Revert changes from r170428, as I accidentally changed the line endings of these files to Windows style.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@170431 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 1355 insertions, 1367 deletions

diff --git a/include/clang/Serialization/ASTBitCodes.h b/include/clang/Serialization/ASTBitCodes.h
index 868a1758b6..4273e14787 100644
--- a/include/clang/Serialization/ASTBitCodes.h
+++ b/include/clang/Serialization/ASTBitCodes.h
@@ -1,1367 +1,1355 @@
-//===- ASTBitCodes.h - Enum values for the PCH bitcode format ---*- C++ -*-===//

-//

-//                     The LLVM Compiler Infrastructure

-//

-// This file is distributed under the University of Illinois Open Source

-// License. See LICENSE.TXT for details.

-//

-//===----------------------------------------------------------------------===//

-//

-// This header defines Bitcode enum values for Clang serialized AST files.

-//

-// The enum values defined in this file should be considered permanent.  If

-// new features are added, they should have values added at the end of the

-// respective lists.

-//

-//===----------------------------------------------------------------------===//

-#ifndef LLVM_CLANG_FRONTEND_PCHBITCODES_H

-#define LLVM_CLANG_FRONTEND_PCHBITCODES_H

-

-#include "clang/AST/Type.h"

-#include "llvm/ADT/DenseMap.h"

-#include "llvm/Bitcode/BitCodes.h"

-#include "llvm/Support/DataTypes.h"

-

-namespace clang {

-  namespace serialization {

-    /// \brief AST file major version number supported by this version of

-    /// Clang.

-    ///

-    /// Whenever the AST file format changes in a way that makes it

-    /// incompatible with previous versions (such that a reader

-    /// designed for the previous version could not support reading

-    /// the new version), this number should be increased.

-    ///

-    /// Version 4 of AST files also requires that the version control branch and

-    /// revision match exactly, since there is no backward compatibility of

-    /// AST files at this time.

-    const unsigned VERSION_MAJOR = 5;

-

-    /// \brief AST file minor version number supported by this version of

-    /// Clang.

-    ///

-    /// Whenever the AST format changes in a way that is still

-    /// compatible with previous versions (such that a reader designed

-    /// for the previous version could still support reading the new

-    /// version by ignoring new kinds of subblocks), this number

-    /// should be increased.

-    const unsigned VERSION_MINOR = 0;

-

-    /// \brief An ID number that refers to an identifier in an AST file.

-    /// 

-    /// The ID numbers of identifiers are consecutive (in order of discovery)

-    /// and start at 1. 0 is reserved for NULL.

-    typedef uint32_t IdentifierID;

-    

-    /// \brief An ID number that refers to a declaration in an AST file.

-    ///

-    /// The ID numbers of declarations are consecutive (in order of

-    /// discovery), with values below NUM_PREDEF_DECL_IDS being reserved. 

-    /// At the start of a chain of precompiled headers, declaration ID 1 is 

-    /// used for the translation unit declaration.

-    typedef uint32_t DeclID;

-

-    /// \brief a Decl::Kind/DeclID pair.

-    typedef std::pair<uint32_t, DeclID> KindDeclIDPair;

-

-    // FIXME: Turn these into classes so we can have some type safety when

-    // we go from local ID to global and vice-versa.

-    typedef DeclID LocalDeclID;

-    typedef DeclID GlobalDeclID;

-

-    /// \brief An ID number that refers to a type in an AST file.

-    ///

-    /// The ID of a type is partitioned into two parts: the lower

-    /// three bits are used to store the const/volatile/restrict

-    /// qualifiers (as with QualType) and the upper bits provide a

-    /// type index. The type index values are partitioned into two

-    /// sets. The values below NUM_PREDEF_TYPE_IDs are predefined type

-    /// IDs (based on the PREDEF_TYPE_*_ID constants), with 0 as a

-    /// placeholder for "no type". Values from NUM_PREDEF_TYPE_IDs are

-    /// other types that have serialized representations.

-    typedef uint32_t TypeID;

-

-    /// \brief A type index; the type ID with the qualifier bits removed.

-    class TypeIdx {

-      uint32_t Idx;

-    public:

-      TypeIdx() : Idx(0) { }

-      explicit TypeIdx(uint32_t index) : Idx(index) { }

-

-      uint32_t getIndex() const { return Idx; }

-      TypeID asTypeID(unsigned FastQuals) const {

-        if (Idx == uint32_t(-1))

-          return TypeID(-1);

-        

-        return (Idx << Qualifiers::FastWidth) | FastQuals;

-      }

-      static TypeIdx fromTypeID(TypeID ID) {

-        if (ID == TypeID(-1))

-          return TypeIdx(-1);

-        

-        return TypeIdx(ID >> Qualifiers::FastWidth);

-      }

-    };

-

-    /// A structure for putting "fast"-unqualified QualTypes into a

-    /// DenseMap.  This uses the standard pointer hash function.

-    struct UnsafeQualTypeDenseMapInfo {

-      static inline bool isEqual(QualType A, QualType B) { return A == B; }

-      static inline QualType getEmptyKey() {

-        return QualType::getFromOpaquePtr((void*) 1);

-      }

-      static inline QualType getTombstoneKey() {

-        return QualType::getFromOpaquePtr((void*) 2);

-      }

-      static inline unsigned getHashValue(QualType T) {

-        assert(!T.getLocalFastQualifiers() && 

-               "hash invalid for types with fast quals");

-        uintptr_t v = reinterpret_cast<uintptr_t>(T.getAsOpaquePtr());

-        return (unsigned(v) >> 4) ^ (unsigned(v) >> 9);

-      }

-    };

-

-    /// \brief An ID number that refers to an identifier in an AST file.

-    typedef uint32_t IdentID;

-

-    /// \brief The number of predefined identifier IDs.

-    const unsigned int NUM_PREDEF_IDENT_IDS = 1;

-

-    /// \brief An ID number that refers to a macro in an AST file.

-    typedef uint32_t MacroID;

-    

-    /// \brief The number of predefined macro IDs.

-    const unsigned int NUM_PREDEF_MACRO_IDS = 1;

-

-    /// \brief An ID number that refers to an ObjC selector in an AST file.

-    typedef uint32_t SelectorID;

-

-    /// \brief The number of predefined selector IDs.

-    const unsigned int NUM_PREDEF_SELECTOR_IDS = 1;

-    

-    /// \brief An ID number that refers to a set of CXXBaseSpecifiers in an 

-    /// AST file.

-    typedef uint32_t CXXBaseSpecifiersID;

-    

-    /// \brief An ID number that refers to an entity in the detailed

-    /// preprocessing record.

-    typedef uint32_t PreprocessedEntityID;

-

-    /// \brief An ID number that refers to a submodule in a module file.

-    typedef uint32_t SubmoduleID;

-    

-    /// \brief The number of predefined submodule IDs.

-    const unsigned int NUM_PREDEF_SUBMODULE_IDS = 1;

-

-    /// \brief Source range/offset of a preprocessed entity.

-    struct PPEntityOffset {

-      /// \brief Raw source location of beginning of range.

-      unsigned Begin;

-      /// \brief Raw source location of end of range.

-      unsigned End;

-      /// \brief Offset in the AST file.

-      uint32_t BitOffset;

-

-      PPEntityOffset(SourceRange R, uint32_t BitOffset)

-        : Begin(R.getBegin().getRawEncoding()),

-          End(R.getEnd().getRawEncoding()),

-          BitOffset(BitOffset) { }

-    };

-

-    /// \brief Source range/offset of a preprocessed entity.

-    struct DeclOffset {

-      /// \brief Raw source location.

-      unsigned Loc;

-      /// \brief Offset in the AST file.

-      uint32_t BitOffset;

-

-      DeclOffset() : Loc(0), BitOffset(0) { }

-      DeclOffset(SourceLocation Loc, uint32_t BitOffset)

-        : Loc(Loc.getRawEncoding()),

-          BitOffset(BitOffset) { }

-      void setLocation(SourceLocation L) {

-        Loc = L.getRawEncoding();

-      }

-    };

-

-    /// \brief The number of predefined preprocessed entity IDs.

-    const unsigned int NUM_PREDEF_PP_ENTITY_IDS = 1;

-

-    /// \brief Describes the various kinds of blocks that occur within

-    /// an AST file.

-    enum BlockIDs {

-      /// \brief The AST block, which acts as a container around the

-      /// full AST block.

-      AST_BLOCK_ID = llvm::bitc::FIRST_APPLICATION_BLOCKID,

-

-      /// \brief The block containing information about the source

-      /// manager.

-      SOURCE_MANAGER_BLOCK_ID,

-

-      /// \brief The block containing information about the

-      /// preprocessor.

-      PREPROCESSOR_BLOCK_ID,

-

-      /// \brief The block containing the definitions of all of the

-      /// types and decls used within the AST file.

-      DECLTYPES_BLOCK_ID,

-

-      /// \brief The block containing DECL_UPDATES records.

-      DECL_UPDATES_BLOCK_ID,

-      

-      /// \brief The block containing the detailed preprocessing record.

-      PREPROCESSOR_DETAIL_BLOCK_ID,

-      

-      /// \brief The block containing the submodule structure.

-      SUBMODULE_BLOCK_ID,

-

-      /// \brief The block containing comments.

-      COMMENTS_BLOCK_ID,

-

-      /// \brief The control block, which contains all of the

-      /// information that needs to be validated prior to committing

-      /// to loading the AST file.

-      CONTROL_BLOCK_ID,

-

-      /// \brief The block of input files, which were used as inputs

-      /// to create this AST file.

-      ///

-      /// This block is part of the control block.

-      INPUT_FILES_BLOCK_ID

-    };

-

-    /// \brief Record types that occur within the control block.

-    enum ControlRecordTypes {

-      /// \brief AST file metadata, including the AST file version number

-      /// and information about the compiler used to build this AST file.

-      METADATA = 1,

-

-      /// \brief Record code for the list of other AST files imported by

-      /// this AST file.

-      IMPORTS = 2,

-

-      /// \brief Record code for the language options table.

-      ///

-      /// The record with this code contains the contents of the

-      /// LangOptions structure. We serialize the entire contents of

-      /// the structure, and let the reader decide which options are

-      /// actually important to check.

-      LANGUAGE_OPTIONS = 3,

-

-      /// \brief Record code for the target options table.

-      TARGET_OPTIONS = 4,

-

-      /// \brief Record code for the original file that was used to

-      /// generate the AST file, including both its file ID and its

-      /// name.

-      ORIGINAL_FILE = 5,

-      

-      /// \brief The directory that the PCH was originally created in.

-      ORIGINAL_PCH_DIR = 6,

-

-      /// \brief Record code for file ID of the file or buffer that was used to

-      /// generate the AST file.

-      ORIGINAL_FILE_ID = 7,

-

-      /// \brief Offsets into the input-files block where input files

-      /// reside.

-      INPUT_FILE_OFFSETS = 8,

-

-      /// \brief Record code for the diagnostic options table.

-      DIAGNOSTIC_OPTIONS = 9,

-

-      /// \brief Record code for the filesystem options table.

-      FILE_SYSTEM_OPTIONS = 10,

-

-      /// \brief Record code for the headers search options table.

-      HEADER_SEARCH_OPTIONS = 11,

-

-      /// \brief Record code for the preprocessor options table.

-      PREPROCESSOR_OPTIONS = 12

-    };

-

-    /// \brief Record types that occur within the input-files block

-    /// inside the control block.

-    enum InputFileRecordTypes {

-      /// \brief An input file.

-      INPUT_FILE = 1

-    };

-

-    /// \brief Record types that occur within the AST block itself.

-    enum ASTRecordTypes {

-      /// \brief Record code for the offsets of each type.

-      ///

-      /// The TYPE_OFFSET constant describes the record that occurs

-      /// within the AST block. The record itself is an array of offsets that

-      /// point into the declarations and types block (identified by 

-      /// DECLTYPES_BLOCK_ID). The index into the array is based on the ID

-      /// of a type. For a given type ID @c T, the lower three bits of

-      /// @c T are its qualifiers (const, volatile, restrict), as in

-      /// the QualType class. The upper bits, after being shifted and

-      /// subtracting NUM_PREDEF_TYPE_IDS, are used to index into the

-      /// TYPE_OFFSET block to determine the offset of that type's

-      /// corresponding record within the DECLTYPES_BLOCK_ID block.

-      TYPE_OFFSET = 1,

-

-      /// \brief Record code for the offsets of each decl.

-      ///

-      /// The DECL_OFFSET constant describes the record that occurs

-      /// within the block identified by DECL_OFFSETS_BLOCK_ID within

-      /// the AST block. The record itself is an array of offsets that

-      /// point into the declarations and types block (identified by

-      /// DECLTYPES_BLOCK_ID). The declaration ID is an index into this

-      /// record, after subtracting one to account for the use of

-      /// declaration ID 0 for a NULL declaration pointer. Index 0 is

-      /// reserved for the translation unit declaration.

-      DECL_OFFSET = 2,

-

-      /// \brief Record code for the table of offsets of each

-      /// identifier ID.

-      ///

-      /// The offset table contains offsets into the blob stored in

-      /// the IDENTIFIER_TABLE record. Each offset points to the

-      /// NULL-terminated string that corresponds to that identifier.

-      IDENTIFIER_OFFSET = 3,

-

-      /// \brief This is so that older clang versions, before the introduction

-      /// of the control block, can read and reject the newer PCH format.

-      /// *DON"T CHANGE THIS NUMBER*.

-      METADATA_OLD_FORMAT = 4,

-

-      /// \brief Record code for the identifier table.

-      ///

-      /// The identifier table is a simple blob that contains

-      /// NULL-terminated strings for all of the identifiers

-      /// referenced by the AST file. The IDENTIFIER_OFFSET table

-      /// contains the mapping from identifier IDs to the characters

-      /// in this blob. Note that the starting offsets of all of the

-      /// identifiers are odd, so that, when the identifier offset

-      /// table is loaded in, we can use the low bit to distinguish

-      /// between offsets (for unresolved identifier IDs) and

-      /// IdentifierInfo pointers (for already-resolved identifier

-      /// IDs).

-      IDENTIFIER_TABLE = 5,

-

-      /// \brief Record code for the array of external definitions.

-      ///

-      /// The AST file contains a list of all of the unnamed external

-      /// definitions present within the parsed headers, stored as an

-      /// array of declaration IDs. These external definitions will be

-      /// reported to the AST consumer after the AST file has been

-      /// read, since their presence can affect the semantics of the

-      /// program (e.g., for code generation).

-      EXTERNAL_DEFINITIONS = 6,

-

-      /// \brief Record code for the set of non-builtin, special

-      /// types.

-      ///

-      /// This record contains the type IDs for the various type nodes

-      /// that are constructed during semantic analysis (e.g.,

-      /// __builtin_va_list). The SPECIAL_TYPE_* constants provide

-      /// offsets into this record.

-      SPECIAL_TYPES = 7,

-

-      /// \brief Record code for the extra statistics we gather while

-      /// generating an AST file.

-      STATISTICS = 8,

-

-      /// \brief Record code for the array of tentative definitions.

-      TENTATIVE_DEFINITIONS = 9,

-

-      /// \brief Record code for the array of locally-scoped external

-      /// declarations.

