diff options
Diffstat (limited to 'include/clang/AST/ExternalASTSource.h')
| -rw-r--r-- | include/clang/AST/ExternalASTSource.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/include/clang/AST/ExternalASTSource.h b/include/clang/AST/ExternalASTSource.h index 96d14b2..18a1432 100644 --- a/include/clang/AST/ExternalASTSource.h +++ b/include/clang/AST/ExternalASTSource.h @@ -15,6 +15,8 @@ #define LLVM_CLANG_AST_EXTERNAL_AST_SOURCE_H #include "clang/AST/DeclBase.h" +#include "clang/AST/CharUnits.h" +#include "llvm/ADT/DenseMap.h" namespace clang { @@ -153,6 +155,12 @@ public: return FindExternalLexicalDecls(DC, DeclTy::classofKind, Result); } + /// \brief Get the decls that are contained in a file in the Offset/Length + /// range. \arg Length can be 0 to indicate a point at \arg Offset instead of + /// a range. + virtual void FindFileRegionDecls(FileID File, unsigned Offset,unsigned Length, + SmallVectorImpl<Decl *> &Decls) {} + /// \brief Gives the external AST source an opportunity to complete /// an incomplete type. virtual void CompleteType(TagDecl *Tag) {} @@ -190,6 +198,44 @@ 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 + /// layout for a record, overriding the layout that would normally be + /// constructed. It is intended for clients who receive specific layout + /// details rather than source code (such as LLDB). The client is expected + /// to fill in the field offsets, base offsets, virtual base offsets, and + /// complete object size. + /// + /// \param Record The record whose layout is being requested. + /// + /// \param Size The final size of the record, in bits. + /// + /// \param Alignment The final alignment of the record, in bits. + /// + /// \param FieldOffsets The offset of each of the fields within the record, + /// expressed in bits. All of the fields must be provided with offsets. + /// + /// \param BaseOffsets The offset of each of the direct, non-virtual base + /// classes. If any bases are not given offsets, the bases will be laid + /// out according to the ABI. + /// + /// \param VirtualBaseOffsets The offset of each of the virtual base classes + /// (either direct or not). If any bases are not given offsets, the bases will be laid + /// out according to the ABI. + /// + /// \returns true if the record layout was provided, false otherwise. + virtual bool + layoutRecordType(const RecordDecl *Record, + uint64_t &Size, uint64_t &Alignment, + llvm::DenseMap<const FieldDecl *, uint64_t> &FieldOffsets, + llvm::DenseMap<const CXXRecordDecl *, CharUnits> &BaseOffsets, + llvm::DenseMap<const CXXRecordDecl *, CharUnits> &VirtualBaseOffsets) + { + return false; + } + //===--------------------------------------------------------------------===// // Queries for performance analysis. //===--------------------------------------------------------------------===// |
