1 new */
|
2002-01-17 01:03:57 +03:00
|
|
|
last -= n-1;
|
2000-03-09 03:19:22 +03:00
|
|
|
} while (total > 1); /* repeat until only 1 result left */
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2002-08-21 00:03:05 +04:00
|
|
|
static void Arith (lua_State *L, StkId ra,
|
|
|
|
const TObject *rb, const TObject *rc, TMS op) {
|
2001-12-11 01:10:30 +03:00
|
|
|
TObject tempb, tempc;
|
2002-06-24 18:11:14 +04:00
|
|
|
const TObject *b, *c;
|
|
|
|
if ((b = luaV_tonumber(rb, &tempb)) != NULL &&
|
|
|
|
(c = luaV_tonumber(rc, &tempc)) != NULL) {
|
|
|
|
switch (op) {
|
|
|
|
case TM_ADD: setnvalue(ra, nvalue(b) + nvalue(c)); break;
|
|
|
|
case TM_SUB: setnvalue(ra, nvalue(b) - nvalue(c)); break;
|
|
|
|
case TM_MUL: setnvalue(ra, nvalue(b) * nvalue(c)); break;
|
|
|
|
case TM_DIV: setnvalue(ra, nvalue(b) / nvalue(c)); break;
|
|
|
|
case TM_POW: {
|
2003-03-11 15:30:37 +03:00
|
|
|
const TObject *f = luaH_getstr(hvalue(gt(L)), G(L)->tmname[TM_POW]);
|
2002-08-05 21:36:24 +04:00
|
|
|
if (!ttisfunction(f))
|
2003-03-11 15:30:37 +03:00
|
|
|
luaG_runerror(L, "`__pow' (`^' operator) is not a function");
|
2003-05-05 22:39:57 +04:00
|
|
|
callTMres(L, f, b, c, ra);
|
2002-06-24 18:11:14 +04:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
default: lua_assert(0); break;
|
|
|
|
}
|
2001-12-11 01:10:30 +03:00
|
|
|
}
|
2002-06-24 18:11:14 +04:00
|
|
|
else if (!call_binTM(L, rb, rc, ra, op))
|
|
|
|
luaG_aritherror(L, rb, rc);
|
2001-12-11 01:10:30 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2000-09-20 21:57:08 +04:00
|
|
|
|
2001-06-05 22:17:01 +04:00
|
|
|
/*
|
|
|
|
** some macros for common tasks in `luaV_execute'
|
|
|
|
*/
|
|
|
|
|
2001-12-20 18:13:38 +03:00
|
|
|
#define runtime_check(L, c) { if (!(c)) return 0; }
|
2001-06-05 22:17:01 +04:00
|
|
|
|
|
|
|
#define RA(i) (base+GETARG_A(i))
|
2002-11-21 18:46:44 +03:00
|
|
|
/* to be used after possible stack reallocation */
|
|
|
|
#define XRA(i) (L->base+GETARG_A(i))
|
2003-05-14 16:09:12 +04:00
|
|
|
#define RB(i) check_exp(getBMode(GET_OPCODE(i)) == OpArgR, base+GETARG_B(i))
|
|
|
|
#define RC(i) check_exp(getCMode(GET_OPCODE(i)) == OpArgR, base+GETARG_C(i))
|
|
|
|
#define RKB(i) check_exp(getBMode(GET_OPCODE(i)) == OpArgK, \
|
|
|
|
(GETARG_B(i) < MAXSTACK) ? base+GETARG_B(i) : k+GETARG_B(i)-MAXSTACK)
|
|
|
|
#define RKC(i) check_exp(getCMode(GET_OPCODE(i)) == OpArgK, \
|
|
|
|
(GETARG_C(i) < MAXSTACK) ? base+GETARG_C(i) : k+GETARG_C(i)-MAXSTACK)
|
|
|
|
#define KBx(i) check_exp(getBMode(GET_OPCODE(i)) == OpArgK, k+GETARG_Bx(i))
|
2001-06-05 22:17:01 +04:00
|
|
|
|
|
|
|
|
2002-03-22 19:54:31 +03:00
|
|
|