-      LOCALLY_SCOPED_EXTERNAL_DECLS = 10,

-

-      /// \brief Record code for the table of offsets into the

-      /// Objective-C method pool.

-      SELECTOR_OFFSETS = 11,

-

-      /// \brief Record code for the Objective-C method pool,

-      METHOD_POOL = 12,

-

-      /// \brief The value of the next __COUNTER__ to dispense.

-      /// [PP_COUNTER_VALUE, Val]

-      PP_COUNTER_VALUE = 13,

-

-      /// \brief Record code for the table of offsets into the block

-      /// of source-location information.

-      SOURCE_LOCATION_OFFSETS = 14,

-

-      /// \brief Record code for the set of source location entries

-      /// that need to be preloaded by the AST reader.

-      ///

-      /// This set contains the source location entry for the

-      /// predefines buffer and for any file entries that need to be

-      /// preloaded.

-      SOURCE_LOCATION_PRELOADS = 15,

-

-      /// \brief Record code for the set of ext_vector type names.

-      EXT_VECTOR_DECLS = 16,

-      

-      /// \brief Record code for the array of unused file scoped decls.

-      UNUSED_FILESCOPED_DECLS = 17,

-      

-      /// \brief Record code for the table of offsets to entries in the

-      /// preprocessing record.

-      PPD_ENTITIES_OFFSETS = 18,

-

-      /// \brief Record code for the array of VTable uses.

-      VTABLE_USES = 19,

-

-      /// \brief Record code for the array of dynamic classes.

-      DYNAMIC_CLASSES = 20,

-

-      /// \brief Record code for referenced selector pool.

-      REFERENCED_SELECTOR_POOL = 21,

-

-      /// \brief Record code for an update to the TU's lexically contained

-      /// declarations.

-      TU_UPDATE_LEXICAL = 22,

-      

-      /// \brief Record code for the array describing the locations (in the

-      /// LOCAL_REDECLARATIONS record) of the redeclaration chains, indexed by

-      /// the first known ID.

-      LOCAL_REDECLARATIONS_MAP = 23,

-

-      /// \brief Record code for declarations that Sema keeps references of.

-      SEMA_DECL_REFS = 24,

-

-      /// \brief Record code for weak undeclared identifiers.

-      WEAK_UNDECLARED_IDENTIFIERS = 25,

-

-      /// \brief Record code for pending implicit instantiations.

-      PENDING_IMPLICIT_INSTANTIATIONS = 26,

-

-      /// \brief Record code for a decl replacement block.

-      ///

-      /// If a declaration is modified after having been deserialized, and then

-      /// written to a dependent AST file, its ID and offset must be added to

-      /// the replacement block.

-      DECL_REPLACEMENTS = 27,

-

-      /// \brief Record code for an update to a decl context's lookup table.

-      ///

-      /// In practice, this should only be used for the TU and namespaces.

-      UPDATE_VISIBLE = 28,

-

-      /// \brief Record for offsets of DECL_UPDATES records for declarations

-      /// that were modified after being deserialized and need updates.

-      DECL_UPDATE_OFFSETS = 29,

-

-      /// \brief Record of updates for a declaration that was modified after

-      /// being deserialized.

-      DECL_UPDATES = 30,

-      

-      /// \brief Record code for the table of offsets to CXXBaseSpecifier

-      /// sets.

-      CXX_BASE_SPECIFIER_OFFSETS = 31,

-

-      /// \brief Record code for \#pragma diagnostic mappings.

-      DIAG_PRAGMA_MAPPINGS = 32,

-

-      /// \brief Record code for special CUDA declarations.

-      CUDA_SPECIAL_DECL_REFS = 33,

-      

-      /// \brief Record code for header search information.

-      HEADER_SEARCH_TABLE = 34,

-

-      /// \brief Record code for floating point \#pragma options.

-      FP_PRAGMA_OPTIONS = 35,

-

-      /// \brief Record code for enabled OpenCL extensions.

-      OPENCL_EXTENSIONS = 36,

-

-      /// \brief The list of delegating constructor declarations.

-      DELEGATING_CTORS = 37,

-

-      /// \brief Record code for the set of known namespaces, which are used

-      /// for typo correction.

-      KNOWN_NAMESPACES = 38,

-

-      /// \brief Record code for the remapping information used to relate

-      /// loaded modules to the various offsets and IDs(e.g., source location 

-      /// offests, declaration and type IDs) that are used in that module to

-      /// refer to other modules.

-      MODULE_OFFSET_MAP = 39,

-

-      /// \brief Record code for the source manager line table information,

-      /// which stores information about \#line directives.

-      SOURCE_MANAGER_LINE_TABLE = 40,

-

-      /// \brief Record code for map of Objective-C class definition IDs to the 

-      /// ObjC categories in a module that are attached to that class.

-      OBJC_CATEGORIES_MAP = 41,

-

-      /// \brief Record code for a file sorted array of DeclIDs in a module.

-      FILE_SORTED_DECLS = 42,

-      

-      /// \brief Record code for an array of all of the (sub)modules that were

-      /// imported by the AST file.

-      IMPORTED_MODULES = 43,

-      

-      /// \brief Record code for the set of merged declarations in an AST file.

-      MERGED_DECLARATIONS = 44,

-      

-      /// \brief Record code for the array of redeclaration chains.

-      ///

-      /// This array can only be interpreted properly using the local 

-      /// redeclarations map.

-      LOCAL_REDECLARATIONS = 45,

-      

-      /// \brief Record code for the array of Objective-C categories (including

-      /// extensions).

-      ///

-      /// This array can only be interpreted properly using the Objective-C

-      /// categories map.

-      OBJC_CATEGORIES = 46,

-

-      /// \brief Record code for the table of offsets of each macro ID.

-      ///

-      /// The offset table contains offsets into the blob stored in

-      /// the preprocessor block. Each offset points to the corresponding

-      /// macro definition.

-      MACRO_OFFSET = 47,

-

-      /// \brief Record of updates for a macro that was modified after

-      /// being deserialized.

-      MACRO_UPDATES = 48

-    };

-

-    /// \brief Record types used within a source manager block.

-    enum SourceManagerRecordTypes {

-      /// \brief Describes a source location entry (SLocEntry) for a

-      /// file.

-      SM_SLOC_FILE_ENTRY = 1,

-      /// \brief Describes a source location entry (SLocEntry) for a

-      /// buffer.

-      SM_SLOC_BUFFER_ENTRY = 2,

-      /// \brief Describes a blob that contains the data for a buffer

-      /// entry. This kind of record always directly follows a

-      /// SM_SLOC_BUFFER_ENTRY record or a SM_SLOC_FILE_ENTRY with an

-      /// overridden buffer.

-      SM_SLOC_BUFFER_BLOB = 3,

-      /// \brief Describes a source location entry (SLocEntry) for a

-      /// macro expansion.

-      SM_SLOC_EXPANSION_ENTRY = 4

-    };

-

-    /// \brief Record types used within a preprocessor block.

-    enum PreprocessorRecordTypes {

-      // The macros in the PP section are a PP_MACRO_* instance followed by a

-      // list of PP_TOKEN instances for each token in the definition.

-

-      /// \brief An object-like macro definition.

-      /// [PP_MACRO_OBJECT_LIKE, IdentInfoID, SLoc, IsUsed]

-      PP_MACRO_OBJECT_LIKE = 1,

-

-      /// \brief A function-like macro definition.

-      /// [PP_MACRO_FUNCTION_LIKE, \<ObjectLikeStuff>, IsC99Varargs,

-      /// IsGNUVarars, NumArgs, ArgIdentInfoID* ]

-      PP_MACRO_FUNCTION_LIKE = 2,

-

-      /// \brief Describes one token.

-      /// [PP_TOKEN, SLoc, Length, IdentInfoID, Kind, Flags]

-      PP_TOKEN = 3

-    };

-

-    /// \brief Record types used within a preprocessor detail block.

-    enum PreprocessorDetailRecordTypes {

-      /// \brief Describes a macro expansion within the preprocessing record.

-      PPD_MACRO_EXPANSION = 0,

-      

-      /// \brief Describes a macro definition within the preprocessing record.

-      PPD_MACRO_DEFINITION = 1,

-      

-      /// \brief Describes an inclusion directive within the preprocessing

-      /// record.

-      PPD_INCLUSION_DIRECTIVE = 2

-    };

-    

-    /// \brief Record types used within a submodule description block.

-    enum SubmoduleRecordTypes {

-      /// \brief Metadata for submodules as a whole.

-      SUBMODULE_METADATA = 0,

-      /// \brief Defines the major attributes of a submodule, including its

-      /// name and parent.

-      SUBMODULE_DEFINITION = 1,

-      /// \brief Specifies the umbrella header used to create this module,

-      /// if any.

-      SUBMODULE_UMBRELLA_HEADER = 2,

-      /// \brief Specifies a header that falls into this (sub)module.

-      SUBMODULE_HEADER = 3,

-      /// \brief Specifies a top-level header that falls into this (sub)module.

-      SUBMODULE_TOPHEADER = 4,

-      /// \brief Specifies an umbrella directory.

-      SUBMODULE_UMBRELLA_DIR = 5,

-      /// \brief Specifies the submodules that are imported by this 

-      /// submodule.

-      SUBMODULE_IMPORTS = 6,

-      /// \brief Specifies the submodules that are re-exported from this 

-      /// submodule.

-      SUBMODULE_EXPORTS = 7,

-      /// \brief Specifies a required feature.

-      SUBMODULE_REQUIRES = 8,

-      /// \brief Specifies a header that has been explicitly excluded

-      /// from this submodule.

-      SUBMODULE_EXCLUDED_HEADER = 9

-    };

-

-    /// \brief Record types used within a comments block.

-    enum CommentRecordTypes {

-      COMMENTS_RAW_COMMENT = 0

-    };

-

-    /// \defgroup ASTAST AST file AST constants

-    ///

-    /// The constants in this group describe various components of the

-    /// abstract syntax tree within an AST file.

-    ///

-    /// @{

-

-    /// \brief Predefined type IDs.

-    ///

-    /// These type IDs correspond to predefined types in the AST

-    /// context, such as built-in types (int) and special place-holder

-    /// types (the \<overload> and \<dependent> type markers). Such

-    /// types are never actually serialized, since they will be built

-    /// by the AST context when it is created.

-    enum PredefinedTypeIDs {

-      /// \brief The NULL type.

-      PREDEF_TYPE_NULL_ID       = 0,

-      /// \brief The void type.

-      PREDEF_TYPE_VOID_ID       = 1,

-      /// \brief The 'bool' or '_Bool' type.

-      PREDEF_TYPE_BOOL_ID       = 2,

-      /// \brief The 'char' type, when it is unsigned.

-      PREDEF_TYPE_CHAR_U_ID     = 3,

-      /// \brief The 'unsigned char' type.

-      PREDEF_TYPE_UCHAR_ID      = 4,

-      /// \brief The 'unsigned short' type.

-      PREDEF_TYPE_USHORT_ID     = 5,

-      /// \brief The 'unsigned int' type.

-      PREDEF_TYPE_UINT_ID       = 6,

-      /// \brief The 'unsigned long' type.

-      PREDEF_TYPE_ULONG_ID      = 7,

-      /// \brief The 'unsigned long long' type.

-      PREDEF_TYPE_ULONGLONG_ID  = 8,

-      /// \brief The 'char' type, when it is signed.

-      PREDEF_TYPE_CHAR_S_ID     = 9,

-      /// \brief The 'signed char' type.

-      PREDEF_TYPE_SCHAR_ID      = 10,

-      /// \brief The C++ 'wchar_t' type.

-      PREDEF_TYPE_WCHAR_ID      = 11,

-      /// \brief The (signed) 'short' type.

-      PREDEF_TYPE_SHORT_ID      = 12,

-      /// \brief The (signed) 'int' type.

-      PREDEF_TYPE_INT_ID        = 13,

-      /// \brief The (signed) 'long' type.

-      PREDEF_TYPE_LONG_ID       = 14,

-      /// \brief The (signed) 'long long' type.

-      PREDEF_TYPE_LONGLONG_ID   = 15,

-      /// \brief The 'float' type.

-      PREDEF_TYPE_FLOAT_ID      = 16,

-      /// \brief The 'double' type.

-      PREDEF_TYPE_DOUBLE_ID     = 17,

-      /// \brief The 'long double' type.

-      PREDEF_TYPE_LONGDOUBLE_ID = 18,

-      /// \brief The placeholder type for overloaded function sets.

-      PREDEF_TYPE_OVERLOAD_ID   = 19,

-      /// \brief The placeholder type for dependent types.

-      PREDEF_TYPE_DEPENDENT_ID  = 20,

-      /// \brief The '__uint128_t' type.

-      PREDEF_TYPE_UINT128_ID    = 21,

-      /// \brief The '__int128_t' type.

-      PREDEF_TYPE_INT128_ID     = 22,

-      /// \brief The type of 'nullptr'.

-      PREDEF_TYPE_NULLPTR_ID    = 23,

-      /// \brief The C++ 'char16_t' type.

-      PREDEF_TYPE_CHAR16_ID     = 24,

-      /// \brief The C++ 'char32_t' type.

-      PREDEF_TYPE_CHAR32_ID     = 25,

-      /// \brief The ObjC 'id' type.

-      PREDEF_TYPE_OBJC_ID       = 26,

-      /// \brief The ObjC 'Class' type.

-      PREDEF_TYPE_OBJC_CLASS    = 27,

-      /// \brief The ObjC 'SEL' type.

-      PREDEF_TYPE_OBJC_SEL      = 28,

-      /// \brief The 'unknown any' placeholder type.

-      PREDEF_TYPE_UNKNOWN_ANY   = 29,

-      /// \brief The placeholder type for bound member functions.

-      PREDEF_TYPE_BOUND_MEMBER  = 30,

-      /// \brief The "auto" deduction type.

-      PREDEF_TYPE_AUTO_DEDUCT   = 31,

-      /// \brief The "auto &&" deduction type.

-      PREDEF_TYPE_AUTO_RREF_DEDUCT = 32,

-      /// \brief The OpenCL 'half' / ARM NEON __fp16 type.

-      PREDEF_TYPE_HALF_ID       = 33,

-      /// \brief ARC's unbridged-cast placeholder type.

-      PREDEF_TYPE_ARC_UNBRIDGED_CAST = 34,

-      /// \brief The pseudo-object placeholder type.

-      PREDEF_TYPE_PSEUDO_OBJECT = 35,

-      /// \brief The __va_list_tag placeholder type.

-      PREDEF_TYPE_VA_LIST_TAG = 36,

-      /// \brief The placeholder type for builtin functions.

-      PREDEF_TYPE_BUILTIN_FN = 37,

-      /// \brief OpenCL 1d image type.

-      PREDEF_TYPE_IMAGE1D_ID    = 38,

-      /// \brief OpenCL 1d image array type.

-      PREDEF_TYPE_IMAGE1D_ARR_ID = 39,

-      /// \brief OpenCL 1d image buffer type.

-      PREDEF_TYPE_IMAGE1D_BUFF_ID = 40,

-      /// \brief OpenCL 2d image type.

