gcc/cp/lex.h

   1 /* Define constants and variables for communication with parse.y.
   2    Copyright (C) 1987, 1992, 1993 Free Software Foundation, Inc.
   3    Hacked by Michael Tiemann (tiemann@cygnus.com)
   4    and by Brendan Kehoe (brendan@cygnus.com).
   5
   6 This file is part of GNU CC.
   7
   8 GNU CC is distributed in the hope that it will be useful,
   9 but WITHOUT ANY WARRANTY.  No author or distributor
  10 accepts responsibility to anyone for the consequences of using it
  11 or for whether it serves any particular purpose or works at all,
  12 unless he says so in writing.  Refer to the GNU CC General Public
  13 License for full details.
  14
  15 Everyone is granted permission to copy, modify and redistribute
  16 GNU CC, but only under the conditions described in the
  17 GNU CC General Public License.   A copy of this license is
  18 supposed to have been given to you along with GNU CC so you
  19 can know your rights and responsibilities.  It should be in a
  20 file named COPYING.  Among other things, the copyright notice
  21 and this notice must be preserved on all copies.  */
  22
  23
  24
  25 enum rid
  26 {
  27   RID_UNUSED,
  28   RID_INT,
  29   RID_BOOL,
  30   RID_CHAR,
  31   RID_WCHAR,
  32   RID_FLOAT,
  33   RID_DOUBLE,
  34   RID_VOID,
  35
  36   /* C++ extension */
  37   RID_CLASS,
  38   RID_RECORD,
  39   RID_UNION,
  40   RID_ENUM,
  41   RID_LONGLONG,
  42
  43   /* This is where grokdeclarator starts its search when setting the specbits.
  44      The first seven are in the order of most frequently used, as found
  45      building libg++.  */
  46
  47   RID_EXTERN,
  48   RID_CONST,
  49   RID_LONG,
  50   RID_TYPEDEF,
  51   RID_UNSIGNED,
  52   RID_SHORT,
  53   RID_INLINE,
  54
  55   RID_STATIC,
  56
  57   RID_REGISTER,
  58   RID_VOLATILE,
  59   RID_FRIEND,
  60   RID_VIRTUAL,
  61   RID_PUBLIC,
  62   RID_PRIVATE,
  63   RID_PROTECTED,
  64   RID_SIGNED,
  65   RID_EXCEPTION,
  66   RID_RAISES,
  67   RID_AUTO,
  68   RID_MUTABLE,
  69   RID_TEMPLATE,
  70   RID_SIGNATURE,
  71   /* Before adding enough to get up to 64, the RIDBIT_* macros
  72      will have to be changed a little. */
  73   RID_MAX
  74 };
  75
  76 #define NORID RID_UNUSED
  77
  78 #define RID_FIRST_MODIFIER RID_EXTERN
  79
  80 /* The type that can represent all values of RIDBIT.  */
  81 /* We assume that we can stick in at least 32 bits into this. */
  82 typedef struct { unsigned long idata[2]; }
  83      RID_BIT_TYPE;
  84
  85 /* Be careful, all these modify N twice. */
  86 #define RIDBIT_SETP(N, V) (((unsigned long)1 << (int) ((N)%32))               \
  87                             & (V).idata[(N)/32])
  88 #define RIDBIT_NOTSETP(NN, VV) (! RIDBIT_SETP (NN, VV))
  89 #define RIDBIT_SET(N, V) do {                                                 \
  90                                 (V).idata[(N)/32]                             \
  91                                   |= ((unsigned long)1 << (int) ((N)%32));    \
  92                               } while (0)
  93 #define RIDBIT_RESET(N, V) do {                                               \
  94                                   (V).idata[(N)/32]                           \
  95                                     &= ~((unsigned long)1 << (int) ((N)%32)); \
  96                                 } while (0)
  97 #define RIDBIT_RESET_ALL(V) do {                                              \
  98                                    (V).idata[0] = 0;                          \
  99                                    (V).idata[1] = 0;                          \
 100                                  } while (0)
 101 #define RIDBIT_ANY_SET(V) ((V).idata[0] || (V).idata[1])
 102
 103 /* The elements of `ridpointers' are identifier nodes
 104    for the reserved type names and storage classes.
 105    It is indexed by a RID_... value.  */
 106 extern tree ridpointers[(int) RID_MAX];
 107
 108 /* the declaration found for the last IDENTIFIER token read in.
 109    yylex must look this up to detect typedefs, which get token type TYPENAME,
 110    so it is left around in case the identifier is not a typedef but is
 111    used in a context which makes it a reference to a variable.  */
 112 extern tree lastiddecl;
 113
 114 extern char *token_buffer;      /* Pointer to token buffer.  */
 115
 116 /* Back-door communication channel to the lexer.  */
 117 extern int looking_for_typename;
 118
 119 /* Tell the lexer where to look for names.  */
 120 extern tree got_scope;
 121
 122 /* Pending language change.
 123    Positive is push count, negative is pop count.  */
 124 extern int pending_lang_change;
 125
 126 extern tree make_pointer_declarator (), make_reference_declarator ();
 127 extern void reinit_parse_for_function ();
 128 extern void reinit_parse_for_method ();
 129 extern int yylex ();