NestedNameSpecifier.h revision 9dc71d2fddcd283e07d45f3894c8559e2f7dd9a7
1e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor//===--- NestedNameSpecifier.h - C++ nested name specifiers -----*- C++ -*-===// 2e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor// 3e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor// The LLVM Compiler Infrastructure 4e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor// 5e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor// This file is distributed under the University of Illinois Open Source 6e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor// License. See LICENSE.TXT for details. 7e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor// 8e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor//===----------------------------------------------------------------------===// 9e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor// 10e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor// This file defines the NestedNameSpecifier class, which represents 11e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor// a C++ nested-name-specifier. 12e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor// 13e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor//===----------------------------------------------------------------------===// 14e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor#ifndef LLVM_CLANG_AST_NESTEDNAMESPECIFIER_H 15e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor#define LLVM_CLANG_AST_NESTEDNAMESPECIFIER_H 16e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor 17dacd434c49658286c380c7b4c357d76d53cb4aa1Douglas Gregor#include "clang/Basic/Diagnostic.h" 18ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor#include "llvm/ADT/FoldingSet.h" 19ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor#include "llvm/ADT/PointerIntPair.h" 20e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor 21bad351822117eaf280081494e3dbe4a06c0dbfcfDouglas Gregornamespace llvm { 22bad351822117eaf280081494e3dbe4a06c0dbfcfDouglas Gregor class raw_ostream; 23bad351822117eaf280081494e3dbe4a06c0dbfcfDouglas Gregor} 24bad351822117eaf280081494e3dbe4a06c0dbfcfDouglas Gregor 25e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregornamespace clang { 26e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor 27e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregorclass ASTContext; 2814aba76042e041b2c5e439bf4ae353a0a3c7fd73Douglas Gregorclass NamespaceAliasDecl; 29ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregorclass NamespaceDecl; 30ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregorclass IdentifierInfo; 313b4ea54acf01f72f6eb74d96689dda86d950228fDaniel Dunbarstruct PrintingPolicy; 32e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregorclass Type; 33dc355713be51fcb4ee52d9fd6b4548ceff47fadfDouglas Gregorclass TypeLoc; 34e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattnerclass LangOptions; 35e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor 36ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor/// \brief Represents a C++ nested name specifier, such as 37ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor/// "::std::vector<int>::". 38e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor/// 39ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor/// C++ nested name specifiers are the prefixes to qualified 40ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor/// namespaces. For example, "foo::" in "foo::x" is a nested name 41ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor/// specifier. Nested name specifiers are made up of a sequence of 42ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor/// specifiers, each of which can be a namespace, type, identifier 43ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor/// (for dependent names), or the global specifier ('::', must be the 44ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor/// first specifier). 45ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregorclass NestedNameSpecifier : public llvm::FoldingSetNode { 4614aba76042e041b2c5e439bf4ae353a0a3c7fd73Douglas Gregor 4714aba76042e041b2c5e439bf4ae353a0a3c7fd73Douglas Gregor /// \brief Enumeration describing 4814aba76042e041b2c5e439bf4ae353a0a3c7fd73Douglas Gregor enum StoredSpecifierKind { 4914aba76042e041b2c5e439bf4ae353a0a3c7fd73Douglas Gregor StoredIdentifier = 0, 5014aba76042e041b2c5e439bf4ae353a0a3c7fd73Douglas Gregor StoredNamespaceOrAlias = 1, 5114aba76042e041b2c5e439bf4ae353a0a3c7fd73Douglas Gregor StoredTypeSpec = 2, 5214aba76042e041b2c5e439bf4ae353a0a3c7fd73Douglas Gregor StoredTypeSpecWithTemplate = 3 5314aba76042e041b2c5e439bf4ae353a0a3c7fd73Douglas Gregor }; 5414aba76042e041b2c5e439bf4ae353a0a3c7fd73Douglas Gregor 55ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// \brief The nested name specifier that precedes this nested name 56ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// specifier. 571734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor /// 581734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor /// The pointer is the nested-name-specifier that precedes this 591734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor /// one. The integer stores one of the first four values of type 601734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor /// SpecifierKind. 