void FParser::OPdivide(svalue_t &result, int start, int n, int stop)
{
svalue_t left, right;
evaluate_leftnright(start, n, stop);
// haleyjd: 8-17
if(left.type == svt_fixed || right.type == svt_fixed)
{
auto fr = floatvalue(right);
if(fr == 0)
script_error("divide by zero\n");
else
{
result.setDouble(floatvalue(left) / fr);
}
}
else
{
auto ir = intvalue(right);
if(!ir)
script_error("divide by zero\n");
else
{
result.type = svt_int;
result.value.i = intvalue(left) / ir;
}
}
}
void FParser::OPdecrement(svalue_t &result, int start, int n, int stop)
{
if(start == n) // ++n
{
DFsVariable *var;
var = Script->FindVariable(Tokens[stop]);
if(!var)
{
script_error("unknown variable '%s'\n", Tokens[stop]);
}
var->GetValue(result);
// haleyjd
if(var->type != svt_fixed)
{
result.value.i = intvalue(result) - 1;
result.type = svt_int;
var->SetValue (result);
}
else
{
result.setDouble(floatvalue(result)-1);
result.type = svt_fixed;
var->SetValue (result);
}
}
else if(stop == n) // n++
{
svalue_t newvalue;
DFsVariable *var;
var = Script->FindVariable(Tokens[start]);
if(!var)
{
script_error("unknown variable '%s'\n", Tokens[start]);
}
var->GetValue(result);
// haleyjd
if(var->type != svt_fixed)
{
newvalue.type = svt_int;
newvalue.value.i = intvalue(result) - 1;
var->SetValue (newvalue);
}
else
{
newvalue.setDouble(floatvalue(result)-1);
var->SetValue (newvalue);
}
}
else
{
script_error("incorrect arguments to ++ operator\n");
}
}
static int numeric_equal(const SpnValue *lhs, const SpnValue *rhs)
{
assert(isnum(lhs) && isnum(rhs));
if (isfloat(lhs)) {
return isfloat(rhs) ? floatvalue(lhs) == floatvalue(rhs)
: floatvalue(lhs) == intvalue(rhs);
} else {
return isfloat(rhs) ? intvalue(lhs) == floatvalue(rhs)
: intvalue(lhs) == intvalue(rhs);
}
}
static int numeric_compare(const SpnValue *lhs, const SpnValue *rhs)
{
assert(isnum(lhs) && isnum(rhs));
if (isfloat(lhs)) {
if (isfloat(rhs)) {
return floatvalue(lhs) < floatvalue(rhs) ? -1
: floatvalue(lhs) > floatvalue(rhs) ? +1
: 0;
} else {
return floatvalue(lhs) < intvalue(rhs) ? -1
: floatvalue(lhs) > intvalue(rhs) ? +1
: 0;
}
} else {
if (isfloat(rhs)) {
return intvalue(lhs) < floatvalue(rhs) ? -1
: intvalue(lhs) > floatvalue(rhs) ? +1
: 0;
} else {
return intvalue(lhs) < intvalue(rhs) ? -1
: intvalue(lhs) > intvalue(rhs) ? +1
: 0;
}
}
}
void FParser::OPplus(svalue_t &result, int start, int n, int stop)
{
svalue_t left, right;
evaluate_leftnright(start, n, stop);
if (left.type == svt_string)
{
if (right.type == svt_string)
{
result.string.Format("%s%s", left.string.GetChars(), right.string.GetChars());
}
else if (right.type == svt_fixed)
{
result.string.Format("%s%4.4f", left.string.GetChars(), floatvalue(right));
}
else
{
result.string.Format("%s%i", left.string.GetChars(), intvalue(right));
}
result.type = svt_string;
}
// haleyjd: 8-17
else if(left.type == svt_fixed || right.type == svt_fixed)
{
result.type = svt_fixed;
result.value.f = fixedvalue(left) + fixedvalue(right);
}
else
{
result.type = svt_int;
result.value.i = intvalue(left) + intvalue(right);
}
}
void FParser::OPmultiply(svalue_t &result,int start, int n, int stop)
{
svalue_t left, right;
evaluate_leftnright(start, n, stop);
// haleyjd: 8-17
if(left.type == svt_fixed || right.type == svt_fixed)
{
result.setDouble(floatvalue(left) * floatvalue(right));
}
else
{
result.type = svt_int;
result.value.i = intvalue(left) * intvalue(right);
}
}
void spn_value_print(const SpnValue *val)
{
switch (valtype(val)) {
case SPN_TTAG_NIL: {
fputs("nil", stdout);
break;
}
case SPN_TTAG_BOOL: {
fputs(boolvalue(val) ? "true" : "false", stdout);
break;
}
case SPN_TTAG_NUMBER: {
if (isfloat(val)) {
printf("%.*g", DBL_DIG, floatvalue(val));
} else {
printf("%ld", intvalue(val));
}
break;
}
case SPN_TTAG_STRING: {
SpnString *s = stringvalue(val);
fputs(s->cstr, stdout);
break;
}
case SPN_TTAG_ARRAY: {
SpnArray *array = objvalue(val);
print_array(array, 0);
break;
}
case SPN_TTAG_HASHMAP: {
SpnHashMap *hashmap = objvalue(val);
print_hashmap(hashmap, 0);
break;
}
case SPN_TTAG_FUNC: {
SpnFunction *func = funcvalue(val);
void *p;
if (func->native) {
p = (void *)(ptrdiff_t)(func->repr.fn);
} else {
p = func->repr.bc;
}
printf("<function %p>", p);
break;
}
case SPN_TTAG_USERINFO: {
void *ptr = isobject(val) ? objvalue(val) : ptrvalue(val);
printf("<userinfo %p>", ptr);
break;
}
default:
SHANT_BE_REACHED();
break;
}
}
unsigned long spn_hash_value(const SpnValue *key)
{
switch (valtype(key)) {
case SPN_TTAG_NIL: { return 0; }
case SPN_TTAG_BOOL: { return boolvalue(key); /* 0 or 1 */ }
case SPN_TTAG_NUMBER: {
if (isfloat(key)) {
double f = floatvalue(key);
/* only test for integer if it fits into one (anti-UB) */
if (LONG_MIN <= f && f <= LONG_MAX) {
long i = f; /* truncate */
if (f == i) {
/* it's really an integer.
