PlistDiagnostics.cpp revision bac341346f3c8e713a8f165120fd54b500ee3189 
1//===--- PlistDiagnostics.cpp - Plist Diagnostics for Paths -----*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10//  This file defines the PlistDiagnostics object.
11//
12//===----------------------------------------------------------------------===//
13
14#include "clang/StaticAnalyzer/Core/PathDiagnosticConsumers.h"
15#include "clang/StaticAnalyzer/Core/BugReporter/PathDiagnostic.h"
16#include "clang/Basic/SourceManager.h"
17#include "clang/Basic/FileManager.h"
18#include "clang/Lex/Preprocessor.h"
19#include "llvm/Support/raw_ostream.h"
20#include "llvm/Support/Casting.h"
21#include "llvm/ADT/DenseMap.h"
22#include "llvm/ADT/SmallVector.h"
23using namespace clang;
24using namespace ento;
25
26typedef llvm::DenseMap<FileID, unsigned> FIDMap;
27
28
29namespace {
30  class PlistDiagnostics : public PathDiagnosticConsumer {
31    const std::string OutputFile;
32    const LangOptions &LangOpts;
33    llvm::OwningPtr<PathDiagnosticConsumer> SubPD;
34    bool flushed;
35  public:
36    PlistDiagnostics(const std::string& prefix, const LangOptions &LangOpts,
37                     PathDiagnosticConsumer *subPD);
38
39    virtual ~PlistDiagnostics() {}
40
41    void FlushDiagnosticsImpl(std::vector<const PathDiagnostic *> &Diags,
42                              SmallVectorImpl<std::string> *FilesMade);
43
44    virtual StringRef getName() const {
45      return "PlistDiagnostics";
46    }
47
48    PathGenerationScheme getGenerationScheme() const;
49    bool supportsLogicalOpControlFlow() const { return true; }
50    bool supportsAllBlockEdges() const { return true; }
51    virtual bool useVerboseDescription() const { return false; }
52  };
53} // end anonymous namespace
54
55PlistDiagnostics::PlistDiagnostics(const std::string& output,
56                                   const LangOptions &LO,
57                                   PathDiagnosticConsumer *subPD)
58  : OutputFile(output), LangOpts(LO), SubPD(subPD), flushed(false) {}
59
60PathDiagnosticConsumer*
61ento::createPlistDiagnosticConsumer(const std::string& s, const Preprocessor &PP,
62                                  PathDiagnosticConsumer *subPD) {
63  return new PlistDiagnostics(s, PP.getLangOptions(), subPD);
64}
65
66PathDiagnosticConsumer::PathGenerationScheme
67PlistDiagnostics::getGenerationScheme() const {
68  if (const PathDiagnosticConsumer *PD = SubPD.get())
69    return PD->getGenerationScheme();
70
71  return Extensive;
72}
73
74static void AddFID(FIDMap &FIDs, SmallVectorImpl<FileID> &V,
75                   const SourceManager* SM, SourceLocation L) {
76
77  FileID FID = SM->getFileID(SM->getExpansionLoc(L));
78  FIDMap::iterator I = FIDs.find(FID);
79  if (I != FIDs.end()) return;
80  FIDs[FID] = V.size();
81  V.push_back(FID);
82}
83
84static unsigned GetFID(const FIDMap& FIDs, const SourceManager &SM,
85                       SourceLocation L) {
86  FileID FID = SM.getFileID(SM.getExpansionLoc(L));
87  FIDMap::const_iterator I = FIDs.find(FID);
88  assert(I != FIDs.end());
89  return I->second;
90}
91
92static raw_ostream &Indent(raw_ostream &o, const unsigned indent) {
93  for (unsigned i = 0; i < indent; ++i) o << ' ';
94  return o;
95}
96
97static void EmitLocation(raw_ostream &o, const SourceManager &SM,
98                         const LangOptions &LangOpts,
99                         SourceLocation L, const FIDMap &FM,
100                         unsigned indent, bool extend = false) {
101
102  FullSourceLoc Loc(SM.getExpansionLoc(L), const_cast<SourceManager&>(SM));
103
104  // Add in the length of the token, so that we cover multi-char tokens.
