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| Rev | Author | Line No. | Line |
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| 14 | pmbaty | 1 | //===--- SymbolOccurrences.h - Clang refactoring library ------------------===// |
| 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 | |||
| 9 | #ifndef LLVM_CLANG_TOOLING_REFACTORING_RENAME_SYMBOLOCCURRENCES_H |
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| 10 | #define LLVM_CLANG_TOOLING_REFACTORING_RENAME_SYMBOLOCCURRENCES_H |
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| 11 | |||
| 12 | #include "clang/Basic/LLVM.h" |
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| 13 | #include "clang/Basic/SourceLocation.h" |
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| 14 | #include "llvm/ADT/ArrayRef.h" |
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| 15 | #include "llvm/ADT/StringRef.h" |
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| 16 | #include <vector> |
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| 17 | |||
| 18 | namespace clang { |
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| 19 | namespace tooling { |
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| 20 | |||
| 21 | class SymbolName; |
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| 22 | |||
| 23 | /// An occurrence of a symbol in the source. |
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| 24 | /// |
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| 25 | /// Occurrences can have difference kinds, that describe whether this occurrence |
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| 26 | /// is an exact semantic match, or whether this is a weaker textual match that's |
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| 27 | /// not guaranteed to represent the exact declaration. |
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| 28 | /// |
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| 29 | /// A single occurrence of a symbol can span more than one source range. For |
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| 30 | /// example, Objective-C selectors can contain multiple argument labels: |
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| 31 | /// |
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| 32 | /// \code |
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| 33 | /// [object selectorPiece1: ... selectorPiece2: ...]; |
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| 34 | /// // ^~~ range 0 ~~ ^~~ range 1 ~~ |
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| 35 | /// \endcode |
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| 36 | /// |
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| 37 | /// We have to replace the text in both range 0 and range 1 when renaming the |
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| 38 | /// Objective-C method 'selectorPiece1:selectorPiece2'. |
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| 39 | class SymbolOccurrence { |
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| 40 | public: |
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| 41 | enum OccurrenceKind { |
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| 42 | /// This occurrence is an exact match and can be renamed automatically. |
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| 43 | /// |
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| 44 | /// Note: |
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| 45 | /// Symbol occurrences in macro arguments that expand to different |
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| 46 | /// declarations get marked as exact matches, and thus the renaming engine |
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| 47 | /// will rename them e.g.: |
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| 48 | /// |
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| 49 | /// \code |
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| 50 | /// #define MACRO(x) x + ns::x |
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| 51 | /// int foo(int var) { |
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| 52 | /// return MACRO(var); // var is renamed automatically here when |
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| 53 | /// // either var or ns::var is renamed. |
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| 54 | /// }; |
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| 55 | /// \endcode |
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| 56 | /// |
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| 57 | /// The user will have to fix their code manually after performing such a |
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| 58 | /// rename. |
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| 59 | /// FIXME: The rename verifier should notify user about this issue. |
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| 60 | MatchingSymbol |
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| 61 | }; |
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| 62 | |||
| 63 | SymbolOccurrence(const SymbolName &Name, OccurrenceKind Kind, |
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| 64 | ArrayRef<SourceLocation> Locations); |
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| 65 | |||
| 66 | SymbolOccurrence(SymbolOccurrence &&) = default; |
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| 67 | SymbolOccurrence &operator=(SymbolOccurrence &&) = default; |
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| 68 | |||
| 69 | OccurrenceKind getKind() const { return Kind; } |
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| 70 | |||
| 71 | ArrayRef<SourceRange> getNameRanges() const { |
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| 72 | if (MultipleRanges) |
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| 73 | return llvm::ArrayRef(MultipleRanges.get(), NumRanges); |
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| 74 | return SingleRange; |
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| 75 | } |
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| 76 | |||
| 77 | private: |
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| 78 | OccurrenceKind Kind; |
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| 79 | std::unique_ptr<SourceRange[]> MultipleRanges; |
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| 80 | union { |
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| 81 | SourceRange SingleRange; |
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| 82 | unsigned NumRanges; |
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| 83 | }; |
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| 84 | }; |
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| 85 | |||
| 86 | using SymbolOccurrences = std::vector<SymbolOccurrence>; |
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| 87 | |||
| 88 | } // end namespace tooling |
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| 89 | } // end namespace clang |
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| 90 | |||
| 91 | #endif // LLVM_CLANG_TOOLING_REFACTORING_RENAME_SYMBOLOCCURRENCES_H |