1 // Copyright 2016 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "src/inspector/inspected-context.h"
6
7 #include "src/inspector/injected-script.h"
8 #include "src/inspector/string-util.h"
9 #include "src/inspector/v8-console.h"
10 #include "src/inspector/v8-inspector-impl.h"
11 #include "src/inspector/v8-value-copier.h"
12
13 #include "include/v8-inspector.h"
14
15 namespace v8_inspector {
16
17 namespace {
18
clearContext(const v8::WeakCallbackInfo<v8::Global<v8::Context>> & data)19 void clearContext(const v8::WeakCallbackInfo<v8::Global<v8::Context>>& data) {
20 // Inspected context is created in V8InspectorImpl::contextCreated method
21 // and destroyed in V8InspectorImpl::contextDestroyed.
22 // Both methods takes valid v8::Local<v8::Context> handle to the same context,
23 // it means that context is created before InspectedContext constructor and is
24 // always destroyed after InspectedContext destructor therefore this callback
25 // should be never called.
26 // It's possible only if inspector client doesn't call contextDestroyed which
27 // is considered an error.
28 CHECK(false);
29 data.GetParameter()->Reset();
30 }
31
32 } // namespace
33
InspectedContext(V8InspectorImpl * inspector,const V8ContextInfo & info,int contextId)34 InspectedContext::InspectedContext(V8InspectorImpl* inspector,
35 const V8ContextInfo& info, int contextId)
36 : m_inspector(inspector),
37 m_context(info.context->GetIsolate(), info.context),
38 m_contextId(contextId),
39 m_contextGroupId(info.contextGroupId),
40 m_origin(toString16(info.origin)),
41 m_humanReadableName(toString16(info.humanReadableName)),
42 m_auxData(toString16(info.auxData)),
43 m_reported(false) {
44 v8::Isolate* isolate = m_inspector->isolate();
45 info.context->SetEmbedderData(static_cast<int>(v8::Context::kDebugIdIndex),
46 v8::Int32::New(isolate, contextId));
47 m_context.SetWeak(&m_context, &clearContext,
48 v8::WeakCallbackType::kParameter);
49
50 v8::Local<v8::Object> global = info.context->Global();
51 v8::Local<v8::Object> console =
52 V8Console::createConsole(this, info.hasMemoryOnConsole);
53 if (!global
54 ->Set(info.context, toV8StringInternalized(isolate, "console"),
55 console)
56 .FromMaybe(false))
57 return;
58 m_console.Reset(isolate, console);
59 m_console.SetWeak();
60 }
61
~InspectedContext()62 InspectedContext::~InspectedContext() {
63 if (!m_console.IsEmpty()) {
64 v8::HandleScope scope(isolate());
65 V8Console::clearInspectedContextIfNeeded(context(),
66 m_console.Get(isolate()));
67 }
68 }
69
70 // static
contextId(v8::Local<v8::Context> context)71 int InspectedContext::contextId(v8::Local<v8::Context> context) {
72 v8::Local<v8::Value> data =
73 context->GetEmbedderData(static_cast<int>(v8::Context::kDebugIdIndex));
74 if (data.IsEmpty() || !data->IsInt32()) return 0;
75 return static_cast<int>(data.As<v8::Int32>()->Value());
76 }
77
context() const78 v8::Local<v8::Context> InspectedContext::context() const {
79 return m_context.Get(isolate());
80 }
81
isolate() const82 v8::Isolate* InspectedContext::isolate() const {
83 return m_inspector->isolate();
84 }
85
createInjectedScript()86 bool InspectedContext::createInjectedScript() {
87 DCHECK(!m_injectedScript);
88 std::unique_ptr<InjectedScript> injectedScript = InjectedScript::create(this);
89 // InjectedScript::create can destroy |this|.
90 if (!injectedScript) return false;
91 m_injectedScript = std::move(injectedScript);
92 return true;
93 }
94
discardInjectedScript()95 void InspectedContext::discardInjectedScript() { m_injectedScript.reset(); }
96
97 } // namespace v8_inspector
98