mirror of
https://github.com/lua/lua
synced 2024-11-26 06:39:41 +03:00
485 lines
11 KiB
C
485 lines
11 KiB
C
/*
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** $Id: ltests.c,v 1.43 2000/09/25 14:48:42 roberto Exp roberto $
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** Internal Module for Debugging of the Lua Implementation
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** See Copyright Notice in lua.h
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*/
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#include <ctype.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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#include "lua.h"
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#include "lapi.h"
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#include "lauxlib.h"
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#include "lcode.h"
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#include "ldebug.h"
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#include "ldo.h"
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#include "lfunc.h"
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#include "lmem.h"
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#include "lopcodes.h"
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#include "lstate.h"
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#include "lstring.h"
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#include "ltable.h"
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#include "luadebug.h"
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#include "lualib.h"
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void luaB_opentests (lua_State *L);
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/*
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** The whole module only makes sense with DEBUG on
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*/
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#ifdef DEBUG
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static void setnameval (lua_State *L, const char *name, int val) {
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lua_pushstring(L, name);
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lua_pushnumber(L, val);
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lua_settable(L, -3);
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}
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/*
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** {======================================================
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** Disassembler
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** =======================================================
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*/
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static const char *const instrname[NUM_OPCODES] = {
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"END", "RETURN", "CALL", "TAILCALL", "PUSHNIL", "POP", "PUSHINT",
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"PUSHSTRING", "PUSHNUM", "PUSHNEGNUM", "PUSHUPVALUE", "GETLOCAL",
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"GETGLOBAL", "GETTABLE", "GETDOTTED", "GETINDEXED", "PUSHSELF",
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"CREATETABLE", "SETLOCAL", "SETGLOBAL", "SETTABLE", "SETLIST", "SETMAP",
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"ADD", "ADDI", "SUB", "MULT", "DIV", "POW", "CONCAT", "MINUS", "NOT",
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"JMPNE", "JMPEQ", "JMPLT", "JMPLE", "JMPGT", "JMPGE", "JMPT", "JMPF",
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"JMPONT", "JMPONF", "JMP", "PUSHNILJMP", "FORPREP", "FORLOOP", "LFORPREP",
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"LFORLOOP", "CLOSURE"
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};
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static int pushop (lua_State *L, Proto *p, int pc) {
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char buff[100];
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Instruction i = p->code[pc];
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OpCode o = GET_OPCODE(i);
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const char *name = instrname[o];
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sprintf(buff, "%5d - ", luaG_getline(p->lineinfo, pc, 1, NULL));
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switch ((enum Mode)luaK_opproperties[o].mode) {
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case iO:
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sprintf(buff+8, "%s", name);
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break;
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case iU:
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sprintf(buff+8, "%-12s%4u", name, GETARG_U(i));
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break;
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case iS:
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sprintf(buff+8, "%-12s%4d", name, GETARG_S(i));
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break;
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case iAB:
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sprintf(buff+8, "%-12s%4d %4d", name, GETARG_A(i), GETARG_B(i));
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break;
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}
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lua_pushstring(L, buff);
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return (o != OP_END);
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}
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static int listcode (lua_State *L) {
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int pc;
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Proto *p;
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int res;
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luaL_arg_check(L, lua_tag(L, 1) == TAG_LCLOSURE, 1, "Lua function expected");
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p = clvalue(luaA_index(L, 1))->f.l;
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lua_newtable(L);
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setnameval(L, "maxstack", p->maxstacksize);
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setnameval(L, "numparams", p->numparams);
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pc = 0;
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do {
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lua_pushnumber(L, pc+1);
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res = pushop(L, p, pc++);
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lua_settable(L, -3);
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} while (res);
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return 1;
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}
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static int liststrings (lua_State *L) {
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Proto *p;
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int i;
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luaL_arg_check(L, lua_tag(L, 1) == TAG_LCLOSURE, 1, "Lua function expected");
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p = clvalue(luaA_index(L, 1))->f.l;
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lua_newtable(L);
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for (i=0; i<p->nkstr; i++) {
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lua_pushnumber(L, i+1);
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lua_pushstring(L, p->kstr[i]->str);
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lua_settable(L, -3);
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}
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return 1;
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}
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static int listlocals (lua_State *L) {
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Proto *p;
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int pc = luaL_check_int(L, 2) - 1;
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int i = 0;
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const char *name;
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luaL_arg_check(L, lua_tag(L, 1) == TAG_LCLOSURE, 1, "Lua function expected");
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p = clvalue(luaA_index(L, 1))->f.l;
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while ((name = luaF_getlocalname(p, ++i, pc)) != NULL)
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lua_pushstring(L, name);
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return i-1;
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}
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/* }====================================================== */
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static int get_limits (lua_State *L) {
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lua_newtable(L);
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setnameval(L, "BITS_INT", BITS_INT);
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setnameval(L, "LFPF", LFIELDS_PER_FLUSH);
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setnameval(L, "MAXARG_A", MAXARG_A);
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setnameval(L, "MAXARG_B", MAXARG_B);
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setnameval(L, "MAXARG_S", MAXARG_S);
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setnameval(L, "MAXARG_U", MAXARG_U);
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setnameval(L, "MAXLOCALS", MAXLOCALS);
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setnameval(L, "MAXPARAMS", MAXPARAMS);
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setnameval(L, "MAXSTACK", MAXSTACK);
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setnameval(L, "MAXUPVALUES", MAXUPVALUES);
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setnameval(L, "MAXVARSLH", MAXVARSLH);
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setnameval(L, "RFPF", RFIELDS_PER_FLUSH);
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setnameval(L, "SIZE_A", SIZE_A);
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setnameval(L, "SIZE_B", SIZE_B);
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setnameval(L, "SIZE_OP", SIZE_OP);
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setnameval(L, "SIZE_U", SIZE_U);
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return 1;
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}
