mirror of
https://github.com/pjh456/OxideJS.git
synced 2026-10-24 10:41:11 +08:00
62 lines
2.9 KiB
Rust
62 lines
2.9 KiB
Rust
use crate::bindings::{
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apply_binding_table, bind_global_value, bind_well_known_data_property, configure_native_constructor, BindEnv,
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};
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use oxide_types::object::{JsObject, PropAttributes};
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use oxide_types::value::JsValue;
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/// 把 BigInt 构造器与原型方法绑定到 global。
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///
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/// 构造器/原型对象由 `BuiltinWorld` 创建（含 name/prototype/constructor 互指），
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/// 这里只配置 native 实现并挂方法。`BigInt(value)` 当函数调用时返回 BigInt 值；
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/// `new BigInt()` 抛 TypeError（BigInt 不可 new）。
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///
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/// `realm_id` 是目标所属 realm 的编号：`@@toStringTag` 符号键按 (realm 编号,
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/// 局部下标) 编码，realm 编号为 0 时与旧编码逐字节一致。
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pub fn bind_bigint(env: BindEnv<'_>, global: &mut JsObject) {
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let world = env.world();
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let ctor_ptr = world.bigint_constructor.as_ptr() as *mut JsObject;
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let ctor = unsafe { &mut *ctor_ptr };
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let proto_ptr = world.bigint_proto.as_ptr() as *mut JsObject;
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let proto = unsafe { &mut *proto_ptr };
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configure_native_constructor(ctor, oxide_builtins::bigint::bigint_constructor::<crate::vm::Vm> as *const (), 1);
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// BigInt.length = 1，属性 { [[Writable]]: false, [[Enumerable]]: false, [[Configurable]]: true }。
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let length_si = env.string_forge().intern("length").0;
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let length_shape = env.shape_forge().make_shape(ctor.shape_id(), length_si);
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ctor.set_shape_id(length_shape);
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ctor.ensure_hash_props().push(JsValue::int(1));
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let length_pos = ctor.hash_props_vec().map_or(0, |v| v.len() as u32).saturating_sub(1);
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ctor.set_data_meta(length_pos, PropAttributes::new(false, false, true));
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// 静态方法：asIntN / asUintN（length 均为 2）。
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apply_binding_table(
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env,
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ctor,
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&[
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("asIntN", oxide_builtins::bigint::bigint_as_int_n::<crate::vm::Vm> as *const (), 2),
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("asUintN", oxide_builtins::bigint::bigint_as_uint_n::<crate::vm::Vm> as *const (), 2),
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],
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);
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apply_binding_table(
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env,
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proto,
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&[
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("toString", oxide_builtins::bigint::bigint_to_string::<crate::vm::Vm> as *const (), 0),
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(
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"toLocaleString",
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oxide_builtins::bigint::bigint_to_locale_string::<crate::vm::Vm> as *const (),
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0,
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),
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("valueOf", oxide_builtins::bigint::bigint_value_of::<crate::vm::Vm> as *const (), 0),
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],
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);
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// BigInt.prototype[@@toStringTag] = "BigInt"，属性 { writable:false, enumerable:false, configurable:true }。
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let tag_si = env.string_forge().intern("BigInt").0;
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let tag_value = JsValue::perm_string(env.string_forge().string_ptr(tag_si));
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bind_well_known_data_property(env.core, proto, 9, tag_value, PropAttributes::new(false, false, true), env.realm_id);
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bind_global_value(env.core, global, "BigInt", JsValue::from_js_object(ctor_ptr));
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}
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