6114aba76042e041b2c5e439bf4ae353a0a3c7fd73Douglas Gregor llvm::PointerIntPair<NestedNameSpecifier *, 2, StoredSpecifierKind> Prefix; 62ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor 63ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// \brief The last component in the nested name specifier, which 64ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// can be an identifier, a declaration, or a type. 65ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// 66ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// When the pointer is NULL, this specifier represents the global 67ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// specifier '::'. Otherwise, the pointer is one of 68ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// IdentifierInfo*, Namespace*, or Type*, depending on the kind of 691734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor /// specifier as encoded within the prefix. 701734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor void* Specifier; 71e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor 72e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregorpublic: 73ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// \brief The kind of specifier that completes this nested name 74ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// specifier. 75ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor enum SpecifierKind { 76ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// \brief An identifier, stored as an IdentifierInfo*. 7714aba76042e041b2c5e439bf4ae353a0a3c7fd73Douglas Gregor Identifier, 7814aba76042e041b2c5e439bf4ae353a0a3c7fd73Douglas Gregor /// \brief A namespace, stored as a NamespaceDecl*. 7914aba76042e041b2c5e439bf4ae353a0a3c7fd73Douglas Gregor Namespace, 8014aba76042e041b2c5e439bf4ae353a0a3c7fd73Douglas Gregor /// \brief A namespace alias, stored as a NamespaceAliasDecl*. 8114aba76042e041b2c5e439bf4ae353a0a3c7fd73Douglas Gregor NamespaceAlias, 82ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// \brief A type, stored as a Type*. 8314aba76042e041b2c5e439bf4ae353a0a3c7fd73Douglas Gregor TypeSpec, 84ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// \brief A type that was preceded by the 'template' keyword, 85ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// stored as a Type*. 8614aba76042e041b2c5e439bf4ae353a0a3c7fd73Douglas Gregor TypeSpecWithTemplate, 87ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// \brief The global specifier '::'. There is no stored value. 8814aba76042e041b2c5e439bf4ae353a0a3c7fd73Douglas Gregor Global 89ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor }; 90ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor 91ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregorprivate: 92ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// \brief Builds the global specifier. 9314aba76042e041b2c5e439bf4ae353a0a3c7fd73Douglas Gregor NestedNameSpecifier() : Prefix(0, StoredIdentifier), Specifier(0) { } 94ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor 95ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// \brief Copy constructor used internally to clone nested name 96ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// specifiers. 971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump NestedNameSpecifier(const NestedNameSpecifier &Other) 981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump : llvm::FoldingSetNode(Other), Prefix(Other.Prefix), 99ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor Specifier(Other.Specifier) { 100e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor } 101e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor 102ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor NestedNameSpecifier &operator=(const NestedNameSpecifier &); // do not implement 103e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor 104ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// \brief Either find or insert the given nested name specifier 105ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// mockup in the given context. 1064ba2a17694148e16eaa8d3917f657ffcd3667be4Jay Foad static NestedNameSpecifier *FindOrInsert(const ASTContext &Context, 1071734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor const NestedNameSpecifier &Mockup); 108e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor 109ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregorpublic: 110ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// \brief Builds a specifier combining a prefix and an identifier. 111e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor /// 112ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// The prefix must be dependent, since nested name specifiers 113ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// referencing an identifier are only permitted when the identifier 114ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// cannot be resolved. 1154ba2a17694148e16eaa8d3917f657ffcd3667be4Jay Foad static NestedNameSpecifier *Create(const ASTContext &Context, 1161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump NestedNameSpecifier *Prefix, 117ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor IdentifierInfo *II); 118ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor 119ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// \brief Builds a nested name specifier that names a namespace. 