Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1 | //===--- Decl.cpp - Declaration AST Node Implementation -------------------===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
Chris Lattner | 0bc735f | 2007-12-29 19:59:25 +0000 | [diff] [blame] | 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | // |
Argyrios Kyrtzidis | e184bae | 2008-06-04 13:04:04 +0000 | [diff] [blame] | 10 | // This file implements the Decl subclasses. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 11 | // |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
| 14 | #include "clang/AST/Decl.h" |
Chris Lattner | 6c2b6eb | 2008-03-15 06:12:44 +0000 | [diff] [blame] | 15 | #include "clang/AST/ASTContext.h" |
Benjamin Kramer | 2fa67ef | 2012-12-01 15:09:41 +0000 | [diff] [blame] | 16 | #include "clang/AST/ASTMutationListener.h" |
| 17 | #include "clang/AST/Attr.h" |
Chandler Carruth | 55fc873 | 2012-12-04 09:13:33 +0000 | [diff] [blame] | 18 | #include "clang/AST/DeclCXX.h" |
| 19 | #include "clang/AST/DeclObjC.h" |
| 20 | #include "clang/AST/DeclTemplate.h" |
Nuno Lopes | 99f06ba | 2008-12-17 23:39:55 +0000 | [diff] [blame] | 21 | #include "clang/AST/Expr.h" |
Anders Carlsson | 337cba4 | 2009-12-15 19:16:31 +0000 | [diff] [blame] | 22 | #include "clang/AST/ExprCXX.h" |
Douglas Gregor | d249e1d1f | 2009-05-29 20:38:28 +0000 | [diff] [blame] | 23 | #include "clang/AST/PrettyPrinter.h" |
Benjamin Kramer | 2fa67ef | 2012-12-01 15:09:41 +0000 | [diff] [blame] | 24 | #include "clang/AST/Stmt.h" |
| 25 | #include "clang/AST/TypeLoc.h" |
Chris Lattner | 1b63e4f | 2009-06-14 01:54:56 +0000 | [diff] [blame] | 26 | #include "clang/Basic/Builtins.h" |
Daniel Dunbar | e91593e | 2008-08-11 04:54:23 +0000 | [diff] [blame] | 27 | #include "clang/Basic/IdentifierTable.h" |
Douglas Gregor | 15de72c | 2011-12-02 23:23:56 +0000 | [diff] [blame] | 28 | #include "clang/Basic/Module.h" |
Abramo Bagnara | 465d41b | 2010-05-11 21:36:43 +0000 | [diff] [blame] | 29 | #include "clang/Basic/Specifiers.h" |
Douglas Gregor | 4421d2b | 2011-03-26 12:10:19 +0000 | [diff] [blame] | 30 | #include "clang/Basic/TargetInfo.h" |
John McCall | f1bbbb4 | 2009-09-04 01:14:41 +0000 | [diff] [blame] | 31 | #include "llvm/Support/ErrorHandling.h" |
John McCall | 3892d02 | 2013-02-21 23:42:58 +0000 | [diff] [blame] | 32 | #include "llvm/Support/type_traits.h" |
David Blaikie | 4278c65 | 2011-09-21 18:16:56 +0000 | [diff] [blame] | 33 | #include <algorithm> |
| 34 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 35 | using namespace clang; |
| 36 | |
Chris Lattner | d3b9065 | 2008-03-15 05:43:15 +0000 | [diff] [blame] | 37 | //===----------------------------------------------------------------------===// |
Douglas Gregor | 4afa39d | 2009-01-20 01:17:11 +0000 | [diff] [blame] | 38 | // NamedDecl Implementation |
Argyrios Kyrtzidis | 5239304 | 2008-11-09 23:41:00 +0000 | [diff] [blame] | 39 | //===----------------------------------------------------------------------===// |
| 40 | |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 41 | // Visibility rules aren't rigorously externally specified, but here |
| 42 | // are the basic principles behind what we implement: |
| 43 | // |
| 44 | // 1. An explicit visibility attribute is generally a direct expression |
| 45 | // of the user's intent and should be honored. Only the innermost |
| 46 | // visibility attribute applies. If no visibility attribute applies, |
| 47 | // global visibility settings are considered. |
| 48 | // |
| 49 | // 2. There is one caveat to the above: on or in a template pattern, |
| 50 | // an explicit visibility attribute is just a default rule, and |
| 51 | // visibility can be decreased by the visibility of template |
| 52 | // arguments. But this, too, has an exception: an attribute on an |
| 53 | // explicit specialization or instantiation causes all the visibility |
| 54 | // restrictions of the template arguments to be ignored. |
| 55 | // |
| 56 | // 3. A variable that does not otherwise have explicit visibility can |
| 57 | // be restricted by the visibility of its type. |
| 58 | // |
| 59 | // 4. A visibility restriction is explicit if it comes from an |
| 60 | // attribute (or something like it), not a global visibility setting. |
| 61 | // When emitting a reference to an external symbol, visibility |
| 62 | // restrictions are ignored unless they are explicit. |
John McCall | d4c3d66 | 2013-02-20 01:54:26 +0000 | [diff] [blame] | 63 | // |
| 64 | // 5. When computing the visibility of a non-type, including a |
| 65 | // non-type member of a class, only non-type visibility restrictions |
| 66 | // are considered: the 'visibility' attribute, global value-visibility |
| 67 | // settings, and a few special cases like __private_extern. |
| 68 | // |
| 69 | // 6. When computing the visibility of a type, including a type member |
| 70 | // of a class, only type visibility restrictions are considered: |
| 71 | // the 'type_visibility' attribute and global type-visibility settings. |
| 72 | // However, a 'visibility' attribute counts as a 'type_visibility' |
| 73 | // attribute on any declaration that only has the former. |
| 74 | // |
| 75 | // The visibility of a "secondary" entity, like a template argument, |
| 76 | // is computed using the kind of that entity, not the kind of the |
| 77 | // primary entity for which we are computing visibility. For example, |
| 78 | // the visibility of a specialization of either of these templates: |
| 79 | // template <class T, bool (&compare)(T, X)> bool has_match(list<T>, X); |
| 80 | // template <class T, bool (&compare)(T, X)> class matcher; |
| 81 | // is restricted according to the type visibility of the argument 'T', |
| 82 | // the type visibility of 'bool(&)(T,X)', and the value visibility of |
| 83 | // the argument function 'compare'. That 'has_match' is a value |
| 84 | // and 'matcher' is a type only matters when looking for attributes |
| 85 | // and settings from the immediate context. |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 86 | |
John McCall | 3892d02 | 2013-02-21 23:42:58 +0000 | [diff] [blame] | 87 | const unsigned IgnoreExplicitVisibilityBit = 2; |
| 88 | |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 89 | /// Kinds of LV computation. The linkage side of the computation is |
| 90 | /// always the same, but different things can change how visibility is |
| 91 | /// computed. |
| 92 | enum LVComputationKind { |
John McCall | 3892d02 | 2013-02-21 23:42:58 +0000 | [diff] [blame] | 93 | /// Do an LV computation for, ultimately, a type. |
| 94 | /// Visibility may be restricted by type visibility settings and |
| 95 | /// the visibility of template arguments. |
John McCall | d4c3d66 | 2013-02-20 01:54:26 +0000 | [diff] [blame] | 96 | LVForType = NamedDecl::VisibilityForType, |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 97 | |
John McCall | 3892d02 | 2013-02-21 23:42:58 +0000 | [diff] [blame] | 98 | /// Do an LV computation for, ultimately, a non-type declaration. |
| 99 | /// Visibility may be restricted by value visibility settings and |
| 100 | /// the visibility of template arguments. |
John McCall | d4c3d66 | 2013-02-20 01:54:26 +0000 | [diff] [blame] | 101 | LVForValue = NamedDecl::VisibilityForValue, |
| 102 | |
John McCall | 3892d02 | 2013-02-21 23:42:58 +0000 | [diff] [blame] | 103 | /// Do an LV computation for, ultimately, a type that already has |
| 104 | /// some sort of explicit visibility. Visibility may only be |
| 105 | /// restricted by the visibility of template arguments. |
| 106 | LVForExplicitType = (LVForType | IgnoreExplicitVisibilityBit), |
John McCall | d4c3d66 | 2013-02-20 01:54:26 +0000 | [diff] [blame] | 107 | |
John McCall | 3892d02 | 2013-02-21 23:42:58 +0000 | [diff] [blame] | 108 | /// Do an LV computation for, ultimately, a non-type declaration |
| 109 | /// that already has some sort of explicit visibility. Visibility |
| 110 | /// may only be restricted by the visibility of template arguments. |
| 111 | LVForExplicitValue = (LVForValue | IgnoreExplicitVisibilityBit) |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 112 | }; |
| 113 | |
John McCall | d4c3d66 | 2013-02-20 01:54:26 +0000 | [diff] [blame] | 114 | /// Does this computation kind permit us to consider additional |
| 115 | /// visibility settings from attributes and the like? |
| 116 | static bool hasExplicitVisibilityAlready(LVComputationKind computation) { |
John McCall | 3892d02 | 2013-02-21 23:42:58 +0000 | [diff] [blame] | 117 | return ((unsigned(computation) & IgnoreExplicitVisibilityBit) != 0); |
John McCall | d4c3d66 | 2013-02-20 01:54:26 +0000 | [diff] [blame] | 118 | } |
| 119 | |
| 120 | /// Given an LVComputationKind, return one of the same type/value sort |
| 121 | /// that records that it already has explicit visibility. |
| 122 | static LVComputationKind |
| 123 | withExplicitVisibilityAlready(LVComputationKind oldKind) { |
| 124 | LVComputationKind newKind = |
John McCall | 3892d02 | 2013-02-21 23:42:58 +0000 | [diff] [blame] | 125 | static_cast<LVComputationKind>(unsigned(oldKind) | |
| 126 | IgnoreExplicitVisibilityBit); |
John McCall | d4c3d66 | 2013-02-20 01:54:26 +0000 | [diff] [blame] | 127 | assert(oldKind != LVForType || newKind == LVForExplicitType); |
| 128 | assert(oldKind != LVForValue || newKind == LVForExplicitValue); |
| 129 | assert(oldKind != LVForExplicitType || newKind == LVForExplicitType); |
| 130 | assert(oldKind != LVForExplicitValue || newKind == LVForExplicitValue); |
| 131 | return newKind; |
| 132 | } |
| 133 | |
David Blaikie | dc84cd5 | 2013-02-20 22:23:23 +0000 | [diff] [blame] | 134 | static Optional<Visibility> getExplicitVisibility(const NamedDecl *D, |
| 135 | LVComputationKind kind) { |
John McCall | d4c3d66 | 2013-02-20 01:54:26 +0000 | [diff] [blame] | 136 | assert(!hasExplicitVisibilityAlready(kind) && |
| 137 | "asking for explicit visibility when we shouldn't be"); |
| 138 | return D->getExplicitVisibility((NamedDecl::ExplicitVisibilityKind) kind); |
| 139 | } |
| 140 | |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 141 | /// Is the given declaration a "type" or a "value" for the purposes of |
| 142 | /// visibility computation? |
| 143 | static bool usesTypeVisibility(const NamedDecl *D) { |
John McCall | a880b19 | 2013-02-19 01:57:35 +0000 | [diff] [blame] | 144 | return isa<TypeDecl>(D) || |
| 145 | isa<ClassTemplateDecl>(D) || |
| 146 | isa<ObjCInterfaceDecl>(D); |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 147 | } |
| 148 | |
John McCall | 3892d02 | 2013-02-21 23:42:58 +0000 | [diff] [blame] | 149 | /// Does the given declaration have member specialization information, |
| 150 | /// and if so, is it an explicit specialization? |
| 151 | template <class T> static typename |
| 152 | llvm::enable_if_c<!llvm::is_base_of<RedeclarableTemplateDecl, T>::value, |
| 153 | bool>::type |
| 154 | isExplicitMemberSpecialization(const T *D) { |
| 155 | if (const MemberSpecializationInfo *member = |
| 156 | D->getMemberSpecializationInfo()) { |
| 157 | return member->isExplicitSpecialization(); |
| 158 | } |
| 159 | return false; |
| 160 | } |
| 161 | |
| 162 | /// For templates, this question is easier: a member template can't be |
| 163 | /// explicitly instantiated, so there's a single bit indicating whether |
| 164 | /// or not this is an explicit member specialization. |
| 165 | static bool isExplicitMemberSpecialization(const RedeclarableTemplateDecl *D) { |
| 166 | return D->isMemberSpecialization(); |
| 167 | } |
| 168 | |
John McCall | d4c3d66 | 2013-02-20 01:54:26 +0000 | [diff] [blame] | 169 | /// Given a visibility attribute, return the explicit visibility |
| 170 | /// associated with it. |
| 171 | template <class T> |
| 172 | static Visibility getVisibilityFromAttr(const T *attr) { |
| 173 | switch (attr->getVisibility()) { |
| 174 | case T::Default: |
| 175 | return DefaultVisibility; |
| 176 | case T::Hidden: |
| 177 | return HiddenVisibility; |
| 178 | case T::Protected: |
| 179 | return ProtectedVisibility; |
| 180 | } |
| 181 | llvm_unreachable("bad visibility kind"); |
| 182 | } |
| 183 | |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 184 | /// Return the explicit visibility of the given declaration. |
David Blaikie | dc84cd5 | 2013-02-20 22:23:23 +0000 | [diff] [blame] | 185 | static Optional<Visibility> getVisibilityOf(const NamedDecl *D, |
John McCall | d4c3d66 | 2013-02-20 01:54:26 +0000 | [diff] [blame] | 186 | NamedDecl::ExplicitVisibilityKind kind) { |
| 187 | // If we're ultimately computing the visibility of a type, look for |
| 188 | // a 'type_visibility' attribute before looking for 'visibility'. |
| 189 | if (kind == NamedDecl::VisibilityForType) { |
| 190 | if (const TypeVisibilityAttr *A = D->getAttr<TypeVisibilityAttr>()) { |
| 191 | return getVisibilityFromAttr(A); |
| 192 | } |
| 193 | } |
| 194 | |
Douglas Gregor | 4421d2b | 2011-03-26 12:10:19 +0000 | [diff] [blame] | 195 | // If this declaration has an explicit visibility attribute, use it. |
| 196 | if (const VisibilityAttr *A = D->getAttr<VisibilityAttr>()) { |
John McCall | d4c3d66 | 2013-02-20 01:54:26 +0000 | [diff] [blame] | 197 | return getVisibilityFromAttr(A); |
John McCall | 1fb0caa | 2010-10-22 21:05:15 +0000 | [diff] [blame] | 198 | } |
Douglas Gregor | 4421d2b | 2011-03-26 12:10:19 +0000 | [diff] [blame] | 199 | |
| 200 | // If we're on Mac OS X, an 'availability' for Mac OS X attribute |
| 201 | // implies visibility(default). |
Douglas Gregor | bcfd1f5 | 2011-09-02 00:18:52 +0000 | [diff] [blame] | 202 | if (D->getASTContext().getTargetInfo().getTriple().isOSDarwin()) { |
Douglas Gregor | 4421d2b | 2011-03-26 12:10:19 +0000 | [diff] [blame] | 203 | for (specific_attr_iterator<AvailabilityAttr> |
| 204 | A = D->specific_attr_begin<AvailabilityAttr>(), |
| 205 | AEnd = D->specific_attr_end<AvailabilityAttr>(); |
| 206 | A != AEnd; ++A) |
| 207 | if ((*A)->getPlatform()->getName().equals("macosx")) |
| 208 | return DefaultVisibility; |
| 209 | } |
| 210 | |
David Blaikie | 66874fb | 2013-02-21 01:47:18 +0000 | [diff] [blame] | 211 | return None; |
John McCall | 1fb0caa | 2010-10-22 21:05:15 +0000 | [diff] [blame] | 212 | } |
| 213 | |
Douglas Gregor | 0b6bc8b | 2010-02-03 09:33:45 +0000 | [diff] [blame] | 214 | /// \brief Get the most restrictive linkage for the types in the given |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 215 | /// template parameter list. For visibility purposes, template |
| 216 | /// parameters are part of the signature of a template. |
Rafael Espindola | 093ecc9 | 2012-01-14 00:30:36 +0000 | [diff] [blame] | 217 | static LinkageInfo |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 218 | getLVForTemplateParameterList(const TemplateParameterList *params) { |
| 219 | LinkageInfo LV; |
| 220 | for (TemplateParameterList::const_iterator P = params->begin(), |
| 221 | PEnd = params->end(); |
Douglas Gregor | 0b6bc8b | 2010-02-03 09:33:45 +0000 | [diff] [blame] | 222 | P != PEnd; ++P) { |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 223 | |
| 224 | // Template type parameters are the most common and never |
| 225 | // contribute to visibility, pack or not. |
| 226 | if (isa<TemplateTypeParmDecl>(*P)) |
| 227 | continue; |
| 228 | |
| 229 | // Non-type template parameters can be restricted by the value type, e.g. |
| 230 | // template <enum X> class A { ... }; |
| 231 | // We have to be careful here, though, because we can be dealing with |
| 232 | // dependent types. |
Douglas Gregor | 6952f1e | 2011-01-19 20:10:05 +0000 | [diff] [blame] | 233 | if (NonTypeTemplateParmDecl *NTTP = dyn_cast<NonTypeTemplateParmDecl>(*P)) { |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 234 | // Handle the non-pack case first. |
| 235 | if (!NTTP->isExpandedParameterPack()) { |
| 236 | if (!NTTP->getType()->isDependentType()) { |
Rafael Espindola | 18895dc | 2013-02-27 02:27:19 +0000 | [diff] [blame] | 237 | LV.merge(NTTP->getType()->getLinkageAndVisibility()); |
Douglas Gregor | 6952f1e | 2011-01-19 20:10:05 +0000 | [diff] [blame] | 238 | } |
| 239 | continue; |
| 240 | } |
Rafael Espindola | b5d763d | 2012-01-02 06:26:22 +0000 | [diff] [blame] | 241 | |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 242 | // Look at all the types in an expanded pack. |
| 243 | for (unsigned i = 0, n = NTTP->getNumExpansionTypes(); i != n; ++i) { |
| 244 | QualType type = NTTP->getExpansionType(i); |
| 245 | if (!type->isDependentType()) |
Rafael Espindola | 18895dc | 2013-02-27 02:27:19 +0000 | [diff] [blame] | 246 | LV.merge(type->getLinkageAndVisibility()); |
Douglas Gregor | 0b6bc8b | 2010-02-03 09:33:45 +0000 | [diff] [blame] | 247 | } |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 248 | continue; |
Douglas Gregor | 6952f1e | 2011-01-19 20:10:05 +0000 | [diff] [blame] | 249 | } |
Douglas Gregor | 0b6bc8b | 2010-02-03 09:33:45 +0000 | [diff] [blame] | 250 | |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 251 | // Template template parameters can be restricted by their |
| 252 | // template parameters, recursively. |
| 253 | TemplateTemplateParmDecl *TTP = cast<TemplateTemplateParmDecl>(*P); |
| 254 | |
| 255 | // Handle the non-pack case first. |
| 256 | if (!TTP->isExpandedParameterPack()) { |
Rafael Espindola | 093ecc9 | 2012-01-14 00:30:36 +0000 | [diff] [blame] | 257 | LV.merge(getLVForTemplateParameterList(TTP->getTemplateParameters())); |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 258 | continue; |
| 259 | } |
| 260 | |
| 261 | // Look at all expansions in an expanded pack. |
| 262 | for (unsigned i = 0, n = TTP->getNumExpansionTemplateParameters(); |
| 263 | i != n; ++i) { |
| 264 | LV.merge(getLVForTemplateParameterList( |
| 265 | TTP->getExpansionTemplateParameters(i))); |
Douglas Gregor | 0b6bc8b | 2010-02-03 09:33:45 +0000 | [diff] [blame] | 266 | } |
| 267 | } |
| 268 | |
John McCall | 1fb0caa | 2010-10-22 21:05:15 +0000 | [diff] [blame] | 269 | return LV; |
Douglas Gregor | 0b6bc8b | 2010-02-03 09:33:45 +0000 | [diff] [blame] | 270 | } |
| 271 | |
Rafael Espindola | 838dc59 | 2013-01-12 06:42:30 +0000 | [diff] [blame] | 272 | /// getLVForDecl - Get the linkage and visibility for the given declaration. |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 273 | static LinkageInfo getLVForDecl(const NamedDecl *D, |
| 274 | LVComputationKind computation); |
Douglas Gregor | 381d34e | 2010-12-06 18:36:25 +0000 | [diff] [blame] | 275 | |
Douglas Gregor | 0b6bc8b | 2010-02-03 09:33:45 +0000 | [diff] [blame] | 276 | /// \brief Get the most restrictive linkage for the types and |
| 277 | /// declarations in the given template argument list. |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 278 | /// |
| 279 | /// Note that we don't take an LVComputationKind because we always |
| 280 | /// want to honor the visibility of template arguments in the same way. |
| 281 | static LinkageInfo |
| 282 | getLVForTemplateArgumentList(ArrayRef<TemplateArgument> args) { |
| 283 | LinkageInfo LV; |
Douglas Gregor | 0b6bc8b | 2010-02-03 09:33:45 +0000 | [diff] [blame] | 284 | |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 285 | for (unsigned i = 0, e = args.size(); i != e; ++i) { |
| 286 | const TemplateArgument &arg = args[i]; |
| 287 | switch (arg.getKind()) { |
Douglas Gregor | 0b6bc8b | 2010-02-03 09:33:45 +0000 | [diff] [blame] | 288 | case TemplateArgument::Null: |
| 289 | case TemplateArgument::Integral: |
| 290 | case TemplateArgument::Expression: |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 291 | continue; |
Rafael Espindola | b5d763d | 2012-01-02 06:26:22 +0000 | [diff] [blame] | 292 | |
Douglas Gregor | 0b6bc8b | 2010-02-03 09:33:45 +0000 | [diff] [blame] | 293 | case TemplateArgument::Type: |
Rafael Espindola | 18895dc | 2013-02-27 02:27:19 +0000 | [diff] [blame] | 294 | LV.merge(arg.getAsType()->getLinkageAndVisibility()); |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 295 | continue; |
Douglas Gregor | 0b6bc8b | 2010-02-03 09:33:45 +0000 | [diff] [blame] | 296 | |
| 297 | case TemplateArgument::Declaration: |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 298 | if (NamedDecl *ND = dyn_cast<NamedDecl>(arg.getAsDecl())) { |
| 299 | assert(!usesTypeVisibility(ND)); |
| 300 | LV.merge(getLVForDecl(ND, LVForValue)); |
| 301 | } |
| 302 | continue; |
Eli Friedman | d7a6b16 | 2012-09-26 02:36:12 +0000 | [diff] [blame] | 303 | |
| 304 | case TemplateArgument::NullPtr: |
Rafael Espindola | 18895dc | 2013-02-27 02:27:19 +0000 | [diff] [blame] | 305 | LV.merge(arg.getNullPtrType()->getLinkageAndVisibility()); |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 306 | continue; |
Douglas Gregor | 0b6bc8b | 2010-02-03 09:33:45 +0000 | [diff] [blame] | 307 | |
| 308 | case TemplateArgument::Template: |
Douglas Gregor | a7fc901 | 2011-01-05 18:58:31 +0000 | [diff] [blame] | 309 | case TemplateArgument::TemplateExpansion: |
Rafael Espindola | b5d763d | 2012-01-02 06:26:22 +0000 | [diff] [blame] | 310 | if (TemplateDecl *Template |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 311 | = arg.getAsTemplateOrTemplatePattern().getAsTemplateDecl()) |
| 312 | LV.merge(getLVForDecl(Template, LVForValue)); |
| 313 | continue; |
Douglas Gregor | 0b6bc8b | 2010-02-03 09:33:45 +0000 | [diff] [blame] | 314 | |
| 315 | case TemplateArgument::Pack: |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 316 | LV.merge(getLVForTemplateArgumentList(arg.getPackAsArray())); |
| 317 | continue; |
Douglas Gregor | 0b6bc8b | 2010-02-03 09:33:45 +0000 | [diff] [blame] | 318 | } |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 319 | llvm_unreachable("bad template argument kind"); |
Douglas Gregor | 0b6bc8b | 2010-02-03 09:33:45 +0000 | [diff] [blame] | 320 | } |
| 321 | |
John McCall | 1fb0caa | 2010-10-22 21:05:15 +0000 | [diff] [blame] | 322 | return LV; |
Douglas Gregor | 0b6bc8b | 2010-02-03 09:33:45 +0000 | [diff] [blame] | 323 | } |
| 324 | |
Rafael Espindola | 093ecc9 | 2012-01-14 00:30:36 +0000 | [diff] [blame] | 325 | static LinkageInfo |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 326 | getLVForTemplateArgumentList(const TemplateArgumentList &TArgs) { |
| 327 | return getLVForTemplateArgumentList(TArgs.asArray()); |
John McCall | 3cdfc4d | 2010-08-13 08:35:10 +0000 | [diff] [blame] | 328 | } |
| 329 | |
John McCall | 3892d02 | 2013-02-21 23:42:58 +0000 | [diff] [blame] | 330 | static bool shouldConsiderTemplateVisibility(const FunctionDecl *fn, |
| 331 | const FunctionTemplateSpecializationInfo *specInfo) { |
| 332 | // Include visibility from the template parameters and arguments |
| 333 | // only if this is not an explicit instantiation or specialization |
| 334 | // with direct explicit visibility. (Implicit instantiations won't |
| 335 | // have a direct attribute.) |
| 336 | if (!specInfo->isExplicitInstantiationOrSpecialization()) |
| 337 | return true; |
| 338 | |
| 339 | return !fn->hasAttr<VisibilityAttr>(); |
| 340 | } |
| 341 | |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 342 | /// Merge in template-related linkage and visibility for the given |
| 343 | /// function template specialization. |
| 344 | /// |
| 345 | /// We don't need a computation kind here because we can assume |
| 346 | /// LVForValue. |
John McCall | 3892d02 | 2013-02-21 23:42:58 +0000 | [diff] [blame] | 347 | /// |
NAKAMURA Takumi | d9bd83e | 2013-02-22 04:06:28 +0000 | [diff] [blame] | 348 | /// \param[out] LV the computation to use for the parent |
John McCall | 3892d02 | 2013-02-21 23:42:58 +0000 | [diff] [blame] | 349 | static void |
| 350 | mergeTemplateLV(LinkageInfo &LV, const FunctionDecl *fn, |
| 351 | const FunctionTemplateSpecializationInfo *specInfo) { |
| 352 | bool considerVisibility = |
| 353 | shouldConsiderTemplateVisibility(fn, specInfo); |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 354 | |
| 355 | // Merge information from the template parameters. |
John McCall | 3892d02 | 2013-02-21 23:42:58 +0000 | [diff] [blame] | 356 | FunctionTemplateDecl *temp = specInfo->getTemplate(); |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 357 | LinkageInfo tempLV = |
| 358 | getLVForTemplateParameterList(temp->getTemplateParameters()); |
| 359 | LV.mergeMaybeWithVisibility(tempLV, considerVisibility); |
| 360 | |
| 361 | // Merge information from the template arguments. |
| 362 | const TemplateArgumentList &templateArgs = *specInfo->TemplateArguments; |
| 363 | LinkageInfo argsLV = getLVForTemplateArgumentList(templateArgs); |
| 364 | LV.mergeMaybeWithVisibility(argsLV, considerVisibility); |
John McCall | 6ce51ee | 2011-06-27 23:06:04 +0000 | [diff] [blame] | 365 | } |
| 366 | |
John McCall | 3892d02 | 2013-02-21 23:42:58 +0000 | [diff] [blame] | 367 | /// Does the given declaration have a direct visibility attribute |
| 368 | /// that would match the given rules? |
| 369 | static bool hasDirectVisibilityAttribute(const NamedDecl *D, |
| 370 | LVComputationKind computation) { |
| 371 | switch (computation) { |
| 372 | case LVForType: |
| 373 | case LVForExplicitType: |
| 374 | if (D->hasAttr<TypeVisibilityAttr>()) |
| 375 | return true; |
| 376 | // fallthrough |
| 377 | case LVForValue: |
| 378 | case LVForExplicitValue: |
| 379 | if (D->hasAttr<VisibilityAttr>()) |
| 380 | return true; |
| 381 | return false; |
| 382 | } |
| 383 | llvm_unreachable("bad visibility computation kind"); |
| 384 | } |
| 385 | |
John McCall | d4c3d66 | 2013-02-20 01:54:26 +0000 | [diff] [blame] | 386 | /// Should we consider visibility associated with the template |
| 387 | /// arguments and parameters of the given class template specialization? |
| 388 | static bool shouldConsiderTemplateVisibility( |
| 389 | const ClassTemplateSpecializationDecl *spec, |
| 390 | LVComputationKind computation) { |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 391 | // Include visibility from the template parameters and arguments |
| 392 | // only if this is not an explicit instantiation or specialization |
| 393 | // with direct explicit visibility (and note that implicit |
| 394 | // instantiations won't have a direct attribute). |
| 395 | // |
| 396 | // Furthermore, we want to ignore template parameters and arguments |
John McCall | d4c3d66 | 2013-02-20 01:54:26 +0000 | [diff] [blame] | 397 | // for an explicit specialization when computing the visibility of a |
| 398 | // member thereof with explicit visibility. |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 399 | // |
| 400 | // This is a bit complex; let's unpack it. |
| 401 | // |
| 402 | // An explicit class specialization is an independent, top-level |
| 403 | // declaration. As such, if it or any of its members has an |
| 404 | // explicit visibility attribute, that must directly express the |
| 405 | // user's intent, and we should honor it. The same logic applies to |
| 406 | // an explicit instantiation of a member of such a thing. |
John McCall | d4c3d66 | 2013-02-20 01:54:26 +0000 | [diff] [blame] | 407 | |
| 408 | // Fast path: if this is not an explicit instantiation or |
| 409 | // specialization, we always want to consider template-related |
| 410 | // visibility restrictions. |
| 411 | if (!spec->isExplicitInstantiationOrSpecialization()) |
| 412 | return true; |
| 413 | |
| 414 | // This is the 'member thereof' check. |
| 415 | if (spec->isExplicitSpecialization() && |
| 416 | hasExplicitVisibilityAlready(computation)) |
| 417 | return false; |
| 418 | |
John McCall | 3892d02 | 2013-02-21 23:42:58 +0000 | [diff] [blame] | 419 | return !hasDirectVisibilityAttribute(spec, computation); |
John McCall | d4c3d66 | 2013-02-20 01:54:26 +0000 | [diff] [blame] | 420 | } |
| 421 | |
| 422 | /// Merge in template-related linkage and visibility for the given |
| 423 | /// class template specialization. |
| 424 | static void mergeTemplateLV(LinkageInfo &LV, |
| 425 | const ClassTemplateSpecializationDecl *spec, |
| 426 | LVComputationKind computation) { |
| 427 | bool considerVisibility = shouldConsiderTemplateVisibility(spec, computation); |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 428 | |
| 429 | // Merge information from the template parameters, but ignore |
| 430 | // visibility if we're only considering template arguments. |
| 431 | |
John McCall | d4c3d66 | 2013-02-20 01:54:26 +0000 | [diff] [blame] | 432 | ClassTemplateDecl *temp = spec->getSpecializedTemplate(); |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 433 | LinkageInfo tempLV = |
| 434 | getLVForTemplateParameterList(temp->getTemplateParameters()); |
| 435 | LV.mergeMaybeWithVisibility(tempLV, |
John McCall | d4c3d66 | 2013-02-20 01:54:26 +0000 | [diff] [blame] | 436 | considerVisibility && !hasExplicitVisibilityAlready(computation)); |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 437 | |
| 438 | // Merge information from the template arguments. We ignore |
| 439 | // template-argument visibility if we've got an explicit |
| 440 | // instantiation with a visibility attribute. |
| 441 | const TemplateArgumentList &templateArgs = spec->getTemplateArgs(); |
