forked from nodejs/node
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathtraced_value.cc
More file actions
261 lines (222 loc) · 6.66 KB
/
traced_value.cc
File metadata and controls
261 lines (222 loc) · 6.66 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
// 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 <sstream>
#include "node_metadata.h"
#include "util.h"
#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_ ? ']' : '}';
}
std::unique_ptr<v8::ConvertableToTraceFormat> EnvironmentArgs::Cast() const {
auto traced_value = tracing::TracedValue::Create();
traced_value->BeginArray("args");
for (const std::string& arg : args_) traced_value->AppendString(arg);
traced_value->EndArray();
traced_value->BeginArray("exec_args");
for (const std::string& arg : exec_args_) traced_value->AppendString(arg);
traced_value->EndArray();
return traced_value;
}
std::unique_ptr<v8::ConvertableToTraceFormat> AsyncWrapArgs::Cast() const {
auto data = tracing::TracedValue::Create();
data->SetInteger("executionAsyncId", execution_async_id_);
data->SetInteger("triggerAsyncId", trigger_async_id_);
return data;
}
std::unique_ptr<v8::ConvertableToTraceFormat> ProcessMeta::Cast() const {
auto trace_process = tracing::TracedValue::Create();
trace_process->BeginDictionary("versions");
for (const auto& version : per_process::metadata.versions.pairs()) {
trace_process->SetString(version.first.data(), version.second.data());
}
trace_process->EndDictionary();
trace_process->SetString("arch", per_process::metadata.arch.c_str());
trace_process->SetString("platform", per_process::metadata.platform.c_str());
trace_process->BeginDictionary("release");
trace_process->SetString("name", per_process::metadata.release.name.c_str());
#if NODE_VERSION_IS_LTS
trace_process->SetString("lts", per_process::metadata.release.lts.c_str());
#endif
trace_process->EndDictionary();
return trace_process;
}
} // namespace tracing
} // namespace node