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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	tracing/traced_value.cc	Lines:	117	122	95.9 %
Date:	2022-06-12 04:16:28	Branches:	38	56	67.9 %


// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "tracing/traced_value.h"

#if defined(NODE_HAVE_I18N_SUPPORT)
#include <unicode/utf8.h>
#include <unicode/utypes.h>
#endif

#include <cmath>
#include <cstdio>
#include <sstream>
#include <string>

#if defined(_STLP_VENDOR_CSTD)
// STLPort doesn't import fpclassify into the std namespace.
#define FPCLASSIFY_NAMESPACE
#else
#define FPCLASSIFY_NAMESPACE std
#endif

namespace node {
namespace tracing {

namespace {

std::string EscapeString(const char* value) {
  std::string result;
  result += '"';
  char number_buffer[10];
#if defined(NODE_HAVE_I18N_SUPPORT)
  int32_t len = strlen(value);
  int32_t p = 0;
  int32_t i = 0;
  for (; i < len; p = i) {
    UChar32 c;
    U8_NEXT_OR_FFFD(value, i, len, c);
    switch (c) {
      case '\b': result += "\\b"; break;
      case '\f': result += "\\f"; break;
      case '\n': result += "\\n"; break;
      case '\r': result += "\\r"; break;
      case '\t': result += "\\t"; break;
      case '\\': result += "\\\\"; break;
      case '"': result += "\\\""; break;
      default:
        if (c < 32 || c > 126) {
          snprintf(
              number_buffer, arraysize(number_buffer), "\\u%04X",
              static_cast<uint16_t>(static_cast<uint16_t>(c)));
          result += number_buffer;
        } else {
          result.append(value + p, i - p);
        }
    }
  }
#else
  // If we do not have ICU, use a modified version of the non-UTF8 aware
  // code from V8's own TracedValue implementation. Note, however, This
  // will not produce correctly serialized results for UTF8 values.
  while (*value) {
    char c = *value++;
    switch (c) {
      case '\b': result += "\\b"; break;
      case '\f': result += "\\f"; break;
      case '\n': result += "\\n"; break;
      case '\r': result += "\\r"; break;
      case '\t': result += "\\t"; break;
      case '\\': result += "\\\\"; break;
      case '"': result += "\\\""; break;
      default:
        if (c < '\x20') {
          snprintf(
              number_buffer, arraysize(number_buffer), "\\u%04X",
              static_cast<unsigned>(static_cast<unsigned char>(c)));
          result += number_buffer;
        } else {
          result += c;
        }
    }
  }
#endif  // defined(NODE_HAVE_I18N_SUPPORT)
  result += '"';
  return result;
}

std::string DoubleToCString(double v) {
  switch (FPCLASSIFY_NAMESPACE::fpclassify(v)) {
    case FP_NAN: return "\"NaN\"";
    case FP_INFINITE: return (v < 0.0 ? "\"-Infinity\"" : "\"Infinity\"");
    case FP_ZERO: return "0";
    default:
      // This is a far less sophisticated version than the one used inside v8.
      std::ostringstream stream;
      stream.imbue(std::locale::classic());  // Ignore current locale
      stream << v;
      return stream.str();
  }
}

}  // namespace

std::unique_ptr<TracedValue> TracedValue::Create() {
  return std::unique_ptr<TracedValue>(new TracedValue(false));
}

std::unique_ptr<TracedValue> TracedValue::CreateArray() {
  return std::unique_ptr<TracedValue>(new TracedValue(true));
}

TracedValue::TracedValue(bool root_is_array) :
    first_item_(true), root_is_array_(root_is_array) {}

void TracedValue::SetInteger(const char* name, int value) {
  WriteName(name);
  data_ += std::to_string(value);
}

void TracedValue::SetDouble(const char* name, double value) {
  WriteName(name);
  data_ += DoubleToCString(value);
}

void TracedValue::SetBoolean(const char* name, bool value) {
  WriteName(name);
  data_ += value ? "true" : "false";
}

void TracedValue::SetNull(const char* name) {
  WriteName(name);
  data_ += "null";
}

void TracedValue::SetString(const char* name, const char* value) {
  WriteName(name);
  data_ += EscapeString(value);
}

void TracedValue::BeginDictionary(const char* name) {
  WriteName(name);
  data_ += '{';
  first_item_ = true;
}

void TracedValue::BeginArray(const char* name) {
  WriteName(name);
  data_ += '[';
  first_item_ = true;
}

void TracedValue::AppendInteger(int value) {
  WriteComma();
  data_ += std::to_string(value);
}

