1 // Copyright 2014 The Chromium 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 "extensions/renderer/logging_native_handler.h"
6
7 #include "base/logging.h"
8 #include "base/strings/stringprintf.h"
9
10 namespace extensions {
11
LoggingNativeHandler(ScriptContext * context)12 LoggingNativeHandler::LoggingNativeHandler(ScriptContext* context)
13 : ObjectBackedNativeHandler(context) {
14 RouteFunction(
15 "DCHECK",
16 base::Bind(&LoggingNativeHandler::Dcheck, base::Unretained(this)));
17 RouteFunction(
18 "CHECK",
19 base::Bind(&LoggingNativeHandler::Check, base::Unretained(this)));
20 RouteFunction(
21 "DCHECK_IS_ON",
22 base::Bind(&LoggingNativeHandler::DcheckIsOn, base::Unretained(this)));
23 RouteFunction("LOG",
24 base::Bind(&LoggingNativeHandler::Log, base::Unretained(this)));
25 RouteFunction(
26 "WARNING",
27 base::Bind(&LoggingNativeHandler::Warning, base::Unretained(this)));
28 }
29
~LoggingNativeHandler()30 LoggingNativeHandler::~LoggingNativeHandler() {}
31
Check(const v8::FunctionCallbackInfo<v8::Value> & args)32 void LoggingNativeHandler::Check(
33 const v8::FunctionCallbackInfo<v8::Value>& args) {
34 bool check_value;
35 std::string error_message;
36 ParseArgs(args, &check_value, &error_message);
37 CHECK(check_value) << error_message;
38 }
39
Dcheck(const v8::FunctionCallbackInfo<v8::Value> & args)40 void LoggingNativeHandler::Dcheck(
41 const v8::FunctionCallbackInfo<v8::Value>& args) {
42 bool check_value;
43 std::string error_message;
44 ParseArgs(args, &check_value, &error_message);
45 DCHECK(check_value) << error_message;
46 }
47
DcheckIsOn(const v8::FunctionCallbackInfo<v8::Value> & args)48 void LoggingNativeHandler::DcheckIsOn(
49 const v8::FunctionCallbackInfo<v8::Value>& args) {
50 args.GetReturnValue().Set(DCHECK_IS_ON);
51 }
52
Log(const v8::FunctionCallbackInfo<v8::Value> & args)53 void LoggingNativeHandler::Log(
54 const v8::FunctionCallbackInfo<v8::Value>& args) {
55 CHECK_EQ(1, args.Length());
56 LOG(INFO) << *v8::String::Utf8Value(args[0]);
57 }
58
Warning(const v8::FunctionCallbackInfo<v8::Value> & args)59 void LoggingNativeHandler::Warning(
60 const v8::FunctionCallbackInfo<v8::Value>& args) {
61 CHECK_EQ(1, args.Length());
62 LOG(WARNING) << *v8::String::Utf8Value(args[0]);
63 }
64
ParseArgs(const v8::FunctionCallbackInfo<v8::Value> & args,bool * check_value,std::string * error_message)65 void LoggingNativeHandler::ParseArgs(
66 const v8::FunctionCallbackInfo<v8::Value>& args,
67 bool* check_value,
68 std::string* error_message) {
69 CHECK_LE(args.Length(), 2);
70 *check_value = args[0]->BooleanValue();
71 if (args.Length() == 2) {
72 *error_message = "Error: " + std::string(*v8::String::Utf8Value(args[1]));
73 }
74
75 v8::Handle<v8::StackTrace> stack_trace =
76 v8::StackTrace::CurrentStackTrace(args.GetIsolate(), 10);
77 if (stack_trace.IsEmpty() || stack_trace->GetFrameCount() <= 0) {
78 *error_message += "\n <no stack trace>";
79 } else {
80 for (size_t i = 0; i < (size_t)stack_trace->GetFrameCount(); ++i) {
81 v8::Handle<v8::StackFrame> frame = stack_trace->GetFrame(i);
82 CHECK(!frame.IsEmpty());
83 *error_message += base::StringPrintf(
84 "\n at %s (%s:%d:%d)",
85 ToStringOrDefault(frame->GetFunctionName(), "<anonymous>").c_str(),
86 ToStringOrDefault(frame->GetScriptName(), "<anonymous>").c_str(),
87 frame->GetLineNumber(),
88 frame->GetColumn());
89 }
90 }
91 }
92
ToStringOrDefault(const v8::Handle<v8::String> & v8_string,const std::string & dflt)93 std::string LoggingNativeHandler::ToStringOrDefault(
94 const v8::Handle<v8::String>& v8_string,
95 const std::string& dflt) {
96 if (v8_string.IsEmpty())
97 return dflt;
98 std::string ascii_value = *v8::String::Utf8Value(v8_string);
99 return ascii_value.empty() ? dflt : ascii_value;
100 }
101
102 } // namespace extensions
103