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 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 30 LoggingNativeHandler::~LoggingNativeHandler() {} 31 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 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 48 void LoggingNativeHandler::DcheckIsOn( 49 const v8::FunctionCallbackInfo<v8::Value>& args) { 50 args.GetReturnValue().Set(DCHECK_IS_ON); 51 } 52 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 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 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 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
