Douglas Gregor | e4e5b05 | 2009-03-19 00:18:19 +0000 | [diff] [blame] | 1 | //===--- NestedNameSpecifier.cpp - C++ nested name specifiers -----*- C++ -*-=// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | // |
| 10 | // This file defines the NestedNameSpecifier class, which represents |
| 11 | // a C++ nested-name-specifier. |
| 12 | // |
| 13 | //===----------------------------------------------------------------------===// |
| 14 | #include "clang/AST/NestedNameSpecifier.h" |
| 15 | #include "clang/AST/ASTContext.h" |
| 16 | #include "clang/AST/Decl.h" |
Douglas Gregor | 14aba76 | 2011-02-24 02:36:08 +0000 | [diff] [blame] | 17 | #include "clang/AST/DeclCXX.h" |
Douglas Gregor | d249e1d1f | 2009-05-29 20:38:28 +0000 | [diff] [blame] | 18 | #include "clang/AST/PrettyPrinter.h" |
Douglas Gregor | e4e5b05 | 2009-03-19 00:18:19 +0000 | [diff] [blame] | 19 | #include "clang/AST/Type.h" |
Douglas Gregor | c34348a | 2011-02-24 17:54:50 +0000 | [diff] [blame] | 20 | #include "clang/AST/TypeLoc.h" |
Douglas Gregor | bad3518 | 2009-03-19 03:51:16 +0000 | [diff] [blame] | 21 | #include "llvm/Support/raw_ostream.h" |
Douglas Gregor | ab452ba | 2009-03-26 23:50:42 +0000 | [diff] [blame] | 22 | #include <cassert> |
Douglas Gregor | bad3518 | 2009-03-19 03:51:16 +0000 | [diff] [blame] | 23 | |
Douglas Gregor | e4e5b05 | 2009-03-19 00:18:19 +0000 | [diff] [blame] | 24 | using namespace clang; |
| 25 | |
Douglas Gregor | ab452ba | 2009-03-26 23:50:42 +0000 | [diff] [blame] | 26 | NestedNameSpecifier * |
Jay Foad | 4ba2a17 | 2011-01-12 09:06:06 +0000 | [diff] [blame] | 27 | NestedNameSpecifier::FindOrInsert(const ASTContext &Context, |
Douglas Gregor | ab452ba | 2009-03-26 23:50:42 +0000 | [diff] [blame] | 28 | const NestedNameSpecifier &Mockup) { |
| 29 | llvm::FoldingSetNodeID ID; |
| 30 | Mockup.Profile(ID); |
Douglas Gregor | e4e5b05 | 2009-03-19 00:18:19 +0000 | [diff] [blame] | 31 | |
Douglas Gregor | ab452ba | 2009-03-26 23:50:42 +0000 | [diff] [blame] | 32 | void *InsertPos = 0; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 33 | NestedNameSpecifier *NNS |
Douglas Gregor | ab452ba | 2009-03-26 23:50:42 +0000 | [diff] [blame] | 34 | = Context.NestedNameSpecifiers.FindNodeOrInsertPos(ID, InsertPos); |
| 35 | if (!NNS) { |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 36 | NNS = new (Context, 4) NestedNameSpecifier(Mockup); |
Douglas Gregor | ab452ba | 2009-03-26 23:50:42 +0000 | [diff] [blame] | 37 | Context.NestedNameSpecifiers.InsertNode(NNS, InsertPos); |
| 38 | } |
Douglas Gregor | e4e5b05 | 2009-03-19 00:18:19 +0000 | [diff] [blame] | 39 | |
Douglas Gregor | ab452ba | 2009-03-26 23:50:42 +0000 | [diff] [blame] | 40 | return NNS; |
Douglas Gregor | e4e5b05 | 2009-03-19 00:18:19 +0000 | [diff] [blame] | 41 | } |
Douglas Gregor | bad3518 | 2009-03-19 03:51:16 +0000 | [diff] [blame] | 42 | |
Douglas Gregor | ab452ba | 2009-03-26 23:50:42 +0000 | [diff] [blame] | 43 | NestedNameSpecifier * |
