From d3d981627c375b187f33cc92a034a77ac329ec47 Mon Sep 17 00:00:00 2001
From: Argyrios Kyrtzidis <akyrtzi@gmail.com>
Date: Wed, 3 Oct 2012 01:58:37 +0000
Subject: [PATCH] Introduce ASTConsumer::HandleImplicitImportDecl() callback
 that is invoked when an ImportDecl that was implicitly created due to an
 inclusion directive.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@165084 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/clang/AST/ASTConsumer.h   | 6 ++++++
 lib/AST/ASTConsumer.cpp           | 5 +++++
 lib/Frontend/CompilerInstance.cpp | 9 ++++++---
 3 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/include/clang/AST/ASTConsumer.h b/include/clang/AST/ASTConsumer.h
index 69a3866969..8418b5a45a 100644
--- a/include/clang/AST/ASTConsumer.h
+++ b/include/clang/AST/ASTConsumer.h
@@ -25,6 +25,7 @@ namespace clang {
   class TagDecl;
   class VarDecl;
   class FunctionDecl;
+  class ImportDecl;
 
 /// ASTConsumer - This is an abstract interface that should be implemented by
 /// clients that read ASTs.  This abstraction layer allows the client to be
@@ -79,6 +80,11 @@ public:
   /// The default implementation ignored them.
   virtual void HandleTopLevelDeclInObjCContainer(DeclGroupRef D);
 
+  /// \brief Handle an ImportDecl that was implicitly created due to an
+  /// inclusion directive.
+  /// The default implementation passes it to HandleTopLevelDecl.
+  virtual void HandleImplicitImportDecl(ImportDecl *D);
+
   /// CompleteTentativeDefinition - Callback invoked at the end of a translation
   /// unit to notify the consumer that the given tentative definition should be
   /// completed.
diff --git a/lib/AST/ASTConsumer.cpp b/lib/AST/ASTConsumer.cpp
index 1672bc8aed..a4e17c03e4 100644
--- a/lib/AST/ASTConsumer.cpp
+++ b/lib/AST/ASTConsumer.cpp
@@ -13,6 +13,7 @@
 
 #include "clang/AST/ASTConsumer.h"
 #include "clang/AST/DeclGroup.h"
+#include "clang/AST/Decl.h"
 using namespace clang;
 
 bool ASTConsumer::HandleTopLevelDecl(DeclGroupRef D) {
@@ -24,3 +25,7 @@ void ASTConsumer::HandleInterestingDecl(DeclGroupRef D) {
 }
 
 void ASTConsumer::HandleTopLevelDeclInObjCContainer(DeclGroupRef D) {}
+
+void ASTConsumer::HandleImplicitImportDecl(ImportDecl *D) {
+  HandleTopLevelDecl(DeclGroupRef(D));
+}
diff --git a/lib/Frontend/CompilerInstance.cpp b/lib/Frontend/CompilerInstance.cpp
index 4cc46b8ab7..bf46e549b5 100644
--- a/lib/Frontend/CompilerInstance.cpp
+++ b/lib/Frontend/CompilerInstance.cpp
@@ -1082,9 +1082,12 @@ Module *CompilerInstance::loadModule(SourceLocation ImportLoc,
   // implicit import declaration to capture it in the AST.
   if (IsInclusionDirective && hasASTContext()) {
     TranslationUnitDecl *TU = getASTContext().getTranslationUnitDecl();
-    TU->addDecl(ImportDecl::CreateImplicit(getASTContext(), TU,
-                                           ImportLoc, Module, 
-                                           Path.back().second));
+    ImportDecl *ImportD = ImportDecl::CreateImplicit(getASTContext(), TU,
+                                                     ImportLoc, Module,
+                                                     Path.back().second);
+    TU->addDecl(ImportD);
+    if (Consumer)
+      Consumer->HandleImplicitImportDecl(ImportD);
   }
   
   LastModuleImportLoc = ImportLoc;
-- 
2.40.0