-      PREDEF_TYPE_IMAGE2D_ID    = 41,

-      /// \brief OpenCL 2d image array type.

-      PREDEF_TYPE_IMAGE2D_ARR_ID = 42,

-      /// \brief OpenCL 3d image type.

-      PREDEF_TYPE_IMAGE3D_ID    = 43

-    };

-

-    /// \brief The number of predefined type IDs that are reserved for

-    /// the PREDEF_TYPE_* constants.

-    ///

-    /// Type IDs for non-predefined types will start at

-    /// NUM_PREDEF_TYPE_IDs.

-    const unsigned NUM_PREDEF_TYPE_IDS = 100;

-

-    /// \brief The number of allowed abbreviations in bits

-    const unsigned NUM_ALLOWED_ABBREVS_SIZE = 4;

-

-    /// \brief Record codes for each kind of type.

-    ///

-    /// These constants describe the type records that can occur within a

-    /// block identified by DECLTYPES_BLOCK_ID in the AST file. Each

-    /// constant describes a record for a specific type class in the

-    /// AST.

-    enum TypeCode {

-      /// \brief An ExtQualType record.

-      TYPE_EXT_QUAL                 = 1,

-      /// \brief A ComplexType record.

-      TYPE_COMPLEX                  = 3,

-      /// \brief A PointerType record.

-      TYPE_POINTER                  = 4,

-      /// \brief A BlockPointerType record.

-      TYPE_BLOCK_POINTER            = 5,

-      /// \brief An LValueReferenceType record.

-      TYPE_LVALUE_REFERENCE         = 6,

-      /// \brief An RValueReferenceType record.

-      TYPE_RVALUE_REFERENCE         = 7,

-      /// \brief A MemberPointerType record.

-      TYPE_MEMBER_POINTER           = 8,

-      /// \brief A ConstantArrayType record.

-      TYPE_CONSTANT_ARRAY           = 9,

-      /// \brief An IncompleteArrayType record.

-      TYPE_INCOMPLETE_ARRAY         = 10,

-      /// \brief A VariableArrayType record.

-      TYPE_VARIABLE_ARRAY           = 11,

-      /// \brief A VectorType record.

-      TYPE_VECTOR                   = 12,

-      /// \brief An ExtVectorType record.

-      TYPE_EXT_VECTOR               = 13,

-      /// \brief A FunctionNoProtoType record.

-      TYPE_FUNCTION_NO_PROTO        = 14,

-      /// \brief A FunctionProtoType record.

-      TYPE_FUNCTION_PROTO           = 15,

-      /// \brief A TypedefType record.

-      TYPE_TYPEDEF                  = 16,

-      /// \brief A TypeOfExprType record.

-      TYPE_TYPEOF_EXPR              = 17,

-      /// \brief A TypeOfType record.

-      TYPE_TYPEOF                   = 18,

-      /// \brief A RecordType record.

-      TYPE_RECORD                   = 19,

-      /// \brief An EnumType record.

-      TYPE_ENUM                     = 20,

-      /// \brief An ObjCInterfaceType record.

-      TYPE_OBJC_INTERFACE           = 21,

-      /// \brief An ObjCObjectPointerType record.

-      TYPE_OBJC_OBJECT_POINTER      = 22,

-      /// \brief a DecltypeType record.

-      TYPE_DECLTYPE                 = 23,

-      /// \brief An ElaboratedType record.

-      TYPE_ELABORATED               = 24,

-      /// \brief A SubstTemplateTypeParmType record.

-      TYPE_SUBST_TEMPLATE_TYPE_PARM = 25,

-      /// \brief An UnresolvedUsingType record.

-      TYPE_UNRESOLVED_USING         = 26,

-      /// \brief An InjectedClassNameType record.

-      TYPE_INJECTED_CLASS_NAME      = 27,

-      /// \brief An ObjCObjectType record.

-      TYPE_OBJC_OBJECT              = 28,

-      /// \brief An TemplateTypeParmType record.

-      TYPE_TEMPLATE_TYPE_PARM       = 29,

-      /// \brief An TemplateSpecializationType record.

-      TYPE_TEMPLATE_SPECIALIZATION  = 30,

-      /// \brief A DependentNameType record.

-      TYPE_DEPENDENT_NAME           = 31,

-      /// \brief A DependentTemplateSpecializationType record.

-      TYPE_DEPENDENT_TEMPLATE_SPECIALIZATION = 32,

-      /// \brief A DependentSizedArrayType record.

-      TYPE_DEPENDENT_SIZED_ARRAY    = 33,

-      /// \brief A ParenType record.

-      TYPE_PAREN                    = 34,

-      /// \brief A PackExpansionType record.

-      TYPE_PACK_EXPANSION           = 35,

-      /// \brief An AttributedType record.

-      TYPE_ATTRIBUTED               = 36,

-      /// \brief A SubstTemplateTypeParmPackType record.

-      TYPE_SUBST_TEMPLATE_TYPE_PARM_PACK = 37,

-      /// \brief A AutoType record.

-      TYPE_AUTO                  = 38,

-      /// \brief A UnaryTransformType record.

-      TYPE_UNARY_TRANSFORM       = 39,

-      /// \brief An AtomicType record.

-      TYPE_ATOMIC                = 40

-    };

-

-    /// \brief The type IDs for special types constructed by semantic

-    /// analysis.

-    ///

-    /// The constants in this enumeration are indices into the

-    /// SPECIAL_TYPES record.

-    enum SpecialTypeIDs {

-      /// \brief CFConstantString type

-      SPECIAL_TYPE_CF_CONSTANT_STRING          = 0,

-      /// \brief C FILE typedef type

-      SPECIAL_TYPE_FILE                        = 1,

-      /// \brief C jmp_buf typedef type

-      SPECIAL_TYPE_JMP_BUF                     = 2,

-      /// \brief C sigjmp_buf typedef type

-      SPECIAL_TYPE_SIGJMP_BUF                  = 3,

-      /// \brief Objective-C "id" redefinition type

-      SPECIAL_TYPE_OBJC_ID_REDEFINITION        = 4,

-      /// \brief Objective-C "Class" redefinition type

-      SPECIAL_TYPE_OBJC_CLASS_REDEFINITION     = 5,

-      /// \brief Objective-C "SEL" redefinition type

-      SPECIAL_TYPE_OBJC_SEL_REDEFINITION       = 6,

-      /// \brief C ucontext_t typedef type

-      SPECIAL_TYPE_UCONTEXT_T                  = 7

-    };

-    

-    /// \brief The number of special type IDs.

-    const unsigned NumSpecialTypeIDs = 8;

-

-    /// \brief Predefined declaration IDs.

-    ///

-    /// These declaration IDs correspond to predefined declarations in the AST

-    /// context, such as the NULL declaration ID. Such declarations are never

-    /// actually serialized, since they will be built by the AST context when 

-    /// it is created.

-    enum PredefinedDeclIDs {

-      /// \brief The NULL declaration.

-      PREDEF_DECL_NULL_ID       = 0,

-      

-      /// \brief The translation unit.

-      PREDEF_DECL_TRANSLATION_UNIT_ID = 1,

-      

-      /// \brief The Objective-C 'id' type.

-      PREDEF_DECL_OBJC_ID_ID = 2,

-      

-      /// \brief The Objective-C 'SEL' type.

-      PREDEF_DECL_OBJC_SEL_ID = 3,

-      

-      /// \brief The Objective-C 'Class' type.

-      PREDEF_DECL_OBJC_CLASS_ID = 4,

-            

-      /// \brief The Objective-C 'Protocol' type.

-      PREDEF_DECL_OBJC_PROTOCOL_ID = 5,

-      

-      /// \brief The signed 128-bit integer type.

-      PREDEF_DECL_INT_128_ID = 6,

-

-      /// \brief The unsigned 128-bit integer type.

-      PREDEF_DECL_UNSIGNED_INT_128_ID = 7,

-      

-      /// \brief The internal 'instancetype' typedef.

-      PREDEF_DECL_OBJC_INSTANCETYPE_ID = 8,

-

-      /// \brief The internal '__builtin_va_list' typedef.

-      PREDEF_DECL_BUILTIN_VA_LIST_ID = 9

-    };

-

-    /// \brief The number of declaration IDs that are predefined.

-    ///

-    /// For more information about predefined declarations, see the

-    /// \c PredefinedDeclIDs type and the PREDEF_DECL_*_ID constants.

-    const unsigned int NUM_PREDEF_DECL_IDS = 10;

-    

-    /// \brief Record codes for each kind of declaration.

-    ///

-    /// These constants describe the declaration records that can occur within

-    /// a declarations block (identified by DECLS_BLOCK_ID). Each

-    /// constant describes a record for a specific declaration class

-    /// in the AST.

-    enum DeclCode {

-      /// \brief A TypedefDecl record.

-      DECL_TYPEDEF = 51,

-      /// \brief A TypeAliasDecl record.

-      DECL_TYPEALIAS,

-      /// \brief An EnumDecl record.

-      DECL_ENUM,

-      /// \brief A RecordDecl record.

-      DECL_RECORD,

-      /// \brief An EnumConstantDecl record.

-      DECL_ENUM_CONSTANT,

-      /// \brief A FunctionDecl record.

-      DECL_FUNCTION,

-      /// \brief A ObjCMethodDecl record.

-      DECL_OBJC_METHOD,

-      /// \brief A ObjCInterfaceDecl record.

-      DECL_OBJC_INTERFACE,

-      /// \brief A ObjCProtocolDecl record.

-      DECL_OBJC_PROTOCOL,

-      /// \brief A ObjCIvarDecl record.

-      DECL_OBJC_IVAR,

-      /// \brief A ObjCAtDefsFieldDecl record.

-      DECL_OBJC_AT_DEFS_FIELD,

-      /// \brief A ObjCCategoryDecl record.

-      DECL_OBJC_CATEGORY,

-      /// \brief A ObjCCategoryImplDecl record.

-      DECL_OBJC_CATEGORY_IMPL,

-      /// \brief A ObjCImplementationDecl record.

-      DECL_OBJC_IMPLEMENTATION,

-      /// \brief A ObjCCompatibleAliasDecl record.

-      DECL_OBJC_COMPATIBLE_ALIAS,

-      /// \brief A ObjCPropertyDecl record.

-      DECL_OBJC_PROPERTY,

-      /// \brief A ObjCPropertyImplDecl record.

-      DECL_OBJC_PROPERTY_IMPL,

-      /// \brief A FieldDecl record.

-      DECL_FIELD,

-      /// \brief A VarDecl record.

-      DECL_VAR,

-      /// \brief An ImplicitParamDecl record.

-      DECL_IMPLICIT_PARAM,

-      /// \brief A ParmVarDecl record.

-      DECL_PARM_VAR,

-      /// \brief A FileScopeAsmDecl record.

-      DECL_FILE_SCOPE_ASM,

-      /// \brief A BlockDecl record.

-      DECL_BLOCK,

-      /// \brief A record that stores the set of declarations that are

-      /// lexically stored within a given DeclContext.

-      ///

-      /// The record itself is a blob that is an array of declaration IDs,

-      /// in the order in which those declarations were added to the

-      /// declaration context. This data is used when iterating over

-      /// the contents of a DeclContext, e.g., via

-      /// DeclContext::decls_begin() and DeclContext::decls_end().

-      DECL_CONTEXT_LEXICAL,

-      /// \brief A record that stores the set of declarations that are

-      /// visible from a given DeclContext.

-      ///

-      /// The record itself stores a set of mappings, each of which

-      /// associates a declaration name with one or more declaration

-      /// IDs. This data is used when performing qualified name lookup

-      /// into a DeclContext via DeclContext::lookup.

-      DECL_CONTEXT_VISIBLE,

-      /// \brief A LabelDecl record.

-      DECL_LABEL,

-      /// \brief A NamespaceDecl record.

-      DECL_NAMESPACE,

-      /// \brief A NamespaceAliasDecl record.

-      DECL_NAMESPACE_ALIAS,

-      /// \brief A UsingDecl record.

-      DECL_USING,

-      /// \brief A UsingShadowDecl record.

-      DECL_USING_SHADOW,

-      /// \brief A UsingDirecitveDecl record.

-      DECL_USING_DIRECTIVE,

-      /// \brief An UnresolvedUsingValueDecl record.

-      DECL_UNRESOLVED_USING_VALUE,

-      /// \brief An UnresolvedUsingTypenameDecl record.

-      DECL_UNRESOLVED_USING_TYPENAME,

-      /// \brief A LinkageSpecDecl record.

-      DECL_LINKAGE_SPEC,

-      /// \brief A CXXRecordDecl record.

-      DECL_CXX_RECORD,

-      /// \brief A CXXMethodDecl record.

-      DECL_CXX_METHOD,

-      /// \brief A CXXConstructorDecl record.

-      DECL_CXX_CONSTRUCTOR,

-      /// \brief A CXXDestructorDecl record.

-      DECL_CXX_DESTRUCTOR,

-      /// \brief A CXXConversionDecl record.

-      DECL_CXX_CONVERSION,

-      /// \brief An AccessSpecDecl record.

-      DECL_ACCESS_SPEC,

-

-      /// \brief A FriendDecl record.

-      DECL_FRIEND,

-      /// \brief A FriendTemplateDecl record.

-      DECL_FRIEND_TEMPLATE,

-      /// \brief A ClassTemplateDecl record.

-      DECL_CLASS_TEMPLATE,

-      /// \brief A ClassTemplateSpecializationDecl record.

-      DECL_CLASS_TEMPLATE_SPECIALIZATION,

-      /// \brief A ClassTemplatePartialSpecializationDecl record.

-      DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION,

-      /// \brief A FunctionTemplateDecl record.

-      DECL_FUNCTION_TEMPLATE,

-      /// \brief A TemplateTypeParmDecl record.

-      DECL_TEMPLATE_TYPE_PARM,

-      /// \brief A NonTypeTemplateParmDecl record.

-      DECL_NON_TYPE_TEMPLATE_PARM,

-      /// \brief A TemplateTemplateParmDecl record.

-      DECL_TEMPLATE_TEMPLATE_PARM,

-      /// \brief A TypeAliasTemplateDecl record.

-      DECL_TYPE_ALIAS_TEMPLATE,

-      /// \brief A StaticAssertDecl record.

-      DECL_STATIC_ASSERT,

-      /// \brief A record containing CXXBaseSpecifiers.

-      DECL_CXX_BASE_SPECIFIERS,

-      /// \brief A IndirectFieldDecl record.

-      DECL_INDIRECTFIELD,

-      /// \brief A NonTypeTemplateParmDecl record that stores an expanded

-      /// non-type template parameter pack.

-      DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK,

-      /// \brief A TemplateTemplateParmDecl record that stores an expanded

-      /// template template parameter pack.

-      DECL_EXPANDED_TEMPLATE_TEMPLATE_PARM_PACK,

-      /// \brief A ClassScopeFunctionSpecializationDecl record a class scope

-      /// function specialization. (Microsoft extension).

-      DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION,

-      /// \brief An ImportDecl recording a module import.

-      DECL_IMPORT

-    };

-

-    /// \brief Record codes for each kind of statement or expression.