1204ba2a17694148e16eaa8d3917f657ffcd3667be4Jay Foad static NestedNameSpecifier *Create(const ASTContext &Context, 1211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump NestedNameSpecifier *Prefix, 122ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor NamespaceDecl *NS); 123ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor 12414aba76042e041b2c5e439bf4ae353a0a3c7fd73Douglas Gregor /// \brief Builds a nested name specifier that names a namespace alias. 12514aba76042e041b2c5e439bf4ae353a0a3c7fd73Douglas Gregor static NestedNameSpecifier *Create(const ASTContext &Context, 12614aba76042e041b2c5e439bf4ae353a0a3c7fd73Douglas Gregor NestedNameSpecifier *Prefix, 12714aba76042e041b2c5e439bf4ae353a0a3c7fd73Douglas Gregor NamespaceAliasDecl *Alias); 12814aba76042e041b2c5e439bf4ae353a0a3c7fd73Douglas Gregor 129ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// \brief Builds a nested name specifier that names a type. 1304ba2a17694148e16eaa8d3917f657ffcd3667be4Jay Foad static NestedNameSpecifier *Create(const ASTContext &Context, 1311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump NestedNameSpecifier *Prefix, 132f4c7371fb1d3cebcfb40abad4537bb82515704eaJohn McCall bool Template, const Type *T); 133ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor 1342700dcde044893642b9b77638e052aa90be7cd51Douglas Gregor /// \brief Builds a specifier that consists of just an identifier. 1352700dcde044893642b9b77638e052aa90be7cd51Douglas Gregor /// 1362700dcde044893642b9b77638e052aa90be7cd51Douglas Gregor /// The nested-name-specifier is assumed to be dependent, but has no 1372700dcde044893642b9b77638e052aa90be7cd51Douglas Gregor /// prefix because the prefix is implied by something outside of the 1382700dcde044893642b9b77638e052aa90be7cd51Douglas Gregor /// nested name specifier, e.g., in "x->Base::f", the "x" has a dependent 1392700dcde044893642b9b77638e052aa90be7cd51Douglas Gregor /// type. 1404ba2a17694148e16eaa8d3917f657ffcd3667be4Jay Foad static NestedNameSpecifier *Create(const ASTContext &Context, 1414ba2a17694148e16eaa8d3917f657ffcd3667be4Jay Foad IdentifierInfo *II); 1421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 143ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// \brief Returns the nested name specifier representing the global 144ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// scope. 1454ba2a17694148e16eaa8d3917f657ffcd3667be4Jay Foad static NestedNameSpecifier *GlobalSpecifier(const ASTContext &Context); 146ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor 147ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// \brief Return the prefix of this nested name specifier. 148e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor /// 149ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// The prefix contains all of the parts of the nested name 150ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// specifier that preced this current specifier. For example, for a 151ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// nested name specifier that represents "foo::bar::", the current 152ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// specifier will contain "bar::" and the prefix will contain 153ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// "foo::". 1541734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor NestedNameSpecifier *getPrefix() const { return Prefix.getPointer(); } 155ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor 156ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// \brief Determine what kind of nested name specifier is stored. 15714aba76042e041b2c5e439bf4ae353a0a3c7fd73Douglas Gregor SpecifierKind getKind() const; 158e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor 159ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// \brief Retrieve the identifier stored in this nested name 160ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// specifier. 161ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor IdentifierInfo *getAsIdentifier() const { 16214aba76042e041b2c5e439bf4ae353a0a3c7fd73Douglas Gregor if (Prefix.getInt() == StoredIdentifier) 1631734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor return (IdentifierInfo *)Specifier; 164e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor 165e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor return 0; 166e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor } 1671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 168ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// \brief Retrieve the namespace stored in this nested name 169ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// specifier. 17014aba76042e041b2c5e439bf4ae353a0a3c7fd73Douglas Gregor NamespaceDecl *getAsNamespace() const; 171e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor 17214aba76042e041b2c5e439bf4ae353a0a3c7fd73Douglas Gregor /// \brief Retrieve the namespace alias stored in this nested name 17314aba76042e041b2c5e439bf4ae353a0a3c7fd73Douglas Gregor /// specifier. 17414aba76042e041b2c5e439bf4ae353a0a3c7fd73Douglas Gregor NamespaceAliasDecl *getAsNamespaceAlias() const; 175e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor 176ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// \brief Retrieve the type stored in this nested name specifier. 