Jay Foad | 4ba2a17 | 2011-01-12 09:06:06 +0000 | [diff] [blame] | 44 | NestedNameSpecifier::Create(const ASTContext &Context, |
| 45 | NestedNameSpecifier *Prefix, IdentifierInfo *II) { |
Douglas Gregor | ab452ba | 2009-03-26 23:50:42 +0000 | [diff] [blame] | 46 | assert(II && "Identifier cannot be NULL"); |
Douglas Gregor | 3b6afbb | 2009-09-09 00:23:06 +0000 | [diff] [blame] | 47 | assert((!Prefix || Prefix->isDependent()) && "Prefix must be dependent"); |
Douglas Gregor | bad3518 | 2009-03-19 03:51:16 +0000 | [diff] [blame] | 48 | |
Douglas Gregor | ab452ba | 2009-03-26 23:50:42 +0000 | [diff] [blame] | 49 | NestedNameSpecifier Mockup; |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 50 | Mockup.Prefix.setPointer(Prefix); |
Douglas Gregor | 14aba76 | 2011-02-24 02:36:08 +0000 | [diff] [blame] | 51 | Mockup.Prefix.setInt(StoredIdentifier); |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 52 | Mockup.Specifier = II; |
Douglas Gregor | ab452ba | 2009-03-26 23:50:42 +0000 | [diff] [blame] | 53 | return FindOrInsert(Context, Mockup); |
| 54 | } |
Douglas Gregor | bad3518 | 2009-03-19 03:51:16 +0000 | [diff] [blame] | 55 | |
Douglas Gregor | ab452ba | 2009-03-26 23:50:42 +0000 | [diff] [blame] | 56 | NestedNameSpecifier * |
Jay Foad | 4ba2a17 | 2011-01-12 09:06:06 +0000 | [diff] [blame] | 57 | NestedNameSpecifier::Create(const ASTContext &Context, |
| 58 | NestedNameSpecifier *Prefix, NamespaceDecl *NS) { |
Douglas Gregor | ab452ba | 2009-03-26 23:50:42 +0000 | [diff] [blame] | 59 | assert(NS && "Namespace cannot be NULL"); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 60 | assert((!Prefix || |
Douglas Gregor | ab452ba | 2009-03-26 23:50:42 +0000 | [diff] [blame] | 61 | (Prefix->getAsType() == 0 && Prefix->getAsIdentifier() == 0)) && |
| 62 | "Broken nested name specifier"); |
| 63 | NestedNameSpecifier Mockup; |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 64 | Mockup.Prefix.setPointer(Prefix); |
Douglas Gregor | 14aba76 | 2011-02-24 02:36:08 +0000 | [diff] [blame] | 65 | Mockup.Prefix.setInt(StoredNamespaceOrAlias); |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 66 | Mockup.Specifier = NS; |
Douglas Gregor | ab452ba | 2009-03-26 23:50:42 +0000 | [diff] [blame] | 67 | return FindOrInsert(Context, Mockup); |
| 68 | } |
| 69 | |
| 70 | NestedNameSpecifier * |
Jay Foad | 4ba2a17 | 2011-01-12 09:06:06 +0000 | [diff] [blame] | 71 | NestedNameSpecifier::Create(const ASTContext &Context, |
Douglas Gregor | 14aba76 | 2011-02-24 02:36:08 +0000 | [diff] [blame] | 72 | NestedNameSpecifier *Prefix, |
| 73 | NamespaceAliasDecl *Alias) { |
| 74 | assert(Alias && "Namespace alias cannot be NULL"); |
| 75 | assert((!Prefix || |
| 76 | (Prefix->getAsType() == 0 && Prefix->getAsIdentifier() == 0)) && |
| 77 | "Broken nested name specifier"); |
| 78 | NestedNameSpecifier Mockup; |
| 79 | Mockup.Prefix.setPointer(Prefix); |
| 80 | Mockup.Prefix.setInt(StoredNamespaceOrAlias); |
