mirror of
https://github.com/pjh456/OxideJS.git
synced 2026-10-24 02:31:13 +08:00
fix: with 三步序位复原并三法回落同类型构造
This commit is contained in:
@@ -137,6 +137,14 @@ fn create_typed_array<H: VmHost>(
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vm.alloc_object(obj)
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}
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/// TypedArrayCreateSameType 单长度参数形态:按 O 的类型建同长度新对象
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/// (规范上忽略 species,toReversed/toSorted/with 的交付语义)。
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fn create_same_type_typed_array<H: VmHost>(vm: &mut H, kind: TypedArrayKind, length: usize) -> *mut JsObject {
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let bpe = kind.bytes_per_element();
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let buffer = JsValue::from_js_object(new_array_buffer(vm, vec![0; length * bpe]));
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create_typed_array(vm, kind, buffer, 0, length)
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}
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fn typed_array_data_ptr(obj: &JsObject) -> Option<*mut TypedArrayData> {
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if !obj.is_typed_array_obj() {
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return None;
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@@ -1585,18 +1593,12 @@ pub fn typed_array_to_locale_string<H: VmHost>(vm: &mut H, args: &[u8]) -> Nativ
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NativeResult::Ok(vm.new_string(&parts.join(",")))
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}
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/// `%TypedArray%.prototype.toReversed()`:返回元素反转的、经 species 构造的
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/// 新 TypedArray(原对象不变)。
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/// `%TypedArray%.prototype.toReversed()`:返回元素反转的 TypedArrayCreateSameType
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/// 新 TypedArray(同类型、忽略 species;原对象不变)。
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pub fn typed_array_to_reversed<H: VmHost>(vm: &mut H, args: &[u8]) -> NativeResult {
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let this_val = vm.reg(if args.is_empty() { 0 } else { args[0] });
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let view = native_try!(get_typed_array_data(vm, this_val));
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let a = native_try!(typed_array_species_create(
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vm,
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this_val,
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view.kind,
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vec![JsValue::int(view.length as i32)],
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Some(view.length),
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));
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let a = JsValue::from_js_object(create_same_type_typed_array(vm, view.kind, view.length));
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for i in 0..view.length {
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let elem = native_try!(ta_read(vm, view, view.length - 1 - i));
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native_try!(set_typed_array_element(vm, a, i, elem));
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@@ -1604,8 +1606,8 @@ pub fn typed_array_to_reversed<H: VmHost>(vm: &mut H, args: &[u8]) -> NativeResu
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NativeResult::Ok(a)
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}
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/// `%TypedArray%.prototype.toSorted(comparefn)`:返回元素排序后的、经 species
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/// 构造的新 TypedArray(原对象不变)。
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/// `%TypedArray%.prototype.toSorted(comparefn)`:返回元素排序后的
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/// TypedArrayCreateSameType 新 TypedArray(同类型、忽略 species;原对象不变)。
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pub fn typed_array_to_sorted<H: VmHost>(vm: &mut H, args: &[u8]) -> NativeResult {
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let this_val = vm.reg(if args.is_empty() { 0 } else { args[0] });
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let view = native_try!(get_typed_array_data(vm, this_val));
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@@ -1665,22 +1667,17 @@ pub fn typed_array_to_sorted<H: VmHost>(vm: &mut H, args: &[u8]) -> NativeResult
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if let Some(err) = sort_error {
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return NativeResult::Err(err);
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}
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let a = native_try!(typed_array_species_create(
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vm,
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this_val,
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view.kind,
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vec![JsValue::int(vals.len() as i32)],
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Some(vals.len()),
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));
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let a = JsValue::from_js_object(create_same_type_typed_array(vm, view.kind, vals.len()));
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for (k, v) in vals.into_iter().enumerate() {
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native_try!(set_typed_array_element(vm, a, k, v));
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}
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NativeResult::Ok(a)
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}
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/// `%TypedArray%.prototype.with(index, value)`:返回替换指定索引元素后的、经
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/// species 构造的新 TypedArray;负索引从尾部折算,折算后越界抛 RangeError
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/// (先于 value 的类型转换)。
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/// `%TypedArray%.prototype.with(index, value)`:返回替换指定索引元素后的
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/// TypedArrayCreateSameType 新 TypedArray(同类型、忽略 species)。
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/// 负索引从尾部折算;value 的类型转换(ToNumber/ToBigInt,副作用对后续源元素读
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/// 可见)先于越界 RangeError。
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pub fn typed_array_with<H: VmHost>(vm: &mut H, args: &[u8]) -> NativeResult {
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let this_val = vm.reg(if args.is_empty() { 0 } else { args[0] });
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let view = native_try!(get_typed_array_data(vm, this_val));