void TracedValue::AppendDouble(double value) {
  WriteComma();
  data_ += DoubleToCString(value);
}

void TracedValue::AppendBoolean(bool value) {
  WriteComma();
  data_ += value ? "true" : "false";
}

void TracedValue::AppendNull() {
  WriteComma();
  data_ += "null";
}

void TracedValue::AppendString(const char* value) {
  WriteComma();
  data_ += EscapeString(value);
}

void TracedValue::BeginDictionary() {
  WriteComma();
  data_ += '{';
  first_item_ = true;
}

void TracedValue::BeginArray() {
  WriteComma();
  data_ += '[';
  first_item_ = true;
}

void TracedValue::EndDictionary() {
  data_ += '}';
  first_item_ = false;
}

void TracedValue::EndArray() {
  data_ += ']';
  first_item_ = false;
}

void TracedValue::WriteComma() {
  if (first_item_) {
    first_item_ = false;
  } else {
    data_ += ',';
  }
}

void TracedValue::WriteName(const char* name) {
  WriteComma();
  data_ += '"';
  data_ += name;
  data_ += "\":";
}

void TracedValue::AppendAsTraceFormat(std::string* out) const {
  *out += root_is_array_ ? '[' : '{';
  *out += data_;
  *out += root_is_array_ ? ']' : '}';
}

}  // namespace tracing
}  // namespace node


Generated by: GCOVR (Version 4.2)

