clang 10.0.0git

TextDiagnostic.cpp
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1 //===--- TextDiagnostic.cpp - Text Diagnostic Pretty-Printing -------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #include "clang/Frontend/TextDiagnostic.h"
10 #include "clang/Basic/CharInfo.h"
11 #include "clang/Basic/DiagnosticOptions.h"
12 #include "clang/Basic/FileManager.h"
13 #include "clang/Basic/SourceManager.h"
14 #include "clang/Lex/Lexer.h"
15 #include "llvm/ADT/SmallString.h"
16 #include "llvm/ADT/StringExtras.h"
17 #include "llvm/Support/ConvertUTF.h"
18 #include "llvm/Support/ErrorHandling.h"
19 #include "llvm/Support/Locale.h"
20 #include "llvm/Support/Path.h"
21 #include "llvm/Support/raw_ostream.h"
22 #include <algorithm>
23
24 using namespace clang;
25
26 static const enum raw_ostream::Colors noteColor =
27 raw_ostream::BLACK;
28 static const enum raw_ostream::Colors remarkColor =
29 raw_ostream::BLUE;
30 static const enum raw_ostream::Colors fixitColor =
31 raw_ostream::GREEN;
32 static const enum raw_ostream::Colors caretColor =
33 raw_ostream::GREEN;
34 static const enum raw_ostream::Colors warningColor =
35 raw_ostream::MAGENTA;
36 static const enum raw_ostream::Colors templateColor =
37 raw_ostream::CYAN;
38 static const enum raw_ostream::Colors errorColor = raw_ostream::RED;
39 static const enum raw_ostream::Colors fatalColor = raw_ostream::RED;
40 // Used for changing only the bold attribute.
41 static const enum raw_ostream::Colors savedColor =
42 raw_ostream::SAVEDCOLOR;
43
44 /// Add highlights to differences in template strings.
45 static void applyTemplateHighlighting(raw_ostream &OS, StringRef Str,
46 bool &Normal, bool Bold) {
47 while (1) {
48 size_t Pos = Str.find(ToggleHighlight);
49 OS << Str.slice(0, Pos);
50 if (Pos == StringRef::npos)
51 break;
52
53 Str = Str.substr(Pos + 1);
54 if (Normal)
55 OS.changeColor(templateColor, true);
56 else {
57 OS.resetColor();
58 if (Bold)
59 OS.changeColor(savedColor, true);
60 }
61 Normal = !Normal;
62 }
63 }
64
65 /// Number of spaces to indent when word-wrapping.
66 const unsigned WordWrapIndentation = 6;
67
68 static int bytesSincePreviousTabOrLineBegin(StringRef SourceLine, size_t i) {
69 int bytes = 0;
70 while (0<i) {
71 if (SourceLine[--i]=='\t')
72 break;
73 ++bytes;
74 }
75 return bytes;
76 }
77
78 /// returns a printable representation of first item from input range
79 ///
80 /// This function returns a printable representation of the next item in a line
81 /// of source. If the next byte begins a valid and printable character, that
82 /// character is returned along with 'true'.
83 ///
84 /// Otherwise, if the next byte begins a valid, but unprintable character, a
85 /// printable, escaped representation of the character is returned, along with
86 /// 'false'. Otherwise a printable, escaped representation of the next byte
87 /// is returned along with 'false'.
88 ///
89 /// \note The index is updated to be used with a subsequent call to
90 /// printableTextForNextCharacter.
91 ///
92 /// \param SourceLine The line of source
93 /// \param i Pointer to byte index,
94 /// \param TabStop used to expand tabs
95 /// \return pair(printable text, 'true' iff original text was printable)
96 ///
97 static std::pair<SmallString<16>, bool>
98 printableTextForNextCharacter(StringRef SourceLine, size_t *i,
99 unsigned TabStop) {
100 assert(i && "i must not be null");
101 assert(*i<SourceLine.size() && "must point to a valid index");
102
103 if (SourceLine[*i]=='\t') {
104 assert(0 < TabStop && TabStop <= DiagnosticOptions::MaxTabStop &&
105 "Invalid -ftabstop value");
106 unsigned col = bytesSincePreviousTabOrLineBegin(SourceLine, *i);
107 unsigned NumSpaces = TabStop - col%TabStop;
108 assert(0 < NumSpaces && NumSpaces <= TabStop
109 && "Invalid computation of space amt");
110 ++(*i);
111
112 SmallString<16> expandedTab;
113 expandedTab.assign(NumSpaces, ' ');
114 return std::make_pair(expandedTab, true);
115 }
116
117 unsigned char const *begin, *end;
118 begin = reinterpret_cast<unsigned char const *>(&*(SourceLine.begin() + *i));
119 end = begin + (SourceLine.size() - *i);
120
121 if (llvm::isLegalUTF8Sequence(begin, end)) {
122 llvm::UTF32 c;
123 llvm::UTF32 *cptr = &c;
124 unsigned char const *original_begin = begin;
125 unsigned char const *cp_end =
126 begin + llvm::getNumBytesForUTF8(SourceLine[*i]);
127
128 llvm::ConversionResult res = llvm::ConvertUTF8toUTF32(
129 &begin, cp_end, &cptr, cptr + 1, llvm::strictConversion);
130 (void)res;
131 assert(llvm::conversionOK == res);
132 assert(0 < begin-original_begin
133 && "we must be further along in the string now");
134 *i += begin-original_begin;
135
136 if (!llvm::sys::locale::isPrint(c)) {
137 // If next character is valid UTF-8, but not printable
138 SmallString<16> expandedCP("<U+>");
139 while (c) {
140 expandedCP.insert(expandedCP.begin()+3, llvm::hexdigit(c%16));
141 c/=16;
142 }
143 while (expandedCP.size() < 8)
144 expandedCP.insert(expandedCP.begin()+3, llvm::hexdigit(0));
145 return std::make_pair(expandedCP, false);
146 }
147
148 // If next character is valid UTF-8, and printable
149 return std::make_pair(SmallString<16>(original_begin, cp_end), true);
150
151 }
152
153 // If next byte is not valid UTF-8 (and therefore not printable)
154 SmallString<16> expandedByte("<XX>");
155 unsigned char byte = SourceLine[*i];
156 expandedByte[1] = llvm::hexdigit(byte / 16);
157 expandedByte[2] = llvm::hexdigit(byte % 16);
158 ++(*i);
159 return std::make_pair(expandedByte, false);
160 }
161
162 static void expandTabs(std::string &SourceLine, unsigned TabStop) {
163 size_t i = SourceLine.size();
164 while (i>0) {
165 i--;
166 if (SourceLine[i]!='\t')
167 continue;
168 size_t tmp_i = i;
169 std::pair<SmallString<16>,bool> res
170 = printableTextForNextCharacter(SourceLine, &tmp_i, TabStop);
171 SourceLine.replace(i, 1, res.first.c_str());
172 }
173 }
174
175 /// This function takes a raw source line and produces a mapping from the bytes
176 /// of the printable representation of the line to the columns those printable
177 /// characters will appear at (numbering the first column as 0).
178 ///
179 /// If a byte 'i' corresponds to multiple columns (e.g. the byte contains a tab
180 /// character) then the array will map that byte to the first column the
181 /// tab appears at and the next value in the map will have been incremented
182 /// more than once.
183 ///
184 /// If a byte is the first in a sequence of bytes that together map to a single
185 /// entity in the output, then the array will map that byte to the appropriate
186 /// column while the subsequent bytes will be -1.
187 ///
188 /// The last element in the array does not correspond to any byte in the input
189 /// and instead is the number of columns needed to display the source
190 ///
191 /// example: (given a tabstop of 8)
192 ///
193 /// "a \t \u3042" -> {0,1,2,8,9,-1,-1,11}
194 ///
195 /// (\\u3042 is represented in UTF-8 by three bytes and takes two columns to
196 /// display)
197 static void byteToColumn(StringRef SourceLine, unsigned TabStop,
198 SmallVectorImpl<int> &out) {
199 out.clear();
200
201 if (SourceLine.empty()) {
202 out.resize(1u,0);
203 return;
204 }
205
206 out.resize(SourceLine.size()+1, -1);
207
208 int columns = 0;
209 size_t i = 0;
210 while (i<SourceLine.size()) {
211 out[i] = columns;
212 std::pair<SmallString<16>,bool> res
213 = printableTextForNextCharacter(SourceLine, &i, TabStop);
214 columns += llvm::sys::locale::columnWidth(res.first);
215 }
216 out.back() = columns;
217 }
218
219 /// This function takes a raw source line and produces a mapping from columns
220 /// to the byte of the source line that produced the character displaying at
221 /// that column. This is the inverse of the mapping produced by byteToColumn()
222 ///
223 /// The last element in the array is the number of bytes in the source string
224 ///
225 /// example: (given a tabstop of 8)
226 ///
227 /// "a \t \u3042" -> {0,1,2,-1,-1,-1,-1,-1,3,4,-1,7}
228 ///
229 /// (\\u3042 is represented in UTF-8 by three bytes and takes two columns to
230 /// display)
231 static void columnToByte(StringRef SourceLine, unsigned TabStop,
232 SmallVectorImpl<int> &out) {
233 out.clear();
234
235 if (SourceLine.empty()) {
236 out.resize(1u, 0);
237 return;
238 }
239
240 int columns = 0;
241 size_t i = 0;
242 while (i<SourceLine.size()) {
243 out.resize(columns+1, -1);
244 out.back() = i;
245 std::pair<SmallString<16>,bool> res
246 = printableTextForNextCharacter(SourceLine, &i, TabStop);
247 columns += llvm::sys::locale::columnWidth(res.first);
248 }
249 out.resize(columns+1, -1);
250 out.back() = i;
251 }
252
253 namespace {
254 struct SourceColumnMap {
255 SourceColumnMap(StringRef SourceLine, unsigned TabStop)
256 : m_SourceLine(SourceLine) {
257
258 ::byteToColumn(SourceLine, TabStop, m_byteToColumn);
259 ::columnToByte(SourceLine, TabStop, m_columnToByte);
260
261 assert(m_byteToColumn.size()==SourceLine.size()+1);
262 assert(0 < m_byteToColumn.size() && 0 < m_columnToByte.size());
263 assert(m_byteToColumn.size()
264 == static_cast<unsigned>(m_columnToByte.back()+1));
265 assert(static_cast<unsigned>(m_byteToColumn.back()+1)
266 == m_columnToByte.size());
267 }
268 int columns() const { return m_byteToColumn.back(); }
269 int bytes() const { return m_columnToByte.back(); }
270
271 /// Map a byte to the column which it is at the start of, or return -1
272 /// if it is not at the start of a column (for a UTF-8 trailing byte).
