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/*
* Copyright (C) Igor Sysoev
* Copyright (C) NGINX, Inc.
*/
#ifndef _NJS_OBJECT_H_INCLUDED_
#define _NJS_OBJECT_H_INCLUDED_
typedef enum {
NJS_OBJECT_PROP_DESCRIPTOR = 0,
NJS_OBJECT_PROP_VALUE = 1,
NJS_OBJECT_PROP_GETTER = 2,
NJS_OBJECT_PROP_SETTER = 3,
#define njs_prop_type(flags) (flags & 3)
NJS_OBJECT_PROP_CREATE = 4,
NJS_OBJECT_PROP_ENUMERABLE = 8,
NJS_OBJECT_PROP_CONFIGURABLE = 16,
NJS_OBJECT_PROP_WRITABLE = 32,
NJS_OBJECT_PROP_UNSET = 64,
NJS_OBJECT_PROP_IS_STRING = 128,
#define NJS_OBJECT_PROP_VALUE_ECW (NJS_OBJECT_PROP_VALUE \
| NJS_OBJECT_PROP_ENUMERABLE \
| NJS_OBJECT_PROP_CONFIGURABLE \
| NJS_OBJECT_PROP_WRITABLE)
#define NJS_OBJECT_PROP_VALUE_EC (NJS_OBJECT_PROP_VALUE \
| NJS_OBJECT_PROP_ENUMERABLE \
| NJS_OBJECT_PROP_CONFIGURABLE)
#define NJS_OBJECT_PROP_VALUE_CW (NJS_OBJECT_PROP_VALUE \
| NJS_OBJECT_PROP_CONFIGURABLE \
| NJS_OBJECT_PROP_WRITABLE)
#define NJS_OBJECT_PROP_VALUE_E (NJS_OBJECT_PROP_VALUE \
| NJS_OBJECT_PROP_ENUMERABLE)
#define NJS_OBJECT_PROP_VALUE_C (NJS_OBJECT_PROP_VALUE \
| NJS_OBJECT_PROP_CONFIGURABLE)
#define NJS_OBJECT_PROP_VALUE_W (NJS_OBJECT_PROP_VALUE \
| NJS_OBJECT_PROP_WRITABLE)
} njs_object_prop_flags_t;
struct njs_object_init_s {
const njs_object_prop_init_t *properties;
njs_uint_t items;
};
typedef struct njs_traverse_s njs_traverse_t;
struct njs_traverse_s {
struct njs_traverse_s *parent;
njs_object_prop_t *prop;
uint32_t atom_id;
njs_value_t value;
njs_array_t *keys;
int64_t index;
#define NJS_TRAVERSE_MAX_DEPTH 32
};
typedef njs_int_t (*njs_object_traverse_cb_t)(njs_vm_t *vm,
njs_traverse_t *traverse, void *ctx);
njs_object_t *njs_object_alloc(njs_vm_t *vm);
njs_object_t *njs_object_value_copy(njs_vm_t *vm, njs_value_t *value);
njs_object_value_t *njs_object_value_alloc(njs_vm_t *vm, njs_uint_t index,
size_t extra,const njs_value_t *value);
njs_array_t *njs_object_enumerate(njs_vm_t *vm, const njs_object_t *object,
uint32_t flags);
njs_array_t *njs_object_own_enumerate(njs_vm_t *vm, const njs_object_t *object,
uint32_t flags);
njs_int_t njs_object_traverse(njs_vm_t *vm, njs_object_t *object, void *ctx,
njs_object_traverse_cb_t cb);
njs_int_t njs_object_make_shared(njs_vm_t *vm, njs_object_t *object);
njs_int_t njs_object_hash_create(njs_vm_t *vm, njs_flathsh_t *hash,
const njs_object_prop_init_t *prop, njs_uint_t n);
njs_int_t njs_primitive_prototype_get_proto(njs_vm_t *vm,
njs_object_prop_t *prop, uint32_t unused, njs_value_t *value,
njs_value_t *setval, njs_value_t *retval);
njs_int_t njs_object_prototype_create(njs_vm_t *vm, njs_object_prop_t *prop,
uint32_t unused, njs_value_t *value, njs_value_t *setval,
njs_value_t *retval);
njs_value_t *njs_property_prototype_create(njs_vm_t *vm, njs_flathsh_t *hash,
njs_object_t *prototype);
njs_int_t njs_object_prototype_proto(njs_vm_t *vm, njs_object_prop_t *prop,
uint32_t unused, njs_value_t *value, njs_value_t *setval,
njs_value_t *retval);
