lib/Checker/TextPathDiagnostics.cpp

   1 //===--- TextPathDiagnostics.cpp - Text 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 TextPathDiagnostics object.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "clang/Checker/PathDiagnosticClients.h"
  15 #include "clang/Checker/BugReporter/PathDiagnostic.h"
  16 #include "clang/Lex/Preprocessor.h"
  17 #include "llvm/Support/raw_ostream.h"
  18 using namespace clang;
  19 using namespace llvm;
  20
  21 namespace {
  22
  23 /// \brief Simple path diagnostic client used for outputting as diagnostic notes
  24 /// the sequence of events.
  25 class TextPathDiagnostics : public PathDiagnosticClient {
  26   const std::string OutputFile;
  27   Diagnostic &Diag;
  28
  29 public:
  30   TextPathDiagnostics(const std::string& output, Diagnostic &diag)
  31     : OutputFile(output), Diag(diag) {}
  32
  33   void HandlePathDiagnostic(const PathDiagnostic* D);
  34
  35   void FlushDiagnostics(llvm::SmallVectorImpl<std::string> *FilesMade) { }
  36
  37   virtual llvm::StringRef getName() const {
  38     return "TextPathDiagnostics";
  39   }
  40
  41   PathGenerationScheme getGenerationScheme() const { return Minimal; }
  42   bool supportsLogicalOpControlFlow() const { return true; }
  43   bool supportsAllBlockEdges() const { return true; }
  44   virtual bool useVerboseDescription() const { return true; }
  45 };
  46
  47 } // end anonymous namespace
  48
  49 PathDiagnosticClient*
  50 clang::createTextPathDiagnosticClient(const std::string& out,
  51                                       const Preprocessor &PP) {
  52   return new TextPathDiagnostics(out, PP.getDiagnostics());
  53 }
  54
  55 void TextPathDiagnostics::HandlePathDiagnostic(const PathDiagnostic* D) {
  56   if (!D)
  57     return;
  58
  59   if (D->empty()) {
  60     delete D;
  61     return;
  62   }
  63
  64   for (PathDiagnostic::const_iterator I=D->begin(), E=D->end(); I != E; ++I) {
  65     unsigned diagID = Diag.getDiagnosticIDs()->getCustomDiagID(
  66                                            DiagnosticIDs::Note, I->getString());
  67     Diag.Report(I->getLocation().asLocation(), diagID);
  68   }
  69 }