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| 12 | |
| 13 | #include "clang/Sema/ParsedAttr.h" |
| 14 | #include "clang/AST/ASTContext.h" |
| 15 | #include "clang/Basic/AttrSubjectMatchRules.h" |
| 16 | #include "clang/Basic/IdentifierTable.h" |
| 17 | #include "clang/Basic/TargetInfo.h" |
| 18 | #include "clang/Sema/SemaInternal.h" |
| 19 | #include "llvm/ADT/SmallString.h" |
| 20 | #include "llvm/ADT/SmallVector.h" |
| 21 | #include "llvm/ADT/StringRef.h" |
| 22 | #include <cassert> |
| 23 | #include <cstddef> |
| 24 | #include <utility> |
| 25 | |
| 26 | using namespace clang; |
| 27 | |
| 28 | IdentifierLoc *IdentifierLoc::create(ASTContext &Ctx, SourceLocation Loc, |
| 29 | IdentifierInfo *Ident) { |
| 30 | IdentifierLoc *Result = new (Ctx) IdentifierLoc; |
| 31 | Result->Loc = Loc; |
| 32 | Result->Ident = Ident; |
| 33 | return Result; |
| 34 | } |
| 35 | |
| 36 | size_t ParsedAttr::allocated_size() const { |
| 37 | if (IsAvailability) return AttributeFactory::AvailabilityAllocSize; |
| 38 | else if (IsTypeTagForDatatype) |
| 39 | return AttributeFactory::TypeTagForDatatypeAllocSize; |
| 40 | else if (IsProperty) |
| 41 | return AttributeFactory::PropertyAllocSize; |
| 42 | else if (HasParsedType) |
| 43 | return totalSizeToAlloc<ArgsUnion, detail::AvailabilityData, |
| 44 | detail::TypeTagForDatatypeData, ParsedType, |
| 45 | detail::PropertyData>(0, 0, 0, 1, 0); |
| 46 | return totalSizeToAlloc<ArgsUnion, detail::AvailabilityData, |
| 47 | detail::TypeTagForDatatypeData, ParsedType, |
| 48 | detail::PropertyData>(NumArgs, 0, 0, 0, 0); |
| 49 | } |
| 50 | |
| 51 | AttributeFactory::AttributeFactory() { |
| 52 | |
| 53 | FreeLists.resize(InlineFreeListsCapacity); |
| 54 | } |
| 55 | AttributeFactory::~AttributeFactory() = default; |
| 56 | |
| 57 | static size_t getFreeListIndexForSize(size_t size) { |
| 58 | = sizeof(ParsedAttr)", "/home/seafit/code_projects/clang_source/clang/lib/Sema/ParsedAttr.cpp", 58, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(size >= sizeof(ParsedAttr)); |
| 59 | assert((size % sizeof(void*)) == 0); |
| 60 | return ((size - sizeof(ParsedAttr)) / sizeof(void *)); |
| 61 | } |
| 62 | |
| 63 | void *AttributeFactory::allocate(size_t size) { |
| 64 | |
| 65 | size_t index = getFreeListIndexForSize(size); |
| 66 | if (index < FreeLists.size() && !FreeLists[index].empty()) { |
| 67 | ParsedAttr *attr = FreeLists[index].back(); |
| 68 | FreeLists[index].pop_back(); |
| 69 | return attr; |
| 70 | } |
| 71 | |
| 72 | |
| 73 | return Alloc.Allocate(size, alignof(AttributeFactory)); |
| 74 | } |
| 75 | |
| 76 | void AttributeFactory::deallocate(ParsedAttr *Attr) { |
| 77 | size_t size = Attr->allocated_size(); |
| 78 | size_t freeListIndex = getFreeListIndexForSize(size); |
| 79 | |
| 80 | |
| 81 | if (freeListIndex >= FreeLists.size()) |
| 82 | FreeLists.resize(freeListIndex + 1); |
| 83 | |
| 84 | #ifndef NDEBUG |
| 85 | |
| 86 | memset(Attr, 0, size); |
| 87 | #endif |
| 88 | |
| 89 | |