#define dojump(pc, i) ((pc) += (i))
|
2000-09-20 21:57:08 +04:00
|
|
|
|
2002-03-25 20:47:14 +03:00
|
|
|
|
2002-01-10 01:02:47 +03:00
|
|
|
StkId luaV_execute (lua_State *L) {
|
|
|
|
LClosure *cl;
|
|
|
|
TObject *k;
|
2001-06-05 22:17:01 +04:00
|
|
|
const Instruction *pc;
|
2002-03-25 20:47:14 +03:00
|
|
|
callentry: /* entry point when calling new functions */
|
2002-08-07 23:22:39 +04:00
|
|
|
L->ci->u.l.pc = &pc;
|
2002-07-16 18:26:56 +04:00
|
|
|
if (L->hookmask & LUA_MASKCALL)
|
|
|
|
luaD_callhook(L, LUA_HOOKCALL, -1);
|
2002-03-25 20:47:14 +03:00
|
|
|
retentry: /* entry point when returning to old functions */
|
2002-11-19 11:50:56 +03:00
|
|
|
lua_assert(L->ci->state == CI_SAVEDPC ||
|
|
|
|
L->ci->state == (CI_SAVEDPC | CI_CALLING));
|
2002-08-07 23:22:39 +04:00
|
|
|
L->ci->state = CI_HASFRAME; /* activate frame */
|
|
|
|
pc = L->ci->u.l.savedpc;
|
2002-11-21 18:46:44 +03:00
|
|
|
cl = &clvalue(L->base - 1)->l;
|
2002-03-22 19:54:31 +03:00
|
|
|
k = cl->p->k;
|
2000-06-26 23:28:31 +04:00
|
|
|
/* main loop of interpreter */
|
1998-12-03 18:45:15 +03:00
|
|
|
for (;;) {
|
2000-06-29 00:21:06 +04:00
|
|
|
const Instruction i = *pc++;
|
2002-11-21 18:46:44 +03:00
|
|
|
StkId base, ra;
|
2002-11-25 20:47:13 +03:00
|
|
|
if ((L->hookmask & (LUA_MASKLINE | LUA_MASKCOUNT)) &&
|
2002-11-18 18:24:11 +03:00
|
|
|
(--L->hookcount == 0 || L->hookmask & LUA_MASKLINE)) {
|
2002-08-05 21:36:24 +04:00
|
|
|
traceexec(L);
|
2002-11-18 18:24:11 +03:00
|
|
|
if (L->ci->state & CI_YIELD) { /* did hook yield? */
|
|
|
|
L->ci->u.l.savedpc = pc - 1;
|
2002-11-19 11:50:56 +03:00
|
|
|
L->ci->state = CI_YIELD | CI_SAVEDPC;
|
2002-11-18 18:24:11 +03:00
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
}
|
2002-08-07 18:24:24 +04:00
|
|
|
/* warning!! several calls may realloc the stack and invalidate `ra' */
|
2002-11-21 18:46:44 +03:00
|
|
|
base = L->base;
|
2002-08-07 18:24:24 +04:00
|
|
|
ra = RA(i);
|
2002-11-21 18:16:04 +03:00
|
|
|
lua_assert(L->ci->state & CI_HASFRAME);
|
2002-11-21 18:46:44 +03:00
|
|
|
lua_assert(base == L->ci->base);
|
2002-11-21 18:16:04 +03:00
|
|
|
lua_assert(L->top <= L->stack + L->stacksize && L->top >= base);
|
2002-03-25 20:47:14 +03:00
|
|
|
lua_assert(L->top == L->ci->top ||
|
|
|
|
GET_OPCODE(i) == OP_CALL || GET_OPCODE(i) == OP_TAILCALL ||
|
|
|
|
GET_OPCODE(i) == OP_RETURN || GET_OPCODE(i) == OP_SETLISTO);
|
2000-02-14 19:51:08 +03:00
|
|
|
switch (GET_OPCODE(i)) {
|
2001-06-05 22:17:01 +04:00
|
|
|
case OP_MOVE: {
|
2002-11-07 18:37:10 +03:00
|
|
|
setobjs2s(ra, RB(i));
|
2000-01-25 16:57:18 +03:00
|
|
|
break;
|
2000-08-14 21:45:59 +04:00
|
|
|
}
|
2001-06-05 22:17:01 +04:00
