r193027 - Add isFirstDecl to DecBase too and use it instead of getPreviousDecl() == 0.

Rafael Espindola rafael.espindola at gmail.com
Fri Oct 18 19:13:22 PDT 2013


Author: rafael
Date: Fri Oct 18 21:13:21 2013
New Revision: 193027

URL: http://llvm.org/viewvc/llvm-project?rev=193027&view=rev
Log:
Add isFirstDecl to DecBase too and use it instead of getPreviousDecl() == 0.

Redeclarable already had a isFirstDecl, but it was missing from DeclBase.

Modified:
    cfe/trunk/include/clang/AST/Decl.h
    cfe/trunk/include/clang/AST/DeclBase.h
    cfe/trunk/include/clang/AST/DeclObjC.h
    cfe/trunk/include/clang/AST/DeclTemplate.h
    cfe/trunk/lib/AST/ASTContext.cpp
    cfe/trunk/lib/Sema/SemaDecl.cpp
    cfe/trunk/lib/Serialization/ASTWriter.cpp

Modified: cfe/trunk/include/clang/AST/Decl.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/AST/Decl.h?rev=193027&r1=193026&r2=193027&view=diff
==============================================================================
--- cfe/trunk/include/clang/AST/Decl.h (original)
+++ cfe/trunk/include/clang/AST/Decl.h Fri Oct 18 21:13:21 2013
@@ -368,6 +368,7 @@ public:
   using redeclarable_base::redecls_end;
   using redeclarable_base::getPreviousDecl;
   using redeclarable_base::getMostRecentDecl;
+  using redeclarable_base::isFirstDecl;
 
   /// \brief Returns true if this is an anonymous namespace declaration.
   ///
@@ -775,6 +776,7 @@ public:
   using redeclarable_base::redecls_end;
   using redeclarable_base::getPreviousDecl;
   using redeclarable_base::getMostRecentDecl;
+  using redeclarable_base::isFirstDecl;
 
   static VarDecl *Create(ASTContext &C, DeclContext *DC,
                          SourceLocation StartLoc, SourceLocation IdLoc,
@@ -1563,6 +1565,7 @@ public:
   using redeclarable_base::redecls_end;
   using redeclarable_base::getPreviousDecl;
   using redeclarable_base::getMostRecentDecl;
+  using redeclarable_base::isFirstDecl;
 
   static FunctionDecl *Create(ASTContext &C, DeclContext *DC,
                               SourceLocation StartLoc, SourceLocation NLoc,
@@ -2390,6 +2393,7 @@ public:
   using redeclarable_base::redecls_end;
   using redeclarable_base::getPreviousDecl;
   using redeclarable_base::getMostRecentDecl;
+  using redeclarable_base::isFirstDecl;
 
   bool isModed() const { return MaybeModedTInfo.is<ModedTInfo*>(); }
 
@@ -2574,6 +2578,7 @@ public:
   using redeclarable_base::redecls_end;
   using redeclarable_base::getPreviousDecl;
   using redeclarable_base::getMostRecentDecl;
+  using redeclarable_base::isFirstDecl;
 
   SourceLocation getRBraceLoc() const { return RBraceLoc; }
   void setRBraceLoc(SourceLocation L) { RBraceLoc = L; }

Modified: cfe/trunk/include/clang/AST/DeclBase.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/AST/DeclBase.h?rev=193027&r1=193026&r2=193027&view=diff
==============================================================================
--- cfe/trunk/include/clang/AST/DeclBase.h (original)
+++ cfe/trunk/include/clang/AST/DeclBase.h Fri Oct 18 21:13:21 2013
@@ -785,7 +785,12 @@ public:
   const Decl *getPreviousDecl() const { 
     return const_cast<Decl *>(this)->getPreviousDeclImpl();
   }
-  
+
+  /// \brief Returns true if this is the first declaration.
+  bool isFirstDecl() const {
+    return getPreviousDecl() == 0;
+  }
+
   /// \brief Retrieve the most recent declaration that declares the same entity
   /// as this declaration (which may be this declaration).
   Decl *getMostRecentDecl() { return getMostRecentDeclImpl(); }

Modified: cfe/trunk/include/clang/AST/DeclObjC.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/AST/DeclObjC.h?rev=193027&r1=193026&r2=193027&view=diff
==============================================================================
--- cfe/trunk/include/clang/AST/DeclObjC.h (original)
+++ cfe/trunk/include/clang/AST/DeclObjC.h Fri Oct 18 21:13:21 2013
@@ -1201,6 +1201,7 @@ public:
   using redeclarable_base::redecls_end;
   using redeclarable_base::getPreviousDecl;
   using redeclarable_base::getMostRecentDecl;
+  using redeclarable_base::isFirstDecl;
 
   /// Retrieves the canonical declaration of this Objective-C class.
   ObjCInterfaceDecl *getCanonicalDecl() { return getFirstDecl(); }
@@ -1503,6 +1504,7 @@ public:
   using redeclarable_base::redecls_end;
   using redeclarable_base::getPreviousDecl;
   using redeclarable_base::getMostRecentDecl;
+  using redeclarable_base::isFirstDecl;
 
   /// Retrieves the canonical declaration of this Objective-C protocol.
   ObjCProtocolDecl *getCanonicalDecl() { return getFirstDecl(); }