| 442 | LinkageInfo argsLV = getLVForTemplateArgumentList(templateArgs); |
| 443 | LV.mergeMaybeWithVisibility(argsLV, considerVisibility); |
John McCall | 6ce51ee | 2011-06-27 23:06:04 +0000 | [diff] [blame] | 444 | } |
| 445 | |
Rafael Espindola | b04b731 | 2012-07-13 14:25:36 +0000 | [diff] [blame] | 446 | static bool useInlineVisibilityHidden(const NamedDecl *D) { |
| 447 | // FIXME: we should warn if -fvisibility-inlines-hidden is used with c. |
Rafael Espindola | 0bab9da | 2012-07-13 23:26:43 +0000 | [diff] [blame] | 448 | const LangOptions &Opts = D->getASTContext().getLangOpts(); |
| 449 | if (!Opts.CPlusPlus || !Opts.InlineVisibilityHidden) |
Rafael Espindola | b04b731 | 2012-07-13 14:25:36 +0000 | [diff] [blame] | 450 | return false; |
| 451 | |
| 452 | const FunctionDecl *FD = dyn_cast<FunctionDecl>(D); |
| 453 | if (!FD) |
| 454 | return false; |
| 455 | |
| 456 | TemplateSpecializationKind TSK = TSK_Undeclared; |
| 457 | if (FunctionTemplateSpecializationInfo *spec |
| 458 | = FD->getTemplateSpecializationInfo()) { |
| 459 | TSK = spec->getTemplateSpecializationKind(); |
| 460 | } else if (MemberSpecializationInfo *MSI = |
| 461 | FD->getMemberSpecializationInfo()) { |
| 462 | TSK = MSI->getTemplateSpecializationKind(); |
| 463 | } |
| 464 | |
| 465 | const FunctionDecl *Def = 0; |
| 466 | // InlineVisibilityHidden only applies to definitions, and |
| 467 | // isInlined() only gives meaningful answers on definitions |
| 468 | // anyway. |
| 469 | return TSK != TSK_ExplicitInstantiationDeclaration && |
| 470 | TSK != TSK_ExplicitInstantiationDefinition && |
Rafael Espindola | 0142f0c | 2012-10-11 16:32:25 +0000 | [diff] [blame] | 471 | FD->hasBody(Def) && Def->isInlined() && !Def->hasAttr<GNUInlineAttr>(); |
Rafael Espindola | b04b731 | 2012-07-13 14:25:36 +0000 | [diff] [blame] | 472 | } |
| 473 | |
Rafael Espindola | d8ffd0b | 2013-05-05 20:15:21 +0000 | [diff] [blame] | 474 | template <typename T> static bool isFirstInExternCContext(T *D) { |
Rafael Espindola | 950fee2 | 2013-02-14 01:18:37 +0000 | [diff] [blame] | 475 | const T *First = D->getFirstDeclaration(); |
Rafael Espindola | d8ffd0b | 2013-05-05 20:15:21 +0000 | [diff] [blame] | 476 | return First->isInExternCContext(); |
Rafael Espindola | 950fee2 | 2013-02-14 01:18:37 +0000 | [diff] [blame] | 477 | } |
| 478 | |
Rafael Espindola | e5e575d | 2013-04-26 01:30:23 +0000 | [diff] [blame] | 479 | static bool isSingleLineExternC(const Decl &D) { |
| 480 | if (const LinkageSpecDecl *SD = dyn_cast<LinkageSpecDecl>(D.getDeclContext())) |
| 481 | if (SD->getLanguage() == LinkageSpecDecl::lang_c && !SD->hasBraces()) |
| 482 | return true; |
| 483 | return false; |
| 484 | } |
| 485 | |
Rafael Espindola | 181e3ec | 2013-05-13 00:12:11 +0000 | [diff] [blame] | 486 | static bool isExternalLinkage(Linkage L) { |
| 487 | return L == UniqueExternalLinkage || L == ExternalLinkage; |
| 488 | } |
| 489 | |
Rafael Espindola | 1266b61 | 2012-04-21 23:28:21 +0000 | [diff] [blame] | 490 | static LinkageInfo getLVForNamespaceScopeDecl(const NamedDecl *D, |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 491 | LVComputationKind computation) { |
Sebastian Redl | 7a126a4 | 2010-08-31 00:36:30 +0000 | [diff] [blame] | 492 | assert(D->getDeclContext()->getRedeclContext()->isFileContext() && |
Douglas Gregor | d85b5b9 | 2009-11-25 22:24:25 +0000 | [diff] [blame] | 493 | "Not a name having namespace scope"); |
| 494 | ASTContext &Context = D->getASTContext(); |
| 495 | |
| 496 | // C++ [basic.link]p3: |
| 497 | // A name having namespace scope (3.3.6) has internal linkage if it |
| 498 | // is the name of |
| 499 | // - an object, reference, function or function template that is |
| 500 | // explicitly declared static; or, |
| 501 | // (This bullet corresponds to C99 6.2.2p3.) |
| 502 | if (const VarDecl *Var = dyn_cast<VarDecl>(D)) { |
| 503 | // Explicitly declared static. |
John McCall | d931b08 | 2010-08-26 03:08:43 +0000 | [diff] [blame] | 504 | if (Var->getStorageClass() == SC_Static) |
John McCall | af14603 | 2010-10-30 11:50:40 +0000 | [diff] [blame] | 505 | return LinkageInfo::internal(); |
Douglas Gregor | d85b5b9 | 2009-11-25 22:24:25 +0000 | [diff] [blame] | 506 | |
Richard Smith | 820e9a7 | 2012-10-19 06:37:48 +0000 | [diff] [blame] | 507 | // - a non-volatile object or reference that is explicitly declared const |
| 508 | // or constexpr and neither explicitly declared extern nor previously |
| 509 | // declared to have external linkage; or (there is no equivalent in C99) |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 510 | if (Context.getLangOpts().CPlusPlus && |
Richard Smith | 820e9a7 | 2012-10-19 06:37:48 +0000 | [diff] [blame] | 511 | Var->getType().isConstQualified() && |
Rafael Espindola | d2615cc | 2013-04-03 19:27:57 +0000 | [diff] [blame] | 512 | !Var->getType().isVolatileQualified()) { |
Rafael Espindola | 4f8a3eb | 2013-04-03 19:22:20 +0000 | [diff] [blame] | 513 | const VarDecl *PrevVar = Var->getPreviousDecl(); |
Rafael Espindola | 4f8a3eb | 2013-04-03 19:22:20 +0000 | [diff] [blame] | 514 | if (PrevVar) |
Rafael Espindola | 8f187f6 | 2013-04-03 15:50:00 +0000 | [diff] [blame] | 515 | return PrevVar->getLinkageAndVisibility(); |
Rafael Espindola | d2615cc | 2013-04-03 19:27:57 +0000 | [diff] [blame] | 516 | |
| 517 | if (Var->getStorageClass() != SC_Extern && |
Rafael Espindola | e5e575d | 2013-04-26 01:30:23 +0000 | [diff] [blame] | 518 | Var->getStorageClass() != SC_PrivateExtern && |
| 519 | !isSingleLineExternC(*Var)) |
Rafael Espindola | d2615cc | 2013-04-03 19:27:57 +0000 | [diff] [blame] | 520 | return LinkageInfo::internal(); |
| 521 | } |
| 522 | |
| 523 | for (const VarDecl *PrevVar = Var->getPreviousDecl(); PrevVar; |
| 524 | PrevVar = PrevVar->getPreviousDecl()) { |
| 525 | if (PrevVar->getStorageClass() == SC_PrivateExtern && |
| 526 | Var->getStorageClass() == SC_None) |
| 527 | return PrevVar->getLinkageAndVisibility(); |
| 528 | // Explicitly declared static. |
| 529 | if (PrevVar->getStorageClass() == SC_Static) |
| 530 | return LinkageInfo::internal(); |
Fariborz Jahanian | c7c9058 | 2011-06-16 20:14:50 +0000 | [diff] [blame] | 531 | } |
Douglas Gregor | d85b5b9 | 2009-11-25 22:24:25 +0000 | [diff] [blame] | 532 | } else if (isa<FunctionDecl>(D) || isa<FunctionTemplateDecl>(D)) { |
Douglas Gregor | 0b6bc8b | 2010-02-03 09:33:45 +0000 | [diff] [blame] | 533 | // C++ [temp]p4: |
| 534 | // A non-member function template can have internal linkage; any |
| 535 | // other template name shall have external linkage. |
Douglas Gregor | d85b5b9 | 2009-11-25 22:24:25 +0000 | [diff] [blame] | 536 | const FunctionDecl *Function = 0; |
| 537 | if (const FunctionTemplateDecl *FunTmpl |
| 538 | = dyn_cast<FunctionTemplateDecl>(D)) |
| 539 | Function = FunTmpl->getTemplatedDecl(); |
| 540 | else |
| 541 | Function = cast<FunctionDecl>(D); |
| 542 | |
| 543 | // Explicitly declared static. |
Rafael Espindola | d2615cc | 2013-04-03 19:27:57 +0000 | [diff] [blame] | 544 | if (Function->getCanonicalDecl()->getStorageClass() == SC_Static) |
John McCall | af14603 | 2010-10-30 11:50:40 +0000 | [diff] [blame] | 545 | return LinkageInfo(InternalLinkage, DefaultVisibility, false); |
Douglas Gregor | d85b5b9 | 2009-11-25 22:24:25 +0000 | [diff] [blame] | 546 | } else if (const FieldDecl *Field = dyn_cast<FieldDecl>(D)) { |
| 547 | // - a data member of an anonymous union. |
| 548 | if (cast<RecordDecl>(Field->getDeclContext())->isAnonymousStructOrUnion()) |
John McCall | af14603 | 2010-10-30 11:50:40 +0000 | [diff] [blame] | 549 | return LinkageInfo::internal(); |
Douglas Gregor | d85b5b9 | 2009-11-25 22:24:25 +0000 | [diff] [blame] | 550 | } |
| 551 | |
Chandler Carruth | 094b643 | 2011-02-24 19:03:39 +0000 | [diff] [blame] | 552 | if (D->isInAnonymousNamespace()) { |
| 553 | const VarDecl *Var = dyn_cast<VarDecl>(D); |
| 554 | const FunctionDecl *Func = dyn_cast<FunctionDecl>(D); |
Rafael Espindola | d8ffd0b | 2013-05-05 20:15:21 +0000 | [diff] [blame] | 555 | if ((!Var || !isFirstInExternCContext(Var)) && |
| 556 | (!Func || !isFirstInExternCContext(Func))) |
Chandler Carruth | 094b643 | 2011-02-24 19:03:39 +0000 | [diff] [blame] | 557 | return LinkageInfo::uniqueExternal(); |
| 558 | } |
John McCall | e7bc972 | 2010-10-28 04:18:25 +0000 | [diff] [blame] | 559 | |
John McCall | 1fb0caa | 2010-10-22 21:05:15 +0000 | [diff] [blame] | 560 | // Set up the defaults. |
| 561 | |
| 562 | // C99 6.2.2p5: |
| 563 | // If the declaration of an identifier for an object has file |
| 564 | // scope and no storage-class specifier, its linkage is |
| 565 | // external. |
John McCall | af14603 | 2010-10-30 11:50:40 +0000 | [diff] [blame] | 566 | LinkageInfo LV; |
| 567 | |
John McCall | d4c3d66 | 2013-02-20 01:54:26 +0000 | [diff] [blame] | 568 | if (!hasExplicitVisibilityAlready(computation)) { |
David Blaikie | dc84cd5 | 2013-02-20 22:23:23 +0000 | [diff] [blame] | 569 | if (Optional<Visibility> Vis = getExplicitVisibility(D, computation)) { |
Rafael Espindola | 5727cf5 | 2012-04-19 02:22:07 +0000 | [diff] [blame] | 570 | LV.mergeVisibility(*Vis, true); |
Rafael Espindola | e9836a2 | 2012-04-16 18:46:26 +0000 | [diff] [blame] | 571 | } else { |
| 572 | // If we're declared in a namespace with a visibility attribute, |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 573 | // use that namespace's visibility, and it still counts as explicit. |
Rafael Espindola | e9836a2 | 2012-04-16 18:46:26 +0000 | [diff] [blame] | 574 | for (const DeclContext *DC = D->getDeclContext(); |
| 575 | !isa<TranslationUnitDecl>(DC); |
| 576 | DC = DC->getParent()) { |
| 577 | const NamespaceDecl *ND = dyn_cast<NamespaceDecl>(DC); |
| 578 | if (!ND) continue; |
David Blaikie | dc84cd5 | 2013-02-20 22:23:23 +0000 | [diff] [blame] | 579 | if (Optional<Visibility> Vis = getExplicitVisibility(ND, computation)) { |
Rafael Espindola | 5727cf5 | 2012-04-19 02:22:07 +0000 | [diff] [blame] | 580 | LV.mergeVisibility(*Vis, true); |
Rafael Espindola | e9836a2 | 2012-04-16 18:46:26 +0000 | [diff] [blame] | 581 | break; |
| 582 | } |
| 583 | } |
| 584 | } |
Rafael Espindola | e9836a2 | 2012-04-16 18:46:26 +0000 | [diff] [blame] | 585 | |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 586 | // Add in global settings if the above didn't give us direct visibility. |
Rafael Espindola | f127eb8 | 2013-02-27 02:56:45 +0000 | [diff] [blame] | 587 | if (!LV.isVisibilityExplicit()) { |
John McCall | a880b19 | 2013-02-19 01:57:35 +0000 | [diff] [blame] | 588 | // Use global type/value visibility as appropriate. |
| 589 | Visibility globalVisibility; |
| 590 | if (computation == LVForValue) { |
| 591 | globalVisibility = Context.getLangOpts().getValueVisibilityMode(); |
| 592 | } else { |
| 593 | assert(computation == LVForType); |
| 594 | globalVisibility = Context.getLangOpts().getTypeVisibilityMode(); |
| 595 | } |
| 596 | LV.mergeVisibility(globalVisibility, /*explicit*/ false); |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 597 | |
| 598 | // If we're paying attention to global visibility, apply |
| 599 | // -finline-visibility-hidden if this is an inline method. |
| 600 | if (useInlineVisibilityHidden(D)) |
| 601 | LV.mergeVisibility(HiddenVisibility, true); |
| 602 | } |
Rafael Espindola | b04b731 | 2012-07-13 14:25:36 +0000 | [diff] [blame] | 603 | } |
Rafael Espindola | ff25798 | 2012-04-19 02:55:01 +0000 | [diff] [blame] | 604 | |
Douglas Gregor | d85b5b9 | 2009-11-25 22:24:25 +0000 | [diff] [blame] | 605 | // C++ [basic.link]p4: |
John McCall | 1fb0caa | 2010-10-22 21:05:15 +0000 | [diff] [blame] | 606 | |
Douglas Gregor | d85b5b9 | 2009-11-25 22:24:25 +0000 | [diff] [blame] | 607 | // A name having namespace scope has external linkage if it is the |
| 608 | // name of |
| 609 | // |
| 610 | // - an object or reference, unless it has internal linkage; or |
| 611 | if (const VarDecl *Var = dyn_cast<VarDecl>(D)) { |
John McCall | 110e8e5 | 2010-10-29 22:22:43 +0000 | [diff] [blame] | 612 | // GCC applies the following optimization to variables and static |
| 613 | // data members, but not to functions: |
| 614 | // |
John McCall | 1fb0caa | 2010-10-22 21:05:15 +0000 | [diff] [blame] | 615 | // Modify the variable's LV by the LV of its type unless this is |
| 616 | // C or extern "C". This follows from [basic.link]p9: |
| 617 | // A type without linkage shall not be used as the type of a |
| 618 | // variable or function with external linkage unless |
| 619 | // - the entity has C language linkage, or |
| 620 | // - the entity is declared within an unnamed namespace, or |
| 621 | // - the entity is not used or is defined in the same |
| 622 | // translation unit. |
| 623 | // and [basic.link]p10: |
| 624 | // ...the types specified by all declarations referring to a |
| 625 | // given variable or function shall be identical... |
| 626 | // C does not have an equivalent rule. |
| 627 | // |
John McCall | ac65c62 | 2010-10-26 04:59:26 +0000 | [diff] [blame] | 628 | // Ignore this if we've got an explicit attribute; the user |
| 629 | // probably knows what they're doing. |
| 630 | // |
John McCall | 1fb0caa | 2010-10-22 21:05:15 +0000 | [diff] [blame] | 631 | // Note that we don't want to make the variable non-external |
| 632 | // because of this, but unique-external linkage suits us. |
Rafael Espindola | d8ffd0b | 2013-05-05 20:15:21 +0000 | [diff] [blame] | 633 | if (Context.getLangOpts().CPlusPlus && !isFirstInExternCContext(Var)) { |
Rafael Espindola | 18895dc | 2013-02-27 02:27:19 +0000 | [diff] [blame] | 634 | LinkageInfo TypeLV = Var->getType()->getLinkageAndVisibility(); |
Rafael Espindola | f127eb8 | 2013-02-27 02:56:45 +0000 | [diff] [blame] | 635 | if (TypeLV.getLinkage() != ExternalLinkage) |
John McCall | af14603 | 2010-10-30 11:50:40 +0000 | [diff] [blame] | 636 | return LinkageInfo::uniqueExternal(); |
Rafael Espindola | f127eb8 | 2013-02-27 02:56:45 +0000 | [diff] [blame] | 637 | if (!LV.isVisibilityExplicit()) |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 638 | LV.mergeVisibility(TypeLV); |
John McCall | 110e8e5 | 2010-10-29 22:22:43 +0000 | [diff] [blame] | 639 | } |
| 640 | |
John McCall | 35cebc3 | 2010-11-02 18:38:13 +0000 | [diff] [blame] | 641 | if (Var->getStorageClass() == SC_PrivateExtern) |
Rafael Espindola | 5727cf5 | 2012-04-19 02:22:07 +0000 | [diff] [blame] | 642 | LV.mergeVisibility(HiddenVisibility, true); |
John McCall | 35cebc3 | 2010-11-02 18:38:13 +0000 | [diff] [blame] | 643 | |
Rafael Espindola | 538fb98 | 2012-11-12 04:10:23 +0000 | [diff] [blame] | 644 | // Note that Sema::MergeVarDecl already takes care of implementing |
| 645 | // C99 6.2.2p4 and propagating the visibility attribute, so we don't have |
| 646 | // to do it here. |
Douglas Gregor | d85b5b9 | 2009-11-25 22:24:25 +0000 | [diff] [blame] | 647 | |
Douglas Gregor | d85b5b9 | 2009-11-25 22:24:25 +0000 | [diff] [blame] | 648 | // - a function, unless it has internal linkage; or |
John McCall | 1fb0caa | 2010-10-22 21:05:15 +0000 | [diff] [blame] | 649 | } else if (const FunctionDecl *Function = dyn_cast<FunctionDecl>(D)) { |
John McCall | 67fa6d5 | 2010-10-28 07:07:52 +0000 | [diff] [blame] | 650 | // In theory, we can modify the function's LV by the LV of its |
| 651 | // type unless it has C linkage (see comment above about variables |
| 652 | // for justification). In practice, GCC doesn't do this, so it's |
| 653 | // just too painful to make work. |
John McCall | 1fb0caa | 2010-10-22 21:05:15 +0000 | [diff] [blame] | 654 | |
John McCall | 35cebc3 | 2010-11-02 18:38:13 +0000 | [diff] [blame] | 655 | if (Function->getStorageClass() == SC_PrivateExtern) |
Rafael Espindola | 5727cf5 | 2012-04-19 02:22:07 +0000 | [diff] [blame] | 656 | LV.mergeVisibility(HiddenVisibility, true); |
John McCall | 35cebc3 | 2010-11-02 18:38:13 +0000 | [diff] [blame] | 657 | |
Rafael Espindola | 5175861 | 2012-11-21 02:47:19 +0000 | [diff] [blame] | 658 | // Note that Sema::MergeCompatibleFunctionDecls already takes care of |
| 659 | // merging storage classes and visibility attributes, so we don't have to |
| 660 | // look at previous decls in here. |
Douglas Gregor | d85b5b9 | 2009-11-25 22:24:25 +0000 | [diff] [blame] | 661 | |
John McCall | af8ca37 | 2011-02-10 06:50:24 +0000 | [diff] [blame] | 662 | // In C++, then if the type of the function uses a type with |
| 663 | // unique-external linkage, it's not legally usable from outside |
| 664 | // this translation unit. However, we should use the C linkage |
| 665 | // rules instead for extern "C" declarations. |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 666 | if (Context.getLangOpts().CPlusPlus && |
Richard Smith | d248e58 | 2013-05-12 23:17:59 +0000 | [diff] [blame] | 667 | !Function->isInExternCContext()) { |
| 668 | // Only look at the type-as-written. If this function has an auto-deduced |
| 669 | // return type, we can't compute the linkage of that type because it could |
| 670 | // require looking at the linkage of this function, and we don't need this |
| 671 | // for correctness because the type is not part of the function's |
| 672 | // signature. |
| 673 | // FIXME: This is a hack. We should be able to solve this circularity some |
| 674 | // other way. |
| 675 | QualType TypeAsWritten = Function->getType(); |
| 676 | if (TypeSourceInfo *TSI = Function->getTypeSourceInfo()) |
| 677 | TypeAsWritten = TSI->getType(); |
| 678 | if (TypeAsWritten->getLinkage() == UniqueExternalLinkage) |
| 679 | return LinkageInfo::uniqueExternal(); |
| 680 | } |
John McCall | af8ca37 | 2011-02-10 06:50:24 +0000 | [diff] [blame] | 681 | |
John McCall | 3892d02 | 2013-02-21 23:42:58 +0000 | [diff] [blame] | 682 | // Consider LV from the template and the template arguments. |
| 683 | // We're at file scope, so we do not need to worry about nested |
| 684 | // specializations. |
John McCall | 6ce51ee | 2011-06-27 23:06:04 +0000 | [diff] [blame] | 685 | if (FunctionTemplateSpecializationInfo *specInfo |
Douglas Gregor | 0b6bc8b | 2010-02-03 09:33:45 +0000 | [diff] [blame] | 686 | = Function->getTemplateSpecializationInfo()) { |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 687 | mergeTemplateLV(LV, Function, specInfo); |
Douglas Gregor | 0b6bc8b | 2010-02-03 09:33:45 +0000 | [diff] [blame] | 688 | } |
| 689 | |
Douglas Gregor | d85b5b9 | 2009-11-25 22:24:25 +0000 | [diff] [blame] | 690 | // - a named class (Clause 9), or an unnamed class defined in a |
| 691 | // typedef declaration in which the class has the typedef name |
| 692 | // for linkage purposes (7.1.3); or |
| 693 | // - a named enumeration (7.2), or an unnamed enumeration |
| 694 | // defined in a typedef declaration in which the enumeration |
| 695 | // has the typedef name for linkage purposes (7.1.3); or |
John McCall | 1fb0caa | 2010-10-22 21:05:15 +0000 | [diff] [blame] | 696 | } else if (const TagDecl *Tag = dyn_cast<TagDecl>(D)) { |
| 697 | // Unnamed tags have no linkage. |
John McCall | 83972f1 | 2013-03-09 00:54:27 +0000 | [diff] [blame] | 698 | if (!Tag->hasNameForLinkage()) |
John McCall | af14603 | 2010-10-30 11:50:40 +0000 | [diff] [blame] | 699 | return LinkageInfo::none(); |
Douglas Gregor | 0b6bc8b | 2010-02-03 09:33:45 +0000 | [diff] [blame] | 700 | |
John McCall | 1fb0caa | 2010-10-22 21:05:15 +0000 | [diff] [blame] | 701 | // If this is a class template specialization, consider the |
John McCall | 3892d02 | 2013-02-21 23:42:58 +0000 | [diff] [blame] | 702 | // linkage of the template and template arguments. We're at file |
| 703 | // scope, so we do not need to worry about nested specializations. |
John McCall | 6ce51ee | 2011-06-27 23:06:04 +0000 | [diff] [blame] | 704 | if (const ClassTemplateSpecializationDecl *spec |
John McCall | 1fb0caa | 2010-10-22 21:05:15 +0000 | [diff] [blame] | 705 | = dyn_cast<ClassTemplateSpecializationDecl>(Tag)) { |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 706 | mergeTemplateLV(LV, spec, computation); |
Douglas Gregor | 0b6bc8b | 2010-02-03 09:33:45 +0000 | [diff] [blame] | 707 | } |
Douglas Gregor | d85b5b9 | 2009-11-25 22:24:25 +0000 | [diff] [blame] | 708 | |
| 709 | // - an enumerator belonging to an enumeration with external linkage; |
John McCall | 1fb0caa | 2010-10-22 21:05:15 +0000 | [diff] [blame] | 710 | } else if (isa<EnumConstantDecl>(D)) { |
Rafael Espindola | 1266b61 | 2012-04-21 23:28:21 +0000 | [diff] [blame] | 711 | LinkageInfo EnumLV = getLVForDecl(cast<NamedDecl>(D->getDeclContext()), |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 712 | computation); |
Rafael Espindola | f127eb8 | 2013-02-27 02:56:45 +0000 | [diff] [blame] | 713 | if (!isExternalLinkage(EnumLV.getLinkage())) |
John McCall | af14603 | 2010-10-30 11:50:40 +0000 | [diff] [blame] | 714 | return LinkageInfo::none(); |
| 715 | LV.merge(EnumLV); |
Douglas Gregor | d85b5b9 | 2009-11-25 22:24:25 +0000 | [diff] [blame] | 716 | |
| 717 | // - a template, unless it is a function template that has |
| 718 | // internal linkage (Clause 14); |
John McCall | 1a0918a | 2011-03-04 10:39:25 +0000 | [diff] [blame] | 719 | } else if (const TemplateDecl *temp = dyn_cast<TemplateDecl>(D)) { |
John McCall | d4c3d66 | 2013-02-20 01:54:26 +0000 | [diff] [blame] | 720 | bool considerVisibility = !hasExplicitVisibilityAlready(computation); |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 721 | LinkageInfo tempLV = |
| 722 | getLVForTemplateParameterList(temp->getTemplateParameters()); |
| 723 | LV.mergeMaybeWithVisibility(tempLV, considerVisibility); |
| 724 | |
Douglas Gregor | d85b5b9 | 2009-11-25 22:24:25 +0000 | [diff] [blame] | 725 | // - a namespace (7.3), unless it is declared within an unnamed |
| 726 | // namespace. |
John McCall | 1fb0caa | 2010-10-22 21:05:15 +0000 | [diff] [blame] | 727 | } else if (isa<NamespaceDecl>(D) && !D->isInAnonymousNamespace()) { |
| 728 | return LV; |
Douglas Gregor | d85b5b9 | 2009-11-25 22:24:25 +0000 | [diff] [blame] | 729 | |
John McCall | 1fb0caa | 2010-10-22 21:05:15 +0000 | [diff] [blame] | 730 | // By extension, we assign external linkage to Objective-C |
| 731 | // interfaces. |
| 732 | } else if (isa<ObjCInterfaceDecl>(D)) { |
| 733 | // fallout |
| 734 | |
| 735 | // Everything not covered here has no linkage. |
| 736 | } else { |
John McCall | af14603 | 2010-10-30 11:50:40 +0000 | [diff] [blame] | 737 | return LinkageInfo::none(); |
John McCall | 1fb0caa | 2010-10-22 21:05:15 +0000 | [diff] [blame] | 738 | } |
| 739 | |
| 740 | // If we ended up with non-external linkage, visibility should |
| 741 | // always be default. |
Rafael Espindola | f127eb8 | 2013-02-27 02:56:45 +0000 | [diff] [blame] | 742 | if (LV.getLinkage() != ExternalLinkage) |
| 743 | return LinkageInfo(LV.getLinkage(), DefaultVisibility, false); |
John McCall | 1fb0caa | 2010-10-22 21:05:15 +0000 | [diff] [blame] | 744 | |
John McCall | 1fb0caa | 2010-10-22 21:05:15 +0000 | [diff] [blame] | 745 | return LV; |
Douglas Gregor | d85b5b9 | 2009-11-25 22:24:25 +0000 | [diff] [blame] | 746 | } |
| 747 | |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 748 | static LinkageInfo getLVForClassMember(const NamedDecl *D, |
| 749 | LVComputationKind computation) { |
John McCall | 1fb0caa | 2010-10-22 21:05:15 +0000 | [diff] [blame] | 750 | // Only certain class members have linkage. Note that fields don't |
| 751 | // really have linkage, but it's convenient to say they do for the |
| 752 | // purposes of calculating linkage of pointer-to-data-member |
| 753 | // template arguments. |
John McCall | 3cdfc4d | 2010-08-13 08:35:10 +0000 | [diff] [blame] | 754 | if (!(isa<CXXMethodDecl>(D) || |
| 755 | isa<VarDecl>(D) || |
John McCall | 1fb0caa | 2010-10-22 21:05:15 +0000 | [diff] [blame] | 756 | isa<FieldDecl>(D) || |
David Blaikie | 66cff72 | 2012-11-14 01:52:05 +0000 | [diff] [blame] | 757 | isa<TagDecl>(D))) |
John McCall | af14603 | 2010-10-30 11:50:40 +0000 | [diff] [blame] | 758 | return LinkageInfo::none(); |
John McCall | 3cdfc4d | 2010-08-13 08:35:10 +0000 | [diff] [blame] | 759 | |
John McCall | 3698748 | 2010-11-02 01:45:15 +0000 | [diff] [blame] | 760 | LinkageInfo LV; |
| 761 | |
John McCall | 3698748 | 2010-11-02 01:45:15 +0000 | [diff] [blame] | 762 | // If we have an explicit visibility attribute, merge that in. |
John McCall | d4c3d66 | 2013-02-20 01:54:26 +0000 | [diff] [blame] | 763 | if (!hasExplicitVisibilityAlready(computation)) { |
David Blaikie | dc84cd5 | 2013-02-20 22:23:23 +0000 | [diff] [blame] | 764 | if (Optional<Visibility> Vis = getExplicitVisibility(D, computation)) |
Douglas Gregor | 4421d2b | 2011-03-26 12:10:19 +0000 | [diff] [blame] | 765 | LV.mergeVisibility(*Vis, true); |
Rafael Espindola | b04b731 | 2012-07-13 14:25:36 +0000 | [diff] [blame] | 766 | // If we're paying attention to global visibility, apply |
| 767 | // -finline-visibility-hidden if this is an inline method. |
| 768 | // |
| 769 | // Note that we do this before merging information about |
| 770 | // the class visibility. |
Rafael Espindola | f127eb8 | 2013-02-27 02:56:45 +0000 | [diff] [blame] | 771 | if (!LV.isVisibilityExplicit() && useInlineVisibilityHidden(D)) |
Rafael Espindola | b04b731 | 2012-07-13 14:25:36 +0000 | [diff] [blame] | 772 | LV.mergeVisibility(HiddenVisibility, true); |
John McCall | 3698748 | 2010-11-02 01:45:15 +0000 | [diff] [blame] | 773 | } |
Rafael Espindola | c7e6060 | 2012-04-19 05:50:08 +0000 | [diff] [blame] | 774 | |
| 775 | // If this class member has an explicit visibility attribute, the only |
| 776 | // thing that can change its visibility is the template arguments, so |
Sylvestre Ledru | bed28ac | 2012-07-23 08:59:39 +0000 | [diff] [blame] | 777 | // only look for them when processing the class. |
John McCall | d4c3d66 | 2013-02-20 01:54:26 +0000 | [diff] [blame] | 778 | LVComputationKind classComputation = computation; |
Rafael Espindola | f127eb8 | 2013-02-27 02:56:45 +0000 | [diff] [blame] | 779 | if (LV.isVisibilityExplicit()) |
John McCall | d4c3d66 | 2013-02-20 01:54:26 +0000 | [diff] [blame] | 780 | classComputation = withExplicitVisibilityAlready(computation); |
Rafael Espindola | 0f90590 | 2012-04-16 18:25:01 +0000 | [diff] [blame] | 781 | |
John McCall | 3892d02 | 2013-02-21 23:42:58 +0000 | [diff] [blame] | 782 | LinkageInfo classLV = |
| 783 | getLVForDecl(cast<RecordDecl>(D->getDeclContext()), classComputation); |
Rafael Espindola | f127eb8 | 2013-02-27 02:56:45 +0000 | [diff] [blame] | 784 | if (!isExternalLinkage(classLV.getLinkage())) |
John McCall | af14603 | 2010-10-30 11:50:40 +0000 | [diff] [blame] | 785 | return LinkageInfo::none(); |
John McCall | 3cdfc4d | 2010-08-13 08:35:10 +0000 | [diff] [blame] | 786 | |
| 787 | // If the class already has unique-external linkage, we can't improve. |
Rafael Espindola | f127eb8 | 2013-02-27 02:56:45 +0000 | [diff] [blame] | 788 | if (classLV.getLinkage() == UniqueExternalLinkage) |
John McCall | af14603 | 2010-10-30 11:50:40 +0000 | [diff] [blame] | 789 | return LinkageInfo::uniqueExternal(); |
John McCall | 3cdfc4d | 2010-08-13 08:35:10 +0000 | [diff] [blame] | 790 | |
John McCall | 3892d02 | 2013-02-21 23:42:58 +0000 | [diff] [blame] | 791 | // Otherwise, don't merge in classLV yet, because in certain cases |
| 792 | // we need to completely ignore the visibility from it. |
| 793 | |
| 794 | // Specifically, if this decl exists and has an explicit attribute. |
| 795 | const NamedDecl *explicitSpecSuppressor = 0; |
| 796 | |
John McCall | 3cdfc4d | 2010-08-13 08:35:10 +0000 | [diff] [blame] | 797 | if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(D)) { |
John McCall | af8ca37 | 2011-02-10 06:50:24 +0000 | [diff] [blame] | 798 | // If the type of the function uses a type with unique-external |
| 799 | // linkage, it's not legally usable from outside this translation unit. |
| 800 | if (MD->getType()->getLinkage() == UniqueExternalLinkage) |
| 801 | return LinkageInfo::uniqueExternal(); |
| 802 | |
John McCall | 1fb0caa | 2010-10-22 21:05:15 +0000 | [diff] [blame] | 803 | // If this is a method template specialization, use the linkage for |
| 804 | // the template parameters and arguments. |
John McCall | 6ce51ee | 2011-06-27 23:06:04 +0000 | [diff] [blame] | 805 | if (FunctionTemplateSpecializationInfo *spec |
John McCall | 3cdfc4d | 2010-08-13 08:35:10 +0000 | [diff] [blame] | 806 | = MD->getTemplateSpecializationInfo()) { |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 807 | mergeTemplateLV(LV, MD, spec); |
John McCall | 3892d02 | 2013-02-21 23:42:58 +0000 | [diff] [blame] | 808 | if (spec->isExplicitSpecialization()) { |
| 809 | explicitSpecSuppressor = MD; |
| 810 | } else if (isExplicitMemberSpecialization(spec->getTemplate())) { |
| 811 | explicitSpecSuppressor = spec->getTemplate()->getTemplatedDecl(); |
| 812 | } |
| 813 | } else if (isExplicitMemberSpecialization(MD)) { |
| 814 | explicitSpecSuppressor = MD; |
John McCall | 66cbcf3 | 2010-11-01 01:29:57 +0000 | [diff] [blame] | 815 | } |
John McCall | 1fb0caa | 2010-10-22 21:05:15 +0000 | [diff] [blame] | 816 | |
John McCall | 110e8e5 | 2010-10-29 22:22:43 +0000 | [diff] [blame] | 817 | } else if (const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(D)) { |
