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cpp-id-data.h revision 1.1.1.1.8.2 
      1 /* Structures that hang off cpp_identifier, for PCH.
      2    Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
      3    1999, 2000, 2001, 2002, 2003, 2004, 2009 Free Software Foundation, Inc.
      4 
      5 This program is free software; you can redistribute it and/or modify it
      6 under the terms of the GNU General Public License as published by the
      7 Free Software Foundation; either version 3, or (at your option) any
      8 later version.
      9 
     10 This program is distributed in the hope that it will be useful,
     11 but WITHOUT ANY WARRANTY; without even the implied warranty of
     12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     13 GNU General Public License for more details.
     14 
     15 You should have received a copy of the GNU General Public License
     16 along with this program; see the file COPYING3.  If not see
     17 <http://www.gnu.org/licenses/>.  */
     18 
     19 #include "cpplib.h"
     20 
     21 #if !defined (HAVE_UCHAR) && !defined (IN_GCC)
     22 typedef unsigned char uchar;
     23 #endif
     24 
     25 #define UC (const unsigned char *)  /* Intended use: UC"string" */
     26 
     27 /* Chained list of answers to an assertion.  */
     28 struct GTY(()) answer {
     29   struct answer *next;
     30   unsigned int count;
     31   cpp_token GTY ((length ("%h.count"))) first[1];
     32 };
     33 
     34 /* Each macro definition is recorded in a cpp_macro structure.
     35    Variadic macros cannot occur with traditional cpp.  */
     36 struct GTY(()) cpp_macro {
     37   /* Parameters, if any.  */
     38   cpp_hashnode ** GTY ((nested_ptr (union tree_node,
     39 		"%h ? CPP_HASHNODE (GCC_IDENT_TO_HT_IDENT (%h)) : NULL",
     40 			"%h ? HT_IDENT_TO_GCC_IDENT (HT_NODE (%h)) : NULL"),
     41 			length ("%h.paramc")))
     42     params;
     43 
     44   /* Replacement tokens (ISO) or replacement text (traditional).  See
     45      comment at top of cpptrad.c for how traditional function-like
     46      macros are encoded.  */
     47   union cpp_macro_u
     48   {
     49     cpp_token * GTY ((tag ("0"), length ("%0.count"))) tokens;
     50     const unsigned char * GTY ((tag ("1"))) text;
     51   } GTY ((desc ("%1.traditional"))) exp;
     52 
     53   /* Definition line number.  */
     54   source_location line;
     55 
     56   /* Number of tokens in expansion, or bytes for traditional macros.  */
     57   unsigned int count;
     58 
     59   /* Number of parameters.  */
     60   unsigned short paramc;
     61 
     62   /* If a function-like macro.  */
     63   unsigned int fun_like : 1;
     64 
     65   /* If a variadic macro.  */
     66   unsigned int variadic : 1;
     67 
     68   /* If macro defined in system header.  */
     69   unsigned int syshdr   : 1;
     70 
     71   /* Nonzero if it has been expanded or had its existence tested.  */
     72   unsigned int used     : 1;
     73 
     74   /* Indicate which field of 'exp' is in use.  */
     75   unsigned int traditional : 1;
     76 
     77   /* Indicate whether the tokens include extra CPP_PASTE tokens at the
     78      end to track invalid redefinitions with consecutive CPP_PASTE
     79      tokens.  */
     80   unsigned int extra_tokens : 1;
     81 };
     82