Modified: cfe/trunk/include/clang/AST/DeclTemplate.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/AST/DeclTemplate.h?rev=193027&r1=193026&r2=193027&view=diff
==============================================================================
--- cfe/trunk/include/clang/AST/DeclTemplate.h (original)
+++ cfe/trunk/include/clang/AST/DeclTemplate.h Fri Oct 18 21:13:21 2013
@@ -715,6 +715,7 @@ public:
   using redeclarable_base::redecls_end;
   using redeclarable_base::getPreviousDecl;
   using redeclarable_base::getMostRecentDecl;
+  using redeclarable_base::isFirstDecl;
 
   // Implement isa/cast/dyncast/etc.
   static bool classof(const Decl *D) { return classofKind(D->getKind()); }

Modified: cfe/trunk/lib/AST/ASTContext.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/AST/ASTContext.cpp?rev=193027&r1=193026&r2=193027&view=diff
==============================================================================
--- cfe/trunk/lib/AST/ASTContext.cpp (original)
+++ cfe/trunk/lib/AST/ASTContext.cpp Fri Oct 18 21:13:21 2013
@@ -2922,13 +2922,11 @@ QualType ASTContext::getTypeDeclTypeSlow
          "Template type parameter types are always available.");
 
   if (const RecordDecl *Record = dyn_cast<RecordDecl>(Decl)) {
-    assert(!Record->getPreviousDecl() &&
-           "struct/union has previous declaration");
+    assert(Record->isFirstDecl() && "struct/union has previous declaration");
     assert(!NeedsInjectedClassNameType(Record));
     return getRecordType(Record);
   } else if (const EnumDecl *Enum = dyn_cast<EnumDecl>(Decl)) {
-    assert(!Enum->getPreviousDecl() &&
-           "enum has previous declaration");
+    assert(Enum->isFirstDecl() && "enum has previous declaration");
     return getEnumType(Enum);
   } else if (const UnresolvedUsingTypenameDecl *Using =
                dyn_cast<UnresolvedUsingTypenameDecl>(Decl)) {

Modified: cfe/trunk/lib/Sema/SemaDecl.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaDecl.cpp?rev=193027&r1=193026&r2=193027&view=diff
==============================================================================
--- cfe/trunk/lib/Sema/SemaDecl.cpp (original)
+++ cfe/trunk/lib/Sema/SemaDecl.cpp Fri Oct 18 21:13:21 2013
@@ -5388,7 +5388,7 @@ Sema::ActOnVariableDeclarator(Scope *S,
 
   // If this is the first declaration of an extern C variable, update
   // the map of such variables.
-  if (!NewVD->getPreviousDecl() && !NewVD->isInvalidDecl() &&
+  if (NewVD->isFirstDecl() && !NewVD->isInvalidDecl() &&
       isIncompleteDeclExternC(*this, NewVD))
     RegisterLocallyScopedExternCDecl(NewVD, S);
 
@@ -7205,7 +7205,7 @@ Sema::ActOnFunctionDeclarator(Scope *S,
 
   // If this is the first declaration of an extern C variable, update
   // the map of such variables.
-  if (!NewFD->getPreviousDecl() && !NewFD->isInvalidDecl() &&
+  if (NewFD->isFirstDecl() && !NewFD->isInvalidDecl() &&
       isIncompleteDeclExternC(*this, NewFD))
     RegisterLocallyScopedExternCDecl(NewFD, S);
 
@@ -8520,7 +8520,7 @@ void Sema::ActOnUninitializedDecl(Decl *
           // is accepted by gcc. Hence here we issue a warning instead of
           // an error and we do not invalidate the static declaration.
           // NOTE: to avoid multiple warnings, only check the first declaration.
-          if (Var->getPreviousDecl() == 0)
+          if (Var->isFirstDecl())
             RequireCompleteType(Var->getLocation(), Type,
                                 diag::ext_typecheck_decl_incomplete_type);
         }
@@ -9619,7 +9619,7 @@ Decl *Sema::ActOnFinishFunctionBody(Decl
     // The only way to be included in UndefinedButUsed is if there is an
     // ODR use before the definition. Avoid the expensive map lookup if this
     // is the first declaration.
-    if (FD->getPreviousDecl() != 0 && FD->getPreviousDecl()->isUsed()) {
+    if (!FD->isFirstDecl() && FD->getPreviousDecl()->isUsed()) {
       if (!FD->isExternallyVisible())
         UndefinedButUsed.erase(FD);
       else if (FD->isInlined() &&

Modified: cfe/trunk/lib/Serialization/ASTWriter.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Serialization/ASTWriter.cpp?rev=193027&r1=193026&r2=193027&view=diff
==============================================================================
--- cfe/trunk/lib/Serialization/ASTWriter.cpp (original)
+++ cfe/trunk/lib/Serialization/ASTWriter.cpp Fri Oct 18 21:13:21 2013
@@ -3531,7 +3531,7 @@ void ASTWriter::WriteRedeclarations() {
 
   for (unsigned I = 0, N = Redeclarations.size(); I != N; ++I) {
     Decl *First = Redeclarations[I];
-    assert(First->getPreviousDecl() == 0 && "Not the first declaration?");
+    assert(First->isFirstDecl() && "Not the first declaration?");
     
     Decl *MostRecent = First->getMostRecentDecl();
     





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