mirror of
https://github.com/RGBCube/serenity
synced 2025-07-25 20:47:45 +00:00
LibWeb: Add UnderlyingSource struct for ReadableStream constructor
This commit is contained in:
parent
bc9919178e
commit
66dec1bf54
4 changed files with 92 additions and 0 deletions
|
@ -459,6 +459,7 @@ set(SOURCES
|
|||
Streams/ReadableStreamDefaultController.cpp
|
||||
Streams/ReadableStreamDefaultReader.cpp
|
||||
Streams/ReadableStreamGenericReader.cpp
|
||||
Streams/UnderlyingSource.cpp
|
||||
SVG/AttributeNames.cpp
|
||||
SVG/AttributeParser.cpp
|
||||
SVG/SVGAnimatedLength.cpp
|
||||
|
|
|
@ -422,6 +422,7 @@ class ReadableStreamDefaultController;
|
|||
class ReadableStreamDefaultReader;
|
||||
class ReadableStreamGenericReaderMixin;
|
||||
class ReadRequest;
|
||||
struct UnderlyingSource;
|
||||
}
|
||||
|
||||
namespace Web::SVG {
|
||||
|
|
59
Userland/Libraries/LibWeb/Streams/UnderlyingSource.cpp
Normal file
59
Userland/Libraries/LibWeb/Streams/UnderlyingSource.cpp
Normal file
|
@ -0,0 +1,59 @@
|
|||
/*
|
||||
* Copyright (c) 2023, Matthew Olsson <mattco@serenityos.org>
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#include <LibJS/Runtime/VM.h>
|
||||
#include <LibWeb/HTML/Scripting/Environments.h>
|
||||
#include <LibWeb/Streams/UnderlyingSource.h>
|
||||
#include <LibWeb/WebIDL/CallbackType.h>
|
||||
|
||||
namespace Web::Streams {
|
||||
|
||||
// Non-standard function to aid in converting a user-provided function into a WebIDL::Callback. This is essentially
|
||||
// what the Bindings generator would do at compile time, but at runtime instead.
|
||||
static JS::ThrowCompletionOr<JS::Handle<WebIDL::CallbackType>> property_to_callback(JS::VM& vm, JS::Value value, JS::PropertyKey const& property_key)
|
||||
{
|
||||
auto property = TRY(value.get(vm, property_key));
|
||||
|
||||
if (property.is_undefined())
|
||||
return JS::Handle<WebIDL::CallbackType> {};
|
||||
|
||||
if (!property.is_function())
|
||||
return vm.throw_completion<JS::TypeError>(JS::ErrorType::NotAFunction, TRY_OR_THROW_OOM(vm, property.to_string_without_side_effects()));
|
||||
|
||||
return vm.heap().allocate_without_realm<WebIDL::CallbackType>(property.as_object(), HTML::incumbent_settings_object());
|
||||
}
|
||||
|
||||
JS::ThrowCompletionOr<UnderlyingSource> UnderlyingSource::from_value(JS::VM& vm, JS::Value value)
|
||||
{
|
||||
if (!value.is_object())
|
||||
return UnderlyingSource {};
|
||||
|
||||
auto& object = value.as_object();
|
||||
|
||||
UnderlyingSource underlying_source {
|
||||
.start = TRY(property_to_callback(vm, value, "start")),
|
||||
.pull = TRY(property_to_callback(vm, value, "pull")),
|
||||
.cancel = TRY(property_to_callback(vm, value, "cancel")),
|
||||
.type = {},
|
||||
.auto_allocate_chunk_size = {},
|
||||
};
|
||||
|
||||
if (TRY(object.has_property("type"))) {
|
||||
auto type_value = TRY(TRY(object.get("type")).to_string(object.vm()));
|
||||
if (type_value == "bytes"sv) {
|
||||
underlying_source.type = ReadableStreamType::Bytes;
|
||||
} else {
|
||||
return vm.throw_completion<JS::TypeError>(DeprecatedString::formatted("Unknown stream type '{}'", type_value));
|
||||
}
|
||||
}
|
||||
|
||||
if (TRY(object.has_property("autoAllocateChunkSize")))
|
||||
underlying_source.auto_allocate_chunk_size = TRY(TRY(object.get("autoAllocateChunkSize")).to_bigint_int64(object.vm()));
|
||||
|
||||
return underlying_source;
|
||||
}
|
||||
|
||||
}
|
31
Userland/Libraries/LibWeb/Streams/UnderlyingSource.h
Normal file
31
Userland/Libraries/LibWeb/Streams/UnderlyingSource.h
Normal file
|
@ -0,0 +1,31 @@
|
|||
/*
|
||||
* Copyright (c) 2023, Matthew Olsson <mattco@serenityos.org>
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <AK/Forward.h>
|
||||
#include <LibJS/Forward.h>
|
||||
#include <LibWeb/Bindings/PlatformObject.h>
|
||||
#include <LibWeb/Forward.h>
|
||||
#include <LibWeb/WebIDL/Promise.h>
|
||||
|
||||
namespace Web::Streams {
|
||||
|
||||
enum class ReadableStreamType {
|
||||
Bytes
|
||||
};
|
||||
|
||||
struct UnderlyingSource {
|
||||
JS::Handle<WebIDL::CallbackType> start;
|
||||
JS::Handle<WebIDL::CallbackType> pull;
|
||||
JS::Handle<WebIDL::CallbackType> cancel;
|
||||
Optional<ReadableStreamType> type;
|
||||
Optional<i64> auto_allocate_chunk_size;
|
||||
|
||||
static JS::ThrowCompletionOr<UnderlyingSource> from_value(JS::VM&, JS::Value);
|
||||
};
|
||||
|
||||
}
|
Loading…
Add table
Add a link
Reference in a new issue