path: root/include/clang/Parse/DeclSpec.h

//===--- SemaDeclSpec.h - Declaration Specifier Semantic Analys -*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines interfaces used for Declaration Specifiers and Declarators.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_CLANG_PARSE_DECLSPEC_H
#define LLVM_CLANG_PARSE_DECLSPEC_H

#include "clang/Parse/AttributeList.h"
#include "clang/Lex/Token.h"
#include "clang/Basic/OperatorKinds.h"
#include "llvm/ADT/SmallVector.h"

namespace clang {
  class LangOptions;
  class Diagnostic;
  class IdentifierInfo;
  class Preprocessor;
  class Declarator;
  struct TemplateIdAnnotation;
  
/// DeclSpec - This class captures information about "declaration specifiers",
/// which encompasses storage-class-specifiers, type-specifiers,
/// type-qualifiers, and function-specifiers.
class DeclSpec {
public:
  // storage-class-specifier
  enum SCS {
    SCS_unspecified,
    SCS_typedef,
    SCS_extern,
    SCS_static,
    SCS_auto,
    SCS_register,
    SCS_private_extern,
    SCS_mutable
  };

  // type-specifier
  enum TSW {
    TSW_unspecified,
    TSW_short,
    TSW_long,
    TSW_longlong
  };

  enum TSC {
    TSC_unspecified,
    TSC_imaginary,
    TSC_complex
  };

  enum TSS {
    TSS_unspecified,
    TSS_signed,
    TSS_unsigned
  };

  enum TST {
    TST_unspecified,
    TST_void,
    TST_char,
    TST_wchar,        // C++ wchar_t
    TST_char16,       // C++0x char16_t
    TST_char32,       // C++0x char32_t
    TST_int,
    TST_float,
    TST_double,
    TST_bool,         // _Bool
    TST_decimal32,    // _Decimal32
    TST_decimal64,    // _Decimal64
    TST_decimal128,   // _Decimal128
    TST_enum,
    TST_union,
    TST_struct,
    TST_class,        // C++ class type
    TST_typename,     // Typedef, C++ class-name or enum name, etc.
    TST_typeofType,
    TST_typeofExpr,
    TST_decltype,     // C++0x decltype
    TST_auto,         // C++0x auto
    TST_error         // erroneous type
  };

  // type-qualifiers
  enum TQ {   // NOTE: These flags must be kept in sync with Qualifiers::TQ.
    TQ_unspecified = 0,
    TQ_const       = 1,
    TQ_restrict    = 2,
    TQ_volatile    = 4
  };

  /// ParsedSpecifiers - Flags to query which specifiers were applied.  This is
  /// returned by getParsedSpecifiers.
  enum ParsedSpecifiers {
    PQ_None                  = 0,
    PQ_StorageClassSpecifier = 1,
    PQ_TypeSpecifier         = 2,
    PQ_TypeQualifier         = 4,
    PQ_FunctionSpecifier     = 8
  };

private:

  // storage-class-specifier
  /*SCS*/unsigned StorageClassSpec : 3;
  bool SCS_thread_specified : 1;

  // type-specifier
  /*TSW*/unsigned TypeSpecWidth : 2;
  /*TSC*/unsigned TypeSpecComplex : 2;
  /*TSS*/unsigned TypeSpecSign : 2;
  /*TST*/unsigned TypeSpecType : 5;
  bool TypeSpecOwned : 1;

  // type-qualifiers
  unsigned TypeQualifiers : 3;  // Bitwise OR of TQ.

  // function-specifier
  bool FS_inline_specified : 1;
  bool FS_virtual_specified : 1;
  bool FS_explicit_specified : 1;

  // friend-specifier
  bool Friend_specified