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comparison.h
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comparison.h
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#ifndef SV_COMPARISON_H
#define SV_COMPARISON_H
#include "shapes.h"
#include "silver/engine.h"
#include "modules/bigint.h"
static inline void sv_op_seq(sv_vm_t *vm, ant_t *js) {
ant_value_t r = vm->stack[--vm->sp];
ant_value_t l = vm->stack[--vm->sp];
vm->stack[vm->sp++] = mkval(T_BOOL, strict_eq_values(js, l, r));
}
static inline void sv_op_sne(sv_vm_t *vm, ant_t *js) {
ant_value_t r = vm->stack[--vm->sp];
ant_value_t l = vm->stack[--vm->sp];
vm->stack[vm->sp++] = mkval(T_BOOL, !strict_eq_values(js, l, r));
}
static inline ant_value_t sv_abstract_eq(ant_t *js, ant_value_t l, ant_value_t r) {
uint8_t lt = vtype(l), rty = vtype(r);
if ((lt == T_NULL && rty == T_NULL) || (lt == T_UNDEF && rty == T_UNDEF) ||
(lt == T_UNDEF && rty == T_NULL) || (lt == T_NULL && rty == T_UNDEF))
return mkval(T_BOOL, 1);
if (lt == T_NULL || rty == T_NULL || lt == T_UNDEF || rty == T_UNDEF)
return mkval(T_BOOL, 0);
if (lt == rty)
return mkval(T_BOOL, strict_eq_values(js, l, r));
if ((lt == T_BIGINT && rty == T_NUM) || (lt == T_NUM && rty == T_BIGINT)) {
double num_val = lt == T_NUM ? tod(l) : tod(r);
ant_value_t bigint_val = lt == T_BIGINT ? l : r;
if (isfinite(num_val) && num_val == trunc(num_val)) {
bool neg = num_val < 0;
if (neg) num_val = -num_val;
char buf[64];
snprintf(buf, sizeof(buf), "%.0f", num_val);
return mkval(
T_BOOL, bigint_compare(js, bigint_val,
js_mkbigint(js, buf, strlen(buf), neg)) == 0);
}
return mkval(T_BOOL, 0);
}
if (lt == T_BOOL) return sv_abstract_eq(js, tov(vdata(l) ? 1.0 : 0.0), r);
if (rty == T_BOOL) return sv_abstract_eq(js, l, tov(vdata(r) ? 1.0 : 0.0));
if ((lt == T_NUM && rty == T_STR) || (lt == T_STR && rty == T_NUM))
return mkval(T_BOOL, js_to_number(js, l) == js_to_number(js, r));
if (is_object_type(l)) {
ant_value_t lp = js_to_primitive(js, l, 0);
if (!is_err(lp)) return sv_abstract_eq(js, lp, r);
}
if (is_object_type(r)) {
ant_value_t rp = js_to_primitive(js, r, 0);
if (!is_err(rp)) return sv_abstract_eq(js, l, rp);
}
return mkval(T_BOOL, 0);
}
static inline void sv_op_eq(sv_vm_t *vm, ant_t *js) {
ant_value_t r = vm->stack[--vm->sp];
ant_value_t l = vm->stack[--vm->sp];
vm->stack[vm->sp++] = sv_abstract_eq(js, l, r);
}
static inline void sv_op_ne(sv_vm_t *vm, ant_t *js) {
ant_value_t r = vm->stack[--vm->sp];
ant_value_t l = vm->stack[--vm->sp];
ant_value_t eq = sv_abstract_eq(js, l, r);
vm->stack[vm->sp++] = mkval(T_BOOL, !vdata(eq));
}
static inline int sv_strcmp(ant_t *js, ant_value_t l, ant_value_t r) {
ant_offset_t n1, off1 = vstr(js, l, &n1);
ant_offset_t n2, off2 = vstr(js, r, &n2);
ant_offset_t min_len = n1 < n2 ? n1 : n2;
int cmp = memcmp((const void *)(uintptr_t)off1, (const void *)(uintptr_t)off2, min_len);
if (cmp == 0) return (n1 < n2) ? -1 : (n1 > n2) ? 1 : 0;
return cmp < 0 ? -1 : 1;
}
static inline void sv_coerce_relational(ant_t *js, ant_value_t *l, ant_value_t *r) {
if (is_object_type(*l)) {
ant_value_t prim = js_to_primitive(js, *l, 2);
if (!is_err(prim)) *l = prim;
}
if (is_object_type(*r)) {