-    ///

-    /// These constants describe the records that describe statements

-    /// or expressions. These records  occur within type and declarations

-    /// block, so they begin with record values of 100.  Each constant 

-    /// describes a record for a specific statement or expression class in the

-    /// AST.

-    enum StmtCode {

-      /// \brief A marker record that indicates that we are at the end

-      /// of an expression.

-      STMT_STOP = 100,

-      /// \brief A NULL expression.

-      STMT_NULL_PTR,

-      /// \brief A reference to a previously [de]serialized Stmt record.

-      STMT_REF_PTR,

-      /// \brief A NullStmt record.

-      STMT_NULL,

-      /// \brief A CompoundStmt record.

-      STMT_COMPOUND,

-      /// \brief A CaseStmt record.

-      STMT_CASE,

-      /// \brief A DefaultStmt record.

-      STMT_DEFAULT,

-      /// \brief A LabelStmt record.

-      STMT_LABEL,

-      /// \brief An AttributedStmt record.

-      STMT_ATTRIBUTED,

-      /// \brief An IfStmt record.

-      STMT_IF,

-      /// \brief A SwitchStmt record.

-      STMT_SWITCH,

-      /// \brief A WhileStmt record.

-      STMT_WHILE,

-      /// \brief A DoStmt record.

-      STMT_DO,

-      /// \brief A ForStmt record.

-      STMT_FOR,

-      /// \brief A GotoStmt record.

-      STMT_GOTO,

-      /// \brief An IndirectGotoStmt record.

-      STMT_INDIRECT_GOTO,

-      /// \brief A ContinueStmt record.

-      STMT_CONTINUE,

-      /// \brief A BreakStmt record.

-      STMT_BREAK,

-      /// \brief A ReturnStmt record.

-      STMT_RETURN,

-      /// \brief A DeclStmt record.

-      STMT_DECL,

-      /// \brief A GCC-style AsmStmt record.

-      STMT_GCCASM,

-      /// \brief A MS-style AsmStmt record.

-      STMT_MSASM,

-      /// \brief A PredefinedExpr record.

-      EXPR_PREDEFINED,

-      /// \brief A DeclRefExpr record.

-      EXPR_DECL_REF,

-      /// \brief An IntegerLiteral record.

-      EXPR_INTEGER_LITERAL,

-      /// \brief A FloatingLiteral record.

-      EXPR_FLOATING_LITERAL,

-      /// \brief An ImaginaryLiteral record.

-      EXPR_IMAGINARY_LITERAL,

-      /// \brief A StringLiteral record.

-      EXPR_STRING_LITERAL,

-      /// \brief A CharacterLiteral record.

-      EXPR_CHARACTER_LITERAL,

-      /// \brief A ParenExpr record.

-      EXPR_PAREN,

-      /// \brief A ParenListExpr record.

-      EXPR_PAREN_LIST,

-      /// \brief A UnaryOperator record.

-      EXPR_UNARY_OPERATOR,

-      /// \brief An OffsetOfExpr record.

-      EXPR_OFFSETOF,

-      /// \brief A SizefAlignOfExpr record.

-      EXPR_SIZEOF_ALIGN_OF,

-      /// \brief An ArraySubscriptExpr record.

-      EXPR_ARRAY_SUBSCRIPT,

-      /// \brief A CallExpr record.

-      EXPR_CALL,

-      /// \brief A MemberExpr record.

-      EXPR_MEMBER,

-      /// \brief A BinaryOperator record.

-      EXPR_BINARY_OPERATOR,

-      /// \brief A CompoundAssignOperator record.

-      EXPR_COMPOUND_ASSIGN_OPERATOR,

-      /// \brief A ConditionOperator record.

-      EXPR_CONDITIONAL_OPERATOR,

-      /// \brief An ImplicitCastExpr record.

-      EXPR_IMPLICIT_CAST,

-      /// \brief A CStyleCastExpr record.

-      EXPR_CSTYLE_CAST,

-      /// \brief A CompoundLiteralExpr record.

-      EXPR_COMPOUND_LITERAL,

-      /// \brief An ExtVectorElementExpr record.

-      EXPR_EXT_VECTOR_ELEMENT,

-      /// \brief An InitListExpr record.

-      EXPR_INIT_LIST,

-      /// \brief A DesignatedInitExpr record.

-      EXPR_DESIGNATED_INIT,

-      /// \brief An ImplicitValueInitExpr record.

-      EXPR_IMPLICIT_VALUE_INIT,

-      /// \brief A VAArgExpr record.

-      EXPR_VA_ARG,

-      /// \brief An AddrLabelExpr record.

-      EXPR_ADDR_LABEL,

-      /// \brief A StmtExpr record.

-      EXPR_STMT,

-      /// \brief A ChooseExpr record.

-      EXPR_CHOOSE,

-      /// \brief A GNUNullExpr record.

-      EXPR_GNU_NULL,

-      /// \brief A ShuffleVectorExpr record.

-      EXPR_SHUFFLE_VECTOR,

-      /// \brief BlockExpr

-      EXPR_BLOCK,

-      /// \brief A GenericSelectionExpr record.

-      EXPR_GENERIC_SELECTION,

-      /// \brief A PseudoObjectExpr record.

-      EXPR_PSEUDO_OBJECT,

-      /// \brief An AtomicExpr record.

-      EXPR_ATOMIC,

-

-      // Objective-C

-

-      /// \brief An ObjCStringLiteral record.

-      EXPR_OBJC_STRING_LITERAL,

-

-      EXPR_OBJC_BOXED_EXPRESSION,

-      EXPR_OBJC_ARRAY_LITERAL,

-      EXPR_OBJC_DICTIONARY_LITERAL,

-

-    

-      /// \brief An ObjCEncodeExpr record.

-      EXPR_OBJC_ENCODE,

-      /// \brief An ObjCSelectorExpr record.

-      EXPR_OBJC_SELECTOR_EXPR,

-      /// \brief An ObjCProtocolExpr record.

-      EXPR_OBJC_PROTOCOL_EXPR,

-      /// \brief An ObjCIvarRefExpr record.

-      EXPR_OBJC_IVAR_REF_EXPR,

-      /// \brief An ObjCPropertyRefExpr record.

-      EXPR_OBJC_PROPERTY_REF_EXPR,

-      /// \brief An ObjCSubscriptRefExpr record.

-      EXPR_OBJC_SUBSCRIPT_REF_EXPR,

-      /// \brief UNUSED

-      EXPR_OBJC_KVC_REF_EXPR,

-      /// \brief An ObjCMessageExpr record.

-      EXPR_OBJC_MESSAGE_EXPR,

-      /// \brief An ObjCIsa Expr record.

-      EXPR_OBJC_ISA,

-      /// \brief An ObjCIndirectCopyRestoreExpr record.

-      EXPR_OBJC_INDIRECT_COPY_RESTORE,

-

-      /// \brief An ObjCForCollectionStmt record.

-      STMT_OBJC_FOR_COLLECTION,

-      /// \brief An ObjCAtCatchStmt record.

-      STMT_OBJC_CATCH,

-      /// \brief An ObjCAtFinallyStmt record.

-      STMT_OBJC_FINALLY,

-      /// \brief An ObjCAtTryStmt record.

-      STMT_OBJC_AT_TRY,

-      /// \brief An ObjCAtSynchronizedStmt record.

-      STMT_OBJC_AT_SYNCHRONIZED,

-      /// \brief An ObjCAtThrowStmt record.

-      STMT_OBJC_AT_THROW,

-      /// \brief An ObjCAutoreleasePoolStmt record.

-      STMT_OBJC_AUTORELEASE_POOL,

-      /// \brief A ObjCBoolLiteralExpr record.

-      EXPR_OBJC_BOOL_LITERAL,

-

-      // C++

-      

-      /// \brief A CXXCatchStmt record.

-      STMT_CXX_CATCH,

-      /// \brief A CXXTryStmt record.

-      STMT_CXX_TRY,

-      /// \brief A CXXForRangeStmt record.

-      STMT_CXX_FOR_RANGE,

-

-      /// \brief A CXXOperatorCallExpr record.

-      EXPR_CXX_OPERATOR_CALL,

-      /// \brief A CXXMemberCallExpr record.

-      EXPR_CXX_MEMBER_CALL,

-      /// \brief A CXXConstructExpr record.

-      EXPR_CXX_CONSTRUCT,

-      /// \brief A CXXTemporaryObjectExpr record.

-      EXPR_CXX_TEMPORARY_OBJECT,

-      /// \brief A CXXStaticCastExpr record.

-      EXPR_CXX_STATIC_CAST,

-      /// \brief A CXXDynamicCastExpr record.

-      EXPR_CXX_DYNAMIC_CAST,

-      /// \brief A CXXReinterpretCastExpr record.

-      EXPR_CXX_REINTERPRET_CAST,

-      /// \brief A CXXConstCastExpr record.

-      EXPR_CXX_CONST_CAST,

-      /// \brief A CXXFunctionalCastExpr record.

-      EXPR_CXX_FUNCTIONAL_CAST,

-      /// \brief A UserDefinedLiteral record.

-      EXPR_USER_DEFINED_LITERAL,

-      /// \brief A CXXBoolLiteralExpr record.

-      EXPR_CXX_BOOL_LITERAL,

-      EXPR_CXX_NULL_PTR_LITERAL,  // CXXNullPtrLiteralExpr

-      EXPR_CXX_TYPEID_EXPR,       // CXXTypeidExpr (of expr).

-      EXPR_CXX_TYPEID_TYPE,       // CXXTypeidExpr (of type).

-      EXPR_CXX_THIS,              // CXXThisExpr

-      EXPR_CXX_THROW,             // CXXThrowExpr

-      EXPR_CXX_DEFAULT_ARG,       // CXXDefaultArgExpr

-      EXPR_CXX_BIND_TEMPORARY,    // CXXBindTemporaryExpr

-

-      EXPR_CXX_SCALAR_VALUE_INIT, // CXXScalarValueInitExpr

-      EXPR_CXX_NEW,               // CXXNewExpr

-      EXPR_CXX_DELETE,            // CXXDeleteExpr

-      EXPR_CXX_PSEUDO_DESTRUCTOR, // CXXPseudoDestructorExpr

-      

-      EXPR_EXPR_WITH_CLEANUPS,    // ExprWithCleanups

-      

-      EXPR_CXX_DEPENDENT_SCOPE_MEMBER,   // CXXDependentScopeMemberExpr

-      EXPR_CXX_DEPENDENT_SCOPE_DECL_REF, // DependentScopeDeclRefExpr

-      EXPR_CXX_UNRESOLVED_CONSTRUCT,     // CXXUnresolvedConstructExpr

-      EXPR_CXX_UNRESOLVED_MEMBER,        // UnresolvedMemberExpr

-      EXPR_CXX_UNRESOLVED_LOOKUP,        // UnresolvedLookupExpr

-

-      EXPR_CXX_UNARY_TYPE_TRAIT,  // UnaryTypeTraitExpr

-      EXPR_CXX_EXPRESSION_TRAIT,  // ExpressionTraitExpr

-      EXPR_CXX_NOEXCEPT,          // CXXNoexceptExpr

-

-      EXPR_OPAQUE_VALUE,          // OpaqueValueExpr

-      EXPR_BINARY_CONDITIONAL_OPERATOR,  // BinaryConditionalOperator

-      EXPR_BINARY_TYPE_TRAIT,     // BinaryTypeTraitExpr

-      EXPR_TYPE_TRAIT,            // TypeTraitExpr

-      EXPR_ARRAY_TYPE_TRAIT,      // ArrayTypeTraitIntExpr

-      

-      EXPR_PACK_EXPANSION,        // PackExpansionExpr

-      EXPR_SIZEOF_PACK,           // SizeOfPackExpr

-      EXPR_SUBST_NON_TYPE_TEMPLATE_PARM, // SubstNonTypeTemplateParmExpr

-      EXPR_SUBST_NON_TYPE_TEMPLATE_PARM_PACK,// SubstNonTypeTemplateParmPackExpr

-      EXPR_FUNCTION_PARM_PACK,    // FunctionParmPackExpr

-      EXPR_MATERIALIZE_TEMPORARY, // MaterializeTemporaryExpr

-      

-      // CUDA

-      EXPR_CUDA_KERNEL_CALL,       // CUDAKernelCallExpr      

-

-      // OpenCL

-      EXPR_ASTYPE,                 // AsTypeExpr

-

-      // Microsoft

-      EXPR_CXX_UUIDOF_EXPR,       // CXXUuidofExpr (of expr).

-      EXPR_CXX_UUIDOF_TYPE,       // CXXUuidofExpr (of type).

-      STMT_SEH_EXCEPT,            // SEHExceptStmt

-      STMT_SEH_FINALLY,           // SEHFinallyStmt

-      STMT_SEH_TRY,               // SEHTryStmt

-      

-      // ARC

-      EXPR_OBJC_BRIDGED_CAST,     // ObjCBridgedCastExpr

-      

-      STMT_MS_DEPENDENT_EXISTS,   // MSDependentExistsStmt

-      EXPR_LAMBDA                 // LambdaExpr

-    };

-

-    /// \brief The kinds of designators that can occur in a

-    /// DesignatedInitExpr.

-    enum DesignatorTypes {

-      /// \brief Field designator where only the field name is known.

-      DESIG_FIELD_NAME  = 0,

-      /// \brief Field designator where the field has been resolved to

-      /// a declaration.

-      DESIG_FIELD_DECL  = 1,

-      /// \brief Array designator.

-      DESIG_ARRAY       = 2,

-      /// \brief GNU array range designator.

-      DESIG_ARRAY_RANGE = 3

-    };

-

-    /// \brief The different kinds of data that can occur in a

-    /// CtorInitializer.

-    enum CtorInitializerType {

-      CTOR_INITIALIZER_BASE,

-      CTOR_INITIALIZER_DELEGATING,

-      CTOR_INITIALIZER_MEMBER,

-      CTOR_INITIALIZER_INDIRECT_MEMBER

-    };

-

-    /// \brief Describes the redeclarations of a declaration.

-    struct LocalRedeclarationsInfo {

-      DeclID FirstID;      // The ID of the first declaration

-      unsigned Offset;     // Offset into the array of redeclaration chains.

-      

-      friend bool operator<(const LocalRedeclarationsInfo &X,

-                            const LocalRedeclarationsInfo &Y) {

-        return X.FirstID < Y.FirstID;

-      }

-      

-      friend bool operator>(const LocalRedeclarationsInfo &X,

-                            const LocalRedeclarationsInfo &Y) {

-        return X.FirstID > Y.FirstID;

-      }

-      

-      friend bool operator<=(const LocalRedeclarationsInfo &X,

-                             const LocalRedeclarationsInfo &Y) {

-        return X.FirstID <= Y.FirstID;

-      }

-      

-      friend bool operator>=(const LocalRedeclarationsInfo &X,

-                             const LocalRedeclarationsInfo &Y) {

-        return X.FirstID >= Y.FirstID;

-      }

-    };

-

-    /// \brief Describes the categories of an Objective-C class.

-    struct ObjCCategoriesInfo {

-      DeclID DefinitionID; // The ID of the definition

-      unsigned Offset;     // Offset into the array of category lists.

