[libclang] Add CXDiagnosticImpl to represent a super class for the implementation backing a CXDiagnostic. This allows CXStoredDiagnostic

to be just one possible implementation of a CXDiagnostic.

llvm-svn: 143368

1 files changed, 118 insertions, 0 deletions

diff --git a/clang/tools/libclang/CXStoredDiagnostic.cpp b/clang/tools/libclang/CXStoredDiagnostic.cpp
new file mode 100644
index 00000000000..117e5398be4
--- /dev/null
+++ b/clang/tools/libclang/CXStoredDiagnostic.cpp
@@ -0,0 +1,118 @@
+/*===-- CXStoreDiagnostic.cpp - Diagnostics C Interface ----------*- C++ -*-===*\
+|*                                                                            *|
+|*                     The LLVM Compiler Infrastructure                       *|
+|*                                                                            *|
+|* This file is distributed under the University of Illinois Open Source      *|
+|* License. See LICENSE.TXT for details.                                      *|
+|*                                                                            *|
+|*===----------------------------------------------------------------------===*|
+|*                                                                            *|
+|* Implements part of the diagnostic functions of the Clang C interface.      *|
+|*                                                                            *|
+\*===----------------------------------------------------------------------===*/
+
+#include "CIndexDiagnostic.h"
+#include "CIndexer.h"
+#include "CXTranslationUnit.h"
+#include "CXSourceLocation.h"
+#include "CXString.h"
+
+#include "clang/Frontend/ASTUnit.h"
+#include "clang/Frontend/FrontendDiagnostic.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/Twine.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/raw_ostream.h"
+
+using namespace clang;
+using namespace clang::cxloc;
+using namespace clang::cxstring;
+
+// Needed for vtable of CXPersisetntDiagnostic.
+CXDiagnosticImpl::~CXDiagnosticImpl() {}
+
+CXDiagnosticSeverity CXStoredDiagnostic::getSeverity() const {
+  switch (Diag.getLevel()) {
+    case DiagnosticsEngine::Ignored: return CXDiagnostic_Ignored;
+    case DiagnosticsEngine::Note:    return CXDiagnostic_Note;
+    case DiagnosticsEngine::Warning: return CXDiagnostic_Warning;
+    case DiagnosticsEngine::Error:   return CXDiagnostic_Error;
+    case DiagnosticsEngine::Fatal:   return CXDiagnostic_Fatal;
+  }
+  
+  llvm_unreachable("Invalid diagnostic level");
+  return CXDiagnostic_Ignored;
+}
+
+CXSourceLocation CXStoredDiagnostic::getLocation() const {
+  if (Diag.getLocation().isInvalid())
+    return clang_getNullLocation();
+  
+  return translateSourceLocation(Diag.getLocation().getManager(),
+                                 LangOpts, Diag.getLocation());
+}
+
+CXString CXStoredDiagnostic::getSpelling() const {
+  return createCXString(Diag.getMessage(), false);
+}
+
+CXString CXStoredDiagnostic::getDiagnosticOption(CXString *Disable) const {
+  unsigned ID = Diag.getID();
+  StringRef Option = DiagnosticIDs::getWarningOptionForDiag(ID);
+  if (!Option.empty()) {
+    if (Disable)
+      *Disable = createCXString((Twine("-Wno-") + Option).str());
+    return createCXString((Twine("-W") + Option).str());
+  }
+  
+  if (ID == diag::fatal_too_many_errors) {
+    if (Disable)
+      *Disable = createCXString("-ferror-limit=0");
+    return createCXString("-ferror-limit=");
+  }
+  
+  bool EnabledByDefault;
+  if (DiagnosticIDs::isBuiltinExtensionDiag(ID, EnabledByDefault) &&
+      !EnabledByDefault)
+    return createCXString("-pedantic");
+
+  return createCXString("");  
+}
+
+unsigned CXStoredDiagnostic::getCategory() const {
+  return DiagnosticIDs::getCategoryNumberForDiag(Diag.getID());
+}
+
+unsigned CXStoredDiagnostic::getNumRanges() const {
+  if (Diag.getLocation().isInvalid())
+    return 0;
+  
+  return Diag.range_size();
+}
+
+CXSourceRange CXStoredDiagnostic::getRange(unsigned int Range) const {
+  assert(Diag.getLocation().isValid());
+  return translateSourceRange(Diag.getLocation().getManager(),
+                              LangOpts,
+                              Diag.range_begin()[Range]);
+}
+
+unsigned CXStoredDiagnostic::getNumFixIts() const {
+  if (Diag.getLocation().isInvalid())
+    return 0;    
+  return Diag.fixit_size();
+}
+
+CXString CXStoredDiagnostic::getFixIt(unsigned FixIt,
+                                      CXSourceRange *ReplacementRange) const {  
+  const FixItHint &Hint = Diag.fixit_begin()[FixIt];
+  if (ReplacementRange) {
+    // Create a range that covers the entire replacement (or
+    // removal) range, adjusting the end of the range to point to
+    // the end of the token.
+    *ReplacementRange = translateSourceRange(Diag.getLocation().getManager(),
+                                             LangOpts, Hint.RemoveRange);
+  }
+  return createCXString(Hint.CodeToInsert);
+}
+