about summary refs log tree commit diff stats
path: root/cpp/tangle/001trace.cc
blob: a02cacd48c8b2361c4cb4d2df1b9b9290fe8bd96 (plain) (blame)
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
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
bool Hide_warnings = false;

struct trace_stream {
  vector<pair<string, pair<int, string> > > past_lines;  // [(layer label, frame, line)]
  map<string, int> frame;
  // accumulator for current line
  ostringstream* curr_stream;
  string curr_layer;
  string dump_layer;
  trace_stream() :curr_stream(NULL) {}
  ~trace_stream() { if (curr_stream) delete curr_stream; }

  ostringstream& stream(string layer) {
    newline();
    curr_stream = new ostringstream;
    curr_layer = layer;
    return *curr_stream;
  }

  // be sure to call this before messing with curr_stream or curr_layer or frame
  void newline() {
    if (!curr_stream) return;
    string curr_contents = curr_stream->str();
    curr_contents.erase(curr_contents.find_last_not_of("\r\n")+1);
    past_lines.push_back(pair<string, pair<int, string> >(curr_layer, pair<int, string>(frame[curr_layer], curr_contents)));
    if (curr_layer == "dump")
      cerr << with_newline(curr_stream->str());
    else if ((!dump_layer.empty() && prefix_match(dump_layer, curr_layer))
        || (!Hide_warnings && curr_layer == "warn"))
      cerr << curr_layer << "/" << frame[curr_layer] << ": " << with_newline(curr_stream->str());
    delete curr_stream;
    curr_stream = NULL;
  }

  string readable_contents(string layer) {  // missing layer = everything, frame, hierarchical layers
    newline();
    ostringstream output;
    string real_layer, frame;
    parse_layer_and_frame(layer, &real_layer, &frame);
    for (vector<pair<string, pair<int, string> > >::iterator p = past_lines.begin(); p != past_lines.end(); ++p)
      if (layer.empty() || prefix_match(real_layer, p->first))
        output << p->first << "/" << p->second.first << ": " << with_newline(p->second.second);
    return output.str();
  }

  void dump_browseable_contents(string layer) {
    ofstream dump("dump");
    dump << "<div class='frame' frame_index='1'>start</div>\n";
    for (vector<pair<string, pair<int, string> > >::iterator p = past_lines.begin(); p != past_lines.end(); ++p) {
      if (p->first != layer) continue;
      dump << "<div class='frame";
      if (p->second.first > 1) dump << " hidden";
      dump << "' frame_index='" << p->second.first << "'>";
      dump << p->second.second;
      dump << "</div>\n";
    }
    dump.close();
  }

  string with_newline(string s) {
    if (s[s.size()-1] != '\n') return s+'\n';
    return s;
  }
};



trace_stream* Trace_stream = NULL;

// Top-level helper. IMPORTANT: can't nest.
#define trace(layer)  !Trace_stream ? cerr /*print nothing*/ : Trace_stream->stream(layer)
// Warnings should go straight to cerr by default since calls to trace() have
// some unfriendly constraints (they delay printing, they can't nest)
#define raise  ((!Trace_stream || !Hide_warnings) ? cerr /*do print*/ : Trace_stream->stream("warn")) << __FILE__ << ":" << __LINE__ << " "
// Just debug logging without any test support.
#define dbg cerr << __FUNCTION__ << '(' << __FILE__ << ':' << __LINE__ << ") "

// raise << die exits after printing -- unless Hide_warnings is set.
struct die {};
ostream& operator<<(ostream& os, unused die) {
  if (Hide_warnings) return os;
  os << "dying";
  exit(1);
}

#define CLEAR_TRACE  delete Trace_stream, Trace_stream = new trace_stream;

#define DUMP(layer)  cerr << Trace_stream->readable_contents(layer)

// Trace_stream is a resource, lease_tracer uses RAII to manage it.
struct lease_tracer {
  lease_tracer() { Trace_stream = new trace_stream; }
  ~lease_tracer() { delete Trace_stream, Trace_stream = NULL; }
};

