Argyrios Kyrtzidis | 37ed127 | 2012-12-04 07:27:05 +0000 | [diff] [blame] | 1 | //===--- PPConditionalDirectiveRecord.h - Preprocessing Directives-*- C++ -*-=// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | // |
| 10 | // This file implements the PPConditionalDirectiveRecord class, which maintains |
| 11 | // a record of conditional directive regions. |
| 12 | // |
| 13 | //===----------------------------------------------------------------------===// |
| 14 | #include "clang/Lex/PPConditionalDirectiveRecord.h" |
| 15 | #include "llvm/Support/Capacity.h" |
| 16 | |
| 17 | using namespace clang; |
| 18 | |
| 19 | PPConditionalDirectiveRecord::PPConditionalDirectiveRecord(SourceManager &SM) |
| 20 | : SourceMgr(SM) { |
| 21 | CondDirectiveStack.push_back(SourceLocation()); |
| 22 | } |
| 23 | |
| 24 | bool PPConditionalDirectiveRecord::rangeIntersectsConditionalDirective( |
| 25 | SourceRange Range) const { |
| 26 | if (Range.isInvalid()) |
| 27 | return false; |
| 28 | |
| 29 | CondDirectiveLocsTy::const_iterator |
| 30 | low = std::lower_bound(CondDirectiveLocs.begin(), CondDirectiveLocs.end(), |
| 31 | Range.getBegin(), CondDirectiveLoc::Comp(SourceMgr)); |
| 32 | if (low == CondDirectiveLocs.end()) |
| 33 | return false; |
| 34 | |
| 35 | if (SourceMgr.isBeforeInTranslationUnit(Range.getEnd(), low->getLoc())) |
| 36 | return false; |
| 37 | |
| 38 | CondDirectiveLocsTy::const_iterator |
| 39 | upp = std::upper_bound(low, CondDirectiveLocs.end(), |
| 40 | Range.getEnd(), CondDirectiveLoc::Comp(SourceMgr)); |
| 41 | SourceLocation uppRegion; |
| 42 | if (upp != CondDirectiveLocs.end()) |
| 43 | uppRegion = upp->getRegionLoc(); |
| 44 | |
| 45 | return low->getRegionLoc() != uppRegion; |
| 46 | } |
| 47 | |
| 48 | SourceLocation PPConditionalDirectiveRecord::findConditionalDirectiveRegionLoc( |
| 49 | SourceLocation Loc) const { |
| 50 | if (Loc.isInvalid()) |
| 51 | return SourceLocation(); |
| 52 | if (CondDirectiveLocs.empty()) |
| 53 | return SourceLocation(); |
| 54 | |
| 55 | if (SourceMgr.isBeforeInTranslationUnit(CondDirectiveLocs.back().getLoc(), |
| 56 | Loc)) |
| 57 | return CondDirectiveStack.back(); |
| 58 | |
| 59 | CondDirectiveLocsTy::const_iterator |
| 60 | low = std::lower_bound(CondDirectiveLocs.begin(), CondDirectiveLocs.end(), |
| 61 | Loc, CondDirectiveLoc::Comp(SourceMgr)); |
| 62 | assert(low != CondDirectiveLocs.end()); |
| 63 | return low->getRegionLoc(); |
| 64 | } |
| 65 | |
| 66 | void PPConditionalDirectiveRecord::addCondDirectiveLoc( |
| 67 | CondDirectiveLoc DirLoc) { |
| 68 | // Ignore directives in system headers. |
| 69 | if (SourceMgr.isInSystemHeader(DirLoc.getLoc())) |
| 70 | return; |
| 71 | |
| 72 | assert(CondDirectiveLocs.empty() || |
| 73 | SourceMgr.isBeforeInTranslationUnit(CondDirectiveLocs.back().getLoc(), |
| 74 | DirLoc.getLoc())); |
| 75 | CondDirectiveLocs.push_back(DirLoc); |
| 76 | } |
| 77 | |
| 78 | void PPConditionalDirectiveRecord::If(SourceLocation Loc, |
| 79 | SourceRange ConditionRange) { |
| 80 | addCondDirectiveLoc(CondDirectiveLoc(Loc, CondDirectiveStack.back())); |
| 81 | CondDirectiveStack.push_back(Loc); |
| 82 | } |
| 83 | |
| 84 | void PPConditionalDirectiveRecord::Ifdef(SourceLocation Loc, |
Argyrios Kyrtzidis | 61c1c8e | 2012-12-08 02:21:11 +0000 | [diff] [blame] | 85 | const Token &MacroNameTok, |
| 86 | const MacroInfo *MI) { |
Argyrios Kyrtzidis | 37ed127 | 2012-12-04 07:27:05 +0000 | [diff] [blame] | 87 | addCondDirectiveLoc(CondDirectiveLoc(Loc, CondDirectiveStack.back())); |
| 88 | CondDirectiveStack.push_back(Loc); |
| 89 | } |
| 90 | |
| 91 | void PPConditionalDirectiveRecord::Ifndef(SourceLocation Loc, |
Argyrios Kyrtzidis | 61c1c8e | 2012-12-08 02:21:11 +0000 | [diff] [blame] | 92 | const Token &MacroNameTok, |
| 93 | const MacroInfo *MI) { |
Argyrios Kyrtzidis | 37ed127 | 2012-12-04 07:27:05 +0000 | [diff] [blame] | 94 | addCondDirectiveLoc(CondDirectiveLoc(Loc, CondDirectiveStack.back())); |
| 95 | CondDirectiveStack.push_back(Loc); |
| 96 | } |
| 97 | |
| 98 | void PPConditionalDirectiveRecord::Elif(SourceLocation Loc, |
| 99 | SourceRange ConditionRange, |
| 100 | SourceLocation IfLoc) { |
| 101 | addCondDirectiveLoc(CondDirectiveLoc(Loc, CondDirectiveStack.back())); |
| 102 | CondDirectiveStack.back() = Loc; |
| 103 | } |
| 104 | |
| 105 | void PPConditionalDirectiveRecord::Else(SourceLocation Loc, |
| 106 | SourceLocation IfLoc) { |
| 107 | addCondDirectiveLoc(CondDirectiveLoc(Loc, CondDirectiveStack.back())); |
| 108 | CondDirectiveStack.back() = Loc; |
| 109 | } |
| 110 | |
| 111 | void PPConditionalDirectiveRecord::Endif(SourceLocation Loc, |
| 112 | SourceLocation IfLoc) { |
| 113 | addCondDirectiveLoc(CondDirectiveLoc(Loc, CondDirectiveStack.back())); |
| 114 | assert(!CondDirectiveStack.empty()); |
| 115 | CondDirectiveStack.pop_back(); |
| 116 | } |
| 117 | |
| 118 | size_t PPConditionalDirectiveRecord::getTotalMemory() const { |
| 119 | return llvm::capacity_in_bytes(CondDirectiveLocs); |
| 120 | } |