diff options
Diffstat (limited to 'include/clang/AST/ExternalASTSource.h')
-rw-r--r-- | include/clang/AST/ExternalASTSource.h | 103 |
1 files changed, 66 insertions, 37 deletions
diff --git a/include/clang/AST/ExternalASTSource.h b/include/clang/AST/ExternalASTSource.h index d8dd18ecb8..be013c5d6b 100644 --- a/include/clang/AST/ExternalASTSource.h +++ b/include/clang/AST/ExternalASTSource.h @@ -1,4 +1,4 @@ -//===--- ExternalASTSource.h - Abstract External AST Interface --*- C++ -*-===// +//===- ExternalASTSource.h - Abstract External AST Interface ----*- C++ -*-===// // // The LLVM Compiler Infrastructure // @@ -11,24 +11,44 @@ // construction of AST nodes from some external source. // //===----------------------------------------------------------------------===// + #ifndef LLVM_CLANG_AST_EXTERNALASTSOURCE_H #define LLVM_CLANG_AST_EXTERNALASTSOURCE_H #include "clang/AST/CharUnits.h" #include "clang/AST/DeclBase.h" +#include "clang/Basic/LLVM.h" #include "clang/Basic/Module.h" +#include "clang/Basic/SourceLocation.h" +#include "llvm/ADT/ArrayRef.h" #include "llvm/ADT/DenseMap.h" +#include "llvm/ADT/IntrusiveRefCntPtr.h" +#include "llvm/ADT/Optional.h" +#include "llvm/ADT/PointerUnion.h" +#include "llvm/ADT/STLExtras.h" +#include "llvm/ADT/SmallVector.h" +#include "llvm/ADT/StringRef.h" +#include "llvm/ADT/iterator.h" +#include "llvm/Support/PointerLikeTypeTraits.h" +#include <cassert> +#include <cstddef> +#include <cstdint> +#include <iterator> +#include <string> +#include <utility> namespace clang { class ASTConsumer; +class ASTContext; class CXXBaseSpecifier; class CXXCtorInitializer; +class CXXRecordDecl; class DeclarationName; -class ExternalSemaSource; // layering violation required for downcasting class FieldDecl; -class Module; +class IdentifierInfo; class NamedDecl; +class ObjCInterfaceDecl; class RecordDecl; class Selector; class Stmt; @@ -42,30 +62,31 @@ class TagDecl; /// actual type and declaration nodes, and read parts of declaration /// contexts. class ExternalASTSource : public RefCountedBase<ExternalASTSource> { + friend class ExternalSemaSource; + /// Generation number for this external AST source. Must be increased /// whenever we might have added new redeclarations for existing decls. - uint32_t CurrentGeneration; + uint32_t CurrentGeneration = 0; /// \brief Whether this AST source also provides information for /// semantic analysis. - bool SemaSource; - - friend class ExternalSemaSource; + bool SemaSource = false; public: - ExternalASTSource() : CurrentGeneration(0), SemaSource(false) { } - + ExternalASTSource() = default; virtual ~ExternalASTSource(); /// \brief RAII class for safely pairing a StartedDeserializing call /// with FinishedDeserializing. class Deserializing { ExternalASTSource *Source; + public: explicit Deserializing(ExternalASTSource *source) : Source(source) { assert(Source); Source->StartedDeserializing(); } + ~Deserializing() { Source->FinishedDeserializing(); } @@ -122,7 +143,7 @@ public: virtual CXXBaseSpecifier *GetExternalCXXBaseSpecifiers(uint64_t Offset); /// \brief Update an out-of-date identifier. - virtual void updateOutOfDateIdentifier(IdentifierInfo &II) { } + virtual void updateOutOfDateIdentifier(IdentifierInfo &II) {} /// \brief Find all declarations with the given name in the given context, /// and add them to the context by calling SetExternalVisibleDeclsForName @@ -154,12 +175,13 @@ public: const Module *ClangModule = nullptr; public: - ASTSourceDescriptor(){}; + ASTSourceDescriptor() = default; ASTSourceDescriptor(StringRef Name, StringRef Path, StringRef ASTFile, ASTFileSignature Signature) : PCHModuleName(std::move(Name)), Path(std::move(Path)), - ASTFile(std::move(ASTFile)), Signature(Signature){}; + ASTFile(std::move(ASTFile)), Signature(Signature) {} ASTSourceDescriptor(const Module &M); + std::string getModuleName() const; StringRef getPath() const { return Path; } StringRef getASTFile() const { return ASTFile; } @@ -246,7 +268,6 @@ public: /// The default implementation of this method is a no-op. virtual void PrintStats(); - /// \brief Perform layout on the given record. /// /// This routine allows the external AST source to provide an specific @@ -289,7 +310,7 @@ public: size_t mmap_bytes; MemoryBufferSizes(size_t