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LibJS: Convert ArrayBuffer construction to ThrowCompletionOr

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This also allows us to create TypedArrays with an existing buffer thus
clearing up an additional FIXME in TextEncoder.
This commit is contained in:
davidot 2022-02-07 13:34:32 +01:00 • committed by Linus Groh
parent 4136cbdb09
commit de90d54be0
7 changed files with 30 additions and 26 deletions
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8
Userland/Libraries/LibWeb/Encoding/TextEncoder.cpp
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@ -27,11 +27,9 @@ JS::Uint8Array* TextEncoder::encode(String const& input) const
// 4. If result is finished, then convert output into a byte sequence and return a Uint8Array object wrapping an ArrayBuffer containing output.
auto byte_buffer = input.to_byte_buffer();
// FIXME: Support `TypedArray::create()` with existing `ArrayBuffer`, so that we don't have to allocate two `ByteBuffer`s.
auto* typed_array = JS::Uint8Array::create(global_object, byte_buffer.size());
typed_array->viewed_array_buffer()->buffer() = move(byte_buffer);
return typed_array;
auto array_length = byte_buffer.size();
auto* array_buffer = JS::ArrayBuffer::create(global_object, move(byte_buffer));
return JS::Uint8Array::create(global_object, array_length, *array_buffer);
}
// https://encoding.spec.whatwg.org/#dom-textencoder-encoding

5
Userland/Libraries/LibWeb/HTML/ImageData.cpp
View file

@ -20,9 +20,10 @@ RefPtr<ImageData> ImageData::create_with_size(JS::GlobalObject& global_object, i
dbgln("Creating ImageData with {}x{}", width, height);
auto* data = JS::Uint8ClampedArray::create(global_object, width * height * 4);
if (!data)
auto data_or_error = JS::Uint8ClampedArray::create(global_object, width * height * 4);
if (data_or_error.is_error())
return nullptr;
auto* data = data_or_error.release_value();
auto data_handle = JS::make_handle(data);