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
sourceID() const64 int JavaScriptCallFrame::sourceID() const {
65 return callV8FunctionReturnInt("sourceID");
66 }
67
line() const68 int JavaScriptCallFrame::line() const {
69 return callV8FunctionReturnInt("line");
70 }
71
column() const72 int JavaScriptCallFrame::column() const {
73 return callV8FunctionReturnInt("column");
74 }
75
contextId() const76 int JavaScriptCallFrame::contextId() const {
77 return callV8FunctionReturnInt("contextId");
78 }
79
isAtReturn() const80 bool JavaScriptCallFrame::isAtReturn() const {
81 v8::HandleScope handleScope(m_isolate);
82 v8::Local<v8::Context> context =
83 v8::Local<v8::Context>::New(m_isolate, m_debuggerContext);
84 v8::Local<v8::Object> callFrame =
85 v8::Local<v8::Object>::New(m_isolate, m_callFrame);
86 v8::Local<v8::Value> result;
87 if (!callFrame->Get(context, toV8StringInternalized(m_isolate, "isAtReturn"))
88 .ToLocal(&result) ||
89 !result->IsBoolean())
90 return false;
91 return result.As<v8::Boolean>()->BooleanValue(context).FromMaybe(false);
92 }
93
details() const94 v8::Local<v8::Object> JavaScriptCallFrame::details() const {
95 v8::MicrotasksScope microtasks(m_isolate,
96 v8::MicrotasksScope::kDoNotRunMicrotasks);
97 v8::Local<v8::Context> context =
98 v8::Local<v8::Context>::New(m_isolate, m_debuggerContext);
99 v8::Local<v8::Object> callFrame =
100 v8::Local<v8::Object>::New(m_isolate, m_callFrame);
101 v8::Local<v8::Function> func = v8::Local<v8::Function>::Cast(
102 callFrame->Get(context, toV8StringInternalized(m_isolate, "details"))
103 .ToLocalChecked());
104 return v8::Local<v8::Object>::Cast(
105 func->Call(context, callFrame, 0, nullptr).ToLocalChecked());
106 }
107
evaluate(v8::Local<v8::Value> expression)108 v8::MaybeLocal<v8::Value> JavaScriptCallFrame::evaluate(
109 v8::Local<v8::Value> expression) {
110 v8::MicrotasksScope microtasks(m_isolate,
111 v8::MicrotasksScope::kRunMicrotasks);
112 v8::Local<v8::Context> context =
113 v8::Local<v8::Context>::New(m_isolate, m_debuggerContext);
114 v8::Local<v8::Object> callFrame =
115 v8::Local<v8::Object>::New(m_isolate, m_callFrame);
116 v8::Local<v8::Function> evalFunction = v8::Local<v8::Function>::Cast(
117 callFrame->Get(context, toV8StringInternalized(m_isolate, "evaluate"))
118 .ToLocalChecked());
119 return evalFunction->Call(context, callFrame, 1, &expression);
120 }
121
restart()122 v8::MaybeLocal<v8::Value> JavaScriptCallFrame::restart() {
123 v8::MicrotasksScope microtasks(m_isolate,
124 v8::MicrotasksScope::kDoNotRunMicrotasks);
125 v8::Local<v8::Context> context =
126 v8::Local<v8::Context>::New(m_isolate, m_debuggerContext);
127 v8::Local<v8::Object> callFrame =
128 v8::Local<v8::Object>::New(m_isolate, m_callFrame);
129 v8::Local<v8::Function> restartFunction = v8::Local<v8::Function>::Cast(
130 callFrame->Get(context, toV8StringInternalized(m_isolate, "restart"))
131 .ToLocalChecked());
132 v8::DebugInterface::SetLiveEditEnabled(m_isolate, true);
133 v8::MaybeLocal<v8::Value> result = restartFunction->Call(
134 m_debuggerContext.Get(m_isolate), callFrame, 0, nullptr);
135 v8::DebugInterface::SetLiveEditEnabled(m_isolate, false);
136 return result;
137 }
138
setVariableValue(int scopeNumber,v8::Local<v8::Value> variableName,v8::Local<v8::Value> newValue)139 v8::MaybeLocal<v8::Value> JavaScriptCallFrame::setVariableValue(
140 int scopeNumber, v8::Local<v8::Value> variableName,
141 v8::Local<v8::Value> newValue) {
142 v8::MicrotasksScope microtasks(m_isolate,
143 v8::MicrotasksScope::kDoNotRunMicrotasks);
144 v8::Local<v8::Context> context =
145 v8::Local<v8::Context>::New(m_isolate, m_debuggerContext);
146 v8::Local<v8::Object> callFrame =
147 v8::Local<v8::Object>::New(m_isolate, m_callFrame);
148 v8::Local<v8::Function> setVariableValueFunction =
149 v8::Local<v8::Function>::Cast(
150 callFrame
151 ->Get(context,
152 toV8StringInternalized(m_isolate, "setVariableValue"))
153 .ToLocalChecked());
154 v8::Local<v8::Value> argv[] = {
155 v8::Local<v8::Value>(v8::Integer::New(m_isolate, scopeNumber)),
156 variableName, newValue};
157 return setVariableValueFunction->Call(context, callFrame, arraysize(argv),
158 argv);
159 }
160
161 } // namespace v8_inspector
162