|
|
|
case OP_LOADK: {
|
2002-11-07 18:37:10 +03:00
|
|
|
setobj2s(ra, KBx(i));
|
1999-02-02 22:41:17 +03:00
|
|
|
break;
|
2000-08-14 21:45:59 +04:00
|
|
|
}
|
2001-12-12 01:48:44 +03:00
|
|
|
case OP_LOADBOOL: {
|
|
|
|
setbvalue(ra, GETARG_B(i));
|
|
|
|
if (GETARG_C(i)) pc++; /* skip next instruction (if C) */
|
|
|
|
break;
|
|
|
|
}
|
2001-06-05 22:17:01 +04:00
|
|
|
case OP_LOADNIL: {
|
|
|
|
TObject *rb = RB(i);
|
|
|
|
do {
|
2001-06-08 16:29:27 +04:00
|
|
|
setnilvalue(rb--);
|
|
|
|
} while (rb >= ra);
|
1997-09-16 23:25:59 +04:00
|
|
|
break;
|
2000-08-14 21:45:59 +04:00
|
|
|
}
|
2001-09-07 21:39:10 +04:00
|
|
|
case OP_GETUPVAL: {
|
|
|
|
int b = GETARG_B(i);
|
2002-11-07 18:37:10 +03:00
|
|
|
setobj2s(ra, cl->upvals[b]->v);
|
2001-09-07 21:39:10 +04:00
|
|
|
break;
|
|
|
|
}
|
2000-08-14 21:45:59 +04:00
|
|
|
case OP_GETGLOBAL: {
|
2002-08-21 00:03:05 +04:00
|
|
|
TObject *rb = KBx(i);
|
2002-08-05 21:36:24 +04:00
|
|
|
lua_assert(ttisstring(rb) && ttistable(&cl->g));
|
2003-05-05 22:39:57 +04:00
|
|
|
luaV_gettable(L, &cl->g, rb, ra);
|
1997-09-16 23:25:59 +04:00
|
|
|
break;
|
2000-08-14 21:45:59 +04:00
|
|
|
}
|
|
|
|
case OP_GETTABLE: {
|
2003-05-05 22:39:57 +04:00
|
|
|
luaV_gettable(L, RB(i), RKC(i), ra);
|
1997-09-16 23:25:59 +04:00
|
|
|
break;
|
2000-08-14 21:45:59 +04:00
|
|
|
}
|
|
|
|
case OP_SETGLOBAL: {
|
2002-08-05 21:36:24 +04:00
|
|
|
lua_assert(ttisstring(KBx(i)) && ttistable(&cl->g));
|
2002-06-21 00:41:46 +04:00
|
|
|
luaV_settable(L, &cl->g, KBx(i), ra);
|
1997-09-16 23:25:59 +04:00
|
|
|
break;
|
2000-08-14 21:45:59 +04:00
|
|
|
}
|
2001-09-07 21:39:10 +04:00
|
|
|
case OP_SETUPVAL: {
|
|
|
|
int b = GETARG_B(i);
|
2002-11-14 19:15:53 +03:00
|
|
|
setobj(cl->upvals[b]->v, ra); /* write barrier */
|
2001-09-07 21:39:10 +04:00
|
|
|
break;
|
|
|
|
}
|
2000-08-14 21:45:59 +04:00
|
|
|
case OP_SETTABLE: {
|
2002-08-21 00:03:05 +04:00
|
|
|
luaV_settable(L, ra, RKB(i), RKC(i));
|
1997-09-16 23:25:59 +04:00
|
|
|
break;
|
2000-08-14 21:45:59 +04:00
|
|
|
}
|
2001-06-05 22:17:01 +04:00
|
|
|
case OP_NEWTABLE: {
|
2001-10-25 23:14:14 +04:00
|
|
|
int b = GETARG_B(i);
|
2003-02-18 19:02:56 +03:00
|
|
|
b = fb2int(b);
|
2001-10-25 23:14:14 +04:00
|
|
|
sethvalue(ra, luaH_new(L, b, GETARG_C(i)));
|
2002-11-21 17:18:01 +03:00
|
|
|
luaC_checkGC(L);
|
1997-09-16 23:25:59 +04:00
|
|
|
break;
|
|
|
|
}
|
2001-06-05 22:17:01 +04:00
|
|
|
case OP_SELF: {
|
|
|
|
StkId rb = RB(i);
|
2002-11-07 18:37:10 +03:00
|
|
|
setobjs2s(ra+1, rb);
|
2003-05-05 22:39:57 +04:00
|
|
|
luaV_gettable(L, rb, RKC(i), ra);
|
1997-09-16 23:25:59 +04:00
|
|
|
break;
|
|
|
|
}
|