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@@ -1701,21 +1698,17 @@ pub fn typed_array_with<H: VmHost>(vm: &mut H, args: &[u8]) -> NativeResult {
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} else {
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view.length as f64 + relative_index
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};
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// 规范步 7/8:value 先转换(副作用/抛错原样上抛),步 9 才做越界检查。
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let value = if args.len() > 2 { vm.reg(args[2]) } else { JsValue::undefined() };
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let replacement = native_try!(ta_element_value(vm, view.kind, value));
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if actual_index.is_nan() || actual_index < 0.0 || actual_index >= view.length as f64 {
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return NativeResult::Err(range_error(vm, "Invalid typed array index"));
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}
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let index = actual_index as usize;
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let value = if args.len() > 2 { vm.reg(args[2]) } else { JsValue::undefined() };
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let a = native_try!(typed_array_species_create(
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vm,
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this_val,
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view.kind,
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vec![JsValue::int(view.length as i32)],
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Some(view.length),
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));
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// 目标索引写 value(经目标元素类型转换),其余索引顺序拷源元素。
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let a = JsValue::from_js_object(create_same_type_typed_array(vm, view.kind, view.length));
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// 目标索引写已转换的 value(副作用已先于源读发生),其余索引顺序拷源元素。
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for i in 0..view.length {
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let elem = if i == index { value } else { native_try!(ta_read(vm, view, i)) };
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let elem = if i == index { replacement } else { native_try!(ta_read(vm, view, i)) };
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native_try!(set_typed_array_element(vm, a, i, elem));
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}
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NativeResult::Ok(a)
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@@ -552,8 +552,8 @@ fn typed_array_species_insufficient_length_throws() {
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#[test]
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fn typed_array_species_non_ctor_and_non_ta_throws() {
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// species 构造结果非 TypedArray(filter 得空函数构造体 / toSorted 得普通对象)
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// 抛 TypeError。
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// species 构造结果非 TypedArray(filter 得空函数构造体 / map 得普通对象)
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// 抛 TypeError(toReversed/toSorted/with 走 SameType 忽略 species,不在其列)。
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let mut vm = Vm::new();
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let result = eval(
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&mut vm,
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@@ -564,7 +564,7 @@ fn typed_array_species_non_ctor_and_non_ta_throws() {
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catch (e) { t = e instanceof TypeError; } \
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var r = new Uint8Array(1); \
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r.constructor = { [Symbol.species]: function () { return {}; } }; \
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try { r.toSorted(); t = t && false; } \
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try { r.map(function (v) { return v; }); t = t && false; } \
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catch (e) { t = t && e instanceof TypeError; } \
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return t; })()",
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)
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@@ -653,17 +653,21 @@ fn typed_array_species_use_default_ctor() {
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}
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#[test]
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fn typed_array_species_immutable_methods_same_shape() {
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// toReversed/toSorted/with 同走 species 构造(长度 = 源长度)。
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fn typed_array_same_type_immutable_methods_ignore_species() {
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// toReversed/toSorted/with 走 TypedArrayCreateSameType(规范语义:忽略
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// species):species 构造器不被调用,结果为接收者同类型的内建实例。
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let mut vm = Vm::new();
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let result = eval(
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&mut vm,
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"(function () { var ta = new Uint8Array([1, 2, 3]); var seen; \
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"(function () { var ta = new Uint8Array([1, 2, 3]); var called; \
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ta.constructor = { [Symbol.species]: function (n) { \
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seen = n; return new Uint8Array(n); } }; \
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called = true; return new Int32Array(n); } }; \
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var r = ta.toReversed(); var so = ta.toSorted(); var w = ta.with(1, 9); \
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return r.length === 3 && r.at(0) === 3 && so.at(0) === 1 && \
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w.at(1) === 9 && seen === 3; })()",
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return called === undefined && \
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Object.getPrototypeOf(r) === Uint8Array.prototype && \
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Object.getPrototypeOf(so) === Uint8Array.prototype && \
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Object.getPrototypeOf(w) === Uint8Array.prototype && \
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r.length === 3 && r.at(0) === 3 && so.at(0) === 1 && w.at(1) === 9; })()",
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)
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.unwrap();
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assert!(result.as_bool());
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