Add libclang hook 'clang_toggleCrashRecovery()', which provides a mechanism for a client to enable/disable CrashRecovery within libclang function calls.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127920 91177308-0d34-0410-b5e6-96231b3b80d8

include/clang-c/Index.h

@@ -2871,6 +2871,15 @@ CXDiagnostic clang_codeCompleteGetDiagnostic(CXCodeCompleteResults *Results,
  */
 CINDEX_LINKAGE CXString clang_getClangVersion();
 
+  
+/**
+ * \brief Enable/disable crash recovery.
+ *
+ * \param Flag to indicate if crash recovery is enabled.  A non-zero value
+ *        enables crash recovery, while 0 disables it.
+ */
+CINDEX_LINKAGE void clang_toggleCrashRecovery(unsigned isEnabled);
+  
  /**
   * \brief Visitor invoked for each file in a translation unit
   *        (used with clang_getInclusions()).

tools/libclang/CIndex.cpp

@@ -2309,6 +2309,13 @@ void clang_disposeIndex(CXIndex CIdx) {
     delete static_cast<CIndexer *>(CIdx);
 }
 
+void clang_toggleCrashRecovery(unsigned isEnabled) {
+  if (isEnabled)
+    llvm::CrashRecoveryContext::Enable();
+  else
+    llvm::CrashRecoveryContext::Disable();
+}
+  
 CXTranslationUnit clang_createTranslationUnit(CXIndex CIdx,
                                               const char *ast_filename) {
   if (!CIdx)

tools/libclang/libclang.darwin.exports

@@ -108,8 +108,8 @@ _clang_getTranslationUnitSpelling
 _clang_getTypeDeclaration
 _clang_getTypeKindSpelling
 _clang_hashCursor
-_clang_isCursorDefinition
 _clang_isConstQualifiedType
+_clang_isCursorDefinition
 _clang_isDeclaration
 _clang_isExpression
 _clang_isInvalid
@@ -126,6 +126,7 @@ _clang_parseTranslationUnit
 _clang_reparseTranslationUnit
 _clang_saveTranslationUnit
 _clang_sortCodeCompletionResults
+_clang_toggleCrashRecovery
 _clang_tokenize
 _clang_visitChildren
 _clang_visitChildrenWithBlock

tools/libclang/libclang.exports

@@ -126,6 +126,7 @@ clang_parseTranslationUnit
 clang_reparseTranslationUnit
 clang_saveTranslationUnit
 clang_sortCodeCompletionResults
+clang_toggleCrashRecovery
 clang_tokenize
 clang_visitChildren
 clang_visitChildrenWithBlock