John McCall | 6ce51ee | 2011-06-27 23:06:04 +0000 | [diff] [blame] | 818 | if (const ClassTemplateSpecializationDecl *spec |
John McCall | 110e8e5 | 2010-10-29 22:22:43 +0000 | [diff] [blame] | 819 | = dyn_cast<ClassTemplateSpecializationDecl>(RD)) { |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 820 | mergeTemplateLV(LV, spec, computation); |
John McCall | 3892d02 | 2013-02-21 23:42:58 +0000 | [diff] [blame] | 821 | if (spec->isExplicitSpecialization()) { |
| 822 | explicitSpecSuppressor = spec; |
| 823 | } else { |
| 824 | const ClassTemplateDecl *temp = spec->getSpecializedTemplate(); |
| 825 | if (isExplicitMemberSpecialization(temp)) { |
| 826 | explicitSpecSuppressor = temp->getTemplatedDecl(); |
| 827 | } |
| 828 | } |
| 829 | } else if (isExplicitMemberSpecialization(RD)) { |
| 830 | explicitSpecSuppressor = RD; |
John McCall | 110e8e5 | 2010-10-29 22:22:43 +0000 | [diff] [blame] | 831 | } |
| 832 | |
John McCall | 110e8e5 | 2010-10-29 22:22:43 +0000 | [diff] [blame] | 833 | // Static data members. |
| 834 | } else if (const VarDecl *VD = dyn_cast<VarDecl>(D)) { |
John McCall | ee30102 | 2010-10-30 09:18:49 +0000 | [diff] [blame] | 835 | // Modify the variable's linkage by its type, but ignore the |
| 836 | // type's visibility unless it's a definition. |
Rafael Espindola | 18895dc | 2013-02-27 02:27:19 +0000 | [diff] [blame] | 837 | LinkageInfo typeLV = VD->getType()->getLinkageAndVisibility(); |
John McCall | 3892d02 | 2013-02-21 23:42:58 +0000 | [diff] [blame] | 838 | LV.mergeMaybeWithVisibility(typeLV, |
Rafael Espindola | f127eb8 | 2013-02-27 02:56:45 +0000 | [diff] [blame] | 839 | !LV.isVisibilityExplicit() && !classLV.isVisibilityExplicit()); |
John McCall | 3892d02 | 2013-02-21 23:42:58 +0000 | [diff] [blame] | 840 | |
| 841 | if (isExplicitMemberSpecialization(VD)) { |
| 842 | explicitSpecSuppressor = VD; |
| 843 | } |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 844 | |
| 845 | // Template members. |
| 846 | } else if (const TemplateDecl *temp = dyn_cast<TemplateDecl>(D)) { |
| 847 | bool considerVisibility = |
Rafael Espindola | f127eb8 | 2013-02-27 02:56:45 +0000 | [diff] [blame] | 848 | (!LV.isVisibilityExplicit() && |
| 849 | !classLV.isVisibilityExplicit() && |
John McCall | d4c3d66 | 2013-02-20 01:54:26 +0000 | [diff] [blame] | 850 | !hasExplicitVisibilityAlready(computation)); |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 851 | LinkageInfo tempLV = |
| 852 | getLVForTemplateParameterList(temp->getTemplateParameters()); |
| 853 | LV.mergeMaybeWithVisibility(tempLV, considerVisibility); |
John McCall | 3892d02 | 2013-02-21 23:42:58 +0000 | [diff] [blame] | 854 | |
| 855 | if (const RedeclarableTemplateDecl *redeclTemp = |
| 856 | dyn_cast<RedeclarableTemplateDecl>(temp)) { |
| 857 | if (isExplicitMemberSpecialization(redeclTemp)) { |
| 858 | explicitSpecSuppressor = temp->getTemplatedDecl(); |
| 859 | } |
| 860 | } |
John McCall | 110e8e5 | 2010-10-29 22:22:43 +0000 | [diff] [blame] | 861 | } |
| 862 | |
John McCall | 3892d02 | 2013-02-21 23:42:58 +0000 | [diff] [blame] | 863 | // We should never be looking for an attribute directly on a template. |
| 864 | assert(!explicitSpecSuppressor || !isa<TemplateDecl>(explicitSpecSuppressor)); |
| 865 | |
| 866 | // If this member is an explicit member specialization, and it has |
| 867 | // an explicit attribute, ignore visibility from the parent. |
| 868 | bool considerClassVisibility = true; |
| 869 | if (explicitSpecSuppressor && |
Rafael Espindola | f127eb8 | 2013-02-27 02:56:45 +0000 | [diff] [blame] | 870 | // optimization: hasDVA() is true only with explicit visibility. |
| 871 | LV.isVisibilityExplicit() && |
| 872 | classLV.getVisibility() != DefaultVisibility && |
John McCall | 3892d02 | 2013-02-21 23:42:58 +0000 | [diff] [blame] | 873 | hasDirectVisibilityAttribute(explicitSpecSuppressor, computation)) { |
| 874 | considerClassVisibility = false; |
| 875 | } |
| 876 | |
| 877 | // Finally, merge in information from the class. |
| 878 | LV.mergeMaybeWithVisibility(classLV, considerClassVisibility); |
John McCall | 1fb0caa | 2010-10-22 21:05:15 +0000 | [diff] [blame] | 879 | return LV; |
John McCall | 3cdfc4d | 2010-08-13 08:35:10 +0000 | [diff] [blame] | 880 | } |
| 881 | |
David Blaikie | 99ba9e3 | 2011-12-20 02:48:34 +0000 | [diff] [blame] | 882 | void NamedDecl::anchor() { } |
| 883 | |
Rafael Espindola | 2d1b096 | 2013-03-14 03:07:35 +0000 | [diff] [blame] | 884 | bool NamedDecl::isLinkageValid() const { |
| 885 | if (!HasCachedLinkage) |
| 886 | return true; |
John McCall | f76b092 | 2011-02-08 19:01:05 +0000 | [diff] [blame] | 887 | |
Rafael Espindola | 2d1b096 | 2013-03-14 03:07:35 +0000 | [diff] [blame] | 888 | return getLVForDecl(this, LVForExplicitValue).getLinkage() == |
| 889 | Linkage(CachedLinkage); |
John McCall | f76b092 | 2011-02-08 19:01:05 +0000 | [diff] [blame] | 890 | } |
| 891 | |
Rafael Espindola | 181e3ec | 2013-05-13 00:12:11 +0000 | [diff] [blame] | 892 | Linkage NamedDecl::getLinkageInternal() const { |
Richard Smith | ad0e27b | 2013-02-12 05:48:23 +0000 | [diff] [blame] | 893 | if (HasCachedLinkage) |
Rafael Espindola | 838dc59 | 2013-01-12 06:42:30 +0000 | [diff] [blame] | 894 | return Linkage(CachedLinkage); |
Rafael Espindola | 838dc59 | 2013-01-12 06:42:30 +0000 | [diff] [blame] | 895 | |
John McCall | d4c3d66 | 2013-02-20 01:54:26 +0000 | [diff] [blame] | 896 | // We don't care about visibility here, so ask for the cheapest |
| 897 | // possible visibility analysis. |
Rafael Espindola | f127eb8 | 2013-02-27 02:56:45 +0000 | [diff] [blame] | 898 | CachedLinkage = getLVForDecl(this, LVForExplicitValue).getLinkage(); |
Rafael Espindola | 838dc59 | 2013-01-12 06:42:30 +0000 | [diff] [blame] | 899 | HasCachedLinkage = 1; |
| 900 | |
| 901 | #ifndef NDEBUG |
| 902 | verifyLinkage(); |
| 903 | #endif |
| 904 | |
| 905 | return Linkage(CachedLinkage); |
Douglas Gregor | 381d34e | 2010-12-06 18:36:25 +0000 | [diff] [blame] | 906 | } |
| 907 | |
John McCall | af14603 | 2010-10-30 11:50:40 +0000 | [diff] [blame] | 908 | LinkageInfo NamedDecl::getLinkageAndVisibility() const { |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 909 | LVComputationKind computation = |
| 910 | (usesTypeVisibility(this) ? LVForType : LVForValue); |
| 911 | LinkageInfo LI = getLVForDecl(this, computation); |
Rafael Espindola | 838dc59 | 2013-01-12 06:42:30 +0000 | [diff] [blame] | 912 | if (HasCachedLinkage) { |
Rafael Espindola | f127eb8 | 2013-02-27 02:56:45 +0000 | [diff] [blame] | 913 | assert(Linkage(CachedLinkage) == LI.getLinkage()); |
Rafael Espindola | 838dc59 | 2013-01-12 06:42:30 +0000 | [diff] [blame] | 914 | return LI; |
Rafael Espindola | 140aadf | 2012-12-25 07:31:49 +0000 | [diff] [blame] | 915 | } |
Rafael Espindola | 838dc59 | 2013-01-12 06:42:30 +0000 | [diff] [blame] | 916 | HasCachedLinkage = 1; |
Rafael Espindola | f127eb8 | 2013-02-27 02:56:45 +0000 | [diff] [blame] | 917 | CachedLinkage = LI.getLinkage(); |
Rafael Espindola | 6acc4bc | 2013-01-05 01:28:37 +0000 | [diff] [blame] | 918 | |
| 919 | #ifndef NDEBUG |
Rafael Espindola | 838dc59 | 2013-01-12 06:42:30 +0000 | [diff] [blame] | 920 | verifyLinkage(); |
| 921 | #endif |
| 922 | |
| 923 | return LI; |
| 924 | } |
| 925 | |
| 926 | void NamedDecl::verifyLinkage() const { |
Rafael Espindola | 6acc4bc | 2013-01-05 01:28:37 +0000 | [diff] [blame] | 927 | // In C (because of gnu inline) and in c++ with microsoft extensions an |
| 928 | // static can follow an extern, so we can have two decls with different |
| 929 | // linkages. |
| 930 | const LangOptions &Opts = getASTContext().getLangOpts(); |
| 931 | if (!Opts.CPlusPlus || Opts.MicrosoftExt) |
Rafael Espindola | 838dc59 | 2013-01-12 06:42:30 +0000 | [diff] [blame] | 932 | return; |
Rafael Espindola | 6acc4bc | 2013-01-05 01:28:37 +0000 | [diff] [blame] | 933 | |
| 934 | // We have just computed the linkage for this decl. By induction we know |
| 935 | // that all other computed linkages match, check that the one we just computed |
| 936 | // also does. |
| 937 | NamedDecl *D = NULL; |
| 938 | for (redecl_iterator I = redecls_begin(), E = redecls_end(); I != E; ++I) { |
| 939 | NamedDecl *T = cast<NamedDecl>(*I); |
| 940 | if (T == this) |
| 941 | continue; |
Rafael Espindola | 838dc59 | 2013-01-12 06:42:30 +0000 | [diff] [blame] | 942 | if (T->HasCachedLinkage != 0) { |
Rafael Espindola | 6acc4bc | 2013-01-05 01:28:37 +0000 | [diff] [blame] | 943 | D = T; |
| 944 | break; |
| 945 | } |
| 946 | } |
| 947 | assert(!D || D->CachedLinkage == CachedLinkage); |
John McCall | 0df9587 | 2010-10-29 00:29:13 +0000 | [diff] [blame] | 948 | } |
Ted Kremenek | becc308 | 2010-04-20 23:15:35 +0000 | [diff] [blame] | 949 | |
David Blaikie | dc84cd5 | 2013-02-20 22:23:23 +0000 | [diff] [blame] | 950 | Optional<Visibility> |
John McCall | d4c3d66 | 2013-02-20 01:54:26 +0000 | [diff] [blame] | 951 | NamedDecl::getExplicitVisibility(ExplicitVisibilityKind kind) const { |
Rafael Espindola | d3b2f0a | 2013-02-26 19:33:14 +0000 | [diff] [blame] | 952 | // Check the declaration itself first. |
| 953 | if (Optional<Visibility> V = getVisibilityOf(this, kind)) |
| 954 | return V; |
Douglas Gregor | 4421d2b | 2011-03-26 12:10:19 +0000 | [diff] [blame] | 955 | |
Rafael Espindola | d3b2f0a | 2013-02-26 19:33:14 +0000 | [diff] [blame] | 956 | // If this is a member class of a specialization of a class template |
| 957 | // and the corresponding decl has explicit visibility, use that. |
| 958 | if (const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(this)) { |
| 959 | CXXRecordDecl *InstantiatedFrom = RD->getInstantiatedFromMemberClass(); |
| 960 | if (InstantiatedFrom) |
| 961 | return getVisibilityOf(InstantiatedFrom, kind); |
| 962 | } |
| 963 | |
| 964 | // If there wasn't explicit visibility there, and this is a |
| 965 | // specialization of a class template, check for visibility |
| 966 | // on the pattern. |
| 967 | if (const ClassTemplateSpecializationDecl *spec |
| 968 | = dyn_cast<ClassTemplateSpecializationDecl>(this)) |
| 969 | return getVisibilityOf(spec->getSpecializedTemplate()->getTemplatedDecl(), |
| 970 | kind); |
| 971 | |
| 972 | // Use the most recent declaration. |
| 973 | const NamedDecl *MostRecent = cast<NamedDecl>(this->getMostRecentDecl()); |
| 974 | if (MostRecent != this) |
| 975 | return MostRecent->getExplicitVisibility(kind); |
| 976 | |
| 977 | if (const VarDecl *Var = dyn_cast<VarDecl>(this)) { |
Rafael Espindola | 797105a | 2012-05-16 02:10:38 +0000 | [diff] [blame] | 978 | if (Var->isStaticDataMember()) { |
| 979 | VarDecl *InstantiatedFrom = Var->getInstantiatedFromStaticDataMember(); |
| 980 | if (InstantiatedFrom) |
John McCall | d4c3d66 | 2013-02-20 01:54:26 +0000 | [diff] [blame] | 981 | return getVisibilityOf(InstantiatedFrom, kind); |
Rafael Espindola | 797105a | 2012-05-16 02:10:38 +0000 | [diff] [blame] | 982 | } |
| 983 | |
David Blaikie | 66874fb | 2013-02-21 01:47:18 +0000 | [diff] [blame] | 984 | return None; |
Rafael Espindola | 797105a | 2012-05-16 02:10:38 +0000 | [diff] [blame] | 985 | } |
Rafael Espindola | d3b2f0a | 2013-02-26 19:33:14 +0000 | [diff] [blame] | 986 | // Also handle function template specializations. |
Douglas Gregor | 4421d2b | 2011-03-26 12:10:19 +0000 | [diff] [blame] | 987 | if (const FunctionDecl *fn = dyn_cast<FunctionDecl>(this)) { |
Douglas Gregor | 4421d2b | 2011-03-26 12:10:19 +0000 | [diff] [blame] | 988 | // If the function is a specialization of a template with an |
| 989 | // explicit visibility attribute, use that. |
| 990 | if (FunctionTemplateSpecializationInfo *templateInfo |
| 991 | = fn->getTemplateSpecializationInfo()) |
John McCall | d4c3d66 | 2013-02-20 01:54:26 +0000 | [diff] [blame] | 992 | return getVisibilityOf(templateInfo->getTemplate()->getTemplatedDecl(), |
| 993 | kind); |
Douglas Gregor | 4421d2b | 2011-03-26 12:10:19 +0000 | [diff] [blame] | 994 | |
Rafael Espindola | 860097c | 2012-02-23 04:17:32 +0000 | [diff] [blame] | 995 | // If the function is a member of a specialization of a class template |
| 996 | // and the corresponding decl has explicit visibility, use that. |
| 997 | FunctionDecl *InstantiatedFrom = fn->getInstantiatedFromMemberFunction(); |
| 998 | if (InstantiatedFrom) |
John McCall | d4c3d66 | 2013-02-20 01:54:26 +0000 | [diff] [blame] | 999 | return getVisibilityOf(InstantiatedFrom, kind); |
Rafael Espindola | 860097c | 2012-02-23 04:17:32 +0000 | [diff] [blame] | 1000 | |
David Blaikie | 66874fb | 2013-02-21 01:47:18 +0000 | [diff] [blame] | 1001 | return None; |
Douglas Gregor | 4421d2b | 2011-03-26 12:10:19 +0000 | [diff] [blame] | 1002 | } |
| 1003 | |
Rafael Espindola | 9849901 | 2012-07-31 19:02:02 +0000 | [diff] [blame] | 1004 | // The visibility of a template is stored in the templated decl. |
| 1005 | if (const TemplateDecl *TD = dyn_cast<TemplateDecl>(this)) |
John McCall | d4c3d66 | 2013-02-20 01:54:26 +0000 | [diff] [blame] | 1006 | return getVisibilityOf(TD->getTemplatedDecl(), kind); |
Rafael Espindola | 9849901 | 2012-07-31 19:02:02 +0000 | [diff] [blame] | 1007 | |
David Blaikie | 66874fb | 2013-02-21 01:47:18 +0000 | [diff] [blame] | 1008 | return None; |
Douglas Gregor | 4421d2b | 2011-03-26 12:10:19 +0000 | [diff] [blame] | 1009 | } |
| 1010 | |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 1011 | static LinkageInfo getLVForLocalDecl(const NamedDecl *D, |
| 1012 | LVComputationKind computation) { |
| 1013 | if (const FunctionDecl *Function = dyn_cast<FunctionDecl>(D)) { |
| 1014 | if (Function->isInAnonymousNamespace() && |
Rafael Espindola | d8ffd0b | 2013-05-05 20:15:21 +0000 | [diff] [blame] | 1015 | !Function->isInExternCContext()) |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 1016 | return LinkageInfo::uniqueExternal(); |
| 1017 | |
| 1018 | // This is a "void f();" which got merged with a file static. |
Rafael Espindola | d2615cc | 2013-04-03 19:27:57 +0000 | [diff] [blame] | 1019 | if (Function->getCanonicalDecl()->getStorageClass() == SC_Static) |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 1020 | return LinkageInfo::internal(); |
| 1021 | |
| 1022 | LinkageInfo LV; |
John McCall | d4c3d66 | 2013-02-20 01:54:26 +0000 | [diff] [blame] | 1023 | if (!hasExplicitVisibilityAlready(computation)) { |
David Blaikie | dc84cd5 | 2013-02-20 22:23:23 +0000 | [diff] [blame] | 1024 | if (Optional<Visibility> Vis = |
| 1025 | getExplicitVisibility(Function, computation)) |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 1026 | LV.mergeVisibility(*Vis, true); |
| 1027 | } |
| 1028 | |
| 1029 | // Note that Sema::MergeCompatibleFunctionDecls already takes care of |
| 1030 | // merging storage classes and visibility attributes, so we don't have to |
| 1031 | // look at previous decls in here. |
| 1032 | |
| 1033 | return LV; |
| 1034 | } |
| 1035 | |
| 1036 | if (const VarDecl *Var = dyn_cast<VarDecl>(D)) { |
Rafael Espindola | d2615cc | 2013-04-03 19:27:57 +0000 | [diff] [blame] | 1037 | if (Var->hasExternalStorage()) { |
Rafael Espindola | d8ffd0b | 2013-05-05 20:15:21 +0000 | [diff] [blame] | 1038 | if (Var->isInAnonymousNamespace() && !Var->isInExternCContext()) |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 1039 | return LinkageInfo::uniqueExternal(); |
| 1040 | |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 1041 | LinkageInfo LV; |
| 1042 | if (Var->getStorageClass() == SC_PrivateExtern) |
| 1043 | LV.mergeVisibility(HiddenVisibility, true); |
John McCall | d4c3d66 | 2013-02-20 01:54:26 +0000 | [diff] [blame] | 1044 | else if (!hasExplicitVisibilityAlready(computation)) { |
David Blaikie | dc84cd5 | 2013-02-20 22:23:23 +0000 | [diff] [blame] | 1045 | if (Optional<Visibility> Vis = getExplicitVisibility(Var, computation)) |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 1046 | LV.mergeVisibility(*Vis, true); |
| 1047 | } |
| 1048 | |
Rafael Espindola | d2615cc | 2013-04-03 19:27:57 +0000 | [diff] [blame] | 1049 | if (const VarDecl *Prev = Var->getPreviousDecl()) { |
| 1050 | LinkageInfo PrevLV = getLVForDecl(Prev, computation); |
| 1051 | if (PrevLV.getLinkage()) |
| 1052 | LV.setLinkage(PrevLV.getLinkage()); |
| 1053 | LV.mergeVisibility(PrevLV); |
| 1054 | } |
| 1055 | |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 1056 | return LV; |
| 1057 | } |
| 1058 | } |
| 1059 | |
| 1060 | return LinkageInfo::none(); |
| 1061 | } |
| 1062 | |
| 1063 | static LinkageInfo getLVForDecl(const NamedDecl *D, |
| 1064 | LVComputationKind computation) { |
Ted Kremenek | becc308 | 2010-04-20 23:15:35 +0000 | [diff] [blame] | 1065 | // Objective-C: treat all Objective-C declarations as having external |
| 1066 | // linkage. |
John McCall | 0df9587 | 2010-10-29 00:29:13 +0000 | [diff] [blame] | 1067 | switch (D->getKind()) { |
Ted Kremenek | becc308 | 2010-04-20 23:15:35 +0000 | [diff] [blame] | 1068 | default: |
| 1069 | break; |
Argyrios Kyrtzidis | f8d34ed | 2011-12-01 01:28:21 +0000 | [diff] [blame] | 1070 | case Decl::ParmVar: |
| 1071 | return LinkageInfo::none(); |
John McCall | 1fb0caa | 2010-10-22 21:05:15 +0000 | [diff] [blame] | 1072 | case Decl::TemplateTemplateParm: // count these as external |
| 1073 | case Decl::NonTypeTemplateParm: |
Ted Kremenek | becc308 | 2010-04-20 23:15:35 +0000 | [diff] [blame] | 1074 | case Decl::ObjCAtDefsField: |
| 1075 | case Decl::ObjCCategory: |
| 1076 | case Decl::ObjCCategoryImpl: |
Ted Kremenek | becc308 | 2010-04-20 23:15:35 +0000 | [diff] [blame] | 1077 | case Decl::ObjCCompatibleAlias: |
Ted Kremenek | becc308 | 2010-04-20 23:15:35 +0000 | [diff] [blame] | 1078 | case Decl::ObjCImplementation: |
Ted Kremenek | becc308 | 2010-04-20 23:15:35 +0000 | [diff] [blame] | 1079 | case Decl::ObjCMethod: |
| 1080 | case Decl::ObjCProperty: |
| 1081 | case Decl::ObjCPropertyImpl: |
| 1082 | case Decl::ObjCProtocol: |
John McCall | af14603 | 2010-10-30 11:50:40 +0000 | [diff] [blame] | 1083 | return LinkageInfo::external(); |
Douglas Gregor | 5878cbc | 2012-02-21 04:17:39 +0000 | [diff] [blame] | 1084 | |
| 1085 | case Decl::CXXRecord: { |
| 1086 | const CXXRecordDecl *Record = cast<CXXRecordDecl>(D); |
| 1087 | if (Record->isLambda()) { |
| 1088 | if (!Record->getLambdaManglingNumber()) { |
| 1089 | // This lambda has no mangling number, so it's internal. |
| 1090 | return LinkageInfo::internal(); |
| 1091 | } |
| 1092 | |
| 1093 | // This lambda has its linkage/visibility determined by its owner. |
| 1094 | const DeclContext *DC = D->getDeclContext()->getRedeclContext(); |
| 1095 | if (Decl *ContextDecl = Record->getLambdaContextDecl()) { |
| 1096 | if (isa<ParmVarDecl>(ContextDecl)) |
| 1097 | DC = ContextDecl->getDeclContext()->getRedeclContext(); |
| 1098 | else |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 1099 | return getLVForDecl(cast<NamedDecl>(ContextDecl), computation); |
Douglas Gregor | 5878cbc | 2012-02-21 04:17:39 +0000 | [diff] [blame] | 1100 | } |
| 1101 | |
| 1102 | if (const NamedDecl *ND = dyn_cast<NamedDecl>(DC)) |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 1103 | return getLVForDecl(ND, computation); |
Douglas Gregor | 5878cbc | 2012-02-21 04:17:39 +0000 | [diff] [blame] | 1104 | |
| 1105 | return LinkageInfo::external(); |
| 1106 | } |
| 1107 | |
| 1108 | break; |
| 1109 | } |
Ted Kremenek | becc308 | 2010-04-20 23:15:35 +0000 | [diff] [blame] | 1110 | } |
| 1111 | |
Douglas Gregor | d85b5b9 | 2009-11-25 22:24:25 +0000 | [diff] [blame] | 1112 | // Handle linkage for namespace-scope names. |
John McCall | 0df9587 | 2010-10-29 00:29:13 +0000 | [diff] [blame] | 1113 | if (D->getDeclContext()->getRedeclContext()->isFileContext()) |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 1114 | return getLVForNamespaceScopeDecl(D, computation); |
Douglas Gregor | d85b5b9 | 2009-11-25 22:24:25 +0000 | [diff] [blame] | 1115 | |
| 1116 | // C++ [basic.link]p5: |
| 1117 | // In addition, a member function, static data member, a named |
| 1118 | // class or enumeration of class scope, or an unnamed class or |
| 1119 | // enumeration defined in a class-scope typedef declaration such |
| 1120 | // that the class or enumeration has the typedef name for linkage |
| 1121 | // purposes (7.1.3), has external linkage if the name of the class |
| 1122 | // has external linkage. |
John McCall | 0df9587 | 2010-10-29 00:29:13 +0000 | [diff] [blame] | 1123 | if (D->getDeclContext()->isRecord()) |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 1124 | return getLVForClassMember(D, computation); |
Douglas Gregor | d85b5b9 | 2009-11-25 22:24:25 +0000 | [diff] [blame] | 1125 | |
| 1126 | // C++ [basic.link]p6: |
| 1127 | // The name of a function declared in block scope and the name of |
| 1128 | // an object declared by a block scope extern declaration have |
| 1129 | // linkage. If there is a visible declaration of an entity with |
| 1130 | // linkage having the same name and type, ignoring entities |
| 1131 | // declared outside the innermost enclosing namespace scope, the |
| 1132 | // block scope declaration declares that same entity and receives |
| 1133 | // the linkage of the previous declaration. If there is more than |
| 1134 | // one such matching entity, the program is ill-formed. Otherwise, |
| 1135 | // if no matching entity is found, the block scope entity receives |
| 1136 | // external linkage. |
John McCall | 5a758de | 2013-02-16 00:17:33 +0000 | [diff] [blame] | 1137 | if (D->getDeclContext()->isFunctionOrMethod()) |
| 1138 | return getLVForLocalDecl(D, computation); |
Douglas Gregor | d85b5b9 | 2009-11-25 22:24:25 +0000 | [diff] [blame] | 1139 | |
| 1140 | // C++ [basic.link]p6: |
| 1141 | // Names not covered by these rules have no linkage. |
John McCall | af14603 | 2010-10-30 11:50:40 +0000 | [diff] [blame] | 1142 | return LinkageInfo::none(); |
John McCall | 1fb0caa | 2010-10-22 21:05:15 +0000 | [diff] [blame] | 1143 | } |
Douglas Gregor | d85b5b9 | 2009-11-25 22:24:25 +0000 | [diff] [blame] | 1144 | |
Douglas Gregor | 47b9a1c | 2009-02-04 17:27:36 +0000 | [diff] [blame] | 1145 | std::string NamedDecl::getQualifiedNameAsString() const { |
Douglas Gregor | ba10306 | 2012-03-27 23:34:16 +0000 | [diff] [blame] | 1146 | return getQualifiedNameAsString(getASTContext().getPrintingPolicy()); |
Anders Carlsson | 3a082d8 | 2009-09-08 18:24:21 +0000 | [diff] [blame] | 1147 | } |
| 1148 | |
| 1149 | std::string NamedDecl::getQualifiedNameAsString(const PrintingPolicy &P) const { |
Benjamin Kramer | b063ef0 | 2013-02-23 13:53:57 +0000 | [diff] [blame] | 1150 | std::string QualName; |
| 1151 | llvm::raw_string_ostream OS(QualName); |
| 1152 | printQualifiedName(OS, P); |
| 1153 | return OS.str(); |
| 1154 | } |
| 1155 | |
| 1156 | void NamedDecl::printQualifiedName(raw_ostream &OS) const { |
| 1157 | printQualifiedName(OS, getASTContext().getPrintingPolicy()); |
| 1158 | } |
| 1159 | |
| 1160 | void NamedDecl::printQualifiedName(raw_ostream &OS, |
| 1161 | const PrintingPolicy &P) const { |
Douglas Gregor | 47b9a1c | 2009-02-04 17:27:36 +0000 | [diff] [blame] | 1162 | const DeclContext *Ctx = getDeclContext(); |
| 1163 | |
Benjamin Kramer | b063ef0 | 2013-02-23 13:53:57 +0000 | [diff] [blame] | 1164 | if (Ctx->isFunctionOrMethod()) { |
| 1165 | printName(OS); |
| 1166 | return; |
| 1167 | } |
Douglas Gregor | 47b9a1c | 2009-02-04 17:27:36 +0000 | [diff] [blame] | 1168 | |
Chris Lattner | 5f9e272 | 2011-07-23 10:55:15 +0000 | [diff] [blame] | 1169 | typedef SmallVector<const DeclContext *, 8> ContextsTy; |
Benjamin Kramer | 68eebbb | 2010-04-28 14:33:51 +0000 | [diff] [blame] | 1170 | ContextsTy Contexts; |
| 1171 | |
| 1172 | // Collect contexts. |
| 1173 | while (Ctx && isa<NamedDecl>(Ctx)) { |
| 1174 | Contexts.push_back(Ctx); |
| 1175 | Ctx = Ctx->getParent(); |
Benjamin Kramer | b063ef0 | 2013-02-23 13:53:57 +0000 | [diff] [blame] | 1176 | } |
Benjamin Kramer | 68eebbb | 2010-04-28 14:33:51 +0000 | [diff] [blame] | 1177 | |
| 1178 | for (ContextsTy::reverse_iterator I = Contexts.rbegin(), E = Contexts.rend(); |
| 1179 | I != E; ++I) { |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1180 | if (const ClassTemplateSpecializationDecl *Spec |
Benjamin Kramer | 68eebbb | 2010-04-28 14:33:51 +0000 | [diff] [blame] | 1181 | = dyn_cast<ClassTemplateSpecializationDecl>(*I)) { |
Benjamin Kramer | 5eada84 | 2013-02-22 15:46:01 +0000 | [diff] [blame] | 1182 | OS << Spec->getName(); |
Douglas Gregor | f3e7ce4 | 2009-05-18 17:01:57 +0000 | [diff] [blame] | 1183 | const TemplateArgumentList &TemplateArgs = Spec->getTemplateArgs(); |
Benjamin Kramer | 5eada84 | 2013-02-22 15:46:01 +0000 | [diff] [blame] | 1184 | TemplateSpecializationType::PrintTemplateArgumentList(OS, |
| 1185 | TemplateArgs.data(), |
| 1186 | TemplateArgs.size(), |
| 1187 | P); |
Benjamin Kramer | 68eebbb | 2010-04-28 14:33:51 +0000 | [diff] [blame] | 1188 | } else if (const NamespaceDecl *ND = dyn_cast<NamespaceDecl>(*I)) { |
Sam Weinig | 6be1120 | 2009-12-24 23:15:03 +0000 | [diff] [blame] | 1189 | if (ND->isAnonymousNamespace()) |
Benjamin Kramer | 68eebbb | 2010-04-28 14:33:51 +0000 | [diff] [blame] | 1190 | OS << "<anonymous namespace>"; |
Sam Weinig | 6be1120 | 2009-12-24 23:15:03 +0000 | [diff] [blame] | 1191 | else |
Benjamin Kramer | b8989f2 | 2011-10-14 18:45:37 +0000 | [diff] [blame] | 1192 | OS << *ND; |
Benjamin Kramer | 68eebbb | 2010-04-28 14:33:51 +0000 | [diff] [blame] | 1193 | } else if (const RecordDecl *RD = dyn_cast<RecordDecl>(*I)) { |
| 1194 | if (!RD->getIdentifier()) |
| 1195 | OS << "<anonymous " << RD->getKindName() << '>'; |
| 1196 | else |
Benjamin Kramer | b8989f2 | 2011-10-14 18:45:37 +0000 | [diff] [blame] | 1197 | OS << *RD; |
Benjamin Kramer | 68eebbb | 2010-04-28 14:33:51 +0000 | [diff] [blame] | 1198 | } else if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(*I)) { |
Sam Weinig | 3521d01 | 2009-12-28 03:19:38 +0000 | [diff] [blame] | 1199 | const FunctionProtoType *FT = 0; |
| 1200 | if (FD->hasWrittenPrototype()) |
Eli Friedman | 482466b | 2012-08-30 22:22:09 +0000 | [diff] [blame] | 1201 | FT = dyn_cast<FunctionProtoType>(FD->getType()->castAs<FunctionType>()); |
Sam Weinig | 3521d01 | 2009-12-28 03:19:38 +0000 | [diff] [blame] | 1202 | |
Benjamin Kramer | b8989f2 | 2011-10-14 18:45:37 +0000 | [diff] [blame] | 1203 | OS << *FD << '('; |
Sam Weinig | 3521d01 | 2009-12-28 03:19:38 +0000 | [diff] [blame] | 1204 | if (FT) { |
Sam Weinig | 3521d01 | 2009-12-28 03:19:38 +0000 | [diff] [blame] | 1205 | unsigned NumParams = FD->getNumParams(); |
| 1206 | for (unsigned i = 0; i < NumParams; ++i) { |
| 1207 | if (i) |
Benjamin Kramer | 68eebbb | 2010-04-28 14:33:51 +0000 | [diff] [blame] | 1208 | OS << ", "; |
Argyrios Kyrtzidis | 7ad5c99 | 2012-05-05 04:20:37 +0000 | [diff] [blame] | 1209 | OS << FD->getParamDecl(i)->getType().stream(P); |
Sam Weinig | 3521d01 | 2009-12-28 03:19:38 +0000 | [diff] [blame] | 1210 | } |
| 1211 | |
| 1212 | if (FT->isVariadic()) { |
| 1213 | if (NumParams > 0) |
Benjamin Kramer | 68eebbb | 2010-04-28 14:33:51 +0000 | [diff] [blame] | 1214 | OS << ", "; |
| 1215 | OS << "..."; |
Sam Weinig | 3521d01 | 2009-12-28 03:19:38 +0000 | [diff] [blame] | 1216 | } |
| 1217 | } |
Benjamin Kramer | 68eebbb | 2010-04-28 14:33:51 +0000 | [diff] [blame] | 1218 | OS << ')'; |
| 1219 | } else { |
Benjamin Kramer | b8989f2 | 2011-10-14 18:45:37 +0000 | [diff] [blame] | 1220 | OS << *cast<NamedDecl>(*I); |
Benjamin Kramer | 68eebbb | 2010-04-28 14:33:51 +0000 | [diff] [blame] | 1221 | } |
| 1222 | OS << "::"; |
Douglas Gregor | 47b9a1c | 2009-02-04 17:27:36 +0000 | [diff] [blame] | 1223 | } |
| 1224 | |
John McCall | 8472af4 | 2010-03-16 21:48:18 +0000 | [diff] [blame] | 1225 | if (getDeclName()) |
Benjamin Kramer | b8989f2 | 2011-10-14 18:45:37 +0000 | [diff] [blame] | 1226 | OS << *this; |
John McCall | 8472af4 | 2010-03-16 21:48:18 +0000 | [diff] [blame] | 1227 | else |
Benjamin Kramer | 68eebbb | 2010-04-28 14:33:51 +0000 | [diff] [blame] | 1228 | OS << "<anonymous>"; |
Benjamin Kramer | b063ef0 | 2013-02-23 13:53:57 +0000 | [diff] [blame] | 1229 | } |
Douglas Gregor | 47b9a1c | 2009-02-04 17:27:36 +0000 | [diff] [blame] | 1230 | |
Benjamin Kramer | b063ef0 | 2013-02-23 13:53:57 +0000 | [diff] [blame] | 1231 | void NamedDecl::getNameForDiagnostic(raw_ostream &OS, |
| 1232 | const PrintingPolicy &Policy, |
| 1233 | bool Qualified) const { |
| 1234 | if (Qualified) |
| 1235 | printQualifiedName(OS, Policy); |
| 1236 | else |
| 1237 | printName(OS); |
Douglas Gregor | 47b9a1c | 2009-02-04 17:27:36 +0000 | [diff] [blame] | 1238 | } |
| 1239 | |
Douglas Gregor | 4afa39d | 2009-01-20 01:17:11 +0000 | [diff] [blame] | 1240 | bool NamedDecl::declarationReplaces(NamedDecl *OldD) const { |
Douglas Gregor | 6ed40e3 | 2008-12-23 21:05:05 +0000 | [diff] [blame] | 1241 | assert(getDeclName() == OldD->getDeclName() && "Declaration name mismatch"); |
| 1242 | |
Douglas Gregor | 2a3009a | 2009-02-03 19:21:40 +0000 | [diff] [blame] | 1243 | // UsingDirectiveDecl's are not really NamedDecl's, and all have same name. |
| 1244 | // We want to keep it, unless it nominates same namespace. |