273 int byteToColumn(int n) const {
274 assert(0<=n && n<static_cast<int>(m_byteToColumn.size()));
275 return m_byteToColumn[n];
276 }
277
278 /// Map a byte to the first column which contains it.
279 int byteToContainingColumn(int N) const {
280 assert(0 <= N && N < static_cast<int>(m_byteToColumn.size()));
281 while (m_byteToColumn[N] == -1)
282 --N;
283 return m_byteToColumn[N];
284 }
285
286 /// Map a column to the byte which starts the column, or return -1 if
287 /// the column the second or subsequent column of an expanded tab or similar
288 /// multi-column entity.
289 int columnToByte(int n) const {
290 assert(0<=n && n<static_cast<int>(m_columnToByte.size()));
291 return m_columnToByte[n];
292 }
293
294 /// Map from a byte index to the next byte which starts a column.
295 int startOfNextColumn(int N) const {
296 assert(0 <= N && N < static_cast<int>(m_byteToColumn.size() - 1));
297 while (byteToColumn(++N) == -1) {}
298 return N;
299 }
300
301 /// Map from a byte index to the previous byte which starts a column.
302 int startOfPreviousColumn(int N) const {
303 assert(0 < N && N < static_cast<int>(m_byteToColumn.size()));
304 while (byteToColumn(--N) == -1) {}
305 return N;
306 }
307
308 StringRef getSourceLine() const {
309 return m_SourceLine;
310 }
311
312 private:
313 const std::string m_SourceLine;
314 SmallVector<int,200> m_byteToColumn;
315 SmallVector<int,200> m_columnToByte;
316 };
317 } // end anonymous namespace
318
319 /// When the source code line we want to print is too long for
320 /// the terminal, select the "interesting" region.
321 static void selectInterestingSourceRegion(std::string &SourceLine,
322 std::string &CaretLine,
323 std::string &FixItInsertionLine,
324 unsigned Columns,
325 const SourceColumnMap &map) {
326 unsigned CaretColumns = CaretLine.size();
327 unsigned FixItColumns = llvm::sys::locale::columnWidth(FixItInsertionLine);
328 unsigned MaxColumns = std::max(static_cast<unsigned>(map.columns()),
329 std::max(CaretColumns, FixItColumns));
330 // if the number of columns is less than the desired number we're done
331 if (MaxColumns <= Columns)
332 return;
333
334 // No special characters are allowed in CaretLine.
335 assert(CaretLine.end() ==
336 llvm::find_if(CaretLine, [](char c) { return c < ' ' || '~' < c; }));
337
338 // Find the slice that we need to display the full caret line
339 // correctly.
340 unsigned CaretStart = 0, CaretEnd = CaretLine.size();
341 for (; CaretStart != CaretEnd; ++CaretStart)
342 if (!isWhitespace(CaretLine[CaretStart]))
343 break;
344
345 for (; CaretEnd != CaretStart; --CaretEnd)
346 if (!isWhitespace(CaretLine[CaretEnd - 1]))
347 break;
348
349 // caret has already been inserted into CaretLine so the above whitespace
350 // check is guaranteed to include the caret
351
352 // If we have a fix-it line, make sure the slice includes all of the
353 // fix-it information.
354 if (!FixItInsertionLine.empty()) {
355 unsigned FixItStart = 0, FixItEnd = FixItInsertionLine.size();
356 for (; FixItStart != FixItEnd; ++FixItStart)
357 if (!isWhitespace(FixItInsertionLine[FixItStart]))
358 break;
359
360 for (; FixItEnd != FixItStart; --FixItEnd)
361 if (!isWhitespace(FixItInsertionLine[FixItEnd - 1]))
362 break;
363
364 // We can safely use the byte offset FixItStart as the column offset
365 // because the characters up until FixItStart are all ASCII whitespace
366 // characters.
367 unsigned FixItStartCol = FixItStart;
368 unsigned FixItEndCol
369 = llvm::sys::locale::columnWidth(FixItInsertionLine.substr(0, FixItEnd));
370
371 CaretStart = std::min(FixItStartCol, CaretStart);
372 CaretEnd = std::max(FixItEndCol, CaretEnd);
373 }
374
375 // CaretEnd may have been set at the middle of a character
376 // If it's not at a character's first column then advance it past the current
377 // character.
378 while (static_cast<int>(CaretEnd) < map.columns() &&
379 -1 == map.columnToByte(CaretEnd))
380 ++CaretEnd;
381
382 assert((static_cast<int>(CaretStart) > map.columns() ||
383 -1!=map.columnToByte(CaretStart)) &&
384 "CaretStart must not point to a column in the middle of a source"
385 " line character");
386 assert((static_cast<int>(CaretEnd) > map.columns() ||
387 -1!=map.columnToByte(CaretEnd)) &&
388 "CaretEnd must not point to a column in the middle of a source line"
389 " character");
390
391 // CaretLine[CaretStart, CaretEnd) contains all of the interesting
392 // parts of the caret line. While this slice is smaller than the
393 // number of columns we have, try to grow the slice to encompass
394 // more context.
395
396 unsigned SourceStart = map.columnToByte(std::min<unsigned>(CaretStart,
397 map.columns()));
398 unsigned SourceEnd = map.columnToByte(std::min<unsigned>(CaretEnd,
399 map.columns()));
400
401 unsigned CaretColumnsOutsideSource = CaretEnd-CaretStart
402 - (map.byteToColumn(SourceEnd)-map.byteToColumn(SourceStart));
403
404 char const *front_ellipse = " ...";
405 char const *front_space = " ";
406 char const *back_ellipse = "...";
407 unsigned ellipses_space = strlen(front_ellipse) + strlen(back_ellipse);
408
409 unsigned TargetColumns = Columns;
410 // Give us extra room for the ellipses
411 // and any of the caret line that extends past the source
412 if (TargetColumns > ellipses_space+CaretColumnsOutsideSource)
413 TargetColumns -= ellipses_space+CaretColumnsOutsideSource;
414
415 while (SourceStart>0 || SourceEnd<SourceLine.size()) {
416 bool ExpandedRegion = false;
417
418 if (SourceStart>0) {
419 unsigned NewStart = map.startOfPreviousColumn(SourceStart);
420
421 // Skip over any whitespace we see here; we're looking for
422 // another bit of interesting text.
423 // FIXME: Detect non-ASCII whitespace characters too.
424 while (NewStart && isWhitespace(SourceLine[NewStart]))
425 NewStart = map.startOfPreviousColumn(NewStart);
426
427 // Skip over this bit of "interesting" text.
428 while (NewStart) {
429 unsigned Prev = map.startOfPreviousColumn(NewStart);
430 if (isWhitespace(SourceLine[Prev]))
431 break;
432 NewStart = Prev;
433 }
434
435 assert(map.byteToColumn(NewStart) != -1);
436 unsigned NewColumns = map.byteToColumn(SourceEnd) -
437 map.byteToColumn(NewStart);
438 if (NewColumns <= TargetColumns) {
439 SourceStart = NewStart;
440 ExpandedRegion = true;
441 }
442 }
443
444 if (SourceEnd<SourceLine.size()) {
445 unsigned NewEnd = map.startOfNextColumn(SourceEnd);
446
447 // Skip over any whitespace we see here; we're looking for
448 // another bit of interesting text.
449 // FIXME: Detect non-ASCII whitespace characters too.
450 while (NewEnd < SourceLine.size() && isWhitespace(SourceLine[NewEnd]))
451 NewEnd = map.startOfNextColumn(NewEnd);
452
453 // Skip over this bit of "interesting" text.
454 while (NewEnd < SourceLine.size() && isWhitespace(SourceLine[NewEnd]))
455 NewEnd = map.startOfNextColumn(NewEnd);
456
457 assert(map.byteToColumn(NewEnd) != -1);
458 unsigned NewColumns = map.byteToColumn(NewEnd) -
459 map.byteToColumn(SourceStart);
460 if (NewColumns <= TargetColumns) {
461 SourceEnd = NewEnd;
462 ExpandedRegion = true;
463 }
464 }
465
466 if (!ExpandedRegion)
467 break;
468 }
469
470 CaretStart = map.byteToColumn(SourceStart);
471 CaretEnd = map.byteToColumn(SourceEnd) + CaretColumnsOutsideSource;
472
473 // [CaretStart, CaretEnd) is the slice we want. Update the various
474 // output lines to show only this slice, with two-space padding
475 // before the lines so that it looks nicer.