ant_value_t prim = js_to_primitive(js, *r, 2);
if (!is_err(prim)) *r = prim;
}
}
static inline ant_value_t sv_op_lt(sv_vm_t *vm, ant_t *js) {
ant_value_t r = vm->stack[--vm->sp];
ant_value_t l = vm->stack[--vm->sp];
sv_coerce_relational(js, &l, &r);
uint8_t lt = vtype(l), rty = vtype(r);
if (lt == T_NUM && rty == T_NUM) {
vm->stack[vm->sp++] = mkval(T_BOOL, tod(l) < tod(r));
return tov(0);
}
if (lt == T_BIGINT && rty == T_BIGINT) {
vm->stack[vm->sp++] = mkval(T_BOOL, bigint_compare(js, l, r) < 0);
return tov(0);
}
if (lt == T_BIGINT || rty == T_BIGINT)
return js_mkerr(js, "Cannot mix BigInt value and other types");
if (lt == T_STR && rty == T_STR) {
vm->stack[vm->sp++] = mkval(T_BOOL, sv_strcmp(js, l, r) < 0);
return tov(0);
}
vm->stack[vm->sp++] = mkval(T_BOOL, js_to_number(js, l) < js_to_number(js, r));
return tov(0);
}
static inline ant_value_t sv_op_le(sv_vm_t *vm, ant_t *js) {
ant_value_t r = vm->stack[--vm->sp];
ant_value_t l = vm->stack[--vm->sp];
sv_coerce_relational(js, &l, &r);
uint8_t lt = vtype(l), rty = vtype(r);
if (lt == T_NUM && rty == T_NUM) {
vm->stack[vm->sp++] = mkval(T_BOOL, tod(l) <= tod(r));
return tov(0);
}
if (lt == T_BIGINT && rty == T_BIGINT) {
vm->stack[vm->sp++] = mkval(T_BOOL, bigint_compare(js, l, r) <= 0);
return tov(0);
}
if (lt == T_BIGINT || rty == T_BIGINT)
return js_mkerr(js, "Cannot mix BigInt value and other types");
if (lt == T_STR && rty == T_STR) {
vm->stack[vm->sp++] = mkval(T_BOOL, sv_strcmp(js, l, r) <= 0);
return tov(0);
}
vm->stack[vm->sp++] = mkval(T_BOOL, js_to_number(js, l) <= js_to_number(js, r));
return tov(0);
}
static inline ant_value_t sv_op_gt(sv_vm_t *vm, ant_t *js) {
ant_value_t r = vm->stack[--vm->sp];
ant_value_t l = vm->stack[--vm->sp];
sv_coerce_relational(js, &l, &r);
uint8_t lt = vtype(l), rty = vtype(r);
if (lt == T_NUM && rty == T_NUM) {
vm->stack[vm->sp++] = mkval(T_BOOL, tod(l) > tod(r));
return tov(0);
}
if (lt == T_BIGINT && rty == T_BIGINT) {
vm->stack[vm->sp++] = mkval(T_BOOL, bigint_compare(js, l, r) > 0);
return tov(0);
}
if (lt == T_BIGINT || rty == T_BIGINT)
return js_mkerr(js, "Cannot mix BigInt value and other types");
if (lt == T_STR && rty == T_STR) {
vm->stack[vm->sp++] = mkval(T_BOOL, sv_strcmp(js, l, r) > 0);
return tov(0);
}
vm->stack[vm->sp++] = mkval(T_BOOL, js_to_number(js, l) > js_to_number(js, r));
return tov(0);
}
static inline ant_value_t sv_op_ge(sv_vm_t *vm, ant_t *js) {
ant_value_t r = vm->stack[--vm->sp];
ant_value_t l = vm->stack[--vm->sp];
sv_coerce_relational(js, &l, &r);
uint8_t lt = vtype(l), rty = vtype(r);
if (lt == T_NUM && rty == T_NUM) {
vm->stack[vm->sp++] = mkval(T_BOOL, tod(l) >= tod(r));
return tov(0);
}
if (lt == T_BIGINT && rty == T_BIGINT) {
vm->stack[vm->sp++] = mkval(T_BOOL, bigint_compare(js, l, r) >= 0);
return tov(0);
}
if (lt == T_BIGINT || rty == T_BIGINT)
return js_mkerr(js, "Cannot mix BigInt value and other types");
if (lt == T_STR && rty == T_STR) {
vm->stack[vm->sp++] = mkval(T_BOOL, sv_strcmp(js, l, r) >= 0);
return tov(0);
}
vm->stack[vm->sp++] = mkval(T_BOOL, js_to_number(js, l) >= js_to_number(js, r));
return tov(0);
}
static inline sv_ic_entry_t *sv_instanceof_ic_slot(sv_func_t *func, uint8_t *ip) {