177f4c7371fb1d3cebcfb40abad4537bb82515704eaJohn McCall const Type *getAsType() const { 17814aba76042e041b2c5e439bf4ae353a0a3c7fd73Douglas Gregor if (Prefix.getInt() == StoredTypeSpec || 17914aba76042e041b2c5e439bf4ae353a0a3c7fd73Douglas Gregor Prefix.getInt() == StoredTypeSpecWithTemplate) 180f4c7371fb1d3cebcfb40abad4537bb82515704eaJohn McCall return (const Type *)Specifier; 181ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor 182ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor return 0; 183ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor } 184ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor 185ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// \brief Whether this nested name specifier refers to a dependent 186ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// type or not. 187ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor bool isDependent() const; 188ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor 189561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor /// \brief Whether this nested name specifier involves a template 190561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor /// parameter. 191561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor bool isInstantiationDependent() const; 192561f81243f665cf2001caadc45df505f826b72d6Douglas Gregor 193d0937224f383c7cc72c947119380f9713a070c73Douglas Gregor /// \brief Whether this nested-name-specifier contains an unexpanded 194d0937224f383c7cc72c947119380f9713a070c73Douglas Gregor /// parameter pack (for C++0x variadic templates). 195d0937224f383c7cc72c947119380f9713a070c73Douglas Gregor bool containsUnexpandedParameterPack() const; 196d0937224f383c7cc72c947119380f9713a070c73Douglas Gregor 197ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// \brief Print this nested name specifier to the given output 198ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor /// stream. 199d249e1d1f1498b81314459ceda19d6ff25c278adDouglas Gregor void print(llvm::raw_ostream &OS, const PrintingPolicy &Policy) const; 200e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor 201ab452ba8323d1985e08bade2bced588cddf2cc28Douglas Gregor void Profile(llvm::FoldingSetNodeID &ID) const { 2021734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor ID.AddPointer(Prefix.getOpaqueValue()); 2031734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor ID.AddPointer(Specifier); 204e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor } 205bad351822117eaf280081494e3dbe4a06c0dbfcfDouglas Gregor 206d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor /// \brief Dump the nested name specifier to standard output to aid 207d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor /// in debugging. 208e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner void dump(const LangOptions &LO); 209e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor}; 210e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor 211c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor/// \brief A C++ nested-name-specifier augmented with source location 212c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor/// information. 213c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregorclass NestedNameSpecifierLoc { 214c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor NestedNameSpecifier *Qualifier; 215c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor void *Data; 216c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor 217c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor /// \brief Determines the data length for the last component in the 218c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor /// given nested-name-specifier. 219c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor static unsigned getLocalDataLength(NestedNameSpecifier *Qualifier); 220c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor 221c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor /// \brief Determines the data length for the entire 222c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor /// nested-name-specifier. 223c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor static unsigned getDataLength(NestedNameSpecifier *Qualifier); 224c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor 225c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregorpublic: 226c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor /// \brief Construct an empty nested-name-specifier. 227c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor NestedNameSpecifierLoc() : Qualifier(0), Data(0) { } 228c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor 229c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor /// \brief Construct a nested-name-specifier with source location information 230c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor /// from 231c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor NestedNameSpecifierLoc(NestedNameSpecifier *Qualifier, void *Data) 232c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor : Qualifier(Qualifier), Data(Data) { } 233c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor 234c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor /// \brief Evalutes true when this nested-name-specifier location is 235c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor /// non-empty. 236c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor operator bool() const { return Qualifier; } 237c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor 238c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor /// \brief Retrieve the nested-name-specifier to which this instance 239c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor /// refers. 