476
477 assert(CaretStart!=(unsigned)-1 && CaretEnd!=(unsigned)-1 &&
478 SourceStart!=(unsigned)-1 && SourceEnd!=(unsigned)-1);
479 assert(SourceStart <= SourceEnd);
480 assert(CaretStart <= CaretEnd);
481
482 unsigned BackColumnsRemoved
483 = map.byteToColumn(SourceLine.size())-map.byteToColumn(SourceEnd);
484 unsigned FrontColumnsRemoved = CaretStart;
485 unsigned ColumnsKept = CaretEnd-CaretStart;
486
487 // We checked up front that the line needed truncation
488 assert(FrontColumnsRemoved+ColumnsKept+BackColumnsRemoved > Columns);
489
490 // The line needs some truncation, and we'd prefer to keep the front
491 // if possible, so remove the back
492 if (BackColumnsRemoved > strlen(back_ellipse))
493 SourceLine.replace(SourceEnd, std::string::npos, back_ellipse);
494
495 // If that's enough then we're done
496 if (FrontColumnsRemoved+ColumnsKept <= Columns)
497 return;
498
499 // Otherwise remove the front as well
500 if (FrontColumnsRemoved > strlen(front_ellipse)) {
501 SourceLine.replace(0, SourceStart, front_ellipse);
502 CaretLine.replace(0, CaretStart, front_space);
503 if (!FixItInsertionLine.empty())
504 FixItInsertionLine.replace(0, CaretStart, front_space);
505 }
506 }
507
508 /// Skip over whitespace in the string, starting at the given
509 /// index.
510 ///
511 /// \returns The index of the first non-whitespace character that is
512 /// greater than or equal to Idx or, if no such character exists,
513 /// returns the end of the string.
514 static unsigned skipWhitespace(unsigned Idx, StringRef Str, unsigned Length) {
515 while (Idx < Length && isWhitespace(Str[Idx]))
516 ++Idx;
517 return Idx;
518 }
519
520 /// If the given character is the start of some kind of
521 /// balanced punctuation (e.g., quotes or parentheses), return the
522 /// character that will terminate the punctuation.
523 ///
524 /// \returns The ending punctuation character, if any, or the NULL
525 /// character if the input character does not start any punctuation.
526 static inline char findMatchingPunctuation(char c) {
527 switch (c) {
528 case '\'': return '\'';
529 case '`': return '\'';
530 case '"': return '"';
531 case '(': return ')';
532 case '[': return ']';
533 case '{': return '}';
534 default: break;
535 }
536
537 return 0;
538 }
539
540 /// Find the end of the word starting at the given offset
541 /// within a string.
542 ///
543 /// \returns the index pointing one character past the end of the
544 /// word.
545 static unsigned findEndOfWord(unsigned Start, StringRef Str,
546 unsigned Length, unsigned Column,
547 unsigned Columns) {
548 assert(Start < Str.size() && "Invalid start position!");
549 unsigned End = Start + 1;
550
551 // If we are already at the end of the string, take that as the word.
552 if (End == Str.size())
553 return End;
554
555 // Determine if the start of the string is actually opening
556 // punctuation, e.g., a quote or parentheses.
557 char EndPunct = findMatchingPunctuation(Str[Start]);
558 if (!EndPunct) {
559 // This is a normal word. Just find the first space character.
560 while (End < Length && !isWhitespace(Str[End]))
561 ++End;
562 return End;
563 }
564
565 // We have the start of a balanced punctuation sequence (quotes,
566 // parentheses, etc.). Determine the full sequence is.
567 SmallString<16> PunctuationEndStack;
568 PunctuationEndStack.push_back(EndPunct);
569 while (End < Length && !PunctuationEndStack.empty()) {
570 if (Str[End] == PunctuationEndStack.back())
571 PunctuationEndStack.pop_back();
572 else if (char SubEndPunct = findMatchingPunctuation(Str[End]))
573 PunctuationEndStack.push_back(SubEndPunct);
574
575 ++End;
576 }
577
578 // Find the first space character after the punctuation ended.
579 while (End < Length && !isWhitespace(Str[End]))
580 ++End;
581
582 unsigned PunctWordLength = End - Start;
583 if (// If the word fits on this line
584 Column + PunctWordLength <= Columns ||
585 // ... or the word is "short enough" to take up the next line
586 // without too much ugly white space
587 PunctWordLength < Columns/3)
588 return End; // Take the whole thing as a single "word".
589
590 // The whole quoted/parenthesized string is too long to print as a
591 // single "word". Instead, find the "word" that starts just after
592 // the punctuation and use that end-point instead. This will recurse
593 // until it finds something small enough to consider a word.
594 return findEndOfWord(Start + 1, Str, Length, Column + 1, Columns);
595 }
596
597 /// Print the given string to a stream, word-wrapping it to
598 /// some number of columns in the process.
599 ///
600 /// \param OS the stream to which the word-wrapping string will be
601 /// emitted.
602 /// \param Str the string to word-wrap and output.
603 /// \param Columns the number of columns to word-wrap to.
604 /// \param Column the column number at which the first character of \p
605 /// Str will be printed. This will be non-zero when part of the first
606 /// line has already been printed.
607 /// \param Bold if the current text should be bold
608 /// \param Indentation the number of spaces to indent any lines beyond
609 /// the first line.
610 /// \returns true if word-wrapping was required, or false if the
611 /// string fit on the first line.
612 static bool printWordWrapped(raw_ostream &OS, StringRef Str,
613 unsigned Columns,
614 unsigned Column = 0,
615 bool Bold = false,
616 unsigned Indentation = WordWrapIndentation) {
617 const unsigned Length = std::min(Str.find('\n'), Str.size());
618 bool TextNormal = true;
619
620 // The string used to indent each line.
621 SmallString<16> IndentStr;
622 IndentStr.assign(Indentation, ' ');
623 bool Wrapped = false;
624 for (unsigned WordStart = 0, WordEnd; WordStart < Length;
625 WordStart = WordEnd) {
626 // Find the beginning of the next word.
627 WordStart = skipWhitespace(WordStart, Str, Length);
628 if (WordStart == Length)
629 break;
630
631 // Find the end of this word.
632 WordEnd = findEndOfWord(WordStart, Str, Length, Column, Columns);
633
634 // Does this word fit on the current line?
635 unsigned WordLength = WordEnd - WordStart;
636 if (Column + WordLength < Columns) {
637 // This word fits on the current line; print it there.
638 if (WordStart) {
639 OS << ' ';
640 Column += 1;
641 }
642 applyTemplateHighlighting(OS, Str.substr(WordStart, WordLength),
643 TextNormal, Bold);
644 Column += WordLength;
645 continue;
646 }
647
648 // This word does not fit on the current line, so wrap to the next
649 // line.
650 OS << '\n';
651 OS.write(&IndentStr[0], Indentation);
652 applyTemplateHighlighting(OS, Str.substr(WordStart, WordLength),
653 TextNormal, Bold);
654 Column = Indentation + WordLength;
655 Wrapped = true;
656 }
657
658 // Append any remaning text from the message with its existing formatting.
659 applyTemplateHighlighting(OS, Str.substr(Length), TextNormal, Bold);
660
661 assert(TextNormal && "Text highlighted at end of diagnostic message.");
662
663 return Wrapped;
664 }
665
666 TextDiagnostic::TextDiagnostic(raw_ostream &OS,
667 const LangOptions &LangOpts,
668 DiagnosticOptions *DiagOpts)
669 : DiagnosticRenderer(LangOpts, DiagOpts), OS(OS) {}
670
671 TextDiagnostic::~TextDiagnostic() {}
672
673 void TextDiagnostic::emitDiagnosticMessage(
674 FullSourceLoc Loc, PresumedLoc PLoc, DiagnosticsEngine::Level Level,
675 StringRef Message, ArrayRef<clang::CharSourceRange> Ranges,
676 DiagOrStoredDiag D) {
677 uint64_t StartOfLocationInfo = OS.tell();
678
679 // Emit the location of this particular diagnostic.
680 if (Loc.isValid())
681 emitDiagnosticLoc(Loc, PLoc, Level, Ranges);
682
683 if (DiagOpts->ShowColors)
684 OS.resetColor();
685
686 if (DiagOpts->ShowLevel)
687 printDiagnosticLevel(OS, Level, DiagOpts->ShowColors,
688 DiagOpts->CLFallbackMode);
689 printDiagnosticMessage(OS,
690 /*IsSupplemental*/ Level == DiagnosticsEngine::Note,
691 Message, OS.tell() - StartOfLocationInfo,
692 DiagOpts->MessageLength, DiagOpts->ShowColors);
693 }
694
695 /*static*/ void
696 TextDiagnostic::printDiagnosticLevel(raw_ostream &OS,
697 DiagnosticsEngine::Level Level,
698 bool ShowColors,
699 bool CLFallbackMode) {
700 if (ShowColors) {
701 // Print diagnostic category in bold and color
702 switch (Level) {
703 case DiagnosticsEngine::Ignored:
704 llvm_unreachable("Invalid diagnostic type");
705 case DiagnosticsEngine::Note: OS.changeColor(noteColor, true); break;
706 case DiagnosticsEngine::Remark: OS.changeColor(remarkColor, true); break;
707 case DiagnosticsEngine::Warning: OS.changeColor(warningColor, true); break;
708 case DiagnosticsEngine::Error: OS.changeColor(errorColor, true); break;
709 case DiagnosticsEngine::Fatal: OS.changeColor(fatalColor, true); break;
710 }
711 }
712
713 switch (Level) {
714 case DiagnosticsEngine::Ignored:
715 llvm_unreachable("Invalid diagnostic type");
716 case DiagnosticsEngine::Note: OS << "note"; break;
717 case DiagnosticsEngine::Remark: OS << "remark"; break;
718 case DiagnosticsEngine::Warning: OS << "warning"; break;
719 case DiagnosticsEngine::Error: OS << "error"; break;
720 case DiagnosticsEngine::Fatal: OS << "fatal error"; break;
721 }
722
723 // In clang-cl /fallback mode, print diagnostics as "error(clang):". This
724 // makes it more clear whether a message is coming from clang or cl.exe,
725 // and it prevents MSBuild from concluding that the build failed just because
726 // there is an "error:" in the output.