| 1245 | if (getKind() == Decl::UsingDirective) { |
Douglas Gregor | db99241 | 2011-02-25 16:33:46 +0000 | [diff] [blame] | 1246 | return cast<UsingDirectiveDecl>(this)->getNominatedNamespace() |
| 1247 | ->getOriginalNamespace() == |
| 1248 | cast<UsingDirectiveDecl>(OldD)->getNominatedNamespace() |
| 1249 | ->getOriginalNamespace(); |
Douglas Gregor | 2a3009a | 2009-02-03 19:21:40 +0000 | [diff] [blame] | 1250 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1251 | |
Douglas Gregor | 6ed40e3 | 2008-12-23 21:05:05 +0000 | [diff] [blame] | 1252 | if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(this)) |
| 1253 | // For function declarations, we keep track of redeclarations. |
Douglas Gregor | ef96ee0 | 2012-01-14 16:38:05 +0000 | [diff] [blame] | 1254 | return FD->getPreviousDecl() == OldD; |
Douglas Gregor | 6ed40e3 | 2008-12-23 21:05:05 +0000 | [diff] [blame] | 1255 | |
Douglas Gregor | e53060f | 2009-06-25 22:08:12 +0000 | [diff] [blame] | 1256 | // For function templates, the underlying function declarations are linked. |
| 1257 | if (const FunctionTemplateDecl *FunctionTemplate |
| 1258 | = dyn_cast<FunctionTemplateDecl>(this)) |
| 1259 | if (const FunctionTemplateDecl *OldFunctionTemplate |
| 1260 | = dyn_cast<FunctionTemplateDecl>(OldD)) |
| 1261 | return FunctionTemplate->getTemplatedDecl() |
| 1262 | ->declarationReplaces(OldFunctionTemplate->getTemplatedDecl()); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1263 | |
Steve Naroff | 0de21fd | 2009-02-22 19:35:57 +0000 | [diff] [blame] | 1264 | // For method declarations, we keep track of redeclarations. |
| 1265 | if (isa<ObjCMethodDecl>(this)) |
| 1266 | return false; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1267 | |
John McCall | f36e02d | 2009-10-09 21:13:30 +0000 | [diff] [blame] | 1268 | if (isa<ObjCInterfaceDecl>(this) && isa<ObjCCompatibleAliasDecl>(OldD)) |
| 1269 | return true; |
| 1270 | |
John McCall | 9488ea1 | 2009-11-17 05:59:44 +0000 | [diff] [blame] | 1271 | if (isa<UsingShadowDecl>(this) && isa<UsingShadowDecl>(OldD)) |
| 1272 | return cast<UsingShadowDecl>(this)->getTargetDecl() == |
| 1273 | cast<UsingShadowDecl>(OldD)->getTargetDecl(); |
| 1274 | |
Douglas Gregor | dc35571 | 2011-02-25 00:36:19 +0000 | [diff] [blame] | 1275 | if (isa<UsingDecl>(this) && isa<UsingDecl>(OldD)) { |
| 1276 | ASTContext &Context = getASTContext(); |
| 1277 | return Context.getCanonicalNestedNameSpecifier( |
| 1278 | cast<UsingDecl>(this)->getQualifier()) == |
| 1279 | Context.getCanonicalNestedNameSpecifier( |
| 1280 | cast<UsingDecl>(OldD)->getQualifier()); |
| 1281 | } |
Argyrios Kyrtzidis | c80117e | 2010-11-04 08:48:52 +0000 | [diff] [blame] | 1282 | |
Douglas Gregor | 7a53740 | 2012-01-03 23:26:26 +0000 | [diff] [blame] | 1283 | // A typedef of an Objective-C class type can replace an Objective-C class |
| 1284 | // declaration or definition, and vice versa. |
| 1285 | if ((isa<TypedefNameDecl>(this) && isa<ObjCInterfaceDecl>(OldD)) || |
| 1286 | (isa<ObjCInterfaceDecl>(this) && isa<TypedefNameDecl>(OldD))) |
| 1287 | return true; |
| 1288 | |
Douglas Gregor | 6ed40e3 | 2008-12-23 21:05:05 +0000 | [diff] [blame] | 1289 | // For non-function declarations, if the declarations are of the |
| 1290 | // same kind then this must be a redeclaration, or semantic analysis |
| 1291 | // would not have given us the new declaration. |
| 1292 | return this->getKind() == OldD->getKind(); |
| 1293 | } |
| 1294 | |
Douglas Gregor | d6f7e9d | 2009-02-24 20:03:32 +0000 | [diff] [blame] | 1295 | bool NamedDecl::hasLinkage() const { |
Rafael Espindola | 181e3ec | 2013-05-13 00:12:11 +0000 | [diff] [blame] | 1296 | return getLinkageInternal() != NoLinkage; |
Douglas Gregor | d6f7e9d | 2009-02-24 20:03:32 +0000 | [diff] [blame] | 1297 | } |
Douglas Gregor | 4afa39d | 2009-01-20 01:17:11 +0000 | [diff] [blame] | 1298 | |
Daniel Dunbar | 6daffa5 | 2012-03-08 18:20:41 +0000 | [diff] [blame] | 1299 | NamedDecl *NamedDecl::getUnderlyingDeclImpl() { |
Anders Carlsson | e136e0e | 2009-06-26 06:29:23 +0000 | [diff] [blame] | 1300 | NamedDecl *ND = this; |
Benjamin Kramer | 56757e9 | 2012-03-08 21:00:45 +0000 | [diff] [blame] | 1301 | while (UsingShadowDecl *UD = dyn_cast<UsingShadowDecl>(ND)) |
| 1302 | ND = UD->getTargetDecl(); |
| 1303 | |
| 1304 | if (ObjCCompatibleAliasDecl *AD = dyn_cast<ObjCCompatibleAliasDecl>(ND)) |
| 1305 | return AD->getClassInterface(); |
| 1306 | |
| 1307 | return ND; |
Anders Carlsson | e136e0e | 2009-06-26 06:29:23 +0000 | [diff] [blame] | 1308 | } |
| 1309 | |
John McCall | 161755a | 2010-04-06 21:38:20 +0000 | [diff] [blame] | 1310 | bool NamedDecl::isCXXInstanceMember() const { |
Douglas Gregor | 5bc37f6 | 2012-03-08 02:08:05 +0000 | [diff] [blame] | 1311 | if (!isCXXClassMember()) |
| 1312 | return false; |
| 1313 | |
John McCall | 161755a | 2010-04-06 21:38:20 +0000 | [diff] [blame] | 1314 | const NamedDecl *D = this; |
| 1315 | if (isa<UsingShadowDecl>(D)) |
| 1316 | D = cast<UsingShadowDecl>(D)->getTargetDecl(); |
| 1317 | |
John McCall | 76da55d | 2013-04-16 07:28:30 +0000 | [diff] [blame] | 1318 | if (isa<FieldDecl>(D) || isa<IndirectFieldDecl>(D) || isa<MSPropertyDecl>(D)) |
John McCall | 161755a | 2010-04-06 21:38:20 +0000 | [diff] [blame] | 1319 | return true; |
| 1320 | if (isa<CXXMethodDecl>(D)) |
| 1321 | return cast<CXXMethodDecl>(D)->isInstance(); |
| 1322 | if (isa<FunctionTemplateDecl>(D)) |
| 1323 | return cast<CXXMethodDecl>(cast<FunctionTemplateDecl>(D) |
| 1324 | ->getTemplatedDecl())->isInstance(); |
| 1325 | return false; |
| 1326 | } |
| 1327 | |
Argyrios Kyrtzidis | 5239304 | 2008-11-09 23:41:00 +0000 | [diff] [blame] | 1328 | //===----------------------------------------------------------------------===// |
Argyrios Kyrtzidis | a5d8200 | 2009-08-21 00:31:54 +0000 | [diff] [blame] | 1329 | // DeclaratorDecl Implementation |
| 1330 | //===----------------------------------------------------------------------===// |
| 1331 | |
Douglas Gregor | 1693e15 | 2010-07-06 18:42:40 +0000 | [diff] [blame] | 1332 | template <typename DeclT> |
| 1333 | static SourceLocation getTemplateOrInnerLocStart(const DeclT *decl) { |
| 1334 | if (decl->getNumTemplateParameterLists() > 0) |
| 1335 | return decl->getTemplateParameterList(0)->getTemplateLoc(); |
| 1336 | else |
| 1337 | return decl->getInnerLocStart(); |
| 1338 | } |
| 1339 | |
Argyrios Kyrtzidis | a5d8200 | 2009-08-21 00:31:54 +0000 | [diff] [blame] | 1340 | SourceLocation DeclaratorDecl::getTypeSpecStartLoc() const { |
John McCall | 4e44983 | 2010-05-28 23:32:21 +0000 | [diff] [blame] | 1341 | TypeSourceInfo *TSI = getTypeSourceInfo(); |
| 1342 | if (TSI) return TSI->getTypeLoc().getBeginLoc(); |
Argyrios Kyrtzidis | a5d8200 | 2009-08-21 00:31:54 +0000 | [diff] [blame] | 1343 | return SourceLocation(); |
| 1344 | } |
| 1345 | |
Douglas Gregor | c22b5ff | 2011-02-25 02:25:35 +0000 | [diff] [blame] | 1346 | void DeclaratorDecl::setQualifierInfo(NestedNameSpecifierLoc QualifierLoc) { |
| 1347 | if (QualifierLoc) { |
John McCall | b621766 | 2010-03-15 10:12:16 +0000 | [diff] [blame] | 1348 | // Make sure the extended decl info is allocated. |
| 1349 | if (!hasExtInfo()) { |
| 1350 | // Save (non-extended) type source info pointer. |
| 1351 | TypeSourceInfo *savedTInfo = DeclInfo.get<TypeSourceInfo*>(); |
| 1352 | // Allocate external info struct. |
| 1353 | DeclInfo = new (getASTContext()) ExtInfo; |
| 1354 | // Restore savedTInfo into (extended) decl info. |
| 1355 | getExtInfo()->TInfo = savedTInfo; |
| 1356 | } |
| 1357 | // Set qualifier info. |
Douglas Gregor | c22b5ff | 2011-02-25 02:25:35 +0000 | [diff] [blame] | 1358 | getExtInfo()->QualifierLoc = QualifierLoc; |
Chad Rosier | 3060178 | 2011-08-17 23:08:45 +0000 | [diff] [blame] | 1359 | } else { |
John McCall | b621766 | 2010-03-15 10:12:16 +0000 | [diff] [blame] | 1360 | // Here Qualifier == 0, i.e., we are removing the qualifier (if any). |
John McCall | b621766 | 2010-03-15 10:12:16 +0000 | [diff] [blame] | 1361 | if (hasExtInfo()) { |
Abramo Bagnara | 7f0a915 | 2011-03-18 15:16:37 +0000 | [diff] [blame] | 1362 | if (getExtInfo()->NumTemplParamLists == 0) { |
| 1363 | // Save type source info pointer. |
| 1364 | TypeSourceInfo *savedTInfo = getExtInfo()->TInfo; |
| 1365 | // Deallocate the extended decl info. |
| 1366 | getASTContext().Deallocate(getExtInfo()); |
| 1367 | // Restore savedTInfo into (non-extended) decl info. |
| 1368 | DeclInfo = savedTInfo; |
| 1369 | } |
| 1370 | else |
| 1371 | getExtInfo()->QualifierLoc = QualifierLoc; |
John McCall | b621766 | 2010-03-15 10:12:16 +0000 | [diff] [blame] | 1372 | } |
| 1373 | } |
| 1374 | } |
| 1375 | |
Abramo Bagnara | 7f0a915 | 2011-03-18 15:16:37 +0000 | [diff] [blame] | 1376 | void |
| 1377 | DeclaratorDecl::setTemplateParameterListsInfo(ASTContext &Context, |
| 1378 | unsigned NumTPLists, |
| 1379 | TemplateParameterList **TPLists) { |
| 1380 | assert(NumTPLists > 0); |
| 1381 | // Make sure the extended decl info is allocated. |
| 1382 | if (!hasExtInfo()) { |
| 1383 | // Save (non-extended) type source info pointer. |
| 1384 | TypeSourceInfo *savedTInfo = DeclInfo.get<TypeSourceInfo*>(); |
| 1385 | // Allocate external info struct. |
| 1386 | DeclInfo = new (getASTContext()) ExtInfo; |
| 1387 | // Restore savedTInfo into (extended) decl info. |
| 1388 | getExtInfo()->TInfo = savedTInfo; |
| 1389 | } |
| 1390 | // Set the template parameter lists info. |
| 1391 | getExtInfo()->setTemplateParameterListsInfo(Context, NumTPLists, TPLists); |
| 1392 | } |
| 1393 | |
Douglas Gregor | 1693e15 | 2010-07-06 18:42:40 +0000 | [diff] [blame] | 1394 | SourceLocation DeclaratorDecl::getOuterLocStart() const { |
| 1395 | return getTemplateOrInnerLocStart(this); |
| 1396 | } |
| 1397 | |
Abramo Bagnara | a2026c9 | 2011-03-08 16:41:52 +0000 | [diff] [blame] | 1398 | namespace { |
| 1399 | |
| 1400 | // Helper function: returns true if QT is or contains a type |
| 1401 | // having a postfix component. |
| 1402 | bool typeIsPostfix(clang::QualType QT) { |
| 1403 | while (true) { |
| 1404 | const Type* T = QT.getTypePtr(); |
| 1405 | switch (T->getTypeClass()) { |
| 1406 | default: |
| 1407 | return false; |
| 1408 | case Type::Pointer: |
| 1409 | QT = cast<PointerType>(T)->getPointeeType(); |
| 1410 | break; |
| 1411 | case Type::BlockPointer: |
| 1412 | QT = cast<BlockPointerType>(T)->getPointeeType(); |
| 1413 | break; |
| 1414 | case Type::MemberPointer: |
| 1415 | QT = cast<MemberPointerType>(T)->getPointeeType(); |
| 1416 | break; |
| 1417 | case Type::LValueReference: |
| 1418 | case Type::RValueReference: |
| 1419 | QT = cast<ReferenceType>(T)->getPointeeType(); |
| 1420 | break; |
| 1421 | case Type::PackExpansion: |
| 1422 | QT = cast<PackExpansionType>(T)->getPattern(); |
| 1423 | break; |
| 1424 | case Type::Paren: |
| 1425 | case Type::ConstantArray: |
| 1426 | case Type::DependentSizedArray: |
| 1427 | case Type::IncompleteArray: |
| 1428 | case Type::VariableArray: |
| 1429 | case Type::FunctionProto: |
| 1430 | case Type::FunctionNoProto: |
| 1431 | return true; |
| 1432 | } |
| 1433 | } |
| 1434 | } |
| 1435 | |
| 1436 | } // namespace |
| 1437 | |
| 1438 | SourceRange DeclaratorDecl::getSourceRange() const { |
| 1439 | SourceLocation RangeEnd = getLocation(); |
| 1440 | if (TypeSourceInfo *TInfo = getTypeSourceInfo()) { |
| 1441 | if (typeIsPostfix(TInfo->getType())) |
| 1442 | RangeEnd = TInfo->getTypeLoc().getSourceRange().getEnd(); |
| 1443 | } |
| 1444 | return SourceRange(getOuterLocStart(), RangeEnd); |
| 1445 | } |
| 1446 | |
Abramo Bagnara | 9b93488 | 2010-06-12 08:15:14 +0000 | [diff] [blame] | 1447 | void |
Douglas Gregor | c722ea4 | 2010-06-15 17:44:38 +0000 | [diff] [blame] | 1448 | QualifierInfo::setTemplateParameterListsInfo(ASTContext &Context, |
| 1449 | unsigned NumTPLists, |
Abramo Bagnara | 9b93488 | 2010-06-12 08:15:14 +0000 | [diff] [blame] | 1450 | TemplateParameterList **TPLists) { |
| 1451 | assert((NumTPLists == 0 || TPLists != 0) && |
| 1452 | "Empty array of template parameters with positive size!"); |
Abramo Bagnara | 9b93488 | 2010-06-12 08:15:14 +0000 | [diff] [blame] | 1453 | |
| 1454 | // Free previous template parameters (if any). |
| 1455 | if (NumTemplParamLists > 0) { |
Douglas Gregor | c722ea4 | 2010-06-15 17:44:38 +0000 | [diff] [blame] | 1456 | Context.Deallocate(TemplParamLists); |
Abramo Bagnara | 9b93488 | 2010-06-12 08:15:14 +0000 | [diff] [blame] | 1457 | TemplParamLists = 0; |
| 1458 | NumTemplParamLists = 0; |
| 1459 | } |
| 1460 | // Set info on matched template parameter lists (if any). |
| 1461 | if (NumTPLists > 0) { |
Douglas Gregor | c722ea4 | 2010-06-15 17:44:38 +0000 | [diff] [blame] | 1462 | TemplParamLists = new (Context) TemplateParameterList*[NumTPLists]; |
Abramo Bagnara | 9b93488 | 2010-06-12 08:15:14 +0000 | [diff] [blame] | 1463 | NumTemplParamLists = NumTPLists; |
| 1464 | for (unsigned i = NumTPLists; i-- > 0; ) |
| 1465 | TemplParamLists[i] = TPLists[i]; |
| 1466 | } |
| 1467 | } |
| 1468 | |
Argyrios Kyrtzidis | a5d8200 | 2009-08-21 00:31:54 +0000 | [diff] [blame] | 1469 | //===----------------------------------------------------------------------===// |
Nuno Lopes | 99f06ba | 2008-12-17 23:39:55 +0000 | [diff] [blame] | 1470 | // VarDecl Implementation |
| 1471 | //===----------------------------------------------------------------------===// |
| 1472 | |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 1473 | const char *VarDecl::getStorageClassSpecifierString(StorageClass SC) { |
| 1474 | switch (SC) { |
Peter Collingbourne | 8c25fc5 | 2011-09-19 21:14:35 +0000 | [diff] [blame] | 1475 | case SC_None: break; |
Peter Collingbourne | 8be0c74 | 2011-09-20 12:40:26 +0000 | [diff] [blame] | 1476 | case SC_Auto: return "auto"; |
| 1477 | case SC_Extern: return "extern"; |
| 1478 | case SC_OpenCLWorkGroupLocal: return "<<work-group-local>>"; |
| 1479 | case SC_PrivateExtern: return "__private_extern__"; |
| 1480 | case SC_Register: return "register"; |
| 1481 | case SC_Static: return "static"; |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 1482 | } |
| 1483 | |
Peter Collingbourne | 8be0c74 | 2011-09-20 12:40:26 +0000 | [diff] [blame] | 1484 | llvm_unreachable("Invalid storage class"); |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 1485 | } |
| 1486 | |
Abramo Bagnara | ff676cb | 2011-03-08 08:55:46 +0000 | [diff] [blame] | 1487 | VarDecl *VarDecl::Create(ASTContext &C, DeclContext *DC, |
| 1488 | SourceLocation StartL, SourceLocation IdL, |
John McCall | a93c934 | 2009-12-07 02:54:59 +0000 | [diff] [blame] | 1489 | IdentifierInfo *Id, QualType T, TypeSourceInfo *TInfo, |
Rafael Espindola | d2615cc | 2013-04-03 19:27:57 +0000 | [diff] [blame] | 1490 | StorageClass S) { |
| 1491 | return new (C) VarDecl(Var, DC, StartL, IdL, Id, T, TInfo, S); |
Nuno Lopes | 99f06ba | 2008-12-17 23:39:55 +0000 | [diff] [blame] | 1492 | } |
| 1493 | |
Douglas Gregor | 1e68ecc | 2012-01-05 21:55:30 +0000 | [diff] [blame] | 1494 | VarDecl *VarDecl::CreateDeserialized(ASTContext &C, unsigned ID) { |
| 1495 | void *Mem = AllocateDeserializedDecl(C, ID, sizeof(VarDecl)); |
| 1496 | return new (Mem) VarDecl(Var, 0, SourceLocation(), SourceLocation(), 0, |
Rafael Espindola | d2615cc | 2013-04-03 19:27:57 +0000 | [diff] [blame] | 1497 | QualType(), 0, SC_None); |
Douglas Gregor | 1e68ecc | 2012-01-05 21:55:30 +0000 | [diff] [blame] | 1498 | } |
| 1499 | |
Douglas Gregor | 381d34e | 2010-12-06 18:36:25 +0000 | [diff] [blame] | 1500 | void VarDecl::setStorageClass(StorageClass SC) { |
| 1501 | assert(isLegalForVariable(SC)); |
John McCall | f1e4fbf | 2011-05-01 02:13:58 +0000 | [diff] [blame] | 1502 | VarDeclBits.SClass = SC; |
Douglas Gregor | 381d34e | 2010-12-06 18:36:25 +0000 | [diff] [blame] | 1503 | } |
| 1504 | |
Douglas Gregor | 1693e15 | 2010-07-06 18:42:40 +0000 | [diff] [blame] | 1505 | SourceRange VarDecl::getSourceRange() const { |
Argyrios Kyrtzidis | d69f31c | 2012-10-08 23:08:41 +0000 | [diff] [blame] | 1506 | if (const Expr *Init = getInit()) { |
| 1507 | SourceLocation InitEnd = Init->getLocEnd(); |
Nico Weber | 3a344f9 | 2013-01-22 17:00:09 +0000 | [diff] [blame] | 1508 | // If Init is implicit, ignore its source range and fallback on |
| 1509 | // DeclaratorDecl::getSourceRange() to handle postfix elements. |
| 1510 | if (InitEnd.isValid() && InitEnd != getLocation()) |
Argyrios Kyrtzidis | d69f31c | 2012-10-08 23:08:41 +0000 | [diff] [blame] | 1511 | return SourceRange(getOuterLocStart(), InitEnd); |
| 1512 | } |
Abramo Bagnara | a2026c9 | 2011-03-08 16:41:52 +0000 | [diff] [blame] | 1513 | return DeclaratorDecl::getSourceRange(); |
Argyrios Kyrtzidis | 55d608c | 2009-06-20 08:09:14 +0000 | [diff] [blame] | 1514 | } |
| 1515 | |
Rafael Espindola | 7ac928b | 2013-01-04 21:18:45 +0000 | [diff] [blame] | 1516 | template<typename T> |
Rafael Espindola | 950fee2 | 2013-02-14 01:18:37 +0000 | [diff] [blame] | 1517 | static LanguageLinkage getLanguageLinkageTemplate(const T &D) { |
Rafael Espindola | d2fdd42 | 2013-02-14 01:47:04 +0000 | [diff] [blame] | 1518 | // C++ [dcl.link]p1: All function types, function names with external linkage, |
| 1519 | // and variable names with external linkage have a language linkage. |
Rafael Espindola | 181e3ec | 2013-05-13 00:12:11 +0000 | [diff] [blame] | 1520 | if (!D.hasExternalFormalLinkage()) |
Rafael Espindola | d2fdd42 | 2013-02-14 01:47:04 +0000 | [diff] [blame] | 1521 | return NoLanguageLinkage; |
| 1522 | |
| 1523 | // Language linkage is a C++ concept, but saying that everything else in C has |
Rafael Espindola | 2b721f5 | 2013-01-04 20:41:40 +0000 | [diff] [blame] | 1524 | // C language linkage fits the implementation nicely. |
Rafael Espindola | 78eeba8 | 2012-12-28 14:21:58 +0000 | [diff] [blame] | 1525 | ASTContext &Context = D.getASTContext(); |
| 1526 | if (!Context.getLangOpts().CPlusPlus) |
Rafael Espindola | 950fee2 | 2013-02-14 01:18:37 +0000 | [diff] [blame] | 1527 | return CLanguageLinkage; |
| 1528 | |
Rafael Espindola | d2fdd42 | 2013-02-14 01:47:04 +0000 | [diff] [blame] | 1529 | // C++ [dcl.link]p4: A C language linkage is ignored in determining the |
| 1530 | // language linkage of the names of class members and the function type of |
| 1531 | // class member functions. |
Rafael Espindola | 78eeba8 | 2012-12-28 14:21:58 +0000 | [diff] [blame] | 1532 | const DeclContext *DC = D.getDeclContext(); |
| 1533 | if (DC->isRecord()) |
Rafael Espindola | 950fee2 | 2013-02-14 01:18:37 +0000 | [diff] [blame] | 1534 | return CXXLanguageLinkage; |
Rafael Espindola | 78eeba8 | 2012-12-28 14:21:58 +0000 | [diff] [blame] | 1535 | |
| 1536 | // If the first decl is in an extern "C" context, any other redeclaration |
| 1537 | // will have C language linkage. If the first one is not in an extern "C" |
| 1538 | // context, we would have reported an error for any other decl being in one. |
Rafael Espindola | d8ffd0b | 2013-05-05 20:15:21 +0000 | [diff] [blame] | 1539 | if (isFirstInExternCContext(&D)) |
Rafael Espindola | 950fee2 | 2013-02-14 01:18:37 +0000 | [diff] [blame] | 1540 | return CLanguageLinkage; |
| 1541 | return CXXLanguageLinkage; |
Rafael Espindola | 78eeba8 | 2012-12-28 14:21:58 +0000 | [diff] [blame] | 1542 | } |
| 1543 | |
Rafael Espindola | 2d1b096 | 2013-03-14 03:07:35 +0000 | [diff] [blame] | 1544 | template<typename T> |
| 1545 | static bool isExternCTemplate(const T &D) { |
| 1546 | // Since the context is ignored for class members, they can only have C++ |
| 1547 | // language linkage or no language linkage. |
| 1548 | const DeclContext *DC = D.getDeclContext(); |
| 1549 | if (DC->isRecord()) { |
| 1550 | assert(D.getASTContext().getLangOpts().CPlusPlus); |
| 1551 | return false; |
| 1552 | } |
| 1553 | |
| 1554 | return D.getLanguageLinkage() == CLanguageLinkage; |
| 1555 | } |
| 1556 | |
Rafael Espindola | 950fee2 | 2013-02-14 01:18:37 +0000 | [diff] [blame] | 1557 | LanguageLinkage VarDecl::getLanguageLinkage() const { |
| 1558 | return getLanguageLinkageTemplate(*this); |
Rafael Espindola | 78eeba8 | 2012-12-28 14:21:58 +0000 | [diff] [blame] | 1559 | } |
| 1560 | |
Rafael Espindola | 2d1b096 | 2013-03-14 03:07:35 +0000 | [diff] [blame] | 1561 | bool VarDecl::isExternC() const { |
| 1562 | return isExternCTemplate(*this); |
| 1563 | } |
| 1564 | |
Rafael Espindola | d8ffd0b | 2013-05-05 20:15:21 +0000 | [diff] [blame] | 1565 | static bool isLinkageSpecContext(const DeclContext *DC, |
| 1566 | LinkageSpecDecl::LanguageIDs ID) { |
| 1567 | while (DC->getDeclKind() != Decl::TranslationUnit) { |
| 1568 | if (DC->getDeclKind() == Decl::LinkageSpec) |
| 1569 | return cast<LinkageSpecDecl>(DC)->getLanguage() == ID; |
| 1570 | DC = DC->getParent(); |
| 1571 | } |
| 1572 | return false; |
| 1573 | } |
| 1574 | |
| 1575 | template <typename T> |
| 1576 | static bool isInLanguageSpecContext(T *D, LinkageSpecDecl::LanguageIDs ID) { |
| 1577 | return isLinkageSpecContext(D->getLexicalDeclContext(), ID); |
| 1578 | } |
| 1579 | |
| 1580 | bool VarDecl::isInExternCContext() const { |
| 1581 | return isInLanguageSpecContext(this, LinkageSpecDecl::lang_c); |
| 1582 | } |
| 1583 | |
| 1584 | bool VarDecl::isInExternCXXContext() const { |
| 1585 | return isInLanguageSpecContext(this, LinkageSpecDecl::lang_cxx); |
| 1586 | } |
| 1587 | |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 1588 | VarDecl *VarDecl::getCanonicalDecl() { |
| 1589 | return getFirstDeclaration(); |
| 1590 | } |
| 1591 | |
Daniel Dunbar | 3d13c5a | 2012-03-09 01:51:51 +0000 | [diff] [blame] | 1592 | VarDecl::DefinitionKind VarDecl::isThisDeclarationADefinition( |
| 1593 | ASTContext &C) const |
| 1594 | { |
Sebastian Redl | e9d12b6 | 2010-01-31 22:27:38 +0000 | [diff] [blame] | 1595 | // C++ [basic.def]p2: |
| 1596 | // A declaration is a definition unless [...] it contains the 'extern' |
| 1597 | // specifier or a linkage-specification and neither an initializer [...], |
| 1598 | // it declares a static data member in a class declaration [...]. |
| 1599 | // C++ [temp.expl.spec]p15: |
| 1600 | // An explicit specialization of a static data member of a template is a |
| 1601 | // definition if the declaration includes an initializer; otherwise, it is |
| 1602 | // a declaration. |
| 1603 | if (isStaticDataMember()) { |
| 1604 | if (isOutOfLine() && (hasInit() || |
| 1605 | getTemplateSpecializationKind() != TSK_ExplicitSpecialization)) |
| 1606 | return Definition; |
| 1607 | else |
| 1608 | return DeclarationOnly; |
| 1609 | } |
| 1610 | // C99 6.7p5: |
| 1611 | // A definition of an identifier is a declaration for that identifier that |
| 1612 | // [...] causes storage to be reserved for that object. |
| 1613 | // Note: that applies for all non-file-scope objects. |
| 1614 | // C99 6.9.2p1: |
| 1615 | // If the declaration of an identifier for an object has file scope and an |
| 1616 | // initializer, the declaration is an external definition for the identifier |
| 1617 | if (hasInit()) |
| 1618 | return Definition; |
Rafael Espindola | 65dfa2b | 2013-04-25 12:11:36 +0000 | [diff] [blame] | 1619 | |
Sebastian Redl | e9d12b6 | 2010-01-31 22:27:38 +0000 | [diff] [blame] | 1620 | if (hasExternalStorage()) |
| 1621 | return DeclarationOnly; |
Rafael Espindola | 3778300 | 2013-03-07 01:42:44 +0000 | [diff] [blame] | 1622 | |
Rafael Espindola | 65dfa2b | 2013-04-25 12:11:36 +0000 | [diff] [blame] | 1623 | // [dcl.link] p7: |
| 1624 | // A declaration directly contained in a linkage-specification is treated |
| 1625 | // as if it contains the extern specifier for the purpose of determining |
| 1626 | // the linkage of the declared name and whether it is a definition. |
Rafael Espindola | e5e575d | 2013-04-26 01:30:23 +0000 | [diff] [blame] | 1627 | if (isSingleLineExternC(*this)) |
| 1628 | return DeclarationOnly; |
Rafael Espindola | 65dfa2b | 2013-04-25 12:11:36 +0000 | [diff] [blame] | 1629 | |
Sebastian Redl | e9d12b6 | 2010-01-31 22:27:38 +0000 | [diff] [blame] | 1630 | // C99 6.9.2p2: |
| 1631 | // A declaration of an object that has file scope without an initializer, |
| 1632 | // and without a storage class specifier or the scs 'static', constitutes |
| 1633 | // a tentative definition. |
| 1634 | // No such thing in C++. |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 1635 | if (!C.getLangOpts().CPlusPlus && isFileVarDecl()) |
Sebastian Redl | e9d12b6 | 2010-01-31 22:27:38 +0000 | [diff] [blame] | 1636 | return TentativeDefinition; |
| 1637 | |
| 1638 | // What's left is (in C, block-scope) declarations without initializers or |
| 1639 | // external storage. These are definitions. |
| 1640 | return Definition; |
| 1641 | } |
| 1642 | |
Sebastian Redl | e9d12b6 | 2010-01-31 22:27:38 +0000 | [diff] [blame] | 1643 | VarDecl *VarDecl::getActingDefinition() { |
| 1644 | DefinitionKind Kind = isThisDeclarationADefinition(); |
| 1645 | if (Kind != TentativeDefinition) |
| 1646 | return 0; |
| 1647 | |
Chris Lattner | f0ed9ef | 2010-06-14 18:31:46 +0000 | [diff] [blame] | 1648 | VarDecl *LastTentative = 0; |
Sebastian Redl | e9d12b6 | 2010-01-31 22:27:38 +0000 | [diff] [blame] | 1649 | VarDecl *First = getFirstDeclaration(); |
| 1650 | for (redecl_iterator I = First->redecls_begin(), E = First->redecls_end(); |
| 1651 | I != E; ++I) { |
| 1652 | Kind = (*I)->isThisDeclarationADefinition(); |
| 1653 | if (Kind == Definition) |
| 1654 | return 0; |
| 1655 | else if (Kind == TentativeDefinition) |
| 1656 | LastTentative = *I; |
| 1657 | } |
| 1658 | return LastTentative; |
| 1659 | } |
| 1660 | |
| 1661 | bool VarDecl::isTentativeDefinitionNow() const { |
| 1662 | DefinitionKind Kind = isThisDeclarationADefinition(); |
| 1663 | if (Kind != TentativeDefinition) |
| 1664 | return false; |
| 1665 | |
| 1666 | for (redecl_iterator I = redecls_begin(), E = redecls_end(); I != E; ++I) { |
| 1667 | if ((*I)->isThisDeclarationADefinition() == Definition) |
| 1668 | return false; |
| 1669 | } |
Sebastian Redl | 31310a2 | 2010-02-01 20:16:42 +0000 | [diff] [blame] | 1670 | return true; |
Sebastian Redl | e9d12b6 | 2010-01-31 22:27:38 +0000 | [diff] [blame] | 1671 | } |
| 1672 | |
Daniel Dunbar | 3d13c5a | 2012-03-09 01:51:51 +0000 | [diff] [blame] | 1673 | VarDecl *VarDecl::getDefinition(ASTContext &C) { |
Sebastian Redl | e2c52d2 | 2010-02-02 17:55:12 +0000 | [diff] [blame] | 1674 | VarDecl *First = getFirstDeclaration(); |
| 1675 | for (redecl_iterator I = First->redecls_begin(), E = First->redecls_end(); |
| 1676 | I != E; ++I) { |
Daniel Dunbar | 3d13c5a | 2012-03-09 01:51:51 +0000 | [diff] [blame] | 1677 | if ((*I)->isThisDeclarationADefinition(C) == Definition) |
Sebastian Redl | 31310a2 | 2010-02-01 20:16:42 +0000 | [diff] [blame] | 1678 | return *I; |
| 1679 | } |
| 1680 | return 0; |
| 1681 | } |
| 1682 | |
Daniel Dunbar | 3d13c5a | 2012-03-09 01:51:51 +0000 | [diff] [blame] | 1683 | VarDecl::DefinitionKind VarDecl::hasDefinition(ASTContext &C) const { |
John McCall | 110e8e5 | 2010-10-29 22:22:43 +0000 | [diff] [blame] | 1684 | DefinitionKind Kind = DeclarationOnly; |
| 1685 | |
| 1686 | const VarDecl *First = getFirstDeclaration(); |
| 1687 | for (redecl_iterator I = First->redecls_begin(), E = First->redecls_end(); |
Daniel Dunbar | 047da19 | 2012-03-06 23:52:46 +0000 | [diff] [blame] | 1688 | I != E; ++I) { |
Daniel Dunbar | 3d13c5a | 2012-03-09 01:51:51 +0000 | [diff] [blame] | 1689 | Kind = std::max(Kind, (*I)->isThisDeclarationADefinition(C)); |
Daniel Dunbar | 047da19 | 2012-03-06 23:52:46 +0000 | [diff] [blame] | 1690 | if (Kind == Definition) |
| 1691 | break; |
| 1692 | } |
John McCall | 110e8e5 | 2010-10-29 22:22:43 +0000 | [diff] [blame] | 1693 | |
| 1694 | return Kind; |
| 1695 | } |
| 1696 | |
Sebastian Redl | 31310a2 | 2010-02-01 20:16:42 +0000 | [diff] [blame] | 1697 | const Expr *VarDecl::getAnyInitializer(const VarDecl *&D) const { |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 1698 | redecl_iterator I = redecls_begin(), E = redecls_end(); |
| 1699 | while (I != E && !I->getInit()) |
| 1700 | ++I; |
| 1701 | |
| 1702 | if (I != E) { |
Sebastian Redl | 31310a2 | 2010-02-01 20:16:42 +0000 | [diff] [blame] | 1703 | D = *I; |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 1704 | return I->getInit(); |
| 1705 | } |
| 1706 | return 0; |
| 1707 | } |
| 1708 | |
Douglas Gregor | 1028c9f | 2009-10-14 21:29:40 +0000 | [diff] [blame] | 1709 | bool VarDecl::isOutOfLine() const { |
Douglas Gregor | da2142f | 2011-02-19 18:51:44 +0000 | [diff] [blame] | 1710 | if (Decl::isOutOfLine()) |
Douglas Gregor | 1028c9f | 2009-10-14 21:29:40 +0000 | [diff] [blame] | 1711 | return true; |
Chandler Carruth | 8761d68 | 2010-02-21 07:08:09 +0000 | [diff] [blame] | 1712 | |
| 1713 | if (!isStaticDataMember()) |
| 1714 | return false; |
| 1715 | |
Douglas Gregor | 1028c9f | 2009-10-14 21:29:40 +0000 | [diff] [blame] | 1716 | // If this static data member was instantiated from a static data member of |
| 1717 | // a class template, check whether that static data member was defined |
| 1718 | // out-of-line. |
| 1719 | if (VarDecl *VD = getInstantiatedFromStaticDataMember()) |
| 1720 | return VD->isOutOfLine(); |
