Add a stub frontend action for BoostCon, for next week's workshop.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103258 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/BoostConAction.cpp b/lib/Frontend/BoostConAction.cpp
new file mode 100644
index 0000000..9e4f97d
--- /dev/null
+++ b/lib/Frontend/BoostConAction.cpp
@@ -0,0 +1,29 @@
+//===-- BoostConAction.cpp - BoostCon Workshop Action -----------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+#include "clang/Frontend/FrontendActions.h"
+#include "clang/AST/ASTConsumer.h"
+using namespace clang;
+
+namespace {
+  class BoostConASTConsumer : public ASTConsumer {
+  public:
+    /// HandleTranslationUnit - This method is called when the ASTs for entire
+    /// translation unit have been parsed.
+    virtual void HandleTranslationUnit(ASTContext &Ctx);
+  };
+}
+
+ASTConsumer *BoostConAction::CreateASTConsumer(CompilerInstance &CI,
+                                               llvm::StringRef InFile) {
+  return new BoostConASTConsumer();
+}
+
+void BoostConASTConsumer::HandleTranslationUnit(ASTContext &Ctx) {
+  fprintf(stderr, "Welcome to BoostCon!\n");
+}