1 /*
2 * Copyright (c) 2010, Google 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 are
6 * met:
7 *
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 * * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include "src/inspector/java-script-call-frame.h"
32
33 #include "src/debug/debug-interface.h"
34 #include "src/inspector/string-util.h"
35
36 namespace v8_inspector {
37
JavaScriptCallFrame(v8::Local<v8::Context> debuggerContext,v8::Local<v8::Object> callFrame)38 JavaScriptCallFrame::JavaScriptCallFrame(v8::Local<v8::Context> debuggerContext,
39 v8::Local<v8::Object> callFrame)
40 : m_isolate(debuggerContext->GetIsolate()),
41 m_debuggerContext(m_isolate, debuggerContext),
42 m_callFrame(m_isolate, callFrame) {}
43
~JavaScriptCallFrame()44 JavaScriptCallFrame::~JavaScriptCallFrame() {}
45
callV8FunctionReturnInt(const char * name) const46 int JavaScriptCallFrame::callV8FunctionReturnInt(const char* name) const {
47 v8::HandleScope handleScope(m_isolate);
48 v8::MicrotasksScope microtasks(m_isolate,
49 v8::MicrotasksScope::kDoNotRunMicrotasks);
50 v8::Local<v8::Context> context =
51 v8::Local<v8::Context>::New(m_isolate, m_debuggerContext);
52 v8::Local<v8::Object> callFrame =
53 v8::Local<v8::Object>::New(m_isolate, m_callFrame);
54 v8::Local<v8::Function> func = v8::Local<v8::Function>::Cast(
55 callFrame->Get(context, toV8StringInternalized(m_isolate, name))
56 .ToLocalChecked());
57 v8::Local<v8::Value> result;
58 if (!func->Call(context, callFrame, 0, nullptr).ToLocal(&result) ||
59 !result->IsInt32())
60 return 0;
61 return result.As<v8::Int32>()->Value();
62 }
63
contextId() const64 int JavaScriptCallFrame::contextId() const {
65 return callV8FunctionReturnInt("contextId");
66 }
67
isAtReturn() const68 bool JavaScriptCallFrame::isAtReturn() const {
69 v8::HandleScope handleScope(m_isolate);
70 v8::Local<v8::Context> context =
71 v8::Local<v8::Context>::New(m_isolate, m_debuggerContext);
72 v8::Local<v8::Object> callFrame =
73 v8::Local<v8::Object>::New(m_isolate, m_callFrame);
74 v8::Local<v8::Value> result;
75 if (!callFrame->Get(context, toV8StringInternalized(m_isolate, "isAtReturn"))
76 .ToLocal(&result) ||
77 !result->IsBoolean())
78 return false;
79 return result.As<v8::Boolean>()->BooleanValue(context).FromMaybe(false);
80 }
81
details() const82 v8::MaybeLocal<v8::Object> JavaScriptCallFrame::details() const {
83 v8::MicrotasksScope microtasks(m_isolate,
84 v8::MicrotasksScope::kDoNotRunMicrotasks);
85 v8::Local<v8::Context> context =
86 v8::Local<v8::Context>::New(m_isolate, m_debuggerContext);
87 v8::Local<v8::Object> callFrame =
88 v8::Local<v8::Object>::New(m_isolate, m_callFrame);
89 v8::Local<v8::Function> func = v8::Local<v8::Function>::Cast(
90 callFrame->Get(context, toV8StringInternalized(m_isolate, "details"))
91 .ToLocalChecked());
92 v8::TryCatch try_catch(m_isolate);
93 v8::Local<v8::Value> details;
94 if (func->Call(context, callFrame, 0, nullptr).ToLocal(&details)) {
95 return v8::Local<v8::Object>::Cast(details);
96 }
97 return v8::MaybeLocal<v8::Object>();
98 }
99
evaluate(v8::Local<v8::Value> expression,bool throwOnSideEffect)100 v8::MaybeLocal<v8::Value> JavaScriptCallFrame::evaluate(
101 v8::Local<v8::Value> expression, bool throwOnSideEffect) {
102 v8::MicrotasksScope microtasks(m_isolate,
103 v8::MicrotasksScope::kRunMicrotasks);
104 v8::Local<v8::Context> context =
105 v8::Local<v8::Context>::New(m_isolate, m_debuggerContext);
106 v8::Local<v8::Object> callFrame =
107 v8::Local<v8::Object>::New(m_isolate, m_callFrame);
108 v8::Local<v8::Function> evalFunction = v8::Local<v8::Function>::Cast(
109 callFrame->Get(context, toV8StringInternalized(m_isolate, "evaluate"))
110 .ToLocalChecked());
111 v8::Local<v8::Value> argv[] = {
112 expression, v8::Boolean::New(m_isolate, throwOnSideEffect)};
113 return evalFunction->Call(context, callFrame, arraysize(argv), argv);
114 }
115
restart()116 v8::MaybeLocal<v8::Value> JavaScriptCallFrame::restart() {
117 v8::MicrotasksScope microtasks(m_isolate,
118 v8::MicrotasksScope::kDoNotRunMicrotasks);
119 v8::Local<v8::Context> context =
120 v8::Local<v8::Context>::New(m_isolate, m_debuggerContext);
121 v8::Local<v8::Object> callFrame =
122 v8::Local<v8::Object>::New(m_isolate, m_callFrame);
123 v8::Local<v8::Function> restartFunction = v8::Local<v8::Function>::Cast(
124 callFrame->Get(context, toV8StringInternalized(m_isolate, "restart"))
125 .ToLocalChecked());
126 v8::TryCatch try_catch(m_isolate);
127 v8::debug::SetLiveEditEnabled(m_isolate, true);
128 v8::MaybeLocal<v8::Value> result = restartFunction->Call(
129 m_debuggerContext.Get(m_isolate), callFrame, 0, nullptr);
130 v8::debug::SetLiveEditEnabled(m_isolate, false);
131 return result;
132 }
133
setVariableValue(int scopeNumber,v8::Local<v8::Value> variableName,v8::Local<v8::Value> newValue)134 v8::MaybeLocal<v8::Value> JavaScriptCallFrame::setVariableValue(
135 int scopeNumber, v8::Local<v8::Value> variableName,
136 v8::Local<v8::Value> newValue) {
137 v8::MicrotasksScope microtasks(m_isolate,
138 v8::MicrotasksScope::kDoNotRunMicrotasks);
139 v8::Local<v8::Context> context =
140 v8::Local<v8::Context>::New(m_isolate, m_debuggerContext);
141 v8::Local<v8::Object> callFrame =
142 v8::Local<v8::Object>::New(m_isolate, m_callFrame);
143 v8::Local<v8::Function> setVariableValueFunction =
144 v8::Local<v8::Function>::Cast(
145 callFrame
146 ->Get(context,
147 toV8StringInternalized(m_isolate, "setVariableValue"))
148 .ToLocalChecked());
149 v8::Local<v8::Value> argv[] = {
150 v8::Local<v8::Value>(v8::Integer::New(m_isolate, scopeNumber)),
151 variableName, newValue};
152 v8::TryCatch try_catch(m_isolate);
153 return setVariableValueFunction->Call(context, callFrame, arraysize(argv),
154 argv);
155 }
156
157 } // namespace v8_inspector
158