| 1721 | |
| 1722 | return false; |
| 1723 | } |
| 1724 | |
Douglas Gregor | 0d03514 | 2009-10-27 18:42:08 +0000 | [diff] [blame] | 1725 | VarDecl *VarDecl::getOutOfLineDefinition() { |
| 1726 | if (!isStaticDataMember()) |
| 1727 | return 0; |
| 1728 | |
| 1729 | for (VarDecl::redecl_iterator RD = redecls_begin(), RDEnd = redecls_end(); |
| 1730 | RD != RDEnd; ++RD) { |
| 1731 | if (RD->getLexicalDeclContext()->isFileContext()) |
| 1732 | return *RD; |
| 1733 | } |
| 1734 | |
| 1735 | return 0; |
| 1736 | } |
| 1737 | |
Douglas Gregor | 838db38 | 2010-02-11 01:19:42 +0000 | [diff] [blame] | 1738 | void VarDecl::setInit(Expr *I) { |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 1739 | if (EvaluatedStmt *Eval = Init.dyn_cast<EvaluatedStmt *>()) { |
| 1740 | Eval->~EvaluatedStmt(); |
Douglas Gregor | 838db38 | 2010-02-11 01:19:42 +0000 | [diff] [blame] | 1741 | getASTContext().Deallocate(Eval); |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 1742 | } |
| 1743 | |
| 1744 | Init = I; |
| 1745 | } |
| 1746 | |
Daniel Dunbar | 3d13c5a | 2012-03-09 01:51:51 +0000 | [diff] [blame] | 1747 | bool VarDecl::isUsableInConstantExpressions(ASTContext &C) const { |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 1748 | const LangOptions &Lang = C.getLangOpts(); |
Richard Smith | 1d238ea | 2011-12-21 02:55:12 +0000 | [diff] [blame] | 1749 | |
Richard Smith | 1658133 | 2012-03-02 04:14:40 +0000 | [diff] [blame] | 1750 | if (!Lang.CPlusPlus) |
| 1751 | return false; |
| 1752 | |
| 1753 | // In C++11, any variable of reference type can be used in a constant |
| 1754 | // expression if it is initialized by a constant expression. |
Richard Smith | 80ad52f | 2013-01-02 11:42:31 +0000 | [diff] [blame] | 1755 | if (Lang.CPlusPlus11 && getType()->isReferenceType()) |
Richard Smith | 1658133 | 2012-03-02 04:14:40 +0000 | [diff] [blame] | 1756 | return true; |
| 1757 | |
| 1758 | // Only const objects can be used in constant expressions in C++. C++98 does |
Richard Smith | 1d238ea | 2011-12-21 02:55:12 +0000 | [diff] [blame] | 1759 | // not require the variable to be non-volatile, but we consider this to be a |
| 1760 | // defect. |
Richard Smith | 1658133 | 2012-03-02 04:14:40 +0000 | [diff] [blame] | 1761 | if (!getType().isConstQualified() || getType().isVolatileQualified()) |
Richard Smith | 1d238ea | 2011-12-21 02:55:12 +0000 | [diff] [blame] | 1762 | return false; |
| 1763 | |
| 1764 | // In C++, const, non-volatile variables of integral or enumeration types |
| 1765 | // can be used in constant expressions. |
| 1766 | if (getType()->isIntegralOrEnumerationType()) |
| 1767 | return true; |
| 1768 | |
Richard Smith | 1658133 | 2012-03-02 04:14:40 +0000 | [diff] [blame] | 1769 | // Additionally, in C++11, non-volatile constexpr variables can be used in |
| 1770 | // constant expressions. |
Richard Smith | 80ad52f | 2013-01-02 11:42:31 +0000 | [diff] [blame] | 1771 | return Lang.CPlusPlus11 && isConstexpr(); |
Richard Smith | 1d238ea | 2011-12-21 02:55:12 +0000 | [diff] [blame] | 1772 | } |
| 1773 | |
Richard Smith | 099e7f6 | 2011-12-19 06:19:21 +0000 | [diff] [blame] | 1774 | /// Convert the initializer for this declaration to the elaborated EvaluatedStmt |
| 1775 | /// form, which contains extra information on the evaluated value of the |
| 1776 | /// initializer. |
| 1777 | EvaluatedStmt *VarDecl::ensureEvaluatedStmt() const { |
| 1778 | EvaluatedStmt *Eval = Init.dyn_cast<EvaluatedStmt *>(); |
| 1779 | if (!Eval) { |
| 1780 | Stmt *S = Init.get<Stmt *>(); |
| 1781 | Eval = new (getASTContext()) EvaluatedStmt; |
| 1782 | Eval->Value = S; |
| 1783 | Init = Eval; |
| 1784 | } |
| 1785 | return Eval; |
| 1786 | } |
| 1787 | |
Richard Smith | 2d6a567 | 2012-01-14 04:30:29 +0000 | [diff] [blame] | 1788 | APValue *VarDecl::evaluateValue() const { |
Dmitri Gribenko | cfa88f8 | 2013-01-12 19:30:44 +0000 | [diff] [blame] | 1789 | SmallVector<PartialDiagnosticAt, 8> Notes; |
Richard Smith | 2d6a567 | 2012-01-14 04:30:29 +0000 | [diff] [blame] | 1790 | return evaluateValue(Notes); |
| 1791 | } |
| 1792 | |
| 1793 | APValue *VarDecl::evaluateValue( |
Dmitri Gribenko | cfa88f8 | 2013-01-12 19:30:44 +0000 | [diff] [blame] | 1794 | SmallVectorImpl<PartialDiagnosticAt> &Notes) const { |
Richard Smith | 099e7f6 | 2011-12-19 06:19:21 +0000 | [diff] [blame] | 1795 | EvaluatedStmt *Eval = ensureEvaluatedStmt(); |
| 1796 | |
| 1797 | // We only produce notes indicating why an initializer is non-constant the |
| 1798 | // first time it is evaluated. FIXME: The notes won't always be emitted the |
| 1799 | // first time we try evaluation, so might not be produced at all. |
| 1800 | if (Eval->WasEvaluated) |
Richard Smith | 2d6a567 | 2012-01-14 04:30:29 +0000 | [diff] [blame] | 1801 | return Eval->Evaluated.isUninit() ? 0 : &Eval->Evaluated; |
Richard Smith | 099e7f6 | 2011-12-19 06:19:21 +0000 | [diff] [blame] | 1802 | |
| 1803 | const Expr *Init = cast<Expr>(Eval->Value); |
| 1804 | assert(!Init->isValueDependent()); |
| 1805 | |
| 1806 | if (Eval->IsEvaluating) { |
| 1807 | // FIXME: Produce a diagnostic for self-initialization. |
| 1808 | Eval->CheckedICE = true; |
| 1809 | Eval->IsICE = false; |
Richard Smith | 2d6a567 | 2012-01-14 04:30:29 +0000 | [diff] [blame] | 1810 | return 0; |
Richard Smith | 099e7f6 | 2011-12-19 06:19:21 +0000 | [diff] [blame] | 1811 | } |
| 1812 | |
| 1813 | Eval->IsEvaluating = true; |
| 1814 | |
| 1815 | bool Result = Init->EvaluateAsInitializer(Eval->Evaluated, getASTContext(), |
| 1816 | this, Notes); |
| 1817 | |
| 1818 | // Ensure the result is an uninitialized APValue if evaluation fails. |
| 1819 | if (!Result) |
| 1820 | Eval->Evaluated = APValue(); |
| 1821 | |
| 1822 | Eval->IsEvaluating = false; |
| 1823 | Eval->WasEvaluated = true; |
| 1824 | |
| 1825 | // In C++11, we have determined whether the initializer was a constant |
| 1826 | // expression as a side-effect. |
Richard Smith | 80ad52f | 2013-01-02 11:42:31 +0000 | [diff] [blame] | 1827 | if (getASTContext().getLangOpts().CPlusPlus11 && !Eval->CheckedICE) { |
Richard Smith | 099e7f6 | 2011-12-19 06:19:21 +0000 | [diff] [blame] | 1828 | Eval->CheckedICE = true; |
Eli Friedman | 210386e | 2012-02-06 21:50:18 +0000 | [diff] [blame] | 1829 | Eval->IsICE = Result && Notes.empty(); |
Richard Smith | 099e7f6 | 2011-12-19 06:19:21 +0000 | [diff] [blame] | 1830 | } |
| 1831 | |
Richard Smith | 2d6a567 | 2012-01-14 04:30:29 +0000 | [diff] [blame] | 1832 | return Result ? &Eval->Evaluated : 0; |
Richard Smith | 099e7f6 | 2011-12-19 06:19:21 +0000 | [diff] [blame] | 1833 | } |
| 1834 | |
| 1835 | bool VarDecl::checkInitIsICE() const { |
John McCall | 7307643 | 2012-01-05 00:13:19 +0000 | [diff] [blame] | 1836 | // Initializers of weak variables are never ICEs. |
| 1837 | if (isWeak()) |
| 1838 | return false; |
| 1839 | |
Richard Smith | 099e7f6 | 2011-12-19 06:19:21 +0000 | [diff] [blame] | 1840 | EvaluatedStmt *Eval = ensureEvaluatedStmt(); |
| 1841 | if (Eval->CheckedICE) |
| 1842 | // We have already checked whether this subexpression is an |
| 1843 | // integral constant expression. |
| 1844 | return Eval->IsICE; |
| 1845 | |
| 1846 | const Expr *Init = cast<Expr>(Eval->Value); |
| 1847 | assert(!Init->isValueDependent()); |
| 1848 | |
| 1849 | // In C++11, evaluate the initializer to check whether it's a constant |
| 1850 | // expression. |
Richard Smith | 80ad52f | 2013-01-02 11:42:31 +0000 | [diff] [blame] | 1851 | if (getASTContext().getLangOpts().CPlusPlus11) { |
Dmitri Gribenko | cfa88f8 | 2013-01-12 19:30:44 +0000 | [diff] [blame] | 1852 | SmallVector<PartialDiagnosticAt, 8> Notes; |
Richard Smith | 099e7f6 | 2011-12-19 06:19:21 +0000 | [diff] [blame] | 1853 | evaluateValue(Notes); |
| 1854 | return Eval->IsICE; |
| 1855 | } |
| 1856 | |
| 1857 | // It's an ICE whether or not the definition we found is |
| 1858 | // out-of-line. See DR 721 and the discussion in Clang PR |
| 1859 | // 6206 for details. |
| 1860 | |
| 1861 | if (Eval->CheckingICE) |
| 1862 | return false; |
| 1863 | Eval->CheckingICE = true; |
| 1864 | |
| 1865 | Eval->IsICE = Init->isIntegerConstantExpr(getASTContext()); |
| 1866 | Eval->CheckingICE = false; |
| 1867 | Eval->CheckedICE = true; |
| 1868 | return Eval->IsICE; |
| 1869 | } |
| 1870 | |
Douglas Gregor | 03e8003 | 2011-06-21 17:03:29 +0000 | [diff] [blame] | 1871 | bool VarDecl::extendsLifetimeOfTemporary() const { |
Douglas Gregor | 0b58108 | 2011-06-21 18:20:46 +0000 | [diff] [blame] | 1872 | assert(getType()->isReferenceType() &&"Non-references never extend lifetime"); |
Douglas Gregor | 03e8003 | 2011-06-21 17:03:29 +0000 | [diff] [blame] | 1873 | |
| 1874 | const Expr *E = getInit(); |
| 1875 | if (!E) |
| 1876 | return false; |
| 1877 | |
| 1878 | if (const ExprWithCleanups *Cleanups = dyn_cast<ExprWithCleanups>(E)) |
| 1879 | E = Cleanups->getSubExpr(); |
| 1880 | |
| 1881 | return isa<MaterializeTemporaryExpr>(E); |
| 1882 | } |
| 1883 | |
Douglas Gregor | 1028c9f | 2009-10-14 21:29:40 +0000 | [diff] [blame] | 1884 | VarDecl *VarDecl::getInstantiatedFromStaticDataMember() const { |
Douglas Gregor | b3ae4fc | 2009-10-12 20:18:28 +0000 | [diff] [blame] | 1885 | if (MemberSpecializationInfo *MSI = getMemberSpecializationInfo()) |
Douglas Gregor | 251b4ff | 2009-10-08 07:24:58 +0000 | [diff] [blame] | 1886 | return cast<VarDecl>(MSI->getInstantiatedFrom()); |
| 1887 | |
| 1888 | return 0; |
| 1889 | } |
| 1890 | |
Douglas Gregor | 663b5a0 | 2009-10-14 20:14:33 +0000 | [diff] [blame] | 1891 | TemplateSpecializationKind VarDecl::getTemplateSpecializationKind() const { |
Sebastian Redl | e9d12b6 | 2010-01-31 22:27:38 +0000 | [diff] [blame] | 1892 | if (MemberSpecializationInfo *MSI = getMemberSpecializationInfo()) |
Douglas Gregor | 251b4ff | 2009-10-08 07:24:58 +0000 | [diff] [blame] | 1893 | return MSI->getTemplateSpecializationKind(); |
| 1894 | |
| 1895 | return TSK_Undeclared; |
| 1896 | } |
| 1897 | |
Douglas Gregor | 1028c9f | 2009-10-14 21:29:40 +0000 | [diff] [blame] | 1898 | MemberSpecializationInfo *VarDecl::getMemberSpecializationInfo() const { |
Douglas Gregor | b3ae4fc | 2009-10-12 20:18:28 +0000 | [diff] [blame] | 1899 | return getASTContext().getInstantiatedFromStaticDataMember(this); |
| 1900 | } |
| 1901 | |
Douglas Gregor | 0a897e3 | 2009-10-15 17:21:20 +0000 | [diff] [blame] | 1902 | void VarDecl::setTemplateSpecializationKind(TemplateSpecializationKind TSK, |
| 1903 | SourceLocation PointOfInstantiation) { |
Douglas Gregor | b3ae4fc | 2009-10-12 20:18:28 +0000 | [diff] [blame] | 1904 | MemberSpecializationInfo *MSI = getMemberSpecializationInfo(); |
Douglas Gregor | 251b4ff | 2009-10-08 07:24:58 +0000 | [diff] [blame] | 1905 | assert(MSI && "Not an instantiated static data member?"); |
| 1906 | MSI->setTemplateSpecializationKind(TSK); |
Douglas Gregor | 0a897e3 | 2009-10-15 17:21:20 +0000 | [diff] [blame] | 1907 | if (TSK != TSK_ExplicitSpecialization && |
| 1908 | PointOfInstantiation.isValid() && |
| 1909 | MSI->getPointOfInstantiation().isInvalid()) |
| 1910 | MSI->setPointOfInstantiation(PointOfInstantiation); |
Douglas Gregor | 7caa682 | 2009-07-24 20:34:43 +0000 | [diff] [blame] | 1911 | } |
| 1912 | |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 1913 | //===----------------------------------------------------------------------===// |
| 1914 | // ParmVarDecl Implementation |
| 1915 | //===----------------------------------------------------------------------===// |
Douglas Gregor | 275a369 | 2009-03-10 23:43:53 +0000 | [diff] [blame] | 1916 | |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 1917 | ParmVarDecl *ParmVarDecl::Create(ASTContext &C, DeclContext *DC, |
Abramo Bagnara | ff676cb | 2011-03-08 08:55:46 +0000 | [diff] [blame] | 1918 | SourceLocation StartLoc, |
| 1919 | SourceLocation IdLoc, IdentifierInfo *Id, |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 1920 | QualType T, TypeSourceInfo *TInfo, |
Rafael Espindola | d2615cc | 2013-04-03 19:27:57 +0000 | [diff] [blame] | 1921 | StorageClass S, Expr *DefArg) { |
Abramo Bagnara | ff676cb | 2011-03-08 08:55:46 +0000 | [diff] [blame] | 1922 | return new (C) ParmVarDecl(ParmVar, DC, StartLoc, IdLoc, Id, T, TInfo, |
Rafael Espindola | d2615cc | 2013-04-03 19:27:57 +0000 | [diff] [blame] | 1923 | S, DefArg); |
Douglas Gregor | 275a369 | 2009-03-10 23:43:53 +0000 | [diff] [blame] | 1924 | } |
| 1925 | |
Douglas Gregor | 1e68ecc | 2012-01-05 21:55:30 +0000 | [diff] [blame] | 1926 | ParmVarDecl *ParmVarDecl::CreateDeserialized(ASTContext &C, unsigned ID) { |
| 1927 | void *Mem = AllocateDeserializedDecl(C, ID, sizeof(ParmVarDecl)); |
| 1928 | return new (Mem) ParmVarDecl(ParmVar, 0, SourceLocation(), SourceLocation(), |
Rafael Espindola | d2615cc | 2013-04-03 19:27:57 +0000 | [diff] [blame] | 1929 | 0, QualType(), 0, SC_None, 0); |
Douglas Gregor | 1e68ecc | 2012-01-05 21:55:30 +0000 | [diff] [blame] | 1930 | } |
| 1931 | |
Argyrios Kyrtzidis | 0bfe83b | 2011-07-30 17:23:26 +0000 | [diff] [blame] | 1932 | SourceRange ParmVarDecl::getSourceRange() const { |
| 1933 | if (!hasInheritedDefaultArg()) { |
| 1934 | SourceRange ArgRange = getDefaultArgRange(); |
| 1935 | if (ArgRange.isValid()) |
| 1936 | return SourceRange(getOuterLocStart(), ArgRange.getEnd()); |
| 1937 | } |
| 1938 | |
Argyrios Kyrtzidis | 673c5d5 | 2013-04-17 01:56:48 +0000 | [diff] [blame] | 1939 | // DeclaratorDecl considers the range of postfix types as overlapping with the |
| 1940 | // declaration name, but this is not the case with parameters in ObjC methods. |
| 1941 | if (isa<ObjCMethodDecl>(getDeclContext())) |
| 1942 | return SourceRange(DeclaratorDecl::getLocStart(), getLocation()); |
| 1943 | |
Argyrios Kyrtzidis | 0bfe83b | 2011-07-30 17:23:26 +0000 | [diff] [blame] | 1944 | return DeclaratorDecl::getSourceRange(); |
| 1945 | } |
| 1946 | |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 1947 | Expr *ParmVarDecl::getDefaultArg() { |
| 1948 | assert(!hasUnparsedDefaultArg() && "Default argument is not yet parsed!"); |
| 1949 | assert(!hasUninstantiatedDefaultArg() && |
| 1950 | "Default argument is not yet instantiated!"); |
| 1951 | |
| 1952 | Expr *Arg = getInit(); |
John McCall | 4765fa0 | 2010-12-06 08:20:24 +0000 | [diff] [blame] | 1953 | if (ExprWithCleanups *E = dyn_cast_or_null<ExprWithCleanups>(Arg)) |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 1954 | return E->getSubExpr(); |
Douglas Gregor | 275a369 | 2009-03-10 23:43:53 +0000 | [diff] [blame] | 1955 | |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 1956 | return Arg; |
| 1957 | } |
| 1958 | |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 1959 | SourceRange ParmVarDecl::getDefaultArgRange() const { |
| 1960 | if (const Expr *E = getInit()) |
| 1961 | return E->getSourceRange(); |
| 1962 | |
| 1963 | if (hasUninstantiatedDefaultArg()) |
| 1964 | return getUninstantiatedDefaultArg()->getSourceRange(); |
| 1965 | |
| 1966 | return SourceRange(); |
Argyrios Kyrtzidis | fc7e2a8 | 2009-07-05 22:21:56 +0000 | [diff] [blame] | 1967 | } |
| 1968 | |
Douglas Gregor | 1fe85ea | 2011-01-05 21:11:38 +0000 | [diff] [blame] | 1969 | bool ParmVarDecl::isParameterPack() const { |
| 1970 | return isa<PackExpansionType>(getType()); |
| 1971 | } |
| 1972 | |
Ted Kremenek | d211cb7 | 2011-10-06 05:00:56 +0000 | [diff] [blame] | 1973 | void ParmVarDecl::setParameterIndexLarge(unsigned parameterIndex) { |
| 1974 | getASTContext().setParameterIndex(this, parameterIndex); |
| 1975 | ParmVarDeclBits.ParameterIndex = ParameterIndexSentinel; |
| 1976 | } |
| 1977 | |
| 1978 | unsigned ParmVarDecl::getParameterIndexLarge() const { |
| 1979 | return getASTContext().getParameterIndex(this); |
| 1980 | } |
| 1981 | |
Nuno Lopes | 99f06ba | 2008-12-17 23:39:55 +0000 | [diff] [blame] | 1982 | //===----------------------------------------------------------------------===// |
Chris Lattner | 8a93423 | 2008-03-31 00:36:02 +0000 | [diff] [blame] | 1983 | // FunctionDecl Implementation |
| 1984 | //===----------------------------------------------------------------------===// |
| 1985 | |
Benjamin Kramer | 5eada84 | 2013-02-22 15:46:01 +0000 | [diff] [blame] | 1986 | void FunctionDecl::getNameForDiagnostic( |
| 1987 | raw_ostream &OS, const PrintingPolicy &Policy, bool Qualified) const { |
| 1988 | NamedDecl::getNameForDiagnostic(OS, Policy, Qualified); |
Douglas Gregor | da2142f | 2011-02-19 18:51:44 +0000 | [diff] [blame] | 1989 | const TemplateArgumentList *TemplateArgs = getTemplateSpecializationArgs(); |
| 1990 | if (TemplateArgs) |
Benjamin Kramer | 5eada84 | 2013-02-22 15:46:01 +0000 | [diff] [blame] | 1991 | TemplateSpecializationType::PrintTemplateArgumentList( |
| 1992 | OS, TemplateArgs->data(), TemplateArgs->size(), Policy); |
Douglas Gregor | da2142f | 2011-02-19 18:51:44 +0000 | [diff] [blame] | 1993 | } |
| 1994 | |
Ted Kremenek | 9498d38 | 2010-04-29 16:49:01 +0000 | [diff] [blame] | 1995 | bool FunctionDecl::isVariadic() const { |
| 1996 | if (const FunctionProtoType *FT = getType()->getAs<FunctionProtoType>()) |
| 1997 | return FT->isVariadic(); |
| 1998 | return false; |
| 1999 | } |
| 2000 | |
Argyrios Kyrtzidis | 06a54a3 | 2010-07-07 11:31:19 +0000 | [diff] [blame] | 2001 | bool FunctionDecl::hasBody(const FunctionDecl *&Definition) const { |
| 2002 | for (redecl_iterator I = redecls_begin(), E = redecls_end(); I != E; ++I) { |
Francois Pichet | 8387e2a | 2011-04-22 22:18:13 +0000 | [diff] [blame] | 2003 | if (I->Body || I->IsLateTemplateParsed) { |
Argyrios Kyrtzidis | 06a54a3 | 2010-07-07 11:31:19 +0000 | [diff] [blame] | 2004 | Definition = *I; |
| 2005 | return true; |
| 2006 | } |
| 2007 | } |
| 2008 | |
| 2009 | return false; |
| 2010 | } |
| 2011 | |
Anders Carlsson | ffb945f | 2011-05-14 23:26:09 +0000 | [diff] [blame] | 2012 | bool FunctionDecl::hasTrivialBody() const |
| 2013 | { |
| 2014 | Stmt *S = getBody(); |
| 2015 | if (!S) { |
| 2016 | // Since we don't have a body for this function, we don't know if it's |
| 2017 | // trivial or not. |
| 2018 | return false; |
| 2019 | } |
| 2020 | |
| 2021 | if (isa<CompoundStmt>(S) && cast<CompoundStmt>(S)->body_empty()) |
| 2022 | return true; |
| 2023 | return false; |
| 2024 | } |
| 2025 | |
Sean Hunt | 10620eb | 2011-05-06 20:44:56 +0000 | [diff] [blame] | 2026 | bool FunctionDecl::isDefined(const FunctionDecl *&Definition) const { |
| 2027 | for (redecl_iterator I = redecls_begin(), E = redecls_end(); I != E; ++I) { |
Sean Hunt | cd10dec | 2011-05-23 23:14:04 +0000 | [diff] [blame] | 2028 | if (I->IsDeleted || I->IsDefaulted || I->Body || I->IsLateTemplateParsed) { |
Sean Hunt | 10620eb | 2011-05-06 20:44:56 +0000 | [diff] [blame] | 2029 | Definition = I->IsDeleted ? I->getCanonicalDecl() : *I; |
| 2030 | return true; |
| 2031 | } |
| 2032 | } |
| 2033 | |
| 2034 | return false; |
| 2035 | } |
| 2036 | |
Argyrios Kyrtzidis | 6fb0aee | 2009-06-30 02:35:26 +0000 | [diff] [blame] | 2037 | Stmt *FunctionDecl::getBody(const FunctionDecl *&Definition) const { |
Argyrios Kyrtzidis | c37929c | 2009-07-14 03:20:21 +0000 | [diff] [blame] | 2038 | for (redecl_iterator I = redecls_begin(), E = redecls_end(); I != E; ++I) { |
| 2039 | if (I->Body) { |
| 2040 | Definition = *I; |
| 2041 | return I->Body.get(getASTContext().getExternalSource()); |
Francois Pichet | 8387e2a | 2011-04-22 22:18:13 +0000 | [diff] [blame] | 2042 | } else if (I->IsLateTemplateParsed) { |
| 2043 | Definition = *I; |
| 2044 | return 0; |
Douglas Gregor | f009795 | 2008-04-21 02:02:58 +0000 | [diff] [blame] | 2045 | } |
| 2046 | } |
| 2047 | |
| 2048 | return 0; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2049 | } |
| 2050 | |
Argyrios Kyrtzidis | 55d608c | 2009-06-20 08:09:14 +0000 | [diff] [blame] | 2051 | void FunctionDecl::setBody(Stmt *B) { |
| 2052 | Body = B; |
Douglas Gregor | b5f35ba | 2010-12-06 17:49:01 +0000 | [diff] [blame] | 2053 | if (B) |
Argyrios Kyrtzidis | 55d608c | 2009-06-20 08:09:14 +0000 | [diff] [blame] | 2054 | EndRangeLoc = B->getLocEnd(); |
| 2055 | } |
| 2056 | |
Douglas Gregor | 2138664 | 2010-09-28 21:55:22 +0000 | [diff] [blame] | 2057 | void FunctionDecl::setPure(bool P) { |
| 2058 | IsPure = P; |
| 2059 | if (P) |
| 2060 | if (CXXRecordDecl *Parent = dyn_cast<CXXRecordDecl>(getDeclContext())) |
| 2061 | Parent->markedVirtualFunctionPure(); |
| 2062 | } |
| 2063 | |
Douglas Gregor | 48a83b5 | 2009-09-12 00:17:51 +0000 | [diff] [blame] | 2064 | bool FunctionDecl::isMain() const { |
John McCall | 23c608d | 2011-05-15 17:49:20 +0000 | [diff] [blame] | 2065 | const TranslationUnitDecl *tunit = |
| 2066 | dyn_cast<TranslationUnitDecl>(getDeclContext()->getRedeclContext()); |
| 2067 | return tunit && |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 2068 | !tunit->getASTContext().getLangOpts().Freestanding && |
John McCall | 23c608d | 2011-05-15 17:49:20 +0000 | [diff] [blame] | 2069 | getIdentifier() && |
| 2070 | getIdentifier()->isStr("main"); |
| 2071 | } |
| 2072 | |
| 2073 | bool FunctionDecl::isReservedGlobalPlacementOperator() const { |
| 2074 | assert(getDeclName().getNameKind() == DeclarationName::CXXOperatorName); |
| 2075 | assert(getDeclName().getCXXOverloadedOperator() == OO_New || |
| 2076 | getDeclName().getCXXOverloadedOperator() == OO_Delete || |
| 2077 | getDeclName().getCXXOverloadedOperator() == OO_Array_New || |
| 2078 | getDeclName().getCXXOverloadedOperator() == OO_Array_Delete); |
| 2079 | |
| 2080 | if (isa<CXXRecordDecl>(getDeclContext())) return false; |
| 2081 | assert(getDeclContext()->getRedeclContext()->isTranslationUnit()); |
| 2082 | |
| 2083 | const FunctionProtoType *proto = getType()->castAs<FunctionProtoType>(); |
| 2084 | if (proto->getNumArgs() != 2 || proto->isVariadic()) return false; |
| 2085 | |
| 2086 | ASTContext &Context = |
| 2087 | cast<TranslationUnitDecl>(getDeclContext()->getRedeclContext()) |
| 2088 | ->getASTContext(); |
| 2089 | |
| 2090 | // The result type and first argument type are constant across all |
| 2091 | // these operators. The second argument must be exactly void*. |
| 2092 | return (proto->getArgType(1).getCanonicalType() == Context.VoidPtrTy); |
Douglas Gregor | 04495c8 | 2009-02-24 01:23:02 +0000 | [diff] [blame] | 2093 | } |
| 2094 | |
Rafael Espindola | 950fee2 | 2013-02-14 01:18:37 +0000 | [diff] [blame] | 2095 | LanguageLinkage FunctionDecl::getLanguageLinkage() const { |
Rafael Espindola | 6dcea67 | 2013-01-12 15:27:44 +0000 | [diff] [blame] | 2096 | // Users expect to be able to write |
| 2097 | // extern "C" void *__builtin_alloca (size_t); |
| 2098 | // so consider builtins as having C language linkage. |
Rafael Espindola | 508276c | 2013-01-12 15:27:43 +0000 | [diff] [blame] | 2099 | if (getBuiltinID()) |
Rafael Espindola | 950fee2 | 2013-02-14 01:18:37 +0000 | [diff] [blame] | 2100 | return CLanguageLinkage; |
Rafael Espindola | 508276c | 2013-01-12 15:27:43 +0000 | [diff] [blame] | 2101 | |
Rafael Espindola | 950fee2 | 2013-02-14 01:18:37 +0000 | [diff] [blame] | 2102 | return getLanguageLinkageTemplate(*this); |
Rafael Espindola | 78eeba8 | 2012-12-28 14:21:58 +0000 | [diff] [blame] | 2103 | } |
| 2104 | |
Rafael Espindola | 2d1b096 | 2013-03-14 03:07:35 +0000 | [diff] [blame] | 2105 | bool FunctionDecl::isExternC() const { |
| 2106 | return isExternCTemplate(*this); |
| 2107 | } |
| 2108 | |
Rafael Espindola | d8ffd0b | 2013-05-05 20:15:21 +0000 | [diff] [blame] | 2109 | bool FunctionDecl::isInExternCContext() const { |
| 2110 | return isInLanguageSpecContext(this, LinkageSpecDecl::lang_c); |
| 2111 | } |
| 2112 | |
| 2113 | bool FunctionDecl::isInExternCXXContext() const { |
| 2114 | return isInLanguageSpecContext(this, LinkageSpecDecl::lang_cxx); |
| 2115 | } |
| 2116 | |
Douglas Gregor | 8499f3f | 2009-03-31 16:35:03 +0000 | [diff] [blame] | 2117 | bool FunctionDecl::isGlobal() const { |
| 2118 | if (const CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(this)) |
| 2119 | return Method->isStatic(); |
| 2120 | |
Rafael Espindola | d2615cc | 2013-04-03 19:27:57 +0000 | [diff] [blame] | 2121 | if (getCanonicalDecl()->getStorageClass() == SC_Static) |
Douglas Gregor | 8499f3f | 2009-03-31 16:35:03 +0000 | [diff] [blame] | 2122 | return false; |
| 2123 | |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2124 | for (const DeclContext *DC = getDeclContext(); |
Douglas Gregor | 8499f3f | 2009-03-31 16:35:03 +0000 | [diff] [blame] | 2125 | DC->isNamespace(); |
| 2126 | DC = DC->getParent()) { |
| 2127 | if (const NamespaceDecl *Namespace = cast<NamespaceDecl>(DC)) { |
| 2128 | if (!Namespace->getDeclName()) |
| 2129 | return false; |
| 2130 | break; |
| 2131 | } |
| 2132 | } |
| 2133 | |
| 2134 | return true; |
| 2135 | } |
| 2136 | |
Richard Smith | cd8ab51 | 2013-01-17 01:30:42 +0000 | [diff] [blame] | 2137 | bool FunctionDecl::isNoReturn() const { |
| 2138 | return hasAttr<NoReturnAttr>() || hasAttr<CXX11NoReturnAttr>() || |
Richard Smith | 7586a6e | 2013-01-30 05:45:05 +0000 | [diff] [blame] | 2139 | hasAttr<C11NoReturnAttr>() || |
Richard Smith | cd8ab51 | 2013-01-17 01:30:42 +0000 | [diff] [blame] | 2140 | getType()->getAs<FunctionType>()->getNoReturnAttr(); |
| 2141 | } |
| 2142 | |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 2143 | void |
| 2144 | FunctionDecl::setPreviousDeclaration(FunctionDecl *PrevDecl) { |
| 2145 | redeclarable_base::setPreviousDeclaration(PrevDecl); |
| 2146 | |
| 2147 | if (FunctionTemplateDecl *FunTmpl = getDescribedFunctionTemplate()) { |
| 2148 | FunctionTemplateDecl *PrevFunTmpl |
| 2149 | = PrevDecl? PrevDecl->getDescribedFunctionTemplate() : 0; |
| 2150 | assert((!PrevDecl || PrevFunTmpl) && "Function/function template mismatch"); |
| 2151 | FunTmpl->setPreviousDeclaration(PrevFunTmpl); |
| 2152 | } |
Douglas Gregor | 8f15094 | 2010-12-09 16:59:22 +0000 | [diff] [blame] | 2153 | |
Axel Naumann | d9d137e | 2011-11-08 18:21:06 +0000 | [diff] [blame] | 2154 | if (PrevDecl && PrevDecl->IsInline) |
Douglas Gregor | 8f15094 | 2010-12-09 16:59:22 +0000 | [diff] [blame] | 2155 | IsInline = true; |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 2156 | } |
| 2157 | |
| 2158 | const FunctionDecl *FunctionDecl::getCanonicalDecl() const { |
| 2159 | return getFirstDeclaration(); |
| 2160 | } |
| 2161 | |
| 2162 | FunctionDecl *FunctionDecl::getCanonicalDecl() { |
| 2163 | return getFirstDeclaration(); |
| 2164 | } |
| 2165 | |
Douglas Gregor | 3e41d60 | 2009-02-13 23:20:09 +0000 | [diff] [blame] | 2166 | /// \brief Returns a value indicating whether this function |
| 2167 | /// corresponds to a builtin function. |
| 2168 | /// |
| 2169 | /// The function corresponds to a built-in function if it is |
| 2170 | /// declared at translation scope or within an extern "C" block and |
| 2171 | /// its name matches with the name of a builtin. The returned value |
| 2172 | /// will be 0 for functions that do not correspond to a builtin, a |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2173 | /// value of type \c Builtin::ID if in the target-independent range |
Douglas Gregor | 3e41d60 | 2009-02-13 23:20:09 +0000 | [diff] [blame] | 2174 | /// \c [1,Builtin::First), or a target-specific builtin value. |
Douglas Gregor | 7814e6d | 2009-09-12 00:22:50 +0000 | [diff] [blame] | 2175 | unsigned FunctionDecl::getBuiltinID() const { |
Daniel Dunbar | 60d302a | 2012-03-06 23:52:37 +0000 | [diff] [blame] | 2176 | if (!getIdentifier()) |
Douglas Gregor | 3c385e5 | 2009-02-14 18:57:46 +0000 | [diff] [blame] | 2177 | return 0; |
| 2178 | |
| 2179 | unsigned BuiltinID = getIdentifier()->getBuiltinID(); |
Daniel Dunbar | 60d302a | 2012-03-06 23:52:37 +0000 | [diff] [blame] | 2180 | if (!BuiltinID) |
| 2181 | return 0; |
| 2182 | |
| 2183 | ASTContext &Context = getASTContext(); |
Douglas Gregor | 3c385e5 | 2009-02-14 18:57:46 +0000 | [diff] [blame] | 2184 | if (!Context.BuiltinInfo.isPredefinedLibFunction(BuiltinID)) |
| 2185 | return BuiltinID; |
| 2186 | |
| 2187 | // This function has the name of a known C library |
| 2188 | // function. Determine whether it actually refers to the C library |
| 2189 | // function or whether it just has the same name. |
| 2190 | |
Douglas Gregor | 9add317 | 2009-02-17 03:23:10 +0000 | [diff] [blame] | 2191 | // If this is a static function, it's not a builtin. |
John McCall | d931b08 | 2010-08-26 03:08:43 +0000 | [diff] [blame] | 2192 | if (getStorageClass() == SC_Static) |
Douglas Gregor | 9add317 | 2009-02-17 03:23:10 +0000 | [diff] [blame] | 2193 | return 0; |
| 2194 | |
Douglas Gregor | 3c385e5 | 2009-02-14 18:57:46 +0000 | [diff] [blame] | 2195 | // If this function is at translation-unit scope and we're not in |
| 2196 | // C++, it refers to the C library function. |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 2197 | if (!Context.getLangOpts().CPlusPlus && |
Douglas Gregor | 3c385e5 | 2009-02-14 18:57:46 +0000 | [diff] [blame] | 2198 | getDeclContext()->isTranslationUnit()) |
| 2199 | return BuiltinID; |
| 2200 | |
| 2201 | // If the function is in an extern "C" linkage specification and is |
| 2202 | // not marked "overloadable", it's the real function. |