105  unsigned offset =
106    extend ? Lexer::MeasureTokenLength(Loc, SM, LangOpts) - 1 : 0;
107
108  Indent(o, indent) << "<dict>\n";
109  Indent(o, indent) << " <key>line</key><integer>"
110                    << Loc.getExpansionLineNumber() << "</integer>\n";
111  Indent(o, indent) << " <key>col</key><integer>"
112                    << Loc.getExpansionColumnNumber() + offset << "</integer>\n";
113  Indent(o, indent) << " <key>file</key><integer>"
114                    << GetFID(FM, SM, Loc) << "</integer>\n";
115  Indent(o, indent) << "</dict>\n";
116}
117
118static void EmitLocation(raw_ostream &o, const SourceManager &SM,
119                         const LangOptions &LangOpts,
120                         const PathDiagnosticLocation &L, const FIDMap& FM,
121                         unsigned indent, bool extend = false) {
122  EmitLocation(o, SM, LangOpts, L.asLocation(), FM, indent, extend);
123}
124
125static void EmitRange(raw_ostream &o, const SourceManager &SM,
126                      const LangOptions &LangOpts,
127                      PathDiagnosticRange R, const FIDMap &FM,
128                      unsigned indent) {
129  Indent(o, indent) << "<array>\n";
130  EmitLocation(o, SM, LangOpts, R.getBegin(), FM, indent+1);
131  EmitLocation(o, SM, LangOpts, R.getEnd(), FM, indent+1, !R.isPoint);
132  Indent(o, indent) << "</array>\n";
133}
134
135static raw_ostream &EmitString(raw_ostream &o,
136                                     const std::string& s) {
137  o << "<string>";
138  for (std::string::const_iterator I=s.begin(), E=s.end(); I!=E; ++I) {
139    char c = *I;
140    switch (c) {
141    default:   o << c; break;
142    case '&':  o << "&amp;"; break;
143    case '<':  o << "&lt;"; break;
144    case '>':  o << "&gt;"; break;
145    case '\'': o << "&apos;"; break;
146    case '\"': o << "&quot;"; break;
147    }
148  }
149  o << "</string>";
150  return o;
151}
152
153static void ReportControlFlow(raw_ostream &o,
154                              const PathDiagnosticControlFlowPiece& P,
155                              const FIDMap& FM,
156                              const SourceManager &SM,
157                              const LangOptions &LangOpts,
158                              unsigned indent) {
159
160  Indent(o, indent) << "<dict>\n";
161  ++indent;
162
163  Indent(o, indent) << "<key>kind</key><string>control</string>\n";
164
165  // Emit edges.
166  Indent(o, indent) << "<key>edges</key>\n";
167  ++indent;
168  Indent(o, indent) << "<array>\n";
169  ++indent;
170  for (PathDiagnosticControlFlowPiece::const_iterator I=P.begin(), E=P.end();
171       I!=E; ++I) {
172    Indent(o, indent) << "<dict>\n";
173    ++indent;
174    Indent(o, indent) << "<key>start</key>\n";
175    EmitRange(o, SM, LangOpts, I->getStart().asRange(), FM, indent+1);
176    Indent(o, indent) << "<key>end</key>\n";
177    EmitRange(o, SM, LangOpts, I->getEnd().asRange(), FM, indent+1);
178    --indent;
179    Indent(o, indent) << "</dict>\n";
180  }
181  --indent;
182  Indent(o, indent) << "</array>\n";
183  --indent;
184
185  // Output any helper text.
