#define lobject_c
#define LUA_CORE
#include "lprefix.h"
#include <locale.h>
#include <math.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "lua.h"
#include "lctype.h"
#include "ldebug.h"
#include "ldo.h"
#include "lmem.h"
#include "lobject.h"
#include "lstate.h"
#include "lstring.h"
#include "lvm.h"
LUAI_DDEF const TValue luaO_nilobject_ = {NILCONSTANT};
int luaO_int2fb (unsigned int x) {
int e = 0;
if (x < 8) return x;
while (x >= (8 << 4)) {
x = (x + 0xf) >> 4;
e += 4;
}
while (x >= (8 << 1)) {
x = (x + 1) >> 1;
e++;
}
return ((e+1) << 3) | (cast_int(x) - 8);
}
int luaO_fb2int (int x) {
int e = (x >> 3) & 0x1f;
if (e == 0) return x;
else return ((x & 7) + 8) << (e - 1);
}
int luaO_ceillog2 (unsigned int x) {
static const lu_byte log_2[256] = {
0,1,2,2,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8
};
int l = 0;
x--;
while (x >= 256) { l += 8; x >>= 8; }
return l + log_2[x];
}
static lua_Integer intarith (lua_State *L, int op, lua_Integer v1,
lua_Integer v2) {
switch (op) {
case LUA_OPADD: return intop(+, v1, v2);
case LUA_OPSUB:return intop(-, v1, v2);
case LUA_OPMUL:return intop(*, v1, v2);
case LUA_OPMOD: return luaV_mod(L, v1, v2);
case LUA_OPIDIV: return luaV_div(L, v1, v2);
case LUA_OPBAND: return intop(&, v1, v2);
case LUA_OPBOR: return intop(|, v1, v2);
case LUA_OPBXOR: return intop(^, v1, v2);
case LUA_OPSHL: return luaV_shiftl(v1, v2);
case LUA_OPSHR: return luaV_shiftl(v1, -v2);
case LUA_OPUNM: return intop(-, 0, v1);
case LUA_OPBNOT: return intop(^, ~l_castS2U(0), v1);
default: lua_assert(0); return 0;
}
}
static lua_Number numarith (lua_State *L, int op, lua_Number v1,
lua_Number v2) {
switch (op) {
case LUA_OPADD: return luai_numadd(L, v1, v2);
case LUA_OPSUB: return luai_numsub(L, v1, v2);
case LUA_OPMUL: return luai_nummul(L, v1, v2);
case LUA_OPDIV: return luai_numdiv(L, v1, v2);
case LUA_OPPOW: return luai_numpow(L, v1, v2);
case LUA_OPIDIV: return luai_numidiv(L, v1, v2);
case LUA_OPUNM: return luai_numunm(L, v1);
case LUA_OPMOD: {
lua_Number m;
luai_nummod(L, v1, v2, m);
return m;
}
default: lua_assert(0); return 0;
}
}
void luaO_arith (lua_State *L, int op, const TValue *p1, const TValue *p2,
TValue *res) {
switch (op) {
case LUA_OPBAND: case LUA_OPBOR: case LUA_OPBXOR:
case LUA_OPSHL: case LUA_OPSHR:
case LUA_OPBNOT: {
lua_Integer i1; lua_Integer i2;
if (tointeger(p1, &i1) && tointeger(p2, &i2)) {
setivalue(res, intarith(L, op, i1, i2));
return;
}
else break;
}
case LUA_OPDIV: case LUA_OPPOW: {
lua_Number n1; lua_Number n2;
if (tonumber(p1, &n1) && tonumber(p2, &n2)) {
setfltvalue(res, numarith(L, op, n1, n2));
return;
}
else break;
}
default: {
lua_Number n1; lua_Number n2;
if (ttisinteger(p1) && ttisinteger(p2)) {
setivalue(res, intarith(L, op, ivalue(p1), ivalue(p2)));
return;
}
else if (tonumber(p1, &n1) && tonumber(p2, &n2)) {
setfltvalue(res, numarith(L, op, n1, n2));
return;
}
else break;
}
}
lua_assert(L != NULL);