| 2203 | if (isa<LinkageSpecDecl>(getDeclContext()) && |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2204 | cast<LinkageSpecDecl>(getDeclContext())->getLanguage() |
Douglas Gregor | 3c385e5 | 2009-02-14 18:57:46 +0000 | [diff] [blame] | 2205 | == LinkageSpecDecl::lang_c && |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 2206 | !getAttr<OverloadableAttr>()) |
Douglas Gregor | 3c385e5 | 2009-02-14 18:57:46 +0000 | [diff] [blame] | 2207 | return BuiltinID; |
| 2208 | |
| 2209 | // Not a builtin |
Douglas Gregor | 3e41d60 | 2009-02-13 23:20:09 +0000 | [diff] [blame] | 2210 | return 0; |
| 2211 | } |
| 2212 | |
| 2213 | |
Chris Lattner | 1ad9b28 | 2009-04-25 06:03:53 +0000 | [diff] [blame] | 2214 | /// getNumParams - Return the number of parameters this function must have |
Bob Wilson | 8dbfbf4 | 2011-01-10 18:23:55 +0000 | [diff] [blame] | 2215 | /// based on its FunctionType. This is the length of the ParamInfo array |
Chris Lattner | 1ad9b28 | 2009-04-25 06:03:53 +0000 | [diff] [blame] | 2216 | /// after it has been created. |
| 2217 | unsigned FunctionDecl::getNumParams() const { |
Eli Friedman | 482466b | 2012-08-30 22:22:09 +0000 | [diff] [blame] | 2218 | const FunctionType *FT = getType()->castAs<FunctionType>(); |
Douglas Gregor | 72564e7 | 2009-02-26 23:50:07 +0000 | [diff] [blame] | 2219 | if (isa<FunctionNoProtoType>(FT)) |
Chris Lattner | d3b9065 | 2008-03-15 05:43:15 +0000 | [diff] [blame] | 2220 | return 0; |
Douglas Gregor | 72564e7 | 2009-02-26 23:50:07 +0000 | [diff] [blame] | 2221 | return cast<FunctionProtoType>(FT)->getNumArgs(); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2222 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2223 | } |
| 2224 | |
Argyrios Kyrtzidis | 6b54151 | 2010-09-08 19:31:22 +0000 | [diff] [blame] | 2225 | void FunctionDecl::setParams(ASTContext &C, |
Dmitri Gribenko | cfa88f8 | 2013-01-12 19:30:44 +0000 | [diff] [blame] | 2226 | ArrayRef<ParmVarDecl *> NewParamInfo) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2227 | assert(ParamInfo == 0 && "Already has param info!"); |
David Blaikie | 4278c65 | 2011-09-21 18:16:56 +0000 | [diff] [blame] | 2228 | assert(NewParamInfo.size() == getNumParams() && "Parameter count mismatch!"); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2229 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2230 | // Zero params -> null pointer. |
David Blaikie | 4278c65 | 2011-09-21 18:16:56 +0000 | [diff] [blame] | 2231 | if (!NewParamInfo.empty()) { |
| 2232 | ParamInfo = new (C) ParmVarDecl*[NewParamInfo.size()]; |
| 2233 | std::copy(NewParamInfo.begin(), NewParamInfo.end(), ParamInfo); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2234 | } |
| 2235 | } |
| 2236 | |
Dmitri Gribenko | cfa88f8 | 2013-01-12 19:30:44 +0000 | [diff] [blame] | 2237 | void FunctionDecl::setDeclsInPrototypeScope(ArrayRef<NamedDecl *> NewDecls) { |
James Molloy | 16f1f71 | 2012-02-29 10:24:19 +0000 | [diff] [blame] | 2238 | assert(DeclsInPrototypeScope.empty() && "Already has prototype decls!"); |
| 2239 | |
| 2240 | if (!NewDecls.empty()) { |
| 2241 | NamedDecl **A = new (getASTContext()) NamedDecl*[NewDecls.size()]; |
| 2242 | std::copy(NewDecls.begin(), NewDecls.end(), A); |
Dmitri Gribenko | cfa88f8 | 2013-01-12 19:30:44 +0000 | [diff] [blame] | 2243 | DeclsInPrototypeScope = ArrayRef<NamedDecl *>(A, NewDecls.size()); |
James Molloy | 16f1f71 | 2012-02-29 10:24:19 +0000 | [diff] [blame] | 2244 | } |
| 2245 | } |
| 2246 | |
Chris Lattner | 8123a95 | 2008-04-10 02:22:51 +0000 | [diff] [blame] | 2247 | /// getMinRequiredArguments - Returns the minimum number of arguments |
| 2248 | /// needed to call this function. This may be fewer than the number of |
| 2249 | /// function parameters, if some of the parameters have default |
Douglas Gregor | f5c65ff | 2011-01-06 22:09:01 +0000 | [diff] [blame] | 2250 | /// arguments (in C++) or the last parameter is a parameter pack. |
Chris Lattner | 8123a95 | 2008-04-10 02:22:51 +0000 | [diff] [blame] | 2251 | unsigned FunctionDecl::getMinRequiredArguments() const { |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 2252 | if (!getASTContext().getLangOpts().CPlusPlus) |
Douglas Gregor | 7d5c0c1 | 2011-01-11 01:52:23 +0000 | [diff] [blame] | 2253 | return getNumParams(); |
| 2254 | |
Douglas Gregor | f5c65ff | 2011-01-06 22:09:01 +0000 | [diff] [blame] | 2255 | unsigned NumRequiredArgs = getNumParams(); |
| 2256 | |
| 2257 | // If the last parameter is a parameter pack, we don't need an argument for |
| 2258 | // it. |
| 2259 | if (NumRequiredArgs > 0 && |
| 2260 | getParamDecl(NumRequiredArgs - 1)->isParameterPack()) |
| 2261 | --NumRequiredArgs; |
| 2262 | |
| 2263 | // If this parameter has a default argument, we don't need an argument for |
| 2264 | // it. |
| 2265 | while (NumRequiredArgs > 0 && |
| 2266 | getParamDecl(NumRequiredArgs-1)->hasDefaultArg()) |
Chris Lattner | 8123a95 | 2008-04-10 02:22:51 +0000 | [diff] [blame] | 2267 | --NumRequiredArgs; |
| 2268 | |
Douglas Gregor | 7d5c0c1 | 2011-01-11 01:52:23 +0000 | [diff] [blame] | 2269 | // We might have parameter packs before the end. These can't be deduced, |
| 2270 | // but they can still handle multiple arguments. |
| 2271 | unsigned ArgIdx = NumRequiredArgs; |
| 2272 | while (ArgIdx > 0) { |
| 2273 | if (getParamDecl(ArgIdx - 1)->isParameterPack()) |
| 2274 | NumRequiredArgs = ArgIdx; |
| 2275 | |
| 2276 | --ArgIdx; |
| 2277 | } |
| 2278 | |
Chris Lattner | 8123a95 | 2008-04-10 02:22:51 +0000 | [diff] [blame] | 2279 | return NumRequiredArgs; |
| 2280 | } |
| 2281 | |
Eli Friedman | a3b9fa2 | 2012-02-07 03:50:18 +0000 | [diff] [blame] | 2282 | static bool RedeclForcesDefC99(const FunctionDecl *Redecl) { |
| 2283 | // Only consider file-scope declarations in this test. |
| 2284 | if (!Redecl->getLexicalDeclContext()->isTranslationUnit()) |
| 2285 | return false; |
| 2286 | |
| 2287 | // Only consider explicit declarations; the presence of a builtin for a |
| 2288 | // libcall shouldn't affect whether a definition is externally visible. |
| 2289 | if (Redecl->isImplicit()) |
| 2290 | return false; |
| 2291 | |
| 2292 | if (!Redecl->isInlineSpecified() || Redecl->getStorageClass() == SC_Extern) |
| 2293 | return true; // Not an inline definition |
| 2294 | |
| 2295 | return false; |
| 2296 | } |
| 2297 | |
Nick Lewycky | dce67a7 | 2011-07-18 05:26:13 +0000 | [diff] [blame] | 2298 | /// \brief For a function declaration in C or C++, determine whether this |
| 2299 | /// declaration causes the definition to be externally visible. |
| 2300 | /// |
Eli Friedman | a3b9fa2 | 2012-02-07 03:50:18 +0000 | [diff] [blame] | 2301 | /// Specifically, this determines if adding the current declaration to the set |
| 2302 | /// of redeclarations of the given functions causes |
| 2303 | /// isInlineDefinitionExternallyVisible to change from false to true. |
Nick Lewycky | dce67a7 | 2011-07-18 05:26:13 +0000 | [diff] [blame] | 2304 | bool FunctionDecl::doesDeclarationForceExternallyVisibleDefinition() const { |
| 2305 | assert(!doesThisDeclarationHaveABody() && |
| 2306 | "Must have a declaration without a body."); |
| 2307 | |
| 2308 | ASTContext &Context = getASTContext(); |
| 2309 | |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 2310 | if (Context.getLangOpts().GNUInline || hasAttr<GNUInlineAttr>()) { |
Eli Friedman | a3b9fa2 | 2012-02-07 03:50:18 +0000 | [diff] [blame] | 2311 | // With GNU inlining, a declaration with 'inline' but not 'extern', forces |
| 2312 | // an externally visible definition. |
| 2313 | // |
| 2314 | // FIXME: What happens if gnu_inline gets added on after the first |
| 2315 | // declaration? |
Rafael Espindola | d2615cc | 2013-04-03 19:27:57 +0000 | [diff] [blame] | 2316 | if (!isInlineSpecified() || getStorageClass() == SC_Extern) |
Eli Friedman | a3b9fa2 | 2012-02-07 03:50:18 +0000 | [diff] [blame] | 2317 | return false; |
| 2318 | |
| 2319 | const FunctionDecl *Prev = this; |
| 2320 | bool FoundBody = false; |
| 2321 | while ((Prev = Prev->getPreviousDecl())) { |
David Blaikie | 7247c88 | 2013-05-15 07:37:26 +0000 | [diff] [blame^] | 2322 | FoundBody |= Prev->Body.isValid(); |
Eli Friedman | a3b9fa2 | 2012-02-07 03:50:18 +0000 | [diff] [blame] | 2323 | |
| 2324 | if (Prev->Body) { |
| 2325 | // If it's not the case that both 'inline' and 'extern' are |
| 2326 | // specified on the definition, then it is always externally visible. |
| 2327 | if (!Prev->isInlineSpecified() || |
Rafael Espindola | d2615cc | 2013-04-03 19:27:57 +0000 | [diff] [blame] | 2328 | Prev->getStorageClass() != SC_Extern) |
Eli Friedman | a3b9fa2 | 2012-02-07 03:50:18 +0000 | [diff] [blame] | 2329 | return false; |
| 2330 | } else if (Prev->isInlineSpecified() && |
Rafael Espindola | d2615cc | 2013-04-03 19:27:57 +0000 | [diff] [blame] | 2331 | Prev->getStorageClass() != SC_Extern) { |
Eli Friedman | a3b9fa2 | 2012-02-07 03:50:18 +0000 | [diff] [blame] | 2332 | return false; |
| 2333 | } |
| 2334 | } |
| 2335 | return FoundBody; |
| 2336 | } |
| 2337 | |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 2338 | if (Context.getLangOpts().CPlusPlus) |
Nick Lewycky | dce67a7 | 2011-07-18 05:26:13 +0000 | [diff] [blame] | 2339 | return false; |
Eli Friedman | a3b9fa2 | 2012-02-07 03:50:18 +0000 | [diff] [blame] | 2340 | |
| 2341 | // C99 6.7.4p6: |
| 2342 | // [...] If all of the file scope declarations for a function in a |
| 2343 | // translation unit include the inline function specifier without extern, |
| 2344 | // then the definition in that translation unit is an inline definition. |
| 2345 | if (isInlineSpecified() && getStorageClass() != SC_Extern) |
Nick Lewycky | dce67a7 | 2011-07-18 05:26:13 +0000 | [diff] [blame] | 2346 | return false; |
Eli Friedman | a3b9fa2 | 2012-02-07 03:50:18 +0000 | [diff] [blame] | 2347 | const FunctionDecl *Prev = this; |
| 2348 | bool FoundBody = false; |
| 2349 | while ((Prev = Prev->getPreviousDecl())) { |
David Blaikie | 7247c88 | 2013-05-15 07:37:26 +0000 | [diff] [blame^] | 2350 | FoundBody |= Prev->Body.isValid(); |
Eli Friedman | a3b9fa2 | 2012-02-07 03:50:18 +0000 | [diff] [blame] | 2351 | if (RedeclForcesDefC99(Prev)) |
| 2352 | return false; |
| 2353 | } |
| 2354 | return FoundBody; |
Nick Lewycky | dce67a7 | 2011-07-18 05:26:13 +0000 | [diff] [blame] | 2355 | } |
| 2356 | |
Richard Smith | d4497dd | 2013-01-25 00:08:28 +0000 | [diff] [blame] | 2357 | /// \brief For an inline function definition in C, or for a gnu_inline function |
| 2358 | /// in C++, determine whether the definition will be externally visible. |
Douglas Gregor | 1fc09a9 | 2009-09-13 07:46:26 +0000 | [diff] [blame] | 2359 | /// |
| 2360 | /// Inline function definitions are always available for inlining optimizations. |
| 2361 | /// However, depending on the language dialect, declaration specifiers, and |
| 2362 | /// attributes, the definition of an inline function may or may not be |
| 2363 | /// "externally" visible to other translation units in the program. |
| 2364 | /// |
| 2365 | /// In C99, inline definitions are not externally visible by default. However, |
Mike Stump | 1e5fd7f | 2010-01-06 02:05:39 +0000 | [diff] [blame] | 2366 | /// if even one of the global-scope declarations is marked "extern inline", the |
Douglas Gregor | 1fc09a9 | 2009-09-13 07:46:26 +0000 | [diff] [blame] | 2367 | /// inline definition becomes externally visible (C99 6.7.4p6). |
| 2368 | /// |
| 2369 | /// In GNU89 mode, or if the gnu_inline attribute is attached to the function |
| 2370 | /// definition, we use the GNU semantics for inline, which are nearly the |
| 2371 | /// opposite of C99 semantics. In particular, "inline" by itself will create |
| 2372 | /// an externally visible symbol, but "extern inline" will not create an |
| 2373 | /// externally visible symbol. |
| 2374 | bool FunctionDecl::isInlineDefinitionExternallyVisible() const { |
Sean Hunt | 10620eb | 2011-05-06 20:44:56 +0000 | [diff] [blame] | 2375 | assert(doesThisDeclarationHaveABody() && "Must have the function definition"); |
Douglas Gregor | 7ced9c8 | 2009-10-27 21:11:48 +0000 | [diff] [blame] | 2376 | assert(isInlined() && "Function must be inline"); |
Douglas Gregor | 7d9c3c9 | 2009-10-27 23:26:40 +0000 | [diff] [blame] | 2377 | ASTContext &Context = getASTContext(); |
Douglas Gregor | 1fc09a9 | 2009-09-13 07:46:26 +0000 | [diff] [blame] | 2378 | |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 2379 | if (Context.getLangOpts().GNUInline || hasAttr<GNUInlineAttr>()) { |
Eli Friedman | a3b9fa2 | 2012-02-07 03:50:18 +0000 | [diff] [blame] | 2380 | // Note: If you change the logic here, please change |
| 2381 | // doesDeclarationForceExternallyVisibleDefinition as well. |
| 2382 | // |
Douglas Gregor | 8f15094 | 2010-12-09 16:59:22 +0000 | [diff] [blame] | 2383 | // If it's not the case that both 'inline' and 'extern' are |
| 2384 | // specified on the definition, then this inline definition is |
| 2385 | // externally visible. |
Rafael Espindola | d2615cc | 2013-04-03 19:27:57 +0000 | [diff] [blame] | 2386 | if (!(isInlineSpecified() && getStorageClass() == SC_Extern)) |
Douglas Gregor | 8f15094 | 2010-12-09 16:59:22 +0000 | [diff] [blame] | 2387 | return true; |
| 2388 | |
| 2389 | // If any declaration is 'inline' but not 'extern', then this definition |
| 2390 | // is externally visible. |
Douglas Gregor | 1fc09a9 | 2009-09-13 07:46:26 +0000 | [diff] [blame] | 2391 | for (redecl_iterator Redecl = redecls_begin(), RedeclEnd = redecls_end(); |
| 2392 | Redecl != RedeclEnd; |
| 2393 | ++Redecl) { |
Douglas Gregor | 8f15094 | 2010-12-09 16:59:22 +0000 | [diff] [blame] | 2394 | if (Redecl->isInlineSpecified() && |
Rafael Espindola | d2615cc | 2013-04-03 19:27:57 +0000 | [diff] [blame] | 2395 | Redecl->getStorageClass() != SC_Extern) |
Douglas Gregor | 1fc09a9 | 2009-09-13 07:46:26 +0000 | [diff] [blame] | 2396 | return true; |
Douglas Gregor | 8f15094 | 2010-12-09 16:59:22 +0000 | [diff] [blame] | 2397 | } |
Douglas Gregor | 1fc09a9 | 2009-09-13 07:46:26 +0000 | [diff] [blame] | 2398 | |
Douglas Gregor | 9f9bf25 | 2009-04-28 06:37:30 +0000 | [diff] [blame] | 2399 | return false; |
Douglas Gregor | 1fc09a9 | 2009-09-13 07:46:26 +0000 | [diff] [blame] | 2400 | } |
Eli Friedman | a3b9fa2 | 2012-02-07 03:50:18 +0000 | [diff] [blame] | 2401 | |
Richard Smith | d4497dd | 2013-01-25 00:08:28 +0000 | [diff] [blame] | 2402 | // The rest of this function is C-only. |
| 2403 | assert(!Context.getLangOpts().CPlusPlus && |
| 2404 | "should not use C inline rules in C++"); |
| 2405 | |
Douglas Gregor | 1fc09a9 | 2009-09-13 07:46:26 +0000 | [diff] [blame] | 2406 | // C99 6.7.4p6: |
| 2407 | // [...] If all of the file scope declarations for a function in a |
| 2408 | // translation unit include the inline function specifier without extern, |
| 2409 | // then the definition in that translation unit is an inline definition. |
| 2410 | for (redecl_iterator Redecl = redecls_begin(), RedeclEnd = redecls_end(); |
| 2411 | Redecl != RedeclEnd; |
| 2412 | ++Redecl) { |
Eli Friedman | a3b9fa2 | 2012-02-07 03:50:18 +0000 | [diff] [blame] | 2413 | if (RedeclForcesDefC99(*Redecl)) |
| 2414 | return true; |
Douglas Gregor | 1fc09a9 | 2009-09-13 07:46:26 +0000 | [diff] [blame] | 2415 | } |
| 2416 | |
| 2417 | // C99 6.7.4p6: |
| 2418 | // An inline definition does not provide an external definition for the |
| 2419 | // function, and does not forbid an external definition in another |
| 2420 | // translation unit. |
Douglas Gregor | 9f9bf25 | 2009-04-28 06:37:30 +0000 | [diff] [blame] | 2421 | return false; |
| 2422 | } |
| 2423 | |
Douglas Gregor | 1cd1b1e | 2008-11-06 22:13:31 +0000 | [diff] [blame] | 2424 | /// getOverloadedOperator - Which C++ overloaded operator this |
| 2425 | /// function represents, if any. |
| 2426 | OverloadedOperatorKind FunctionDecl::getOverloadedOperator() const { |
Douglas Gregor | e94ca9e4 | 2008-11-18 14:39:36 +0000 | [diff] [blame] | 2427 | if (getDeclName().getNameKind() == DeclarationName::CXXOperatorName) |
| 2428 | return getDeclName().getCXXOverloadedOperator(); |
Douglas Gregor | 1cd1b1e | 2008-11-06 22:13:31 +0000 | [diff] [blame] | 2429 | else |
| 2430 | return OO_None; |
| 2431 | } |
| 2432 | |
Sean Hunt | a6c058d | 2010-01-13 09:01:02 +0000 | [diff] [blame] | 2433 | /// getLiteralIdentifier - The literal suffix identifier this function |
| 2434 | /// represents, if any. |
| 2435 | const IdentifierInfo *FunctionDecl::getLiteralIdentifier() const { |
| 2436 | if (getDeclName().getNameKind() == DeclarationName::CXXLiteralOperatorName) |
| 2437 | return getDeclName().getCXXLiteralIdentifier(); |
| 2438 | else |
| 2439 | return 0; |
| 2440 | } |
| 2441 | |
Argyrios Kyrtzidis | d091355 | 2010-06-22 09:54:51 +0000 | [diff] [blame] | 2442 | FunctionDecl::TemplatedKind FunctionDecl::getTemplatedKind() const { |
| 2443 | if (TemplateOrSpecialization.isNull()) |
| 2444 | return TK_NonTemplate; |
| 2445 | if (TemplateOrSpecialization.is<FunctionTemplateDecl *>()) |
| 2446 | return TK_FunctionTemplate; |
| 2447 | if (TemplateOrSpecialization.is<MemberSpecializationInfo *>()) |
| 2448 | return TK_MemberSpecialization; |
| 2449 | if (TemplateOrSpecialization.is<FunctionTemplateSpecializationInfo *>()) |
| 2450 | return TK_FunctionTemplateSpecialization; |
| 2451 | if (TemplateOrSpecialization.is |
| 2452 | <DependentFunctionTemplateSpecializationInfo*>()) |
| 2453 | return TK_DependentFunctionTemplateSpecialization; |
| 2454 | |
David Blaikie | b219cfc | 2011-09-23 05:06:16 +0000 | [diff] [blame] | 2455 | llvm_unreachable("Did we miss a TemplateOrSpecialization type?"); |
Argyrios Kyrtzidis | d091355 | 2010-06-22 09:54:51 +0000 | [diff] [blame] | 2456 | } |
| 2457 | |
Douglas Gregor | 2db3232 | 2009-10-07 23:56:10 +0000 | [diff] [blame] | 2458 | FunctionDecl *FunctionDecl::getInstantiatedFromMemberFunction() const { |
Douglas Gregor | b3ae4fc | 2009-10-12 20:18:28 +0000 | [diff] [blame] | 2459 | if (MemberSpecializationInfo *Info = getMemberSpecializationInfo()) |
Douglas Gregor | 2db3232 | 2009-10-07 23:56:10 +0000 | [diff] [blame] | 2460 | return cast<FunctionDecl>(Info->getInstantiatedFrom()); |
| 2461 | |
| 2462 | return 0; |
| 2463 | } |
| 2464 | |
| 2465 | void |
Argyrios Kyrtzidis | 6b54151 | 2010-09-08 19:31:22 +0000 | [diff] [blame] | 2466 | FunctionDecl::setInstantiationOfMemberFunction(ASTContext &C, |
| 2467 | FunctionDecl *FD, |
Douglas Gregor | 2db3232 | 2009-10-07 23:56:10 +0000 | [diff] [blame] | 2468 | TemplateSpecializationKind TSK) { |
| 2469 | assert(TemplateOrSpecialization.isNull() && |
| 2470 | "Member function is already a specialization"); |
| 2471 | MemberSpecializationInfo *Info |
Argyrios Kyrtzidis | 6b54151 | 2010-09-08 19:31:22 +0000 | [diff] [blame] | 2472 | = new (C) MemberSpecializationInfo(FD, TSK); |
Douglas Gregor | 2db3232 | 2009-10-07 23:56:10 +0000 | [diff] [blame] | 2473 | TemplateOrSpecialization = Info; |
| 2474 | } |
| 2475 | |
Douglas Gregor | 3b846b6 | 2009-10-27 20:53:28 +0000 | [diff] [blame] | 2476 | bool FunctionDecl::isImplicitlyInstantiable() const { |
Douglas Gregor | 6cfacfe | 2010-05-17 17:34:56 +0000 | [diff] [blame] | 2477 | // If the function is invalid, it can't be implicitly instantiated. |
| 2478 | if (isInvalidDecl()) |
Douglas Gregor | 3b846b6 | 2009-10-27 20:53:28 +0000 | [diff] [blame] | 2479 | return false; |
| 2480 | |
| 2481 | switch (getTemplateSpecializationKind()) { |
| 2482 | case TSK_Undeclared: |
Douglas Gregor | 3b846b6 | 2009-10-27 20:53:28 +0000 | [diff] [blame] | 2483 | case TSK_ExplicitInstantiationDefinition: |
| 2484 | return false; |
| 2485 | |
| 2486 | case TSK_ImplicitInstantiation: |
| 2487 | return true; |
| 2488 | |
Francois Pichet | af0f4d0 | 2011-08-14 03:52:19 +0000 | [diff] [blame] | 2489 | // It is possible to instantiate TSK_ExplicitSpecialization kind |
| 2490 | // if the FunctionDecl has a class scope specialization pattern. |
| 2491 | case TSK_ExplicitSpecialization: |
| 2492 | return getClassScopeSpecializationPattern() != 0; |
| 2493 | |
Douglas Gregor | 3b846b6 | 2009-10-27 20:53:28 +0000 | [diff] [blame] | 2494 | case TSK_ExplicitInstantiationDeclaration: |
| 2495 | // Handled below. |
| 2496 | break; |
| 2497 | } |
| 2498 | |
| 2499 | // Find the actual template from which we will instantiate. |
| 2500 | const FunctionDecl *PatternDecl = getTemplateInstantiationPattern(); |
Argyrios Kyrtzidis | 06a54a3 | 2010-07-07 11:31:19 +0000 | [diff] [blame] | 2501 | bool HasPattern = false; |
Douglas Gregor | 3b846b6 | 2009-10-27 20:53:28 +0000 | [diff] [blame] | 2502 | if (PatternDecl) |
Argyrios Kyrtzidis | 06a54a3 | 2010-07-07 11:31:19 +0000 | [diff] [blame] | 2503 | HasPattern = PatternDecl->hasBody(PatternDecl); |
Douglas Gregor | 3b846b6 | 2009-10-27 20:53:28 +0000 | [diff] [blame] | 2504 | |
| 2505 | // C++0x [temp.explicit]p9: |
| 2506 | // Except for inline functions, other explicit instantiation declarations |
| 2507 | // have the effect of suppressing the implicit instantiation of the entity |
| 2508 | // to which they refer. |
Argyrios Kyrtzidis | 06a54a3 | 2010-07-07 11:31:19 +0000 | [diff] [blame] | 2509 | if (!HasPattern || !PatternDecl) |
Douglas Gregor | 3b846b6 | 2009-10-27 20:53:28 +0000 | [diff] [blame] | 2510 | return true; |
| 2511 | |
Douglas Gregor | 7ced9c8 | 2009-10-27 21:11:48 +0000 | [diff] [blame] | 2512 | return PatternDecl->isInlined(); |
Ted Kremenek | 75df4ee | 2011-12-01 00:59:17 +0000 | [diff] [blame] | 2513 | } |
| 2514 | |
| 2515 | bool FunctionDecl::isTemplateInstantiation() const { |
| 2516 | switch (getTemplateSpecializationKind()) { |
| 2517 | case TSK_Undeclared: |
| 2518 | case TSK_ExplicitSpecialization: |
| 2519 | return false; |
| 2520 | case TSK_ImplicitInstantiation: |
| 2521 | case TSK_ExplicitInstantiationDeclaration: |
| 2522 | case TSK_ExplicitInstantiationDefinition: |
| 2523 | return true; |
| 2524 | } |
| 2525 | llvm_unreachable("All TSK values handled."); |
| 2526 | } |
Douglas Gregor | 3b846b6 | 2009-10-27 20:53:28 +0000 | [diff] [blame] | 2527 | |
| 2528 | FunctionDecl *FunctionDecl::getTemplateInstantiationPattern() const { |
Francois Pichet | af0f4d0 | 2011-08-14 03:52:19 +0000 | [diff] [blame] | 2529 | // Handle class scope explicit specialization special case. |
| 2530 | if (getTemplateSpecializationKind() == TSK_ExplicitSpecialization) |
| 2531 | return getClassScopeSpecializationPattern(); |
| 2532 | |
Douglas Gregor | 3b846b6 | 2009-10-27 20:53:28 +0000 | [diff] [blame] | 2533 | if (FunctionTemplateDecl *Primary = getPrimaryTemplate()) { |
| 2534 | while (Primary->getInstantiatedFromMemberTemplate()) { |
| 2535 | // If we have hit a point where the user provided a specialization of |
| 2536 | // this template, we're done looking. |
| 2537 | if (Primary->isMemberSpecialization()) |
| 2538 | break; |
| 2539 | |
| 2540 | Primary = Primary->getInstantiatedFromMemberTemplate(); |
| 2541 | } |
| 2542 | |
| 2543 | return Primary->getTemplatedDecl(); |
| 2544 | } |
| 2545 | |
| 2546 | return getInstantiatedFromMemberFunction(); |
| 2547 | } |
| 2548 | |
Douglas Gregor | 16e8be2 | 2009-06-29 17:30:29 +0000 | [diff] [blame] | 2549 | FunctionTemplateDecl *FunctionDecl::getPrimaryTemplate() const { |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2550 | if (FunctionTemplateSpecializationInfo *Info |
Douglas Gregor | 16e8be2 | 2009-06-29 17:30:29 +0000 | [diff] [blame] | 2551 | = TemplateOrSpecialization |
| 2552 | .dyn_cast<FunctionTemplateSpecializationInfo*>()) { |
Douglas Gregor | 1fd2dd1 | 2009-06-29 22:39:32 +0000 | [diff] [blame] | 2553 | return Info->Template.getPointer(); |
Douglas Gregor | 16e8be2 | 2009-06-29 17:30:29 +0000 | [diff] [blame] | 2554 | } |
| 2555 | return 0; |
| 2556 | } |
| 2557 | |
Francois Pichet | af0f4d0 | 2011-08-14 03:52:19 +0000 | [diff] [blame] | 2558 | FunctionDecl *FunctionDecl::getClassScopeSpecializationPattern() const { |
| 2559 | return getASTContext().getClassScopeSpecializationPattern(this); |
| 2560 | } |
| 2561 | |
Douglas Gregor | 16e8be2 | 2009-06-29 17:30:29 +0000 | [diff] [blame] | 2562 | const TemplateArgumentList * |
| 2563 | FunctionDecl::getTemplateSpecializationArgs() const { |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2564 | if (FunctionTemplateSpecializationInfo *Info |
Douglas Gregor | fd056bc | 2009-10-13 16:30:37 +0000 | [diff] [blame] | 2565 | = TemplateOrSpecialization |
| 2566 | .dyn_cast<FunctionTemplateSpecializationInfo*>()) { |
Douglas Gregor | 16e8be2 | 2009-06-29 17:30:29 +0000 | [diff] [blame] | 2567 | return Info->TemplateArguments; |
| 2568 | } |
| 2569 | return 0; |
| 2570 | } |
| 2571 | |
Argyrios Kyrtzidis | 71a7605 | 2011-09-22 20:07:09 +0000 | [diff] [blame] | 2572 | const ASTTemplateArgumentListInfo * |
Abramo Bagnara | e03db98 | 2010-05-20 15:32:11 +0000 | [diff] [blame] | 2573 | FunctionDecl::getTemplateSpecializationArgsAsWritten() const { |
| 2574 | if (FunctionTemplateSpecializationInfo *Info |
| 2575 | = TemplateOrSpecialization |
| 2576 | .dyn_cast<FunctionTemplateSpecializationInfo*>()) { |
| 2577 | return Info->TemplateArgumentsAsWritten; |
| 2578 | } |
| 2579 | return 0; |
| 2580 | } |
| 2581 | |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2582 | void |
Argyrios Kyrtzidis | 6b54151 | 2010-09-08 19:31:22 +0000 | [diff] [blame] | 2583 | FunctionDecl::setFunctionTemplateSpecialization(ASTContext &C, |
| 2584 | FunctionTemplateDecl *Template, |
Douglas Gregor | 127102b | 2009-06-29 20:59:39 +0000 | [diff] [blame] | 2585 | const TemplateArgumentList *TemplateArgs, |
Douglas Gregor | b9aa6b2 | 2009-09-24 23:14:47 +0000 | [diff] [blame] | 2586 | void *InsertPos, |
Abramo Bagnara | e03db98 | 2010-05-20 15:32:11 +0000 | [diff] [blame] | 2587 | TemplateSpecializationKind TSK, |
Argyrios Kyrtzidis | 7b081c8 | 2010-07-05 10:37:55 +0000 | [diff] [blame] | 2588 | const TemplateArgumentListInfo *TemplateArgsAsWritten, |
| 2589 | SourceLocation PointOfInstantiation) { |
Douglas Gregor | b9aa6b2 | 2009-09-24 23:14:47 +0000 | [diff] [blame] | 2590 | assert(TSK != TSK_Undeclared && |
| 2591 | "Must specify the type of function template specialization"); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2592 | FunctionTemplateSpecializationInfo *Info |
Douglas Gregor | 16e8be2 | 2009-06-29 17:30:29 +0000 | [diff] [blame] | 2593 | = TemplateOrSpecialization.dyn_cast<FunctionTemplateSpecializationInfo*>(); |
Douglas Gregor | 1637be7 | 2009-06-26 00:10:03 +0000 | [diff] [blame] | 2594 | if (!Info) |
Argyrios Kyrtzidis | a626a3d | 2010-09-09 11:28:23 +0000 | [diff] [blame] | 2595 | Info = FunctionTemplateSpecializationInfo::Create(C, this, Template, TSK, |
| 2596 | TemplateArgs, |
| 2597 | TemplateArgsAsWritten, |
| 2598 | PointOfInstantiation); |
Douglas Gregor | 1637be7 | 2009-06-26 00:10:03 +0000 | [diff] [blame] | 2599 | TemplateOrSpecialization = Info; |
Douglas Gregor | 1e1e972 | 2012-03-28 14:34:23 +0000 | [diff] [blame] | 2600 | Template->addSpecialization(Info, InsertPos); |
Douglas Gregor | 1637be7 | 2009-06-26 00:10:03 +0000 | [diff] [blame] | 2601 | } |
| 2602 | |
John McCall | af2094e | 2010-04-08 09:05:18 +0000 | [diff] [blame] | 2603 | void |
| 2604 | FunctionDecl::setDependentTemplateSpecialization(ASTContext &Context, |
| 2605 | const UnresolvedSetImpl &Templates, |
| 2606 | const TemplateArgumentListInfo &TemplateArgs) { |
| 2607 | assert(TemplateOrSpecialization.isNull()); |
| 2608 | size_t Size = sizeof(DependentFunctionTemplateSpecializationInfo); |
| 2609 | Size += Templates.size() * sizeof(FunctionTemplateDecl*); |
John McCall | 21c0160 | 2010-04-13 22:18:28 +0000 | [diff] [blame] | 2610 | Size += TemplateArgs.size() * sizeof(TemplateArgumentLoc); |
John McCall | af2094e | 2010-04-08 09:05:18 +0000 | [diff] [blame] | 2611 | void *Buffer = Context.Allocate(Size); |
| 2612 | DependentFunctionTemplateSpecializationInfo *Info = |
| 2613 | new (Buffer) DependentFunctionTemplateSpecializationInfo(Templates, |
| 2614 | TemplateArgs); |
| 2615 | TemplateOrSpecialization = Info; |
| 2616 | } |
| 2617 | |
| 2618 | DependentFunctionTemplateSpecializationInfo:: |
| 2619 | DependentFunctionTemplateSpecializationInfo(const UnresolvedSetImpl &Ts, |
| 2620 | const TemplateArgumentListInfo &TArgs) |
| 2621 | : AngleLocs(TArgs.getLAngleLoc(), TArgs.getRAngleLoc()) { |
| 2622 | |
| 2623 | d.NumTemplates = Ts.size(); |
| 2624 | d.NumArgs = TArgs.size(); |
| 2625 | |
| 2626 | FunctionTemplateDecl **TsArray = |
| 2627 | const_cast<FunctionTemplateDecl**>(getTemplates()); |
| 2628 | for (unsigned I = 0, E = Ts.size(); I != E; ++I) |
| 2629 | TsArray[I] = cast<FunctionTemplateDecl>(Ts[I]->getUnderlyingDecl()); |
| 2630 | |
| 2631 | TemplateArgumentLoc *ArgsArray = |
| 2632 | const_cast<TemplateArgumentLoc*>(getTemplateArgs()); |
| 2633 | for (unsigned I = 0, E = TArgs.size(); I != E; ++I) |
| 2634 | new (&ArgsArray[I]) TemplateArgumentLoc(TArgs[I]); |
| 2635 | } |
| 2636 | |
Douglas Gregor | d0e3daf | 2009-09-04 22:48:11 +0000 | [diff] [blame] | 2637 | TemplateSpecializationKind FunctionDecl::getTemplateSpecializationKind() const { |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2638 | // For a function template specialization, query the specialization |