| 81 | Mockup.Specifier = Alias; |
| 82 | return FindOrInsert(Context, Mockup); |
| 83 | } |
| 84 | |
| 85 | NestedNameSpecifier * |
| 86 | NestedNameSpecifier::Create(const ASTContext &Context, |
Jay Foad | 4ba2a17 | 2011-01-12 09:06:06 +0000 | [diff] [blame] | 87 | NestedNameSpecifier *Prefix, |
John McCall | f4c7371 | 2011-01-19 06:33:43 +0000 | [diff] [blame] | 88 | bool Template, const Type *T) { |
Douglas Gregor | ab452ba | 2009-03-26 23:50:42 +0000 | [diff] [blame] | 89 | assert(T && "Type cannot be NULL"); |
| 90 | NestedNameSpecifier Mockup; |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 91 | Mockup.Prefix.setPointer(Prefix); |
Douglas Gregor | 14aba76 | 2011-02-24 02:36:08 +0000 | [diff] [blame] | 92 | Mockup.Prefix.setInt(Template? StoredTypeSpecWithTemplate : StoredTypeSpec); |
John McCall | f4c7371 | 2011-01-19 06:33:43 +0000 | [diff] [blame] | 93 | Mockup.Specifier = const_cast<Type*>(T); |
Douglas Gregor | ab452ba | 2009-03-26 23:50:42 +0000 | [diff] [blame] | 94 | return FindOrInsert(Context, Mockup); |
| 95 | } |
Douglas Gregor | 2700dcd | 2009-09-02 23:58:38 +0000 | [diff] [blame] | 96 | |
| 97 | NestedNameSpecifier * |
Jay Foad | 4ba2a17 | 2011-01-12 09:06:06 +0000 | [diff] [blame] | 98 | NestedNameSpecifier::Create(const ASTContext &Context, IdentifierInfo *II) { |
Douglas Gregor | 2700dcd | 2009-09-02 23:58:38 +0000 | [diff] [blame] | 99 | assert(II && "Identifier cannot be NULL"); |
| 100 | NestedNameSpecifier Mockup; |
| 101 | Mockup.Prefix.setPointer(0); |
Douglas Gregor | 14aba76 | 2011-02-24 02:36:08 +0000 | [diff] [blame] | 102 | Mockup.Prefix.setInt(StoredIdentifier); |
Douglas Gregor | 2700dcd | 2009-09-02 23:58:38 +0000 | [diff] [blame] | 103 | Mockup.Specifier = II; |
| 104 | return FindOrInsert(Context, Mockup); |
| 105 | } |
| 106 | |
Jay Foad | 4ba2a17 | 2011-01-12 09:06:06 +0000 | [diff] [blame] | 107 | NestedNameSpecifier * |
| 108 | NestedNameSpecifier::GlobalSpecifier(const ASTContext &Context) { |
Douglas Gregor | ab452ba | 2009-03-26 23:50:42 +0000 | [diff] [blame] | 109 | if (!Context.GlobalNestedNameSpecifier) |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 110 | Context.GlobalNestedNameSpecifier = new (Context, 4) NestedNameSpecifier(); |
Douglas Gregor | ab452ba | 2009-03-26 23:50:42 +0000 | [diff] [blame] | 111 | return Context.GlobalNestedNameSpecifier; |
| 112 | } |
| 113 | |
Douglas Gregor | 14aba76 | 2011-02-24 02:36:08 +0000 | [diff] [blame] | 114 | NestedNameSpecifier::SpecifierKind NestedNameSpecifier::getKind() const { |
| 115 | if (Specifier == 0) |
| 116 | return Global; |
| 117 | |
| 118 | switch (Prefix.getInt()) { |
| 119 | case StoredIdentifier: |
| 120 | return Identifier; |
| 121 | |
| 122 | case StoredNamespaceOrAlias: |
| 123 | return isa<NamespaceDecl>(static_cast<NamedDecl *>(Specifier))? Namespace |
| 124 | : NamespaceAlias; |
| 125 | |
| 126 | case StoredTypeSpec: |
| 127 | return TypeSpec; |
| 128 | |
