ant.h
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ant.h
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	#ifndef ANT_H
	#define ANT_H

	#pragma once
	#define PCRE2_CODE_UNIT_WIDTH 8

	#include "types.h"
	#include "common.h"

	#include <math.h>
	#include <stdbool.h>
	#include <stddef.h>
	#include <stdint.h>
	#include <stdio.h>
	#include <inttypes.h>

	#define STR_PROTO "__proto__"
	#define STR_PROTO_LEN 9
	#define CFUNC_HAS_PROTOTYPE 0x01u

	#define ANT_ASSERT(cond, msg) ({ \
	if (!(cond)) { \
	fprintf(stderr, "ANT FATAL: %s\n %s:%d\n", msg, __FILE__, __LINE__); \
	abort(); \
	}})

	#define ANT_STRING(s) js_mkstr(js, s, sizeof(s) - 1)
	#define ANT_PTR(ptr) js_mknum((double)(uintptr_t)(ptr))
	#define ANT_COPY(buf, len, s) cpy(buf, len, s, sizeof(s) - 1)
	#define REMAIN(n, len) ((n) >= (len) ? 0 : (len) - (n))

	#define JS_NAN ((double)NAN)
	#define JS_NEG_NAN ((double)(-NAN))
	#define JS_INF ((double)INFINITY)
	#define JS_NEG_INF ((double)(-INFINITY))

	#define js_true (NANBOX_PREFIX \| ((ant_value_t)T_BOOL << NANBOX_TYPE_SHIFT) \| 1)
	#define js_false (NANBOX_PREFIX \| ((ant_value_t)T_BOOL << NANBOX_TYPE_SHIFT))
	#define js_bool(x) (js_false \| (ant_value_t)!!(x))

	ant_t js_create(void buf, size_t len);
	ant_t *js_create_dynamic();

	ant_value_t js_glob(ant_t *);
	void js_mark_constructor(ant_value_t value, bool is_constructor);

	// TODO: improve naming
	ant_value_t js_eval_bytecode(ant_t , const char , size_t);
	ant_value_t js_eval_bytecode_module(ant_t , const char , size_t);
	ant_value_t js_eval_bytecode_eval(ant_t , const char , size_t);
	ant_value_t js_eval_bytecode_eval_with_strict(ant_t , const char , size_t, bool);
	ant_value_t js_eval_bytecode_repl(ant_t , const char , size_t);

	void js_destroy(ant_t *);
	bool js_truthy(ant_t *, ant_value_t);
	void js_setstackbase(ant_t , void );
	void js_setstacklimit(ant_t *, size_t);

	uint32_t js_to_uint32(double d);
	int32_t js_to_int32(double d);

	bool js_chkargs(ant_value_t , int, const char );
	void js_set_filename(ant_t , const char );
	void js_stats(ant_t , size_t total, size_t min, size_t cstacksize);

	ant_value_t js_mkundef(void);
	ant_value_t js_mknull(void);
	ant_value_t js_mknum(double);
	ant_value_t js_mkpromise(ant_t *js);
	ant_value_t js_mkgenerator(ant_t *js);

	ant_value_t js_getthis(ant_t *);
	void js_setthis(ant_t *, ant_value_t);

	ant_value_t js_getcurrentfunc(ant_t *);
	ant_value_t js_get(ant_t , ant_value_t, const char );
	ant_value_t js_getprop_proto(ant_t , ant_value_t, const char );
	ant_value_t js_getprop_fallback(ant_t js, ant_value_t obj, const char name);
	ant_value_t js_getprop_super(ant_t js, ant_value_t super_obj, ant_value_t receiver, const char name);

	ant_offset_t js_arr_len(ant_t *js, ant_value_t arr);
	ant_value_t js_arr_get(ant_t *js, ant_value_t arr, ant_offset_t idx);

	bool js_iter(
	ant_t *js,
	ant_value_t iterable,
	bool (*callback)(
	ant_t *js,
	ant_value_t value,
	void *udata
	),
	void *udata
	);

