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LibJS: Make variables in InitializeTypedArrayFromTypedArray() match spec

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This makes it easier to follow the code and compare it to the spec.
This commit is contained in:
Linus Groh 2021-06-27 20:51:51 +01:00
parent abb5a1f05c
commit 48e7fd52e7
Notes: sideshowbarker 2024-07-18 11:26:39 +09:00 
Author: https://github.com/linusg
Commit: https://github.com/SerenityOS/serenity/commit/48e7fd52e74
1 changed files with 13 additions and 12 deletions
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25
Userland/Libraries/LibJS/Runtime/TypedArray.cpp
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@ -88,16 +88,16 @@ static void initialize_typed_array_from_typed_array(GlobalObject& global_object,
if (vm.exception())
return;
auto* source_array_buffer = src_array.viewed_array_buffer();
VERIFY(source_array_buffer);
if (source_array_buffer->is_detached()) {
auto* src_data = src_array.viewed_array_buffer();
VERIFY(src_data);
if (src_data->is_detached()) {
vm.throw_exception<TypeError>(global_object, ErrorType::DetachedArrayBuffer);
return;
}
auto src_array_length = src_array.array_length();
auto dest_element_size = dest_array.element_size();
Checked byte_length = src_array_length * dest_element_size;
auto element_length = src_array.array_length();
auto element_size = dest_array.element_size();
Checked byte_length = element_size * element_length;
if (byte_length.has_overflow()) {
vm.throw_exception<RangeError>(global_object, ErrorType::InvalidLength, "typed array");
return;
@ -105,13 +105,14 @@ static void initialize_typed_array_from_typed_array(GlobalObject& global_object,
// FIXME: 17.b If IsDetachedBuffer(array_buffer) is true, throw a TypeError exception.
// FIXME: 17.c If src_array.[[ContentType]] != dest_array.[[ContentType]], throw a TypeError exception.
auto array_buffer = ArrayBuffer::create(global_object, byte_length.value());
dest_array.set_array_length(src_array_length);
dest_array.set_viewed_array_buffer(array_buffer);
dest_array.set_byte_offset(0);
dest_array.set_byte_length(array_buffer->byte_length());
auto data = ArrayBuffer::create(global_object, byte_length.value());
for (u32 i = 0; i < src_array_length; i++) {
dest_array.set_viewed_array_buffer(data);
dest_array.set_byte_length(byte_length.value());
dest_array.set_byte_offset(0);
dest_array.set_array_length(element_length);
for (u32 i = 0; i < element_length; i++) {
Value v;
#undef __JS_ENUMERATE
#define __JS_ENUMERATE(ClassName, snake_name, PrototypeName, ConstructorName, ArrayType) \