#define START_TRACING_UNTIL_END_OF_SCOPE  lease_tracer leased_tracer;

void trace_all(const string& label, const list<string>& in) {
  for (list<string>::const_iterator p = in.begin(); p != in.end(); ++p)
    trace(label) << *p;
}

bool check_trace_contents(string FUNCTION, string FILE, int LINE, string expected) {  // missing layer == anywhere, frame, hierarchical layers
  vector<string> expected_lines = split(expected, "");
  size_t curr_expected_line = 0;
  while (curr_expected_line < expected_lines.size() && expected_lines[curr_expected_line].empty())
    ++curr_expected_line;
  if (curr_expected_line == expected_lines.size()) return true;
  Trace_stream->newline();
  ostringstream output;
  string layer, frame, contents;
  parse_layer_frame_contents(expected_lines[curr_expected_line], &layer, &frame, &contents);
  for (vector<pair<string, pair<int, string> > >::iterator p = Trace_stream->past_lines.begin(); p != Trace_stream->past_lines.end(); ++p) {
    if (!layer.empty() && !prefix_match(layer, p->first))
      continue;

    if (!frame.empty() && strtol(frame.c_str(), NULL, 0) != p->second.first)
      continue;

    if (contents != p->second.second)
      continue;

    ++curr_expected_line;
    while (curr_expected_line < expected_lines.size() && expected_lines[curr_expected_line].empty())
      ++curr_expected_line;
    if (curr_expected_line == expected_lines.size()) return true;
    parse_layer_frame_contents(expected_lines[curr_expected_line], &layer, &frame, &contents);
  }

  ++Num_failures;
  cerr << "\nF " << FUNCTION << "(" << FILE << ":" << LINE << "): missing [" << contents << "] in trace:\n";
  DUMP(layer);
  Passed = false;
  return false;
}

void parse_layer_frame_contents(const string& orig, string* layer, string* frame, string* contents) {
  string layer_and_frame;
  parse_contents(orig, ": ", &layer_and_frame, contents);
  parse_layer_and_frame(layer_and_frame, layer, frame);
}

void parse_contents(const string& s, const string& delim, string* prefix, string* contents) {
  string::size_type pos = s.find(delim);
  if (pos == NOT_FOUND) {
    *prefix = "";
    *contents = s;
  }
  else {
    *prefix = s.substr(0, pos);
    *contents = s.substr(pos+delim.size());
  }
}

void parse_layer_and_frame(const string& orig, string* layer, string* frame) {
  size_t last_slash = orig.rfind('/');
  if (last_slash == NOT_FOUND
      || last_slash == orig.size()-1  // trailing slash indicates hierarchical layer
      || orig.find_last_not_of("0123456789") != last_slash) {
    *layer = orig;
    *frame = "";
  }
  else {
    *layer = orig.substr(0, last_slash);
    *frame = orig.substr(last_slash+1);
  }
}



bool check_trace_contents(string FUNCTION, string FILE, int LINE, string layer, string expected) {  // empty layer == everything, multiple layers, hierarchical layers
  vector<string> expected_lines = split(expected, "");
  size_t curr_expected_line = 0;
  while (curr_expected_line < expected_lines.size() && expected_lines[curr_expected_line].empty())
    ++curr_expected_line;
  if (curr_expected_line == expected_lines.size()) return true;
  Trace_stream->newline();
  ostringstream output;
  vector<string> layers = split(layer, ",");
  for (vector<pair<string, pair<int, string> > >::iterator p = Trace_stream->past_lines.begin(); p != Trace_stream->past_lines.end(); ++p) {
    if (!layer.empty() && !any_prefix_match(layers, p->first))
      continue;
    if (p->second.second != expected_lines[curr_expected_line])
      continue;
    ++curr_expected_line;
    while (curr_expected_line < expected_lines.size() && expected_lines[curr_expected_line].empty())
      ++curr_expected_line;
    if (curr_expected_line == expected_lines.size()) return true;
  }

  ++Num_failures;
  cerr << "\nF " << FUNCTION << "(" << FILE << ":" << LINE << "): missing [" << expected_lines[curr_expected_line] << "] in trace:\n";
  DUMP(layer);
  Passed = false;
  return false;
}

#define CHECK_TRACE_CONTENTS(...)  check_trace_contents(__FUNCTION__, __FILE__, __LINE__, __VA_ARGS__)

int trace_count(string layer) {
  return trace_count(layer, "");
}

int trace_count(string layer, string line) {
  Trace_stream->newline();
  long result = 0;
  vector<string> layers = split(layer, ",");
  for (vector<pair<string, pair<int, string> > >::iterator p = Trace_stream->past_lines.begin(); p != Trace_stream->past_lines.end(); ++p) {
    if (any_prefix_match(layers, p->first))
      if (line == "" || p->second.second == line)
        ++result;
  }
  return result;
}

int trace_count(string layer, int frame, string line) {
  Trace_stream->newline();
  long result = 0;
  vector<string> layers = split(layer, ",");
  for (vector<pair<string, pair<int, string> > >::iterator p = Trace_stream->past_lines.begin(); p != Trace_stream->past_lines.end(); ++p) {
    if (any_prefix_match(layers, p->first) && p->second.first == frame)
      if (line == "" || p->second.second == line)
        ++result;
  }
  return result;
}