Douglas Gregor | d0e3daf | 2009-09-04 22:48:11 +0000 | [diff] [blame] | 2639 | // information object. |
Douglas Gregor | 2db3232 | 2009-10-07 23:56:10 +0000 | [diff] [blame] | 2640 | FunctionTemplateSpecializationInfo *FTSInfo |
Douglas Gregor | 1fd2dd1 | 2009-06-29 22:39:32 +0000 | [diff] [blame] | 2641 | = TemplateOrSpecialization.dyn_cast<FunctionTemplateSpecializationInfo*>(); |
Douglas Gregor | 2db3232 | 2009-10-07 23:56:10 +0000 | [diff] [blame] | 2642 | if (FTSInfo) |
| 2643 | return FTSInfo->getTemplateSpecializationKind(); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2644 | |
Douglas Gregor | 2db3232 | 2009-10-07 23:56:10 +0000 | [diff] [blame] | 2645 | MemberSpecializationInfo *MSInfo |
| 2646 | = TemplateOrSpecialization.dyn_cast<MemberSpecializationInfo*>(); |
| 2647 | if (MSInfo) |
| 2648 | return MSInfo->getTemplateSpecializationKind(); |
| 2649 | |
| 2650 | return TSK_Undeclared; |
Douglas Gregor | d0e3daf | 2009-09-04 22:48:11 +0000 | [diff] [blame] | 2651 | } |
| 2652 | |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2653 | void |
Douglas Gregor | 0a897e3 | 2009-10-15 17:21:20 +0000 | [diff] [blame] | 2654 | FunctionDecl::setTemplateSpecializationKind(TemplateSpecializationKind TSK, |
| 2655 | SourceLocation PointOfInstantiation) { |
| 2656 | if (FunctionTemplateSpecializationInfo *FTSInfo |
| 2657 | = TemplateOrSpecialization.dyn_cast< |
| 2658 | FunctionTemplateSpecializationInfo*>()) { |
| 2659 | FTSInfo->setTemplateSpecializationKind(TSK); |
| 2660 | if (TSK != TSK_ExplicitSpecialization && |
| 2661 | PointOfInstantiation.isValid() && |
| 2662 | FTSInfo->getPointOfInstantiation().isInvalid()) |
| 2663 | FTSInfo->setPointOfInstantiation(PointOfInstantiation); |
| 2664 | } else if (MemberSpecializationInfo *MSInfo |
| 2665 | = TemplateOrSpecialization.dyn_cast<MemberSpecializationInfo*>()) { |
| 2666 | MSInfo->setTemplateSpecializationKind(TSK); |
| 2667 | if (TSK != TSK_ExplicitSpecialization && |
| 2668 | PointOfInstantiation.isValid() && |
| 2669 | MSInfo->getPointOfInstantiation().isInvalid()) |
| 2670 | MSInfo->setPointOfInstantiation(PointOfInstantiation); |
| 2671 | } else |
David Blaikie | b219cfc | 2011-09-23 05:06:16 +0000 | [diff] [blame] | 2672 | llvm_unreachable("Function cannot have a template specialization kind"); |
Douglas Gregor | 0a897e3 | 2009-10-15 17:21:20 +0000 | [diff] [blame] | 2673 | } |
| 2674 | |
| 2675 | SourceLocation FunctionDecl::getPointOfInstantiation() const { |
Douglas Gregor | 2db3232 | 2009-10-07 23:56:10 +0000 | [diff] [blame] | 2676 | if (FunctionTemplateSpecializationInfo *FTSInfo |
| 2677 | = TemplateOrSpecialization.dyn_cast< |
| 2678 | FunctionTemplateSpecializationInfo*>()) |
Douglas Gregor | 0a897e3 | 2009-10-15 17:21:20 +0000 | [diff] [blame] | 2679 | return FTSInfo->getPointOfInstantiation(); |
Douglas Gregor | 2db3232 | 2009-10-07 23:56:10 +0000 | [diff] [blame] | 2680 | else if (MemberSpecializationInfo *MSInfo |
| 2681 | = TemplateOrSpecialization.dyn_cast<MemberSpecializationInfo*>()) |
Douglas Gregor | 0a897e3 | 2009-10-15 17:21:20 +0000 | [diff] [blame] | 2682 | return MSInfo->getPointOfInstantiation(); |
| 2683 | |
| 2684 | return SourceLocation(); |
Douglas Gregor | 1fd2dd1 | 2009-06-29 22:39:32 +0000 | [diff] [blame] | 2685 | } |
| 2686 | |
Douglas Gregor | 9f18507 | 2009-09-11 20:15:17 +0000 | [diff] [blame] | 2687 | bool FunctionDecl::isOutOfLine() const { |
Douglas Gregor | da2142f | 2011-02-19 18:51:44 +0000 | [diff] [blame] | 2688 | if (Decl::isOutOfLine()) |
Douglas Gregor | 9f18507 | 2009-09-11 20:15:17 +0000 | [diff] [blame] | 2689 | return true; |
| 2690 | |
| 2691 | // If this function was instantiated from a member function of a |
| 2692 | // class template, check whether that member function was defined out-of-line. |
| 2693 | if (FunctionDecl *FD = getInstantiatedFromMemberFunction()) { |
| 2694 | const FunctionDecl *Definition; |
Argyrios Kyrtzidis | 06a54a3 | 2010-07-07 11:31:19 +0000 | [diff] [blame] | 2695 | if (FD->hasBody(Definition)) |
Douglas Gregor | 9f18507 | 2009-09-11 20:15:17 +0000 | [diff] [blame] | 2696 | return Definition->isOutOfLine(); |
| 2697 | } |
| 2698 | |
| 2699 | // If this function was instantiated from a function template, |
| 2700 | // check whether that function template was defined out-of-line. |
| 2701 | if (FunctionTemplateDecl *FunTmpl = getPrimaryTemplate()) { |
| 2702 | const FunctionDecl *Definition; |
Argyrios Kyrtzidis | 06a54a3 | 2010-07-07 11:31:19 +0000 | [diff] [blame] | 2703 | if (FunTmpl->getTemplatedDecl()->hasBody(Definition)) |
Douglas Gregor | 9f18507 | 2009-09-11 20:15:17 +0000 | [diff] [blame] | 2704 | return Definition->isOutOfLine(); |
| 2705 | } |
| 2706 | |
| 2707 | return false; |
| 2708 | } |
| 2709 | |
Abramo Bagnara | a2026c9 | 2011-03-08 16:41:52 +0000 | [diff] [blame] | 2710 | SourceRange FunctionDecl::getSourceRange() const { |
| 2711 | return SourceRange(getOuterLocStart(), EndRangeLoc); |
| 2712 | } |
| 2713 | |
Anna Zaks | 9392d4e | 2012-01-18 02:45:01 +0000 | [diff] [blame] | 2714 | unsigned FunctionDecl::getMemoryFunctionKind() const { |
Anna Zaks | d9b859a | 2012-01-13 21:52:01 +0000 | [diff] [blame] | 2715 | IdentifierInfo *FnInfo = getIdentifier(); |
| 2716 | |
| 2717 | if (!FnInfo) |
Anna Zaks | 0a151a1 | 2012-01-17 00:37:07 +0000 | [diff] [blame] | 2718 | return 0; |
Anna Zaks | d9b859a | 2012-01-13 21:52:01 +0000 | [diff] [blame] | 2719 | |
| 2720 | // Builtin handling. |
| 2721 | switch (getBuiltinID()) { |
| 2722 | case Builtin::BI__builtin_memset: |
| 2723 | case Builtin::BI__builtin___memset_chk: |
| 2724 | case Builtin::BImemset: |
Anna Zaks | 0a151a1 | 2012-01-17 00:37:07 +0000 | [diff] [blame] | 2725 | return Builtin::BImemset; |
Anna Zaks | d9b859a | 2012-01-13 21:52:01 +0000 | [diff] [blame] | 2726 | |
| 2727 | case Builtin::BI__builtin_memcpy: |
| 2728 | case Builtin::BI__builtin___memcpy_chk: |
| 2729 | case Builtin::BImemcpy: |
Anna Zaks | 0a151a1 | 2012-01-17 00:37:07 +0000 | [diff] [blame] | 2730 | return Builtin::BImemcpy; |
Anna Zaks | d9b859a | 2012-01-13 21:52:01 +0000 | [diff] [blame] | 2731 | |
| 2732 | case Builtin::BI__builtin_memmove: |
| 2733 | case Builtin::BI__builtin___memmove_chk: |
| 2734 | case Builtin::BImemmove: |
Anna Zaks | 0a151a1 | 2012-01-17 00:37:07 +0000 | [diff] [blame] | 2735 | return Builtin::BImemmove; |
Anna Zaks | d9b859a | 2012-01-13 21:52:01 +0000 | [diff] [blame] | 2736 | |
| 2737 | case Builtin::BIstrlcpy: |
Anna Zaks | 0a151a1 | 2012-01-17 00:37:07 +0000 | [diff] [blame] | 2738 | return Builtin::BIstrlcpy; |
Anna Zaks | d9b859a | 2012-01-13 21:52:01 +0000 | [diff] [blame] | 2739 | case Builtin::BIstrlcat: |
Anna Zaks | 0a151a1 | 2012-01-17 00:37:07 +0000 | [diff] [blame] | 2740 | return Builtin::BIstrlcat; |
Anna Zaks | d9b859a | 2012-01-13 21:52:01 +0000 | [diff] [blame] | 2741 | |
| 2742 | case Builtin::BI__builtin_memcmp: |
Anna Zaks | 0a151a1 | 2012-01-17 00:37:07 +0000 | [diff] [blame] | 2743 | case Builtin::BImemcmp: |
| 2744 | return Builtin::BImemcmp; |
Anna Zaks | d9b859a | 2012-01-13 21:52:01 +0000 | [diff] [blame] | 2745 | |
| 2746 | case Builtin::BI__builtin_strncpy: |
| 2747 | case Builtin::BI__builtin___strncpy_chk: |
| 2748 | case Builtin::BIstrncpy: |
Anna Zaks | 0a151a1 | 2012-01-17 00:37:07 +0000 | [diff] [blame] | 2749 | return Builtin::BIstrncpy; |
Anna Zaks | d9b859a | 2012-01-13 21:52:01 +0000 | [diff] [blame] | 2750 | |
| 2751 | case Builtin::BI__builtin_strncmp: |
Anna Zaks | 0a151a1 | 2012-01-17 00:37:07 +0000 | [diff] [blame] | 2752 | case Builtin::BIstrncmp: |
| 2753 | return Builtin::BIstrncmp; |
Anna Zaks | d9b859a | 2012-01-13 21:52:01 +0000 | [diff] [blame] | 2754 | |
| 2755 | case Builtin::BI__builtin_strncasecmp: |
Anna Zaks | 0a151a1 | 2012-01-17 00:37:07 +0000 | [diff] [blame] | 2756 | case Builtin::BIstrncasecmp: |
| 2757 | return Builtin::BIstrncasecmp; |
Anna Zaks | d9b859a | 2012-01-13 21:52:01 +0000 | [diff] [blame] | 2758 | |
| 2759 | case Builtin::BI__builtin_strncat: |
Anna Zaks | c36bedc | 2012-02-01 19:08:57 +0000 | [diff] [blame] | 2760 | case Builtin::BI__builtin___strncat_chk: |
Anna Zaks | d9b859a | 2012-01-13 21:52:01 +0000 | [diff] [blame] | 2761 | case Builtin::BIstrncat: |
Anna Zaks | 0a151a1 | 2012-01-17 00:37:07 +0000 | [diff] [blame] | 2762 | return Builtin::BIstrncat; |
Anna Zaks | d9b859a | 2012-01-13 21:52:01 +0000 | [diff] [blame] | 2763 | |
| 2764 | case Builtin::BI__builtin_strndup: |
| 2765 | case Builtin::BIstrndup: |
Anna Zaks | 0a151a1 | 2012-01-17 00:37:07 +0000 | [diff] [blame] | 2766 | return Builtin::BIstrndup; |
Anna Zaks | d9b859a | 2012-01-13 21:52:01 +0000 | [diff] [blame] | 2767 | |
Anna Zaks | c36bedc | 2012-02-01 19:08:57 +0000 | [diff] [blame] | 2768 | case Builtin::BI__builtin_strlen: |
| 2769 | case Builtin::BIstrlen: |
| 2770 | return Builtin::BIstrlen; |
| 2771 | |
Anna Zaks | d9b859a | 2012-01-13 21:52:01 +0000 | [diff] [blame] | 2772 | default: |
Rafael Espindola | d2fdd42 | 2013-02-14 01:47:04 +0000 | [diff] [blame] | 2773 | if (isExternC()) { |
Anna Zaks | d9b859a | 2012-01-13 21:52:01 +0000 | [diff] [blame] | 2774 | if (FnInfo->isStr("memset")) |
Anna Zaks | 0a151a1 | 2012-01-17 00:37:07 +0000 | [diff] [blame] | 2775 | return Builtin::BImemset; |
Anna Zaks | d9b859a | 2012-01-13 21:52:01 +0000 | [diff] [blame] | 2776 | else if (FnInfo->isStr("memcpy")) |
Anna Zaks | 0a151a1 | 2012-01-17 00:37:07 +0000 | [diff] [blame] | 2777 | return Builtin::BImemcpy; |
Anna Zaks | d9b859a | 2012-01-13 21:52:01 +0000 | [diff] [blame] | 2778 | else if (FnInfo->isStr("memmove")) |
Anna Zaks | 0a151a1 | 2012-01-17 00:37:07 +0000 | [diff] [blame] | 2779 | return Builtin::BImemmove; |
Anna Zaks | d9b859a | 2012-01-13 21:52:01 +0000 | [diff] [blame] | 2780 | else if (FnInfo->isStr("memcmp")) |
Anna Zaks | 0a151a1 | 2012-01-17 00:37:07 +0000 | [diff] [blame] | 2781 | return Builtin::BImemcmp; |
Anna Zaks | d9b859a | 2012-01-13 21:52:01 +0000 | [diff] [blame] | 2782 | else if (FnInfo->isStr("strncpy")) |
Anna Zaks | 0a151a1 | 2012-01-17 00:37:07 +0000 | [diff] [blame] | 2783 | return Builtin::BIstrncpy; |
Anna Zaks | d9b859a | 2012-01-13 21:52:01 +0000 | [diff] [blame] | 2784 | else if (FnInfo->isStr("strncmp")) |
Anna Zaks | 0a151a1 | 2012-01-17 00:37:07 +0000 | [diff] [blame] | 2785 | return Builtin::BIstrncmp; |
Anna Zaks | d9b859a | 2012-01-13 21:52:01 +0000 | [diff] [blame] | 2786 | else if (FnInfo->isStr("strncasecmp")) |
Anna Zaks | 0a151a1 | 2012-01-17 00:37:07 +0000 | [diff] [blame] | 2787 | return Builtin::BIstrncasecmp; |
Anna Zaks | d9b859a | 2012-01-13 21:52:01 +0000 | [diff] [blame] | 2788 | else if (FnInfo->isStr("strncat")) |
Anna Zaks | 0a151a1 | 2012-01-17 00:37:07 +0000 | [diff] [blame] | 2789 | return Builtin::BIstrncat; |
Anna Zaks | d9b859a | 2012-01-13 21:52:01 +0000 | [diff] [blame] | 2790 | else if (FnInfo->isStr("strndup")) |
Anna Zaks | 0a151a1 | 2012-01-17 00:37:07 +0000 | [diff] [blame] | 2791 | return Builtin::BIstrndup; |
Anna Zaks | c36bedc | 2012-02-01 19:08:57 +0000 | [diff] [blame] | 2792 | else if (FnInfo->isStr("strlen")) |
| 2793 | return Builtin::BIstrlen; |
Anna Zaks | d9b859a | 2012-01-13 21:52:01 +0000 | [diff] [blame] | 2794 | } |
| 2795 | break; |
| 2796 | } |
Anna Zaks | 0a151a1 | 2012-01-17 00:37:07 +0000 | [diff] [blame] | 2797 | return 0; |
Anna Zaks | d9b859a | 2012-01-13 21:52:01 +0000 | [diff] [blame] | 2798 | } |
| 2799 | |
Chris Lattner | 8a93423 | 2008-03-31 00:36:02 +0000 | [diff] [blame] | 2800 | //===----------------------------------------------------------------------===// |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 2801 | // FieldDecl Implementation |
| 2802 | //===----------------------------------------------------------------------===// |
| 2803 | |
Jay Foad | 4ba2a17 | 2011-01-12 09:06:06 +0000 | [diff] [blame] | 2804 | FieldDecl *FieldDecl::Create(const ASTContext &C, DeclContext *DC, |
Abramo Bagnara | ff676cb | 2011-03-08 08:55:46 +0000 | [diff] [blame] | 2805 | SourceLocation StartLoc, SourceLocation IdLoc, |
| 2806 | IdentifierInfo *Id, QualType T, |
Richard Smith | 7a614d8 | 2011-06-11 17:19:42 +0000 | [diff] [blame] | 2807 | TypeSourceInfo *TInfo, Expr *BW, bool Mutable, |
Richard Smith | ca52330 | 2012-06-10 03:12:00 +0000 | [diff] [blame] | 2808 | InClassInitStyle InitStyle) { |
Abramo Bagnara | ff676cb | 2011-03-08 08:55:46 +0000 | [diff] [blame] | 2809 | return new (C) FieldDecl(Decl::Field, DC, StartLoc, IdLoc, Id, T, TInfo, |
Richard Smith | ca52330 | 2012-06-10 03:12:00 +0000 | [diff] [blame] | 2810 | BW, Mutable, InitStyle); |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 2811 | } |
| 2812 | |
Douglas Gregor | 1e68ecc | 2012-01-05 21:55:30 +0000 | [diff] [blame] | 2813 | FieldDecl *FieldDecl::CreateDeserialized(ASTContext &C, unsigned ID) { |
| 2814 | void *Mem = AllocateDeserializedDecl(C, ID, sizeof(FieldDecl)); |
| 2815 | return new (Mem) FieldDecl(Field, 0, SourceLocation(), SourceLocation(), |
Richard Smith | ca52330 | 2012-06-10 03:12:00 +0000 | [diff] [blame] | 2816 | 0, QualType(), 0, 0, false, ICIS_NoInit); |
Douglas Gregor | 1e68ecc | 2012-01-05 21:55:30 +0000 | [diff] [blame] | 2817 | } |
| 2818 | |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 2819 | bool FieldDecl::isAnonymousStructOrUnion() const { |
| 2820 | if (!isImplicit() || getDeclName()) |
| 2821 | return false; |
| 2822 | |
| 2823 | if (const RecordType *Record = getType()->getAs<RecordType>()) |
| 2824 | return Record->getDecl()->isAnonymousStructOrUnion(); |
| 2825 | |
| 2826 | return false; |
| 2827 | } |
| 2828 | |
Richard Smith | a6b8b2c | 2011-10-10 18:28:20 +0000 | [diff] [blame] | 2829 | unsigned FieldDecl::getBitWidthValue(const ASTContext &Ctx) const { |
| 2830 | assert(isBitField() && "not a bitfield"); |
| 2831 | Expr *BitWidth = InitializerOrBitWidth.getPointer(); |
| 2832 | return BitWidth->EvaluateKnownConstInt(Ctx).getZExtValue(); |
| 2833 | } |
| 2834 | |
John McCall | ba4f5d5 | 2011-01-20 07:57:12 +0000 | [diff] [blame] | 2835 | unsigned FieldDecl::getFieldIndex() const { |
| 2836 | if (CachedFieldIndex) return CachedFieldIndex - 1; |
| 2837 | |
Richard Smith | 180f479 | 2011-11-10 06:34:14 +0000 | [diff] [blame] | 2838 | unsigned Index = 0; |
Fariborz Jahanian | 07a8a21 | 2011-04-28 22:49:46 +0000 | [diff] [blame] | 2839 | const RecordDecl *RD = getParent(); |
| 2840 | const FieldDecl *LastFD = 0; |
Eli Friedman | 5f608ae | 2012-10-12 23:29:20 +0000 | [diff] [blame] | 2841 | bool IsMsStruct = RD->isMsStruct(getASTContext()); |
Richard Smith | 180f479 | 2011-11-10 06:34:14 +0000 | [diff] [blame] | 2842 | |
| 2843 | for (RecordDecl::field_iterator I = RD->field_begin(), E = RD->field_end(); |
| 2844 | I != E; ++I, ++Index) { |
David Blaikie | 262bc18 | 2012-04-30 02:36:29 +0000 | [diff] [blame] | 2845 | I->CachedFieldIndex = Index + 1; |
John McCall | ba4f5d5 | 2011-01-20 07:57:12 +0000 | [diff] [blame] | 2846 | |
Fariborz Jahanian | 07a8a21 | 2011-04-28 22:49:46 +0000 | [diff] [blame] | 2847 | if (IsMsStruct) { |
| 2848 | // Zero-length bitfields following non-bitfield members are ignored. |
David Blaikie | 581deb3 | 2012-06-06 20:45:41 +0000 | [diff] [blame] | 2849 | if (getASTContext().ZeroBitfieldFollowsNonBitfield(*I, LastFD)) { |
Richard Smith | 180f479 | 2011-11-10 06:34:14 +0000 | [diff] [blame] | 2850 | --Index; |
Fariborz Jahanian | 07a8a21 | 2011-04-28 22:49:46 +0000 | [diff] [blame] | 2851 | continue; |
| 2852 | } |
David Blaikie | 581deb3 | 2012-06-06 20:45:41 +0000 | [diff] [blame] | 2853 | LastFD = *I; |
Fariborz Jahanian | 07a8a21 | 2011-04-28 22:49:46 +0000 | [diff] [blame] | 2854 | } |
John McCall | ba4f5d5 | 2011-01-20 07:57:12 +0000 | [diff] [blame] | 2855 | } |
| 2856 | |
Richard Smith | 180f479 | 2011-11-10 06:34:14 +0000 | [diff] [blame] | 2857 | assert(CachedFieldIndex && "failed to find field in parent"); |
| 2858 | return CachedFieldIndex - 1; |
John McCall | ba4f5d5 | 2011-01-20 07:57:12 +0000 | [diff] [blame] | 2859 | } |
| 2860 | |
Abramo Bagnara | f2cf562 | 2011-03-08 11:07:11 +0000 | [diff] [blame] | 2861 | SourceRange FieldDecl::getSourceRange() const { |
Abramo Bagnara | d330e23 | 2011-08-05 08:02:55 +0000 | [diff] [blame] | 2862 | if (const Expr *E = InitializerOrBitWidth.getPointer()) |
| 2863 | return SourceRange(getInnerLocStart(), E->getLocEnd()); |
Abramo Bagnara | a2026c9 | 2011-03-08 16:41:52 +0000 | [diff] [blame] | 2864 | return DeclaratorDecl::getSourceRange(); |
Abramo Bagnara | f2cf562 | 2011-03-08 11:07:11 +0000 | [diff] [blame] | 2865 | } |
| 2866 | |
Abramo Bagnara | a533576 | 2012-07-02 20:35:48 +0000 | [diff] [blame] | 2867 | void FieldDecl::setBitWidth(Expr *Width) { |
| 2868 | assert(!InitializerOrBitWidth.getPointer() && !hasInClassInitializer() && |
| 2869 | "bit width or initializer already set"); |
| 2870 | InitializerOrBitWidth.setPointer(Width); |
| 2871 | } |
| 2872 | |
Richard Smith | 7a614d8 | 2011-06-11 17:19:42 +0000 | [diff] [blame] | 2873 | void FieldDecl::setInClassInitializer(Expr *Init) { |
Richard Smith | ca52330 | 2012-06-10 03:12:00 +0000 | [diff] [blame] | 2874 | assert(!InitializerOrBitWidth.getPointer() && hasInClassInitializer() && |
Richard Smith | 7a614d8 | 2011-06-11 17:19:42 +0000 | [diff] [blame] | 2875 | "bit width or initializer already set"); |
| 2876 | InitializerOrBitWidth.setPointer(Init); |
Richard Smith | 7a614d8 | 2011-06-11 17:19:42 +0000 | [diff] [blame] | 2877 | } |
| 2878 | |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 2879 | //===----------------------------------------------------------------------===// |
Douglas Gregor | bcbffc4 | 2009-01-07 00:43:41 +0000 | [diff] [blame] | 2880 | // TagDecl Implementation |
Ted Kremenek | 4b7c983 | 2008-09-05 17:16:31 +0000 | [diff] [blame] | 2881 | //===----------------------------------------------------------------------===// |
| 2882 | |
Douglas Gregor | 1693e15 | 2010-07-06 18:42:40 +0000 | [diff] [blame] | 2883 | SourceLocation TagDecl::getOuterLocStart() const { |
| 2884 | return getTemplateOrInnerLocStart(this); |
| 2885 | } |
| 2886 | |
Argyrios Kyrtzidis | f602c8b | 2009-07-14 03:17:17 +0000 | [diff] [blame] | 2887 | SourceRange TagDecl::getSourceRange() const { |
| 2888 | SourceLocation E = RBraceLoc.isValid() ? RBraceLoc : getLocation(); |
Douglas Gregor | 1693e15 | 2010-07-06 18:42:40 +0000 | [diff] [blame] | 2889 | return SourceRange(getOuterLocStart(), E); |
Argyrios Kyrtzidis | f602c8b | 2009-07-14 03:17:17 +0000 | [diff] [blame] | 2890 | } |
| 2891 | |
Argyrios Kyrtzidis | b57a4fe | 2009-07-18 00:34:07 +0000 | [diff] [blame] | 2892 | TagDecl* TagDecl::getCanonicalDecl() { |
Douglas Gregor | 8e9e9ef | 2009-07-29 23:36:44 +0000 | [diff] [blame] | 2893 | return getFirstDeclaration(); |
Argyrios Kyrtzidis | b57a4fe | 2009-07-18 00:34:07 +0000 | [diff] [blame] | 2894 | } |
| 2895 | |
Rafael Espindola | 2d9e883 | 2013-03-12 21:06:00 +0000 | [diff] [blame] | 2896 | void TagDecl::setTypedefNameForAnonDecl(TypedefNameDecl *TDD) { |
| 2897 | TypedefNameDeclOrQualifier = TDD; |
Douglas Gregor | 60e7064 | 2010-05-19 18:39:18 +0000 | [diff] [blame] | 2898 | if (TypeForDecl) |
Rafael Espindola | 2d1b096 | 2013-03-14 03:07:35 +0000 | [diff] [blame] | 2899 | assert(TypeForDecl->isLinkageValid()); |
| 2900 | assert(isLinkageValid()); |
Douglas Gregor | 60e7064 | 2010-05-19 18:39:18 +0000 | [diff] [blame] | 2901 | } |
| 2902 | |
Douglas Gregor | 0b7a158 | 2009-01-17 00:42:38 +0000 | [diff] [blame] | 2903 | void TagDecl::startDefinition() { |
Sebastian Redl | ed48a8f | 2010-08-02 18:27:05 +0000 | [diff] [blame] | 2904 | IsBeingDefined = true; |
John McCall | 86ff308 | 2010-02-04 22:26:26 +0000 | [diff] [blame] | 2905 | |
David Blaikie | 66cff72 | 2012-11-14 01:52:05 +0000 | [diff] [blame] | 2906 | if (CXXRecordDecl *D = dyn_cast<CXXRecordDecl>(this)) { |
John McCall | 86ff308 | 2010-02-04 22:26:26 +0000 | [diff] [blame] | 2907 | struct CXXRecordDecl::DefinitionData *Data = |
| 2908 | new (getASTContext()) struct CXXRecordDecl::DefinitionData(D); |
John McCall | 2243288 | 2010-03-26 21:56:38 +0000 | [diff] [blame] | 2909 | for (redecl_iterator I = redecls_begin(), E = redecls_end(); I != E; ++I) |
| 2910 | cast<CXXRecordDecl>(*I)->DefinitionData = Data; |
John McCall | 86ff308 | 2010-02-04 22:26:26 +0000 | [diff] [blame] | 2911 | } |
Douglas Gregor | 0b7a158 | 2009-01-17 00:42:38 +0000 | [diff] [blame] | 2912 | } |
| 2913 | |
| 2914 | void TagDecl::completeDefinition() { |
John McCall | 5cfa011 | 2010-02-05 01:33:36 +0000 | [diff] [blame] | 2915 | assert((!isa<CXXRecordDecl>(this) || |
| 2916 | cast<CXXRecordDecl>(this)->hasDefinition()) && |
| 2917 | "definition completed but not started"); |
| 2918 | |
John McCall | 5e1cdac | 2011-10-07 06:10:15 +0000 | [diff] [blame] | 2919 | IsCompleteDefinition = true; |
Sebastian Redl | ed48a8f | 2010-08-02 18:27:05 +0000 | [diff] [blame] | 2920 | IsBeingDefined = false; |
Argyrios Kyrtzidis | 565bf30 | 2010-10-24 17:26:50 +0000 | [diff] [blame] | 2921 | |
| 2922 | if (ASTMutationListener *L = getASTMutationListener()) |
| 2923 | L->CompletedTagDefinition(this); |
Douglas Gregor | 0b7a158 | 2009-01-17 00:42:38 +0000 | [diff] [blame] | 2924 | } |
| 2925 | |
John McCall | 5e1cdac | 2011-10-07 06:10:15 +0000 | [diff] [blame] | 2926 | TagDecl *TagDecl::getDefinition() const { |
| 2927 | if (isCompleteDefinition()) |
Douglas Gregor | 8e9e9ef | 2009-07-29 23:36:44 +0000 | [diff] [blame] | 2928 | return const_cast<TagDecl *>(this); |
Douglas Gregor | 6bd9929 | 2013-02-09 01:35:03 +0000 | [diff] [blame] | 2929 | |
| 2930 | // If it's possible for us to have an out-of-date definition, check now. |
| 2931 | if (MayHaveOutOfDateDef) { |
| 2932 | if (IdentifierInfo *II = getIdentifier()) { |
| 2933 | if (II->isOutOfDate()) { |
| 2934 | updateOutOfDate(*II); |
| 2935 | } |
| 2936 | } |
| 2937 | } |
| 2938 | |
Andrew Trick | 220a9c8 | 2010-10-19 21:54:32 +0000 | [diff] [blame] | 2939 | if (const CXXRecordDecl *CXXRD = dyn_cast<CXXRecordDecl>(this)) |
| 2940 | return CXXRD->getDefinition(); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2941 | |
| 2942 | for (redecl_iterator R = redecls_begin(), REnd = redecls_end(); |
Douglas Gregor | 8e9e9ef | 2009-07-29 23:36:44 +0000 | [diff] [blame] | 2943 | R != REnd; ++R) |
John McCall | 5e1cdac | 2011-10-07 06:10:15 +0000 | [diff] [blame] | 2944 | if (R->isCompleteDefinition()) |
Douglas Gregor | 8e9e9ef | 2009-07-29 23:36:44 +0000 | [diff] [blame] | 2945 | return *R; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2946 | |
Douglas Gregor | 8e9e9ef | 2009-07-29 23:36:44 +0000 | [diff] [blame] | 2947 | return 0; |
Ted Kremenek | 4b7c983 | 2008-09-05 17:16:31 +0000 | [diff] [blame] | 2948 | } |
| 2949 | |
Douglas Gregor | c22b5ff | 2011-02-25 02:25:35 +0000 | [diff] [blame] | 2950 | void TagDecl::setQualifierInfo(NestedNameSpecifierLoc QualifierLoc) { |
| 2951 | if (QualifierLoc) { |
John McCall | b621766 | 2010-03-15 10:12:16 +0000 | [diff] [blame] | 2952 | // Make sure the extended qualifier info is allocated. |
| 2953 | if (!hasExtInfo()) |
Richard Smith | 162e1c1 | 2011-04-15 14:24:37 +0000 | [diff] [blame] | 2954 | TypedefNameDeclOrQualifier = new (getASTContext()) ExtInfo; |
John McCall | b621766 | 2010-03-15 10:12:16 +0000 | [diff] [blame] | 2955 | // Set qualifier info. |
Douglas Gregor | c22b5ff | 2011-02-25 02:25:35 +0000 | [diff] [blame] | 2956 | getExtInfo()->QualifierLoc = QualifierLoc; |
Chad Rosier | 3060178 | 2011-08-17 23:08:45 +0000 | [diff] [blame] | 2957 | } else { |
John McCall | b621766 | 2010-03-15 10:12:16 +0000 | [diff] [blame] | 2958 | // Here Qualifier == 0, i.e., we are removing the qualifier (if any). |
John McCall | b621766 | 2010-03-15 10:12:16 +0000 | [diff] [blame] | 2959 | if (hasExtInfo()) { |
Abramo Bagnara | 7f0a915 | 2011-03-18 15:16:37 +0000 | [diff] [blame] | 2960 | if (getExtInfo()->NumTemplParamLists == 0) { |
| 2961 | getASTContext().Deallocate(getExtInfo()); |
Richard Smith | 162e1c1 | 2011-04-15 14:24:37 +0000 | [diff] [blame] | 2962 | TypedefNameDeclOrQualifier = (TypedefNameDecl*) 0; |
Abramo Bagnara | 7f0a915 | 2011-03-18 15:16:37 +0000 | [diff] [blame] | 2963 | } |
| 2964 | else |
| 2965 | getExtInfo()->QualifierLoc = QualifierLoc; |
John McCall | b621766 | 2010-03-15 10:12:16 +0000 | [diff] [blame] | 2966 | } |
| 2967 | } |
| 2968 | } |
| 2969 | |
Abramo Bagnara | 7f0a915 | 2011-03-18 15:16:37 +0000 | [diff] [blame] | 2970 | void TagDecl::setTemplateParameterListsInfo(ASTContext &Context, |
| 2971 | unsigned NumTPLists, |
| 2972 | TemplateParameterList **TPLists) { |
| 2973 | assert(NumTPLists > 0); |
| 2974 | // Make sure the extended decl info is allocated. |
| 2975 | if (!hasExtInfo()) |
| 2976 | // Allocate external info struct. |
Richard Smith | 162e1c1 | 2011-04-15 14:24:37 +0000 | [diff] [blame] | 2977 | TypedefNameDeclOrQualifier = new (getASTContext()) ExtInfo; |
Abramo Bagnara | 7f0a915 | 2011-03-18 15:16:37 +0000 | [diff] [blame] | 2978 | // Set the template parameter lists info. |
| 2979 | getExtInfo()->setTemplateParameterListsInfo(Context, NumTPLists, TPLists); |
| 2980 | } |
| 2981 | |
Ted Kremenek | 4b7c983 | 2008-09-05 17:16:31 +0000 | [diff] [blame] | 2982 | //===----------------------------------------------------------------------===// |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 2983 | // EnumDecl Implementation |
| 2984 | //===----------------------------------------------------------------------===// |
| 2985 | |
David Blaikie | 99ba9e3 | 2011-12-20 02:48:34 +0000 | [diff] [blame] | 2986 | void EnumDecl::anchor() { } |
| 2987 | |
Abramo Bagnara | ba877ad | 2011-03-09 14:09:51 +0000 | [diff] [blame] | 2988 | EnumDecl *EnumDecl::Create(ASTContext &C, DeclContext *DC, |
| 2989 | SourceLocation StartLoc, SourceLocation IdLoc, |
| 2990 | IdentifierInfo *Id, |
Abramo Bagnara | a88cefd | 2010-12-03 18:54:17 +0000 | [diff] [blame] | 2991 | EnumDecl *PrevDecl, bool IsScoped, |
| 2992 | bool IsScopedUsingClassTag, bool IsFixed) { |
Abramo Bagnara | ba877ad | 2011-03-09 14:09:51 +0000 | [diff] [blame] | 2993 | EnumDecl *Enum = new (C) EnumDecl(DC, StartLoc, IdLoc, Id, PrevDecl, |
Abramo Bagnara | a88cefd | 2010-12-03 18:54:17 +0000 | [diff] [blame] | 2994 | IsScoped, IsScopedUsingClassTag, IsFixed); |
Douglas Gregor | 6bd9929 | 2013-02-09 01:35:03 +0000 | [diff] [blame] | 2995 | Enum->MayHaveOutOfDateDef = C.getLangOpts().Modules; |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 2996 | C.getTypeDeclType(Enum, PrevDecl); |
| 2997 | return Enum; |
| 2998 | } |
| 2999 | |
Douglas Gregor | 1e68ecc | 2012-01-05 21:55:30 +0000 | [diff] [blame] | 3000 | EnumDecl *EnumDecl::CreateDeserialized(ASTContext &C, unsigned ID) { |
| 3001 | void *Mem = AllocateDeserializedDecl(C, ID, sizeof(EnumDecl)); |
Douglas Gregor | 6bd9929 | 2013-02-09 01:35:03 +0000 | [diff] [blame] | 3002 | EnumDecl *Enum = new (Mem) EnumDecl(0, SourceLocation(), SourceLocation(), |
| 3003 | 0, 0, false, false, false); |
| 3004 | Enum->MayHaveOutOfDateDef = C.getLangOpts().Modules; |
| 3005 | return Enum; |
Argyrios Kyrtzidis | b8b03e6 | 2010-07-02 11:54:55 +0000 | [diff] [blame] | 3006 | } |
| 3007 | |
Douglas Gregor | 838db38 | 2010-02-11 01:19:42 +0000 | [diff] [blame] | 3008 | void EnumDecl::completeDefinition(QualType NewType, |
John McCall | 1b5a618 | 2010-05-06 08:49:23 +0000 | [diff] [blame] | 3009 | QualType NewPromotionType, |
| 3010 | unsigned NumPositiveBits, |
| 3011 | unsigned NumNegativeBits) { |
John McCall | 5e1cdac | 2011-10-07 06:10:15 +0000 | [diff] [blame] | 3012 | assert(!isCompleteDefinition() && "Cannot redefine enums!"); |
Douglas Gregor | 1274ccd | 2010-10-08 23:50:27 +0000 | [diff] [blame] | 3013 | if (!IntegerType) |
| 3014 | IntegerType = NewType.getTypePtr(); |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 3015 | PromotionType = NewPromotionType; |
John McCall | 1b5a618 | 2010-05-06 08:49:23 +0000 | [diff] [blame] | 3016 | setNumPositiveBits(NumPositiveBits); |
| 3017 | setNumNegativeBits(NumNegativeBits); |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 3018 | TagDecl::completeDefinition(); |
| 3019 | } |
| 3020 | |
Richard Smith | 1af83c4 | 2012-03-23 03:33:32 +0000 | [diff] [blame] | 3021 | TemplateSpecializationKind EnumDecl::getTemplateSpecializationKind() const { |
| 3022 | if (MemberSpecializationInfo *MSI = getMemberSpecializationInfo()) |
| 3023 | return MSI->getTemplateSpecializationKind(); |
| 3024 | |
| 3025 | return TSK_Undeclared; |
| 3026 | } |
| 3027 | |
| 3028 | void EnumDecl::setTemplateSpecializationKind(TemplateSpecializationKind TSK, |
| 3029 | SourceLocation PointOfInstantiation) { |
| 3030 | MemberSpecializationInfo *MSI = getMemberSpecializationInfo(); |
| 3031 | assert(MSI && "Not an instantiated member enumeration?"); |
| 3032 | MSI->setTemplateSpecializationKind(TSK); |
| 3033 | if (TSK != TSK_ExplicitSpecialization && |
| 3034 | PointOfInstantiation.isValid() && |
| 3035 | MSI->getPointOfInstantiation().isInvalid()) |
| 3036 | MSI->setPointOfInstantiation(PointOfInstantiation); |
| 3037 | } |
| 3038 | |
Richard Smith | f1c66b4 | 2012-03-14 23:13:10 +0000 | [diff] [blame] | 3039 | EnumDecl *EnumDecl::getInstantiatedFromMemberEnum() const { |
