[cfe-commits] r148354 - in /cfe/trunk: include/clang/Sema/Sema.h lib/Sema/SemaDeclCXX.cpp

[Sebastian Redl]

Author: cornedbee
Date: Tue Jan 17 16:50:14 2012
New Revision: 148354

URL: http://llvm.org/viewvc/llvm-project?rev=148354&view=rev
Log:
Add Sema::isInitListConstructor. This will be needed for upcoming work.

Modified:
    cfe/trunk/include/clang/Sema/Sema.h
    cfe/trunk/lib/Sema/SemaDeclCXX.cpp

Modified: cfe/trunk/include/clang/Sema/Sema.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Sema/Sema.h?rev=148354&r1=148353&r2=148354&view=diff
==============================================================================
--- cfe/trunk/include/clang/Sema/Sema.h (original)
+++ cfe/trunk/include/clang/Sema/Sema.h Tue Jan 17 16:50:14 2012
@@ -2735,6 +2735,10 @@
   /// \returns The instantiated template, or null on error.
   QualType BuildStdInitializerList(QualType Element, SourceLocation Loc);
 
+  /// \brief Determine whether Ctor is an initializer-list constructor, as
+  /// defined in [dcl.init.list]p2.
+  bool isInitListConstructor(const CXXConstructorDecl *Ctor);
+
   Decl *ActOnUsingDirective(Scope *CurScope,
                             SourceLocation UsingLoc,
                             SourceLocation NamespcLoc,

Modified: cfe/trunk/lib/Sema/SemaDeclCXX.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaDeclCXX.cpp?rev=148354&r1=148353&r2=148354&view=diff
==============================================================================
--- cfe/trunk/lib/Sema/SemaDeclCXX.cpp (original)
+++ cfe/trunk/lib/Sema/SemaDeclCXX.cpp Tue Jan 17 16:50:14 2012
@@ -5877,6 +5877,23 @@
       CheckTemplateIdType(TemplateName(StdInitializerList), Loc, Args));
 }
 
+bool Sema::isInitListConstructor(const CXXConstructorDecl* Ctor) {
+  // C++ [dcl.init.list]p2:
+  //   A constructor is an initializer-list constructor if its first parameter
+  //   is of type std::initializer_list<E> or reference to possibly cv-qualified
+  //   std::initializer_list<E> for some type E, and either there are no other
+  //   parameters or else all other parameters have default arguments.
+  if (Ctor->getNumParams() < 1 ||
+      (Ctor->getNumParams() > 1 && !Ctor->getParamDecl(1)->hasDefaultArg()))
+    return false;
+
+  QualType ArgType = Ctor->getParamDecl(0)->getType();
+  if (const ReferenceType *RT = ArgType->getAs<ReferenceType>())
+    ArgType = RT->getPointeeType().getUnqualifiedType();
+
+  return isStdInitializerList(ArgType, 0);
+}
+
 /// \brief Determine whether a using statement is in a context where it will be
 /// apply in all contexts.
 static bool IsUsingDirectiveInToplevelContext(DeclContext *CurContext) {