ladybird/Libraries/LibJS/Runtime/Uint8Array.h
Andreas Kling c1c24e8fd6 LibJS: Use non-copying GetUint8ArrayBytes() in Uint8Array.toBase64()
If the ArrayBuffer we're looking at is non-shared, we can simply get a
view onto the underlying bytes and pass that to the Base64 encoder.
2025-11-29 09:39:43 -05:00

58 lines
1.6 KiB
C++

/*
* Copyright (c) 2024-2025, Tim Flynn <trflynn89@ladybird.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Base64.h>
#include <AK/ByteBuffer.h>
#include <AK/Optional.h>
#include <AK/StringView.h>
#include <LibGC/Ptr.h>
#include <LibJS/Forward.h>
#include <LibJS/Runtime/Completion.h>
#include <LibJS/Runtime/Value.h>
namespace JS {
class Uint8ArrayConstructorHelpers {
public:
static void initialize(Realm&, Object& constructor);
private:
JS_DECLARE_NATIVE_FUNCTION(from_base64);
JS_DECLARE_NATIVE_FUNCTION(from_hex);
};
class Uint8ArrayPrototypeHelpers {
public:
static void initialize(Realm&, Object& prototype);
private:
JS_DECLARE_NATIVE_FUNCTION(set_from_base64);
JS_DECLARE_NATIVE_FUNCTION(set_from_hex);
JS_DECLARE_NATIVE_FUNCTION(to_base64);
JS_DECLARE_NATIVE_FUNCTION(to_hex);
};
enum class Alphabet {
Base64,
Base64URL,
};
struct DecodeResult {
size_t read { 0 }; // [[Read]]
ByteBuffer bytes; // [[Bytes]]
Optional<Completion> error; // [[Error]]
};
ThrowCompletionOr<GC::Ref<TypedArrayBase>> validate_uint8_array(VM&);
ThrowCompletionOr<ByteBuffer> get_uint8_array_bytes(VM&, TypedArrayBase const&);
ThrowCompletionOr<ReadonlyBytes> get_uint8_array_bytes_view(VM&, TypedArrayBase const&);
void set_uint8_array_bytes(TypedArrayBase&, ReadonlyBytes);
DecodeResult from_base64(VM&, StringView string, Alphabet alphabet, AK::LastChunkHandling last_chunk_handling, Optional<size_t> max_length = {});
DecodeResult from_hex(VM&, StringView string, Optional<size_t> max_length = {});
}