Preliminary support for function overloading
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57909 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/Sema.h b/lib/Sema/Sema.h
index 796ba4e..039571f 100644
--- a/lib/Sema/Sema.h
+++ b/lib/Sema/Sema.h
@@ -17,6 +17,7 @@
#include "IdentifierResolver.h"
#include "CXXFieldCollector.h"
+#include "SemaOverload.h"
#include "clang/Parse/Action.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/DenseSet.h"
@@ -361,7 +362,46 @@
VarDecl *MergeVarDecl(VarDecl *New, Decl *Old);
FunctionDecl *MergeCXXFunctionDecl(FunctionDecl *New, FunctionDecl *Old);
void CheckForFileScopedRedefinitions(Scope *S, VarDecl *VD);
-
+
+ /// C++ Overloading.
+ bool IsOverload(FunctionDecl *New, Decl* OldD,
+ OverloadedFunctionDecl::function_iterator &MatchedDecl);
+ ImplicitConversionSequence TryCopyInitialization(Expr* From, QualType ToType);
+ bool IsIntegralPromotion(Expr *From, QualType FromType, QualType ToType);
+ bool IsFloatingPointPromotion(QualType FromType, QualType ToType);
+ bool IsPointerConversion(Expr *From, QualType FromType, QualType ToType,
+ QualType& ConvertedType);
+
+ ImplicitConversionSequence::CompareKind
+ CompareImplicitConversionSequences(const ImplicitConversionSequence& ICS1,
+ const ImplicitConversionSequence& ICS2);
+
+ ImplicitConversionSequence::CompareKind
+ CompareStandardConversionSequences(const StandardConversionSequence& SCS1,
+ const StandardConversionSequence& SCS2);
+
+ /// OverloadingResult - Capture the result of performing overload
+ /// resolution.
+ enum OverloadingResult {
+ OR_Success, ///< Overload resolution succeeded.
+ OR_No_Viable_Function, ///< No viable function found.
+ OR_Ambiguous ///< Ambiguous candidates found.
+ };
+
+ void AddOverloadCandidate(FunctionDecl *Function,
+ Expr **Args, unsigned NumArgs,
+ OverloadCandidateSet& CandidateSet);
+ void AddOverloadCandidates(OverloadedFunctionDecl *Ovl,
+ Expr **Args, unsigned NumArgs,
+ OverloadCandidateSet& CandidateSet);
+ bool isBetterOverloadCandidate(const OverloadCandidate& Cand1,
+ const OverloadCandidate& Cand2);
+ OverloadingResult BestViableFunction(OverloadCandidateSet& CandidateSet,
+ OverloadCandidateSet::iterator& Best);
+ void PrintOverloadCandidates(OverloadCandidateSet& CandidateSet,
+ bool OnlyViable);
+
+
/// Helpers for dealing with function parameters
bool CheckParmsForFunctionDef(FunctionDecl *FD);
void CheckCXXDefaultArguments(FunctionDecl *FD);