727 if (CLFallbackMode)
728 OS << "(clang)";
729
730 OS << ": ";
731
732 if (ShowColors)
733 OS.resetColor();
734 }
735
736 /*static*/
737 void TextDiagnostic::printDiagnosticMessage(raw_ostream &OS,
738 bool IsSupplemental,
739 StringRef Message,
740 unsigned CurrentColumn,
741 unsigned Columns, bool ShowColors) {
742 bool Bold = false;
743 if (ShowColors && !IsSupplemental) {
744 // Print primary diagnostic messages in bold and without color, to visually
745 // indicate the transition from continuation notes and other output.
746 OS.changeColor(savedColor, true);
747 Bold = true;
748 }
749
750 if (Columns)
751 printWordWrapped(OS, Message, Columns, CurrentColumn, Bold);
752 else {
753 bool Normal = true;
754 applyTemplateHighlighting(OS, Message, Normal, Bold);
755 assert(Normal && "Formatting should have returned to normal");
756 }
757
758 if (ShowColors)
759 OS.resetColor();
760 OS << '\n';
761 }
762
763 void TextDiagnostic::emitFilename(StringRef Filename, const SourceManager &SM) {
764 #ifdef _WIN32
765 SmallString<4096> TmpFilename;
766 #endif
767 if (DiagOpts->AbsolutePath) {
768 auto File = SM.getFileManager().getFile(Filename);
769 if (File) {
770 // We want to print a simplified absolute path, i. e. without "dots".
771 //
772 // The hardest part here are the paths like "<part1>/<link>/../<part2>".
773 // On Unix-like systems, we cannot just collapse "<link>/..", because
774 // paths are resolved sequentially, and, thereby, the path
775 // "<part1>/<part2>" may point to a different location. That is why
776 // we use FileManager::getCanonicalName(), which expands all indirections
777 // with llvm::sys::fs::real_path() and caches the result.
778 //
779 // On the other hand, it would be better to preserve as much of the
780 // original path as possible, because that helps a user to recognize it.
781 // real_path() expands all links, which sometimes too much. Luckily,
782 // on Windows we can just use llvm::sys::path::remove_dots(), because,
783 // on that system, both aforementioned paths point to the same place.
784 #ifdef _WIN32
785 TmpFilename = (*File)->getName();
786 llvm::sys::fs::make_absolute(TmpFilename);
787 llvm::sys::path::native(TmpFilename);
788 llvm::sys::path::remove_dots(TmpFilename, /* remove_dot_dot */ true);
789 Filename = StringRef(TmpFilename.data(), TmpFilename.size());
790 #else
791 Filename = SM.getFileManager().getCanonicalName(*File);
792 #endif
793 }
794 }
795
796 OS << Filename;
797 }
798
799 /// Print out the file/line/column information and include trace.
800 ///
801 /// This method handlen the emission of the diagnostic location information.
802 /// This includes extracting as much location information as is present for
803 /// the diagnostic and printing it, as well as any include stack or source
804 /// ranges necessary.
805 void TextDiagnostic::emitDiagnosticLoc(FullSourceLoc Loc, PresumedLoc PLoc,
806 DiagnosticsEngine::Level Level,
807 ArrayRef<CharSourceRange> Ranges) {
808 if (PLoc.isInvalid()) {
809 // At least print the file name if available:
810 FileID FID = Loc.getFileID();
811 if (FID.isValid()) {
812 const FileEntry *FE = Loc.getFileEntry();
813 if (FE && FE->isValid()) {
814 emitFilename(FE->getName(), Loc.getManager());
815 OS << ": ";
816 }
817 }
818 return;
819 }
820 unsigned LineNo = PLoc.getLine();
821
822 if (!DiagOpts->ShowLocation)
823 return;
824
825 if (DiagOpts->ShowColors)
826 OS.changeColor(savedColor, true);
827
828 emitFilename(PLoc.getFilename(), Loc.getManager());
829 switch (DiagOpts->getFormat()) {
830 case DiagnosticOptions::Clang: OS << ':' << LineNo; break;
831 case DiagnosticOptions::MSVC: OS << '(' << LineNo; break;
832 case DiagnosticOptions::Vi: OS << " +" << LineNo; break;
833 }
834
835 if (DiagOpts->ShowColumn)
836 // Compute the column number.
837 if (unsigned ColNo = PLoc.getColumn()) {
838 if (DiagOpts->getFormat() == DiagnosticOptions::MSVC) {
839 OS << ',';
840 // Visual Studio 2010 or earlier expects column number to be off by one
841 if (LangOpts.MSCompatibilityVersion &&
842 !LangOpts.isCompatibleWithMSVC(LangOptions::MSVC2012))
843 ColNo--;
844 } else
845 OS << ':';
846 OS << ColNo;
847 }
848 switch (DiagOpts->getFormat()) {
849 case DiagnosticOptions::Clang:
850 case DiagnosticOptions::Vi: OS << ':'; break;
851 case DiagnosticOptions::MSVC:
852 // MSVC2013 and before print 'file(4) : error'. MSVC2015 gets rid of the
853 // space and prints 'file(4): error'.
854 OS << ')';
855 if (LangOpts.MSCompatibilityVersion &&
856 !LangOpts.isCompatibleWithMSVC(LangOptions::MSVC2015))
857 OS << ' ';
858 OS << ':';
859 break;
860 }
861
862 if (DiagOpts->ShowSourceRanges && !Ranges.empty()) {
863 FileID CaretFileID = Loc.getExpansionLoc().getFileID();
864 bool PrintedRange = false;
865
866 for (ArrayRef<CharSourceRange>::const_iterator RI = Ranges.begin(),
867 RE = Ranges.end();
868 RI != RE; ++RI) {
869 // Ignore invalid ranges.
870 if (!RI->isValid()) continue;
871
872 auto &SM = Loc.getManager();
873 SourceLocation B = SM.getExpansionLoc(RI->getBegin());
874 CharSourceRange ERange = SM.getExpansionRange(RI->getEnd());
875 SourceLocation E = ERange.getEnd();
876 bool IsTokenRange = ERange.isTokenRange();
877
878 std::pair<FileID, unsigned> BInfo = SM.getDecomposedLoc(B);
879 std::pair<FileID, unsigned> EInfo = SM.getDecomposedLoc(E);
880
881 // If the start or end of the range is in another file, just discard
882 // it.
883 if (BInfo.first != CaretFileID || EInfo.first != CaretFileID)
884 continue;
885
886 // Add in the length of the token, so that we cover multi-char
887 // tokens.
888 unsigned TokSize = 0;
889 if (IsTokenRange)
890 TokSize = Lexer::MeasureTokenLength(E, SM, LangOpts);
891
892 FullSourceLoc BF(B, SM), EF(E, SM);
893 OS << '{'
894 << BF.getLineNumber() << ':' << BF.getColumnNumber() << '-'
895 << EF.getLineNumber() << ':' << (EF.getColumnNumber() + TokSize)
896 << '}';
897 PrintedRange = true;
898 }
899
900 if (PrintedRange)
901 OS << ':';
902 }
903 OS << ' ';
904 }
905
906 void TextDiagnostic::emitIncludeLocation(FullSourceLoc Loc, PresumedLoc PLoc) {
907 if (DiagOpts->ShowLocation && PLoc.isValid())
908 OS << "In file included from " << PLoc.getFilename() << ':'
909 << PLoc.getLine() << ":\n";
910 else
911 OS << "In included file:\n";
912 }
913
914 void TextDiagnostic::emitImportLocation(FullSourceLoc Loc, PresumedLoc PLoc,
915 StringRef ModuleName) {
916 if (DiagOpts->ShowLocation && PLoc.isValid())
917 OS << "In module '" << ModuleName << "' imported from "
918 << PLoc.getFilename() << ':' << PLoc.getLine() << ":\n";
919 else
920 OS << "In module '" << ModuleName << "':\n";
921 }
922
923 void TextDiagnostic::emitBuildingModuleLocation(FullSourceLoc Loc,
924 PresumedLoc PLoc,
925 StringRef ModuleName) {
926 if (DiagOpts->ShowLocation && PLoc.isValid())
927 OS << "While building module '" << ModuleName << "' imported from "
928 << PLoc.getFilename() << ':' << PLoc.getLine() << ":\n";
929 else
930 OS << "While building module '" << ModuleName << "':\n";
931 }
932
933 /// Find the suitable set of lines to show to include a set of ranges.
