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      1 //===--- PlistReporter.cpp - ARC Migrate Tool Plist Reporter ----*- 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 #include "Internals.h"
     11 #include "clang/Lex/Lexer.h"
     12 #include "clang/Basic/SourceManager.h"
     13 #include "clang/Basic/FileManager.h"
     14 
     15 using namespace clang;
     16 using namespace arcmt;
     17 using llvm::StringRef;
     18 
     19 // FIXME: This duplicates significant functionality from PlistDiagnostics.cpp,
     20 // it would be jolly good if there was a reusable PlistWriter or something.
     21 
     22 typedef llvm::DenseMap<FileID, unsigned> FIDMap;
     23 
     24 static void AddFID(FIDMap &FIDs, llvm::SmallVectorImpl<FileID> &V,
     25                    const SourceManager &SM, SourceLocation L) {
     26 
     27   FileID FID = SM.getFileID(SM.getInstantiationLoc(L));
     28   FIDMap::iterator I = FIDs.find(FID);
     29   if (I != FIDs.end()) return;
     30   FIDs[FID] = V.size();
     31   V.push_back(FID);
     32 }
     33 
     34 static unsigned GetFID(const FIDMap& FIDs, const SourceManager &SM,
     35                        SourceLocation L) {
     36   FileID FID = SM.getFileID(SM.getInstantiationLoc(L));
     37   FIDMap::const_iterator I = FIDs.find(FID);
     38   assert(I != FIDs.end());
     39   return I->second;
     40 }
     41 
     42 static llvm::raw_ostream& Indent(llvm::raw_ostream& o, const unsigned indent) {
     43   for (unsigned i = 0; i < indent; ++i) o << ' ';
     44   return o;
     45 }
     46 
     47 static void EmitLocation(llvm::raw_ostream& o, const SourceManager &SM,
     48                          const LangOptions &LangOpts,
     49                          SourceLocation L, const FIDMap &FM,
     50                          unsigned indent, bool extend = false) {
     51 
     52   FullSourceLoc Loc(SM.getInstantiationLoc(L), const_cast<SourceManager&>(SM));
     53 
     54   // Add in the length of the token, so that we cover multi-char tokens.
     55   unsigned offset =
     56     extend ? Lexer::MeasureTokenLength(Loc, SM, LangOpts) - 1 : 0;
     57 
     58   Indent(o, indent) << "<dict>\n";
     59   Indent(o, indent) << " <key>line</key><integer>"
     60                     << Loc.getInstantiationLineNumber() << "</integer>\n";
     61   Indent(o, indent) << " <key>col</key><integer>"
     62                     << Loc.getInstantiationColumnNumber() + offset << "</integer>\n";
     63   Indent(o, indent) << " <key>file</key><integer>"
     64                     << GetFID(FM, SM, Loc) << "</integer>\n";
     65   Indent(o, indent) << "</dict>\n";
     66 }
     67 
     68 static void EmitRange(llvm::raw_ostream& o, const SourceManager &SM,
     69                       const LangOptions &LangOpts,
     70                       CharSourceRange R, const FIDMap &FM,
     71                       unsigned indent) {
     72   Indent(o, indent) << "<array>\n";
     73   EmitLocation(o, SM, LangOpts, R.getBegin(), FM, indent+1);
     74   EmitLocation(o, SM, LangOpts, R.getEnd(), FM, indent+1, R.isTokenRange());
     75   Indent(o, indent) << "</array>\n";
     76 }
     77 
     78 static llvm::raw_ostream& EmitString(llvm::raw_ostream& o,
     79                                      StringRef s) {
     80   o << "<string>";
     81   for (StringRef::const_iterator I=s.begin(), E=s.end(); I!=E; ++I) {
     82     char c = *I;
     83     switch (c) {
     84     default:   o << c; break;
     85     case '&':  o << "&amp;"; break;
     86     case '<':  o << "&lt;"; break;
     87     case '>':  o << "&gt;"; break;
     88     case '\'': o << "&apos;"; break;
     89     case '\"': o << "&quot;"; break;
     90     }
     91   }
     92   o << "</string>";
     93   return o;
     94 }
     95 
     96 void arcmt::writeARCDiagsToPlist(const std::string &outPath,
     97                                  llvm::ArrayRef<StoredDiagnostic> diags,
     98                                  SourceManager &SM,
     99                                  const LangOptions &LangOpts) {
    100   DiagnosticIDs DiagIDs;
    101 
    102   // Build up a set of FIDs that we use by scanning the locations and
    103   // ranges of the diagnostics.