| 129 | case StoredTypeSpecWithTemplate: |
| 130 | return TypeSpecWithTemplate; |
| 131 | } |
| 132 | |
| 133 | return Global; |
| 134 | } |
| 135 | |
| 136 | /// \brief Retrieve the namespace stored in this nested name |
| 137 | /// specifier. |
| 138 | NamespaceDecl *NestedNameSpecifier::getAsNamespace() const { |
| 139 | if (Prefix.getInt() == StoredNamespaceOrAlias) |
| 140 | return dyn_cast<NamespaceDecl>(static_cast<NamedDecl *>(Specifier)); |
| 141 | |
| 142 | return 0; |
| 143 | } |
| 144 | |
| 145 | /// \brief Retrieve the namespace alias stored in this nested name |
| 146 | /// specifier. |
| 147 | NamespaceAliasDecl *NestedNameSpecifier::getAsNamespaceAlias() const { |
| 148 | if (Prefix.getInt() == StoredNamespaceOrAlias) |
| 149 | return dyn_cast<NamespaceAliasDecl>(static_cast<NamedDecl *>(Specifier)); |
| 150 | |
| 151 | return 0; |
| 152 | } |
| 153 | |
| 154 | |
Douglas Gregor | ab452ba | 2009-03-26 23:50:42 +0000 | [diff] [blame] | 155 | /// \brief Whether this nested name specifier refers to a dependent |
| 156 | /// type or not. |
| 157 | bool NestedNameSpecifier::isDependent() const { |
| 158 | switch (getKind()) { |
| 159 | case Identifier: |
| 160 | // Identifier specifiers always represent dependent types |
| 161 | return true; |
| 162 | |
| 163 | case Namespace: |
Douglas Gregor | 14aba76 | 2011-02-24 02:36:08 +0000 | [diff] [blame] | 164 | case NamespaceAlias: |
Douglas Gregor | ab452ba | 2009-03-26 23:50:42 +0000 | [diff] [blame] | 165 | case Global: |
| 166 | return false; |
| 167 | |
| 168 | case TypeSpec: |
| 169 | case TypeSpecWithTemplate: |
| 170 | return getAsType()->isDependentType(); |
Douglas Gregor | bad3518 | 2009-03-19 03:51:16 +0000 | [diff] [blame] | 171 | } |
Douglas Gregor | ab452ba | 2009-03-26 23:50:42 +0000 | [diff] [blame] | 172 | |
| 173 | // Necessary to suppress a GCC warning. |
| 174 | return false; |
| 175 | } |
| 176 | |
Douglas Gregor | d093722 | 2010-12-13 22:49:22 +0000 | [diff] [blame] | 177 | bool NestedNameSpecifier::containsUnexpandedParameterPack() const { |
| 178 | switch (getKind()) { |
| 179 | case Identifier: |
| 180 | return getPrefix() && getPrefix()->containsUnexpandedParameterPack(); |
| 181 | |
| 182 | case Namespace: |
Douglas Gregor | 14aba76 | 2011-02-24 02:36:08 +0000 | [diff] [blame] | 183 | case NamespaceAlias: |
Douglas Gregor | d093722 | 2010-12-13 22:49:22 +0000 | [diff] [blame] | 184 | case Global: |
| 185 | return false; |
| 186 | |
| 187 | case TypeSpec: |
| 188 | case TypeSpecWithTemplate: |
| 189 | return getAsType()->containsUnexpandedParameterPack(); |
| 190 | } |
| 191 | |
| 192 | // Necessary to suppress a GCC warning. |
| 193 | return false; |
| 194 | } |
| 195 | |
Douglas Gregor | ab452ba | 2009-03-26 23:50:42 +0000 | [diff] [blame] | 196 | /// \brief Print this nested name specifier to the given output |
| 197 | /// stream. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 198 | void |
