include/clang/Frontend/PCHBitCodes.h - fp2-dev/platform/external/clang - Gitiles

 //===- PCHBitCodes.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 precompiled header 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 "llvm/Bitcode/BitCodes.h"
 #include "llvm/Support/DataTypes.h"

 namespace clang {
   namespace pch {
     /// \brief An ID number that refers to a declaration in a PCH file.
     ///
     /// The ID numbers of types are consecutive (in order of
     /// discovery) and start at 2. 0 is reserved for NULL, and 1 is
     /// reserved for the translation unit declaration.
     typedef uint32_t DeclID;

     /// \brief An ID number that refers to a type in a PCH 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 An ID number that refers to an identifier in a PCH
     /// file.
     typedef uint32_t IdentID;

     /// \brief Describes the various kinds of blocks that occur within
     /// a PCH file.
     enum BlockIDs {
       /// \brief The PCH block, which acts as a container around the
       /// full PCH block.
       PCH_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 used within the PCH file.
       TYPES_BLOCK_ID,

       /// \brief The block containing the definitions of all of the
       /// declarations stored in the PCH file.
       DECLS_BLOCK_ID
     };

     /// \brief Record types that occur within the PCH block itself.
     enum PCHRecordTypes {
       /// \brief Offset of each type within the types block.
       ///
       /// The TYPE_OFFSET constant describes the record that occurs
       /// within the block identified by TYPE_OFFSETS_BLOCK_ID within
       /// the PCH file. The record itself is an array of offsets that
       /// point into the types block (identified by TYPES_BLOCK_ID in
       /// the PCH file). 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 TYPES_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 identifier by DECL_OFFSETS_BLOCK_ID within
       /// the PCH file. The record itself is an array of offsets that
       /// point into the declarations block (identified by
       /// DECLS_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 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 triple used to build the
       /// PCH file.
       TARGET_TRIPLE = 4,

       /// \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 = 5,

       /// \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 PCH 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 = 6,

       /// \brief Record code for the array of external definitions.
       ///
       /// The PCH file contains a list of all of the 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 PCH file has been
       /// read, since their presence can affect the semantics of the
       /// program (e.g., for code generation).
       EXTERNAL_DEFINITIONS = 7
     };

     /// \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.
       SM_SLOC_BUFFER_BLOB = 3,
       /// \brief Describes a source location entry (SLocEntry) for a
       /// macro instantiation.
       SM_SLOC_INSTANTIATION_ENTRY = 4,
       /// \brief Describes the SourceManager's line table, with
       /// information about #line directives.
       SM_LINE_TABLE = 5
     };

     /// \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 The value of the next __COUNTER__ to dispense.
       /// [PP_COUNTER_VALUE, Val]
       PP_COUNTER_VALUE = 4
     };


     /// \defgroup PCHAST Precompiled header AST constants
     ///
     /// The constants in this group describe various components of the
     /// abstract syntax tree within a precompiled header.
     ///
     /// @{

     /// \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 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 Record codes for each kind of type.
     ///
     /// These constants describe the records that can occur within a
     /// block identified by TYPES_BLOCK_ID in the PCH 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 FixedWidthIntType record.
       TYPE_FIXED_WIDTH_INT          = 2,
       /// \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 ObjCQualifiedInterfaceType record.
       TYPE_OBJC_QUALIFIED_INTERFACE = 22,
       /// \brief An ObjCQualifiedIdType record.
       TYPE_OBJC_QUALIFIED_ID        = 23,
       /// \brief An ObjCQualifiedClassType record.
       TYPE_OBJC_QUALIFIED_CLASS     = 24
     };

     /// \brief Record codes for each kind of declaration.
     ///
     /// These constants describe the 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 Attributes attached to a declaration.
       DECL_ATTR = 1,
       /// \brief A TranslationUnitDecl record.
       DECL_TRANSLATION_UNIT,
       /// \brief A TypedefDecl record.
       DECL_TYPEDEF,
       /// \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 FieldDecl record.
       DECL_FIELD,
       /// \brief A VarDecl record.
       DECL_VAR,
       /// \brief A ParmVarDecl record.
       DECL_PARM_VAR,
       /// \brief An OriginalParmVarDecl record.
       DECL_ORIGINAL_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 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()/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 Record codes for each kind of statement or expression.
     ///
     /// These constants describe the records that describe statements
     /// or expressions. These records can occur within either the type
     /// or declaration blocks, 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,
       /// \brief A NULL expression.
       STMT_NULL_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 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 ContinueStmt record.
       STMT_CONTINUE,
       /// \brief A BreakStmt record.
       STMT_BREAK,
       /// \brief A ReturnStmt record.
       STMT_RETURN,
       /// \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 UnaryOperator record.
       EXPR_UNARY_OPERATOR,
       /// \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,
       // FIXME: AddrLabelExpr
       // FIXME: StmtExpr
       /// \brief A TypesCompatibleExpr record.
       EXPR_TYPES_COMPATIBLE,
       /// \brief A ChooseExpr record.
       EXPR_CHOOSE,
       /// \brief A GNUNullExpr record.
       EXPR_GNU_NULL,
       /// \brief A ShuffleVectorExpr record.
       EXPR_SHUFFLE_VECTOR,
       /// FIXME: BlockExpr
       EXPR_BLOCK_DECL_REF
     };

     /// \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
     };

