cpp-id-data.h revision 1.1.1.1 
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
5This program is free software; you can redistribute it and/or modify it
6under the terms of the GNU General Public License as published by the
7Free Software Foundation; either version 3, or (at your option) any
8later version.
9
10This program is distributed in the hope that it will be useful,
11but WITHOUT ANY WARRANTY; without even the implied warranty of
12MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13GNU General Public License for more details.
14
15You should have received a copy of the GNU General Public License
16along 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)
22typedef 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.  */
28struct 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.  */
36struct 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