-      

-      friend bool operator<(const ObjCCategoriesInfo &X,

-                            const ObjCCategoriesInfo &Y) {

-        return X.DefinitionID < Y.DefinitionID;

-      }

-      

-      friend bool operator>(const ObjCCategoriesInfo &X,

-                            const ObjCCategoriesInfo &Y) {

-        return X.DefinitionID > Y.DefinitionID;

-      }

-      

-      friend bool operator<=(const ObjCCategoriesInfo &X,

-                             const ObjCCategoriesInfo &Y) {

-        return X.DefinitionID <= Y.DefinitionID;

-      }

-      

-      friend bool operator>=(const ObjCCategoriesInfo &X,

-                             const ObjCCategoriesInfo &Y) {

-        return X.DefinitionID >= Y.DefinitionID;

-      }

-    };

-

-    /// @}

-  }

-} // end namespace clang

-

-#endif

+//===- ASTBitCodes.h - Enum values for the PCH bitcode format ---*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This header defines Bitcode enum values for Clang serialized AST files.
+//
+// The enum values defined in this file should be considered permanent.  If
+// new features are added, they should have values added at the end of the
+// respective lists.
+//
+//===----------------------------------------------------------------------===//
+#ifndef LLVM_CLANG_FRONTEND_PCHBITCODES_H
+#define LLVM_CLANG_FRONTEND_PCHBITCODES_H
+
+#include "clang/AST/Type.h"
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/Bitcode/BitCodes.h"
+#include "llvm/Support/DataTypes.h"
+
+namespace clang {
+  namespace serialization {
+    /// \brief AST file major version number supported by this version of
+    /// Clang.
+    ///
+    /// Whenever the AST file format changes in a way that makes it
+    /// incompatible with previous versions (such that a reader
+    /// designed for the previous version could not support reading
+    /// the new version), this number should be increased.
+    ///
+    /// Version 4 of AST files also requires that the version control branch and
+    /// revision match exactly, since there is no backward compatibility of
+    /// AST files at this time.
+    const unsigned VERSION_MAJOR = 5;
+
+    /// \brief AST file minor version number supported by this version of
+    /// Clang.
+    ///
+    /// Whenever the AST format changes in a way that is still
+    /// compatible with previous versions (such that a reader designed
+    /// for the previous version could still support reading the new
+    /// version by ignoring new kinds of subblocks), this number
+    /// should be increased.
+    const unsigned VERSION_MINOR = 0;
+
+    /// \brief An ID number that refers to an identifier in an AST file.
+    /// 
+    /// The ID numbers of identifiers are consecutive (in order of discovery)
+    /// and start at 1. 0 is reserved for NULL.
+    typedef uint32_t IdentifierID;
+    
+    /// \brief An ID number that refers to a declaration in an AST file.
+    ///
+    /// The ID numbers of declarations are consecutive (in order of
+    /// discovery), with values below NUM_PREDEF_DECL_IDS being reserved. 
+    /// At the start of a chain of precompiled headers, declaration ID 1 is 
+    /// used for the translation unit declaration.
+    typedef uint32_t DeclID;
+
+    /// \brief a Decl::Kind/DeclID pair.
+    typedef std::pair<uint32_t, DeclID> KindDeclIDPair;
+
+    // FIXME: Turn these into classes so we can have some type safety when
+    // we go from local ID to global and vice-versa.
+    typedef DeclID LocalDeclID;
+    typedef DeclID GlobalDeclID;
+
+    /// \brief An ID number that refers to a type in an AST file.
+    ///
+    /// The ID of a type is partitioned into two parts: the lower
+    /// three bits are used to store the const/volatile/restrict
+    /// qualifiers (as with QualType) and the upper bits provide a
+    /// type index. The type index values are partitioned into two
+    /// sets. The values below NUM_PREDEF_TYPE_IDs are predefined type
+    /// IDs (based on the PREDEF_TYPE_*_ID constants), with 0 as a
+    /// placeholder for "no type". Values from NUM_PREDEF_TYPE_IDs are
+    /// other types that have serialized representations.
+    typedef uint32_t TypeID;
+
+    /// \brief A type index; the type ID with the qualifier bits removed.
+    class TypeIdx {
+      uint32_t Idx;
+    public:
+      TypeIdx() : Idx(0) { }
+      explicit TypeIdx(uint32_t index) : Idx(index) { }
+
+      uint32_t getIndex() const { return Idx; }
+      TypeID asTypeID(unsigned FastQuals) const {
+        if (Idx == uint32_t(-1))
+          return TypeID(-1);
+        
+        return (Idx << Qualifiers::FastWidth) | FastQuals;
+      }
+      static TypeIdx fromTypeID(TypeID ID) {
+        if (ID == TypeID(-1))
+          return TypeIdx(-1);
+        
+        return TypeIdx(ID >> Qualifiers::FastWidth);
+      }
+    };
+
+    /// A structure for putting "fast"-unqualified QualTypes into a
+    /// DenseMap.  This uses the standard pointer hash function.
+    struct UnsafeQualTypeDenseMapInfo {
+      static inline bool isEqual(QualType A, QualType B) { return A == B; }
+      static inline QualType getEmptyKey() {
+        return QualType::getFromOpaquePtr((void*) 1);
+      }
+      static inline QualType getTombstoneKey() {
+        return QualType::getFromOpaquePtr((void*) 2);
+      }
+      static inline unsigned getHashValue(QualType T) {
+        assert(!T.getLocalFastQualifiers() && 
+               "hash invalid for types with fast quals");
+        uintptr_t v = reinterpret_cast<uintptr_t>(T.getAsOpaquePtr());
+        return (unsigned(v) >> 4) ^ (unsigned(v) >> 9);
+      }
+    };
+
+    /// \brief An ID number that refers to an identifier in an AST file.
+    typedef uint32_t IdentID;
+
+    /// \brief The number of predefined identifier IDs.
+    const unsigned int NUM_PREDEF_IDENT_IDS = 1;
+
+    /// \brief An ID number that refers to a macro in an AST file.
+    typedef uint32_t MacroID;
+    
+    /// \brief The number of predefined macro IDs.
+    const unsigned int NUM_PREDEF_MACRO_IDS = 1;
+
+    /// \brief An ID number that refers to an ObjC selector in an AST file.
+    typedef uint32_t SelectorID;
+
+    /// \brief The number of predefined selector IDs.
+    const unsigned int NUM_PREDEF_SELECTOR_IDS = 1;
+    
+    /// \brief An ID number that refers to a set of CXXBaseSpecifiers in an 
+    /// AST file.
+    typedef uint32_t CXXBaseSpecifiersID;
+    
+    /// \brief An ID number that refers to an entity in the detailed
+    /// preprocessing record.
+    typedef uint32_t PreprocessedEntityID;
+
+    /// \brief An ID number that refers to a submodule in a module file.
+    typedef uint32_t SubmoduleID;
+    
+    /// \brief The number of predefined submodule IDs.
+    const unsigned int NUM_PREDEF_SUBMODULE_IDS = 1;
+
+    /// \brief Source range/offset of a preprocessed entity.
+    struct PPEntityOffset {
+      /// \brief Raw source location of beginning of range.
+      unsigned Begin;
+      /// \brief Raw source location of end of range.
+      unsigned End;
+      /// \brief Offset in the AST file.
+      uint32_t BitOffset;
+
+      PPEntityOffset(SourceRange R, uint32_t BitOffset)
+        : Begin(R.getBegin().getRawEncoding()),
+          End(R.getEnd().getRawEncoding()),
+          BitOffset(BitOffset) { }
+    };
+
+    /// \brief Source range/offset of a preprocessed entity.
+    struct DeclOffset {
+      /// \brief Raw source location.
+      unsigned Loc;
+      /// \brief Offset in the AST file.
+      uint32_t BitOffset;
+
+      DeclOffset() : Loc(0), BitOffset(0) { }
+      DeclOffset(SourceLocation Loc, uint32_t BitOffset)
+        : Loc(Loc.getRawEncoding()),
+          BitOffset(BitOffset) { }
+      void setLocation(SourceLocation L) {
+        Loc = L.getRawEncoding();
+      }
+    };
+
+    /// \brief The number of predefined preprocessed entity IDs.
+    const unsigned int NUM_PREDEF_PP_ENTITY_IDS = 1;
+
+    /// \brief Describes the various kinds of blocks that occur within
+    /// an AST file.
+    enum BlockIDs {
+      /// \brief The AST block, which acts as a container around the
+      /// full AST block.
+      AST_BLOCK_ID = llvm::bitc::FIRST_APPLICATION_BLOCKID,
+
+      /// \brief The block containing information about the source
+      /// manager.
+      SOURCE_MANAGER_BLOCK_ID,
+
+      /// \brief The block containing information about the
+      /// preprocessor.
+      PREPROCESSOR_BLOCK_ID,
+
+      /// \brief The block containing the definitions of all of the
+      /// types and decls used within the AST file.
+      DECLTYPES_BLOCK_ID,
+
+      /// \brief The block containing DECL_UPDATES records.
+      DECL_UPDATES_BLOCK_ID,
+      
+      /// \brief The block containing the detailed preprocessing record.
+      PREPROCESSOR_DETAIL_BLOCK_ID,
+      
+      /// \brief The block containing the submodule structure.
+      SUBMODULE_BLOCK_ID,
+
+      /// \brief The block containing comments.
+      COMMENTS_BLOCK_ID,
+
+      /// \brief The control block, which contains all of the
+      /// information that needs to be validated prior to committing
+      /// to loading the AST file.
+      CONTROL_BLOCK_ID,
+
+      /// \brief The block of input files, which were used as inputs
+      /// to create this AST file.
+      ///
+      /// This block is part of the control block.
+      INPUT_FILES_BLOCK_ID
+    };
+
+    /// \brief Record types that occur within the control block.
+    enum ControlRecordTypes {
+      /// \brief AST file metadata, including the AST file version number
+      /// and information about the compiler used to build this AST file.
+      METADATA = 1,
+
+      /// \brief Record code for the list of other AST files imported by
+      /// this AST file.
+      IMPORTS = 2,
+
+      /// \brief Record code for the language options table.
+      ///
+      /// The record with this code contains the contents of the
+      /// LangOptions structure. We serialize the entire contents of
+      /// the structure, and let the reader decide which options are
+      /// actually important to check.
+      LANGUAGE_OPTIONS = 3,
+
+      /// \brief Record code for the target options table.
+      TARGET_OPTIONS = 4,
+
+      /// \brief Record code for the original file that was used to
+      /// generate the AST file, including both its file ID and its
+      /// name.
+      ORIGINAL_FILE = 5,
+      
+      /// \brief The directory that the PCH was originally created in.
+      ORIGINAL_PCH_DIR = 6,
+
+      /// \brief Record code for file ID of the file or buffer that was used to
+      /// generate the AST file.
+      ORIGINAL_FILE_ID = 7,
+
+      /// \brief Offsets into the input-files block where input files
+      /// reside.
+      INPUT_FILE_OFFSETS = 8,
+
+      /// \brief Record code for the diagnostic options table.
+      DIAGNOSTIC_OPTIONS = 9,
+
+      /// \brief Record code for the filesystem options table.
+      FILE_SYSTEM_OPTIONS = 10,
+
+      /// \brief Record code for the headers search options table.
+      HEADER_SEARCH_OPTIONS = 11,
+
+      /// \brief Record code for the preprocessor options table.
+      PREPROCESSOR_OPTIONS = 12
+    };
+
+    /// \brief Record types that occur within the input-files block
+    /// inside the control block.
+    enum InputFileRecordTypes {
+      /// \brief An input file.
+      INPUT_FILE = 1
+    };
+
+    /// \brief Record types that occur within the AST block itself.
+    enum ASTRecordTypes {
+      /// \brief Record code for the offsets of each type.
+      ///
+      /// The TYPE_OFFSET constant describes the record that occurs
+      /// within the AST block. The record itself is an array of offsets that
+      /// point into the declarations and types block (identified by 
+      /// DECLTYPES_BLOCK_ID). The index into the array is based on the ID
+      /// of a type. For a given type ID @c T, the lower three bits of
+      /// @c T are its qualifiers (const, volatile, restrict), as in
+      /// the QualType class. The upper bits, after being shifted and
+      /// subtracting NUM_PREDEF_TYPE_IDS, are used to index into the
+      /// TYPE_OFFSET block to determine the offset of that type's
+      /// corresponding record within the DECLTYPES_BLOCK_ID block.
+      TYPE_OFFSET = 1,
+
+      /// \brief Record code for the offsets of each decl.
+      ///
+      /// The DECL_OFFSET constant describes the record that occurs
+      /// within the block identified by DECL_OFFSETS_BLOCK_ID within
+      /// the AST block. The record itself is an array of offsets that
+      /// point into the declarations and types block (identified by
+      /// DECLTYPES_BLOCK_ID). The declaration ID is an index into this
+      /// record, after subtracting one to account for the use of
+      /// declaration ID 0 for a NULL declaration pointer. Index 0 is
+      /// reserved for the translation unit declaration.
+      DECL_OFFSET = 2,
+
+      /// \brief Record code for the table of offsets of each
+      /// identifier ID.
+      ///
+      /// The offset table contains offsets into the blob stored in
+      /// the IDENTIFIER_TABLE record. Each offset points to the
+      /// NULL-terminated string that corresponds to that identifier.
+      IDENTIFIER_OFFSET = 3,
+