2000-08-14 21:45:59 +04:00
|
|
|
case OP_ADD: {
|
2002-08-21 00:03:05 +04:00
|
|
|
TObject *rb = RKB(i);
|
|
|
|
TObject *rc = RKC(i);
|
2002-08-05 21:36:24 +04:00
|
|
|
if (ttisnumber(rb) && ttisnumber(rc)) {
|
2002-06-24 18:11:14 +04:00
|
|
|
setnvalue(ra, nvalue(rb) + nvalue(rc));
|
|
|
|
}
|
|
|
|
else
|
|
|
|
Arith(L, ra, rb, rc, TM_ADD);
|
2000-02-22 16:31:43 +03:00
|
|
|
break;
|
2000-08-14 21:45:59 +04:00
|
|
|
}
|
|
|
|
case OP_SUB: {
|
2002-08-21 00:03:05 +04:00
|
|
|
TObject *rb = RKB(i);
|
|
|
|
TObject *rc = RKC(i);
|
2002-08-05 21:36:24 +04:00
|
|
|
if (ttisnumber(rb) && ttisnumber(rc)) {
|
2002-06-24 18:11:14 +04:00
|
|
|
setnvalue(ra, nvalue(rb) - nvalue(rc));
|
|
|
|
}
|
|
|
|
else
|
|
|
|
Arith(L, ra, rb, rc, TM_SUB);
|
1997-09-16 23:25:59 +04:00
|
|
|
break;
|
2000-08-14 21:45:59 +04:00
|
|
|
}
|
2001-06-05 22:17:01 +04:00
|
|
|
case OP_MUL: {
|
2002-08-21 00:03:05 +04:00
|
|
|
TObject *rb = RKB(i);
|
|
|
|
TObject *rc = RKC(i);
|
2002-08-05 21:36:24 +04:00
|
|
|
if (ttisnumber(rb) && ttisnumber(rc)) {
|
2002-06-24 18:11:14 +04:00
|
|
|
setnvalue(ra, nvalue(rb) * nvalue(rc));
|
|
|
|
}
|
|
|
|
else
|
|
|
|
Arith(L, ra, rb, rc, TM_MUL);
|
1997-09-16 23:25:59 +04:00
|
|
|
break;
|
2000-08-14 21:45:59 +04:00
|
|
|
}
|
|
|
|
case OP_DIV: {
|
2002-08-21 00:03:05 +04:00
|
|
|
TObject *rb = RKB(i);
|
|
|
|
TObject *rc = RKC(i);
|
2002-08-05 21:36:24 +04:00
|
|
|
if (ttisnumber(rb) && ttisnumber(rc)) {
|
2002-06-24 18:11:14 +04:00
|
|
|
setnvalue(ra, nvalue(rb) / nvalue(rc));
|
|
|
|
}
|
|
|
|
else
|
|
|
|
Arith(L, ra, rb, rc, TM_DIV);
|
1997-09-16 23:25:59 +04:00
|
|
|
break;
|
2000-08-14 21:45:59 +04:00
|
|
|
}
|
|
|
|
case OP_POW: {
|
2002-08-21 00:03:05 +04:00
|
|
|
Arith(L, ra, RKB(i), RKC(i), TM_POW);
|
1997-09-16 23:25:59 +04:00
|
|
|
break;
|
2000-08-14 21:45:59 +04:00
|
|
|
}
|
2001-06-05 22:17:01 +04:00
|
|
|
case OP_UNM: {
|
|
|
|
const TObject *rb = RB(i);
|
2002-06-24 18:11:14 +04:00
|
|
|
TObject temp;
|
|
|
|
if (tonumber(rb, &temp)) {
|
2001-06-05 22:17:01 +04:00
|
|
|
setnvalue(ra, -nvalue(rb));
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
setnilvalue(&temp);
|
2002-06-24 18:11:14 +04:00
|
|
|
if (!call_binTM(L, RB(i), &temp, ra, TM_UNM))
|
|
|
|
luaG_aritherror(L, RB(i), &temp);
|
1997-09-16 23:25:59 +04:00
|
|
|
}
|
|
|
|
break;
|
2000-08-14 21:45:59 +04:00
|
|
|
}
|
|
|
|
case OP_NOT: {
|
2001-12-12 01:48:44 +03:00
|
|
|
int res = l_isfalse(RB(i)); /* next assignment may change this value */
|
|
|
|
setbvalue(ra, res);
|
1997-09-16 23:25:59 +04:00
|
|
|
break;
|
2000-08-14 21:45:59 +04:00
|
|
|
}
|
2001-06-05 22:17:01 +04:00
|
|
|
case OP_CONCAT: {
|