934 static llvm::Optional<std::pair<unsigned, unsigned>>
935 findLinesForRange(const CharSourceRange &R, FileID FID,
936 const SourceManager &SM) {
937 if (!R.isValid()) return None;
938
939 SourceLocation Begin = R.getBegin();
940 SourceLocation End = R.getEnd();
941 if (SM.getFileID(Begin) != FID || SM.getFileID(End) != FID)
942 return None;
943
944 return std::make_pair(SM.getExpansionLineNumber(Begin),
945 SM.getExpansionLineNumber(End));
946 }
947
948 /// Add as much of range B into range A as possible without exceeding a maximum
949 /// size of MaxRange. Ranges are inclusive.
950 static std::pair<unsigned, unsigned>
951 maybeAddRange(std::pair<unsigned, unsigned> A, std::pair<unsigned, unsigned> B,
952 unsigned MaxRange) {
953 // If A is already the maximum size, we're done.
954 unsigned Slack = MaxRange - (A.second - A.first + 1);
955 if (Slack == 0)
956 return A;
957
958 // Easy case: merge succeeds within MaxRange.
959 unsigned Min = std::min(A.first, B.first);
960 unsigned Max = std::max(A.second, B.second);
961 if (Max - Min + 1 <= MaxRange)
962 return {Min, Max};
963
964 // If we can't reach B from A within MaxRange, there's nothing to do.
965 // Don't add lines to the range that contain nothing interesting.
966 if ((B.first > A.first && B.first - A.first + 1 > MaxRange) ||
967 (B.second < A.second && A.second - B.second + 1 > MaxRange))
968 return A;
969
970 // Otherwise, expand A towards B to produce a range of size MaxRange. We
971 // attempt to expand by the same amount in both directions if B strictly
972 // contains A.
973
974 // Expand downwards by up to half the available amount, then upwards as
975 // much as possible, then downwards as much as possible.
976 A.second = std::min(A.second + (Slack + 1) / 2, Max);
977 Slack = MaxRange - (A.second - A.first + 1);
978 A.first = std::max(Min + Slack, A.first) - Slack;
979 A.second = std::min(A.first + MaxRange - 1, Max);
980 return A;
981 }
982
983 /// Highlight a SourceRange (with ~'s) for any characters on LineNo.
984 static void highlightRange(const CharSourceRange &R,
985 unsigned LineNo, FileID FID,
986 const SourceColumnMap &map,
987 std::string &CaretLine,
988 const SourceManager &SM,
989 const LangOptions &LangOpts) {
990 if (!R.isValid()) return;
991
992 SourceLocation Begin = R.getBegin();
993 SourceLocation End = R.getEnd();
994
995 unsigned StartLineNo = SM.getExpansionLineNumber(Begin);
996 if (StartLineNo > LineNo || SM.getFileID(Begin) != FID)
997 return; // No intersection.
998
999 unsigned EndLineNo = SM.getExpansionLineNumber(End);
1000 if (EndLineNo < LineNo || SM.getFileID(End) != FID)
1001 return; // No intersection.
1002
1003 // Compute the column number of the start.
1004 unsigned StartColNo = 0;
1005 if (StartLineNo == LineNo) {
1006 StartColNo = SM.getExpansionColumnNumber(Begin);
1007 if (StartColNo) --StartColNo; // Zero base the col #.
1008 }
1009
1010 // Compute the column number of the end.
1011 unsigned EndColNo = map.getSourceLine().size();
1012 if (EndLineNo == LineNo) {
1013 EndColNo = SM.getExpansionColumnNumber(End);
1014 if (EndColNo) {
1015 --EndColNo; // Zero base the col #.
1016
1017 // Add in the length of the token, so that we cover multi-char tokens if
1018 // this is a token range.
1019 if (R.isTokenRange())
1020 EndColNo += Lexer::MeasureTokenLength(End, SM, LangOpts);
1021 } else {
1022 EndColNo = CaretLine.size();
1023 }
1024 }
1025
1026 assert(StartColNo <= EndColNo && "Invalid range!");
1027
1028 // Check that a token range does not highlight only whitespace.
1029 if (R.isTokenRange()) {
1030 // Pick the first non-whitespace column.
1031 while (StartColNo < map.getSourceLine().size() &&
1032 (map.getSourceLine()[StartColNo] == ' ' ||
1033 map.getSourceLine()[StartColNo] == '\t'))
1034 StartColNo = map.startOfNextColumn(StartColNo);
1035
1036 // Pick the last non-whitespace column.
1037 if (EndColNo > map.getSourceLine().size())
1038 EndColNo = map.getSourceLine().size();
1039 while (EndColNo &&
1040 (map.getSourceLine()[EndColNo-1] == ' ' ||
1041 map.getSourceLine()[EndColNo-1] == '\t'))
1042 EndColNo = map.startOfPreviousColumn(EndColNo);
1043
1044 // If the start/end passed each other, then we are trying to highlight a
1045 // range that just exists in whitespace. That most likely means we have
1046 // a multi-line highlighting range that covers a blank line.
1047 if (StartColNo > EndColNo) {
1048 assert(StartLineNo != EndLineNo && "trying to highlight whitespace");
1049 StartColNo = EndColNo;
1050 }
1051 }
1052
1053 assert(StartColNo <= map.getSourceLine().size() && "Invalid range!");
1054 assert(EndColNo <= map.getSourceLine().size() && "Invalid range!");
1055
1056 // Fill the range with ~'s.
1057 StartColNo = map.byteToContainingColumn(StartColNo);
1058 EndColNo = map.byteToContainingColumn(EndColNo);
1059
1060 assert(StartColNo <= EndColNo && "Invalid range!");
1061 if (CaretLine.size() < EndColNo)
1062 CaretLine.resize(EndColNo,' ');
1063 std::fill(CaretLine.begin()+StartColNo,CaretLine.begin()+EndColNo,'~');
1064 }
1065
1066 static std::string buildFixItInsertionLine(FileID FID,
1067 unsigned LineNo,
1068 const SourceColumnMap &map,
1069 ArrayRef<FixItHint> Hints,
1070 const SourceManager &SM,
1071 const DiagnosticOptions *DiagOpts) {
1072 std::string FixItInsertionLine;
1073 if (Hints.empty() || !DiagOpts->ShowFixits)
1074 return FixItInsertionLine;
1075 unsigned PrevHintEndCol = 0;
1076
1077 for (ArrayRef<FixItHint>::iterator I = Hints.begin(), E = Hints.end();
1078 I != E; ++I) {
1079 if (!I->CodeToInsert.empty()) {
1080 // We have an insertion hint. Determine whether the inserted
1081 // code contains no newlines and is on the same line as the caret.
1082 std::pair<FileID, unsigned> HintLocInfo
1083 = SM.getDecomposedExpansionLoc(I->RemoveRange.getBegin());
1084 if (FID == HintLocInfo.first &&
1085 LineNo == SM.getLineNumber(HintLocInfo.first, HintLocInfo.second) &&
1086 StringRef(I->CodeToInsert).find_first_of("\n\r") == StringRef::npos) {
1087 // Insert the new code into the line just below the code
1088 // that the user wrote.
1089 // Note: When modifying this function, be very careful about what is a
1090 // "column" (printed width, platform-dependent) and what is a
1091 // "byte offset" (SourceManager "column").
1092 unsigned HintByteOffset
1093 = SM.getColumnNumber(HintLocInfo.first, HintLocInfo.second) - 1;
1094
1095 // The hint must start inside the source or right at the end
1096 assert(HintByteOffset < static_cast<unsigned>(map.bytes())+1);
1097 unsigned HintCol = map.byteToContainingColumn(HintByteOffset);
1098
1099 // If we inserted a long previous hint, push this one forwards, and add
1100 // an extra space to show that this is not part of the previous
1101 // completion. This is sort of the best we can do when two hints appear
1102 // to overlap.
1103 //
1104 // Note that if this hint is located immediately after the previous
1105 // hint, no space will be added, since the location is more important.
1106 if (HintCol < PrevHintEndCol)
1107 HintCol = PrevHintEndCol + 1;
1108
1109 // This should NOT use HintByteOffset, because the source might have
1110 // Unicode characters in earlier columns.
1111 unsigned NewFixItLineSize = FixItInsertionLine.size() +
1112 (HintCol - PrevHintEndCol) + I->CodeToInsert.size();
1113 if (NewFixItLineSize > FixItInsertionLine.size())
1114 FixItInsertionLine.resize(NewFixItLineSize, ' ');
1115
1116 std::copy(I->CodeToInsert.begin(), I->CodeToInsert.end(),
1117 FixItInsertionLine.end() - I->CodeToInsert.size());
1118
1119 PrevHintEndCol =
1120 HintCol + llvm::sys::locale::columnWidth(I->CodeToInsert);
1121 }
1122 }
1123 }
1124
1125 expandTabs(FixItInsertionLine, DiagOpts->TabStop);
1126
1127 return FixItInsertionLine;
1128 }
1129
1130 /// Emit a code snippet and caret line.
1131 ///
1132 /// This routine emits a single line's code snippet and caret line..
1133 ///
1134 /// \param Loc The location for the caret.
1135 /// \param Ranges The underlined ranges for this code snippet.
1136 /// \param Hints The FixIt hints active for this diagnostic.