+      /// \brief This is so that older clang versions, before the introduction
+      /// of the control block, can read and reject the newer PCH format.
+      /// *DON"T CHANGE THIS NUMBER*.
+      METADATA_OLD_FORMAT = 4,
+
+      /// \brief Record code for the identifier table.
+      ///
+      /// The identifier table is a simple blob that contains
+      /// NULL-terminated strings for all of the identifiers
+      /// referenced by the AST file. The IDENTIFIER_OFFSET table
+      /// contains the mapping from identifier IDs to the characters
+      /// in this blob. Note that the starting offsets of all of the
+      /// identifiers are odd, so that, when the identifier offset
+      /// table is loaded in, we can use the low bit to distinguish
+      /// between offsets (for unresolved identifier IDs) and
+      /// IdentifierInfo pointers (for already-resolved identifier
+      /// IDs).
+      IDENTIFIER_TABLE = 5,
+
+      /// \brief Record code for the array of external definitions.
+      ///
+      /// The AST file contains a list of all of the unnamed external
+      /// definitions present within the parsed headers, stored as an
+      /// array of declaration IDs. These external definitions will be
+      /// reported to the AST consumer after the AST file has been
+      /// read, since their presence can affect the semantics of the
+      /// program (e.g., for code generation).
+      EXTERNAL_DEFINITIONS = 6,
+
+      /// \brief Record code for the set of non-builtin, special
+      /// types.
+      ///
+      /// This record contains the type IDs for the various type nodes
+      /// that are constructed during semantic analysis (e.g.,
+      /// __builtin_va_list). The SPECIAL_TYPE_* constants provide
+      /// offsets into this record.
+      SPECIAL_TYPES = 7,
+
+      /// \brief Record code for the extra statistics we gather while
+      /// generating an AST file.
+      STATISTICS = 8,
+
+      /// \brief Record code for the array of tentative definitions.
+      TENTATIVE_DEFINITIONS = 9,
+
+      /// \brief Record code for the array of locally-scoped external
+      /// declarations.
+      LOCALLY_SCOPED_EXTERNAL_DECLS = 10,
+
+      /// \brief Record code for the table of offsets into the
+      /// Objective-C method pool.
+      SELECTOR_OFFSETS = 11,
+
+      /// \brief Record code for the Objective-C method pool,
+      METHOD_POOL = 12,
+
+      /// \brief The value of the next __COUNTER__ to dispense.
+      /// [PP_COUNTER_VALUE, Val]
+      PP_COUNTER_VALUE = 13,
+
+      /// \brief Record code for the table of offsets into the block
+      /// of source-location information.
+      SOURCE_LOCATION_OFFSETS = 14,
+
+      /// \brief Record code for the set of source location entries
+      /// that need to be preloaded by the AST reader.
+      ///
+      /// This set contains the source location entry for the
+      /// predefines buffer and for any file entries that need to be
+      /// preloaded.
+      SOURCE_LOCATION_PRELOADS = 15,
+
+      /// \brief Record code for the set of ext_vector type names.
+      EXT_VECTOR_DECLS = 16,
+      
+      /// \brief Record code for the array of unused file scoped decls.
+      UNUSED_FILESCOPED_DECLS = 17,
+      
+      /// \brief Record code for the table of offsets to entries in the
+      /// preprocessing record.
+      PPD_ENTITIES_OFFSETS = 18,
+
+      /// \brief Record code for the array of VTable uses.
+      VTABLE_USES = 19,
+
+      /// \brief Record code for the array of dynamic classes.
+      DYNAMIC_CLASSES = 20,
+
+      /// \brief Record code for referenced selector pool.
+      REFERENCED_SELECTOR_POOL = 21,
+
+      /// \brief Record code for an update to the TU's lexically contained
+      /// declarations.
+      TU_UPDATE_LEXICAL = 22,
+      
+      /// \brief Record code for the array describing the locations (in the
+      /// LOCAL_REDECLARATIONS record) of the redeclaration chains, indexed by
+      /// the first known ID.
+      LOCAL_REDECLARATIONS_MAP = 23,
+
+      /// \brief Record code for declarations that Sema keeps references of.
+      SEMA_DECL_REFS = 24,
+
+      /// \brief Record code for weak undeclared identifiers.
+      WEAK_UNDECLARED_IDENTIFIERS = 25,
+
+      /// \brief Record code for pending implicit instantiations.
+      PENDING_IMPLICIT_INSTANTIATIONS = 26,
+
+      /// \brief Record code for a decl replacement block.
+      ///
+      /// If a declaration is modified after having been deserialized, and then
+      /// written to a dependent AST file, its ID and offset must be added to
+      /// the replacement block.
+      DECL_REPLACEMENTS = 27,
+
+      /// \brief Record code for an update to a decl context's lookup table.
+      ///
+      /// In practice, this should only be used for the TU and namespaces.
+      UPDATE_VISIBLE = 28,
+
+      /// \brief Record for offsets of DECL_UPDATES records for declarations
+      /// that were modified after being deserialized and need updates.
+      DECL_UPDATE_OFFSETS = 29,
+
+      /// \brief Record of updates for a declaration that was modified after
+      /// being deserialized.
+      DECL_UPDATES = 30,
+      
+      /// \brief Record code for the table of offsets to CXXBaseSpecifier
+      /// sets.
+      CXX_BASE_SPECIFIER_OFFSETS = 31,
+
+      /// \brief Record code for \#pragma diagnostic mappings.
+      DIAG_PRAGMA_MAPPINGS = 32,
+
+      /// \brief Record code for special CUDA declarations.
+      CUDA_SPECIAL_DECL_REFS = 33,
+      
+      /// \brief Record code for header search information.
+      HEADER_SEARCH_TABLE = 34,
+
+      /// \brief Record code for floating point \#pragma options.
+      FP_PRAGMA_OPTIONS = 35,
+
+      /// \brief Record code for enabled OpenCL extensions.
+      OPENCL_EXTENSIONS = 36,
+
+      /// \brief The list of delegating constructor declarations.
+      DELEGATING_CTORS = 37,
+
+      /// \brief Record code for the set of known namespaces, which are used
+      /// for typo correction.
+      KNOWN_NAMESPACES = 38,
+
+      /// \brief Record code for the remapping information used to relate
+      /// loaded modules to the various offsets and IDs(e.g., source location 
+      /// offests, declaration and type IDs) that are used in that module to
+      /// refer to other modules.
+      MODULE_OFFSET_MAP = 39,
+
+      /// \brief Record code for the source manager line table information,
+      /// which stores information about \#line directives.
+      SOURCE_MANAGER_LINE_TABLE = 40,
+
+      /// \brief Record code for map of Objective-C class definition IDs to the 
+      /// ObjC categories in a module that are attached to that class.
+      OBJC_CATEGORIES_MAP = 41,
+
+      /// \brief Record code for a file sorted array of DeclIDs in a module.
+      FILE_SORTED_DECLS = 42,
+      
+      /// \brief Record code for an array of all of the (sub)modules that were
+      /// imported by the AST file.
+      IMPORTED_MODULES = 43,
+      
+      /// \brief Record code for the set of merged declarations in an AST file.
+      MERGED_DECLARATIONS = 44,
+      
+      /// \brief Record code for the array of redeclaration chains.
+      ///
+      /// This array can only be interpreted properly using the local 
+      /// redeclarations map.
+      LOCAL_REDECLARATIONS = 45,
+      
+      /// \brief Record code for the array of Objective-C categories (including
+      /// extensions).
+      ///
+      /// This array can only be interpreted properly using the Objective-C
+      /// categories map.
+      OBJC_CATEGORIES = 46,
+
+      /// \brief Record code for the table of offsets of each macro ID.
+      ///
+      /// The offset table contains offsets into the blob stored in
+      /// the preprocessor block. Each offset points to the corresponding
+      /// macro definition.
+      MACRO_OFFSET = 47,
+
+      /// \brief Record of updates for a macro that was modified after
+      /// being deserialized.
+      MACRO_UPDATES = 48
+    };
+
+    /// \brief Record types used within a source manager block.
+    enum SourceManagerRecordTypes {
+      /// \brief Describes a source location entry (SLocEntry) for a
+      /// file.
+      SM_SLOC_FILE_ENTRY = 1,
+      /// \brief Describes a source location entry (SLocEntry) for a
+      /// buffer.
+      SM_SLOC_BUFFER_ENTRY = 2,
+      /// \brief Describes a blob that contains the data for a buffer
+      /// entry. This kind of record always directly follows a
+      /// SM_SLOC_BUFFER_ENTRY record or a SM_SLOC_FILE_ENTRY with an
+      /// overridden buffer.
+      SM_SLOC_BUFFER_BLOB = 3,
+      /// \brief Describes a source location entry (SLocEntry) for a
+      /// macro expansion.
+      SM_SLOC_EXPANSION_ENTRY = 4
+    };
+
+    /// \brief Record types used within a preprocessor block.
+    enum PreprocessorRecordTypes {
+      // The macros in the PP section are a PP_MACRO_* instance followed by a
+      // list of PP_TOKEN instances for each token in the definition.
+
+      /// \brief An object-like macro definition.
+      /// [PP_MACRO_OBJECT_LIKE, IdentInfoID, SLoc, IsUsed]
+      PP_MACRO_OBJECT_LIKE = 1,
+
+      /// \brief A function-like macro definition.
+      /// [PP_MACRO_FUNCTION_LIKE, \<ObjectLikeStuff>, IsC99Varargs,
+      /// IsGNUVarars, NumArgs, ArgIdentInfoID* ]
+      PP_MACRO_FUNCTION_LIKE = 2,
+
+      /// \brief Describes one token.
+      /// [PP_TOKEN, SLoc, Length, IdentInfoID, Kind, Flags]
+      PP_TOKEN = 3
+    };
+
+    /// \brief Record types used within a preprocessor detail block.
+    enum PreprocessorDetailRecordTypes {
+      /// \brief Describes a macro expansion within the preprocessing record.
+      PPD_MACRO_EXPANSION = 0,
+      
+      /// \brief Describes a macro definition within the preprocessing record.
+      PPD_MACRO_DEFINITION = 1,
+      
+      /// \brief Describes an inclusion directive within the preprocessing
+      /// record.
+      PPD_INCLUSION_DIRECTIVE = 2
+    };
+    
+    /// \brief Record types used within a submodule description block.
+    enum SubmoduleRecordTypes {
+      /// \brief Metadata for submodules as a whole.
+      SUBMODULE_METADATA = 0,
+      /// \brief Defines the major attributes of a submodule, including its
+      /// name and parent.
+      SUBMODULE_DEFINITION = 1,
+      /// \brief Specifies the umbrella header used to create this module,
+      /// if any.
+      SUBMODULE_UMBRELLA_HEADER = 2,
+      /// \brief Specifies a header that falls into this (sub)module.
+      SUBMODULE_HEADER = 3,
+      /// \brief Specifies a top-level header that falls into this (sub)module.
+      SUBMODULE_TOPHEADER = 4,
+      /// \brief Specifies an umbrella directory.
+      SUBMODULE_UMBRELLA_DIR = 5,
+      /// \brief Specifies the submodules that are imported by this 
+      /// submodule.
+      SUBMODULE_IMPORTS = 6,
+      /// \brief Specifies the submodules that are re-exported from this 
+      /// submodule.
+      SUBMODULE_EXPORTS = 7,
+      /// \brief Specifies a required feature.
+      SUBMODULE_REQUIRES = 8,
+      /// \brief Specifies a header that has been explicitly excluded
+      /// from this submodule.
+      SUBMODULE_EXCLUDED_HEADER = 9
+    };
+
+    /// \brief Record types used within a comments block.
+    enum CommentRecordTypes {
+      COMMENTS_RAW_COMMENT = 0
+    };
+
+    /// \defgroup ASTAST AST file AST constants
+    ///
+    /// The constants in this group describe various components of the
+    /// abstract syntax tree within an AST file.
+    ///
+    /// @{
+
+    /// \brief Predefined type IDs.
+    ///
+    /// These type IDs correspond to predefined types in the AST
+    /// context, such as built-in types (int) and special place-holder
+    /// types (the \<overload> and \<dependent> type markers). Such
+    /// types are never actually serialized, since they will be built
+    /// by the AST context when it is created.
+    enum PredefinedTypeIDs {
+      /// \brief The NULL type.
+      PREDEF_TYPE_NULL_ID       = 0,
+      /// \brief The void type.
+      PREDEF_TYPE_VOID_ID       = 1,
+      /// \brief The 'bool' or '_Bool' type.
+      PREDEF_TYPE_BOOL_ID       = 2,
+      /// \brief The 'char' type, when it is unsigned.
+      PREDEF_TYPE_CHAR_U_ID     = 3,
+      /// \brief The 'unsigned char' type.
+      PREDEF_TYPE_UCHAR_ID      = 4,
+      /// \brief The 'unsigned short' type.
+      PREDEF_TYPE_USHORT_ID     = 5,
+      /// \brief The 'unsigned int' type.
+      PREDEF_TYPE_UINT_ID       = 6,
+      /// \brief The 'unsigned long' type.
+      PREDEF_TYPE_ULONG_ID      = 7,
+      /// \brief The 'unsigned long long' type.
+      PREDEF_TYPE_ULONGLONG_ID  = 8,
+      /// \brief The 'char' type, when it is signed.
+      PREDEF_TYPE_CHAR_S_ID     = 9,
+      /// \brief The 'signed char' type.
+      PREDEF_TYPE_SCHAR_ID      = 10,
+      /// \brief The C++ 'wchar_t' type.
+      PREDEF_TYPE_WCHAR_ID      = 11,
+      /// \brief The (signed) 'short' type.
+      PREDEF_TYPE_SHORT_ID      = 12,
+      /// \brief The (signed) 'int' type.
+      PREDEF_TYPE_INT_ID        = 13,
+      /// \brief The (signed) 'long' type.
+      PREDEF_TYPE_LONG_ID       = 14,
+      /// \brief The (signed) 'long long' type.
+      PREDEF_TYPE_LONGLONG_ID   = 15,
+      /// \brief The 'float' type.
+      PREDEF_TYPE_FLOAT_ID      = 16,