luaT_trybinTM(L, p1, p2, res, cast(TMS, (op - LUA_OPADD) + TM_ADD));
}
int luaO_hexavalue (int c) {
if (lisdigit(c)) return c - '0';
else return (ltolower(c) - 'a') + 10;
}
static int isneg (const char **s) {
if (**s == '-') { (*s)++; return 1; }
else if (**s == '+') (*s)++;
return 0;
}
#if !defined(lua_strx2number)
#define MAXSIGDIG 30
static lua_Number lua_strx2number (const char *s, char **endptr) {
int dot = lua_getlocaledecpoint();
lua_Number r = 0.0;
int sigdig = 0;
int nosigdig = 0;
int e = 0;
int neg;
int hasdot = 0;
*endptr = cast(char *, s);
while (lisspace(cast_uchar(*s))) s++;
neg = isneg(&s);
if (!(*s == '0' && (*(s + 1) == 'x' || *(s + 1) == 'X')))
return 0.0;
for (s += 2; ; s++) {
if (*s == dot) {
if (hasdot) break;
else hasdot = 1;
}
else if (lisxdigit(cast_uchar(*s))) {
if (sigdig == 0 && *s == '0')
nosigdig++;
else if (++sigdig <= MAXSIGDIG)
r = (r * cast_num(16.0)) + luaO_hexavalue(*s);
else e++;
if (hasdot) e--;
}
else break;
}
if (nosigdig + sigdig == 0)
return 0.0;
*endptr = cast(char *, s);
e *= 4;
if (*s == 'p' || *s == 'P') {
int exp1 = 0;
int neg1;
s++;
neg1 = isneg(&s);
if (!lisdigit(cast_uchar(*s)))
return 0.0;
while (lisdigit(cast_uchar(*s)))
exp1 = exp1 * 10 + *(s++) - '0';
if (neg1) exp1 = -exp1;
e += exp1;
*endptr = cast(char *, s);
}
if (neg) r = -r;
return l_mathop(ldexp)(r, e);
}
#endif
static const char *l_str2d (const char *s, lua_Number *result) {
char *endptr;
if (strpbrk(s, "nN"))
return NULL;
else if (strpbrk(s, "xX"))
*result = lua_strx2number(s, &endptr);
else
*result = lua_str2number(s, &endptr);
if (endptr == s) return NULL;
while (lisspace(cast_uchar(*endptr))) endptr++;
return (*endptr == '\0' ? endptr : NULL);
}
static const char *l_str2int (const char *s, lua_Integer *result) {
lua_Unsigned a = 0;
int empty = 1;
int neg;
while (lisspace(cast_uchar(*s))) s++;
neg = isneg(&s);
if (s[0] == '0' &&
(s[1] == 'x' || s[1] == 'X')) {
s += 2;
for (; lisxdigit(cast_uchar(*s)); s++) {
a = a * 16 + luaO_hexavalue(*s);
empty = 0;
}
}
else {
for (; lisdigit(cast_uchar(*s)); s++) {
a = a * 10 + *s - '0';
empty = 0;
}
}
while (lisspace(cast_uchar(*s))) s++;
if (empty || *s != '\0') return NULL;
else {
*result = l_castU2S((neg) ? 0u - a : a);
return s;
}
}
size_t luaO_str2num (const char *s, TValue *o) {
lua_Integer i; lua_Number n;
const char *e;
if ((e = l_str2int(s, &i)) != NULL) {
setivalue(o, i);
}
else if ((e = l_str2d(s, &n)) != NULL) {
setfltvalue(o, n);
}
else
return 0;
return (e - s) + 1;
}
int luaO_utf8esc (char *buff, unsigned long x) {
int n = 1;
lua_assert(x <= 0x10FFFF);
if (x < 0x80)
buff[UTF8BUFFSZ - 1] = cast(char, x);
else {
unsigned int mfb = 0x3f;
do {
buff[UTF8BUFFSZ - (n++)] = cast(char, 0x80 | (x & 0x3f));
x >>= 6;
mfb >>= 1;
} while (x > mfb);
buff[UTF8BUFFSZ - n] = cast(char, (~mfb << 1) | x);
}
return n;
}
#define MAXNUMBER2STR 50
void luaO_tostring (lua_State *L, StkId obj) {
char buff[MAXNUMBER2STR];
size_t len;
lua_assert(ttisnumber(obj));
if (ttisinteger(obj))
