Add CompilerInstance::has* methods for testing if the instance has a particular

subobject.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@87096 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 17 insertions, 3 deletions

diff --git a/include/clang/Frontend/CompilerInstance.h b/include/clang/Frontend/CompilerInstance.h
index 0cc1911c0c..8c638206b6 100644
--- a/include/clang/Frontend/CompilerInstance.h
+++ b/include/clang/Frontend/CompilerInstance.h
@@ -84,7 +84,9 @@ public:
   /// @name LLVM Context
   /// {
 
-  llvm::LLVMContext &getLLVMContext() {
+  bool hasLLVMContext() const { return LLVMContext != 0; }
+
+  llvm::LLVMContext &getLLVMContext() const {
     assert(LLVMContext && "Compiler instance has no LLVM context!");
     return *LLVMContext;
   }
@@ -175,6 +177,8 @@ public:
   /// @name Diagnostics Engine
   /// {
 
+  bool hasDiagnostics() const { return Diagnostics != 0; }
+
   Diagnostic &getDiagnostics() const {
     assert(Diagnostics && "Compiler instance has no diagnostics!");
     return *Diagnostics;
@@ -204,6 +208,8 @@ public:
   /// @name Target Info
   /// {
 
+  bool hasTarget() const { return Target != 0; }
+
   TargetInfo &getTarget() const {
     assert(Target && "Compiler instance has no target!");
     return *Target;
@@ -221,6 +227,8 @@ public:
   /// @name File Manager
   /// {
 
+  bool hasFileManager() const { return FileMgr != 0; }
+
   FileManager &getFileManager() const {
     assert(FileMgr && "Compiler instance has no file manager!");
     return *FileMgr;
@@ -238,6 +246,8 @@ public:
   /// @name Source Manager
   /// {
 
+  bool hasSourceManager() const { return SourceMgr != 0; }
+
   SourceManager &getSourceManager() const {
     assert(SourceMgr && "Compiler instance has no source manager!");
     return *SourceMgr;
@@ -255,6 +265,8 @@ public:
   /// @name Preprocessor
   /// {
 
+  bool hasPreprocessor() const { return PP != 0; }
+
   Preprocessor &getPreprocessor() const {
     assert(PP && "Compiler instance has no preprocessor!");
     return *PP;
@@ -272,6 +284,8 @@ public:
   /// @name ASTContext
   /// {
 
+  bool hasASTContext() const { return Context != 0; }
+
   ASTContext &getASTContext() const {
     assert(Context && "Compiler instance has no AST context!");
     return *Context;
diff --git a/tools/clang-cc/clang-cc.cpp b/tools/clang-cc/clang-cc.cpp
index 0393c7301d..764db6f503 100644
--- a/tools/clang-cc/clang-cc.cpp
+++ b/tools/clang-cc/clang-cc.cpp
@@ -839,7 +839,7 @@ int main(int argc, char **argv) {
   // client to use for any errors during option handling.
   InitializeDiagnosticOptions(Clang.getDiagnosticOpts());
   Clang.createDiagnostics(argc, argv);
-  if (!&Clang.getDiagnostics())
+  if (!Clang.hasDiagnostics())
     return 1;
 
   // Set an error handler, so that any LLVM backend diagnostics go through our
@@ -856,7 +856,7 @@ int main(int argc, char **argv) {
   Clang.setTarget(
     ConstructCompilerInvocation(Clang.getInvocation(), Clang.getDiagnostics(),
                                 argv[0], IsAST));
-  if (!&Clang.getTarget())
+  if (!Clang.hasTarget())
     return 1;
 
   // Validate/process some options