+      /// \brief The 'double' type.
+      PREDEF_TYPE_DOUBLE_ID     = 17,
+      /// \brief The 'long double' type.
+      PREDEF_TYPE_LONGDOUBLE_ID = 18,
+      /// \brief The placeholder type for overloaded function sets.
+      PREDEF_TYPE_OVERLOAD_ID   = 19,
+      /// \brief The placeholder type for dependent types.
+      PREDEF_TYPE_DEPENDENT_ID  = 20,
+      /// \brief The '__uint128_t' type.
+      PREDEF_TYPE_UINT128_ID    = 21,
+      /// \brief The '__int128_t' type.
+      PREDEF_TYPE_INT128_ID     = 22,
+      /// \brief The type of 'nullptr'.
+      PREDEF_TYPE_NULLPTR_ID    = 23,
+      /// \brief The C++ 'char16_t' type.
+      PREDEF_TYPE_CHAR16_ID     = 24,
+      /// \brief The C++ 'char32_t' type.
+      PREDEF_TYPE_CHAR32_ID     = 25,
+      /// \brief The ObjC 'id' type.
+      PREDEF_TYPE_OBJC_ID       = 26,
+      /// \brief The ObjC 'Class' type.
+      PREDEF_TYPE_OBJC_CLASS    = 27,
+      /// \brief The ObjC 'SEL' type.
+      PREDEF_TYPE_OBJC_SEL      = 28,
+      /// \brief The 'unknown any' placeholder type.
+      PREDEF_TYPE_UNKNOWN_ANY   = 29,
+      /// \brief The placeholder type for bound member functions.
+      PREDEF_TYPE_BOUND_MEMBER  = 30,
+      /// \brief The "auto" deduction type.
+      PREDEF_TYPE_AUTO_DEDUCT   = 31,
+      /// \brief The "auto &&" deduction type.
+      PREDEF_TYPE_AUTO_RREF_DEDUCT = 32,
+      /// \brief The OpenCL 'half' / ARM NEON __fp16 type.
+      PREDEF_TYPE_HALF_ID       = 33,
+      /// \brief ARC's unbridged-cast placeholder type.
+      PREDEF_TYPE_ARC_UNBRIDGED_CAST = 34,
+      /// \brief The pseudo-object placeholder type.
+      PREDEF_TYPE_PSEUDO_OBJECT = 35,
+      /// \brief The __va_list_tag placeholder type.
+      PREDEF_TYPE_VA_LIST_TAG = 36,
+      /// \brief The placeholder type for builtin functions.
+      PREDEF_TYPE_BUILTIN_FN = 37
+    };
+
+    /// \brief The number of predefined type IDs that are reserved for
+    /// the PREDEF_TYPE_* constants.
+    ///
+    /// Type IDs for non-predefined types will start at
+    /// NUM_PREDEF_TYPE_IDs.
+    const unsigned NUM_PREDEF_TYPE_IDS = 100;
+
+    /// \brief The number of allowed abbreviations in bits
+    const unsigned NUM_ALLOWED_ABBREVS_SIZE = 4;
+
+    /// \brief Record codes for each kind of type.
+    ///
+    /// These constants describe the type records that can occur within a
+    /// block identified by DECLTYPES_BLOCK_ID in the AST file. Each
+    /// constant describes a record for a specific type class in the
+    /// AST.
+    enum TypeCode {
+      /// \brief An ExtQualType record.
+      TYPE_EXT_QUAL                 = 1,
+      /// \brief A ComplexType record.
+      TYPE_COMPLEX                  = 3,
+      /// \brief A PointerType record.
+      TYPE_POINTER                  = 4,
+      /// \brief A BlockPointerType record.
+      TYPE_BLOCK_POINTER            = 5,
+      /// \brief An LValueReferenceType record.
+      TYPE_LVALUE_REFERENCE         = 6,
+      /// \brief An RValueReferenceType record.
+      TYPE_RVALUE_REFERENCE         = 7,
+      /// \brief A MemberPointerType record.
+      TYPE_MEMBER_POINTER           = 8,
+      /// \brief A ConstantArrayType record.
+      TYPE_CONSTANT_ARRAY           = 9,
+      /// \brief An IncompleteArrayType record.
+      TYPE_INCOMPLETE_ARRAY         = 10,
+      /// \brief A VariableArrayType record.
+      TYPE_VARIABLE_ARRAY           = 11,
+      /// \brief A VectorType record.
+      TYPE_VECTOR                   = 12,
+      /// \brief An ExtVectorType record.
+      TYPE_EXT_VECTOR               = 13,
+      /// \brief A FunctionNoProtoType record.
+      TYPE_FUNCTION_NO_PROTO        = 14,
+      /// \brief A FunctionProtoType record.
+      TYPE_FUNCTION_PROTO           = 15,
+      /// \brief A TypedefType record.
+      TYPE_TYPEDEF                  = 16,
+      /// \brief A TypeOfExprType record.
+      TYPE_TYPEOF_EXPR              = 17,
+      /// \brief A TypeOfType record.
+      TYPE_TYPEOF                   = 18,
+      /// \brief A RecordType record.
+      TYPE_RECORD                   = 19,
+      /// \brief An EnumType record.
+      TYPE_ENUM                     = 20,
+      /// \brief An ObjCInterfaceType record.
+      TYPE_OBJC_INTERFACE           = 21,
+      /// \brief An ObjCObjectPointerType record.
+      TYPE_OBJC_OBJECT_POINTER      = 22,
+      /// \brief a DecltypeType record.
+      TYPE_DECLTYPE                 = 23,
+      /// \brief An ElaboratedType record.
+      TYPE_ELABORATED               = 24,
+      /// \brief A SubstTemplateTypeParmType record.
+      TYPE_SUBST_TEMPLATE_TYPE_PARM = 25,
+      /// \brief An UnresolvedUsingType record.
+      TYPE_UNRESOLVED_USING         = 26,
+      /// \brief An InjectedClassNameType record.
+      TYPE_INJECTED_CLASS_NAME      = 27,
+      /// \brief An ObjCObjectType record.
+      TYPE_OBJC_OBJECT              = 28,
+      /// \brief An TemplateTypeParmType record.
+      TYPE_TEMPLATE_TYPE_PARM       = 29,
+      /// \brief An TemplateSpecializationType record.
+      TYPE_TEMPLATE_SPECIALIZATION  = 30,
+      /// \brief A DependentNameType record.
+      TYPE_DEPENDENT_NAME           = 31,
+      /// \brief A DependentTemplateSpecializationType record.
+      TYPE_DEPENDENT_TEMPLATE_SPECIALIZATION = 32,
+      /// \brief A DependentSizedArrayType record.
+      TYPE_DEPENDENT_SIZED_ARRAY    = 33,
+      /// \brief A ParenType record.
+      TYPE_PAREN                    = 34,
+      /// \brief A PackExpansionType record.
+      TYPE_PACK_EXPANSION           = 35,
+      /// \brief An AttributedType record.
+      TYPE_ATTRIBUTED               = 36,
+      /// \brief A SubstTemplateTypeParmPackType record.
+      TYPE_SUBST_TEMPLATE_TYPE_PARM_PACK = 37,
+      /// \brief A AutoType record.
+      TYPE_AUTO                  = 38,
+      /// \brief A UnaryTransformType record.
+      TYPE_UNARY_TRANSFORM       = 39,
+      /// \brief An AtomicType record.
+      TYPE_ATOMIC                = 40
+    };
+
+    /// \brief The type IDs for special types constructed by semantic
+    /// analysis.
+    ///
+    /// The constants in this enumeration are indices into the
+    /// SPECIAL_TYPES record.
+    enum SpecialTypeIDs {
+      /// \brief CFConstantString type
+      SPECIAL_TYPE_CF_CONSTANT_STRING          = 0,
+      /// \brief C FILE typedef type
+      SPECIAL_TYPE_FILE                        = 1,
+      /// \brief C jmp_buf typedef type
+      SPECIAL_TYPE_JMP_BUF                     = 2,
+      /// \brief C sigjmp_buf typedef type
+      SPECIAL_TYPE_SIGJMP_BUF                  = 3,
+      /// \brief Objective-C "id" redefinition type
+      SPECIAL_TYPE_OBJC_ID_REDEFINITION        = 4,
+      /// \brief Objective-C "Class" redefinition type
+      SPECIAL_TYPE_OBJC_CLASS_REDEFINITION     = 5,
+      /// \brief Objective-C "SEL" redefinition type
+      SPECIAL_TYPE_OBJC_SEL_REDEFINITION       = 6,
+      /// \brief C ucontext_t typedef type
+      SPECIAL_TYPE_UCONTEXT_T                  = 7
+    };
+    
+    /// \brief The number of special type IDs.
+    const unsigned NumSpecialTypeIDs = 8;
+
+    /// \brief Predefined declaration IDs.
+    ///
+    /// These declaration IDs correspond to predefined declarations in the AST
+    /// context, such as the NULL declaration ID. Such declarations are never
+    /// actually serialized, since they will be built by the AST context when 
+    /// it is created.
+    enum PredefinedDeclIDs {
+      /// \brief The NULL declaration.
+      PREDEF_DECL_NULL_ID       = 0,
+      
+      /// \brief The translation unit.
+      PREDEF_DECL_TRANSLATION_UNIT_ID = 1,
+      
+      /// \brief The Objective-C 'id' type.
+      PREDEF_DECL_OBJC_ID_ID = 2,
+      
+      /// \brief The Objective-C 'SEL' type.
+      PREDEF_DECL_OBJC_SEL_ID = 3,
+      
+      /// \brief The Objective-C 'Class' type.
+      PREDEF_DECL_OBJC_CLASS_ID = 4,
+            
+      /// \brief The Objective-C 'Protocol' type.
+      PREDEF_DECL_OBJC_PROTOCOL_ID = 5,
+      
+      /// \brief The signed 128-bit integer type.
+      PREDEF_DECL_INT_128_ID = 6,
+
+      /// \brief The unsigned 128-bit integer type.
+      PREDEF_DECL_UNSIGNED_INT_128_ID = 7,
+      
+      /// \brief The internal 'instancetype' typedef.
+      PREDEF_DECL_OBJC_INSTANCETYPE_ID = 8,
+
+      /// \brief The internal '__builtin_va_list' typedef.
+      PREDEF_DECL_BUILTIN_VA_LIST_ID = 9
+    };
+
+    /// \brief The number of declaration IDs that are predefined.
+    ///
+    /// For more information about predefined declarations, see the
+    /// \c PredefinedDeclIDs type and the PREDEF_DECL_*_ID constants.
+    const unsigned int NUM_PREDEF_DECL_IDS = 10;
+    
+    /// \brief Record codes for each kind of declaration.
+    ///
+    /// These constants describe the declaration records that can occur within
+    /// a declarations block (identified by DECLS_BLOCK_ID). Each
+    /// constant describes a record for a specific declaration class
+    /// in the AST.
+    enum DeclCode {
+      /// \brief A TypedefDecl record.
+      DECL_TYPEDEF = 51,
+      /// \brief A TypeAliasDecl record.
+      DECL_TYPEALIAS,
+      /// \brief An EnumDecl record.
+      DECL_ENUM,
+      /// \brief A RecordDecl record.
+      DECL_RECORD,
+      /// \brief An EnumConstantDecl record.
+      DECL_ENUM_CONSTANT,
+      /// \brief A FunctionDecl record.
+      DECL_FUNCTION,
+      /// \brief A ObjCMethodDecl record.
+      DECL_OBJC_METHOD,
+      /// \brief A ObjCInterfaceDecl record.
+      DECL_OBJC_INTERFACE,
+      /// \brief A ObjCProtocolDecl record.
+      DECL_OBJC_PROTOCOL,
+      /// \brief A ObjCIvarDecl record.
+      DECL_OBJC_IVAR,
+      /// \brief A ObjCAtDefsFieldDecl record.
+      DECL_OBJC_AT_DEFS_FIELD,
+      /// \brief A ObjCCategoryDecl record.
+      DECL_OBJC_CATEGORY,
+      /// \brief A ObjCCategoryImplDecl record.
+      DECL_OBJC_CATEGORY_IMPL,
+      /// \brief A ObjCImplementationDecl record.
+      DECL_OBJC_IMPLEMENTATION,
+      /// \brief A ObjCCompatibleAliasDecl record.
+      DECL_OBJC_COMPATIBLE_ALIAS,
+      /// \brief A ObjCPropertyDecl record.
+      DECL_OBJC_PROPERTY,
+      /// \brief A ObjCPropertyImplDecl record.
+      DECL_OBJC_PROPERTY_IMPL,
+      /// \brief A FieldDecl record.
+      DECL_FIELD,
+      /// \brief A VarDecl record.
+      DECL_VAR,
+      /// \brief An ImplicitParamDecl record.
+      DECL_IMPLICIT_PARAM,
+      /// \brief A ParmVarDecl record.
+      DECL_PARM_VAR,
+      /// \brief A FileScopeAsmDecl record.
+      DECL_FILE_SCOPE_ASM,
+      /// \brief A BlockDecl record.
+      DECL_BLOCK,
+      /// \brief A record that stores the set of declarations that are
+      /// lexically stored within a given DeclContext.
+      ///
+      /// The record itself is a blob that is an array of declaration IDs,
+      /// in the order in which those declarations were added to the
+      /// declaration context. This data is used when iterating over
+      /// the contents of a DeclContext, e.g., via
+      /// DeclContext::decls_begin() and DeclContext::decls_end().
+      DECL_CONTEXT_LEXICAL,
+      /// \brief A record that stores the set of declarations that are
+      /// visible from a given DeclContext.
+      ///
+      /// The record itself stores a set of mappings, each of which
+      /// associates a declaration name with one or more declaration
+      /// IDs. This data is used when performing qualified name lookup
+      /// into a DeclContext via DeclContext::lookup.
+      DECL_CONTEXT_VISIBLE,
+      /// \brief A LabelDecl record.
+      DECL_LABEL,
+      /// \brief A NamespaceDecl record.
+      DECL_NAMESPACE,
+      /// \brief A NamespaceAliasDecl record.
+      DECL_NAMESPACE_ALIAS,
+      /// \brief A UsingDecl record.
+      DECL_USING,
+      /// \brief A UsingShadowDecl record.
+      DECL_USING_SHADOW,
+      /// \brief A UsingDirecitveDecl record.
+      DECL_USING_DIRECTIVE,
+      /// \brief An UnresolvedUsingValueDecl record.
+      DECL_UNRESOLVED_USING_VALUE,
+      /// \brief An UnresolvedUsingTypenameDecl record.
+      DECL_UNRESOLVED_USING_TYPENAME,
+      /// \brief A LinkageSpecDecl record.
+      DECL_LINKAGE_SPEC,
+      /// \brief A CXXRecordDecl record.
+      DECL_CXX_RECORD,
+      /// \brief A CXXMethodDecl record.
+      DECL_CXX_METHOD,
+      /// \brief A CXXConstructorDecl record.
+      DECL_CXX_CONSTRUCTOR,
+      /// \brief A CXXDestructorDecl record.
+      DECL_CXX_DESTRUCTOR,
+      /// \brief A CXXConversionDecl record.
+      DECL_CXX_CONVERSION,
+      /// \brief An AccessSpecDecl record.
+      DECL_ACCESS_SPEC,
+
+      /// \brief A FriendDecl record.
+      DECL_FRIEND,
+      /// \brief A FriendTemplateDecl record.
+      DECL_FRIEND_TEMPLATE,
+      /// \brief A ClassTemplateDecl record.
+      DECL_CLASS_TEMPLATE,
+      /// \brief A ClassTemplateSpecializationDecl record.
+      DECL_CLASS_TEMPLATE_SPECIALIZATION,
+      /// \brief A ClassTemplatePartialSpecializationDecl record.
+      DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION,
+      /// \brief A FunctionTemplateDecl record.
+      DECL_FUNCTION_TEMPLATE,
+      /// \brief A TemplateTypeParmDecl record.
+      DECL_TEMPLATE_TYPE_PARM,
+      /// \brief A NonTypeTemplateParmDecl record.
+      DECL_NON_TYPE_TEMPLATE_PARM,
