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
15namespace v8_inspector {
16
17namespace {
18
19void 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
34InspectedContext::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  m_context.SetWeak(&m_context, &clearContext,
45                    v8::WeakCallbackType::kParameter);
46
47  v8::Isolate* isolate = m_inspector->isolate();
48  v8::Local<v8::Object> global = info.context->Global();
49  v8::Local<v8::Object> console =
50      V8Console::createConsole(this, info.hasMemoryOnConsole);
51  if (!global
52           ->Set(info.context, toV8StringInternalized(isolate, "console"),
53                 console)
54           .FromMaybe(false))
55    return;
56  m_console.Reset(isolate, console);
57  m_console.SetWeak();
58}
59
60InspectedContext::~InspectedContext() {
61  if (!m_console.IsEmpty()) {
62    v8::HandleScope scope(isolate());
63    V8Console::clearInspectedContextIfNeeded(context(),
64                                             m_console.Get(isolate()));
65  }
66}
67
68v8::Local<v8::Context> InspectedContext::context() const {
69  return m_context.Get(isolate());
70}
71
72v8::Isolate* InspectedContext::isolate() const {
73  return m_inspector->isolate();
74}
75
76bool InspectedContext::createInjectedScript() {
77  DCHECK(!m_injectedScript);
78  std::unique_ptr<InjectedScript> injectedScript = InjectedScript::create(this);
79  // InjectedScript::create can destroy |this|.
80  if (!injectedScript) return false;
81  m_injectedScript = std::move(injectedScript);
82  return true;
83}
84
85void InspectedContext::discardInjectedScript() { m_injectedScript.reset(); }
86
87}  // namespace v8_inspector
88