Everywhere: Hoist the Libraries folder to the top-level

Author: https://github.com/trflynn89 Commit: 93712b24bf Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2256 Reviewed-by: https://github.com/sideshowbarker
2025-08-10 18:19:03 +00:00 · 2024-11-09 12:25:08 -05:00 · 2024-11-09 12:25:08 -05:00 · 93712b24bf · 2024-11-10 11:51:52 +00:00
commit 93712b24bf
parent 950e819ee7
4547 changed files with 104 additions and 113 deletions
--- a/Libraries/LibWeb/Streams/ReadableStreamBYOBReader.cpp
+++ b/Libraries/LibWeb/Streams/ReadableStreamBYOBReader.cpp
@ -0,0 +1,182 @@
+/*
+ * Copyright (c) 2023, Matthew Olsson <mattco@serenityos.org>
+ * Copyright (c) 2023, Shannon Booth <shannon@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibJS/Runtime/PromiseCapability.h>
+#include <LibJS/Runtime/TypedArray.h>
+#include <LibWeb/Bindings/Intrinsics.h>
+#include <LibWeb/Bindings/ReadableStreamBYOBReaderPrototype.h>
+#include <LibWeb/Streams/AbstractOperations.h>
+#include <LibWeb/Streams/ReadableStream.h>
+#include <LibWeb/Streams/ReadableStreamBYOBReader.h>
+#include <LibWeb/WebIDL/Buffers.h>
+#include <LibWeb/WebIDL/ExceptionOr.h>
+
+namespace Web::Streams {
+
+JS_DEFINE_ALLOCATOR(ReadableStreamBYOBReader);
+
+ReadableStreamBYOBReader::ReadableStreamBYOBReader(JS::Realm& realm)
+    : Bindings::PlatformObject(realm)
+    , ReadableStreamGenericReaderMixin(realm)
+{
+}
+
+void ReadableStreamBYOBReader::initialize(JS::Realm& realm)
+{
+    Base::initialize(realm);
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(ReadableStreamBYOBReader);
+}
+
+// https://streams.spec.whatwg.org/#byob-reader-constructor
+WebIDL::ExceptionOr<JS::NonnullGCPtr<ReadableStreamBYOBReader>> ReadableStreamBYOBReader::construct_impl(JS::Realm& realm, JS::NonnullGCPtr<ReadableStream> stream)
+{
+    auto reader = realm.heap().allocate<ReadableStreamBYOBReader>(realm, realm);
+
+    // 1. Perform ? SetUpReadableStreamBYOBReader(this, stream).
+    TRY(set_up_readable_stream_byob_reader(reader, *stream));
+
+    return reader;
+}
+
+// https://streams.spec.whatwg.org/#byob-reader-release-lock
+void ReadableStreamBYOBReader::release_lock()
+{
+    // 1. If this.[[stream]] is undefined, return.
+    if (!m_stream)
+        return;
+
+    // 2. Perform ! ReadableStreamBYOBReaderRelease(this).
+    readable_stream_byob_reader_release(*this);
+}
+
+void ReadableStreamBYOBReader::visit_edges(Cell::Visitor& visitor)
+{
+    Base::visit_edges(visitor);
+    ReadableStreamGenericReaderMixin::visit_edges(visitor);
+    visitor.visit(m_read_into_requests);
+}
+
+class BYOBReaderReadIntoRequest : public ReadIntoRequest {
+    JS_CELL(BYOBReaderReadIntoRequest, ReadIntoRequest);
+    JS_DECLARE_ALLOCATOR(BYOBReaderReadIntoRequest);
+
+public:
+    BYOBReaderReadIntoRequest(JS::Realm& realm, WebIDL::Promise& promise)
+        : m_realm(realm)
+        , m_promise(promise)
+    {
+    }
+
+    // chunk steps, given chunk
+    virtual void on_chunk(JS::Value chunk) override
+    {
+        // 1. Resolve promise with «[ "value" → chunk, "done" → false ]».
+        WebIDL::resolve_promise(m_realm, m_promise, JS::create_iterator_result_object(m_realm->vm(), chunk, false));
+    }
+
+    // close steps, given chunk
+    virtual void on_close(JS::Value chunk) override
+    {
+        // 1. Resolve promise with «[ "value" → chunk, "done" → true ]».
+        WebIDL::resolve_promise(m_realm, m_promise, JS::create_iterator_result_object(m_realm->vm(), chunk, true));
+    }
+
+    // error steps, given e
+    virtual void on_error(JS::Value error) override
+    {
+        // 1. Reject promise with e.