+      /// \brief A TemplateTemplateParmDecl record.
+      DECL_TEMPLATE_TEMPLATE_PARM,
+      /// \brief A TypeAliasTemplateDecl record.
+      DECL_TYPE_ALIAS_TEMPLATE,
+      /// \brief A StaticAssertDecl record.
+      DECL_STATIC_ASSERT,
+      /// \brief A record containing CXXBaseSpecifiers.
+      DECL_CXX_BASE_SPECIFIERS,
+      /// \brief A IndirectFieldDecl record.
+      DECL_INDIRECTFIELD,
+      /// \brief A NonTypeTemplateParmDecl record that stores an expanded
+      /// non-type template parameter pack.
+      DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK,
+      /// \brief A TemplateTemplateParmDecl record that stores an expanded
+      /// template template parameter pack.
+      DECL_EXPANDED_TEMPLATE_TEMPLATE_PARM_PACK,
+      /// \brief A ClassScopeFunctionSpecializationDecl record a class scope
+      /// function specialization. (Microsoft extension).
+      DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION,
+      /// \brief An ImportDecl recording a module import.
+      DECL_IMPORT
+    };
+
+    /// \brief Record codes for each kind of statement or expression.
+    ///
+    /// These constants describe the records that describe statements
+    /// or expressions. These records  occur within type and declarations
+    /// block, so they begin with record values of 100.  Each constant 
+    /// describes a record for a specific statement or expression class in the
+    /// AST.
+    enum StmtCode {
+      /// \brief A marker record that indicates that we are at the end
+      /// of an expression.
+      STMT_STOP = 100,
+      /// \brief A NULL expression.
+      STMT_NULL_PTR,
+      /// \brief A reference to a previously [de]serialized Stmt record.
+      STMT_REF_PTR,
+      /// \brief A NullStmt record.
+      STMT_NULL,
+      /// \brief A CompoundStmt record.
+      STMT_COMPOUND,
+      /// \brief A CaseStmt record.
+      STMT_CASE,
+      /// \brief A DefaultStmt record.
+      STMT_DEFAULT,
+      /// \brief A LabelStmt record.
+      STMT_LABEL,
+      /// \brief An AttributedStmt record.
+      STMT_ATTRIBUTED,
+      /// \brief An IfStmt record.
+      STMT_IF,
+      /// \brief A SwitchStmt record.
+      STMT_SWITCH,
+      /// \brief A WhileStmt record.
+      STMT_WHILE,
+      /// \brief A DoStmt record.
+      STMT_DO,
+      /// \brief A ForStmt record.
+      STMT_FOR,
+      /// \brief A GotoStmt record.
+      STMT_GOTO,
+      /// \brief An IndirectGotoStmt record.
+      STMT_INDIRECT_GOTO,
+      /// \brief A ContinueStmt record.
+      STMT_CONTINUE,
+      /// \brief A BreakStmt record.
+      STMT_BREAK,
+      /// \brief A ReturnStmt record.
+      STMT_RETURN,
+      /// \brief A DeclStmt record.
+      STMT_DECL,
+      /// \brief A GCC-style AsmStmt record.
+      STMT_GCCASM,
+      /// \brief A MS-style AsmStmt record.
+      STMT_MSASM,
+      /// \brief A PredefinedExpr record.
+      EXPR_PREDEFINED,
+      /// \brief A DeclRefExpr record.
+      EXPR_DECL_REF,
+      /// \brief An IntegerLiteral record.
+      EXPR_INTEGER_LITERAL,
+      /// \brief A FloatingLiteral record.
+      EXPR_FLOATING_LITERAL,
+      /// \brief An ImaginaryLiteral record.
+      EXPR_IMAGINARY_LITERAL,
+      /// \brief A StringLiteral record.
+      EXPR_STRING_LITERAL,
+      /// \brief A CharacterLiteral record.
+      EXPR_CHARACTER_LITERAL,
+      /// \brief A ParenExpr record.
+      EXPR_PAREN,
+      /// \brief A ParenListExpr record.
+      EXPR_PAREN_LIST,
+      /// \brief A UnaryOperator record.
+      EXPR_UNARY_OPERATOR,
+      /// \brief An OffsetOfExpr record.
+      EXPR_OFFSETOF,
+      /// \brief A SizefAlignOfExpr record.
+      EXPR_SIZEOF_ALIGN_OF,
+      /// \brief An ArraySubscriptExpr record.
+      EXPR_ARRAY_SUBSCRIPT,
+      /// \brief A CallExpr record.
+      EXPR_CALL,
+      /// \brief A MemberExpr record.
+      EXPR_MEMBER,
+      /// \brief A BinaryOperator record.
+      EXPR_BINARY_OPERATOR,
+      /// \brief A CompoundAssignOperator record.
+      EXPR_COMPOUND_ASSIGN_OPERATOR,
+      /// \brief A ConditionOperator record.
+      EXPR_CONDITIONAL_OPERATOR,
+      /// \brief An ImplicitCastExpr record.
+      EXPR_IMPLICIT_CAST,
+      /// \brief A CStyleCastExpr record.
+      EXPR_CSTYLE_CAST,
+      /// \brief A CompoundLiteralExpr record.
+      EXPR_COMPOUND_LITERAL,
+      /// \brief An ExtVectorElementExpr record.
+      EXPR_EXT_VECTOR_ELEMENT,
+      /// \brief An InitListExpr record.
+      EXPR_INIT_LIST,
+      /// \brief A DesignatedInitExpr record.
+      EXPR_DESIGNATED_INIT,
+      /// \brief An ImplicitValueInitExpr record.
+      EXPR_IMPLICIT_VALUE_INIT,
+      /// \brief A VAArgExpr record.
+      EXPR_VA_ARG,
+      /// \brief An AddrLabelExpr record.
+      EXPR_ADDR_LABEL,
+      /// \brief A StmtExpr record.
+      EXPR_STMT,
+      /// \brief A ChooseExpr record.
+      EXPR_CHOOSE,
+      /// \brief A GNUNullExpr record.
+      EXPR_GNU_NULL,
+      /// \brief A ShuffleVectorExpr record.
+      EXPR_SHUFFLE_VECTOR,
+      /// \brief BlockExpr
+      EXPR_BLOCK,
+      /// \brief A GenericSelectionExpr record.
+      EXPR_GENERIC_SELECTION,
+      /// \brief A PseudoObjectExpr record.
+      EXPR_PSEUDO_OBJECT,
+      /// \brief An AtomicExpr record.
+      EXPR_ATOMIC,
+
+      // Objective-C
+
+      /// \brief An ObjCStringLiteral record.
+      EXPR_OBJC_STRING_LITERAL,
+
+      EXPR_OBJC_BOXED_EXPRESSION,
+      EXPR_OBJC_ARRAY_LITERAL,
+      EXPR_OBJC_DICTIONARY_LITERAL,
+
+    
+      /// \brief An ObjCEncodeExpr record.
+      EXPR_OBJC_ENCODE,
+      /// \brief An ObjCSelectorExpr record.
+      EXPR_OBJC_SELECTOR_EXPR,
+      /// \brief An ObjCProtocolExpr record.
+      EXPR_OBJC_PROTOCOL_EXPR,
+      /// \brief An ObjCIvarRefExpr record.
+      EXPR_OBJC_IVAR_REF_EXPR,
+      /// \brief An ObjCPropertyRefExpr record.
+      EXPR_OBJC_PROPERTY_REF_EXPR,
+      /// \brief An ObjCSubscriptRefExpr record.
+      EXPR_OBJC_SUBSCRIPT_REF_EXPR,
+      /// \brief UNUSED
+      EXPR_OBJC_KVC_REF_EXPR,
+      /// \brief An ObjCMessageExpr record.
+      EXPR_OBJC_MESSAGE_EXPR,
+      /// \brief An ObjCIsa Expr record.
+      EXPR_OBJC_ISA,
+      /// \brief An ObjCIndirectCopyRestoreExpr record.
+      EXPR_OBJC_INDIRECT_COPY_RESTORE,
+
+      /// \brief An ObjCForCollectionStmt record.
+      STMT_OBJC_FOR_COLLECTION,
+      /// \brief An ObjCAtCatchStmt record.
+      STMT_OBJC_CATCH,
+      /// \brief An ObjCAtFinallyStmt record.
+      STMT_OBJC_FINALLY,
+      /// \brief An ObjCAtTryStmt record.
+      STMT_OBJC_AT_TRY,
+      /// \brief An ObjCAtSynchronizedStmt record.
+      STMT_OBJC_AT_SYNCHRONIZED,
+      /// \brief An ObjCAtThrowStmt record.
+      STMT_OBJC_AT_THROW,
+      /// \brief An ObjCAutoreleasePoolStmt record.
+      STMT_OBJC_AUTORELEASE_POOL,
+      /// \brief A ObjCBoolLiteralExpr record.
+      EXPR_OBJC_BOOL_LITERAL,
+
+      // C++
+      
+      /// \brief A CXXCatchStmt record.
+      STMT_CXX_CATCH,
+      /// \brief A CXXTryStmt record.
+      STMT_CXX_TRY,
+      /// \brief A CXXForRangeStmt record.
+      STMT_CXX_FOR_RANGE,
+
+      /// \brief A CXXOperatorCallExpr record.
+      EXPR_CXX_OPERATOR_CALL,
+      /// \brief A CXXMemberCallExpr record.
+      EXPR_CXX_MEMBER_CALL,
+      /// \brief A CXXConstructExpr record.
+      EXPR_CXX_CONSTRUCT,
+      /// \brief A CXXTemporaryObjectExpr record.
+      EXPR_CXX_TEMPORARY_OBJECT,
+      /// \brief A CXXStaticCastExpr record.
+      EXPR_CXX_STATIC_CAST,
+      /// \brief A CXXDynamicCastExpr record.
+      EXPR_CXX_DYNAMIC_CAST,
+      /// \brief A CXXReinterpretCastExpr record.
+      EXPR_CXX_REINTERPRET_CAST,
+      /// \brief A CXXConstCastExpr record.
+      EXPR_CXX_CONST_CAST,
+      /// \brief A CXXFunctionalCastExpr record.
+      EXPR_CXX_FUNCTIONAL_CAST,
+      /// \brief A UserDefinedLiteral record.
+      EXPR_USER_DEFINED_LITERAL,
+      /// \brief A CXXBoolLiteralExpr record.
+      EXPR_CXX_BOOL_LITERAL,
+      EXPR_CXX_NULL_PTR_LITERAL,  // CXXNullPtrLiteralExpr
+      EXPR_CXX_TYPEID_EXPR,       // CXXTypeidExpr (of expr).
+      EXPR_CXX_TYPEID_TYPE,       // CXXTypeidExpr (of type).
+      EXPR_CXX_THIS,              // CXXThisExpr
+      EXPR_CXX_THROW,             // CXXThrowExpr
+      EXPR_CXX_DEFAULT_ARG,       // CXXDefaultArgExpr
+      EXPR_CXX_BIND_TEMPORARY,    // CXXBindTemporaryExpr
+
+      EXPR_CXX_SCALAR_VALUE_INIT, // CXXScalarValueInitExpr
+      EXPR_CXX_NEW,               // CXXNewExpr
+      EXPR_CXX_DELETE,            // CXXDeleteExpr
+      EXPR_CXX_PSEUDO_DESTRUCTOR, // CXXPseudoDestructorExpr
+      
+      EXPR_EXPR_WITH_CLEANUPS,    // ExprWithCleanups
+      
+      EXPR_CXX_DEPENDENT_SCOPE_MEMBER,   // CXXDependentScopeMemberExpr
+      EXPR_CXX_DEPENDENT_SCOPE_DECL_REF, // DependentScopeDeclRefExpr
+      EXPR_CXX_UNRESOLVED_CONSTRUCT,     // CXXUnresolvedConstructExpr
+      EXPR_CXX_UNRESOLVED_MEMBER,        // UnresolvedMemberExpr
+      EXPR_CXX_UNRESOLVED_LOOKUP,        // UnresolvedLookupExpr
+
+      EXPR_CXX_UNARY_TYPE_TRAIT,  // UnaryTypeTraitExpr
+      EXPR_CXX_EXPRESSION_TRAIT,  // ExpressionTraitExpr
+      EXPR_CXX_NOEXCEPT,          // CXXNoexceptExpr
+
+      EXPR_OPAQUE_VALUE,          // OpaqueValueExpr
+      EXPR_BINARY_CONDITIONAL_OPERATOR,  // BinaryConditionalOperator
+      EXPR_BINARY_TYPE_TRAIT,     // BinaryTypeTraitExpr
+      EXPR_TYPE_TRAIT,            // TypeTraitExpr
+      EXPR_ARRAY_TYPE_TRAIT,      // ArrayTypeTraitIntExpr
+      
+      EXPR_PACK_EXPANSION,        // PackExpansionExpr
+      EXPR_SIZEOF_PACK,           // SizeOfPackExpr
+      EXPR_SUBST_NON_TYPE_TEMPLATE_PARM, // SubstNonTypeTemplateParmExpr
+      EXPR_SUBST_NON_TYPE_TEMPLATE_PARM_PACK,// SubstNonTypeTemplateParmPackExpr
+      EXPR_FUNCTION_PARM_PACK,    // FunctionParmPackExpr
+      EXPR_MATERIALIZE_TEMPORARY, // MaterializeTemporaryExpr
+      
+      // CUDA
+      EXPR_CUDA_KERNEL_CALL,       // CUDAKernelCallExpr      
+
+      // OpenCL
+      EXPR_ASTYPE,                 // AsTypeExpr
+
+      // Microsoft
+      EXPR_CXX_UUIDOF_EXPR,       // CXXUuidofExpr (of expr).
+      EXPR_CXX_UUIDOF_TYPE,       // CXXUuidofExpr (of type).
+      STMT_SEH_EXCEPT,            // SEHExceptStmt
+      STMT_SEH_FINALLY,           // SEHFinallyStmt
+      STMT_SEH_TRY,               // SEHTryStmt
+      
+      // ARC
+      EXPR_OBJC_BRIDGED_CAST,     // ObjCBridgedCastExpr
+      
+      STMT_MS_DEPENDENT_EXISTS,   // MSDependentExistsStmt
+      EXPR_LAMBDA                 // LambdaExpr
+    };
+
+    /// \brief The kinds of designators that can occur in a
+    /// DesignatedInitExpr.
+    enum DesignatorTypes {
+      /// \brief Field designator where only the field name is known.
+      DESIG_FIELD_NAME  = 0,
+      /// \brief Field designator where the field has been resolved to
+      /// a declaration.
+      DESIG_FIELD_DECL  = 1,
+      /// \brief Array designator.
+      DESIG_ARRAY       = 2,
+      /// \brief GNU array range designator.
+      DESIG_ARRAY_RANGE = 3
+    };
+
+    /// \brief The different kinds of data that can occur in a
+    /// CtorInitializer.
+    enum CtorInitializerType {
+      CTOR_INITIALIZER_BASE,
+      CTOR_INITIALIZER_DELEGATING,
+      CTOR_INITIALIZER_MEMBER,
+      CTOR_INITIALIZER_INDIRECT_MEMBER
+    };
+
+    /// \brief Describes the redeclarations of a declaration.
+    struct LocalRedeclarationsInfo {
+      DeclID FirstID;      // The ID of the first declaration
+      unsigned Offset;     // Offset into the array of redeclaration chains.
+      
+      friend bool operator<(const LocalRedeclarationsInfo &X,
+                            const LocalRedeclarationsInfo &Y) {
+        return X.FirstID < Y.FirstID;
+      }
+      
+      friend bool operator>(const LocalRedeclarationsInfo &X,
+                            const LocalRedeclarationsInfo &Y) {
+        return X.FirstID > Y.FirstID;
+      }
+      
+      friend bool operator<=(const LocalRedeclarationsInfo &X,
+                             const LocalRedeclarationsInfo &Y) {
+        return X.FirstID <= Y.FirstID;
+      }
+      
+      friend bool operator>=(const LocalRedeclarationsInfo &X,
+                             const LocalRedeclarationsInfo &Y) {
+        return X.FirstID >= Y.FirstID;
+      }
+    };
+
+    /// \brief Describes the categories of an Objective-C class.
+    struct ObjCCategoriesInfo {
+      DeclID DefinitionID; // The ID of the definition
+      unsigned Offset;     // Offset into the array of category lists.
+      
+      friend bool operator<(const ObjCCategoriesInfo &X,
+                            const ObjCCategoriesInfo &Y) {
+        return X.DefinitionID < Y.DefinitionID;
+      }
+      
+      friend bool operator>(const ObjCCategoriesInfo &X,
+                            const ObjCCategoriesInfo &Y) {
+        return X.DefinitionID > Y.DefinitionID;
+      }
+      
+      friend bool operator<=(const ObjCCategoriesInfo &X,
+                             const ObjCCategoriesInfo &Y) {
+        return X.DefinitionID <= Y.DefinitionID;
+      }
+      
+      friend bool operator>=(const ObjCCategoriesInfo &X,
+                             const ObjCCategoriesInfo &Y) {
+        return X.DefinitionID >= Y.DefinitionID;
+      }
+    };
+
+    /// @}
+  }
+} // end namespace clang
+
+#endif