2002-01-17 01:03:57 +03:00
|
|
|
int b = GETARG_B(i);
|
|
|
|
int c = GETARG_C(i);
|
2002-06-03 18:08:43 +04:00
|
|
|
luaV_concat(L, c-b+1, c); /* may change `base' (and `ra') */
|
2002-11-21 20:19:42 +03:00
|
|
|
base = L->base;
|
|
|
|
setobjs2s(RA(i), base+b);
|
2002-11-21 17:18:01 +03:00
|
|
|
luaC_checkGC(L);
|
2000-03-09 16:57:37 +03:00
|
|
|
break;
|
2000-08-14 21:45:59 +04:00
|
|
|
}
|
2001-06-05 22:17:01 +04:00
|
|
|
case OP_JMP: {
|
2002-04-25 00:07:46 +04:00
|
|
|
dojump(pc, GETARG_sBx(i));
|
2000-03-09 16:57:37 +03:00
|
|
|
break;
|
2000-08-14 21:45:59 +04:00
|
|
|
}
|
2002-08-21 22:56:33 +04:00
|
|
|
case OP_EQ: {
|
2002-08-21 00:03:05 +04:00
|
|
|
if (equalobj(L, RKB(i), RKC(i)) != GETARG_A(i)) pc++;
|
2002-05-09 18:14:34 +04:00
|
|
|
else dojump(pc, GETARG_sBx(*pc) + 1);
|
2000-03-09 16:57:37 +03:00
|
|
|
break;
|
2000-08-14 21:45:59 +04:00
|
|
|
}
|
2002-06-12 18:56:22 +04:00
|
|
|
case OP_LT: {
|
2002-08-21 00:03:05 +04:00
|
|
|
if (luaV_lessthan(L, RKB(i), RKC(i)) != GETARG_A(i)) pc++;
|
2002-06-12 18:56:22 +04:00
|
|
|
else dojump(pc, GETARG_sBx(*pc) + 1);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case OP_LE: {
|
2002-08-21 00:03:05 +04:00
|
|
|
if (luaV_lessequal(L, RKB(i), RKC(i)) != GETARG_A(i)) pc++;
|
2002-05-09 18:14:34 +04:00
|
|
|
else dojump(pc, GETARG_sBx(*pc) + 1);
|
2000-03-09 16:57:37 +03:00
|
|
|
break;
|
2000-08-14 21:45:59 +04:00
|
|
|
}
|
2002-05-06 19:51:41 +04:00
|
|
|
case OP_TEST: {
|
2002-08-21 00:03:05 +04:00
|
|
|
TObject *rb = RB(i);
|
|
|
|
if (l_isfalse(rb) == GETARG_C(i)) pc++;
|
2002-05-09 18:14:34 +04:00
|
|
|
else {
|
2002-11-07 18:37:10 +03:00
|
|
|
setobjs2s(ra, rb);
|
2002-05-09 18:14:34 +04:00
|
|
|
dojump(pc, GETARG_sBx(*pc) + 1);
|
|
|
|
}
|
1997-09-16 23:25:59 +04:00
|
|
|
break;
|
2000-08-14 21:45:59 +04:00
|
|
|
}
|
2002-08-05 21:36:24 +04:00
|
|
|
case OP_CALL:
|
|
|
|
case OP_TAILCALL: {
|
2001-12-20 18:13:38 +03:00
|
|
|
StkId firstResult;
|
2001-06-05 22:17:01 +04:00
|
|
|
int b = GETARG_B(i);
|
2002-01-10 01:02:47 +03:00
|
|
|
int nresults;
|
|
|
|
if (b != 0) L->top = ra+b; /* else previous instruction set top */
|
|
|
|
nresults = GETARG_C(i) - 1;
|
2001-12-20 18:13:38 +03:00
|
|
|
firstResult = luaD_precall(L, ra);
|
|
|
|
if (firstResult) {
|
2002-01-26 01:14:54 +03:00
|
|
|
if (firstResult > L->top) { /* yield? */
|
2002-11-19 11:50:56 +03:00
|
|
|
lua_assert(L->ci->state == (CI_C | CI_YIELD));
|
2002-08-05 21:36:24 +04:00
|
|
|
(L->ci - 1)->u.l.savedpc = pc;
|
2002-11-19 11:50:56 +03:00
|
|
|
(L->ci - 1)->state = CI_SAVEDPC;
|
2002-01-10 01:02:47 +03:00
|
|
|
return NULL;
|
|
|
|
}
|
2001-12-20 18:13:38 +03:00
|