186  const std::string& s = P.getString();
187  if (!s.empty()) {
188    Indent(o, indent) << "<key>alternate</key>";
189    EmitString(o, s) << '\n';
190  }
191
192  --indent;
193  Indent(o, indent) << "</dict>\n";
194}
195
196static void ReportEvent(raw_ostream &o, const PathDiagnosticPiece& P,
197                        const FIDMap& FM,
198                        const SourceManager &SM,
199                        const LangOptions &LangOpts,
200                        unsigned indent) {
201
202  Indent(o, indent) << "<dict>\n";
203  ++indent;
204
205  Indent(o, indent) << "<key>kind</key><string>event</string>\n";
206
207  // Output the location.
208  FullSourceLoc L = P.getLocation().asLocation();
209
210  Indent(o, indent) << "<key>location</key>\n";
211  EmitLocation(o, SM, LangOpts, L, FM, indent);
212
213  // Output the ranges (if any).
214  PathDiagnosticPiece::range_iterator RI = P.ranges_begin(),
215  RE = P.ranges_end();
216
217  if (RI != RE) {
218    Indent(o, indent) << "<key>ranges</key>\n";
219    Indent(o, indent) << "<array>\n";
220    ++indent;
221    for (; RI != RE; ++RI)
222      EmitRange(o, SM, LangOpts, *RI, FM, indent+1);
223    --indent;
224    Indent(o, indent) << "</array>\n";
225  }
226
227  // Output the text.
228  assert(!P.getString().empty());
229  Indent(o, indent) << "<key>extended_message</key>\n";
230  Indent(o, indent);
231  EmitString(o, P.getString()) << '\n';
232
233  // Output the short text.
234  // FIXME: Really use a short string.
235  Indent(o, indent) << "<key>message</key>\n";
236  EmitString(o, P.getString()) << '\n';
237
238  // Finish up.
239  --indent;
240  Indent(o, indent); o << "</dict>\n";
241}
242
243static void ReportMacro(raw_ostream &o,
244                        const PathDiagnosticMacroPiece& P,
245                        const FIDMap& FM, const SourceManager &SM,
246                        const LangOptions &LangOpts,
247                        unsigned indent) {
248
249  for (PathDiagnosticMacroPiece::const_iterator I=P.begin(), E=P.end();
250       I!=E; ++I) {
251
252    switch ((*I)->getKind()) {
253    default:
254      break;
255    case PathDiagnosticPiece::Event:
256      ReportEvent(o, cast<PathDiagnosticEventPiece>(**I), FM, SM, LangOpts,
257                  indent);
258      break;
259    case PathDiagnosticPiece::Macro:
260      ReportMacro(o, cast<PathDiagnosticMacroPiece>(**I), FM, SM, LangOpts,
261                  indent);
262      break;
263    }
264  }
265}
266
267static void ReportDiag(raw_ostream &o, const PathDiagnosticPiece& P,
268                       const FIDMap& FM, const SourceManager &SM,
269                       const LangOptions &LangOpts) {
270
271  unsigned indent = 4;
272
273  switch (P.getKind()) {
274  case PathDiagnosticPiece::ControlFlow:
275    ReportControlFlow(o, cast<PathDiagnosticControlFlowPiece>(P), FM, SM,
276                      LangOpts, indent);
277    break;
278  case PathDiagnosticPiece::Event:
279    ReportEvent(o, cast<PathDiagnosticEventPiece>(P), FM, SM, LangOpts,
280                indent);
281    break;
282  case PathDiagnosticPiece::Macro:
283    ReportMacro(o, cast<PathDiagnosticMacroPiece>(P), FM, SM, LangOpts,
284                indent);
285    break;
286  }
287}
288
289void PlistDiagnostics::FlushDiagnosticsImpl(
290                                    std::vector<const PathDiagnostic *> &Diags,
291                                    SmallVectorImpl<std::string> *FilesMade) {
292  // Build up a set of FIDs that we use by scanning the locations and
293  // ranges of the diagnostics.
