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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 | |