|
|
/* it was a C function (`precall' called it); adjust results */
|
2002-01-10 01:02:47 +03:00
|
|
|
luaD_poscall(L, nresults, firstResult);
|
|
|
|
if (nresults >= 0) L->top = L->ci->top;
|
2001-12-20 18:13:38 +03:00
|
|
|
}
|
2002-08-05 21:36:24 +04:00
|
|
|
else { /* it is a Lua function */
|
|
|
|
if (GET_OPCODE(i) == OP_CALL) { /* regular call? */
|
|
|
|
(L->ci-1)->u.l.savedpc = pc; /* save `pc' to return later */
|
2002-08-07 23:22:39 +04:00
|
|
|
(L->ci-1)->state = (CI_SAVEDPC | CI_CALLING);
|
2002-08-05 21:36:24 +04:00
|
|
|
}
|
|
|
|
else { /* tail call: put new frame in place of previous one */
|
|
|
|
int aux;
|
2002-11-21 18:46:44 +03:00
|
|
|
base = (L->ci - 1)->base; /* `luaD_precall' may change the stack */
|
|
|
|
ra = RA(i);
|
2002-08-05 21:36:24 +04:00
|
|
|
if (L->openupval) luaF_close(L, base);
|
2002-11-21 18:46:44 +03:00
|
|
|
for (aux = 0; ra+aux < L->top; aux++) /* move frame down */
|
|
|
|
setobjs2s(base+aux-1, ra+aux);
|
2002-08-05 21:36:24 +04:00
|
|
|
(L->ci - 1)->top = L->top = base+aux; /* correct top */
|
2002-08-07 23:22:39 +04:00
|
|
|
lua_assert(L->ci->state & CI_SAVEDPC);
|
2002-08-05 21:36:24 +04:00
|
|
|
(L->ci - 1)->u.l.savedpc = L->ci->u.l.savedpc;
|
2003-02-27 14:52:30 +03:00
|
|
|
(L->ci - 1)->u.l.tailcalls++; /* one more call lost */
|
2002-08-07 23:22:39 +04:00
|
|
|
(L->ci - 1)->state = CI_SAVEDPC;
|
2002-11-19 11:50:56 +03:00
|
|
|
L->ci--; /* remove new frame */
|
2002-11-21 18:16:04 +03:00
|
|
|
L->base = L->ci->base;
|
2002-08-05 21:36:24 +04:00
|
|
|
}
|
2002-03-25 20:47:14 +03:00
|
|
|
goto callentry;
|
2001-06-05 22:17:01 +04:00
|
|
|
}
|
1997-09-16 23:25:59 +04:00
|
|
|
break;
|
2000-08-14 21:45:59 +04:00
|
|
|
}
|
2001-06-05 22:17:01 +04:00
|
|
|
case OP_RETURN: {
|
2003-02-28 22:45:15 +03:00
|
|
|
CallInfo *ci = L->ci - 1; /* previous function frame */
|
2002-08-05 21:36:24 +04:00
|
|
|
int b = GETARG_B(i);
|
2002-01-10 01:02:47 +03:00
|
|
|
if (b != 0) L->top = ra+b-1;
|
2002-08-07 23:22:39 +04:00
|
|
|
lua_assert(L->ci->state & CI_HASFRAME);
|
2002-08-05 21:36:24 +04:00
|
|
|
if (L->openupval) luaF_close(L, base);
|
2002-08-07 23:22:39 +04:00
|
|
|
L->ci->state = CI_SAVEDPC; /* deactivate current function */
|
|
|
|
L->ci->u.l.savedpc = pc;
|
2002-07-16 18:26:56 +04:00
|
|
|
/* previous function was running `here'? */
|
2003-02-28 22:45:15 +03:00
|
|
|
if (!(ci->state & CI_CALLING)) {
|
|
|
|
lua_assert((ci->state & CI_C) || ci->u.l.pc != &pc);
|
2002-01-26 01:14:54 +03:00
|
|
|
return ra; /* no: return */
|
2003-02-28 22:45:15 +03:00
|
|
|
}
|
|
|
|
else { /* yes: continue its execution */
|
2002-01-10 01:02:47 +03:00
|
|
|
