1 // Copyright (c) 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 "base/debug/trace_event_argument.h"
6
7 #include "base/json/json_writer.h"
8 #include "base/values.h"
9
10 namespace base {
11 namespace debug {
12
TracedValue()13 TracedValue::TracedValue() : root_(new DictionaryValue()) {
14 stack_.push_back(root_.get());
15 }
16
~TracedValue()17 TracedValue::~TracedValue() {
18 DCHECK_EQ(1u, stack_.size());
19 }
20
SetInteger(const char * name,int value)21 void TracedValue::SetInteger(const char* name, int value) {
22 GetCurrentDictionary()->SetInteger(name, value);
23 }
24
SetDouble(const char * name,double value)25 void TracedValue::SetDouble(const char* name, double value) {
26 GetCurrentDictionary()->SetDouble(name, value);
27 }
28
SetBoolean(const char * name,bool value)29 void TracedValue::SetBoolean(const char* name, bool value) {
30 GetCurrentDictionary()->SetBoolean(name, value);
31 }
32
SetString(const char * name,const std::string & value)33 void TracedValue::SetString(const char* name, const std::string& value) {
34 GetCurrentDictionary()->SetString(name, value);
35 }
36
SetValue(const char * name,Value * value)37 void TracedValue::SetValue(const char* name, Value* value) {
38 GetCurrentDictionary()->Set(name, value);
39 }
40
BeginDictionary(const char * name)41 void TracedValue::BeginDictionary(const char* name) {
42 DictionaryValue* dictionary = new DictionaryValue();
43 GetCurrentDictionary()->Set(name, dictionary);
44 stack_.push_back(dictionary);
45 }
46
BeginArray(const char * name)47 void TracedValue::BeginArray(const char* name) {
48 ListValue* array = new ListValue();
49 GetCurrentDictionary()->Set(name, array);
50 stack_.push_back(array);
51 }
52
EndDictionary()53 void TracedValue::EndDictionary() {
54 DCHECK_GT(stack_.size(), 1u);
55 DCHECK(GetCurrentDictionary());
56 stack_.pop_back();
57 }
58
AppendInteger(int value)59 void TracedValue::AppendInteger(int value) {
60 GetCurrentArray()->AppendInteger(value);
61 }
62
AppendDouble(double value)63 void TracedValue::AppendDouble(double value) {
64 GetCurrentArray()->AppendDouble(value);
65 }
66
AppendBoolean(bool value)67 void TracedValue::AppendBoolean(bool value) {
68 GetCurrentArray()->AppendBoolean(value);
69 }
70
AppendString(const std::string & value)71 void TracedValue::AppendString(const std::string& value) {
72 GetCurrentArray()->AppendString(value);
73 }
74
BeginArray()75 void TracedValue::BeginArray() {
76 ListValue* array = new ListValue();
77 GetCurrentArray()->Append(array);
78 stack_.push_back(array);
79 }
80
BeginDictionary()81 void TracedValue::BeginDictionary() {
82 DictionaryValue* dictionary = new DictionaryValue();
83 GetCurrentArray()->Append(dictionary);
84 stack_.push_back(dictionary);
85 }
86
EndArray()87 void TracedValue::EndArray() {
88 DCHECK_GT(stack_.size(), 1u);
89 DCHECK(GetCurrentArray());
90 stack_.pop_back();
91 }
92
GetCurrentDictionary()93 DictionaryValue* TracedValue::GetCurrentDictionary() {
94 DCHECK(!stack_.empty());
95 DictionaryValue* dictionary = NULL;
96 stack_.back()->GetAsDictionary(&dictionary);
97 DCHECK(dictionary);
98 return dictionary;
99 }
100
GetCurrentArray()101 ListValue* TracedValue::GetCurrentArray() {
102 DCHECK(!stack_.empty());
103 ListValue* list = NULL;
104 stack_.back()->GetAsList(&list);
105 DCHECK(list);
106 return list;
107 }
108
AppendAsTraceFormat(std::string * out) const109 void TracedValue::AppendAsTraceFormat(std::string* out) const {
110 std::string tmp;
111 JSONWriter::Write(stack_.front(), &tmp);
112 *out += tmp;
113 DCHECK_EQ(1u, stack_.size()) << tmp;
114 }
115
116 } // namespace debug
117 } // namespace base
118