1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
|
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/dom/UnderlyingSinkCallbackHelpers.h"
using namespace mozilla::dom;
NS_IMPL_CYCLE_COLLECTION(UnderlyingSinkAlgorithmsBase)
NS_IMPL_CYCLE_COLLECTING_ADDREF(UnderlyingSinkAlgorithmsBase)
NS_IMPL_CYCLE_COLLECTING_RELEASE(UnderlyingSinkAlgorithmsBase)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(UnderlyingSinkAlgorithmsBase)
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTION_INHERITED_WITH_JS_MEMBERS(
UnderlyingSinkAlgorithms, UnderlyingSinkAlgorithmsBase,
(mGlobal, mStartCallback, mWriteCallback, mCloseCallback, mAbortCallback),
(mUnderlyingSink))
NS_IMPL_ADDREF_INHERITED(UnderlyingSinkAlgorithms, UnderlyingSinkAlgorithmsBase)
NS_IMPL_RELEASE_INHERITED(UnderlyingSinkAlgorithms,
UnderlyingSinkAlgorithmsBase)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(UnderlyingSinkAlgorithms)
NS_INTERFACE_MAP_END_INHERITING(UnderlyingSinkAlgorithmsBase)
// https://streams.spec.whatwg.org/#set-up-writable-stream-default-controller-from-underlying-sink
void UnderlyingSinkAlgorithms::StartCallback(
JSContext* aCx, WritableStreamDefaultController& aController,
JS::MutableHandle<JS::Value> aRetVal, ErrorResult& aRv) {
if (!mStartCallback) {
// Step 2: Let startAlgorithm be an algorithm that returns undefined.
aRetVal.setUndefined();
return;
}
// Step 6: If underlyingSinkDict["start"] exists, then set startAlgorithm to
// an algorithm which returns the result of invoking
// underlyingSinkDict["start"] with argument list « controller » and callback
// this value underlyingSink.
JS::Rooted<JSObject*> thisObj(aCx, mUnderlyingSink);
return mStartCallback->Call(thisObj, aController, aRetVal, aRv,
"UnderlyingSink.start",
CallbackFunction::eRethrowExceptions);
}
// https://streams.spec.whatwg.org/#set-up-writable-stream-default-controller-from-underlying-sink
already_AddRefed<Promise> UnderlyingSinkAlgorithms::WriteCallback(
JSContext* aCx, JS::Handle<JS::Value> aChunk,
WritableStreamDefaultController& aController, ErrorResult& aRv) {
if (!mWriteCallback) {
// Step 3: Let writeAlgorithm be an algorithm that returns a promise
// resolved with undefined.
return Promise::CreateResolvedWithUndefined(mGlobal, aRv);
}
// Step 7: If underlyingSinkDict["write"] exists, then set writeAlgorithm to
// an algorithm which takes an argument chunk and returns the result of
// invoking underlyingSinkDict["write"] with argument list « chunk, controller
// » and callback this value underlyingSink.
JS::Rooted<JSObject*> thisObj(aCx, mUnderlyingSink);
RefPtr<Promise> promise = mWriteCallback->Call(
thisObj, aChunk, aController, aRv, "UnderlyingSink.write",
CallbackFunction::eRethrowExceptions);
return promise.forget();
}
// https://streams.spec.whatwg.org/#set-up-writable-stream-default-controller-from-underlying-sink
already_AddRefed<Promise> UnderlyingSinkAlgorithms::CloseCallback(
JSContext* aCx, ErrorResult& aRv) {
if (!mCloseCallback) {
// Step 4: Let closeAlgorithm be an algorithm that returns a promise
// resolved with undefined.
return Promise::CreateResolvedWithUndefined(mGlobal, aRv);
}
// Step 8: If underlyingSinkDict["close"] exists, then set closeAlgorithm to
// an algorithm which returns the result of invoking
// underlyingSinkDict["close"] with argument list «» and callback this value
// underlyingSink.
JS::Rooted<JSObject*> thisObj(aCx, mUnderlyingSink);
RefPtr<Promise> promise =
mCloseCallback->Call(thisObj, aRv, "UnderlyingSink.close",
CallbackFunction::eRethrowExceptions);
return promise.forget();
}
// https://streams.spec.whatwg.org/#set-up-writable-stream-default-controller-from-underlying-sink
already_AddRefed<Promise> UnderlyingSinkAlgorithms::AbortCallback(
JSContext* aCx, const Optional<JS::Handle<JS::Value>>& aReason,
ErrorResult& aRv) {
if (!mAbortCallback) {
// Step 5: Let abortAlgorithm be an algorithm that returns a promise
// resolved with undefined.
return Promise::CreateResolvedWithUndefined(mGlobal, aRv);
}
// Step 9: Let abortAlgorithm be an algorithm that returns a promise resolved
// with undefined.
JS::Rooted<JSObject*> thisObj(aCx, mUnderlyingSink);
RefPtr<Promise> promise =
mAbortCallback->Call(thisObj, aReason, aRv, "UnderlyingSink.abort",
CallbackFunction::eRethrowExceptions);
return promise.forget();
}
|