     /// @}
   }
 } // end namespace clang

 #endif
	//===- PCHBitCodes.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 precompiled header 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 "llvm/Bitcode/BitCodes.h"
	#include "llvm/Support/DataTypes.h"

	namespace clang {
	namespace pch {
	/// \brief An ID number that refers to a declaration in a PCH file.
	///
	/// The ID numbers of types are consecutive (in order of
	/// discovery) and start at 2. 0 is reserved for NULL, and 1 is
	/// reserved for the translation unit declaration.
	typedef uint32_t DeclID;

	/// \brief An ID number that refers to a type in a PCH 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 An ID number that refers to an identifier in a PCH
	/// file.
	typedef uint32_t IdentID;

	/// \brief Describes the various kinds of blocks that occur within
	/// a PCH file.
	enum BlockIDs {
	/// \brief The PCH block, which acts as a container around the
	/// full PCH block.
	PCH_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 used within the PCH file.
	TYPES_BLOCK_ID,

	/// \brief The block containing the definitions of all of the
	/// declarations stored in the PCH file.
	DECLS_BLOCK_ID
	};

	/// \brief Record types that occur within the PCH block itself.
	enum PCHRecordTypes {
	/// \brief Offset of each type within the types block.
	///
	/// The TYPE_OFFSET constant describes the record that occurs
	/// within the block identified by TYPE_OFFSETS_BLOCK_ID within
	/// the PCH file. The record itself is an array of offsets that
	/// point into the types block (identified by TYPES_BLOCK_ID in
	/// the PCH file). 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 TYPES_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 identifier by DECL_OFFSETS_BLOCK_ID within
	/// the PCH file. The record itself is an array of offsets that
	/// point into the declarations block (identified by
	/// DECLS_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 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 triple used to build the
	/// PCH file.
	TARGET_TRIPLE = 4,

	/// \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 = 5,

	/// \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 PCH 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 = 6,

	/// \brief Record code for the array of external definitions.
	///
	/// The PCH file contains a list of all of the 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 PCH file has been
	/// read, since their presence can affect the semantics of the
	/// program (e.g., for code generation).
	EXTERNAL_DEFINITIONS = 7
	};

	/// \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.
	SM_SLOC_BUFFER_BLOB = 3,
	/// \brief Describes a source location entry (SLocEntry) for a
	/// macro instantiation.
	SM_SLOC_INSTANTIATION_ENTRY = 4,
	/// \brief Describes the SourceManager's line table, with
	/// information about #line directives.
	SM_LINE_TABLE = 5
	};

	/// \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 The value of the next __COUNTER__ to dispense.
	/// [PP_COUNTER_VALUE, Val]
	PP_COUNTER_VALUE = 4
	};


	/// \defgroup PCHAST Precompiled header AST constants
	///
	/// The constants in this group describe various components of the
	/// abstract syntax tree within a precompiled header.
	///
	/// @{

	/// \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 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 Record codes for each kind of type.
	///
	/// These constants describe the records that can occur within a
	/// block identified by TYPES_BLOCK_ID in the PCH 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 FixedWidthIntType record.
	TYPE_FIXED_WIDTH_INT = 2,
	/// \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 ObjCQualifiedInterfaceType record.
	TYPE_OBJC_QUALIFIED_INTERFACE = 22,
	/// \brief An ObjCQualifiedIdType record.
	TYPE_OBJC_QUALIFIED_ID = 23,
	/// \brief An ObjCQualifiedClassType record.
	TYPE_OBJC_QUALIFIED_CLASS = 24
	};

	/// \brief Record codes for each kind of declaration.
	///
	/// These constants describe the 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 Attributes attached to a declaration.
	DECL_ATTR = 1,
	/// \brief A TranslationUnitDecl record.
	DECL_TRANSLATION_UNIT,
	/// \brief A TypedefDecl record.
	DECL_TYPEDEF,
	/// \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 FieldDecl record.
	DECL_FIELD,
	/// \brief A VarDecl record.
	DECL_VAR,
	/// \brief A ParmVarDecl record.
	DECL_PARM_VAR,
	/// \brief An OriginalParmVarDecl record.
	DECL_ORIGINAL_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 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()/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 Record codes for each kind of statement or expression.
	///
	/// These constants describe the records that describe statements
	/// or expressions. These records can occur within either the type
	/// or declaration blocks, 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,
	/// \brief A NULL expression.
	STMT_NULL_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 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 ContinueStmt record.
	STMT_CONTINUE,
	/// \brief A BreakStmt record.
	STMT_BREAK,
	/// \brief A ReturnStmt record.
	STMT_RETURN,
	/// \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 UnaryOperator record.
	EXPR_UNARY_OPERATOR,
	/// \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,
	// FIXME: AddrLabelExpr
	// FIXME: StmtExpr
	/// \brief A TypesCompatibleExpr record.
	EXPR_TYPES_COMPATIBLE,
	/// \brief A ChooseExpr record.
	EXPR_CHOOSE,
	/// \brief A GNUNullExpr record.
	EXPR_GNU_NULL,
	/// \brief A ShuffleVectorExpr record.
	EXPR_SHUFFLE_VECTOR,
	/// FIXME: BlockExpr
	EXPR_BLOCK_DECL_REF
	};

	/// \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
	};

	/// @}
	}
	} // end namespace clang

	#endif