| 90 | FreeLists[freeListIndex].push_back(Attr); |
| 91 | } |
| 92 | |
| 93 | void AttributeFactory::reclaimPool(AttributePool &cur) { |
| 94 | for (ParsedAttr *AL : cur.Attrs) |
| 95 | deallocate(AL); |
| 96 | } |
| 97 | |
| 98 | void AttributePool::takePool(AttributePool &pool) { |
| 99 | Attrs.insert(Attrs.end(), pool.Attrs.begin(), pool.Attrs.end()); |
| 100 | pool.Attrs.clear(); |
| 101 | } |
| 102 | |
| 103 | #include "clang/Sema/AttrParsedAttrKinds.inc" |
| 104 | |
| 105 | static StringRef normalizeAttrScopeName(StringRef ScopeName, |
| 106 | ParsedAttr::Syntax SyntaxUsed) { |
| 107 | |
| 108 | |
| 109 | if (SyntaxUsed == ParsedAttr::AS_CXX11 || |
| 110 | SyntaxUsed == ParsedAttr::AS_C2x) { |
| 111 | if (ScopeName == "__gnu__") |
| 112 | ScopeName = "gnu"; |
| 113 | else if (ScopeName == "_Clang") |
| 114 | ScopeName = "clang"; |
| 115 | } |
| 116 | return ScopeName; |
| 117 | } |
| 118 | |
| 119 | static StringRef normalizeAttrName(StringRef AttrName, |
| 120 | StringRef NormalizedScopeName, |
| 121 | ParsedAttr::Syntax SyntaxUsed) { |
| 122 | |
| 123 | |
| 124 | bool ShouldNormalize = |
| 125 | SyntaxUsed == ParsedAttr::AS_GNU || |
| 126 | ((SyntaxUsed == ParsedAttr::AS_CXX11 || |
| 127 | SyntaxUsed == ParsedAttr::AS_C2x) && |
| 128 | (NormalizedScopeName == "gnu" || NormalizedScopeName == "clang")); |
| 129 | if (ShouldNormalize && AttrName.size() >= 4 && AttrName.startswith("__") && |
| 130 | AttrName.endswith("__")) |
| 131 | AttrName = AttrName.slice(2, AttrName.size() - 2); |
| 132 | |
| 133 | return AttrName; |
| 134 | } |
| 135 | |
| 136 | ParsedAttr::Kind ParsedAttr::getKind(const IdentifierInfo *Name, |
| 137 | const IdentifierInfo *ScopeName, |
| 138 | Syntax SyntaxUsed) { |
| 139 | StringRef AttrName = Name->getName(); |
| 140 | |
| 141 | SmallString<64> FullName; |
| 142 | if (ScopeName) |
| 143 | FullName += normalizeAttrScopeName(ScopeName->getName(), SyntaxUsed); |
| 144 | |
| 145 | AttrName = normalizeAttrName(AttrName, FullName, SyntaxUsed); |
| 146 | |
| 147 | |
| 148 | |
| 149 | if (ScopeName || SyntaxUsed == AS_CXX11 || SyntaxUsed == AS_C2x) |
| 150 | FullName += "::"; |
| 151 | FullName += AttrName; |
| 152 | |
| 153 | return ::getAttrKind(FullName, SyntaxUsed); |
| 154 | } |
| 155 | |
| 156 | unsigned ParsedAttr::getAttributeSpellingListIndex() const { |
| 157 | |
| 158 | |
| 159 | auto Syntax = static_cast<ParsedAttr::Syntax>(SyntaxUsed); |
| 160 | StringRef Scope = |
| 161 | ScopeName ? normalizeAttrScopeName(ScopeName->getName(), Syntax) : ""; |
| 162 | StringRef Name = normalizeAttrName(AttrName->getName(), Scope, Syntax); |
| 163 | |
| 164 | #include "clang/Sema/AttrSpellingListIndex.inc" |
| 165 | |
| 166 | } |
| 167 | |
| 168 | struct ParsedAttrInfo { |
| 169 | unsigned NumArgs : 4; |
| 170 | unsigned OptArgs : 4; |
| 171 | unsigned HasCustomParsing : 1; |
| 172 | unsigned IsTargetSpecific : 1; |
| 173 | unsigned IsType : 1; |
| 174 | unsigned IsStmt : 1; |
| 175 | unsigned IsKnownToGCC : 1; |