Line	Branch	Exec	Source
1			// Copyright 2016 the V8 project 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 "tracing/traced_value.h"
6
7			#if defined(NODE_HAVE_I18N_SUPPORT)
8			#include <unicode/utf8.h>
9			#include <unicode/utypes.h>
10			#endif
11
12			#include <cmath>
13			#include <cstdio>
14			#include <sstream>
15			#include <string>
16
17			#if defined(_STLP_VENDOR_CSTD)
18			// STLPort doesn't import fpclassify into the std namespace.
19			#define FPCLASSIFY_NAMESPACE
20			#else
21			#define FPCLASSIFY_NAMESPACE std
22			#endif
23
24			namespace node {
25			namespace tracing {
26
27			namespace {
28
29		1160	std::string EscapeString(const char* value) {
30		1160	std::string result;
31		1160	result += '"';
32			char number_buffer[10];
33			#if defined(NODE_HAVE_I18N_SUPPORT)
34		1160	int32_t len = strlen(value);
35		1160	int32_t p = 0;
36		1160	int32_t i = 0;
37	✓✓	9574	for (; i < len; p = i) {
38			UChar32 c;
39	✓✓✓✗ ✓✗✓✗ ✓✗✗✗ ✗✗✗✗ ✗✗✓✗ ✗✗✓✗ ✗✓	8414	U8_NEXT_OR_FFFD(value, i, len, c);
40	✓✓✓✓ ✓✓✓✓	8414	switch (c) {
41		2	case '\b': result += "\\b"; break;
42		2	case '\f': result += "\\f"; break;
43		2	case '\n': result += "\\n"; break;
44		2	case '\r': result += "\\r"; break;
45		2	case '\t': result += "\\t"; break;
46		2	case '\\': result += "\\\\"; break;
47		10	case '"': result += "\\\""; break;
48		8392	default:
49	✓✓✓✓	8392	if (c < 32 \|\| c > 126) {
50		4	snprintf(
51			number_buffer, arraysize(number_buffer), "\\u%04X",
52			static_cast<uint16_t>(static_cast<uint16_t>(c)));
53		4	result += number_buffer;
54			} else {
55		8388	result.append(value + p, i - p);
56			}
57			}
58			}
59			#else
60			// If we do not have ICU, use a modified version of the non-UTF8 aware
61			// code from V8's own TracedValue implementation. Note, however, This
62			// will not produce correctly serialized results for UTF8 values.
63			while (*value) {
64			char c = *value++;
65			switch (c) {
66			case '\b': result += "\\b"; break;
67			case '\f': result += "\\f"; break;
68			case '\n': result += "\\n"; break;
69			case '\r': result += "\\r"; break;
70			case '\t': result += "\\t"; break;
71			case '\\': result += "\\\\"; break;
72			case '"': result += "\\\""; break;
73			default:
74			if (c < '\x20') {
75			snprintf(
76			number_buffer, arraysize(number_buffer), "\\u%04X",
77			static_cast<unsigned>(static_cast<unsigned char>(c)));
78			result += number_buffer;
79			} else {
80			result += c;
81			}
82			}
83			}
84			#endif // defined(NODE_HAVE_I18N_SUPPORT)
85		1160	result += '"';
86		1160	return result;
87			}
88
89		10	std::string DoubleToCString(double v) {
90	✓✓✗✓	10	switch (FPCLASSIFY_NAMESPACE::fpclassify(v)) {
91		2	case FP_NAN: return "\"NaN\"";
92	✓✓	4	case FP_INFINITE: return (v < 0.0 ? "\"-Infinity\"" : "\"Infinity\"");
93			case FP_ZERO: return "0";
94		4	default:
95			// This is a far less sophisticated version than the one used inside v8.
96		8	std::ostringstream stream;
97		4	stream.imbue(std::locale::classic()); // Ignore current locale
98		4	stream << v;
99		4	return stream.str();
100			}
101			}
102
103			} // namespace
104
105		83	std::unique_ptr<TracedValue> TracedValue::Create() {
106		83	return std::unique_ptr<TracedValue>(new TracedValue(false));
107			}
108
109		2	std::unique_ptr<TracedValue> TracedValue::CreateArray() {
110		2	return std::unique_ptr<TracedValue>(new TracedValue(true));
111			}
112
113		85	TracedValue::TracedValue(bool root_is_array) :
114		85	first_item_(true), root_is_array_(root_is_array) {}
115
116		35	void TracedValue::SetInteger(const char* name, int value) {
117		35	WriteName(name);
118		35	data_ += std::to_string(value);
119		35	}
120
121		5	void TracedValue::SetDouble(const char* name, double value) {
122		5	WriteName(name);
123		5	data_ += DoubleToCString(value);
124		5	}
125
126		2	void TracedValue::SetBoolean(const char* name, bool value) {
127		2	WriteName(name);
128	✓✓	2	data_ += value ? "true" : "false";
129		2	}
130
131		1	void TracedValue::SetNull(const char* name) {
132		1	WriteName(name);
133		1	data_ += "null";
134		1	}
135
136		1123	void TracedValue::SetString(const char* name, const char* value) {
137		1123	WriteName(name);
138		1123	data_ += EscapeString(value);
139		1123	}
140
141		113	void TracedValue::BeginDictionary(const char* name) {
142		113	WriteName(name);
143		113	data_ += '{';
144		113	first_item_ = true;
145		113	}
146
147		17	void TracedValue::BeginArray(const char* name) {
148		17	WriteName(name);
149		17	data_ += '[';
150		17	first_item_ = true;
151		17	}
152
153		1	void TracedValue::AppendInteger(int value) {
154		1	WriteComma();
155		1	data_ += std::to_string(value);
156		1	}
157
158		5	void TracedValue::AppendDouble(double value) {
159		5	WriteComma();
160		5	data_ += DoubleToCString(value);
161		5	}
162
163		2	void TracedValue::AppendBoolean(bool value) {
164		2	WriteComma();
165	✓✓	2	data_ += value ? "true" : "false";
166		2	}
167
168		1	void TracedValue::AppendNull() {
169		1	WriteComma();
170		1	data_ += "null";
171		1	}
172
173		37	void TracedValue::AppendString(const char* value) {
174		37	WriteComma();
175		37	data_ += EscapeString(value);
176		37	}
177
178		1	void TracedValue::BeginDictionary() {
179		1	WriteComma();
180		1	data_ += '{';
181		1	first_item_ = true;
182		1	}
183
184			void TracedValue::BeginArray() {
185			WriteComma();
186			data_ += '[';
187			first_item_ = true;
188			}
189
190		114	void TracedValue::EndDictionary() {
191		114	data_ += '}';
192		114	first_item_ = false;
193		114	}
194
195		17	void TracedValue::EndArray() {
196		17	data_ += ']';
197		17	first_item_ = false;
198		17	}
199
200		1343	void TracedValue::WriteComma() {
201	✓✓	1343	if (first_item_) {
202		215	first_item_ = false;
203			} else {
204		1128	data_ += ',';
205			}
206		1343	}
207
208		1296	void TracedValue::WriteName(const char* name) {
209		1296	WriteComma();
210		1296	data_ += '"';
211		1296	data_ += name;
212		1296	data_ += "\":";
213		1296	}
214
215		193	void TracedValue::AppendAsTraceFormat(std::string* out) const {
216	✓✓	193	*out += root_is_array_ ? '[' : '{';
217		193	*out += data_;
218	✓✓	193	*out += root_is_array_ ? ']' : '}';
219		193	}
220
221			} // namespace tracing
222			} // namespace node