| 199 | NestedNameSpecifier::print(llvm::raw_ostream &OS, |
Douglas Gregor | d249e1d1f | 2009-05-29 20:38:28 +0000 | [diff] [blame] | 200 | const PrintingPolicy &Policy) const { |
Douglas Gregor | 1734317 | 2009-04-01 00:28:59 +0000 | [diff] [blame] | 201 | if (getPrefix()) |
Douglas Gregor | d249e1d1f | 2009-05-29 20:38:28 +0000 | [diff] [blame] | 202 | getPrefix()->print(OS, Policy); |
Douglas Gregor | ab452ba | 2009-03-26 23:50:42 +0000 | [diff] [blame] | 203 | |
| 204 | switch (getKind()) { |
| 205 | case Identifier: |
| 206 | OS << getAsIdentifier()->getName(); |
| 207 | break; |
| 208 | |
| 209 | case Namespace: |
Douglas Gregor | 14aba76 | 2011-02-24 02:36:08 +0000 | [diff] [blame] | 210 | OS << getAsNamespace()->getName(); |
| 211 | break; |
| 212 | |
| 213 | case NamespaceAlias: |
| 214 | OS << getAsNamespaceAlias()->getName(); |
Douglas Gregor | ab452ba | 2009-03-26 23:50:42 +0000 | [diff] [blame] | 215 | break; |
| 216 | |
| 217 | case Global: |
| 218 | break; |
| 219 | |
| 220 | case TypeSpecWithTemplate: |
| 221 | OS << "template "; |
| 222 | // Fall through to print the type. |
| 223 | |
| 224 | case TypeSpec: { |
| 225 | std::string TypeStr; |
John McCall | f4c7371 | 2011-01-19 06:33:43 +0000 | [diff] [blame] | 226 | const Type *T = getAsType(); |
Douglas Gregor | ab452ba | 2009-03-26 23:50:42 +0000 | [diff] [blame] | 227 | |
Douglas Gregor | d249e1d1f | 2009-05-29 20:38:28 +0000 | [diff] [blame] | 228 | PrintingPolicy InnerPolicy(Policy); |
John McCall | 2191b20 | 2009-09-05 06:31:47 +0000 | [diff] [blame] | 229 | InnerPolicy.SuppressScope = true; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 230 | |
Douglas Gregor | dacd434 | 2009-08-26 00:04:55 +0000 | [diff] [blame] | 231 | // Nested-name-specifiers are intended to contain minimally-qualified |
Abramo Bagnara | 465d41b | 2010-05-11 21:36:43 +0000 | [diff] [blame] | 232 | // types. An actual ElaboratedType will not occur, since we'll store |
Douglas Gregor | dacd434 | 2009-08-26 00:04:55 +0000 | [diff] [blame] | 233 | // just the type that is referred to in the nested-name-specifier (e.g., |
| 234 | // a TypedefType, TagType, etc.). However, when we are dealing with |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 235 | // dependent template-id types (e.g., Outer<T>::template Inner<U>), |
Douglas Gregor | dacd434 | 2009-08-26 00:04:55 +0000 | [diff] [blame] | 236 | // the type requires its own nested-name-specifier for uniqueness, so we |
| 237 | // suppress that nested-name-specifier during printing. |
Abramo Bagnara | 465d41b | 2010-05-11 21:36:43 +0000 | [diff] [blame] | 238 | assert(!isa<ElaboratedType>(T) && |
| 239 | "Elaborated type in nested-name-specifier"); |
Douglas Gregor | dacd434 | 2009-08-26 00:04:55 +0000 | [diff] [blame] | 240 | if (const TemplateSpecializationType *SpecType |
| 241 | = dyn_cast<TemplateSpecializationType>(T)) { |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 242 | // Print the template name without its corresponding |