#define CHECK_TRACE_WARNS()  CHECK(trace_count("warn") > 0)
#define CHECK_TRACE_DOESNT_WARN() \
  if (trace_count("warn") > 0) { \
    ++Num_failures; \
    cerr << "\nF " << __FUNCTION__ << "(" << __FILE__ << ":" << __LINE__ << "): unexpected warnings\n"; \
    DUMP("warn"); \
    Passed = false; \
    return; \
  }

bool trace_doesnt_contain(string layer, string line) {
  return trace_count(layer, line) == 0;
}

bool trace_doesnt_contain(string expected) {
  vector<string> tmp = split(expected, ": ");
  return trace_doesnt_contain(tmp[0], tmp[1]);
}

bool trace_doesnt_contain(string layer, int frame, string line) {
  return trace_count(layer, frame, line) == 0;
}

#define CHECK_TRACE_DOESNT_CONTAIN(...)  CHECK(trace_doesnt_contain(__VA_ARGS__))



// manage layer counts in Trace_stream using RAII
struct lease_trace_frame {
  string layer;
  lease_trace_frame(string l) :layer(l) {
    if (!Trace_stream) return;
    Trace_stream->newline();
    ++Trace_stream->frame[layer];
  }
  ~lease_trace_frame() {
    if (!Trace_stream) return;
    Trace_stream->newline();
    --Trace_stream->frame[layer];
  }
};
#define new_trace_frame(layer)  lease_trace_frame leased_frame(layer);

bool check_trace_contents(string FUNCTION, string FILE, int LINE, string layer, int frame, string expected) {  // multiple layers, hierarchical layers
  vector<string> expected_lines = split(expected, "");  // hack: doesn't handle newlines in embedded in lines
  size_t curr_expected_line = 0;
  while (curr_expected_line < expected_lines.size() && expected_lines[curr_expected_line].empty())
    ++curr_expected_line;
  if (curr_expected_line == expected_lines.size()) return true;
  Trace_stream->newline();
  ostringstream output;
  vector<string> layers = split(layer, ",");
  for (vector<pair<string, pair<int, string> > >::iterator p = Trace_stream->past_lines.begin(); p != Trace_stream->past_lines.end(); ++p) {
    if (!layer.empty() && !any_prefix_match(layers, p->first))
      continue;
    if (p->second.first != frame)
      continue;
    if (p->second.second != expected_lines[curr_expected_line])
      continue;
    ++curr_expected_line;
    while (curr_expected_line < expected_lines.size() && expected_lines[curr_expected_line].empty())
      ++curr_expected_line;
    if (curr_expected_line == expected_lines.size()) return true;
  }

  ++Num_failures;
  cerr << "\nF " << FUNCTION << "(" << FILE << ":" << LINE << "): missing [" << expected_lines[curr_expected_line] << "] in trace/" << frame << ":\n";
  DUMP(layer);
  Passed = false;
  return false;
}

#define CHECK_TRACE_TOP(layer, expected)  CHECK_TRACE_CONTENTS(layer, 1, expected)



vector<string> split(string s, string delim) {
  vector<string> result;
  string::size_type begin=0, end=s.find(delim);
  while (true) {
    if (end == NOT_FOUND) {
      result.push_back(string(s, begin, NOT_FOUND));
      break;
    }
    result.push_back(string(s, begin, end-begin));
    begin = end+delim.size();
    end = s.find(delim, begin);
  }
  return result;
}

bool any_prefix_match(const vector<string>& pats, const string& needle) {
  if (pats.empty()) return false;
  if (*pats[0].rbegin() != '/')
    // prefix match not requested
    return find(pats.begin(), pats.end(), needle) != pats.end();
  // first pat ends in a '/'; assume all pats do.
  for (vector<string>::const_iterator p = pats.begin(); p != pats.end(); ++p)
    if (headmatch(needle, *p)) return true;
  return false;
}

bool prefix_match(const string& pat, const string& needle) {
  if (*pat.rbegin() != '/')
    // prefix match not requested
    return pat == needle;
  return headmatch(needle, pat);
}

bool headmatch(const string& s, const string& pat) {
  if (pat.size() > s.size()) return false;
  return std::mismatch(pat.begin(), pat.end(), s.begin()).first == pat.end();
}