240c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor NestedNameSpecifier *getNestedNameSpecifier() const { 241c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor return Qualifier; 242c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor } 243c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor 244c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor /// \brief Retrieve the opaque pointer that refers to source-location data. 245c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor void *getOpaqueData() const { return Data; } 246c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor 247c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor /// \brief Retrieve the source range covering the entirety of this 248c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor /// nested-name-specifier. 249c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor /// 250c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor /// For example, if this instance refers to a nested-name-specifier 251c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor /// \c ::std::vector<int>::, the returned source range would cover 252c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor /// from the initial '::' to the last '::'. 253dc355713be51fcb4ee52d9fd6b4548ceff47fadfDouglas Gregor SourceRange getSourceRange() const; 254c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor 255c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor /// \brief Retrieve the source range covering just the last part of 256c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor /// this nested-name-specifier, not including the prefix. 257c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor /// 258c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor /// For example, if this instance refers to a nested-name-specifier 259c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor /// \c ::std::vector<int>::, the returned source range would cover 260c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor /// from "vector" to the last '::'. 261dc355713be51fcb4ee52d9fd6b4548ceff47fadfDouglas Gregor SourceRange getLocalSourceRange() const; 262dc355713be51fcb4ee52d9fd6b4548ceff47fadfDouglas Gregor 263dc355713be51fcb4ee52d9fd6b4548ceff47fadfDouglas Gregor /// \brief Retrieve the location of the beginning of this 264dc355713be51fcb4ee52d9fd6b4548ceff47fadfDouglas Gregor /// nested-name-specifier. 265dc355713be51fcb4ee52d9fd6b4548ceff47fadfDouglas Gregor SourceLocation getBeginLoc() const { 266dc355713be51fcb4ee52d9fd6b4548ceff47fadfDouglas Gregor return getSourceRange().getBegin(); 267dc355713be51fcb4ee52d9fd6b4548ceff47fadfDouglas Gregor } 268dc355713be51fcb4ee52d9fd6b4548ceff47fadfDouglas Gregor 269dc355713be51fcb4ee52d9fd6b4548ceff47fadfDouglas Gregor /// \brief Retrieve the location of the end of this 270dc355713be51fcb4ee52d9fd6b4548ceff47fadfDouglas Gregor /// nested-name-specifier. 271dc355713be51fcb4ee52d9fd6b4548ceff47fadfDouglas Gregor SourceLocation getEndLoc() const { 272dc355713be51fcb4ee52d9fd6b4548ceff47fadfDouglas Gregor return getSourceRange().getEnd(); 273dc355713be51fcb4ee52d9fd6b4548ceff47fadfDouglas Gregor } 274c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor 275c22b5fff39a7520207f165fb16a27a34b944bd9cDouglas Gregor /// \brief Retrieve the location of the beginning of this 276c22b5fff39a7520207f165fb16a27a34b944bd9cDouglas Gregor /// component of the nested-name-specifier. 277c22b5fff39a7520207f165fb16a27a34b944bd9cDouglas Gregor SourceLocation getLocalBeginLoc() const { 278c22b5fff39a7520207f165fb16a27a34b944bd9cDouglas Gregor return getLocalSourceRange().getBegin(); 279c22b5fff39a7520207f165fb16a27a34b944bd9cDouglas Gregor } 280c22b5fff39a7520207f165fb16a27a34b944bd9cDouglas Gregor 281c22b5fff39a7520207f165fb16a27a34b944bd9cDouglas Gregor /// \brief Retrieve the location of the end of this component of the 282c22b5fff39a7520207f165fb16a27a34b944bd9cDouglas Gregor /// nested-name-specifier. 283c22b5fff39a7520207f165fb16a27a34b944bd9cDouglas Gregor SourceLocation getLocalEndLoc() const { 284c22b5fff39a7520207f165fb16a27a34b944bd9cDouglas Gregor return getLocalSourceRange().getEnd(); 285c22b5fff39a7520207f165fb16a27a34b944bd9cDouglas Gregor } 286c22b5fff39a7520207f165fb16a27a34b944bd9cDouglas Gregor 287c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor /// \brief Return the prefix of this nested-name-specifier. 288c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor /// 289c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor /// For example, if this instance refers to a nested-name-specifier 290c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor /// \c ::std::vector<int>::, the prefix is \c ::std::. Note that the 291c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor /// returned prefix may be empty, if this is the first component of 292c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor /// the nested-name-specifier. 293c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor NestedNameSpecifierLoc getPrefix() const { 294c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor if (!Qualifier) 295c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor return *this; 296c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor 297c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor return NestedNameSpecifierLoc(Qualifier->getPrefix(), Data); 298c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor } 299dc355713be51fcb4ee52d9fd6b4548ceff47fadfDouglas Gregor 300dc355713be51fcb4ee52d9fd6b4548ceff47fadfDouglas Gregor /// \brief For a nested-name-specifier that refers to a type, 301dc355713be51fcb4ee52d9fd6b4548ceff47fadfDouglas Gregor /// retrieve the type with source-location information. 