1/*
2 * Copyright (C) 2017 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY CANON INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL CANON INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#include "JSDOMBinding.h"
29#include "JSDOMConvert.h"
30#include "JSDOMGuardedObject.h"
31#include "JSReadableStream.h"
32
33namespace WebCore {
34
35class ReadableStreamSink;
36class ReadableStreamSource;
37
38class ReadableStream final : public DOMGuarded<JSReadableStream> {
39public:
40 static Ref<ReadableStream> create(JSDOMGlobalObject& globalObject, JSReadableStream& readableStream) { return adoptRef(*new ReadableStream(globalObject, readableStream)); }
41
42 static Ref<ReadableStream> create(JSC::ExecState&, RefPtr<ReadableStreamSource>&&);
43
44 WEBCORE_EXPORT static bool isDisturbed(JSC::ExecState&, JSC::JSValue);
45
46 std::pair<Ref<ReadableStream>, Ref<ReadableStream>> tee();
47
48 void lock();
49 void pipeTo(ReadableStreamSink&);
50 bool isLocked() const;
51 bool isDisturbed() const;
52
53 JSReadableStream* readableStream() const { return guarded(); }
54
55protected:
56 ReadableStream(JSDOMGlobalObject& globalObject, JSReadableStream& readableStream) : DOMGuarded<JSReadableStream>(globalObject, readableStream) { }
57};
58
59struct JSReadableStreamWrapperConverter {
60 static RefPtr<ReadableStream> toWrapped(JSC::ExecState& state, JSC::JSValue value)
61 {
62 JSC::VM& vm = state.vm();
63 auto* globalObject = JSC::jsDynamicCast<JSDOMGlobalObject*>(vm, state.lexicalGlobalObject());
64 if (!globalObject)
65 return nullptr;
66
67 auto* readableStream = JSC::jsDynamicCast<JSReadableStream*>(vm, value);
68 if (!readableStream)
69 return nullptr;
70
71 return ReadableStream::create(*globalObject, *readableStream);
72 }
73};
74
75template<> struct JSDOMWrapperConverterTraits<ReadableStream> {
76 using WrapperClass = JSReadableStreamWrapperConverter;
77 using ToWrappedReturnType = RefPtr<ReadableStream>;
78 static constexpr bool needsState = true;
79};
80
81inline JSC::JSValue toJS(JSC::ExecState*, JSC::JSGlobalObject*, ReadableStream* stream)
82{
83 return stream ? stream->readableStream() : JSC::jsUndefined();
84}
85
86}
87