ladybird/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Bodies.cpp

/*
 * Copyright (c) 2022, Linus Groh <linusg@serenityos.org>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#include <LibJS/Runtime/PromiseCapability.h>
#include <LibWeb/Bindings/MainThreadVM.h>
#include <LibWeb/Fetch/Infrastructure/HTTP/Bodies.h>
#include <LibWeb/WebIDL/Promise.h>

namespace Web::Fetch::Infrastructure {

Body::Body(JS::Handle<Streams::ReadableStream> stream)
    : m_stream(move(stream))
{
}

Body::Body(JS::Handle<Streams::ReadableStream> stream, SourceType source, Optional<u64> length)
    : m_stream(move(stream))
    , m_source(move(source))
    , m_length(move(length))
{
}

// https://fetch.spec.whatwg.org/#concept-body-clone
WebIDL::ExceptionOr<Body> Body::clone() const
{
    // To clone a body body, run these steps:

    auto& vm = Bindings::main_thread_vm();
    auto& realm = *vm.current_realm();

    // FIXME: 1. Let « out1, out2 » be the result of teeing body’s stream.
    // FIXME: 2. Set body’s stream to out1.
    auto* out2 = vm.heap().allocate<Streams::ReadableStream>(realm, realm);

    // 3. Return a body whose stream is out2 and other members are copied from body.
    return Body { JS::make_handle(out2), m_source, m_length };
}

// https://fetch.spec.whatwg.org/#fully-reading-body-as-promise
JS::NonnullGCPtr<JS::PromiseCapability> Body::fully_read_as_promise() const
{
    auto& vm = Bindings::main_thread_vm();
    auto& realm = *vm.current_realm();

    // FIXME: Implement the streams spec - this is completely made up for now :^)
    if (auto const* byte_buffer = m_source.get_pointer<ByteBuffer>()) {
        auto result = String::copy(*byte_buffer);
        return WebIDL::create_resolved_promise(realm, JS::js_string(vm, move(result)));
    }
    // Empty, Blob, FormData
    return WebIDL::create_rejected_promise(realm, JS::InternalError::create(realm, "Reading body isn't fully implemented"sv));
}

}
-												LibWeb: Add definitions from '2.2.4. Bodies' in the Fetch spec

...at least the ones that don't require an implementation of the Streams
spec :^)

											
										
										
											2022-07-12 18:04:24 +01:00
+								/*
 								 * Copyright (c) 2022, Linus Groh <linusg@serenityos.org>
 								 *
 								 * SPDX-License-Identifier: BSD-2-Clause
 								 */
-												LibJS: Move PromiseCapability into its own cpp/h file

This is not strictly connected to PromiseReaction in any way.
Preparation before doing some actual work on it :^)

											
										
										
											2022-10-02 10:59:22 +01:00
+								#include <LibJS/Runtime/PromiseCapability.h>
-												LibWeb: Stub out Fetch::Infrastructure::Body::clone()

											
										
										
											2022-09-25 19:25:53 +01:00
+								#include <LibWeb/Bindings/MainThreadVM.h>
-												LibWeb: Add definitions from '2.2.4. Bodies' in the Fetch spec

...at least the ones that don't require an implementation of the Streams
spec :^)

											
										
										
											2022-07-12 18:04:24 +01:00
+								#include <LibWeb/Fetch/Infrastructure/HTTP/Bodies.h>
-												LibWeb: Stub out Fetch::Infrastructure::Body::fully_read_as_promise()

											
										
										
											2022-09-25 19:27:02 +01:00
+								#include <LibWeb/WebIDL/Promise.h>
-												LibWeb: Add definitions from '2.2.4. Bodies' in the Fetch spec

...at least the ones that don't require an implementation of the Streams
spec :^)

											
										
										
											2022-07-12 18:04:24 +01:00
-												LibWeb: Move Fetch infra into the Web::Fetch::Infrastructure namespace

The Fetch spec unfortunately will cause a name clash between the Request
concept and the Request JS object - both cannot live in the Web::Fetch
namespace, and WrapperGenerator generally assumes `Web::<Name>` for
things living in the `<Name>/` subdirectory, so let's instead move infra
code into its own namespace - it already sits in a (sub-)subdirectory
anyway.

