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LibJS: Implement the missing step 20 in %TypedArray%.prototype.set

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Idan Horowitz 2022-02-08 21:36:58 +02:00 committed by Linus Groh
parent 20d3869182
commit 9839e2eeb6
Notes: sideshowbarker 2024-07-17 19:08:29 +09:00 
Author: https://github.com/IdanHo
Commit: https://github.com/SerenityOS/serenity/commit/9839e2eeb6
Pull-request: https://github.com/SerenityOS/serenity/pull/12365
Reviewed-by: https://github.com/alimpfard
Reviewed-by: https://github.com/linusg ✅
1 changed files with 6 additions and 1 deletions
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7
Userland/Libraries/LibJS/Runtime/TypedArrayPrototype.cpp
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@ -7,6 +7,7 @@
*/
#include <LibJS/Runtime/AbstractOperations.h>
#include <LibJS/Runtime/ArrayBufferConstructor.h>
#include <LibJS/Runtime/ArrayIterator.h>
#include <LibJS/Runtime/GlobalObject.h>
#include <LibJS/Runtime/TypedArray.h>
@ -694,10 +695,14 @@ JS_DEFINE_NATIVE_FUNCTION(TypedArrayPrototype::set)
// 20. If same is true, then
if (same) {
// a. Let srcByteLength be source.[[ByteLength]].
auto source_byte_length = source_typed_array.byte_length();
// b. Set srcBuffer to ? CloneArrayBuffer(srcBuffer, srcByteOffset, srcByteLength, %ArrayBuffer%).
source_buffer = TRY(clone_array_buffer(global_object, *source_buffer, source_byte_offset, source_byte_length, *global_object.array_buffer_constructor()));
// c. NOTE: %ArrayBuffer% is used to clone srcBuffer because is it known to not have any observable side-effects.
// d. Let srcByteIndex be 0.
TODO();
source_byte_index = 0;
} else {
// 21. Else, let srcByteIndex be srcByteOffset.
source_byte_index = source_byte_offset;