2692db8699
Note that as of this commit, there aren't any such throwers, and the call site in Heap::allocate will drop exceptions on the floor. This commit only serves to change the declaration of the overrides, make sure they return an empty value, and to propagate OOM errors frm their base initialize invocations.
60 lines
2 KiB
C++
60 lines
2 KiB
C++
/*
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* Copyright (c) 2021-2022, Linus Groh <linusg@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/DeprecatedFlyString.h>
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#include <LibJS/Runtime/TypedArray.h>
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#include <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/Encoding/TextEncoder.h>
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namespace Web::Encoding {
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JS::NonnullGCPtr<TextEncoder> TextEncoder::construct_impl(JS::Realm& realm)
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{
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return realm.heap().allocate<TextEncoder>(realm, realm);
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}
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TextEncoder::TextEncoder(JS::Realm& realm)
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: PlatformObject(realm)
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{
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}
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TextEncoder::~TextEncoder() = default;
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JS::ThrowCompletionOr<void> TextEncoder::initialize(JS::Realm& realm)
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{
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MUST_OR_THROW_OOM(Base::initialize(realm));
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set_prototype(&Bindings::ensure_web_prototype<Bindings::TextEncoderPrototype>(realm, "TextEncoder"));
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return {};
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}
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// https://encoding.spec.whatwg.org/#dom-textencoder-encode
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JS::Uint8Array* TextEncoder::encode(DeprecatedString const& input) const
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{
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// NOTE: The AK::DeprecatedString returned from PrimitiveString::string() is always UTF-8, regardless of the internal string type, so most of these steps are no-ops.
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// 1. Convert input to an I/O queue of scalar values.
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// 2. Let output be the I/O queue of bytes « end-of-queue ».
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// 3. While true:
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// 1. Let item be the result of reading from input.
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// 2. Let result be the result of processing an item with item, an instance of the UTF-8 encoder, input, output, and "fatal".
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// 3. Assert: result is not an error.
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// 4. If result is finished, then convert output into a byte sequence and return a Uint8Array object wrapping an ArrayBuffer containing output.
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auto byte_buffer = input.to_byte_buffer();
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auto array_length = byte_buffer.size();
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auto array_buffer = JS::ArrayBuffer::create(realm(), move(byte_buffer));
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return JS::Uint8Array::create(realm(), array_length, *array_buffer);
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}
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// https://encoding.spec.whatwg.org/#dom-textencoder-encoding
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DeprecatedFlyString const& TextEncoder::encoding()
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{
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static DeprecatedFlyString encoding = "utf-8"sv;
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return encoding;
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}
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}
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