if (!func || !func->ic_slots || !ip) return NULL;
uint16_t ic_idx = sv_get_u16(ip + 1);
if (ic_idx == UINT16_MAX || ic_idx >= func->ic_count) return NULL;
return &func->ic_slots[ic_idx];
}
static inline sv_ic_entry_t *sv_isproto_ic_slot(sv_func_t *func, uint8_t *ip) {
if (!func || !func->ic_slots || !ip) return NULL;
uint16_t ic_idx = sv_get_u16(ip + 1);
if (ic_idx == UINT16_MAX || ic_idx >= func->ic_count) return NULL;
return &func->ic_slots[ic_idx];
}
static inline ant_value_t sv_instanceof_ic_eval(
ant_t *js, ant_value_t l, ant_value_t r,
sv_func_t *func, uint8_t *ip
) {
sv_ic_entry_t *ic = sv_instanceof_ic_slot(func, ip);
if (!ic || !is_object_type(l) || vtype(r) != T_FUNC) goto slow_path;
uint32_t cur_epoch = ant_ic_epoch_counter;
uintptr_t rhs_id = (uintptr_t)vdata(r);
if (ic->epoch != cur_epoch || ic->cached_aux != rhs_id) goto slow_path;
ant_object_t *lhs_ptr = js_obj_ptr(js_as_obj(l));
if (lhs_ptr && lhs_ptr->shape == ic->cached_shape)
return js_bool(ic->cached_index != 0);
slow_path:
ant_value_t res = do_instanceof(js, l, r);
lhs_ptr = is_object_type(l) ? js_obj_ptr(js_as_obj(l)) : NULL;
if (!is_err(res) && ic && lhs_ptr && vtype(r) == T_FUNC && vtype(res) == T_BOOL) {
ic->cached_shape = lhs_ptr->shape;
ic->cached_holder = NULL;
ic->cached_index = (uint32_t)(vdata(res) ? 1u : 0u);
ic->epoch = ant_ic_epoch_counter;
ic->cached_aux = (uintptr_t)vdata(r);
}
return res;
}
static inline ant_value_t sv_op_instanceof(
sv_vm_t *vm, ant_t *js,
sv_func_t *func, uint8_t *ip
) {
ant_value_t r = vm->stack[--vm->sp];
ant_value_t l = vm->stack[--vm->sp];
ant_value_t res = sv_instanceof_ic_eval(js, l, r, func, ip);
if (!is_err(res)) vm->stack[vm->sp++] = res;
return res;
}
static inline ant_value_t sv_isproto_ic_eval(
ant_t *js, ant_value_t proto_obj, ant_value_t obj,
sv_func_t *func, uint8_t *ip
) {
sv_ic_entry_t *ic = sv_isproto_ic_slot(func, ip);
ant_object_t *proto_ptr = is_object_type(proto_obj) ? js_obj_ptr(js_as_obj(proto_obj)) : NULL;
ant_object_t *obj_ptr = is_object_type(obj) ? js_obj_ptr(js_as_obj(obj)) : NULL;
if (
ic && proto_ptr && obj_ptr &&
ic->epoch == ant_ic_epoch_counter &&
ic->cached_holder == proto_ptr &&
(ant_object_t *)(uintptr_t)ic->cached_shape == obj_ptr
) {
return js_bool(ic->cached_index != 0);
}
bool found = js_is_prototype_of(js, proto_obj, obj);
if (ic && proto_ptr && obj_ptr) {
ic->cached_holder = proto_ptr;
ic->cached_shape = (ant_shape_t *)(uintptr_t)obj_ptr;
ic->cached_index = found ? 1u : 0u;
ic->epoch = ant_ic_epoch_counter;
}
return js_bool(found);
}
static inline ant_value_t sv_op_in(sv_vm_t *vm, ant_t *js) {
ant_value_t r = vm->stack[--vm->sp];
ant_value_t l = vm->stack[--vm->sp];
ant_value_t res = do_in(js, l, r);
if (!is_err(res)) vm->stack[vm->sp++] = res;
return res;
}
static inline void sv_op_is_nullish(sv_vm_t *vm) {
ant_value_t v = vm->stack[--vm->sp];
uint8_t t = vtype(v);
vm->stack[vm->sp++] = mkval(T_BOOL, t == T_NULL || t == T_UNDEF);
}
static inline void sv_op_is_undef_or_null(sv_vm_t *vm) {
ant_value_t v = vm->stack[--vm->sp];
uint8_t t = vtype(v);
vm->stack[vm->sp++] = mkval(T_BOOL, t == T_NULL || t == T_UNDEF);
}
#endif

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