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LibJS: Propagate OOM in GetModifySetValueInBuffer AO

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Shannon Booth 2023-06-28 20:28:32 +12:00 • committed by Linus Groh
parent 81c8e642b9
commit 49c8d22f50
2 changed files with 6 additions and 7 deletions
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9
Userland/Libraries/LibJS/Runtime/ArrayBuffer.h
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@ -76,7 +76,7 @@ public:
template<typename type>
void set_value(size_t byte_index, Value value, bool is_typed_array, Order, bool is_little_endian = true);
template<typename T>
Value get_modify_set_value(size_t byte_index, Value value, ReadWriteModifyFunction operation, bool is_little_endian = true);
ThrowCompletionOr<Value> get_modify_set_value(size_t byte_index, Value value, ReadWriteModifyFunction operation, bool is_little_endian = true);
private:
ArrayBuffer(ByteBuffer buffer, Object& prototype);
@ -274,16 +274,15 @@ void ArrayBuffer::set_value(size_t byte_index, Value value, [[maybe_unused]] boo
// 25.1.2.13 GetModifySetValueInBuffer ( arrayBuffer, byteIndex, type, value, op [ , isLittleEndian ] ), https://tc39.es/ecma262/#sec-getmodifysetvalueinbuffer
template<typename T>
Value ArrayBuffer::get_modify_set_value(size_t byte_index, Value value, ReadWriteModifyFunction operation, bool is_little_endian)
ThrowCompletionOr<Value> ArrayBuffer::get_modify_set_value(size_t byte_index, Value value, ReadWriteModifyFunction operation, bool is_little_endian)
{
auto& vm = this->vm();
auto raw_bytes = numeric_to_raw_bytes<T>(vm, value, is_little_endian).release_allocated_value_but_fixme_should_propagate_errors();
auto raw_bytes = MUST_OR_THROW_OOM(numeric_to_raw_bytes<T>(vm, value, is_little_endian));
// FIXME: Check for shared buffer
// FIXME: Propagate errors.
auto raw_bytes_read = MUST(buffer_impl().slice(byte_index, sizeof(T)));
auto raw_bytes_read = TRY_OR_THROW_OOM(vm, buffer_impl().slice(byte_index, sizeof(T)));
auto raw_bytes_modified = operation(raw_bytes_read, raw_bytes);
raw_bytes_modified.span().copy_to(buffer_impl().span().slice(byte_index));