b99cc7d050
This is a continuation of the previous two commits. As allocating a JS cell already primarily involves a realm instead of a global object, and we'll need to pass one to the allocate() function itself eventually (it's bridged via the global object right now), the create() functions need to receive a realm as well. The plan is for this to be the highest-level function that actually receives a realm and passes it around, AOs on an even higher level will use the "current realm" concept via VM::current_realm() as that's what the spec assumes; passing around realms (or global objects, for that matter) on higher AO levels is pointless and unlike for allocating individual objects, which may happen outside of regular JS execution, we don't need control over the specific realm that is being used there.
43 lines
1.6 KiB
C++
43 lines
1.6 KiB
C++
/*
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* Copyright (c) 2021, 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/FlyString.h>
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#include <LibJS/Runtime/TypedArray.h>
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#include <LibWeb/Bindings/Wrapper.h>
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#include <LibWeb/Encoding/TextEncoder.h>
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namespace Web::Encoding {
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// https://encoding.spec.whatwg.org/#dom-textencoder-encode
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JS::Uint8Array* TextEncoder::encode(String const& input) const
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{
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auto& global_object = wrapper()->global_object();
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auto& realm = *global_object.associated_realm();
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// NOTE: The AK::String 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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FlyString const& TextEncoder::encoding()
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{
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static FlyString encoding = "utf-8"sv;
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return encoding;
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}
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}
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