1137 void TextDiagnostic::emitSnippetAndCaret(
1138 FullSourceLoc Loc, DiagnosticsEngine::Level Level,
1139 SmallVectorImpl<CharSourceRange> &Ranges, ArrayRef<FixItHint> Hints) {
1140 assert(Loc.isValid() && "must have a valid source location here");
1141 assert(Loc.isFileID() && "must have a file location here");
1142
1143 // If caret diagnostics are enabled and we have location, we want to
1144 // emit the caret. However, we only do this if the location moved
1145 // from the last diagnostic, if the last diagnostic was a note that
1146 // was part of a different warning or error diagnostic, or if the
1147 // diagnostic has ranges. We don't want to emit the same caret
1148 // multiple times if one loc has multiple diagnostics.
1149 if (!DiagOpts->ShowCarets)
1150 return;
1151 if (Loc == LastLoc && Ranges.empty() && Hints.empty() &&
1152 (LastLevel != DiagnosticsEngine::Note || Level == LastLevel))
1153 return;
1154
1155 // Decompose the location into a FID/Offset pair.
1156 std::pair<FileID, unsigned> LocInfo = Loc.getDecomposedLoc();
1157 FileID FID = LocInfo.first;
1158 const SourceManager &SM = Loc.getManager();
1159
1160 // Get information about the buffer it points into.
1161 bool Invalid = false;
1162 StringRef BufData = Loc.getBufferData(&Invalid);
1163 if (Invalid)
1164 return;
1165
1166 unsigned CaretLineNo = Loc.getLineNumber();
1167 unsigned CaretColNo = Loc.getColumnNumber();
1168
1169 // Arbitrarily stop showing snippets when the line is too long.
1170 static const size_t MaxLineLengthToPrint = 4096;
1171 if (CaretColNo > MaxLineLengthToPrint)
1172 return;
1173
1174 // Find the set of lines to include.
1175 const unsigned MaxLines = DiagOpts->SnippetLineLimit;
1176 std::pair<unsigned, unsigned> Lines = {CaretLineNo, CaretLineNo};
1177 for (SmallVectorImpl<CharSourceRange>::iterator I = Ranges.begin(),
1178 E = Ranges.end();
1179 I != E; ++I)
1180 if (auto OptionalRange = findLinesForRange(*I, FID, SM))
1181 Lines = maybeAddRange(Lines, *OptionalRange, MaxLines);
1182
1183 for (unsigned LineNo = Lines.first; LineNo != Lines.second + 1; ++LineNo) {
1184 const char *BufStart = BufData.data();
1185 const char *BufEnd = BufStart + BufData.size();
1186
1187 // Rewind from the current position to the start of the line.
1188 const char *LineStart =
1189 BufStart +
1190 SM.getDecomposedLoc(SM.translateLineCol(FID, LineNo, 1)).second;
1191 if (LineStart == BufEnd)
1192 break;
1193
1194 // Compute the line end.
1195 const char *LineEnd = LineStart;
1196 while (*LineEnd != '\n' && *LineEnd != '\r' && LineEnd != BufEnd)
1197 ++LineEnd;
1198
1199 // Arbitrarily stop showing snippets when the line is too long.
1200 // FIXME: Don't print any lines in this case.
1201 if (size_t(LineEnd - LineStart) > MaxLineLengthToPrint)
1202 return;
1203
1204 // Trim trailing null-bytes.
1205 StringRef Line(LineStart, LineEnd - LineStart);
1206 while (!Line.empty() && Line.back() == '\0' &&
1207 (LineNo != CaretLineNo || Line.size() > CaretColNo))
1208 Line = Line.drop_back();
1209
1210 // Copy the line of code into an std::string for ease of manipulation.
1211 std::string SourceLine(Line.begin(), Line.end());
1212
1213 // Build the byte to column map.
1214 const SourceColumnMap sourceColMap(SourceLine, DiagOpts->TabStop);
1215
1216 // Create a line for the caret that is filled with spaces that is the same
1217 // number of columns as the line of source code.
1218 std::string CaretLine(sourceColMap.columns(), ' ');
1219
1220 // Highlight all of the characters covered by Ranges with ~ characters.
1221 for (SmallVectorImpl<CharSourceRange>::iterator I = Ranges.begin(),
1222 E = Ranges.end();
1223 I != E; ++I)
1224 highlightRange(*I, LineNo, FID, sourceColMap, CaretLine, SM, LangOpts);
1225
1226 // Next, insert the caret itself.
1227 if (CaretLineNo == LineNo) {
1228 CaretColNo = sourceColMap.byteToContainingColumn(CaretColNo - 1);
1229 if (CaretLine.size() < CaretColNo + 1)
1230 CaretLine.resize(CaretColNo + 1, ' ');
1231 CaretLine[CaretColNo] = '^';
1232 }
1233
1234 std::string FixItInsertionLine = buildFixItInsertionLine(
1235 FID, LineNo, sourceColMap, Hints, SM, DiagOpts.get());
1236
1237 // If the source line is too long for our terminal, select only the
1238 // "interesting" source region within that line.
1239 unsigned Columns = DiagOpts->MessageLength;
1240 if (Columns)
1241 selectInterestingSourceRegion(SourceLine, CaretLine, FixItInsertionLine,
1242 Columns, sourceColMap);
1243
1244 // If we are in -fdiagnostics-print-source-range-info mode, we are trying
1245 // to produce easily machine parsable output. Add a space before the
1246 // source line and the caret to make it trivial to tell the main diagnostic
1247 // line from what the user is intended to see.
1248 if (DiagOpts->ShowSourceRanges) {
1249 SourceLine = ' ' + SourceLine;
1250 CaretLine = ' ' + CaretLine;
1251 }
1252
1253 // Finally, remove any blank spaces from the end of CaretLine.
1254 while (!CaretLine.empty() && CaretLine[CaretLine.size() - 1] == ' ')
1255 CaretLine.erase(CaretLine.end() - 1);
1256
1257 // Emit what we have computed.
1258 emitSnippet(SourceLine);
1259
1260 if (!CaretLine.empty()) {
1261 if (DiagOpts->ShowColors)
1262 OS.changeColor(caretColor, true);
1263 OS << CaretLine << '\n';
1264 if (DiagOpts->ShowColors)
1265 OS.resetColor();
1266 }
1267
1268 if (!FixItInsertionLine.empty()) {
1269 if (DiagOpts->ShowColors)
1270 // Print fixit line in color
1271 OS.changeColor(fixitColor, false);
1272 if (DiagOpts->ShowSourceRanges)
1273 OS << ' ';
1274 OS << FixItInsertionLine << '\n';
1275 if (DiagOpts->ShowColors)
1276 OS.resetColor();
1277 }
1278 }
1279
1280 // Print out any parseable fixit information requested by the options.
1281 emitParseableFixits(Hints, SM);
1282 }
1283
1284 void TextDiagnostic::emitSnippet(StringRef line) {
1285 if (line.empty())
1286 return;
1287
1288 size_t i = 0;
1289
1290 std::string to_print;
1291 bool print_reversed = false;
1292
1293 while (i<line.size()) {
1294 std::pair<SmallString<16>,bool> res
1295 = printableTextForNextCharacter(line, &i, DiagOpts->TabStop);
1296 bool was_printable = res.second;
1297
1298 if (DiagOpts->ShowColors && was_printable == print_reversed) {
1299 if (print_reversed)
1300 OS.reverseColor();
1301 OS << to_print;
1302 to_print.clear();
1303 if (DiagOpts->ShowColors)
1304 OS.resetColor();
1305 }
1306
1307 print_reversed = !was_printable;
1308 to_print += res.first.str();
1309 }
1310
1311 if (print_reversed && DiagOpts->ShowColors)
1312 OS.reverseColor();
1313 OS << to_print;
1314 if (print_reversed && DiagOpts->ShowColors)
1315 OS.resetColor();
1316
1317 OS << '\n';
1318 }
1319
1320 void TextDiagnostic::emitParseableFixits(ArrayRef<FixItHint> Hints,
1321 const SourceManager &SM) {
1322 if (!DiagOpts->ShowParseableFixits)
1323 return;
1324
1325 // We follow FixItRewriter's example in not (yet) handling
1326 // fix-its in macros.
1327 for (ArrayRef<FixItHint>::iterator I = Hints.begin(), E = Hints.end();
1328 I != E; ++I) {
1329 if (I->RemoveRange.isInvalid() ||
1330 I->RemoveRange.getBegin().isMacroID() ||
1331 I->RemoveRange.getEnd().isMacroID())
1332 return;
1333 }
1334
1335 for (ArrayRef<FixItHint>::iterator I = Hints.begin(), E = Hints.end();
1336 I != E; ++I) {
1337 SourceLocation BLoc = I->RemoveRange.getBegin();
1338 SourceLocation ELoc = I->RemoveRange.getEnd();
1339
1340 std::pair<FileID, unsigned> BInfo = SM.getDecomposedLoc(BLoc);
1341 std::pair<FileID, unsigned> EInfo = SM.getDecomposedLoc(ELoc);
1342
1343 // Adjust for token ranges.
1344 if (I->RemoveRange.isTokenRange())
1345 EInfo.second += Lexer::MeasureTokenLength(ELoc, SM, LangOpts);
1346
1347 // We specifically do not do word-wrapping or tab-expansion here,
1348 // because this is supposed to be easy to parse.