| 176 | unsigned IsSupportedByPragmaAttribute : 1; |
| 177 | |
| 178 | bool (*DiagAppertainsToDecl)(Sema &S, const ParsedAttr &Attr, const Decl *); |
| 179 | bool (*DiagLangOpts)(Sema &S, const ParsedAttr &Attr); |
| 180 | bool (*ExistsInTarget)(const TargetInfo &Target); |
| 181 | unsigned (*SpellingIndexToSemanticSpelling)(const ParsedAttr &Attr); |
| 182 | void (*GetPragmaAttributeMatchRules)( |
| 183 | llvm::SmallVectorImpl<std::pair<attr::SubjectMatchRule, bool>> &Rules, |
| 184 | const LangOptions &LangOpts); |
| 185 | }; |
| 186 | |
| 187 | namespace { |
| 188 | |
| 189 | #include "clang/Sema/AttrParsedAttrImpl.inc" |
| 190 | |
| 191 | } |
| 192 | |
| 193 | static const ParsedAttrInfo &getInfo(const ParsedAttr &A) { |
| 194 | return AttrInfoMap[A.getKind()]; |
| 195 | } |
| 196 | |
| 197 | unsigned ParsedAttr::getMinArgs() const { return getInfo(*this).NumArgs; } |
| 198 | |
| 199 | unsigned ParsedAttr::getMaxArgs() const { |
| 200 | return getMinArgs() + getInfo(*this).OptArgs; |
| 201 | } |
| 202 | |
| 203 | bool ParsedAttr::hasCustomParsing() const { |
| 204 | return getInfo(*this).HasCustomParsing; |
| 205 | } |
| 206 | |
| 207 | bool ParsedAttr::diagnoseAppertainsTo(Sema &S, const Decl *D) const { |
| 208 | return getInfo(*this).DiagAppertainsToDecl(S, *this, D); |
| 209 | } |
| 210 | |
| 211 | bool ParsedAttr::appliesToDecl(const Decl *D, |
| 212 | attr::SubjectMatchRule MatchRule) const { |
| 213 | return checkAttributeMatchRuleAppliesTo(D, MatchRule); |
| 214 | } |
| 215 | |
| 216 | void ParsedAttr::getMatchRules( |
| 217 | const LangOptions &LangOpts, |
| 218 | SmallVectorImpl<std::pair<attr::SubjectMatchRule, bool>> &MatchRules) |
| 219 | const { |
| 220 | return getInfo(*this).GetPragmaAttributeMatchRules(MatchRules, LangOpts); |
| 221 | } |
| 222 | |
| 223 | bool ParsedAttr::diagnoseLangOpts(Sema &S) const { |
| 224 | return getInfo(*this).DiagLangOpts(S, *this); |
| 225 | } |
| 226 | |
| 227 | bool ParsedAttr::isTargetSpecificAttr() const { |
| 228 | return getInfo(*this).IsTargetSpecific; |
| 229 | } |
| 230 | |
| 231 | bool ParsedAttr::isTypeAttr() const { return getInfo(*this).IsType; } |
| 232 | |
| 233 | bool ParsedAttr::isStmtAttr() const { return getInfo(*this).IsStmt; } |
| 234 | |
| 235 | bool ParsedAttr::existsInTarget(const TargetInfo &Target) const { |
| 236 | return getInfo(*this).ExistsInTarget(Target); |
| 237 | } |
| 238 | |
| 239 | bool ParsedAttr::isKnownToGCC() const { return getInfo(*this).IsKnownToGCC; } |
| 240 | |
| 241 | bool ParsedAttr::isSupportedByPragmaAttribute() const { |
| 242 | return getInfo(*this).IsSupportedByPragmaAttribute; |
| 243 | } |
| 244 | |
| 245 | unsigned ParsedAttr::getSemanticSpelling() const { |
| 246 | return getInfo(*this).SpellingIndexToSemanticSpelling(*this); |
| 247 | } |
| 248 | |
| 249 | bool ParsedAttr::hasVariadicArg() const { |
| 250 | |
| 251 | |
| 252 | |
| 253 | |
| 254 | return getInfo(*this).OptArgs == 15; |
| 255 | } |
| 256 | |