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diff --git a/include/clang/Sema/SemaFixItUtils.h b/include/clang/Sema/SemaFixItUtils.h
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+//===--- SemaFixItUtils.h - Sema FixIts -----------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines helper classes for generation of Sema FixItHints.
+//
+//===----------------------------------------------------------------------===//
+#ifndef LLVM_CLANG_SEMA_FIXITUTILS_H
+#define LLVM_CLANG_SEMA_FIXITUTILS_H
+
+#include "clang/AST/Expr.h"
+
+namespace clang {
+
+enum OverloadFixItKind {
+ OFIK_Undefined = 0,
+ OFIK_Dereference,
+ OFIK_TakeAddress,
+ OFIK_RemoveDereference,
+ OFIK_RemoveTakeAddress
+};
+
+class Sema;
+
+/// The class facilities generation and storage of conversion FixIts. Hints for
+/// new conversions are added using TryToFixConversion method. The default type
+/// conversion checker can be reset.
+struct ConversionFixItGenerator {
+ /// Performs a simple check to see if From type can be converted to To type.
+ static bool compareTypesSimple(CanQualType From,
+ CanQualType To,
+ Sema &S,
+ SourceLocation Loc,
+ ExprValueKind FromVK);
+
+ /// The list of Hints generated so far.
+ SmallVector<FixItHint, 1> Hints;
+
+ /// The number of Conversions fixed. This can be different from the size
+ /// of the Hints vector since we allow multiple FixIts per conversion.
+ unsigned NumConversionsFixed;
+
+ /// The type of fix applied. If multiple conversions are fixed, corresponds
+ /// to the kid of the very first conversion.
+ OverloadFixItKind Kind;
+
+ typedef bool (*TypeComparisonFuncTy) (const CanQualType FromTy,
+ const CanQualType ToTy,
+ Sema &S,
+ SourceLocation Loc,
+ ExprValueKind FromVK);
+ /// The type comparison function used to decide if expression FromExpr of
+ /// type FromTy can be converted to ToTy. For example, one could check if
+ /// an implicit conversion exists. Returns true if comparison exists.
+ TypeComparisonFuncTy CompareTypes;
+
+ ConversionFixItGenerator(TypeComparisonFuncTy Foo): NumConversionsFixed(0),
+ Kind(OFIK_Undefined),
+ CompareTypes(Foo) {}
+
+ ConversionFixItGenerator(): NumConversionsFixed(0),
+ Kind(OFIK_Undefined),
+ CompareTypes(compareTypesSimple) {}
+
+ /// Resets the default conversion checker method.
+ void setConversionChecker(TypeComparisonFuncTy Foo) {
+ CompareTypes = Foo;
+ }
+
+ /// If possible, generates and stores a fix for the given conversion.
+ bool tryToFixConversion(const Expr *FromExpr,
+ const QualType FromQTy, const QualType ToQTy,
+ Sema &S);
+
+ void clear() {
+ Hints.clear();
+ NumConversionsFixed = 0;
+ }
+
+ bool isNull() {
+ return (NumConversionsFixed == 0);
+ }
+};
+
+} // endof namespace clang
+#endif // LLVM_CLANG_SEMA_FIXITUTILS_H