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static int mem_query (lua_State *L) {
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if (lua_isnull(L, 1)) {
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lua_pushnumber(L, memdebug_total);
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lua_pushnumber(L, memdebug_numblocks);
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lua_pushnumber(L, memdebug_maxmem);
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return 3;
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}
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else {
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memdebug_memlimit = luaL_check_int(L, 1);
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return 0;
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}
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}
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static int hash_query (lua_State *L) {
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if (lua_isnull(L, 2)) {
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luaL_arg_check(L, lua_tag(L, 1) == TAG_STRING, 1, "string expected");
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lua_pushnumber(L, tsvalue(luaA_index(L, 1))->u.s.hash);
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}
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else {
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Hash *t;
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luaL_checktype(L, 2, "table");
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t = hvalue(luaA_index(L, 2));
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lua_pushnumber(L, luaH_mainposition(t, luaA_index(L, 1)) - t->node);
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}
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return 1;
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}
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static int table_query (lua_State *L) {
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const Hash *t;
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int i = luaL_opt_int(L, 2, -1);
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luaL_checktype(L, 1, "table");
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t = hvalue(luaA_index(L, 1));
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if (i == -1) {
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lua_pushnumber(L, t->size);
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lua_pushnumber(L, t->firstfree - t->node);
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return 2;
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}
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else if (i < t->size) {
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luaA_pushobject(L, &t->node[i].key);
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luaA_pushobject(L, &t->node[i].val);
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if (t->node[i].next) {
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lua_pushnumber(L, t->node[i].next - t->node);
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return 3;
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}
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else
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return 2;
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}
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return 0;
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}
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static int string_query (lua_State *L) {
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stringtable *tb = (*luaL_check_string(L, 1) == 's') ? &L->strt : &L->udt;
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int s = luaL_opt_int(L, 2, 0) - 1;
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if (s==-1) {
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lua_pushnumber(L ,tb->nuse);
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lua_pushnumber(L ,tb->size);
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return 2;
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}
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else if (s < tb->size) {
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TString *ts;
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int n = 0;
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for (ts = tb->hash[s]; ts; ts = ts->nexthash) {
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ttype(L->top) = TAG_STRING;
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tsvalue(L->top) = ts;
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incr_top;
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n++;
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}
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return n;
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}
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return 0;
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}
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static int tref (lua_State *L) {
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luaL_checktype(L, 1, "any");
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lua_pushvalue(L, 1);
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lua_pushnumber(L, lua_ref(L, luaL_opt_int(L, 2, 1)));
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return 1;
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}
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static int getref (lua_State *L) {
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if (lua_getref(L, luaL_check_int(L, 1)))
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return 1;
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else
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return 0;
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}
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static int unref (lua_State *L) {
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lua_unref(L, luaL_check_int(L, 1));
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return 0;
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}
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static int newuserdata (lua_State *L) {
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lua_pushusertag(L, (void *)luaL_check_int(L, 1), luaL_check_int(L, 2));
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return 1;
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}
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static int udataval (lua_State *L) {
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luaL_checktype(L, 1, "userdata");
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lua_pushnumber(L, (int)lua_touserdata(L, 1));
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return 1;
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}
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static int newstate (lua_State *L) {
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lua_State *L1 = lua_open(luaL_check_int(L, 1));
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if (L1)
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lua_pushuserdata(L, L1);
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else
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lua_pushnil(L);
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return 1;
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}
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static int loadlib (lua_State *L) {
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lua_State *L1 = (lua_State *)lua_touserdata(L, 1);
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switch (*luaL_check_string(L, 2)) {
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case 'm': lua_mathlibopen(L1); break;
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case 's': lua_strlibopen(L1); break;
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case 'i': lua_iolibopen(L1); break;
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case 'd': lua_dblibopen(L1); break;
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case 'b': lua_baselibopen(L1); break;
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default: luaL_argerror(L, 2, "invalid option");
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}
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return 0;
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}
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static int closestate (lua_State *L) {
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luaL_checktype(L, 1, "userdata");
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lua_close((lua_State *)lua_touserdata(L, 1));
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return 0;
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}
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static int doremote (lua_State *L) {
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lua_State *L1;
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const char *code = luaL_check_string(L, 2);
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int status;
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luaL_checktype(L, 1, "userdata");
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L1 = (lua_State *)lua_touserdata(L, 1);
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status = lua_dostring(L1, code);
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if (status != 0) {
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lua_pushnil(L);
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lua_pushnumber(L, status);
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return 2;
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}
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else {
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int i = 0;
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while (!lua_isnull(L1, ++i))
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lua_pushstring(L, lua_tostring(L1, i));
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return i-1;
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}
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}
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static int settagmethod (lua_State *L) {
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luaL_checktype(L, 3, "any");
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lua_settagmethod(L, luaL_check_int(L, 1), luaL_check_string(L, 2));
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return 1;
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}
