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| Rev | Author | Line No. | Line |
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| 14 | pmbaty | 1 | //===--- SemaFixItUtils.h - Sema FixIts -------------------------*- C++ -*-===// |
| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | // |
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| 9 | // This file defines helper classes for generation of Sema FixItHints. |
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| 10 | // |
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| 11 | //===----------------------------------------------------------------------===// |
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| 12 | #ifndef LLVM_CLANG_SEMA_SEMAFIXITUTILS_H |
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| 13 | #define LLVM_CLANG_SEMA_SEMAFIXITUTILS_H |
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| 14 | |||
| 15 | #include "clang/AST/Expr.h" |
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| 16 | |||
| 17 | namespace clang { |
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| 18 | |||
| 19 | enum OverloadFixItKind { |
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| 20 | OFIK_Undefined = 0, |
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| 21 | OFIK_Dereference, |
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| 22 | OFIK_TakeAddress, |
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| 23 | OFIK_RemoveDereference, |
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| 24 | OFIK_RemoveTakeAddress |
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| 25 | }; |
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| 26 | |||
| 27 | class Sema; |
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| 28 | |||
| 29 | /// The class facilities generation and storage of conversion FixIts. Hints for |
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| 30 | /// new conversions are added using TryToFixConversion method. The default type |
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| 31 | /// conversion checker can be reset. |
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| 32 | struct ConversionFixItGenerator { |
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| 33 | /// Performs a simple check to see if From type can be converted to To type. |
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| 34 | static bool compareTypesSimple(CanQualType From, |
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| 35 | CanQualType To, |
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| 36 | Sema &S, |
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| 37 | SourceLocation Loc, |
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| 38 | ExprValueKind FromVK); |
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| 39 | |||
| 40 | /// The list of Hints generated so far. |
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| 41 | std::vector<FixItHint> Hints; |
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| 42 | |||
| 43 | /// The number of Conversions fixed. This can be different from the size |
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| 44 | /// of the Hints vector since we allow multiple FixIts per conversion. |
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| 45 | unsigned NumConversionsFixed; |
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| 46 | |||
| 47 | /// The type of fix applied. If multiple conversions are fixed, corresponds |
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| 48 | /// to the kid of the very first conversion. |
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| 49 | OverloadFixItKind Kind; |
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| 50 | |||
| 51 | typedef bool (*TypeComparisonFuncTy) (const CanQualType FromTy, |
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| 52 | const CanQualType ToTy, |
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| 53 | Sema &S, |
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| 54 | SourceLocation Loc, |
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| 55 | ExprValueKind FromVK); |
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| 56 | /// The type comparison function used to decide if expression FromExpr of |
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| 57 | /// type FromTy can be converted to ToTy. For example, one could check if |
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| 58 | /// an implicit conversion exists. Returns true if comparison exists. |
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| 59 | TypeComparisonFuncTy CompareTypes; |
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| 60 | |||
| 61 | ConversionFixItGenerator(TypeComparisonFuncTy Foo): NumConversionsFixed(0), |
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| 62 | Kind(OFIK_Undefined), |
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| 63 | CompareTypes(Foo) {} |
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| 64 | |||
| 65 | ConversionFixItGenerator(): NumConversionsFixed(0), |
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| 66 | Kind(OFIK_Undefined), |
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| 67 | CompareTypes(compareTypesSimple) {} |
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| 68 | |||
| 69 | /// Resets the default conversion checker method. |
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| 70 | void setConversionChecker(TypeComparisonFuncTy Foo) { |
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| 71 | CompareTypes = Foo; |
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| 72 | } |
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| 73 | |||
| 74 | /// If possible, generates and stores a fix for the given conversion. |
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| 75 | bool tryToFixConversion(const Expr *FromExpr, |
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| 76 | const QualType FromQTy, const QualType ToQTy, |
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| 77 | Sema &S); |
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| 78 | |||
| 79 | void clear() { |
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| 80 | Hints.clear(); |
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| 81 | NumConversionsFixed = 0; |
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| 82 | } |
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| 83 | |||
| 84 | bool isNull() { |
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| 85 | return (NumConversionsFixed == 0); |
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| 86 | } |
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| 87 | }; |
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| 88 | |||
| 89 | } // endof namespace clang |
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| 90 | #endif |