1349 PresumedLoc PLoc = SM.getPresumedLoc(BLoc);
1350 if (PLoc.isInvalid())
1351 break;
1352
1353 OS << "fix-it:\"";
1354 OS.write_escaped(PLoc.getFilename());
1355 OS << "\":{" << SM.getLineNumber(BInfo.first, BInfo.second)
1356 << ':' << SM.getColumnNumber(BInfo.first, BInfo.second)
1357 << '-' << SM.getLineNumber(EInfo.first, EInfo.second)
1358 << ':' << SM.getColumnNumber(EInfo.first, EInfo.second)
1359 << "}:\"";
1360 OS.write_escaped(I->CodeToInsert);
1361 OS << "\"\n";
1362 }
1363 }
clang::OverloadCandidateParamOrder::Normal
clang::LangOptions::isCompatibleWithMSVC
bool isCompatibleWithMSVC(MSVCMajorVersion MajorVersion) const
Definition: LangOptions.h:331
FileManager.h
Defines the clang::FileManager interface and associated types.
clang::FullSourceLoc::getExpansionLoc
FullSourceLoc getExpansionLoc() const
Definition: SourceLocation.cpp:145
SourceManager.h
Defines the SourceManager interface.
fatalColor
static enum raw_ostream::Colors fatalColor
Definition: TextDiagnostic.cpp:39
clang::SourceManager::getColumnNumber
unsigned getColumnNumber(FileID FID, unsigned FilePos, bool *Invalid=nullptr) const
Return the column # for the specified file position.
Definition: SourceManager.cpp:1151
clang::DiagOrStoredDiag
llvm::PointerUnion< const Diagnostic *, const StoredDiagnostic * > DiagOrStoredDiag
Definition: DiagnosticRenderer.h:33
TextDiagnostic.h
clang::LangOptions::MSVC2012
Definition: LangOptions.h:114
clang::DiagnosticRenderer::LangOpts
const LangOptions & LangOpts
Definition: DiagnosticRenderer.h:49
findEndOfWord
static unsigned findEndOfWord(unsigned Start, StringRef Str, unsigned Length, unsigned Column, unsigned Columns)
Find the end of the word starting at the given offset within a string.
Definition: TextDiagnostic.cpp:545
caretColor
static enum raw_ostream::Colors caretColor
Definition: TextDiagnostic.cpp:32
templateColor
static enum raw_ostream::Colors templateColor
Definition: TextDiagnostic.cpp:36
errorColor
static enum raw_ostream::Colors errorColor
Definition: TextDiagnostic.cpp:38
clang::FullSourceLoc::getFileID
FileID getFileID() const
Definition: SourceLocation.cpp:140
bytes
static StringRef bytes(const std::vector< T, Allocator > &v)
Definition: ASTWriter.cpp:121
fixitColor
static enum raw_ostream::Colors fixitColor
Definition: TextDiagnostic.cpp:30
clang::SourceManager::getFileManager
FileManager & getFileManager() const
Definition: SourceManager.h:773
clang::CharSourceRange::getBegin
SourceLocation getBegin() const
Definition: SourceLocation.h:280
printableTextForNextCharacter
static std::pair< SmallString< 16 >, bool > printableTextForNextCharacter(StringRef SourceLine, size_t *i, unsigned TabStop)
returns a printable representation of first item from input range
Definition: TextDiagnostic.cpp:98
llvm::Optional
Definition: LLVM.h:37
clang::DiagnosticsEngine::Note
Definition: Diagnostic.h:154
max
__DEVICE__ int max(int __a, int __b)
Definition: __clang_cuda_device_functions.h:1628
clang::LangOptions
Keeps track of the various options that can be enabled, which controls the dialect of C or C++ that i...
Definition: LangOptions.h:53
llvm::SmallVectorImpl
Definition: LLVM.h:36
clang::CharSourceRange::isValid
bool isValid() const
Definition: SourceLocation.h:288
clang::DiagnosticRenderer
Class to encapsulate the logic for formatting a diagnostic message.
Definition: DiagnosticRenderer.h:47
clang::DiagnosticOptions::Vi
Definition: DiagnosticOptions.h:65
clang::SourceManager::getDecomposedExpansionLoc
std::pair< FileID, unsigned > getDecomposedExpansionLoc(SourceLocation Loc) const
Decompose the specified location into a raw FileID + Offset pair.
Definition: SourceManager.h:1252
clang::isWhitespace
LLVM_READONLY bool isWhitespace(unsigned char c)
Return true if this character is horizontal or vertical ASCII whitespace: &#39; &#39;, &#39;\t&#39;, &#39;\f&#39;, &#39;\v&#39;, &#39;\n&#39;, &#39;\r&#39;.
Definition: CharInfo.h:87
maybeAddRange
static std::pair< unsigned, unsigned > maybeAddRange(std::pair< unsigned, unsigned > A, std::pair< unsigned, unsigned > B, unsigned MaxRange)
Add as much of range B into range A as possible without exceeding a maximum size of MaxRange...
Definition: TextDiagnostic.cpp:951
clang::SourceManager::getExpansionLoc
SourceLocation getExpansionLoc(SourceLocation Loc) const
Given a SourceLocation object Loc, return the expansion location referenced by the ID...
Definition: SourceManager.h:1159
selectInterestingSourceRegion
static void selectInterestingSourceRegion(std::string &SourceLine, std::string &CaretLine, std::string &FixItInsertionLine, unsigned Columns, const SourceColumnMap &map)
When the source code line we want to print is too long for the terminal, select the "interesting" reg...
Definition: TextDiagnostic.cpp:321
clang::TextDiagnostic::emitDiagnosticMessage
void emitDiagnosticMessage(FullSourceLoc Loc, PresumedLoc PLoc, DiagnosticsEngine::Level Level, StringRef Message, ArrayRef< CharSourceRange > Ranges, DiagOrStoredDiag D) override
Definition: TextDiagnostic.cpp:673
printWordWrapped
static bool printWordWrapped(raw_ostream &OS, StringRef Str, unsigned Columns, unsigned Column=0, bool Bold=false, unsigned Indentation=WordWrapIndentation)
Print the given string to a stream, word-wrapping it to some number of columns in the process...
Definition: TextDiagnostic.cpp:612
clang::DiagnosticRenderer::LastLevel
DiagnosticsEngine::Level LastLevel
The level of the last diagnostic emitted.
Definition: DiagnosticRenderer.h:69
clang::SourceLocation::isFileID
bool isFileID() const
Definition: SourceLocation.h:98
clang::TextDiagnostic::TextDiagnostic
TextDiagnostic(raw_ostream &OS, const LangOptions &LangOpts, DiagnosticOptions *DiagOpts)
Definition: TextDiagnostic.cpp:666
llvm::ArrayRef
Definition: LLVM.h:31
clang::TextDiagnostic::emitBuildingModuleLocation
void emitBuildingModuleLocation(FullSourceLoc Loc, PresumedLoc PLoc, StringRef ModuleName) override
Definition: TextDiagnostic.cpp:923
llvm::SmallString< 16 >
skipWhitespace
static unsigned skipWhitespace(unsigned Idx, StringRef Str, unsigned Length)
Skip over whitespace in the string, starting at the given index.
Definition: TextDiagnostic.cpp:514
clang::TextDiagnostic::~TextDiagnostic
~TextDiagnostic() override
Definition: TextDiagnostic.cpp:671
clang::TextDiagnostic::emitIncludeLocation
void emitIncludeLocation(FullSourceLoc Loc, PresumedLoc PLoc) override
Definition: TextDiagnostic.cpp:906
CharInfo.h
clang::FullSourceLoc::getColumnNumber
unsigned getColumnNumber(bool *Invalid=nullptr) const
Definition: SourceLocation.cpp:197
Filename
StringRef Filename
Definition: Format.cpp:1825
clang::FileID::isValid
bool isValid() const
Definition: SourceLocation.h:44
clang::DiagnosticsEngine::Ignored
Definition: Diagnostic.h:153
clang::PresumedLoc::isValid
bool isValid() const
Definition: SourceLocation.h:316
End
SourceLocation End
Definition: USRLocFinder.cpp:166
clang::CharSourceRange
Represents a character-granular source range.
Definition: SourceLocation.h:250
clang::FullSourceLoc::getFileEntry
const FileEntry * getFileEntry() const
Definition: SourceLocation.cpp:202
clang::PresumedLoc::isInvalid
bool isInvalid() const
Return true if this object is invalid or uninitialized.
Definition: SourceLocation.h:315
clang::FullSourceLoc::getDecomposedLoc
std::pair< FileID, unsigned > getDecomposedLoc() const
Decompose the specified location into a raw FileID + Offset pair.
Definition: SourceLocation.cpp:251
clang::Lexer::MeasureTokenLength
static unsigned MeasureTokenLength(SourceLocation Loc, const SourceManager &SM, const LangOptions &LangOpts)
MeasureTokenLength - Relex the token at the specified location and return its length in bytes in the ...
Definition: Lexer.cpp:444
Line
const AnnotatedLine * Line
Definition: UsingDeclarationsSorter.cpp:68
clang::PresumedLoc::getLine
unsigned getLine() const
Return the presumed line number of this location.
Definition: SourceLocation.h:334
clang::FullSourceLoc::getLineNumber
unsigned getLineNumber(bool *Invalid=nullptr) const
Definition: SourceLocation.cpp:192
findLinesForRange
static llvm::Optional< std::pair< unsigned, unsigned > > findLinesForRange(const CharSourceRange &R, FileID FID, const SourceManager &SM)
Find the suitable set of lines to show to include a set of ranges.
Definition: TextDiagnostic.cpp:935
clang::FullSourceLoc::getManager
const SourceManager & getManager() const
Definition: SourceLocation.h:378
Begin
SourceLocation Begin
Definition: USRLocFinder.cpp:164
Lexer.h
clang::TextDiagnostic::emitDiagnosticLoc
void emitDiagnosticLoc(FullSourceLoc Loc, PresumedLoc PLoc, DiagnosticsEngine::Level Level, ArrayRef< CharSourceRange > Ranges) override
Print out the file/line/column information and include trace.