* This takes care of the +/- 0 problem too
* (since 0 itself is an integer)
*/
return i;
}
} else {
return spn_hash_bytes(&f, sizeof f);
}
}
/* the hash value of an integer is itself */
return intvalue(key);
}
case SPN_TTAG_STRING:
case SPN_TTAG_ARRAY:
case SPN_TTAG_HASHMAP:
case SPN_TTAG_FUNC: {
SpnObject *obj = objvalue(key);
unsigned long (*hashfn)(void *) = obj->isa->hashfn;
return hashfn ? hashfn(obj) : (unsigned long)(obj);
}
case SPN_TTAG_USERINFO: {
if (isobject(key)) {
SpnObject *obj = objvalue(key);
unsigned long (*hashfn)(void *) = obj->isa->hashfn;
return hashfn ? hashfn(obj) : (unsigned long)(obj);
}
return (unsigned long)(ptrvalue(key));
}
default:
SHANT_BE_REACHED();
}
return 0;
}
unsigned long spn_hash_value(const SpnValue *key)
{
switch (valtype(key)) {
case SPN_TTAG_NIL: { return 0; }
case SPN_TTAG_BOOL: { return boolvalue(key); /* 0 or 1 */ }
case SPN_TTAG_NUMBER: {
if (isfloat(key)) {
double f = floatvalue(key);
long i = f; /* truncate */
if (f == i) {
return i; /* it's really an integer */
} else {
return spn_hash_bytes(&f, sizeof f);
}
}
/* the hash value of an integer is itself */
return intvalue(key);
}
case SPN_TTAG_STRING:
case SPN_TTAG_ARRAY:
case SPN_TTAG_HASHMAP:
case SPN_TTAG_FUNC: {
SpnObject *obj = objvalue(key);
unsigned long (*hashfn)(void *) = obj->isa->hashfn;
return hashfn ? hashfn(obj) : (unsigned long)(obj);
}
case SPN_TTAG_USERINFO: {
if (isobject(key)) {
SpnObject *obj = objvalue(key);
unsigned long (*hashfn)(void *) = obj->isa->hashfn;
return hashfn ? hashfn(obj) : (unsigned long)(obj);
}
return (unsigned long)(ptrvalue(key));
}
default:
SHANT_BE_REACHED();
}
return 0;
}
/* returns zero on success, nonzero on error */
static int append_format(
struct string_builder *bld,
const struct format_args *args,
void *argv,
int *argidx,
int isval,
char **errmsg
)
{
switch (args->spec) {
case '%':
append_string(bld, "%", 1);
break;
case 's': {
const char *str;
size_t len;
if (isval) {
SpnString *strobj;
/* must be a string */
SpnValue *val = getarg_val(argv, argidx);
if (!isstring(val)) {
format_errmsg(
errmsg,
TYPE_MISMATCH,
*argidx,
SPN_TYPE_STRING,
val->type
);
return -1;
}
strobj = stringvalue(val);
str = strobj->cstr;
len = strobj->len;
} else {
str = getarg_raw(argv, argidx);
len = strlen(str);
}
if (args->precision >= 0 && args->precision < len) {
len = args->precision;
}
if (args->width >= 0 && args->width > len) {
size_t pad = args->width - len;
expand_buffer(bld, pad);
while (pad-- > 0) {
bld->buf[bld->len++] = ' ';
}
}
append_string(bld, str, len);
break;
}
case 'i':
case 'd':
case 'b':
case 'o':
case 'u':
case 'x':
case 'X': {
char *buf, *end, *begin;
size_t len = PR_LONG_DIGITS;
enum format_flags flags = args->flags;
unsigned base = base_for_specifier(args->spec);
long n;
unsigned long u;
if (isval) {
/* must be a number */
SpnValue *val = getarg_val(argv, argidx);
if (!isnum(val)) {
format_errmsg(
errmsg,
TYPE_MISMATCH,
*argidx,
SPN_TTAG_NUMBER,
val->type
);
return -1;
}
if (isint(val)) {
n = intvalue(val);
} else {
n = floatvalue(val); /* truncate */
}
} else {
/* "%i" expects an int, others expect a long */
if (args->spec == 'i') {
n = *(const int *)getarg_raw(argv, argidx);
} else {
