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cpp-id-data.h revision 1.1.1.2 
      1 /* Structures that hang off cpp_identifier, for PCH.
      2    Copyright (C) 1986-2013 Free Software Foundation, Inc.
      3 
      4 This program is free software; you can redistribute it and/or modify it
      5 under the terms of the GNU General Public License as published by the
      6 Free Software Foundation; either version 3, or (at your option) any
      7 later version.
      8 
      9 This program is distributed in the hope that it will be useful,
     10 but WITHOUT ANY WARRANTY; without even the implied warranty of
     11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     12 GNU General Public License for more details.
     13 
     14 You should have received a copy of the GNU General Public License
     15 along with this program; see the file COPYING3.  If not see
     16 <http://www.gnu.org/licenses/>.  */
     17 
     18 #include "cpplib.h"
     19 
     20 #if !defined (HAVE_UCHAR) && !defined (IN_GCC)
     21 typedef unsigned char uchar;
     22 #endif
     23 
     24 #define UC (const unsigned char *)  /* Intended use: UC"string" */
     25 
     26 /* Chained list of answers to an assertion.  */
     27 struct GTY(()) answer {
     28   struct answer *next;
     29   unsigned int count;
     30   cpp_token GTY ((length ("%h.count"))) first[1];
     31 };
     32 
     33 /* Each macro definition is recorded in a cpp_macro structure.
     34    Variadic macros cannot occur with traditional cpp.  */
     35 struct GTY(()) cpp_macro {
     36   /* Parameters, if any.  */
     37   cpp_hashnode ** GTY ((nested_ptr (union tree_node,
     38 		"%h ? CPP_HASHNODE (GCC_IDENT_TO_HT_IDENT (%h)) : NULL",
     39 			"%h ? HT_IDENT_TO_GCC_IDENT (HT_NODE (%h)) : NULL"),
     40 			length ("%h.paramc")))
     41     params;
     42 
     43   /* Replacement tokens (ISO) or replacement text (traditional).  See
     44      comment at top of cpptrad.c for how traditional function-like
     45      macros are encoded.  */
     46   union cpp_macro_u
     47   {
     48     cpp_token * GTY ((tag ("0"), length ("%0.count"))) tokens;
     49     const unsigned char * GTY ((tag ("1"))) text;
     50   } GTY ((desc ("%1.traditional"))) exp;
     51 
     52   /* Definition line number.  */
     53   source_location line;
     54 
     55   /* Number of tokens in expansion, or bytes for traditional macros.  */
     56   unsigned int count;
     57 
     58   /* Number of parameters.  */
     59   unsigned short paramc;
     60 
     61   /* If a function-like macro.  */
     62   unsigned int fun_like : 1;
     63 
     64   /* If a variadic macro.  */
     65   unsigned int variadic : 1;
     66 
     67   /* If macro defined in system header.  */
     68   unsigned int syshdr   : 1;
     69 
     70   /* Nonzero if it has been expanded or had its existence tested.  */
     71   unsigned int used     : 1;
     72 
     73   /* Indicate which field of 'exp' is in use.  */
     74   unsigned int traditional : 1;
     75 
     76   /* Indicate whether the tokens include extra CPP_PASTE tokens at the
     77      end to track invalid redefinitions with consecutive CPP_PASTE
     78      tokens.  */
     79   unsigned int extra_tokens : 1;
     80 };
     81