302dc355713be51fcb4ee52d9fd6b4548ceff47fadfDouglas Gregor TypeLoc getTypeLoc() const; 303dc355713be51fcb4ee52d9fd6b4548ceff47fadfDouglas Gregor 304c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor /// \brief Determines the data length for the entire 305c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor /// nested-name-specifier. 306c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor unsigned getDataLength() const { return getDataLength(Qualifier); } 30700cf3cc2718671aa48e8da264a523b0058a8591eDouglas Gregor 30800cf3cc2718671aa48e8da264a523b0058a8591eDouglas Gregor friend bool operator==(NestedNameSpecifierLoc X, 30900cf3cc2718671aa48e8da264a523b0058a8591eDouglas Gregor NestedNameSpecifierLoc Y) { 31000cf3cc2718671aa48e8da264a523b0058a8591eDouglas Gregor return X.Qualifier == Y.Qualifier && X.Data == Y.Data; 31100cf3cc2718671aa48e8da264a523b0058a8591eDouglas Gregor } 31200cf3cc2718671aa48e8da264a523b0058a8591eDouglas Gregor 31300cf3cc2718671aa48e8da264a523b0058a8591eDouglas Gregor friend bool operator!=(NestedNameSpecifierLoc X, 31400cf3cc2718671aa48e8da264a523b0058a8591eDouglas Gregor NestedNameSpecifierLoc Y) { 31500cf3cc2718671aa48e8da264a523b0058a8591eDouglas Gregor return !(X == Y); 31600cf3cc2718671aa48e8da264a523b0058a8591eDouglas Gregor } 317c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor}; 318c34348a7ef1a6b3f92a644a227953800cd1f9947Douglas Gregor 3195f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor/// \brief Class that aids in the construction of nested-name-specifiers along 3205f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor/// with source-location information for all of the components of the 3215f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor/// nested-name-specifier. 3225f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregorclass NestedNameSpecifierLocBuilder { 3235f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// \brief The current representation of the nested-name-specifier we're 3245f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// building. 3255f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor NestedNameSpecifier *Representation; 3265f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor 3275f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// \brief Buffer used to store source-location information for the 3285f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// nested-name-specifier. 3295f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// 3305f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// Note that we explicitly manage the buffer (rather than using a 3315f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// SmallVector) because \c Declarator expects it to be possible to memcpy() 3325f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// a \c CXXScopeSpec, and CXXScopeSpec uses a NestedNameSpecifierLocBuilder. 3335f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor char *Buffer; 3345f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor 3355f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// \brief The size of the buffer used to store source-location information 3365f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// for the nested-name-specifier. 3375f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor unsigned BufferSize; 3385f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor 3395f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// \brief The capacity of the buffer used to store source-location 3405f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// information for the nested-name-specifier. 3415f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor unsigned BufferCapacity; 3425f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor 3435f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregorpublic: 3445f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor NestedNameSpecifierLocBuilder(); 3455f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor 3465f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor NestedNameSpecifierLocBuilder(const NestedNameSpecifierLocBuilder &Other); 3475f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor 3485f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor NestedNameSpecifierLocBuilder & 3495f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor operator=(const NestedNameSpecifierLocBuilder &Other); 3505f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor 3515f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor ~NestedNameSpecifierLocBuilder(); 3525f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor 3535f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// \brief Retrieve the representation of the nested-name-specifier. 3545f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor NestedNameSpecifier *getRepresentation() const { return Representation; } 3555f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor 3565f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// \brief Extend the current nested-name-specifier by another 3575f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// nested-name-specifier component of the form 'type::'. 3585f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// 3595f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// \param Context The AST context in which this nested-name-specifier 3605f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// resides. 