Definition: TextDiagnostic.cpp:805
clang::format::encoding::columnWidth
unsigned columnWidth(StringRef Text, Encoding Encoding)
Returns the number of columns required to display the Text on a generic Unicode-capable terminal...
Definition: Encoding.h:45
clang::DiagnosticRenderer::DiagOpts
IntrusiveRefCntPtr< DiagnosticOptions > DiagOpts
Definition: DiagnosticRenderer.h:50
clang::PresumedLoc
Represents an unpacked "presumed" location which can be presented to the user.
Definition: SourceLocation.h:299
buildFixItInsertionLine
static std::string buildFixItInsertionLine(FileID FID, unsigned LineNo, const SourceColumnMap &map, ArrayRef< FixItHint > Hints, const SourceManager &SM, const DiagnosticOptions *DiagOpts)
Definition: TextDiagnostic.cpp:1066
clang::SourceManager::getExpansionLineNumber
unsigned getExpansionLineNumber(SourceLocation Loc, bool *Invalid=nullptr) const
Definition: SourceManager.cpp:1377
bytesSincePreviousTabOrLineBegin
static int bytesSincePreviousTabOrLineBegin(StringRef SourceLine, size_t i)
Definition: TextDiagnostic.cpp:68
SM
const SourceManager & SM
Definition: Format.cpp:1685
warningColor
static enum raw_ostream::Colors warningColor
Definition: TextDiagnostic.cpp:34
noteColor
static enum raw_ostream::Colors noteColor
Definition: TextDiagnostic.cpp:26
clang::PresumedLoc::getFilename
const char * getFilename() const
Return the presumed filename of this location.
Definition: SourceLocation.h:321
clang::PresumedLoc::getColumn
unsigned getColumn() const
Return the presumed column number of this location.
Definition: SourceLocation.h:342
clang::SourceLocation
Encodes a location in the source.
Definition: SourceLocation.h:86
clang::FileEntry::getName
StringRef getName() const
Definition: FileManager.h:102
clang::DiagnosticOptions
Options for controlling the compiler diagnostics engine.
Definition: DiagnosticOptions.h:63
highlightRange
static void highlightRange(const CharSourceRange &R, unsigned LineNo, FileID FID, const SourceColumnMap &map, std::string &CaretLine, const SourceManager &SM, const LangOptions &LangOpts)
Highlight a SourceRange (with ~&#39;s) for any characters on LineNo.
Definition: TextDiagnostic.cpp:984
clang::TextDiagnostic::printDiagnosticLevel
static void printDiagnosticLevel(raw_ostream &OS, DiagnosticsEngine::Level Level, bool ShowColors, bool CLFallbackMode=false)
Print the diagonstic level to a raw_ostream.
Definition: TextDiagnostic.cpp:696
clang::FileEntry
Cached information about one file (either on disk or in the virtual file system). ...
Definition: FileManager.h:78
clang::ToggleHighlight
const char ToggleHighlight
Special character that the diagnostic printer will use to toggle the bold attribute.
Definition: Diagnostic.h:1595
clang::TextDiagnostic::printDiagnosticMessage
static void printDiagnosticMessage(raw_ostream &OS, bool IsSupplemental, StringRef Message, unsigned CurrentColumn, unsigned Columns, bool ShowColors)
Pretty-print a diagnostic message to a raw_ostream.
Definition: TextDiagnostic.cpp:737
clang::SourceManager::getLineNumber
unsigned getLineNumber(FileID FID, unsigned FilePos, bool *Invalid=nullptr) const
Given a SourceLocation, return the spelling line number for the position indicated.
Definition: SourceManager.cpp:1277
clang::DiagnosticsEngine::Remark
Definition: Diagnostic.h:155
llvm::SmallVector
Definition: LLVM.h:35
byteToColumn
static void byteToColumn(StringRef SourceLine, unsigned TabStop, SmallVectorImpl< int > &out)
This function takes a raw source line and produces a mapping from the bytes of the printable represen...
Definition: TextDiagnostic.cpp:197
clang::FullSourceLoc::getBufferData
StringRef getBufferData(bool *Invalid=nullptr) const
Return a StringRef to the source buffer data for the specified FileID.
Definition: SourceLocation.cpp:246
WordWrapIndentation
const unsigned WordWrapIndentation
Number of spaces to indent when word-wrapping.
Definition: TextDiagnostic.cpp:66
clang::DiagnosticOptions::MaxTabStop
Definition: DiagnosticOptions.h:70
findMatchingPunctuation
static char findMatchingPunctuation(char c)
If the given character is the start of some kind of balanced punctuation (e.g., quotes or parentheses...
Definition: TextDiagnostic.cpp:526
clang::MultiVersionKind::None
clang::CharSourceRange::isTokenRange
bool isTokenRange() const
Return true if the end of this range specifies the start of the last token.
Definition: SourceLocation.h:277
expandTabs
static void expandTabs(std::string &SourceLine, unsigned TabStop)
Definition: TextDiagnostic.cpp:162
clang::FileID
An opaque identifier used by SourceManager which refers to a source file (MemoryBuffer) along with it...
Definition: SourceLocation.h:38
clang::SourceManager::getExpansionColumnNumber
unsigned getExpansionColumnNumber(SourceLocation Loc, bool *Invalid=nullptr) const
Definition: SourceManager.cpp:1213
clang::FileManager::getCanonicalName
StringRef getCanonicalName(const DirectoryEntry *Dir)
Retrieve the canonical name for a given directory.
Definition: FileManager.cpp:550
clang::FileEntry::isValid
bool isValid() const
Definition: FileManager.h:104
clang::DiagnosticRenderer::LastLoc
SourceLocation LastLoc
The location of the previous diagnostic if known.
Definition: DiagnosticRenderer.h:57
clang
Dataflow Directional Tag Classes.
Definition: CFGReachabilityAnalysis.h:21
clang::SourceLocation::isValid
bool isValid() const
Return true if this is a valid SourceLocation object.
Definition: SourceLocation.h:106
applyTemplateHighlighting
static void applyTemplateHighlighting(raw_ostream &OS, StringRef Str, bool &Normal, bool Bold)
Add highlights to differences in template strings.
Definition: TextDiagnostic.cpp:45
clang::DiagnosticOptions::MSVC
Definition: DiagnosticOptions.h:65
columnToByte
static void columnToByte(StringRef SourceLine, unsigned TabStop, SmallVectorImpl< int > &out)
This function takes a raw source line and produces a mapping from columns to the byte of the source l...
Definition: TextDiagnostic.cpp:231
clang::SourceManager::getPresumedLoc
PresumedLoc getPresumedLoc(SourceLocation Loc, bool UseLineDirectives=true) const
Returns the "presumed" location of a SourceLocation specifies.
Definition: SourceManager.cpp:1443
clang::SourceManager::translateLineCol
SourceLocation translateLineCol(FileID FID, unsigned Line, unsigned Col) const
Get the source location in FID for the given line:col.
Definition: SourceManager.cpp:1628
clang::DiagnosticsEngine::Warning
Definition: Diagnostic.h:156
clang::FileManager::getFile
llvm::ErrorOr< const FileEntry * > getFile(StringRef Filename, bool OpenFile=false, bool CacheFailure=true)
Lookup, cache, and verify the specified file (real or virtual).
Definition: FileManager.cpp:195
clang::SourceManager::getFileID
FileID getFileID(SourceLocation SpellingLoc) const
Return the FileID for a SourceLocation.
Definition: SourceManager.h:1090
clang::DiagnosticsEngine::Error
Definition: Diagnostic.h:157
clang::CharSourceRange::getEnd
SourceLocation getEnd() const
Definition: SourceLocation.h:281
clang::SourceManager::getExpansionRange
CharSourceRange getExpansionRange(SourceLocation Loc) const
Given a SourceLocation object, return the range of tokens covered by the expansion in the ultimate fi...
Definition: SourceManager.cpp:1010
clang::DiagnosticsEngine::Level
Level
The level of the diagnostic, after it has been through mapping.
Definition: Diagnostic.h:152
min
__DEVICE__ int min(int __a, int __b)
Definition: __clang_cuda_device_functions.h:1639
remarkColor
static enum raw_ostream::Colors remarkColor
Definition: TextDiagnostic.cpp:28
clang::FullSourceLoc
A SourceLocation and its associated SourceManager.
Definition: SourceLocation.h:361
DiagnosticOptions.h
clang::LangOptions::MSVC2015
Definition: LangOptions.h:116
clang::TextDiagnostic::emitImportLocation
void emitImportLocation(FullSourceLoc Loc, PresumedLoc PLoc, StringRef ModuleName) override
Definition: TextDiagnostic.cpp:914
clang::prec::Level
Level
Definition: OperatorPrecedence.h:26
savedColor
static enum raw_ostream::Colors savedColor
Definition: TextDiagnostic.cpp:41
clang::DiagnosticOptions::Clang
Definition: DiagnosticOptions.h:65
clang::SourceManager
This class handles loading and caching of source files into memory.
Definition: SourceManager.h:596
clang::SourceManager::getDecomposedLoc
std::pair< FileID, unsigned > getDecomposedLoc(SourceLocation Loc) const
Decompose the specified location into a raw FileID + Offset pair.
Definition: SourceManager.h:1238
clang::DiagnosticsEngine::Fatal
Definition: Diagnostic.h:158