Introduce TextPathDiagnostics, a simple PathDiagnosticClient that outputs as diagnostic notes
the sequence of events; useful for testing.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120770 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Checker/TextPathDiagnostics.cpp b/lib/Checker/TextPathDiagnostics.cpp
new file mode 100644
index 0000000..03c6088
--- /dev/null
+++ b/lib/Checker/TextPathDiagnostics.cpp
@@ -0,0 +1,80 @@
+//===--- TextPathDiagnostics.cpp - Text Diagnostics for Paths ---*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines the TextPathDiagnostics object.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/Checker/PathDiagnosticClients.h"
+#include "clang/Checker/BugReporter/PathDiagnostic.h"
+#include "clang/Lex/Preprocessor.h"
+#include "llvm/Support/raw_ostream.h"
+using namespace clang;
+using namespace llvm;
+
+namespace {
+
+/// \brief Simple path diagnostic client used for outputting as text
+/// the sequence of events.
+class TextPathDiagnostics : public PathDiagnosticClient {
+ const std::string OutputFile;
+ Diagnostic &Diag;
+
+public:
+ TextPathDiagnostics(const std::string& output, Diagnostic &diag)
+ : OutputFile(output), Diag(diag) {}
+
+ void HandlePathDiagnostic(const PathDiagnostic* D);
+
+ void FlushDiagnostics(llvm::SmallVectorImpl<std::string> *FilesMade) { }
+
+ virtual llvm::StringRef getName() const {
+ return "TextPathDiagnostics";
+ }
+
+ PathGenerationScheme getGenerationScheme() const { return Extensive; }
+ bool supportsLogicalOpControlFlow() const { return true; }
+ bool supportsAllBlockEdges() const { return true; }
+ virtual bool useVerboseDescription() const { return true; }
+};
+
+} // end anonymous namespace
+
+PathDiagnosticClient*
+clang::createTextPathDiagnosticClient(const std::string& out,
+ const Preprocessor &PP) {
+ return new TextPathDiagnostics(out, PP.getDiagnostics());
+}
+
+void TextPathDiagnostics::HandlePathDiagnostic(const PathDiagnostic* D) {
+ if (!D)
+ return;
+
+ if (D->empty()) {
+ delete D;
+ return;
+ }
+
+ // Open the file.
+ std::string ErrMsg;
+ llvm::raw_fd_ostream o(OutputFile.c_str(), ErrMsg);
+ if (!ErrMsg.empty()) {
+ llvm::errs() << "warning: could not create file: " << OutputFile << '\n';
+ return;
+ }
+
+ for (PathDiagnostic::const_iterator I=D->begin(), E=D->end(); I != E; ++I) {
+ if (isa<PathDiagnosticEventPiece>(*I)) {
+ PathDiagnosticEventPiece &event = cast<PathDiagnosticEventPiece>(*I);
+ unsigned diagID = Diag.getDiagnosticIDs()->getCustomDiagID(
+ DiagnosticIDs::Note, event.getString());
+ Diag.Report(event.getLocation().asLocation(), diagID);
+ }
+ }
+}