    104   FIDMap FM;
    105   llvm::SmallVector<FileID, 10> Fids;
    106 
    107   for (llvm::ArrayRef<StoredDiagnostic>::iterator
    108          I = diags.begin(), E = diags.end(); I != E; ++I) {
    109     const StoredDiagnostic &D = *I;
    110 
    111     AddFID(FM, Fids, SM, D.getLocation());
    112 
    113     for (StoredDiagnostic::range_iterator
    114            RI = D.range_begin(), RE = D.range_end(); RI != RE; ++RI) {
    115       AddFID(FM, Fids, SM, RI->getBegin());
    116       AddFID(FM, Fids, SM, RI->getEnd());
    117     }
    118   }
    119 
    120   std::string errMsg;
    121   llvm::raw_fd_ostream o(outPath.c_str(), errMsg);
    122   if (!errMsg.empty()) {
    123     llvm::errs() << "error: could not create file: " << outPath << '\n';
    124     return;
    125   }
    126 
    127   // Write the plist header.
    128   o << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
    129   "<!DOCTYPE plist PUBLIC \"-//Apple Computer//DTD PLIST 1.0//EN\" "
    130   "\"http://www.apple.com/DTDs/PropertyList-1.0.dtd\">\n"
    131   "<plist version=\"1.0\">\n";
    132 
    133   // Write the root object: a <dict> containing...
    134   //  - "files", an <array> mapping from FIDs to file names
    135   //  - "diagnostics", an <array> containing the diagnostics
    136   o << "<dict>\n"
    137        " <key>files</key>\n"
    138        " <array>\n";
    139 
    140   for (llvm::SmallVectorImpl<FileID>::iterator I=Fids.begin(), E=Fids.end();
    141        I!=E; ++I) {
    142     o << "  ";
    143     EmitString(o, SM.getFileEntryForID(*I)->getName()) << '\n';
    144   }
    145 
    146   o << " </array>\n"
    147        " <key>diagnostics</key>\n"
    148        " <array>\n";
    149 
    150   for (llvm::ArrayRef<StoredDiagnostic>::iterator
    151          DI = diags.begin(), DE = diags.end(); DI != DE; ++DI) {
    152 
    153     const StoredDiagnostic &D = *DI;
    154 
    155     if (D.getLevel() == Diagnostic::Ignored)
    156       continue;
    157 
    158     o << "  <dict>\n";
    159 
    160     // Output the diagnostic.
    161     o << "   <key>description</key>";
    162     EmitString(o, D.getMessage()) << '\n';
    163     o << "   <key>category</key>";
    164     EmitString(o, DiagIDs.getCategoryNameFromID(
    165                           DiagIDs.getCategoryNumberForDiag(D.getID()))) << '\n';
    166     o << "   <key>type</key>";
    167     if (D.getLevel() >= Diagnostic::Error)
    168       EmitString(o, "error") << '\n';
    169     else if (D.getLevel() == Diagnostic::Warning)
    170       EmitString(o, "warning") << '\n';
    171     else
    172       EmitString(o, "note") << '\n';
    173 
    174     // Output the location of the bug.
    175     o << "  <key>location</key>\n";
    176     EmitLocation(o, SM, LangOpts, D.getLocation(), FM, 2);
    177 
    178     // Output the ranges (if any).
    179     StoredDiagnostic::range_iterator RI = D.range_begin(), RE = D.range_end();
    180 
    181     if (RI != RE) {
    182       o << "   <key>ranges</key>\n";
    183       o << "   <array>\n";
    184       for (; RI != RE; ++RI)
    185         EmitRange(o, SM, LangOpts, *RI, FM, 4);
    186       o << "   </array>\n";
    187     }
    188 
    189     // Close up the entry.
    190     o << "  </dict>\n";
    191   }
    192 
    193   o << " </array>\n";
    194 
    195   // Finish.
    196   o << "</dict>\n</plist>";
    197 }
    198