njs_int_t njs_object_prototype_create_constructor(njs_vm_t *vm,
njs_object_prop_t *prop, uint32_t unused, njs_value_t *value,
njs_value_t *setval, njs_value_t *retval);
njs_value_t *njs_property_constructor_set(njs_vm_t *vm, njs_flathsh_t *hash,
njs_value_t *constructor);
njs_int_t njs_object_to_string(njs_vm_t *vm, njs_value_t *value,
njs_value_t *retval);
njs_int_t njs_object_prototype_to_string(njs_vm_t *vm, njs_value_t *args,
njs_uint_t nargs, njs_index_t unused, njs_value_t *retval);
njs_int_t njs_object_length(njs_vm_t *vm, njs_value_t *value, int64_t *dst);
njs_int_t njs_prop_private_copy(njs_vm_t *vm, njs_property_query_t *pq,
njs_object_t *proto);
void njs_object_prop_init(njs_object_prop_t *prop, njs_object_prop_type_t type,
uint8_t attributes);
njs_int_t njs_object_property(njs_vm_t *vm, njs_object_t *object,
njs_flathsh_query_t *lhq, njs_value_t *retval);
njs_object_prop_t *njs_object_property_add(njs_vm_t *vm, njs_value_t *object,
uint32_t atom_id, njs_bool_t replace);
njs_int_t njs_object_prop_define(njs_vm_t *vm, njs_value_t *object,
uint32_t atom_id, njs_value_t *value, uint32_t flags);
njs_int_t njs_object_prop_descriptor(njs_vm_t *vm, njs_value_t *dest,
njs_value_t *value, njs_value_t *setval);
njs_int_t njs_object_get_prototype_of(njs_vm_t *vm, njs_value_t *args,
njs_uint_t nargs, njs_index_t unused, njs_value_t *retval);
const char *njs_prop_type_string(njs_object_prop_type_t type);
njs_int_t njs_object_props_init(njs_vm_t *vm, const njs_object_init_t* init,
njs_object_prop_t *base, uint32_t atom_id, njs_value_t *value,
njs_value_t *retval);
njs_inline njs_bool_t
njs_is_data_descriptor(njs_object_prop_t *prop)
{
return (prop->type == NJS_PROPERTY && njs_is_valid(njs_prop_value(prop)))
|| prop->type == NJS_PROPERTY_HANDLER
|| prop->type == NJS_PROPERTY_REF
|| prop->type == NJS_PROPERTY_PLACE_REF
|| prop->type == NJS_PROPERTY_TYPED_ARRAY_REF;
}
njs_inline njs_bool_t
njs_is_accessor_descriptor(njs_object_prop_t *prop)
{
return prop->type == NJS_ACCESSOR;
}
njs_inline njs_int_t
njs_primitive_value_to_key(njs_vm_t *vm, njs_value_t *dst,
const njs_value_t *src)
{
switch (src->type) {
case NJS_NULL:
njs_atom_to_value(vm, dst, NJS_ATOM_STRING_null);
return NJS_OK;
case NJS_UNDEFINED:
njs_atom_to_value(vm, dst, NJS_ATOM_STRING_undefined);
return NJS_OK;
case NJS_BOOLEAN:
if (njs_is_true(src)) {
njs_atom_to_value(vm, dst, NJS_ATOM_STRING_true);
} else {
njs_atom_to_value(vm, dst, NJS_ATOM_STRING_false);
}
return NJS_OK;
case NJS_NUMBER:
case NJS_SYMBOL:
case NJS_STRING:
*dst = *src;
return NJS_OK;
default:
return NJS_ERROR;
}
}
njs_inline njs_int_t
njs_value_to_key2(njs_vm_t *vm, njs_value_t *dst, njs_value_t *value,
njs_bool_t convert)
{
njs_int_t ret;
njs_value_t primitive;
if (njs_slow_path(!njs_is_primitive(value))) {
if (njs_slow_path(njs_is_object_symbol(value))) {
/* should fail */
value = njs_object_value(value);
} else {
if (convert) {
ret = njs_value_to_primitive(vm, &primitive, value, 1);