int nresults;
|
2003-02-28 22:45:15 +03:00
|
|
|
lua_assert(ci->u.l.pc == &pc &&
|
|
|
|
ttisfunction(ci->base - 1) &&
|
|
|
|
(ci->state & CI_SAVEDPC));
|
2002-08-07 18:24:24 +04:00
|
|
|
lua_assert(GET_OPCODE(*(ci->u.l.savedpc - 1)) == OP_CALL);
|
|
|
|
nresults = GETARG_C(*(ci->u.l.savedpc - 1)) - 1;
|
2002-01-10 01:02:47 +03:00
|
|
|
luaD_poscall(L, nresults, ra);
|
|
|
|
if (nresults >= 0) L->top = L->ci->top;
|
2002-03-25 20:47:14 +03:00
|
|
|
goto retentry;
|
2001-12-20 18:13:38 +03:00
|
|
|
}
|
2001-06-05 22:17:01 +04:00
|
|
|
}
|
2002-02-06 01:39:12 +03:00
|
|
|
case OP_FORLOOP: {
|
2003-05-14 00:15:59 +04:00
|
|
|
lua_Number step = nvalue(ra+2);
|
|
|
|
lua_Number idx = nvalue(ra) + step; /* increment index */
|
|
|
|
lua_Number limit = nvalue(ra+1);
|
|
|
|
if (step > 0 ? idx <= limit : idx >= limit) {
|
|
|
|
dojump(pc, GETARG_sBx(i)); /* jump back */
|
|
|
|
setnvalue(ra, idx); /* update internal index... */
|
|
|
|
setnvalue(ra+3, idx); /* ...and external index */
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case OP_FORPREP: {
|
|
|
|
const TObject *init = ra;
|
2002-03-05 00:33:09 +03:00
|
|
|
const TObject *plimit = ra+1;
|
|
|
|
const TObject *pstep = ra+2;
|
2003-05-14 00:15:59 +04:00
|
|
|
if (!tonumber(init, ra))
|
2002-05-15 22:57:44 +04:00
|
|
|
luaG_runerror(L, "`for' initial value must be a number");
|
2003-05-14 00:15:59 +04:00
|
|
|
else if (!tonumber(plimit, ra+1))
|
2002-05-15 22:57:44 +04:00
|
|
|
luaG_runerror(L, "`for' limit must be a number");
|
2003-05-14 00:15:59 +04:00
|
|
|
else if (!tonumber(pstep, ra+2))
|
2002-05-15 22:57:44 +04:00
|
|
|
luaG_runerror(L, "`for' step must be a number");
|
2003-05-14 00:15:59 +04:00
|
|
|
setnvalue(ra, nvalue(ra) - nvalue(pstep));
|
|
|
|
dojump(pc, GETARG_sBx(i));
|
2000-05-15 23:48:04 +04:00
|
|
|
break;
|
|
|
|
}
|
2001-06-05 22:17:01 +04:00
|
|
|
case OP_TFORLOOP: {
|
2003-05-14 00:15:59 +04:00
|
|
|
StkId cb = ra + 3; /* call base */
|
2002-12-06 20:09:00 +03:00
|
|
|
setobjs2s(cb+2, ra+2);
|
2003-05-14 00:15:59 +04:00
|
|
|
setobjs2s(cb+1, ra+1);
|
|
|
|
setobjs2s(cb, ra);
|
2002-12-06 20:09:00 +03:00
|
|
|
L->top = cb+3; /* func. + 2 args (state and index) */
|
2003-05-14 00:15:59 +04:00
|
|
|
luaD_call(L, cb, GETARG_C(i));
|
2002-04-09 23:47:44 +04:00
|
|
|
L->top = L->ci->top;
|
2003-05-14 00:15:59 +04:00
|
|
|
cb = XRA(i) + 3; /* previous call may change the stack */
|
|
|
|
if (ttisnil(cb)) /* break loop? */
|
2002-12-06 20:09:00 +03:00
|
|
|
pc++; /* skip jump (break loop) */
|
2003-05-14 00:15:59 +04:00
|
|
|
else {
|
|
|
|
setobjs2s(cb-1, cb); /* save control variable */
|
2002-12-06 20:09:00 +03:00
|
|
