mirror of
https://github.com/lua/lua.git
synced 2024-11-24 02:33:48 +08:00
446 lines
11 KiB
C
446 lines
11 KiB
C
/*
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** $Id: ltests.c,v 1.32 2000/08/08 20:42:07 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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#define LUA_SINGLESTATE
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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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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_Object t, const char *name, int val) {
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lua_pushobject(t);
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lua_pushstring(name);
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lua_pushnumber(val);
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lua_settable();
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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 (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(buff);
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return (o != OP_END);
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}
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static void listcode (void) {
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lua_Object o = luaL_nonnullarg(1);
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lua_Object t = lua_createtable();
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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(ttype(o) == TAG_LCLOSURE, 1, "Lua function expected");
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p = clvalue(o)->f.l;
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setnameval(t, "maxstack", p->maxstacksize);
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setnameval(t, "numparams", p->numparams);
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pc = 0;
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do {
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lua_pushobject(t);
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lua_pushnumber(pc+1);
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res = pushop(p, pc++);
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lua_settable();
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} while (res);
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lua_pushobject(t);
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}
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static void liststrings (void) {
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lua_Object o = luaL_nonnullarg(1);
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lua_Object t = lua_createtable();
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Proto *p;
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int i;
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luaL_arg_check(ttype(o) == TAG_LCLOSURE, 1, "Lua function expected");
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p = clvalue(o)->f.l;
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for (i=0; i<p->nkstr; i++) {
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lua_pushobject(t);
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lua_pushnumber(i+1);
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lua_pushstring(p->kstr[i]->str);
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lua_settable();
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}
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lua_pushobject(t);
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}
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static void listlocals (void) {
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lua_Object o = luaL_nonnullarg(1);
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Proto *p;
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int pc = luaL_check_int(2) - 1;
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int i = 1;
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const char *name;
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luaL_arg_check(ttype(o) == TAG_LCLOSURE, 1, "Lua function expected");
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p = clvalue(o)->f.l;
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while ((name = luaF_getlocalname(p, i++, pc)) != NULL)
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lua_pushstring(name);
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}
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/* }====================================================== */
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static void get_limits (void) {
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lua_Object t = lua_createtable();
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setnameval(t, "BITS_INT", BITS_INT);
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setnameval(t, "LFPF", LFIELDS_PER_FLUSH);
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setnameval(t, "MAXARG_A", MAXARG_A);
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setnameval(t, "MAXARG_B", MAXARG_B);
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setnameval(t, "MAXARG_S", MAXARG_S);
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setnameval(t, "MAXARG_U", MAXARG_U);
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setnameval(t, "MAXLOCALS", MAXLOCALS);
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setnameval(t, "MAXPARAMS", MAXPARAMS);
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setnameval(t, "MAXSTACK", MAXSTACK);
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setnameval(t, "MAXUPVALUES", MAXUPVALUES);
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setnameval(t, "MAXVARSLH", MAXVARSLH);
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setnameval(t, "RFPF", RFIELDS_PER_FLUSH);
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setnameval(t, "SIZE_A", SIZE_A);
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setnameval(t, "SIZE_B", SIZE_B);
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setnameval(t, "SIZE_OP", SIZE_OP);
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setnameval(t, "SIZE_U", SIZE_U);
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lua_pushobject(t);
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}
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static void mem_query (void) {
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lua_Object arg = lua_getparam(1);
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if (arg == LUA_NOOBJECT) {
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lua_pushnumber(memdebug_total);
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lua_pushnumber(memdebug_numblocks);
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lua_pushnumber(memdebug_maxmem);
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}
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else
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memdebug_memlimit = luaL_check_int(1);
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}
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static void hash_query (void) {
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lua_Object o = luaL_nonnullarg(1);
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if (lua_getparam(2) == LUA_NOOBJECT) {
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luaL_arg_check(ttype(o) == TAG_STRING, 1, "string expected");
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lua_pushnumber(tsvalue(o)->u.s.hash);
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}
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else {
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const Hash *t = hvalue(luaL_tablearg(2));
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lua_pushnumber(luaH_mainposition(t, o) - t->node);
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}
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}
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static void table_query (void) {
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const Hash *t = hvalue(luaL_tablearg(1));
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int i = luaL_opt_int(2, -1);
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if (i == -1) {
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lua_pushnumber(t->size);
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lua_pushnumber(t->firstfree - t->node);
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}
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else if (i < t->size) {
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luaA_pushobject(lua_state, &t->node[i].key);
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luaA_pushobject(lua_state, &t->node[i].val);
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if (t->node[i].next)
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lua_pushnumber(t->node[i].next - t->node);
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}
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}
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static void string_query (void) {
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lua_State *L = lua_state;
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stringtable *tb = (*luaL_check_string(1) == 's') ? &L->strt : &L->udt;
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int s = luaL_opt_int(2, 0) - 1;
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if (s==-1) {
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lua_pushnumber(tb->nuse);
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lua_pushnumber(tb->size);
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}
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else if (s < tb->size) {
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TString *ts;
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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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}
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}
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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 (const char **pc) {
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int res = 0;
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skip(pc);
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while (isdigit(**pc)) res = res*10 + (*(*pc)++) - '0';
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return res;
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}
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static int getreg (const char **pc) {
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skip(pc);
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if (*(*pc)++ != 'r') lua_error("`testC' expecting a register");
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return getnum(pc);
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}
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static const char *getname (const char **pc) {
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static char buff[30];
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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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static void testC (void) {
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lua_Object reg[10];
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const char *pc = luaL_check_string(1);
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for (;;) {
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const char *inst = getname(&pc);
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if EQ("") return;
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else if EQ("pushnum") {
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lua_pushnumber(getnum(&pc));
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}
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else if EQ("createtable") {
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reg[getreg(&pc)] = lua_createtable();
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}