malloc_bytes, size_t mmap_bytes) - : malloc_bytes(malloc_bytes), mmap_bytes(mmap_bytes) {} + : malloc_bytes(malloc_bytes), mmap_bytes(mmap_bytes) {} }; /// Return the amount of memory used by memory buffers, breaking down @@ -329,12 +350,12 @@ struct LazyOffsetPtr { /// /// If the low bit is clear, a pointer to the AST node. If the low /// bit is set, the upper 63 bits are the offset. - mutable uint64_t Ptr; + mutable uint64_t Ptr = 0; public: - LazyOffsetPtr() : Ptr(0) { } + LazyOffsetPtr() = default; + explicit LazyOffsetPtr(T *Ptr) : Ptr(reinterpret_cast<uint64_t>(Ptr)) {} - explicit LazyOffsetPtr(T *Ptr) : Ptr(reinterpret_cast<uint64_t>(Ptr)) { } explicit LazyOffsetPtr(uint64_t Offset) : Ptr((Offset << 1) | 0x01) { assert((Offset << 1 >> 1) == Offset && "Offsets must require < 63 bits"); if (Offset == 0) @@ -392,15 +413,16 @@ struct LazyGenerationalUpdatePtr { /// A cache of the value of this pointer, in the most recent generation in /// which we queried it. struct LazyData { - LazyData(ExternalASTSource *Source, T Value) - : ExternalSource(Source), LastGeneration(0), LastValue(Value) {} ExternalASTSource *ExternalSource; - uint32_t LastGeneration; + uint32_t LastGeneration = 0; T LastValue; + + LazyData(ExternalASTSource *Source, T Value) + : ExternalSource(Source), LastValue(Value) {} }; // Our value is represented as simply T if there is no external AST source. - typedef llvm::PointerUnion<T, LazyData*> ValueType; + using ValueType = llvm::PointerUnion<T, LazyData*>; ValueType Value; LazyGenerationalUpdatePtr(ValueType V) : Value(V) {} @@ -459,25 +481,31 @@ public: return LazyGenerationalUpdatePtr(ValueType::getFromOpaqueValue(Ptr)); } }; -} // end namespace clang + +} // namespace clang /// Specialize PointerLikeTypeTraits to allow LazyGenerationalUpdatePtr to be /// placed into a PointerUnion. namespace llvm { + template<typename Owner, typename T, void (clang::ExternalASTSource::*Update)(Owner)> struct PointerLikeTypeTraits< clang::LazyGenerationalUpdatePtr<Owner, T, Update>> { - typedef clang::LazyGenerationalUpdatePtr<Owner, T, Update> Ptr; + using Ptr = clang::LazyGenerationalUpdatePtr<Owner, T, Update>; + static void *getAsVoidPointer(Ptr P) { return P.getOpaqueValue(); } static Ptr getFromVoidPointer(void *P) { return Ptr::getFromOpaqueValue(P); } + enum { NumLowBitsAvailable = PointerLikeTypeTraits<T>::NumLowBitsAvailable - 1 }; }; -} + +} // namespace llvm namespace clang { + /// \brief Represents a lazily-loaded vector of data. /// /// The lazily-loaded vector of data contains data that is partially loaded @@ -511,13 +539,14 @@ public: class iterator : public llvm::iterator_adaptor_base< iterator, int, std::random_access_iterator_tag, T, int, T *, T &> { + friend class LazyVector; + LazyVector *Self; iterator(LazyVector *Self, int Position) : iterator::iterator_adaptor_base(Position), Self(Self) {} bool isLoaded() const { return this->I < 0; } - friend class LazyVector; public: iterator() : iterator(nullptr, 0) {} @@ -562,23 +591,23 @@ public: }; /// \brief A lazy pointer to a statement. -typedef LazyOffsetPtr<Stmt, uint64_t, &ExternalASTSource::GetExternalDeclStmt> - LazyDeclStmtPtr; +using LazyDeclStmtPtr = + LazyOffsetPtr<Stmt, uint64_t, &ExternalASTSource::GetExternalDeclStmt>; /// \brief A lazy pointer to a declaration. -typedef LazyOffsetPtr<Decl, uint32_t, &ExternalASTSource::GetExternalDecl> - LazyDeclPtr; +using LazyDeclPtr = + LazyOffsetPtr<Decl, uint32_t, &ExternalASTSource::GetExternalDecl>; /// \brief A lazy pointer to a set of CXXCtorInitializers. -typedef LazyOffsetPtr<CXXCtorInitializer *, uint64_t, - &ExternalASTSource::GetExternalCXXCtorInitializers> - LazyCXXCtorInitializersPtr; +using LazyCXXCtorInitializersPtr = + LazyOffsetPtr<CXXCtorInitializer *, uint64_t, + &ExternalASTSource::GetExternalCXXCtorInitializers>; /// \brief A lazy pointer to a set of CXXBaseSpecifiers. -typedef LazyOffsetPtr<CXXBaseSpecifier, uint64_t, - &ExternalASTSource::GetExternalCXXBaseSpecifiers> - LazyCXXBaseSpecifiersPtr; +using LazyCXXBaseSpecifiersPtr = + LazyOffsetPtr<CXXBaseSpecifier, uint64_t, + &ExternalASTSource::GetExternalCXXBaseSpecifiers>; -} // end namespace clang +} // namespace clang -#endif +#endif // LLVM_CLANG_AST_EXTERNALASTSOURCE_H |