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symbol.h
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symbol.h
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#ifndef SYMBOL_H
#define SYMBOL_H
#include <stdbool.h>
#include "internal.h" // IWYU pragma: keep
void init_symbol_module(void);
void js_define_species_getter(ant_t *js, ant_value_t ctor);
#define ITER_STATE_PACK(kind, n) ((uint32_t)(kind) << 28 | ((uint32_t)(n) & 0x0FFFFFFFU))
#define ITER_STATE_KIND(v) ((uint32_t)(v) >> 28)
#define ITER_STATE_INDEX(v) ((uint32_t)(v) & 0x0FFFFFFFU)
enum { ARR_ITER_VALUES = 0, ARR_ITER_KEYS = 1, ARR_ITER_ENTRIES = 2 };
ant_value_t make_array_iterator(ant_t *js, ant_value_t array, int kind);
typedef struct js_iter_t js_iter_t;
typedef bool (*js_iter_advance_fn)(ant_t *js, js_iter_t *it, ant_value_t *out);
struct js_iter_t {
ant_value_t iterator;
ant_value_t next_fn;
js_iter_advance_fn advance;
};
void js_iter_register_advance(ant_value_t proto, js_iter_advance_fn fn);
bool js_iter_open(ant_t *js, ant_value_t iterable, js_iter_t *it);
bool js_iter_next(ant_t *js, js_iter_t *it, ant_value_t *out);
void js_iter_close(ant_t *js, js_iter_t *it);
ant_value_t maybe_call_symbol_method(
ant_t *js, ant_value_t target, ant_value_t sym,
ant_value_t this_arg, ant_value_t *args,
int nargs, bool *called
);
#define WELLKNOWN_SYMBOLS(X) \
X(iterator, "Symbol.iterator") \
X(asyncIterator, "Symbol.asyncIterator") \
X(inspect, "Symbol.inspect") \
X(toStringTag, "Symbol.toStringTag") \
X(hasInstance, "Symbol.hasInstance") \
X(match, "Symbol.match") \
X(replace, "Symbol.replace") \
X(search, "Symbol.search") \
X(split, "Symbol.split") \
X(matchAll, "Symbol.matchAll") \
X(isConcatSpreadable, "Symbol.isConcatSpreadable") \
X(dispose, "Symbol.dispose") \
X(asyncDispose, "Symbol.asyncDispose") \
X(observable, "Symbol.observable") \
X(toPrimitive, "Symbol.toPrimitive") \
X(species, "Symbol.species") \
X(unscopables, "Symbol.unscopables") \
X(default, "Symbol.default")
#define DECL_GET_SYM(name, _desc) ant_value_t get_##name##_sym(void);
WELLKNOWN_SYMBOLS(DECL_GET_SYM)
#undef DECL_GET_SYM
static inline ant_value_t sym_this_cb(ant_t *js, ant_value_t *args, int nargs) {
return js->this_val;
}
static inline ant_value_t js_iter_result(ant_t *js, bool has_value, ant_value_t value) {
ant_value_t result = js_mkobj(js);
if (__builtin_expect(has_value, 1)) {
js_set(js, result, "done", js_false);
js_set(js, result, "value", value);
} else {
js_set(js, result, "done", js_true);
js_set(js, result, "value", js_mkundef());
}
return result;
}
#endif

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