Douglas Gregor | dacd434 | 2009-08-26 00:04:55 +0000 | [diff] [blame] | 243 | // nested-name-specifier. |
| 244 | SpecType->getTemplateName().print(OS, InnerPolicy, true); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 245 | |
Douglas Gregor | dacd434 | 2009-08-26 00:04:55 +0000 | [diff] [blame] | 246 | // Print the template argument list. |
| 247 | TypeStr = TemplateSpecializationType::PrintTemplateArgumentList( |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 248 | SpecType->getArgs(), |
| 249 | SpecType->getNumArgs(), |
Douglas Gregor | dacd434 | 2009-08-26 00:04:55 +0000 | [diff] [blame] | 250 | InnerPolicy); |
| 251 | } else { |
| 252 | // Print the type normally |
Douglas Gregor | fee8a3c | 2009-11-10 00:39:07 +0000 | [diff] [blame] | 253 | TypeStr = QualType(T, 0).getAsString(InnerPolicy); |
Douglas Gregor | dacd434 | 2009-08-26 00:04:55 +0000 | [diff] [blame] | 254 | } |
Douglas Gregor | ab452ba | 2009-03-26 23:50:42 +0000 | [diff] [blame] | 255 | OS << TypeStr; |
| 256 | break; |
| 257 | } |
| 258 | } |
| 259 | |
| 260 | OS << "::"; |
| 261 | } |
| 262 | |
Chris Lattner | e4f2142 | 2009-06-30 01:26:17 +0000 | [diff] [blame] | 263 | void NestedNameSpecifier::dump(const LangOptions &LO) { |
| 264 | print(llvm::errs(), PrintingPolicy(LO)); |
Douglas Gregor | d57959a | 2009-03-27 23:10:48 +0000 | [diff] [blame] | 265 | } |
Douglas Gregor | c34348a | 2011-02-24 17:54:50 +0000 | [diff] [blame] | 266 | |
| 267 | unsigned |
| 268 | NestedNameSpecifierLoc::getLocalDataLength(NestedNameSpecifier *Qualifier) { |
| 269 | assert(Qualifier && "Expected a non-NULL qualifier"); |
| 270 | |
| 271 | // Location of the trailing '::'. |
| 272 | unsigned Length = sizeof(unsigned); |
| 273 | |
| 274 | switch (Qualifier->getKind()) { |
| 275 | case NestedNameSpecifier::Global: |
| 276 | // Nothing more to add. |
| 277 | break; |
| 278 | |
| 279 | case NestedNameSpecifier::Identifier: |
| 280 | case NestedNameSpecifier::Namespace: |
| 281 | case NestedNameSpecifier::NamespaceAlias: |
| 282 | // The location of the identifier or namespace name. |
| 283 | Length += sizeof(unsigned); |
| 284 | break; |
| 285 | |
| 286 | case NestedNameSpecifier::TypeSpecWithTemplate: |
| 287 | case NestedNameSpecifier::TypeSpec: |
| 288 | // The "void*" that points at the TypeLoc data. |
| 289 | // Note: the 'template' keyword is part of the TypeLoc. |
| 290 | Length += sizeof(void *); |
| 291 | break; |
| 292 | } |
| 293 | |
| 294 | return Length; |
| 295 | } |
| 296 | |
| 297 | unsigned |
| 298 | NestedNameSpecifierLoc::getDataLength(NestedNameSpecifier *Qualifier) { |
| 299 | unsigned Length = 0; |
| 300 | for (; Qualifier; Qualifier = Qualifier->getPrefix()) |
| 301 | Length += getLocalDataLength(Qualifier); |
| 302 | return Length; |
| 303 | } |
| 304 | |
| 305 | namespace { |
| 306 | /// \brief Load a (possibly unaligned) source location from a given address |
| 307 | /// and offset. |