	const char *js_sym_desc(ant_value_t sym);
	const char *js_sym_key(ant_value_t sym);

	ant_value_t js_mksym_for(ant_t , const char key);
	ant_value_t js_symbol_to_string(ant_t *js, ant_value_t sym);
	ant_value_t js_get_sym(ant_t *, ant_value_t obj, ant_value_t sym);
	ant_value_t js_get_symbol(ant_t , ant_value_t obj, const char key);
	ant_value_t js_get_sym_with_receiver(ant_t *, ant_value_t obj, ant_value_t sym, ant_value_t receiver);

	ant_value_t js_mkobj(ant_t *);
	ant_value_t js_mkobj_with_inobj_limit(ant_t *, uint8_t inobj_limit);

	ant_value_t js_newobj(ant_t *);
	ant_value_t js_mkarr(ant_t *);
	ant_value_t js_mkstr(ant_t , const void , size_t);
	ant_value_t js_mkstr_permanent(ant_t , const void , size_t);
	ant_value_t js_mkbigint(ant_t , const char digits, size_t len, bool negative);

	ant_value_t js_mksym(ant_t , const char desc);
	ant_value_t js_mksym_well_known(ant_t , const char desc);
	ant_value_t js_mkfun_meta(const ant_cfunc_meta_t *meta);
	ant_value_t js_mkfun_dyn(ant_cfunc_t fn);

	ant_value_t js_heavy_mkfun(ant_t js, ant_value_t (fn)(ant_t , ant_value_t , int), ant_value_t data);
	ant_value_t js_mkprop_fast(ant_t js, ant_value_t obj, const char key, size_t len, ant_value_t v);
	ant_offset_t js_mkprop_fast_off(ant_t js, ant_value_t obj, const char key, size_t len, ant_value_t v);

	#define js_mkfun(fn) ({ \
	static const ant_cfunc_meta_t _ant_cfunc_meta = { (fn), NULL, 0, 0 }; \
	js_mkfun_meta(&_ant_cfunc_meta); \
	})

	#define js_mkfun_arity(fn, arity) ({ \
	static const ant_cfunc_meta_t _ant_cfunc_meta = { (fn), NULL, (arity), 0 }; \
	js_mkfun_meta(&_ant_cfunc_meta); \
	})

	#define js_mkfun_flags(fn, flags) ({ \
	static const ant_cfunc_meta_t _ant_cfunc_meta = { (fn), NULL, 0, (flags) }; \
	js_mkfun_meta(&_ant_cfunc_meta); \
	})

	#define js_mkfun_arity_flags(fn, arity, flags) ({ \
	static const ant_cfunc_meta_t _ant_cfunc_meta = { (fn), NULL, (arity), (flags) }; \
	js_mkfun_meta(&_ant_cfunc_meta); \
	})

	void js_set(ant_t , ant_value_t, const char , ant_value_t);
	void js_set_exact(ant_t , ant_value_t, const char , ant_value_t);
	void js_set_sym(ant_t *, ant_value_t obj, ant_value_t sym, ant_value_t val);
	void js_set_symbol(ant_t , ant_value_t obj, const char key, ant_value_t val);
	void js_saveval(ant_t *js, ant_offset_t off, ant_value_t v);
	void js_merge_obj(ant_t *, ant_value_t dst, ant_value_t src);
	void js_arr_push(ant_t *, ant_value_t arr, ant_value_t val);
	void js_set_proto(ant_value_t obj, ant_value_t proto);
	void js_set_proto_wb(ant_t *js, ant_value_t obj, ant_value_t proto);
	void js_set_proto_init(ant_value_t obj, ant_value_t proto);

	ant_value_t js_propref_load(ant_t *js, ant_offset_t handle);
	ant_value_t js_setprop(ant_t *, ant_value_t obj, ant_value_t key, ant_value_t val);
	ant_value_t js_setprop_nonconfigurable(ant_t , ant_value_t obj, const char key, size_t keylen, ant_value_t val);