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else if EQ("closure") {
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lua_CFunction f = lua_getcfunction(lua_getglobal(getname(&pc)));
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lua_pushcclosure(f, getnum(&pc));
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}
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else if EQ("pop") {
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reg[getreg(&pc)] = lua_pop();
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}
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else if EQ("getglobal") {
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int n = getreg(&pc);
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reg[n] = lua_getglobal(getname(&pc));
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}
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else if EQ("ref") {
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lua_pushnumber(lua_ref(0));
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reg[getreg(&pc)] = lua_pop();
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}
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else if EQ("reflock") {
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lua_pushnumber(lua_ref(1));
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reg[getreg(&pc)] = lua_pop();
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}
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else if EQ("getref") {
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int n = getreg(&pc);
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reg[n] = lua_getref((int)lua_getnumber(reg[getreg(&pc)]));
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}
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else if EQ("unref") {
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lua_unref((int)lua_getnumber(reg[getreg(&pc)]));
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}
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else if EQ("getparam") {
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int n = getreg(&pc);
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reg[n] = lua_getparam(getnum(&pc)+1); /* skips the command itself */
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}
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else if EQ("getresult") {
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int n = getreg(&pc);
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reg[n] = lua_getparam(getnum(&pc));
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}
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else if EQ("setglobal") {
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lua_setglobal(getname(&pc));
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}
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else if EQ("pushglobals") {
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lua_pushglobaltable();
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}
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else if EQ("pushstring") {
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lua_pushstring(getname(&pc));
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}
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else if EQ("pushreg") {
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lua_pushobject(reg[getreg(&pc)]);
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}
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else if EQ("call") {
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if (lua_call(getname(&pc))) lua_error(NULL);
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}
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else if EQ("gettable") {
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reg[getreg(&pc)] = lua_gettable();
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}
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else if EQ("rawget") {
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reg[getreg(&pc)] = lua_rawget();
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}
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else if EQ("settable") {
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lua_settable();
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}
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else if EQ("rawset") {
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lua_rawset();
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}
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else if EQ("tag") {
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lua_pushnumber(lua_tag(reg[getreg(&pc)]));
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}
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else if EQ("type") {
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lua_pushstring(lua_type(reg[getreg(&pc)]));
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}
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else if EQ("next") {
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int n = getreg(&pc);
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n = lua_next(reg[n], (int)lua_getnumber(reg[getreg(&pc)]));
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lua_pushnumber(n);
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}
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else if EQ("equal") {
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int n1 = getreg(&pc);
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int n2 = getreg(&pc);
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lua_pushnumber(lua_equal(reg[n1], reg[n2]));
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}
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else if EQ("pushusertag") {
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int val = getreg(&pc);
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int tag = getreg(&pc);
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lua_pushusertag((void *)(int)lua_getnumber(reg[val]),
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(int)lua_getnumber(reg[tag]));
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}
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else if EQ("udataval") {
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int n = getreg(&pc);
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lua_pushnumber((int)lua_getuserdata(reg[getreg(&pc)]));
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reg[n] = lua_pop();
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}
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else if EQ("settagmethod") {
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int n = getreg(&pc);
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lua_settagmethod((int)lua_getnumber(reg[n]), getname(&pc));
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}
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else if EQ("beginblock") {
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lua_beginblock();
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}
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else if EQ("endblock") {
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lua_endblock();
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}
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else if EQ("newstate") {
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int stacksize = getnum(&pc);
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lua_State *L1 = lua_newstate(stacksize, getnum(&pc));
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if (L1)
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lua_pushuserdata(L1);
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else
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lua_pushnil();
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}
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else if EQ("closestate") {
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(lua_close)((lua_State *)lua_getuserdata(reg[getreg(&pc)]));
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}
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else if EQ("doremote") {
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lua_Object ol1 = reg[getreg(&pc)];
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lua_Object str = reg[getreg(&pc)];
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lua_State *L1;
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lua_Object temp;
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int status;
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if (!lua_isuserdata(ol1) || !lua_isstring(str))
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lua_error("bad arguments for `doremote'");
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L1 = (lua_State *)lua_getuserdata(ol1);
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status = (lua_dostring)(L1, lua_getstring(str));
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if (status != 0) {
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lua_pushnil();
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lua_pushnumber(status);
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}
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else {
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int i = 1;
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while ((temp = (lua_getresult)(L1, i++)) != LUA_NOOBJECT)
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lua_pushstring((lua_getstring)(L1, temp));
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}
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}
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#if LUA_DEPRECATETFUNCS
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else if EQ("rawsetglobal") {
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lua_rawsetglobal(getname(&pc));
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}
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else if EQ("rawgetglobal") {
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int n = getreg(&pc);
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reg[n] = lua_rawgetglobal(getname(&pc));
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}
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#endif
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else luaL_verror(lua_state, "unknown command in `testC': %.20s", inst);
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}
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}
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/* }====================================================== */
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static const struct luaL_reg tests_funcs[] = {
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{"hash", (lua_CFunction)hash_query},
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{"limits", (lua_CFunction)get_limits},
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{"listcode", (lua_CFunction)listcode},
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{"liststrings", (lua_CFunction)liststrings},
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{"listlocals", (lua_CFunction)listlocals},
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{"querystr", (lua_CFunction)string_query},
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{"querytab", (lua_CFunction)table_query},
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{"testC", (lua_CFunction)testC},
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{"totalmem", (lua_CFunction)mem_query}
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};
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void luaB_opentests (lua_State *L) {
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if (lua_state != NULL) return; /* do not open tests for auxiliar states */
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lua_state = L;
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luaL_openl(tests_funcs);
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}
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#endif
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