											
										
										
											2022-07-17 23:52:02 +01:00
+								namespace Web::Fetch::Infrastructure {
-												LibWeb: Add definitions from '2.2.4. Bodies' in the Fetch spec

...at least the ones that don't require an implementation of the Streams
spec :^)

											
										
										
											2022-07-12 18:04:24 +01:00
-												LibWeb: Remove ReadableStreamDummy in favor of ReadableStream

											
										
										
											2022-09-21 23:54:04 +01:00
+								Body::Body(JS::Handle<Streams::ReadableStream> stream)
 								    : m_stream(move(stream))
-												LibWeb: Add definitions from '2.2.4. Bodies' in the Fetch spec

...at least the ones that don't require an implementation of the Streams
spec :^)

											
										
										
											2022-07-12 18:04:24 +01:00
+								{
 								}
-												LibWeb: Remove ReadableStreamDummy in favor of ReadableStream

											
										
										
											2022-09-21 23:54:04 +01:00
+								Body::Body(JS::Handle<Streams::ReadableStream> stream, SourceType source, Optional<u64> length)
 								    : m_stream(move(stream))
-												LibWeb: Add definitions from '2.2.4. Bodies' in the Fetch spec

...at least the ones that don't require an implementation of the Streams
spec :^)

											
										
										
											2022-07-12 18:04:24 +01:00
+								    , m_source(move(source))
 								    , m_length(move(length))
 								{
 								}
-												LibWeb: Stub out Fetch::Infrastructure::Body::clone()

											
										
										
											2022-09-25 19:25:53 +01:00
+								// https://fetch.spec.whatwg.org/#concept-body-clone
 								WebIDL::ExceptionOr<Body> Body::clone() const
 								{
 								    // To clone a body body, run these steps:
 								    auto& vm = Bindings::main_thread_vm();
 								    auto& realm = *vm.current_realm();
 								    // FIXME: 1. Let « out1, out2 » be the result of teeing body’s stream.
 								    // FIXME: 2. Set body’s stream to out1.
-												LibWeb: Remove unecessary dependence on Window from assorted classes

These classes only needed Window to get at its realm. Pass a realm
directly to construct Crypto, Encoding, HRT, IntersectionObserver,
NavigationTiming, Page, RequestIdleCallback, Selection, Streams, URL,
and XML classes.

											
										
										
											2022-09-25 18:11:21 -06:00
+								    auto* out2 = vm.heap().allocate<Streams::ReadableStream>(realm, realm);
-												LibWeb: Stub out Fetch::Infrastructure::Body::clone()

											
										
										
											2022-09-25 19:25:53 +01:00
 								    // 3. Return a body whose stream is out2 and other members are copied from body.
 								    return Body { JS::make_handle(out2), m_source, m_length };
 								}
-												LibWeb: Stub out Fetch::Infrastructure::Body::fully_read_as_promise()

											
										
										
											2022-09-25 19:27:02 +01:00
+								// https://fetch.spec.whatwg.org/#fully-reading-body-as-promise
-												LibJS: Make PromiseCapability GC-allocated

A struct with three raw pointers to other GC'd types is a pretty big
liability, let's just turn this into a Cell itself.
This comes with the additional benefit of being able to capture it in
a lambda effortlessly, without having to create handles for individual
members.

											
										
										
											2022-10-02 12:11:30 +01:00
+								JS::NonnullGCPtr<JS::PromiseCapability> Body::fully_read_as_promise() const
-												LibWeb: Stub out Fetch::Infrastructure::Body::fully_read_as_promise()

											
										
										
											2022-09-25 19:27:02 +01:00
+								{
 								    auto& vm = Bindings::main_thread_vm();
 								    auto& realm = *vm.current_realm();
 								    // FIXME: Implement the streams spec - this is completely made up for now :^)
 								    if (auto const* byte_buffer = m_source.get_pointer<ByteBuffer>()) {
 								        auto result = String::copy(*byte_buffer);
 								        return WebIDL::create_resolved_promise(realm, JS::js_string(vm, move(result)));
 								    }
 								    // Empty, Blob, FormData
 								    return WebIDL::create_rejected_promise(realm, JS::InternalError::create(realm, "Reading body isn't fully implemented"sv));
 								}
-												LibWeb: Add definitions from '2.2.4. Bodies' in the Fetch spec

...at least the ones that don't require an implementation of the Streams
spec :^)

											
										
										
											2022-07-12 18:04:24 +01:00
+								}