|
dojump(pc, GETARG_sBx(*pc) + 1); /* jump back */
|
2003-05-14 00:15:59 +04:00
|
|
|
}
|
2002-04-09 23:47:44 +04:00
|
|
|
break;
|
|
|
|
}
|
2002-07-05 22:27:39 +04:00
|
|
|
case OP_TFORPREP: { /* for compatibility only */
|
2002-08-05 21:36:24 +04:00
|
|
|
if (ttistable(ra)) {
|
2002-11-07 18:37:10 +03:00
|
|
|
setobjs2s(ra+1, ra);
|
|
|
|
setobj2s(ra, luaH_getstr(hvalue(gt(L)), luaS_new(L, "next")));
|
2000-05-15 23:48:04 +04:00
|
|
|
}
|
2002-05-13 17:09:00 +04:00
|
|
|
dojump(pc, GETARG_sBx(i));
|
2000-04-12 22:57:19 +04:00
|
|
|
break;
|
|
|
|
}
|
2001-06-05 22:17:01 +04:00
|
|
|
case OP_SETLIST:
|
|
|
|
case OP_SETLISTO: {
|
|
|
|
int bc;
|
|
|
|
int n;
|
2001-10-25 23:14:14 +04:00
|
|
|
Table *h;
|
2002-08-05 21:36:24 +04:00
|
|
|
runtime_check(L, ttistable(ra));
|
2001-06-05 22:17:01 +04:00
|
|
|
h = hvalue(ra);
|
2002-04-25 00:07:46 +04:00
|
|
|
bc = GETARG_Bx(i);
|
2001-06-05 22:17:01 +04:00
|
|
|
if (GET_OPCODE(i) == OP_SETLIST)
|
|
|
|
n = (bc&(LFIELDS_PER_FLUSH-1)) + 1;
|
2002-01-03 20:42:57 +03:00
|
|
|
else {
|
2001-06-05 22:17:01 +04:00
|
|
|
n = L->top - ra - 1;
|
2002-01-03 20:42:57 +03:00
|
|
|
L->top = L->ci->top;
|
|
|
|
}
|
2001-06-05 22:17:01 +04:00
|
|
|
bc &= ~(LFIELDS_PER_FLUSH-1); /* bc = bc - bc%FPF */
|
|
|
|
for (; n > 0; n--)
|
2002-11-14 19:15:53 +03:00
|
|
|
setobj2t(luaH_setnum(L, h, bc+n), ra+n); /* write barrier */
|
2001-06-05 22:17:01 +04:00
|
|
|
break;
|
|
|
|
}
|
2001-09-07 21:39:10 +04:00
|
|
|
case OP_CLOSE: {
|
|
|
|
luaF_close(L, ra);
|
|
|
|
break;
|
|
|
|
}
|
2000-08-14 21:45:59 +04:00
|
|
|
case OP_CLOSURE: {
|
2001-09-07 21:39:10 +04:00
|
|
|
Proto *p;
|
|
|
|
Closure *ncl;
|
|
|
|
int nup, j;
|
2002-04-25 00:07:46 +04:00
|
|
|
p = cl->p->p[GETARG_Bx(i)];
|
2003-02-11 13:46:24 +03:00
|
|
|
nup = p->nups;
|
2002-06-21 00:41:46 +04:00
|
|
|
ncl = luaF_newLclosure(L, nup, &cl->g);
|
2001-10-02 20:45:03 +04:00
|
|
|
ncl->l.p = p;
|
2001-09-07 21:39:10 +04:00
|
|
|
for (j=0; j<nup; j++, pc++) {
|
2001-10-02 20:45:03 +04:00
|
|
|
if (GET_OPCODE(*pc) == OP_GETUPVAL)
|
|
|
|
ncl->l.upvals[j] = cl->upvals[GETARG_B(*pc)];
|
2001-09-07 21:39:10 +04:00
|
|
|
else {
|
|
|
|
lua_assert(GET_OPCODE(*pc) == OP_MOVE);
|
2001-11-29 23:22:22 +03:00
|
|
|
ncl->l.upvals[j] = luaF_findupval(L, base + GETARG_B(*pc));
|
2001-09-07 21:39:10 +04:00
|
|
|
}
|
|
|
|
}
|
|
|
|
setclvalue(ra, ncl);
|
2002-11-21 17:18:01 +03:00
|
|
|
luaC_checkGC(L);
|
1997-09-16 23:25:59 +04:00
|
|
|
break;
|
2000-08-14 21:45:59 +04:00
|
|
|
}
|
1997-09-16 23:25:59 +04:00
|
|
|
}
|
2000-10-06 16:45:25 +04:00
|
|
|
}
|
1997-09-16 23:25:59 +04:00
|
|
|
}
|
2001-06-05 22:17:01 +04:00
|
|
|
|