+        WebIDL::reject_promise(m_realm, m_promise, error);
+    }
+
+private:
+    virtual void visit_edges(Visitor& visitor) override
+    {
+        Base::visit_edges(visitor);
+        visitor.visit(m_realm);
+        visitor.visit(m_promise);
+    }
+
+    JS::NonnullGCPtr<JS::Realm> m_realm;
+    JS::NonnullGCPtr<WebIDL::Promise> m_promise;
+};
+
+JS_DEFINE_ALLOCATOR(BYOBReaderReadIntoRequest);
+
+// https://streams.spec.whatwg.org/#byob-reader-read
+JS::NonnullGCPtr<WebIDL::Promise> ReadableStreamBYOBReader::read(JS::Handle<WebIDL::ArrayBufferView>& view, ReadableStreamBYOBReaderReadOptions options)
+{
+    auto& realm = this->realm();
+
+    // 1. If view.[[ByteLength]] is 0, return a promise rejected with a TypeError exception.
+    if (view->byte_length() == 0) {
+        WebIDL::SimpleException exception { WebIDL::SimpleExceptionType::TypeError, "Cannot read in an empty buffer"sv };
+        return WebIDL::create_rejected_promise_from_exception(realm, move(exception));
+    }
+
+    // 2. If view.[[ViewedArrayBuffer]].[[ArrayBufferByteLength]] is 0, return a promise rejected with a TypeError exception.
+    if (view->viewed_array_buffer()->byte_length() == 0) {
+        WebIDL::SimpleException exception { WebIDL::SimpleExceptionType::TypeError, "Cannot read in an empty buffer"sv };
+        return WebIDL::create_rejected_promise_from_exception(realm, move(exception));
+    }
+
+    // 3. If ! IsDetachedBuffer(view.[[ViewedArrayBuffer]]) is true, return a promise rejected with a TypeError exception.
+    if (view->viewed_array_buffer()->is_detached()) {
+        WebIDL::SimpleException exception { WebIDL::SimpleExceptionType::TypeError, "Cannot read in a detached buffer"sv };
+        return WebIDL::create_rejected_promise_from_exception(realm, move(exception));
+    }
+
+    // 4. If options["min"] is 0, return a promise rejected with a TypeError exception.
+    if (options.min == 0) {
+        WebIDL::SimpleException exception { WebIDL::SimpleExceptionType::TypeError, "options[\"min\'] cannot have a value of 0."sv };
+        return WebIDL::create_rejected_promise_from_exception(realm, move(exception));
+    }
+
+    // 5. If view has a [[TypedArrayName]] internal slot,
+    if (view->is_typed_array_base()) {
+        auto const& typed_array = *view->bufferable_object().get<JS::NonnullGCPtr<JS::TypedArrayBase>>();
+
+        // 1. If options["min"] > view.[[ArrayLength]], return a promise rejected with a RangeError exception.
+        if (options.min > typed_array.array_length().length()) {
+            WebIDL::SimpleException exception { WebIDL::SimpleExceptionType::RangeError, "options[\"min\"] cannot be larger than the length of the view."sv };
+            return WebIDL::create_rejected_promise_from_exception(realm, move(exception));
+        }
+    }
+
+    // 6. Otherwise (i.e., it is a DataView),
+    if (view->is_data_view()) {
+        // 1. If options["min"] > view.[[ByteLength]], return a promise rejected with a RangeError exception.
+        if (options.min > view->byte_length()) {
+            WebIDL::SimpleException exception { WebIDL::SimpleExceptionType::RangeError, "options[\"min\"] cannot be larger than the length of the view."sv };
+            return WebIDL::create_rejected_promise_from_exception(realm, move(exception));
+        }
+    }
+
+    // 7. If this.[[stream]] is undefined, return a promise rejected with a TypeError exception.
+    if (!m_stream) {
+        WebIDL::SimpleException exception { WebIDL::SimpleExceptionType::TypeError, "Cannot read from an empty stream"sv };
+        return WebIDL::create_rejected_promise_from_exception(realm, move(exception));
+    }
+
+    // 8. Let promise be a new promise.
+    auto promise_capability = WebIDL::create_promise(realm);
+
+    // 9. Let readIntoRequest be a new read-into request with the following items:
+    //    chunk steps, given chunk
+    //        Resolve promise with «[ "value" → chunk, "done" → false ]».
+    //    close steps, given chunk
+    //        Resolve promise with «[ "value" → chunk, "done" → true ]».
+    //    error steps, given e
+    //        Reject promise with e.
+    auto read_into_request = heap().allocate_without_realm<BYOBReaderReadIntoRequest>(realm, promise_capability);
+
+    // 10. Perform ! ReadableStreamBYOBReaderRead(this, view, options["min"], readIntoRequest).
+    readable_stream_byob_reader_read(*this, *view, options.min, *read_into_request);
+
+    // 11. Return promise.
+    return promise_capability;
+}
+}