len = lua_integer2str(buff, ivalue(obj));
else {
len = lua_number2str(buff, fltvalue(obj));
#if !defined(LUA_COMPAT_FLOATSTRING)
if (buff[strspn(buff, "-0123456789")] == '\0') {
buff[len++] = lua_getlocaledecpoint();
buff[len++] = '0';
}
#endif
}
setsvalue2s(L, obj, luaS_newlstr(L, buff, len));
}
static void pushstr (lua_State *L, const char *str, size_t l) {
setsvalue2s(L, L->top++, luaS_newlstr(L, str, l));
}
const char *luaO_pushvfstring (lua_State *L, const char *fmt, va_list argp) {
int n = 0;
for (;;) {
const char *e = strchr(fmt, '%');
if (e == NULL) break;
luaD_checkstack(L, 2);
pushstr(L, fmt, e - fmt);
switch (*(e+1)) {
case 's': {
const char *s = va_arg(argp, char *);
if (s == NULL) s = "(null)";
pushstr(L, s, strlen(s));
break;
}
case 'c': {
char buff = cast(char, va_arg(argp, int));
if (lisprint(cast_uchar(buff)))
pushstr(L, &buff, 1);
else
luaO_pushfstring(L, "<\\%d>", cast_uchar(buff));
break;
}
case 'd': {
setivalue(L->top++, va_arg(argp, int));
luaO_tostring(L, L->top - 1);
break;
}
case 'I': {
setivalue(L->top++, cast(lua_Integer, va_arg(argp, l_uacInt)));
luaO_tostring(L, L->top - 1);
break;
}
case 'f': {
setfltvalue(L->top++, cast_num(va_arg(argp, l_uacNumber)));
luaO_tostring(L, L->top - 1);
break;
}
case 'p': {
char buff[4*sizeof(void *) + 8];
int l = sprintf(buff, "%p", va_arg(argp, void *));
pushstr(L, buff, l);
break;
}
case 'U': {
char buff[UTF8BUFFSZ];
int l = luaO_utf8esc(buff, cast(long, va_arg(argp, long)));
pushstr(L, buff + UTF8BUFFSZ - l, l);
break;
}
case '%': {
pushstr(L, "%", 1);
break;
}
default: {
luaG_runerror(L, "invalid option '%%%c' to 'lua_pushfstring'",
*(e + 1));
}
}
n += 2;
fmt = e+2;
}
luaD_checkstack(L, 1);
pushstr(L, fmt, strlen(fmt));
if (n > 0) luaV_concat(L, n + 1);
return svalue(L->top - 1);
}
const char *luaO_pushfstring (lua_State *L, const char *fmt, ...) {
const char *msg;
va_list argp;
va_start(argp, fmt);
msg = luaO_pushvfstring(L, fmt, argp);
va_end(argp);
return msg;
}
#define LL(x) (sizeof(x)/sizeof(char) - 1)
#define RETS "..."
#define PRE "[string \""
#define POS "\"]"
#define addstr(a,b,l) ( memcpy(a,b,(l) * sizeof(char)), a += (l) )
void luaO_chunkid (char *out, const char *source, size_t bufflen) {
size_t l = strlen(source);
if (*source == '=') {
if (l <= bufflen)
memcpy(out, source + 1, l * sizeof(char));
else {
addstr(out, source + 1, bufflen - 1);
*out = '\0';
}
}
else if (*source == '@') {
if (l <= bufflen)
memcpy(out, source + 1, l * sizeof(char));
else {
addstr(out, RETS, LL(RETS));
bufflen -= LL(RETS);
memcpy(out, source + 1 + l - bufflen, bufflen * sizeof(char));
}
}
else {
const char *nl = strchr(source, '\n');
addstr(out, PRE, LL(PRE));
bufflen -= LL(PRE RETS POS) + 1;
if (l < bufflen && nl == NULL) {
addstr(out, source, l);
}
else {
if (nl != NULL) l = nl - source;
if (l > bufflen) l = bufflen;
addstr(out, source, l);
addstr(out, RETS, LL(RETS));
}
memcpy(out, POS, (LL(POS) + 1) * sizeof(char));
}
}