n = *(const long *)getarg_raw(argv, argidx);
}
}
if (args->spec == 'i' || args->spec == 'd') {
/* signed conversion specifiers */
if (n < 0) {
flags |= FLAG_NEGATIVE;
u = -n;
} else {
u = n;
}
} else {
/* unsigned conversion specifiers */
u = n;
}
if (args->spec == 'X') {
flags |= FLAG_CAPS;
}
if (args->width >= 0 && args->width > len) {
len = args->width;
}
buf = spn_malloc(len);
end = buf + len;
begin = ulong2str(end, u, base, args->width, flags);
assert(buf <= begin);
append_string(bld, begin, end - begin);
free(buf);
break;
}
case 'c': {
unsigned char ch;
int len = 1; /* one character is one character long... */
if (isval) {
/* must be an integer */
SpnValue *val = getarg_val(argv, argidx);
if (!isnum(val)) {
format_errmsg(
errmsg,
TYPE_MISMATCH,
*argidx,
SPN_TTAG_NUMBER,
val->type
);
return -1;
}
if (isfloat(val)) {
format_errmsg(errmsg, EXPECT_INTEGER, *argidx);
return -1;
}
ch = intvalue(val);
} else {
ch = *(const long *)getarg_raw(argv, argidx);
}
if (args->width > len) {
len = args->width;
}
expand_buffer(bld, len);
while (len-- > 1) {
bld->buf[bld->len++] = ' ';
}
bld->buf[bld->len++] = ch;
break;
}
case 'f':
case 'F': {
char *buf, *end, *begin;
size_t len;
int prec;
double x;
enum format_flags flags = args->flags;
if (isval) {
SpnValue *val = getarg_val(argv, argidx);
if (!isnum(val)) {
format_errmsg(
errmsg,
TYPE_MISMATCH,
*argidx,
SPN_TTAG_NUMBER,
val->type
);
return -1;
}
if (isfloat(val)) {
x = floatvalue(val);
} else {
x = intvalue(val);
}
} else {
x = *(const double *)getarg_raw(argv, argidx);
}
if (args->spec == 'F') {
flags |= FLAG_CAPS;
}
/* handle special cases */
if (+1.0 / x == +1.0 / -0.0) {
/* negative zero: set sign flag and carry on */
flags |= FLAG_NEGATIVE;
} else if (
x != x /* NaN */
|| x == +1.0 / 0.0 /* +inf */
|| x == -1.0 / 0.0 /* -inf */
) {
print_special_fp(bld, flags, args->width, x);
break;
}
if (x < 0.0) {
flags |= FLAG_NEGATIVE;
x = -x;
}
/* at this point, `x' is non-negative or -0 */
if (x >= 1.0) {
len = ceil(log10(x)) + 1; /* 10 ^ n is n + 1 digits long */
} else {
len = 1; /* leading zero needs exactly one character */
}
prec = args->precision < 0 ? DBL_DIG : args->precision;
len += prec + 3; /* decimal point, sign, leading zero */
if (args->width >= 0 && args->width > len) {
len = args->width;
}
buf = spn_malloc(len);
end = buf + len;
begin = double2str(end, x, args->width, prec, flags);
assert(buf <= begin);
append_string(bld, begin, end - begin);
free(buf);
break;
}
case 'B': {
int boolval;
const char *str;
size_t len;
if (isval) {
/* must be a boolean */
SpnValue *val = getarg_val(argv, argidx);
if (!isbool(val)) {
format_errmsg(
errmsg,
TYPE_MISMATCH,
*argidx,
SPN_TTAG_BOOL,
val->type
);
return -1;
}
boolval = boolvalue(val);
} else {
boolval = *(const int *)getarg_raw(argv, argidx);
}
str = boolval ? "true" : "false";
len = strlen(str);
if (args->precision >= 0 && args->precision < len) {
len = args->precision;
}
if (args->width >= 0 && args->width > len) {
size_t pad = args->width - len;
expand_buffer(bld, pad);
while (pad-- > 0) {
bld->buf[bld->len++] = ' ';
}
}
append_string(bld, str, len);
break;
}
default:
format_errmsg(errmsg, INVALID_SPECIFIER, ++*argidx, args->spec);
return -1;
}
return 0;
}