| 308 | SourceLocation LoadSourceLocation(void *Data, unsigned Offset) { |
| 309 | unsigned Raw; |
| 310 | memcpy(&Raw, static_cast<char *>(Data) + Offset, sizeof(unsigned)); |
| 311 | return SourceLocation::getFromRawEncoding(Raw); |
| 312 | } |
| 313 | |
| 314 | /// \brief Load a (possibly unaligned) pointer from a given address and |
| 315 | /// offset. |
| 316 | void *LoadPointer(void *Data, unsigned Offset) { |
| 317 | void *Result; |
| 318 | memcpy(&Result, static_cast<char *>(Data) + Offset, sizeof(void*)); |
| 319 | return Result; |
| 320 | } |
| 321 | } |
| 322 | |
Douglas Gregor | dc35571 | 2011-02-25 00:36:19 +0000 | [diff] [blame^] | 323 | SourceRange NestedNameSpecifierLoc::getSourceRange() const { |
Douglas Gregor | c34348a | 2011-02-24 17:54:50 +0000 | [diff] [blame] | 324 | NestedNameSpecifierLoc First = *this; |
| 325 | while (NestedNameSpecifierLoc Prefix= First.getPrefix()) |
| 326 | First = Prefix; |
| 327 | |
| 328 | return SourceRange(First.getLocalSourceRange().getBegin(), |
| 329 | getLocalSourceRange().getEnd()); |
| 330 | } |
| 331 | |
Douglas Gregor | dc35571 | 2011-02-25 00:36:19 +0000 | [diff] [blame^] | 332 | SourceRange NestedNameSpecifierLoc::getLocalSourceRange() const { |
Douglas Gregor | c34348a | 2011-02-24 17:54:50 +0000 | [diff] [blame] | 333 | unsigned Offset = getDataLength(Qualifier->getPrefix()); |
| 334 | switch (Qualifier->getKind()) { |
| 335 | case NestedNameSpecifier::Global: |
| 336 | return LoadSourceLocation(Data, Offset); |
| 337 | |
| 338 | case NestedNameSpecifier::Identifier: |
| 339 | case NestedNameSpecifier::Namespace: |
| 340 | case NestedNameSpecifier::NamespaceAlias: |
| 341 | return SourceRange(LoadSourceLocation(Data, Offset), |
| 342 | LoadSourceLocation(Data, Offset + sizeof(unsigned))); |
| 343 | |
| 344 | case NestedNameSpecifier::TypeSpecWithTemplate: |
| 345 | case NestedNameSpecifier::TypeSpec: { |
| 346 | // The "void*" that points at the TypeLoc data. |
| 347 | // Note: the 'template' keyword is part of the TypeLoc. |
| 348 | void *TypeData = LoadPointer(Data, Offset); |
| 349 | TypeLoc TL(Qualifier->getAsType(), TypeData); |
| 350 | return SourceRange(TL.getBeginLoc(), |
| 351 | LoadSourceLocation(Data, Offset + sizeof(void*))); |
| 352 | } |
| 353 | } |
| 354 | |
| 355 | return SourceRange(); |
| 356 | } |
Douglas Gregor | dc35571 | 2011-02-25 00:36:19 +0000 | [diff] [blame^] | 357 | |
| 358 | TypeLoc NestedNameSpecifierLoc::getTypeLoc() const { |
| 359 | assert((Qualifier->getKind() == NestedNameSpecifier::TypeSpec || |
| 360 | Qualifier->getKind() == NestedNameSpecifier::TypeSpecWithTemplate) && |
| 361 | "Nested-name-specifier location is not a type"); |
| 362 | |
| 363 | // The "void*" that points at the TypeLoc data. |
| 364 | unsigned Offset = getDataLength(Qualifier->getPrefix()); |
| 365 | void *TypeData = LoadPointer(Data, Offset); |
| 366 | return TypeLoc(Qualifier->getAsType(), TypeData); |
| 367 | } |