GCC Code Coverage Report
Directory: ../ Exec Total Coverage
File: /home/iojs/build/workspace/node-test-commit-linux-coverage-daily/nodes/benchmark/out/../src/tracing/traced_value.cc Lines: 64 112 57.1 %
Date: 2019-08-17 22:35:23 Branches: 11 56 19.6 %

Line Branch Exec Source
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// Copyright 2016 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "tracing/traced_value.h"
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#if defined(NODE_HAVE_I18N_SUPPORT)
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#include <unicode/utf8.h>
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#include <unicode/utypes.h>
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#endif
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#include <cmath>
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#include <cstdio>
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#include <sstream>
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#include <string>
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#if defined(_STLP_VENDOR_CSTD)
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// STLPort doesn't import fpclassify into the std namespace.
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#define FPCLASSIFY_NAMESPACE
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#else
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#define FPCLASSIFY_NAMESPACE std
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#endif
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namespace node {
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namespace tracing {
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namespace {
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std::string EscapeString(const char* value) {
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  std::string result;
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  result += '"';
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  char number_buffer[10];
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#if defined(NODE_HAVE_I18N_SUPPORT)
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  int32_t len = strlen(value);
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  int32_t p = 0;
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  int32_t i = 0;
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  for (; i < len; p = i) {
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    UChar32 c;
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    U8_NEXT_OR_FFFD(value, i, len, c);
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    switch (c) {
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      case '\b': result += "\\b"; break;
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      case '\f': result += "\\f"; break;
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      case '\n': result += "\\n"; break;
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      case '\r': result += "\\r"; break;
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      case '\t': result += "\\t"; break;
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      case '\\': result += "\\\\"; break;
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      case '"': result += "\\\""; break;
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      default:
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        if (c < 32 || c > 126) {
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          snprintf(
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              number_buffer, arraysize(number_buffer), "\\u%04X",
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              static_cast<uint16_t>(static_cast<uint16_t>(c)));
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          result += number_buffer;
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        } else {
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          result.append(value + p, i - p);
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        }
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    }
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  }
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#else
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  // If we do not have ICU, use a modified version of the non-UTF8 aware
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  // code from V8's own TracedValue implementation. Note, however, This
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  // will not produce correctly serialized results for UTF8 values.
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  while (*value) {
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    char c = *value++;
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    switch (c) {
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      case '\b': result += "\\b"; break;
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      case '\f': result += "\\f"; break;
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      case '\n': result += "\\n"; break;
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      case '\r': result += "\\r"; break;
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      case '\t': result += "\\t"; break;
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      case '\\': result += "\\\\"; break;
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      case '"': result += "\\\""; break;
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      default:
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        if (c < '\x20') {
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          snprintf(
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              number_buffer, arraysize(number_buffer), "\\u%04X",
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              static_cast<unsigned>(static_cast<unsigned char>(c)));
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          result += number_buffer;
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        } else {
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          result += c;
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        }
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    }
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  }
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#endif  // defined(NODE_HAVE_I18N_SUPPORT)
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  result += '"';
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  return result;
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}
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std::string DoubleToCString(double v) {
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  switch (FPCLASSIFY_NAMESPACE::fpclassify(v)) {
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    case FP_NAN: return "\"NaN\"";
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    case FP_INFINITE: return (v < 0.0 ? "\"-Infinity\"" : "\"Infinity\"");
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    case FP_ZERO: return "0";
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    default:
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      // This is a far less sophisticated version than the one used inside v8.
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      std::ostringstream stream;
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      stream.imbue(std::locale("C"));  // Ignore locale
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      stream << v;
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      return stream.str();
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  }
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}
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}  // namespace
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std::unique_ptr<TracedValue> TracedValue::Create() {
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  return std::unique_ptr<TracedValue>(new TracedValue(false));
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}
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std::unique_ptr<TracedValue> TracedValue::CreateArray() {
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  return std::unique_ptr<TracedValue>(new TracedValue(true));
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}
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TracedValue::TracedValue(bool root_is_array) :
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    first_item_(true), root_is_array_(root_is_array) {}
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void TracedValue::SetInteger(const char* name, int value) {
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  WriteName(name);
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  data_ += std::to_string(value);
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}
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void TracedValue::SetDouble(const char* name, double value) {
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  WriteName(name);
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  data_ += DoubleToCString(value);
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}
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void TracedValue::SetBoolean(const char* name, bool value) {
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  WriteName(name);
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  data_ += value ? "true" : "false";
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}
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void TracedValue::SetNull(const char* name) {
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  WriteName(name);
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  data_ += "null";
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}
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void TracedValue::SetString(const char* name, const char* value) {
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  WriteName(name);
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  data_ += EscapeString(value);
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}
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void TracedValue::BeginDictionary(const char* name) {
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  WriteName(name);
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  data_ += '{';
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  first_item_ = true;
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}
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void TracedValue::BeginArray(const char* name) {
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  WriteName(name);
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  data_ += '[';
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  first_item_ = true;
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}
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void TracedValue::AppendInteger(int value) {
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  WriteComma();
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  data_ += std::to_string(value);
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}
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void TracedValue::AppendDouble(double value) {
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  WriteComma();
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  data_ += DoubleToCString(value);
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}
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void TracedValue::AppendBoolean(bool value) {
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  WriteComma();
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  data_ += value ? "true" : "false";
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}
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void TracedValue::AppendNull() {
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  WriteComma();
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  data_ += "null";
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}
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void TracedValue::AppendString(const char* value) {
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  WriteComma();
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  data_ += EscapeString(value);
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}
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void TracedValue::BeginDictionary() {
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  WriteComma();
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  data_ += '{';
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  first_item_ = true;
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}
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void TracedValue::BeginArray() {
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  WriteComma();
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  data_ += '[';
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  first_item_ = true;
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}
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void TracedValue::EndDictionary() {
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  data_ += '}';
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  first_item_ = false;
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}
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void TracedValue::EndArray() {
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  data_ += ']';
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  first_item_ = false;
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}
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void TracedValue::WriteComma() {
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  if (first_item_) {
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    first_item_ = false;
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  } else {
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    data_ += ',';
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  }
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}
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void TracedValue::WriteName(const char* name) {
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  WriteComma();
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  data_ += '"';
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  data_ += name;
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  data_ += "\":";
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}
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void TracedValue::AppendAsTraceFormat(std::string* out) const {
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  *out += root_is_array_ ? '[' : '{';
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  *out += data_;
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  *out += root_is_array_ ? ']' : '}';
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}
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}  // namespace tracing
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}  // namespace node