} else {
ret = njs_object_to_string(vm, value, &primitive);
}
if (njs_slow_path(ret != NJS_OK)) {
return ret;
}
value = &primitive;
}
}
return njs_primitive_value_to_key(vm, dst, value);
}
njs_inline njs_int_t
njs_value_to_key(njs_vm_t *vm, njs_value_t *dst, njs_value_t *value)
{
return njs_value_to_key2(vm, dst, value, 1);
}
njs_inline njs_int_t
njs_key_string_get(njs_vm_t *vm, njs_value_t *key, njs_str_t *str)
{
njs_int_t ret;
if (njs_slow_path(njs_is_symbol(key))) {
ret = njs_symbol_descriptive_string(vm, key, key);
if (njs_slow_path(ret != NJS_OK)) {
return ret;
}
} else if (njs_slow_path(!njs_is_string(key))) {
ret = njs_value_to_string(vm, key, key);
if (njs_slow_path(ret != NJS_OK)) {
return ret;
}
}
njs_string_get(vm, key, str);
return NJS_OK;
}
njs_inline void
njs_atom_string_get(njs_vm_t *vm, uint32_t atom_id, njs_str_t *str)
{
njs_value_t value;
if (njs_atom_to_value(vm, &value, atom_id) != NJS_OK) {
str->start = (u_char *) "unknown";
str->length = njs_length("unknown");
}
njs_key_string_get(vm, &value, str);
}
njs_inline njs_int_t
njs_object_prop_define_val(njs_vm_t *vm, njs_value_t *object, njs_value_t *name,
njs_value_t *value, unsigned flags)
{
njs_int_t ret;
if (njs_value_atom(name) == NJS_ATOM_STRING_unknown) {
ret = njs_atom_atomize_key(vm, name);
if (ret != NJS_OK) {
return ret;
}
}
if (njs_is_string(name)) {
flags |= NJS_OBJECT_PROP_IS_STRING;
}
return njs_object_prop_define(vm, object, name->atom_id, value, flags);
}
njs_inline njs_int_t
njs_value_create_data_prop(njs_vm_t *vm, njs_value_t *value,
njs_value_t *name, njs_value_t *setval, uint32_t hash)
{
return njs_object_prop_define_val(vm, value, name, setval,
NJS_OBJECT_PROP_CREATE
| NJS_OBJECT_PROP_VALUE_ECW);
}
njs_inline njs_int_t
njs_value_create_data_prop_i64(njs_vm_t *vm, njs_value_t *value, int64_t index,
njs_value_t *setval, uint32_t hash)
{
njs_value_t key;
njs_set_number(&key, index);
return njs_value_create_data_prop(vm, value, &key, setval, hash);
}
njs_inline njs_int_t
njs_object_length_set(njs_vm_t *vm, njs_value_t *value, int64_t length)
{
njs_value_t index;
njs_value_number_set(&index, length);
return njs_value_property_set(vm, value, NJS_ATOM_STRING_length, &index);
}
njs_inline njs_int_t
njs_object_string_tag(njs_vm_t *vm, njs_value_t *value, njs_value_t *tag)
{
njs_int_t ret;
ret = njs_value_property(vm, value, NJS_ATOM_SYMBOL_toStringTag, tag);
if (njs_slow_path(ret != NJS_OK)) {
return ret;
}
if (!njs_is_string(tag)) {
return NJS_DECLINED;
}
return NJS_OK;
}
njs_inline njs_object_t *
_njs_object_proto_lookup(njs_object_t *proto, njs_value_type_t type)
{
do {
if (njs_fast_path(proto->type == type)) {
break;
}
proto = proto->__proto__;
} while (proto != NULL);
return proto;
}
#define njs_object_proto_lookup(proto, vtype, ctype) \
(ctype *) _njs_object_proto_lookup(proto, vtype)
extern const njs_object_type_init_t njs_obj_type_init;
#endif /* _NJS_OBJECT_H_INCLUDED_ */
|