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static int pushbool (lua_State *L, int b) {
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if (b) lua_pushnumber(L, 1);
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else lua_pushnil(L);
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return 1;
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}
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static int equal (lua_State *L) {
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return pushbool(L, lua_equal(L, 1, 2));
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}
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/*
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** {======================================================
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** function to test the API with C. It interprets a kind of "assembler"
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** language with calls to the API, so the test can be driven by Lua code
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** =======================================================
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*/
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static const char *const delimits = " \t\n,;";
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static void skip (const char **pc) {
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while (**pc != '\0' && strchr(delimits, **pc)) (*pc)++;
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}
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static int getnum (lua_State *L, const char **pc) {
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int res = 0;
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int sig = 1;
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skip(pc);
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if (**pc == '.') {
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res = (int)lua_tonumber(L, -1);
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lua_pop(L, 1);
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(*pc)++;
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return res;
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}
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else if (**pc == '-') {
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sig = -1;
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(*pc)++;
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}
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while (isdigit(**pc)) res = res*10 + (*(*pc)++) - '0';
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return sig*res;
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}
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static const char *getname (char *buff, const char **pc) {
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int i = 0;
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skip(pc);
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while (**pc != '\0' && !strchr(delimits, **pc))
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buff[i++] = *(*pc)++;
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buff[i] = '\0';
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return buff;
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}
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#define EQ(s1) (strcmp(s1, inst) == 0)
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#define getnum ((getnum)(L, &pc))
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#define getname ((getname)(buff, &pc))
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static int testC (lua_State *L) {
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char buff[30];
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const char *pc = luaL_check_string(L, 1);
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for (;;) {
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const char *inst = getname;
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if EQ("") return 0;
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else if EQ("return") {
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return getnum;
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}
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else if EQ("gettop") {
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lua_pushnumber(L, lua_gettop(L));
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}
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else if EQ("settop") {
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lua_settop(L, getnum);
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}
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else if EQ("pop") {
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lua_pop(L, getnum);
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}
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else if EQ("pushnum") {
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lua_pushnumber(L, getnum);
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}
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else if EQ("pushvalue") {
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lua_pushvalue(L, getnum);
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}
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else if EQ("remove") {
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lua_remove(L, getnum);
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}
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else if EQ("insert") {
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lua_insert(L, getnum);
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}
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else if EQ("gettable") {
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lua_gettable(L, getnum);
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}
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else if EQ("settable") {
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lua_settable(L, getnum);
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}
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else if EQ("next") {
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lua_next(L, -2);
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}
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else if EQ("concat") {
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lua_concat(L, getnum);
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}
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else if EQ("rawcall") {
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int narg = getnum;
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int nres = getnum;
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lua_rawcall(L, narg, nres);
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}
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else if EQ("call") {
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int narg = getnum;
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int nres = getnum;
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lua_call(L, narg, nres);
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}
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else if EQ("dostring") {
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lua_dostring(L, luaL_check_string(L, getnum));
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}
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else if EQ("type") {
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lua_pushstring(L, lua_type(L, getnum));
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}
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else luaL_verror(L, "unknown instruction %.30s", buff);
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}
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return 0;
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}
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/* }====================================================== */
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static const struct luaL_reg tests_funcs[] = {
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{"hash", hash_query},
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{"limits", get_limits},
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{"listcode", listcode},
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{"liststrings", liststrings},
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{"listlocals", listlocals},
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{"loadlib", loadlib},
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{"querystr", string_query},
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{"querytab", table_query},
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{"testC", testC},
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{"ref", tref},
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{"getref", getref},
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{"unref", unref},
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{"newuserdata", newuserdata},
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{"udataval", udataval},
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{"newstate", newstate},
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{"closestate", closestate},
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{"doremote", doremote},
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{"settagmethod", settagmethod},
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{"equal", equal},
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{"totalmem", mem_query}
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};
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void luaB_opentests (lua_State *L) {
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lua_newtable(L);
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lua_getglobals(L);
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lua_pushvalue(L, -2);
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lua_setglobals(L);
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luaL_openl(L, tests_funcs); /* open functions inside new table */
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lua_setglobals(L); /* restore old table of globals */
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lua_setglobal(L, "T"); /* set new table as global T */
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}
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#endif
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