| 3040 | if (SpecializationInfo) |
| 3041 | return cast<EnumDecl>(SpecializationInfo->getInstantiatedFrom()); |
| 3042 | |
| 3043 | return 0; |
| 3044 | } |
| 3045 | |
| 3046 | void EnumDecl::setInstantiationOfMemberEnum(ASTContext &C, EnumDecl *ED, |
| 3047 | TemplateSpecializationKind TSK) { |
| 3048 | assert(!SpecializationInfo && "Member enum is already a specialization"); |
| 3049 | SpecializationInfo = new (C) MemberSpecializationInfo(ED, TSK); |
| 3050 | } |
| 3051 | |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 3052 | //===----------------------------------------------------------------------===// |
Chris Lattner | 8a93423 | 2008-03-31 00:36:02 +0000 | [diff] [blame] | 3053 | // RecordDecl Implementation |
| 3054 | //===----------------------------------------------------------------------===// |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 3055 | |
Abramo Bagnara | ba877ad | 2011-03-09 14:09:51 +0000 | [diff] [blame] | 3056 | RecordDecl::RecordDecl(Kind DK, TagKind TK, DeclContext *DC, |
| 3057 | SourceLocation StartLoc, SourceLocation IdLoc, |
| 3058 | IdentifierInfo *Id, RecordDecl *PrevDecl) |
| 3059 | : TagDecl(DK, TK, DC, IdLoc, Id, PrevDecl, StartLoc) { |
Ted Kremenek | 6359792 | 2008-09-02 21:12:32 +0000 | [diff] [blame] | 3060 | HasFlexibleArrayMember = false; |
Douglas Gregor | bcbffc4 | 2009-01-07 00:43:41 +0000 | [diff] [blame] | 3061 | AnonymousStructOrUnion = false; |
Fariborz Jahanian | 082b02e | 2009-07-08 01:18:33 +0000 | [diff] [blame] | 3062 | HasObjectMember = false; |
Fariborz Jahanian | 3ac83d6 | 2013-01-25 23:57:05 +0000 | [diff] [blame] | 3063 | HasVolatileMember = false; |
Argyrios Kyrtzidis | eb5e998 | 2010-10-14 20:14:34 +0000 | [diff] [blame] | 3064 | LoadedFieldsFromExternalStorage = false; |
Ted Kremenek | 6359792 | 2008-09-02 21:12:32 +0000 | [diff] [blame] | 3065 | assert(classof(static_cast<Decl*>(this)) && "Invalid Kind!"); |
Ted Kremenek | 6359792 | 2008-09-02 21:12:32 +0000 | [diff] [blame] | 3066 | } |
| 3067 | |
Jay Foad | 4ba2a17 | 2011-01-12 09:06:06 +0000 | [diff] [blame] | 3068 | RecordDecl *RecordDecl::Create(const ASTContext &C, TagKind TK, DeclContext *DC, |
Abramo Bagnara | ba877ad | 2011-03-09 14:09:51 +0000 | [diff] [blame] | 3069 | SourceLocation StartLoc, SourceLocation IdLoc, |
| 3070 | IdentifierInfo *Id, RecordDecl* PrevDecl) { |
| 3071 | RecordDecl* R = new (C) RecordDecl(Record, TK, DC, StartLoc, IdLoc, Id, |
| 3072 | PrevDecl); |
Douglas Gregor | 6bd9929 | 2013-02-09 01:35:03 +0000 | [diff] [blame] | 3073 | R->MayHaveOutOfDateDef = C.getLangOpts().Modules; |
| 3074 | |
Ted Kremenek | 4b7c983 | 2008-09-05 17:16:31 +0000 | [diff] [blame] | 3075 | C.getTypeDeclType(R, PrevDecl); |
| 3076 | return R; |
Ted Kremenek | 6359792 | 2008-09-02 21:12:32 +0000 | [diff] [blame] | 3077 | } |
| 3078 | |
Douglas Gregor | 1e68ecc | 2012-01-05 21:55:30 +0000 | [diff] [blame] | 3079 | RecordDecl *RecordDecl::CreateDeserialized(const ASTContext &C, unsigned ID) { |
| 3080 | void *Mem = AllocateDeserializedDecl(C, ID, sizeof(RecordDecl)); |
Douglas Gregor | 6bd9929 | 2013-02-09 01:35:03 +0000 | [diff] [blame] | 3081 | RecordDecl *R = new (Mem) RecordDecl(Record, TTK_Struct, 0, SourceLocation(), |
| 3082 | SourceLocation(), 0, 0); |
| 3083 | R->MayHaveOutOfDateDef = C.getLangOpts().Modules; |
| 3084 | return R; |
Argyrios Kyrtzidis | b8b03e6 | 2010-07-02 11:54:55 +0000 | [diff] [blame] | 3085 | } |
| 3086 | |
Douglas Gregor | c9b5b40 | 2009-03-25 15:59:44 +0000 | [diff] [blame] | 3087 | bool RecordDecl::isInjectedClassName() const { |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 3088 | return isImplicit() && getDeclName() && getDeclContext()->isRecord() && |
Douglas Gregor | c9b5b40 | 2009-03-25 15:59:44 +0000 | [diff] [blame] | 3089 | cast<RecordDecl>(getDeclContext())->getDeclName() == getDeclName(); |
| 3090 | } |
| 3091 | |
Argyrios Kyrtzidis | eb5e998 | 2010-10-14 20:14:34 +0000 | [diff] [blame] | 3092 | RecordDecl::field_iterator RecordDecl::field_begin() const { |
| 3093 | if (hasExternalLexicalStorage() && !LoadedFieldsFromExternalStorage) |
| 3094 | LoadFieldsFromExternalStorage(); |
| 3095 | |
| 3096 | return field_iterator(decl_iterator(FirstDecl)); |
| 3097 | } |
| 3098 | |
Douglas Gregor | da2142f | 2011-02-19 18:51:44 +0000 | [diff] [blame] | 3099 | /// completeDefinition - Notes that the definition of this type is now |
| 3100 | /// complete. |
| 3101 | void RecordDecl::completeDefinition() { |
John McCall | 5e1cdac | 2011-10-07 06:10:15 +0000 | [diff] [blame] | 3102 | assert(!isCompleteDefinition() && "Cannot redefine record!"); |
Douglas Gregor | da2142f | 2011-02-19 18:51:44 +0000 | [diff] [blame] | 3103 | TagDecl::completeDefinition(); |
| 3104 | } |
| 3105 | |
Eli Friedman | 5f608ae | 2012-10-12 23:29:20 +0000 | [diff] [blame] | 3106 | /// isMsStruct - Get whether or not this record uses ms_struct layout. |
| 3107 | /// This which can be turned on with an attribute, pragma, or the |
| 3108 | /// -mms-bitfields command-line option. |
| 3109 | bool RecordDecl::isMsStruct(const ASTContext &C) const { |
| 3110 | return hasAttr<MsStructAttr>() || C.getLangOpts().MSBitfields == 1; |
| 3111 | } |
| 3112 | |
Argyrios Kyrtzidis | 22cd9ac | 2012-09-10 22:04:22 +0000 | [diff] [blame] | 3113 | static bool isFieldOrIndirectField(Decl::Kind K) { |
| 3114 | return FieldDecl::classofKind(K) || IndirectFieldDecl::classofKind(K); |
| 3115 | } |
| 3116 | |
Argyrios Kyrtzidis | eb5e998 | 2010-10-14 20:14:34 +0000 | [diff] [blame] | 3117 | void RecordDecl::LoadFieldsFromExternalStorage() const { |
| 3118 | ExternalASTSource *Source = getASTContext().getExternalSource(); |
| 3119 | assert(hasExternalLexicalStorage() && Source && "No external storage?"); |
| 3120 | |
| 3121 | // Notify that we have a RecordDecl doing some initialization. |
| 3122 | ExternalASTSource::Deserializing TheFields(Source); |
| 3123 | |
Chris Lattner | 5f9e272 | 2011-07-23 10:55:15 +0000 | [diff] [blame] | 3124 | SmallVector<Decl*, 64> Decls; |
Douglas Gregor | ba6ffaf | 2011-07-15 21:46:17 +0000 | [diff] [blame] | 3125 | LoadedFieldsFromExternalStorage = true; |
Argyrios Kyrtzidis | 22cd9ac | 2012-09-10 22:04:22 +0000 | [diff] [blame] | 3126 | switch (Source->FindExternalLexicalDecls(this, isFieldOrIndirectField, |
| 3127 | Decls)) { |
Douglas Gregor | ba6ffaf | 2011-07-15 21:46:17 +0000 | [diff] [blame] | 3128 | case ELR_Success: |
| 3129 | break; |
| 3130 | |
| 3131 | case ELR_AlreadyLoaded: |
| 3132 | case ELR_Failure: |
Argyrios Kyrtzidis | eb5e998 | 2010-10-14 20:14:34 +0000 | [diff] [blame] | 3133 | return; |
Douglas Gregor | ba6ffaf | 2011-07-15 21:46:17 +0000 | [diff] [blame] | 3134 | } |
Argyrios Kyrtzidis | eb5e998 | 2010-10-14 20:14:34 +0000 | [diff] [blame] | 3135 | |
| 3136 | #ifndef NDEBUG |
| 3137 | // Check that all decls we got were FieldDecls. |
| 3138 | for (unsigned i=0, e=Decls.size(); i != e; ++i) |
Argyrios Kyrtzidis | 22cd9ac | 2012-09-10 22:04:22 +0000 | [diff] [blame] | 3139 | assert(isa<FieldDecl>(Decls[i]) || isa<IndirectFieldDecl>(Decls[i])); |
Argyrios Kyrtzidis | eb5e998 | 2010-10-14 20:14:34 +0000 | [diff] [blame] | 3140 | #endif |
| 3141 | |
Argyrios Kyrtzidis | eb5e998 | 2010-10-14 20:14:34 +0000 | [diff] [blame] | 3142 | if (Decls.empty()) |
| 3143 | return; |
| 3144 | |
Argyrios Kyrtzidis | ec2ec1f | 2011-10-07 21:55:43 +0000 | [diff] [blame] | 3145 | llvm::tie(FirstDecl, LastDecl) = BuildDeclChain(Decls, |
| 3146 | /*FieldsAlreadyLoaded=*/false); |
Argyrios Kyrtzidis | eb5e998 | 2010-10-14 20:14:34 +0000 | [diff] [blame] | 3147 | } |
| 3148 | |
Steve Naroff | 56ee689 | 2008-10-08 17:01:13 +0000 | [diff] [blame] | 3149 | //===----------------------------------------------------------------------===// |
| 3150 | // BlockDecl Implementation |
| 3151 | //===----------------------------------------------------------------------===// |
| 3152 | |
Dmitri Gribenko | cfa88f8 | 2013-01-12 19:30:44 +0000 | [diff] [blame] | 3153 | void BlockDecl::setParams(ArrayRef<ParmVarDecl *> NewParamInfo) { |
Steve Naroff | e78b809 | 2009-03-13 16:56:44 +0000 | [diff] [blame] | 3154 | assert(ParamInfo == 0 && "Already has param info!"); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 3155 | |
Steve Naroff | e78b809 | 2009-03-13 16:56:44 +0000 | [diff] [blame] | 3156 | // Zero params -> null pointer. |
David Blaikie | 4278c65 | 2011-09-21 18:16:56 +0000 | [diff] [blame] | 3157 | if (!NewParamInfo.empty()) { |
| 3158 | NumParams = NewParamInfo.size(); |
| 3159 | ParamInfo = new (getASTContext()) ParmVarDecl*[NewParamInfo.size()]; |
| 3160 | std::copy(NewParamInfo.begin(), NewParamInfo.end(), ParamInfo); |
Steve Naroff | e78b809 | 2009-03-13 16:56:44 +0000 | [diff] [blame] | 3161 | } |
| 3162 | } |
| 3163 | |
John McCall | 6b5a61b | 2011-02-07 10:33:21 +0000 | [diff] [blame] | 3164 | void BlockDecl::setCaptures(ASTContext &Context, |
| 3165 | const Capture *begin, |
| 3166 | const Capture *end, |
| 3167 | bool capturesCXXThis) { |
John McCall | 469a1eb | 2011-02-02 13:00:07 +0000 | [diff] [blame] | 3168 | CapturesCXXThis = capturesCXXThis; |
| 3169 | |
| 3170 | if (begin == end) { |
John McCall | 6b5a61b | 2011-02-07 10:33:21 +0000 | [diff] [blame] | 3171 | NumCaptures = 0; |
| 3172 | Captures = 0; |
John McCall | 469a1eb | 2011-02-02 13:00:07 +0000 | [diff] [blame] | 3173 | return; |
| 3174 | } |
| 3175 | |
John McCall | 6b5a61b | 2011-02-07 10:33:21 +0000 | [diff] [blame] | 3176 | NumCaptures = end - begin; |
| 3177 | |
| 3178 | // Avoid new Capture[] because we don't want to provide a default |
| 3179 | // constructor. |
| 3180 | size_t allocationSize = NumCaptures * sizeof(Capture); |
| 3181 | void *buffer = Context.Allocate(allocationSize, /*alignment*/sizeof(void*)); |
| 3182 | memcpy(buffer, begin, allocationSize); |
| 3183 | Captures = static_cast<Capture*>(buffer); |
Steve Naroff | e78b809 | 2009-03-13 16:56:44 +0000 | [diff] [blame] | 3184 | } |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 3185 | |
John McCall | 204e133 | 2011-06-15 22:51:16 +0000 | [diff] [blame] | 3186 | bool BlockDecl::capturesVariable(const VarDecl *variable) const { |
| 3187 | for (capture_const_iterator |
| 3188 | i = capture_begin(), e = capture_end(); i != e; ++i) |
| 3189 | // Only auto vars can be captured, so no redeclaration worries. |
| 3190 | if (i->getVariable() == variable) |
| 3191 | return true; |
| 3192 | |
| 3193 | return false; |
| 3194 | } |
| 3195 | |
Douglas Gregor | 2fcbcef | 2010-12-21 16:27:07 +0000 | [diff] [blame] | 3196 | SourceRange BlockDecl::getSourceRange() const { |
| 3197 | return SourceRange(getLocation(), Body? Body->getLocEnd() : getLocation()); |
| 3198 | } |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 3199 | |
| 3200 | //===----------------------------------------------------------------------===// |
| 3201 | // Other Decl Allocation/Deallocation Method Implementations |
| 3202 | //===----------------------------------------------------------------------===// |
| 3203 | |
David Blaikie | 99ba9e3 | 2011-12-20 02:48:34 +0000 | [diff] [blame] | 3204 | void TranslationUnitDecl::anchor() { } |
| 3205 | |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 3206 | TranslationUnitDecl *TranslationUnitDecl::Create(ASTContext &C) { |
| 3207 | return new (C) TranslationUnitDecl(C); |
| 3208 | } |
| 3209 | |
David Blaikie | 99ba9e3 | 2011-12-20 02:48:34 +0000 | [diff] [blame] | 3210 | void LabelDecl::anchor() { } |
| 3211 | |
Chris Lattner | ad8dcf4 | 2011-02-17 07:39:24 +0000 | [diff] [blame] | 3212 | LabelDecl *LabelDecl::Create(ASTContext &C, DeclContext *DC, |
Abramo Bagnara | 6784304 | 2011-03-05 18:21:20 +0000 | [diff] [blame] | 3213 | SourceLocation IdentL, IdentifierInfo *II) { |
| 3214 | return new (C) LabelDecl(DC, IdentL, II, 0, IdentL); |
| 3215 | } |
| 3216 | |
| 3217 | LabelDecl *LabelDecl::Create(ASTContext &C, DeclContext *DC, |
| 3218 | SourceLocation IdentL, IdentifierInfo *II, |
| 3219 | SourceLocation GnuLabelL) { |
| 3220 | assert(GnuLabelL != IdentL && "Use this only for GNU local labels"); |
| 3221 | return new (C) LabelDecl(DC, IdentL, II, 0, GnuLabelL); |
Chris Lattner | ad8dcf4 | 2011-02-17 07:39:24 +0000 | [diff] [blame] | 3222 | } |
| 3223 | |
Douglas Gregor | 1e68ecc | 2012-01-05 21:55:30 +0000 | [diff] [blame] | 3224 | LabelDecl *LabelDecl::CreateDeserialized(ASTContext &C, unsigned ID) { |
| 3225 | void *Mem = AllocateDeserializedDecl(C, ID, sizeof(LabelDecl)); |
| 3226 | return new (Mem) LabelDecl(0, SourceLocation(), 0, 0, SourceLocation()); |
Douglas Gregor | 06c9193 | 2010-10-27 19:49:05 +0000 | [diff] [blame] | 3227 | } |
| 3228 | |
David Blaikie | 99ba9e3 | 2011-12-20 02:48:34 +0000 | [diff] [blame] | 3229 | void ValueDecl::anchor() { } |
| 3230 | |
Benjamin Kramer | 2fa67ef | 2012-12-01 15:09:41 +0000 | [diff] [blame] | 3231 | bool ValueDecl::isWeak() const { |
| 3232 | for (attr_iterator I = attr_begin(), E = attr_end(); I != E; ++I) |
| 3233 | if (isa<WeakAttr>(*I) || isa<WeakRefAttr>(*I)) |
| 3234 | return true; |
| 3235 | |
| 3236 | return isWeakImported(); |
| 3237 | } |
| 3238 | |
David Blaikie | 99ba9e3 | 2011-12-20 02:48:34 +0000 | [diff] [blame] | 3239 | void ImplicitParamDecl::anchor() { } |
| 3240 | |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 3241 | ImplicitParamDecl *ImplicitParamDecl::Create(ASTContext &C, DeclContext *DC, |
Abramo Bagnara | ff676cb | 2011-03-08 08:55:46 +0000 | [diff] [blame] | 3242 | SourceLocation IdLoc, |
| 3243 | IdentifierInfo *Id, |
| 3244 | QualType Type) { |
| 3245 | return new (C) ImplicitParamDecl(DC, IdLoc, Id, Type); |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 3246 | } |
| 3247 | |
Douglas Gregor | 1e68ecc | 2012-01-05 21:55:30 +0000 | [diff] [blame] | 3248 | ImplicitParamDecl *ImplicitParamDecl::CreateDeserialized(ASTContext &C, |
| 3249 | unsigned ID) { |
| 3250 | void *Mem = AllocateDeserializedDecl(C, ID, sizeof(ImplicitParamDecl)); |
| 3251 | return new (Mem) ImplicitParamDecl(0, SourceLocation(), 0, QualType()); |
| 3252 | } |
| 3253 | |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 3254 | FunctionDecl *FunctionDecl::Create(ASTContext &C, DeclContext *DC, |
Abramo Bagnara | ff676cb | 2011-03-08 08:55:46 +0000 | [diff] [blame] | 3255 | SourceLocation StartLoc, |
Abramo Bagnara | 2577743 | 2010-08-11 22:01:17 +0000 | [diff] [blame] | 3256 | const DeclarationNameInfo &NameInfo, |
| 3257 | QualType T, TypeSourceInfo *TInfo, |
Rafael Espindola | d2615cc | 2013-04-03 19:27:57 +0000 | [diff] [blame] | 3258 | StorageClass SC, |
Douglas Gregor | 8f15094 | 2010-12-09 16:59:22 +0000 | [diff] [blame] | 3259 | bool isInlineSpecified, |
Richard Smith | af1fc7a | 2011-08-15 21:04:07 +0000 | [diff] [blame] | 3260 | bool hasWrittenPrototype, |
| 3261 | bool isConstexprSpecified) { |
Abramo Bagnara | ff676cb | 2011-03-08 08:55:46 +0000 | [diff] [blame] | 3262 | FunctionDecl *New = new (C) FunctionDecl(Function, DC, StartLoc, NameInfo, |
Rafael Espindola | d2615cc | 2013-04-03 19:27:57 +0000 | [diff] [blame] | 3263 | T, TInfo, SC, |
Richard Smith | af1fc7a | 2011-08-15 21:04:07 +0000 | [diff] [blame] | 3264 | isInlineSpecified, |
| 3265 | isConstexprSpecified); |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 3266 | New->HasWrittenPrototype = hasWrittenPrototype; |
| 3267 | return New; |
| 3268 | } |
| 3269 | |
Douglas Gregor | 1e68ecc | 2012-01-05 21:55:30 +0000 | [diff] [blame] | 3270 | FunctionDecl *FunctionDecl::CreateDeserialized(ASTContext &C, unsigned ID) { |
| 3271 | void *Mem = AllocateDeserializedDecl(C, ID, sizeof(FunctionDecl)); |
| 3272 | return new (Mem) FunctionDecl(Function, 0, SourceLocation(), |
| 3273 | DeclarationNameInfo(), QualType(), 0, |
Rafael Espindola | d2615cc | 2013-04-03 19:27:57 +0000 | [diff] [blame] | 3274 | SC_None, false, false); |
Douglas Gregor | 1e68ecc | 2012-01-05 21:55:30 +0000 | [diff] [blame] | 3275 | } |
| 3276 | |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 3277 | BlockDecl *BlockDecl::Create(ASTContext &C, DeclContext *DC, SourceLocation L) { |
| 3278 | return new (C) BlockDecl(DC, L); |
| 3279 | } |
| 3280 | |
Douglas Gregor | 1e68ecc | 2012-01-05 21:55:30 +0000 | [diff] [blame] | 3281 | BlockDecl *BlockDecl::CreateDeserialized(ASTContext &C, unsigned ID) { |
| 3282 | void *Mem = AllocateDeserializedDecl(C, ID, sizeof(BlockDecl)); |
| 3283 | return new (Mem) BlockDecl(0, SourceLocation()); |
| 3284 | } |
| 3285 | |
John McCall | 76da55d | 2013-04-16 07:28:30 +0000 | [diff] [blame] | 3286 | MSPropertyDecl *MSPropertyDecl::CreateDeserialized(ASTContext &C, |
| 3287 | unsigned ID) { |
| 3288 | void *Mem = AllocateDeserializedDecl(C, ID, sizeof(MSPropertyDecl)); |
| 3289 | return new (Mem) MSPropertyDecl(0, SourceLocation(), DeclarationName(), |
| 3290 | QualType(), 0, SourceLocation(), |
| 3291 | 0, 0); |
| 3292 | } |
| 3293 | |
Ben Langmuir | 8c045ac | 2013-05-03 19:00:33 +0000 | [diff] [blame] | 3294 | CapturedDecl *CapturedDecl::Create(ASTContext &C, DeclContext *DC, |
| 3295 | unsigned NumParams) { |
Ben Langmuir | dc5be4f | 2013-05-03 19:20:19 +0000 | [diff] [blame] | 3296 | unsigned Size = sizeof(CapturedDecl) + NumParams * sizeof(ImplicitParamDecl*); |
Ben Langmuir | 8c045ac | 2013-05-03 19:00:33 +0000 | [diff] [blame] | 3297 | return new (C.Allocate(Size)) CapturedDecl(DC, NumParams); |
Tareq A. Siraj | 6afcf88 | 2013-04-16 19:37:38 +0000 | [diff] [blame] | 3298 | } |
| 3299 | |
Ben Langmuir | dc5be4f | 2013-05-03 19:20:19 +0000 | [diff] [blame] | 3300 | CapturedDecl *CapturedDecl::CreateDeserialized(ASTContext &C, unsigned ID, |
| 3301 | unsigned NumParams) { |
| 3302 | unsigned Size = sizeof(CapturedDecl) + NumParams * sizeof(ImplicitParamDecl*); |
| 3303 | void *Mem = AllocateDeserializedDecl(C, ID, Size); |
| 3304 | return new (Mem) CapturedDecl(0, NumParams); |
| 3305 | } |
| 3306 | |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 3307 | EnumConstantDecl *EnumConstantDecl::Create(ASTContext &C, EnumDecl *CD, |
| 3308 | SourceLocation L, |
| 3309 | IdentifierInfo *Id, QualType T, |
| 3310 | Expr *E, const llvm::APSInt &V) { |
| 3311 | return new (C) EnumConstantDecl(CD, L, Id, T, E, V); |
| 3312 | } |
| 3313 | |
Douglas Gregor | 1e68ecc | 2012-01-05 21:55:30 +0000 | [diff] [blame] | 3314 | EnumConstantDecl * |
| 3315 | EnumConstantDecl::CreateDeserialized(ASTContext &C, unsigned ID) { |
| 3316 | void *Mem = AllocateDeserializedDecl(C, ID, sizeof(EnumConstantDecl)); |
| 3317 | return new (Mem) EnumConstantDecl(0, SourceLocation(), 0, QualType(), 0, |
| 3318 | llvm::APSInt()); |
| 3319 | } |
| 3320 | |
David Blaikie | 99ba9e3 | 2011-12-20 02:48:34 +0000 | [diff] [blame] | 3321 | void IndirectFieldDecl::anchor() { } |
| 3322 | |
Benjamin Kramer | d981146 | 2010-11-21 14:11:41 +0000 | [diff] [blame] | 3323 | IndirectFieldDecl * |
| 3324 | IndirectFieldDecl::Create(ASTContext &C, DeclContext *DC, SourceLocation L, |
| 3325 | IdentifierInfo *Id, QualType T, NamedDecl **CH, |
| 3326 | unsigned CHS) { |
Francois Pichet | 87c2e12 | 2010-11-21 06:08:52 +0000 | [diff] [blame] | 3327 | return new (C) IndirectFieldDecl(DC, L, Id, T, CH, CHS); |
| 3328 | } |
| 3329 | |
Douglas Gregor | 1e68ecc | 2012-01-05 21:55:30 +0000 | [diff] [blame] | 3330 | IndirectFieldDecl *IndirectFieldDecl::CreateDeserialized(ASTContext &C, |
| 3331 | unsigned ID) { |
| 3332 | void *Mem = AllocateDeserializedDecl(C, ID, sizeof(IndirectFieldDecl)); |
| 3333 | return new (Mem) IndirectFieldDecl(0, SourceLocation(), DeclarationName(), |
| 3334 | QualType(), 0, 0); |
| 3335 | } |
| 3336 | |
Douglas Gregor | 8e7139c | 2010-09-01 20:41:53 +0000 | [diff] [blame] | 3337 | SourceRange EnumConstantDecl::getSourceRange() const { |
| 3338 | SourceLocation End = getLocation(); |
| 3339 | if (Init) |
| 3340 | End = Init->getLocEnd(); |
| 3341 | return SourceRange(getLocation(), End); |
| 3342 | } |
| 3343 | |
David Blaikie | 99ba9e3 | 2011-12-20 02:48:34 +0000 | [diff] [blame] | 3344 | void TypeDecl::anchor() { } |
| 3345 | |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 3346 | TypedefDecl *TypedefDecl::Create(ASTContext &C, DeclContext *DC, |
Abramo Bagnara | 344577e | 2011-03-06 15:48:19 +0000 | [diff] [blame] | 3347 | SourceLocation StartLoc, SourceLocation IdLoc, |
| 3348 | IdentifierInfo *Id, TypeSourceInfo *TInfo) { |
| 3349 | return new (C) TypedefDecl(DC, StartLoc, IdLoc, Id, TInfo); |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 3350 | } |
| 3351 | |
David Blaikie | 99ba9e3 | 2011-12-20 02:48:34 +0000 | [diff] [blame] | 3352 | void TypedefNameDecl::anchor() { } |
| 3353 | |
Douglas Gregor | 1e68ecc | 2012-01-05 21:55:30 +0000 | [diff] [blame] | 3354 | TypedefDecl *TypedefDecl::CreateDeserialized(ASTContext &C, unsigned ID) { |
| 3355 | void *Mem = AllocateDeserializedDecl(C, ID, sizeof(TypedefDecl)); |
| 3356 | return new (Mem) TypedefDecl(0, SourceLocation(), SourceLocation(), 0, 0); |
| 3357 | } |
| 3358 | |
Richard Smith | 162e1c1 | 2011-04-15 14:24:37 +0000 | [diff] [blame] | 3359 | TypeAliasDecl *TypeAliasDecl::Create(ASTContext &C, DeclContext *DC, |
| 3360 | SourceLocation StartLoc, |
| 3361 | SourceLocation IdLoc, IdentifierInfo *Id, |
| 3362 | TypeSourceInfo *TInfo) { |
| 3363 | return new (C) TypeAliasDecl(DC, StartLoc, IdLoc, Id, TInfo); |
| 3364 | } |
| 3365 | |
Douglas Gregor | 1e68ecc | 2012-01-05 21:55:30 +0000 | [diff] [blame] | 3366 | TypeAliasDecl *TypeAliasDecl::CreateDeserialized(ASTContext &C, unsigned ID) { |
| 3367 | void *Mem = AllocateDeserializedDecl(C, ID, sizeof(TypeAliasDecl)); |
| 3368 | return new (Mem) TypeAliasDecl(0, SourceLocation(), SourceLocation(), 0, 0); |
| 3369 | } |
| 3370 | |
Abramo Bagnara | a2026c9 | 2011-03-08 16:41:52 +0000 | [diff] [blame] | 3371 | SourceRange TypedefDecl::getSourceRange() const { |
| 3372 | SourceLocation RangeEnd = getLocation(); |
| 3373 | if (TypeSourceInfo *TInfo = getTypeSourceInfo()) { |
| 3374 | if (typeIsPostfix(TInfo->getType())) |
| 3375 | RangeEnd = TInfo->getTypeLoc().getSourceRange().getEnd(); |
| 3376 | } |
| 3377 | return SourceRange(getLocStart(), RangeEnd); |
| 3378 | } |
| 3379 | |
Richard Smith | 162e1c1 | 2011-04-15 14:24:37 +0000 | [diff] [blame] | 3380 | SourceRange TypeAliasDecl::getSourceRange() const { |
| 3381 | SourceLocation RangeEnd = getLocStart(); |
| 3382 | if (TypeSourceInfo *TInfo = getTypeSourceInfo()) |
| 3383 | RangeEnd = TInfo->getTypeLoc().getSourceRange().getEnd(); |
| 3384 | return SourceRange(getLocStart(), RangeEnd); |
| 3385 | } |
| 3386 | |
David Blaikie | 99ba9e3 | 2011-12-20 02:48:34 +0000 | [diff] [blame] | 3387 | void FileScopeAsmDecl::anchor() { } |
| 3388 | |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 3389 | FileScopeAsmDecl *FileScopeAsmDecl::Create(ASTContext &C, DeclContext *DC, |
Abramo Bagnara | 21e006e | 2011-03-03 14:20:18 +0000 | [diff] [blame] | 3390 | StringLiteral *Str, |
| 3391 | SourceLocation AsmLoc, |
| 3392 | SourceLocation RParenLoc) { |
| 3393 | return new (C) FileScopeAsmDecl(DC, Str, AsmLoc, RParenLoc); |
Sebastian Redl | 7783bfc | 2010-01-26 22:01:41 +0000 | [diff] [blame] | 3394 | } |
Douglas Gregor | 15de72c | 2011-12-02 23:23:56 +0000 | [diff] [blame] | 3395 | |
Douglas Gregor | 1e68ecc | 2012-01-05 21:55:30 +0000 | [diff] [blame] | 3396 | FileScopeAsmDecl *FileScopeAsmDecl::CreateDeserialized(ASTContext &C, |
| 3397 | unsigned ID) { |
| 3398 | void *Mem = AllocateDeserializedDecl(C, ID, sizeof(FileScopeAsmDecl)); |
| 3399 | return new (Mem) FileScopeAsmDecl(0, 0, SourceLocation(), SourceLocation()); |
| 3400 | } |
| 3401 | |
Michael Han | 684aa73 | 2013-02-22 17:15:32 +0000 | [diff] [blame] | 3402 | void EmptyDecl::anchor() {} |
| 3403 | |
| 3404 | EmptyDecl *EmptyDecl::Create(ASTContext &C, DeclContext *DC, SourceLocation L) { |
| 3405 | return new (C) EmptyDecl(DC, L); |
| 3406 | } |
| 3407 | |
| 3408 | EmptyDecl *EmptyDecl::CreateDeserialized(ASTContext &C, unsigned ID) { |
| 3409 | void *Mem = AllocateDeserializedDecl(C, ID, sizeof(EmptyDecl)); |
| 3410 | return new (Mem) EmptyDecl(0, SourceLocation()); |
| 3411 | } |
| 3412 | |
Douglas Gregor | 15de72c | 2011-12-02 23:23:56 +0000 | [diff] [blame] | 3413 | //===----------------------------------------------------------------------===// |
| 3414 | // ImportDecl Implementation |
| 3415 | //===----------------------------------------------------------------------===// |
| 3416 | |
| 3417 | /// \brief Retrieve the number of module identifiers needed to name the given |
| 3418 | /// module. |
| 3419 | static unsigned getNumModuleIdentifiers(Module *Mod) { |
| 3420 | unsigned Result = 1; |
| 3421 | while (Mod->Parent) { |
| 3422 | Mod = Mod->Parent; |
| 3423 | ++Result; |
| 3424 | } |
| 3425 | return Result; |
| 3426 | } |
| 3427 | |
Douglas Gregor | 5948ae1 | 2012-01-03 18:04:46 +0000 | [diff] [blame] | 3428 | ImportDecl::ImportDecl(DeclContext *DC, SourceLocation StartLoc, |
Douglas Gregor | 15de72c | 2011-12-02 23:23:56 +0000 | [diff] [blame] | 3429 | Module *Imported, |
| 3430 | ArrayRef<SourceLocation> IdentifierLocs) |
Douglas Gregor | 5948ae1 | 2012-01-03 18:04:46 +0000 | [diff] [blame] | 3431 | : Decl(Import, DC, StartLoc), ImportedAndComplete(Imported, true), |
Douglas Gregor | e664977 | 2011-12-03 00:30:27 +0000 | [diff] [blame] | 3432 | NextLocalImport() |
Douglas Gregor | 15de72c | 2011-12-02 23:23:56 +0000 | [diff] [blame] | 3433 | { |
| 3434 | assert(getNumModuleIdentifiers(Imported) == IdentifierLocs.size()); |
| 3435 | SourceLocation *StoredLocs = reinterpret_cast<SourceLocation *>(this + 1); |
| 3436 | memcpy(StoredLocs, IdentifierLocs.data(), |
| 3437 | IdentifierLocs.size() * sizeof(SourceLocation)); |
| 3438 | } |
| 3439 | |
Douglas Gregor | 5948ae1 | 2012-01-03 18:04:46 +0000 | [diff] [blame] | 3440 | ImportDecl::ImportDecl(DeclContext *DC, SourceLocation StartLoc, |
Douglas Gregor | 15de72c | 2011-12-02 23:23:56 +0000 | [diff] [blame] | 3441 | Module *Imported, SourceLocation EndLoc) |
Douglas Gregor | 5948ae1 | 2012-01-03 18:04:46 +0000 | [diff] [blame] | 3442 | : Decl(Import, DC, StartLoc), ImportedAndComplete(Imported, false), |
Douglas Gregor | e664977 | 2011-12-03 00:30:27 +0000 | [diff] [blame] | 3443 | NextLocalImport() |
Douglas Gregor | 15de72c | 2011-12-02 23:23:56 +0000 | [diff] [blame] | 3444 | { |
| 3445 | *reinterpret_cast<SourceLocation *>(this + 1) = EndLoc; |
| 3446 | } |
| 3447 | |
| 3448 | ImportDecl *ImportDecl::Create(ASTContext &C, DeclContext *DC, |
Douglas Gregor | 5948ae1 | 2012-01-03 18:04:46 +0000 | [diff] [blame] | 3449 | SourceLocation StartLoc, Module *Imported, |
Douglas Gregor | 15de72c | 2011-12-02 23:23:56 +0000 | [diff] [blame] | 3450 | ArrayRef<SourceLocation> IdentifierLocs) { |
| 3451 | void *Mem = C.Allocate(sizeof(ImportDecl) + |
| 3452 | IdentifierLocs.size() * sizeof(SourceLocation)); |
Douglas Gregor | 5948ae1 | 2012-01-03 18:04:46 +0000 | [diff] [blame] | 3453 | return new (Mem) ImportDecl(DC, StartLoc, Imported, IdentifierLocs); |
Douglas Gregor | 15de72c | 2011-12-02 23:23:56 +0000 | [diff] [blame] | 3454 | } |
| 3455 | |
| 3456 | ImportDecl *ImportDecl::CreateImplicit(ASTContext &C, DeclContext *DC, |
Douglas Gregor | 5948ae1 | 2012-01-03 18:04:46 +0000 | [diff] [blame] | 3457 | SourceLocation StartLoc, |
Douglas Gregor | 15de72c | 2011-12-02 23:23:56 +0000 | [diff] [blame] | 3458 | Module *Imported, |
| 3459 | SourceLocation EndLoc) { |
| 3460 | void *Mem = C.Allocate(sizeof(ImportDecl) + sizeof(SourceLocation)); |
Douglas Gregor | 5948ae1 | 2012-01-03 18:04:46 +0000 | [diff] [blame] | 3461 | ImportDecl *Import = new (Mem) ImportDecl(DC, StartLoc, Imported, EndLoc); |
Douglas Gregor | 15de72c | 2011-12-02 23:23:56 +0000 | [diff] [blame] | 3462 | Import->setImplicit(); |
| 3463 | return Import; |
| 3464 | } |
| 3465 | |
Douglas Gregor | 1e68ecc | 2012-01-05 21:55:30 +0000 | [diff] [blame] | 3466 | ImportDecl *ImportDecl::CreateDeserialized(ASTContext &C, unsigned ID, |
| 3467 | unsigned NumLocations) { |
| 3468 | void *Mem = AllocateDeserializedDecl(C, ID, |
| 3469 | (sizeof(ImportDecl) + |
| 3470 | NumLocations * sizeof(SourceLocation))); |
Douglas Gregor | 15de72c | 2011-12-02 23:23:56 +0000 | [diff] [blame] | 3471 | return new (Mem) ImportDecl(EmptyShell()); |
| 3472 | } |
| 3473 | |
| 3474 | ArrayRef<SourceLocation> ImportDecl::getIdentifierLocs() const { |
| 3475 | if (!ImportedAndComplete.getInt()) |
Dmitri Gribenko | 5543169 | 2013-05-05 00:41:58 +0000 | [diff] [blame] | 3476 | return None; |
Douglas Gregor | 15de72c | 2011-12-02 23:23:56 +0000 | [diff] [blame] | 3477 | |
| 3478 | const SourceLocation *StoredLocs |
| 3479 | = reinterpret_cast<const SourceLocation *>(this + 1); |
| 3480 | return ArrayRef<SourceLocation>(StoredLocs, |
| 3481 | getNumModuleIdentifiers(getImportedModule())); |
| 3482 | } |
| 3483 | |
| 3484 | SourceRange ImportDecl::getSourceRange() const { |
| 3485 | if (!ImportedAndComplete.getInt()) |
| 3486 | return SourceRange(getLocation(), |
| 3487 | *reinterpret_cast<const SourceLocation *>(this + 1)); |
| 3488 | |
| 3489 | return SourceRange(getLocation(), getIdentifierLocs().back()); |
| 3490 | } |