294  FIDMap FM;
295  SmallVector<FileID, 10> Fids;
296  const SourceManager* SM = 0;
297
298  if (!Diags.empty())
299    SM = &(*Diags.begin())->begin()->getLocation().getManager();
300
301  for (std::vector<const PathDiagnostic*>::iterator DI = Diags.begin(),
302       DE = Diags.end(); DI != DE; ++DI) {
303
304    const PathDiagnostic *D = *DI;
305
306    for (PathDiagnostic::const_iterator I=D->begin(), E=D->end(); I!=E; ++I) {
307      AddFID(FM, Fids, SM, I->getLocation().asLocation());
308
309      for (PathDiagnosticPiece::range_iterator RI=I->ranges_begin(),
310           RE=I->ranges_end(); RI!=RE; ++RI) {
311        AddFID(FM, Fids, SM, RI->getBegin());
312        AddFID(FM, Fids, SM, RI->getEnd());
313      }
314    }
315  }
316
317  // Open the file.
318  std::string ErrMsg;
319  llvm::raw_fd_ostream o(OutputFile.c_str(), ErrMsg);
320  if (!ErrMsg.empty()) {
321    llvm::errs() << "warning: could not create file: " << OutputFile << '\n';
322    return;
323  }
324
325  // Write the plist header.
326  o << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
327  "<!DOCTYPE plist PUBLIC \"-//Apple Computer//DTD PLIST 1.0//EN\" "
328  "\"http://www.apple.com/DTDs/PropertyList-1.0.dtd\">\n"
329  "<plist version=\"1.0\">\n";
330
331  // Write the root object: a <dict> containing...
332  //  - "files", an <array> mapping from FIDs to file names
333  //  - "diagnostics", an <array> containing the path diagnostics
334  o << "<dict>\n"
335       " <key>files</key>\n"
336       " <array>\n";
337
338  for (SmallVectorImpl<FileID>::iterator I=Fids.begin(), E=Fids.end();
339       I!=E; ++I) {
340    o << "  ";
341    EmitString(o, SM->getFileEntryForID(*I)->getName()) << '\n';
342  }
343
344  o << " </array>\n"
345       " <key>diagnostics</key>\n"
346       " <array>\n";
347
348  for (std::vector<const PathDiagnostic*>::iterator DI=Diags.begin(),
349       DE = Diags.end(); DI!=DE; ++DI) {
350
351    o << "  <dict>\n"
352         "   <key>path</key>\n";
353
354    const PathDiagnostic *D = *DI;
355
356    o << "   <array>\n";
357
358    for (PathDiagnostic::const_iterator I=D->begin(), E=D->end(); I != E; ++I)
359      ReportDiag(o, *I, FM, *SM, LangOpts);
360
361    o << "   </array>\n";
362
363    // Output the bug type and bug category.
364    o << "   <key>description</key>";
365    EmitString(o, D->getDescription()) << '\n';
366    o << "   <key>category</key>";
367    EmitString(o, D->getCategory()) << '\n';
368    o << "   <key>type</key>";
369    EmitString(o, D->getBugType()) << '\n';
370
371    // Output the location of the bug.
372    o << "  <key>location</key>\n";
373    EmitLocation(o, *SM, LangOpts, D->getLocation(), FM, 2);
374
375    // Output the diagnostic to the sub-diagnostic client, if any.
376    if (SubPD) {
377      std::vector<const PathDiagnostic *> SubDiags;
378      SubDiags.push_back(D);
379      SmallVector<std::string, 1> SubFilesMade;
380      SubPD->FlushDiagnosticsImpl(SubDiags, &SubFilesMade);
381
382      if (!SubFilesMade.empty()) {
383        o << "  <key>" << SubPD->getName() << "_files</key>\n";
384        o << "  <array>\n";
385        for (size_t i = 0, n = SubFilesMade.size(); i < n ; ++i)
386          o << "   <string>" << SubFilesMade[i] << "</string>\n";
387        o << "  </array>\n";
388      }
389    }
390
391    // Close up the entry.
392    o << "  </dict>\n";
393  }
394
395  o << " </array>\n";
396
397  // Finish.
398  o << "</dict>\n</plist>";
399
400  if (FilesMade)
401    FilesMade->push_back(OutputFile);
402}
403