	ant_value_t js_get_proto(ant_t *, ant_value_t obj);
	ant_value_t js_get_ctor_proto(ant_t , const char name, size_t len);
	ant_value_t js_tostring_val(ant_t *js, ant_value_t value);

	uint8_t vtype(ant_value_t val);
	size_t vdata(ant_value_t val);
	bool js_is_constructor(ant_value_t value);

	ant_object_t *js_obj_ptr(ant_value_t val);
	ant_value_t js_obj_from_ptr(ant_object_t *obj);

	double js_getnum(ant_value_t val);
	char js_getstr(ant_t js, ant_value_t val, size_t *len);

	const char js_str(ant_t , ant_value_t val);
	const char get_str_prop(ant_t js, ant_value_t obj, const char key, ant_offset_t klen, ant_offset_t out_len);

	typedef struct {
	void *ctx;
	ant_offset_t off;
	} ant_iter_t;

	typedef struct {
	uint32_t slot;
	bool is_symbol;
	const char *str;
	size_t key_len;
	ant_offset_t sym_off;
	} ant_iter_key_t;

	ant_iter_t js_prop_iter_begin(ant_t *js, ant_value_t obj);
	void js_prop_iter_end(ant_iter_t *iter);

	bool js_prop_iter_next_key(ant_iter_t iter, ant_iter_key_t key_out, ant_value_t *value);
	bool js_prop_iter_next(ant_iter_t iter, const char key, size_t key_len, ant_value_t *value);
	bool js_prop_iter_next_val(ant_iter_t iter, ant_value_t key_out, ant_value_t *value);
	bool js_is_own_enumerable_prop(ant_t js, ant_value_t source, ant_object_t source_ptr, const ant_iter_key_t *key);

	ant_value_t js_obj_to_func(ant_value_t obj);
	ant_value_t js_obj_to_func_ex(ant_value_t obj, uint8_t flags);

	ant_value_t js_mktypedarray(void *data);
	void *js_gettypedarray(ant_value_t val);

	void js_check_unhandled_rejections(ant_t *js);
	void js_setup_import_meta(ant_t js, const char filename);
	void js_process_promise_handlers(ant_t *js, ant_value_t promise);
	void js_mark_promise_trigger_dequeued(ant_t *js, ant_value_t promise);
	bool js_mark_promise_trigger_queued(ant_t *js, ant_value_t promise);
	bool js_try_get_own_data_prop(ant_t js, ant_value_t obj, const char key, size_t key_len, ant_value_t *out);
	void js_reject_promise(ant_t *js, ant_value_t promise, ant_value_t value);
	void js_resolve_promise(ant_t *js, ant_value_t promise, ant_value_t value);

	typedef ant_value_t (js_getter_fn)(ant_t js, ant_value_t obj, const char *key, size_t key_len);
	typedef ant_value_t (js_keys_fn)(ant_t js, ant_value_t obj);

	typedef bool (js_setter_fn)(ant_t js, ant_value_t obj, const char *key, size_t key_len, ant_value_t value);
	typedef bool (js_deleter_fn)(ant_t js, ant_value_t obj, const char *key, size_t key_len);
	typedef void (js_finalizer_fn)(ant_t js, ant_object_t *obj);

	void js_set_getter(ant_value_t obj, js_getter_fn getter);
	void js_set_setter(ant_value_t obj, js_setter_fn setter);
	void js_set_deleter(ant_value_t obj, js_deleter_fn deleter);
	void js_set_keys(ant_value_t obj, js_keys_fn keys);
	void js_set_finalizer(ant_value_t obj, js_finalizer_fn fn);

	ant_value_t js_get_slot(ant_value_t obj, internal_slot_t slot);
	ant_value_t js_promise_assimilate_awaitable(ant_t *js, ant_value_t value);
	ant_value_t js_promise_then(ant_t *js, ant_value_t promise, ant_value_t on_fulfilled, ant_value_t on_rejected);

	void js_set_slot(ant_value_t obj, internal_slot_t slot, ant_value_t value);
	void js_set_slot_wb(ant_t *, ant_value_t obj, internal_slot_t slot, ant_value_t value);

	#endif

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