Move the functionality of ASTContext::getCanonicalDecl(), into a virtual method Decl::getCanonicalDecl().

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76273 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 14 insertions, 6 deletions

diff --git a/include/clang/AST/Decl.h b/include/clang/AST/Decl.h
index a5c3ea0680..a35638f315 100644
--- a/include/clang/AST/Decl.h
+++ b/include/clang/AST/Decl.h
@@ -437,7 +437,7 @@ public:
     return First->PreviousDeclaration.getPointer();
   }
 
-  virtual Decl *getPrimaryDecl() const;
+  virtual VarDecl *getCanonicalDecl();
 
   /// \brief Iterates through all the redeclarations of the same var decl.
   class redecl_iterator {
@@ -908,7 +908,7 @@ public:
 
   void setPreviousDeclaration(FunctionDecl * PrevDecl);
 
-  virtual Decl *getPrimaryDecl() const;
+  virtual FunctionDecl *getCanonicalDecl();
 
   /// \brief Iterates through all the redeclarations of the same function decl.
   class redecl_iterator {
@@ -1316,6 +1316,8 @@ public:
   void setRBraceLoc(SourceLocation L) { RBraceLoc = L; }
 
   virtual SourceRange getSourceRange() const;
+  
+  virtual TagDecl* getCanonicalDecl();
 
   /// isDefinition - Return true if this decl has its body specified.
   bool isDefinition() const {
diff --git a/include/clang/AST/DeclBase.h b/include/clang/AST/DeclBase.h
index 2d056c479b..5350706ae0 100644
--- a/include/clang/AST/DeclBase.h
+++ b/include/clang/AST/DeclBase.h
@@ -312,12 +312,14 @@ public:
   // be defined inside or outside a function etc).
   bool isDefinedOutsideFunctionOrMethod() const;
 
-  /// \brief When there are multiple re-declarations (e.g. for functions),
-  /// this will return the primary one which all of them point to.
-  virtual Decl *getPrimaryDecl() const { return const_cast<Decl*>(this); }
+  /// \brief Retrieves the "canonical" declaration of the given declaration.
+  virtual Decl *getCanonicalDecl() { return this; }
+  const Decl *getCanonicalDecl() const {
+    return const_cast<Decl*>(this)->getCanonicalDecl();
+  }
 
   /// \brief Whether this particular Decl is a primary one.
-  bool isPrimaryDecl() const { return getPrimaryDecl() == this; }
+  bool isCanonicalDecl() const { return getCanonicalDecl() == this; }
 
   /// getBody - If this Decl represents a declaration for a body of code,
   ///  such as a function or method definition, this method returns the
diff --git a/include/clang/AST/DeclTemplate.h b/include/clang/AST/DeclTemplate.h
index 5d0fe158e0..8601620931 100644
--- a/include/clang/AST/DeclTemplate.h
+++ b/include/clang/AST/DeclTemplate.h
@@ -604,6 +604,8 @@ public:
       CommonOrPrev = Prev;
   }
   
+  virtual FunctionTemplateDecl *getCanonicalDecl();
+  
   /// Create a template function node.
   static FunctionTemplateDecl *Create(ASTContext &C, DeclContext *DC,
                                       SourceLocation L,
@@ -1027,6 +1029,8 @@ public:
   ClassTemplateDecl *getPreviousDeclaration() const {
     return PreviousDeclaration;
   }
+  
+  virtual ClassTemplateDecl *getCanonicalDecl();
 
   /// Create a class template node.
   static ClassTemplateDecl *Create(ASTContext &C, DeclContext *DC,