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| Rev | Author | Line No. | Line |
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| 14 | pmbaty | 1 | //===--- PPConditionalDirectiveRecord.h - Preprocessing Directives-*- 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 the PPConditionalDirectiveRecord class, which maintains |
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| 10 | // a record of conditional directive regions. |
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| 11 | // |
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| 12 | //===----------------------------------------------------------------------===// |
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| 13 | #ifndef LLVM_CLANG_LEX_PPCONDITIONALDIRECTIVERECORD_H |
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| 14 | #define LLVM_CLANG_LEX_PPCONDITIONALDIRECTIVERECORD_H |
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| 15 | |||
| 16 | #include "clang/Basic/SourceLocation.h" |
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| 17 | #include "clang/Lex/PPCallbacks.h" |
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| 18 | #include "llvm/ADT/SmallVector.h" |
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| 19 | #include <vector> |
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| 20 | |||
| 21 | namespace clang { |
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| 22 | |||
| 23 | /// Records preprocessor conditional directive regions and allows |
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| 24 | /// querying in which region source locations belong to. |
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| 25 | class PPConditionalDirectiveRecord : public PPCallbacks { |
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| 26 | SourceManager &SourceMgr; |
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| 27 | |||
| 28 | SmallVector<SourceLocation, 6> CondDirectiveStack; |
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| 29 | |||
| 30 | class CondDirectiveLoc { |
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| 31 | SourceLocation Loc; |
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| 32 | SourceLocation RegionLoc; |
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| 33 | |||
| 34 | public: |
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| 35 | CondDirectiveLoc(SourceLocation Loc, SourceLocation RegionLoc) |
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| 36 | : Loc(Loc), RegionLoc(RegionLoc) {} |
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| 37 | |||
| 38 | SourceLocation getLoc() const { return Loc; } |
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| 39 | SourceLocation getRegionLoc() const { return RegionLoc; } |
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| 40 | |||
| 41 | class Comp { |
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| 42 | SourceManager &SM; |
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| 43 | public: |
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| 44 | explicit Comp(SourceManager &SM) : SM(SM) {} |
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| 45 | bool operator()(const CondDirectiveLoc &LHS, |
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| 46 | const CondDirectiveLoc &RHS) { |
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| 47 | return SM.isBeforeInTranslationUnit(LHS.getLoc(), RHS.getLoc()); |
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| 48 | } |
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| 49 | bool operator()(const CondDirectiveLoc &LHS, SourceLocation RHS) { |
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| 50 | return SM.isBeforeInTranslationUnit(LHS.getLoc(), RHS); |
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| 51 | } |
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| 52 | bool operator()(SourceLocation LHS, const CondDirectiveLoc &RHS) { |
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| 53 | return SM.isBeforeInTranslationUnit(LHS, RHS.getLoc()); |
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| 54 | } |
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| 55 | }; |
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| 56 | }; |
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| 57 | |||
| 58 | typedef std::vector<CondDirectiveLoc> CondDirectiveLocsTy; |
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| 59 | /// The locations of conditional directives in source order. |
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| 60 | CondDirectiveLocsTy CondDirectiveLocs; |
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| 61 | |||
| 62 | void addCondDirectiveLoc(CondDirectiveLoc DirLoc); |
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| 63 | |||
| 64 | public: |
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| 65 | /// Construct a new preprocessing record. |
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| 66 | explicit PPConditionalDirectiveRecord(SourceManager &SM); |
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| 67 | |||
| 68 | size_t getTotalMemory() const; |
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| 69 | |||
| 70 | SourceManager &getSourceManager() const { return SourceMgr; } |
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| 71 | |||
| 72 | /// Returns true if the given range intersects with a conditional |
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| 73 | /// directive. if a \#if/\#endif block is fully contained within the range, |
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| 74 | /// this function will return false. |
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| 75 | bool rangeIntersectsConditionalDirective(SourceRange Range) const; |
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| 76 | |||
| 77 | /// Returns true if the given locations are in different regions, |
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| 78 | /// separated by conditional directive blocks. |
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| 79 | bool areInDifferentConditionalDirectiveRegion(SourceLocation LHS, |
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| 80 | SourceLocation RHS) const { |
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| 81 | return findConditionalDirectiveRegionLoc(LHS) != |
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| 82 | findConditionalDirectiveRegionLoc(RHS); |
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| 83 | } |
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| 84 | |||
| 85 | SourceLocation findConditionalDirectiveRegionLoc(SourceLocation Loc) const; |
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| 86 | |||
| 87 | private: |
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| 88 | void If(SourceLocation Loc, SourceRange ConditionRange, |
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| 89 | ConditionValueKind ConditionValue) override; |
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| 90 | void Elif(SourceLocation Loc, SourceRange ConditionRange, |
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| 91 | ConditionValueKind ConditionValue, SourceLocation IfLoc) override; |
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| 92 | void Ifdef(SourceLocation Loc, const Token &MacroNameTok, |
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| 93 | const MacroDefinition &MD) override; |
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| 94 | void Ifndef(SourceLocation Loc, const Token &MacroNameTok, |
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| 95 | const MacroDefinition &MD) override; |
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| 96 | void Elifdef(SourceLocation Loc, const Token &MacroNameTok, |
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| 97 | const MacroDefinition &MD) override; |
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| 98 | void Elifdef(SourceLocation Loc, SourceRange ConditionRange, |
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| 99 | SourceLocation IfLoc) override; |
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| 100 | void Elifndef(SourceLocation Loc, const Token &MacroNameTok, |
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| 101 | const MacroDefinition &MD) override; |
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| 102 | void Elifndef(SourceLocation Loc, SourceRange ConditionRange, |
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| 103 | SourceLocation IfLoc) override; |
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| 104 | void Else(SourceLocation Loc, SourceLocation IfLoc) override; |
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| 105 | void Endif(SourceLocation Loc, SourceLocation IfLoc) override; |
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| 106 | }; |
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| 107 | |||
| 108 | } // end namespace clang |
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| 109 | |||
| 110 | #endif // LLVM_CLANG_LEX_PPCONDITIONALDIRECTIVERECORD_H |