Comment semantic analysis: treat function typedefs as functions so that one can
use \param and \returns in documentation.
Fixes PR13533.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162507 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/Comment.cpp b/lib/AST/Comment.cpp
index 8a711f0..2af3896 100644
--- a/lib/AST/Comment.cpp
+++ b/lib/AST/Comment.cpp
@@ -240,7 +240,58 @@
case Decl::Namespace:
Kind = NamespaceKind;
break;
- case Decl::Typedef:
+ case Decl::Typedef: {
+ Kind = TypedefKind;
+ // If this is a typedef to something we consider a function, extract
+ // arguments and return type.
+ const TypedefDecl *TD = cast<TypedefDecl>(ThisDecl);
+ const TypeSourceInfo *TSI = TD->getTypeSourceInfo();
+ if (!TSI)
+ break;
+ TypeLoc TL = TSI->getTypeLoc().getUnqualifiedLoc();
+ while (true) {
+ TL = TL.IgnoreParens();
+ // Look through typedefs.
+ if (TypedefTypeLoc *TypedefTL = dyn_cast<TypedefTypeLoc>(&TL)) {
+ TSI = TypedefTL->getTypedefNameDecl()->getTypeSourceInfo();
+ if (TSI)
+ break;
+ TL = TSI->getTypeLoc().getUnqualifiedLoc();
+ continue;
+ }
+ // Look through qualified types.
+ if (QualifiedTypeLoc *QualifiedTL = dyn_cast<QualifiedTypeLoc>(&TL)) {
+ TL = QualifiedTL->getUnqualifiedLoc();
+ continue;
+ }
+ // Look through pointer types.
+ if (PointerTypeLoc *PointerTL = dyn_cast<PointerTypeLoc>(&TL)) {
+ TL = PointerTL->getPointeeLoc().getUnqualifiedLoc();
+ continue;
+ }
+ if (BlockPointerTypeLoc *BlockPointerTL =
+ dyn_cast<BlockPointerTypeLoc>(&TL)) {
+ TL = BlockPointerTL->getPointeeLoc().getUnqualifiedLoc();
+ continue;
+ }
+ if (MemberPointerTypeLoc *MemberPointerTL =
+ dyn_cast<MemberPointerTypeLoc>(&TL)) {
+ TL = MemberPointerTL->getPointeeLoc().getUnqualifiedLoc();
+ continue;
+ }
+ // Is this a typedef for a function type?
+ if (FunctionTypeLoc *FTL = dyn_cast<FunctionTypeLoc>(&TL)) {
+ Kind = FunctionKind;
+ ArrayRef<ParmVarDecl *> Params = FTL->getParams();
+ ParamVars = ArrayRef<const ParmVarDecl *>(Params.data(),
+ Params.size());
+ ResultType = FTL->getResultLoc().getType();
+ break;
+ }
+ break;
+ }
+ break;
+ }
case Decl::TypeAlias:
Kind = TypedefKind;
break;