3615f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// 3625f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// \param TemplateKWLoc The location of the 'template' keyword, if present. 3635f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// 3645f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// \param TL The TypeLoc that describes the type preceding the '::'. 3655f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// 3665f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// \param ColonColonLoc The location of the trailing '::'. 3675f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor void Extend(ASTContext &Context, SourceLocation TemplateKWLoc, TypeLoc TL, 3685f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor SourceLocation ColonColonLoc); 3695f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor 3705f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// \brief Extend the current nested-name-specifier by another 3715f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// nested-name-specifier component of the form 'identifier::'. 3725f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// 3735f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// \param Context The AST context in which this nested-name-specifier 3745f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// resides. 3755f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// 3765f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// \param Identifier The identifier. 3775f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// 3785f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// \param IdentifierLoc The location of the identifier. 3795f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// 3805f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// \param ColonColonLoc The location of the trailing '::'. 3815f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor void Extend(ASTContext &Context, IdentifierInfo *Identifier, 3825f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor SourceLocation IdentifierLoc, SourceLocation ColonColonLoc); 3835f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor 3845f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// \brief Extend the current nested-name-specifier by another 3855f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// nested-name-specifier component of the form 'namespace::'. 3865f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// 3875f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// \param Context The AST context in which this nested-name-specifier 3885f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// resides. 3895f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// 3905f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// \param Namespace The namespace. 3915f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// 3925f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// \param NamespaceLoc The location of the namespace name. 3935f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// 3945f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// \param ColonColonLoc The location of the trailing '::'. 3955f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor void Extend(ASTContext &Context, NamespaceDecl *Namespace, 3965f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor SourceLocation NamespaceLoc, SourceLocation ColonColonLoc); 3975f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor 3985f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// \brief Extend the current nested-name-specifier by another 3995f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// nested-name-specifier component of the form 'namespace-alias::'. 4005f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// 4015f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// \param Context The AST context in which this nested-name-specifier 4025f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// resides. 4035f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// 4045f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// \param Alias The namespace alias. 4055f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// 4065f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// \param AliasLoc The location of the namespace alias 4075f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// name. 4085f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// 4095f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// \param ColonColonLoc The location of the trailing '::'. 4105f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor void Extend(ASTContext &Context, NamespaceAliasDecl *Alias, 4115f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor SourceLocation AliasLoc, SourceLocation ColonColonLoc); 4125f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor 4135f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// \brief Turn this (empty) nested-name-specifier into the global 4145f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// nested-name-specifier '::'. 4155f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor void MakeGlobal(ASTContext &Context, SourceLocation ColonColonLoc); 4165f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor 4175f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// \brief Make a new nested-name-specifier from incomplete source-location 4185f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// information. 