C++ Modules TS: Add parsing and some semantic analysis support for

export-declarations. These don't yet have an effect on name visibility;
we still export everything by default.

llvm-svn: 280999

3 files changed, 18 insertions, 0 deletions

diff --git a/clang/lib/Serialization/ASTCommon.cpp b/clang/lib/Serialization/ASTCommon.cpp
index 07d0c1c9ae5..79ccffc5abb 100644
--- a/clang/lib/Serialization/ASTCommon.cpp
+++ b/clang/lib/Serialization/ASTCommon.cpp
@@ -183,6 +183,7 @@ serialization::getDefinitiveDeclContext(const DeclContext *DC) {
   case Decl::ExternCContext:
   case Decl::Namespace:
   case Decl::LinkageSpec:
+  case Decl::Export:
     return nullptr;
 
   // C/C++ tag types can only be defined in one place.
@@ -291,6 +292,7 @@ bool serialization::isRedeclarableDeclKind(unsigned Kind) {
   case Decl::ObjCProperty:
   case Decl::ObjCCompatibleAlias:
   case Decl::LinkageSpec:
+  case Decl::Export:
   case Decl::ObjCPropertyImpl:
   case Decl::PragmaComment:
   case Decl::PragmaDetectMismatch:
diff --git a/clang/lib/Serialization/ASTReaderDecl.cpp b/clang/lib/Serialization/ASTReaderDecl.cpp
index 620e1fed300..3cc54048188 100644
--- a/clang/lib/Serialization/ASTReaderDecl.cpp
+++ b/clang/lib/Serialization/ASTReaderDecl.cpp
@@ -327,6 +327,7 @@ namespace clang {
     void VisitUsingShadowDecl(UsingShadowDecl *D);
     void VisitConstructorUsingShadowDecl(ConstructorUsingShadowDecl *D);
     void VisitLinkageSpecDecl(LinkageSpecDecl *D);
+    void VisitExportDecl(ExportDecl *D);
     void VisitFileScopeAsmDecl(FileScopeAsmDecl *AD);
     void VisitImportDecl(ImportDecl *D);
     void VisitAccessSpecDecl(AccessSpecDecl *D);
@@ -1366,6 +1367,11 @@ void ASTDeclReader::VisitLinkageSpecDecl(LinkageSpecDecl *D) {
   D->setRBraceLoc(ReadSourceLocation(Record, Idx));
 }
 
+void ASTDeclReader::VisitExportDecl(ExportDecl *D) {
+  VisitDecl(D);
+  D->RBraceLoc = ReadSourceLocation(Record, Idx);
+}
+
 void ASTDeclReader::VisitLabelDecl(LabelDecl *D) {
   VisitNamedDecl(D);
   D->setLocStart(ReadSourceLocation(Record, Idx));
@@ -3266,6 +3272,9 @@ Decl *ASTReader::ReadDeclRecord(DeclID ID) {
   case DECL_LINKAGE_SPEC:
     D = LinkageSpecDecl::CreateDeserialized(Context, ID);
     break;
+  case DECL_EXPORT:
+    D = ExportDecl::CreateDeserialized(Context, ID);
+    break;
   case DECL_LABEL:
     D = LabelDecl::CreateDeserialized(Context, ID);
     break;
diff --git a/clang/lib/Serialization/ASTWriterDecl.cpp b/clang/lib/Serialization/ASTWriterDecl.cpp
index 158123b1c06..a923d276fe9 100644
--- a/clang/lib/Serialization/ASTWriterDecl.cpp
+++ b/clang/lib/Serialization/ASTWriterDecl.cpp
@@ -110,6 +110,7 @@ namespace clang {
     void VisitUsingShadowDecl(UsingShadowDecl *D);
     void VisitConstructorUsingShadowDecl(ConstructorUsingShadowDecl *D);
     void VisitLinkageSpecDecl(LinkageSpecDecl *D);
+    void VisitExportDecl(ExportDecl *D);
     void VisitFileScopeAsmDecl(FileScopeAsmDecl *D);
     void VisitImportDecl(ImportDecl *D);
     void VisitAccessSpecDecl(AccessSpecDecl *D);
@@ -1080,6 +1081,12 @@ void ASTDeclWriter::VisitLinkageSpecDecl(LinkageSpecDecl *D) {
   Code = serialization::DECL_LINKAGE_SPEC;
 }
 
+void ASTDeclWriter::VisitExportDecl(ExportDecl *D) {
+  VisitDecl(D);
+  Record.AddSourceLocation(D->getRBraceLoc());
+  Code = serialization::DECL_EXPORT;
+}
+
 void ASTDeclWriter::VisitLabelDecl(LabelDecl *D) {
   VisitNamedDecl(D);
   Record.AddSourceLocation(D->getLocStart());