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
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "ModuleLoadRequest.h"
#include "mozilla/HoldDropJSObjects.h"
#include "ModuleScript.h"
#include "ScriptLoader.h"
namespace mozilla {
namespace dom {
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(ModuleLoadRequest)
NS_INTERFACE_MAP_END_INHERITING(ScriptLoadRequest)
NS_IMPL_CYCLE_COLLECTION_CLASS(ModuleLoadRequest)
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(ModuleLoadRequest,
ScriptLoadRequest)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mLoader, mModuleScript, mImports)
tmp->ClearDynamicImport();
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(ModuleLoadRequest,
ScriptLoadRequest)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mLoader, mModuleScript, mImports)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(ModuleLoadRequest,
ScriptLoadRequest)
NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mDynamicReferencingPrivate)
NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mDynamicSpecifier)
NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mDynamicPromise)
NS_IMPL_CYCLE_COLLECTION_TRACE_END
NS_IMPL_ADDREF_INHERITED(ModuleLoadRequest, ScriptLoadRequest)
NS_IMPL_RELEASE_INHERITED(ModuleLoadRequest, ScriptLoadRequest)
static VisitedURLSet* NewVisitedSetForTopLevelImport(nsIURI* aURI) {
auto set = new VisitedURLSet();
set->PutEntry(aURI);
return set;
}
/* static */ ModuleLoadRequest* ModuleLoadRequest::CreateTopLevel(
nsIURI* aURI, ScriptFetchOptions* aFetchOptions,
const SRIMetadata& aIntegrity, nsIURI* aReferrer, ScriptLoader* aLoader) {
return new ModuleLoadRequest(aURI, aFetchOptions, aIntegrity, aReferrer,
true, /* is top level */
false, /* is dynamic import */
aLoader, NewVisitedSetForTopLevelImport(aURI));
}
/* static */ ModuleLoadRequest* ModuleLoadRequest::CreateStaticImport(
nsIURI* aURI, ModuleLoadRequest* aParent) {
auto request =
new ModuleLoadRequest(aURI, aParent->mFetchOptions, SRIMetadata(),
aParent->mURI, false, /* is top level */
false, /* is dynamic import */
aParent->mLoader, aParent->mVisitedSet);
request->mIsInline = false;
request->mScriptMode = aParent->mScriptMode;
return request;
}
/* static */ ModuleLoadRequest* ModuleLoadRequest::CreateDynamicImport(
nsIURI* aURI, ScriptFetchOptions* aFetchOptions, nsIURI* aBaseURL,
ScriptLoader* aLoader, JS::Handle<JS::Value> aReferencingPrivate,
JS::Handle<JSString*> aSpecifier, JS::Handle<JSObject*> aPromise)
{
MOZ_ASSERT(aSpecifier);
MOZ_ASSERT(aPromise);
auto request = new ModuleLoadRequest(
aURI, aFetchOptions, SRIMetadata(), aBaseURL,
true, /* is top level */
true, /* is dynamic import */
aLoader, NewVisitedSetForTopLevelImport(aURI));
request->mIsInline = false;
request->mScriptMode = ScriptMode::eAsync;
request->mDynamicReferencingPrivate = aReferencingPrivate;
request->mDynamicSpecifier = aSpecifier;
request->mDynamicPromise = aPromise;
HoldJSObjects(request);
return request;
}
ModuleLoadRequest::ModuleLoadRequest(
nsIURI* aURI, ScriptFetchOptions* aFetchOptions,
const SRIMetadata& aIntegrity, nsIURI* aReferrer, bool aIsTopLevel,
bool aIsDynamicImport, ScriptLoader* aLoader, VisitedURLSet* aVisitedSet)
: ScriptLoadRequest(ScriptKind::Module, aURI, aFetchOptions, aIntegrity,
aReferrer),
mIsTopLevel(aIsTopLevel),
mIsDynamicImport(aIsDynamicImport),
mLoader(aLoader),
mVisitedSet(aVisitedSet) {}
void ModuleLoadRequest::Cancel()
{
ScriptLoadRequest::Cancel();
mModuleScript = nullptr;
mProgress = ScriptLoadRequest::Progress::Ready;
CancelImports();
mReady.RejectIfExists(NS_ERROR_DOM_ABORT_ERR, __func__);
}
void
ModuleLoadRequest::CancelImports()
{
for (size_t i = 0; i < mImports.Length(); i++) {
mImports[i]->Cancel();
}
}
void
ModuleLoadRequest::SetReady()
{
// Mark a module as ready to execute. This means that this module and all it
// dependencies have had their source loaded, parsed as a module and the
// modules instantiated.
//
// The mReady promise is used to ensure that when all dependencies of a module
// have become ready, DependenciesLoaded is called on that module
// request. This is set up in StartFetchingModuleDependencies.
#ifdef DEBUG
for (size_t i = 0; i < mImports.Length(); i++) {
MOZ_ASSERT(mImports[i]->IsReadyToRun());
}
#endif
ScriptLoadRequest::SetReady();
mReady.ResolveIfExists(true, __func__);
}
void
ModuleLoadRequest::ModuleLoaded()
{
// A module that was found to be marked as fetching in the module map has now
// been loaded.
mModuleScript = mLoader->GetFetchedModule(mURI);
if (!mModuleScript || mModuleScript->HasParseError()) {
ModuleErrored();
return;
}
mLoader->StartFetchingModuleDependencies(this);
}
void
ModuleLoadRequest::ModuleErrored()
{
mLoader->CheckModuleDependenciesLoaded(this);
MOZ_ASSERT(!mModuleScript || mModuleScript->HasParseError());
CancelImports();
SetReady();
LoadFinished();
}
void
ModuleLoadRequest::DependenciesLoaded()
{
// The module and all of its dependencies have been successfully fetched and
// compiled.
MOZ_ASSERT(mModuleScript);
mLoader->CheckModuleDependenciesLoaded(this);
SetReady();
LoadFinished();
}
void
ModuleLoadRequest::LoadFailed()
{
// We failed to load the source text or an error occurred unrelated to the
// content of the module (e.g. OOM).
if (IsCanceled()) {
return;
}
MOZ_ASSERT(!IsReadyToRun());
MOZ_ASSERT(!mModuleScript);
Cancel();
LoadFinished();
}
void
ModuleLoadRequest::LoadFinished()
{
mLoader->ProcessLoadedModuleTree(this);
mLoader = nullptr;
}
void ModuleLoadRequest::ClearDynamicImport() {
mDynamicReferencingPrivate = JS::UndefinedValue();
mDynamicSpecifier = nullptr;
mDynamicPromise = nullptr;
}
} // dom namespace
} // mozilla namespace
|