4195f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// 4205f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// This routine should be used very, very rarely, in cases where we 4215f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// need to synthesize a nested-name-specifier. Most code should instead use 4225f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// \c Adopt() with a proper \c NestedNameSpecifierLoc. 4235f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor void MakeTrivial(ASTContext &Context, NestedNameSpecifier *Qualifier, 4245f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor SourceRange R); 4255f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor 4265f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// \brief Adopt an existing nested-name-specifier (with source-range 4275f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// information). 4285f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor void Adopt(NestedNameSpecifierLoc Other); 4295f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor 4305f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// \brief Retrieve the source range covered by this nested-name-specifier. 4315f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor SourceRange getSourceRange() const { 4325f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor return NestedNameSpecifierLoc(Representation, Buffer).getSourceRange(); 4335f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor } 4345f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor 4355f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// \brief Retrieve a nested-name-specifier with location information, 4365f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// copied into the given AST context. 4375f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// 4385f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// \param Context The context into which this nested-name-specifier will be 4395f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// copied. 4405f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor NestedNameSpecifierLoc getWithLocInContext(ASTContext &Context) const; 4415f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor 4429dc71d2fddcd283e07d45f3894c8559e2f7dd9a7John McCall /// \brief Retrieve a nested-name-specifier with location 4439dc71d2fddcd283e07d45f3894c8559e2f7dd9a7John McCall /// information based on the information in this builder. This loc 4449dc71d2fddcd283e07d45f3894c8559e2f7dd9a7John McCall /// will contain references to the builder's internal data and may 4459dc71d2fddcd283e07d45f3894c8559e2f7dd9a7John McCall /// be invalidated by any change to the builder. 4469dc71d2fddcd283e07d45f3894c8559e2f7dd9a7John McCall NestedNameSpecifierLoc getTemporary() const { 4479dc71d2fddcd283e07d45f3894c8559e2f7dd9a7John McCall return NestedNameSpecifierLoc(Representation, Buffer); 4489dc71d2fddcd283e07d45f3894c8559e2f7dd9a7John McCall } 4499dc71d2fddcd283e07d45f3894c8559e2f7dd9a7John McCall 4505f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// \brief Clear out this builder, and prepare it to build another 4515f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// nested-name-specifier with source-location information. 4525f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor void Clear() { 4535f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor Representation = 0; 4545f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor BufferSize = 0; 4555f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor } 4565f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor 4575f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// \brief Retrieve the underlying buffer. 4585f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// 4595f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// \returns A pair containing a pointer to the buffer of source-location 4605f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// data and the size of the source-location data that resides in that 4615f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor /// buffer. 4625f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor std::pair<char *, unsigned> getBuffer() const { 4635f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor return std::make_pair(Buffer, BufferSize); 4645f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor } 4655f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor}; 4665f791bb44417ecc201ed57a85d0fe02001d8a615Douglas Gregor 467dacd434c49658286c380c7b4c357d76d53cb4aa1Douglas Gregor/// Insertion operator for diagnostics. This allows sending NestedNameSpecifiers 468dacd434c49658286c380c7b4c357d76d53cb4aa1Douglas Gregor/// into a diagnostic with <<. 469dacd434c49658286c380c7b4c357d76d53cb4aa1Douglas Gregorinline const DiagnosticBuilder &operator<<(const DiagnosticBuilder &DB, 470dacd434c49658286c380c7b4c357d76d53cb4aa1Douglas Gregor NestedNameSpecifier *NNS) { 4711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DB.AddTaggedVal(reinterpret_cast<intptr_t>(NNS), 472dacd434c49658286c380c7b4c357d76d53cb4aa1Douglas Gregor Diagnostic::ak_nestednamespec); 473dacd434c49658286c380c7b4c357d76d53cb4aa1Douglas Gregor return DB; 474dacd434c49658286c380c7b4c357d76d53cb4aa1Douglas Gregor} 4751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 476e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor} 477e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor 478e4e5b054b4917f0ee493bb2fda5b1ec749bfb9a1Douglas Gregor#endif 479