gcc/cp/lex.h

   1 /* Define constants and variables for communication with parse.y.
   2    Copyright (C) 1987, 92-97, 1998 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   RID_FIRST_MODIFIER,
  47
  48   RID_EXTERN = RID_FIRST_MODIFIER,
  49   RID_CONST,
  50   RID_LONG,
  51   RID_TYPEDEF,
  52   RID_UNSIGNED,
  53   RID_SHORT,
  54   RID_INLINE,
  55
  56   RID_STATIC,
  57
  58   RID_REGISTER,
  59   RID_VOLATILE,
  60   RID_FRIEND,
  61   RID_VIRTUAL,
  62   RID_EXPLICIT,
  63   RID_EXPORT,
  64   RID_SIGNED,
  65   RID_AUTO,
  66   RID_MUTABLE,
  67   RID_COMPLEX,
  68   RID_RESTRICT,
  69
  70   RID_LAST_MODIFIER = RID_RESTRICT,
  71   /* This is where grokdeclarator ends its search when setting the
  72      specbits.  */
  73
  74   RID_PUBLIC,
  75   RID_PRIVATE,
  76   RID_PROTECTED,
  77   RID_EXCEPTION,
  78   RID_TEMPLATE,
  79   RID_NULL,
  80   /* Before adding enough to get up to 64, the RIDBIT_* macros
  81      will have to be changed a little.  */
  82   RID_MAX
  83 };
  84
  85 /* The type that can represent all values of RIDBIT.  */
  86 /* We assume that we can stick in at least 32 bits into this.  */
  87 typedef struct { unsigned long idata[2]; }
  88      RID_BIT_TYPE;
  89
  90 /* Be careful, all these modify N twice.  */
  91 #define RIDBIT_SETP(N, V) (((unsigned long)1 << (int) ((N)%32))               \
  92                             & (V).idata[(N)/32])
  93 #define RIDBIT_NOTSETP(NN, VV) (! RIDBIT_SETP (NN, VV))
  94 #define RIDBIT_SET(N, V) do {                                                 \
  95                                 (V).idata[(N)/32]                             \
  96                                   |= ((unsigned long)1 << (int) ((N)%32));    \
  97                               } while (0)
  98 #define RIDBIT_RESET(N, V) do {                                               \
  99                                   (V).idata[(N)/32]                           \
 100                                     &= ~((unsigned long)1 << (int) ((N)%32)); \
 101                                 } while (0)
 102 #define RIDBIT_RESET_ALL(V) do {                                              \
 103                                    (V).idata[0] = 0;                          \
 104                                    (V).idata[1] = 0;                          \
 105                                  } while (0)
 106 #define RIDBIT_ANY_SET(V) ((V).idata[0] || (V).idata[1])
 107
 108 /* The elements of `ridpointers' are identifier nodes
 109    for the reserved type names and storage classes.
 110    It is indexed by a RID_... value.  */
 111 extern tree ridpointers[(int) RID_MAX];
 112
 113 /* the declaration found for the last IDENTIFIER token read in.
 114    yylex must look this up to detect typedefs, which get token type TYPENAME,
 115    so it is left around in case the identifier is not a typedef but is
 116    used in a context which makes it a reference to a variable.  */
 117 extern tree lastiddecl;
 118
 119 extern char *token_buffer;      /* Pointer to token buffer.  */
 120
 121 /* Back-door communication channel to the lexer.  */
 122 extern int looking_for_typename;
 123 extern int looking_for_template;
 124
 125 /* Tell the lexer where to look for names.  */
 126 extern tree got_scope;
 127 extern tree got_object;
 128
 129 /* Pending language change.
 130    Positive is push count, negative is pop count.  */
 131 extern int pending_lang_change;
 132
 133 extern int yylex PROTO((void));
 134
 135 extern struct lang_decl *free_lang_decl_chain;