1/* Pragma related interfaces.
2   Copyright (C) 1995, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
3   Free Software Foundation, Inc.
4
5This file is part of GCC.
6
7GCC is free software; you can redistribute it and/or modify it under
8the terms of the GNU General Public License as published by the Free
9Software Foundation; either version 2, or (at your option) any later
10version.
11
12GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13WARRANTY; without even the implied warranty of MERCHANTABILITY or
14FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
15for more details.
16
17You should have received a copy of the GNU General Public License
18along with GCC; see the file COPYING.  If not, write to the Free
19Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
2002110-1301, USA.  */
21
22#ifndef GCC_C_PRAGMA_H
23#define GCC_C_PRAGMA_H
24
25#include <cpplib.h> /* For enum cpp_ttype.  */
26
27/* Cause the `yydebug' variable to be defined.  */
28#define YYDEBUG 1
29extern int yydebug;
30
31extern struct cpp_reader* parse_in;
32
33#define HANDLE_PRAGMA_WEAK SUPPORTS_WEAK
34
35#ifdef HANDLE_SYSV_PRAGMA
36/* We always support #pragma pack for SYSV pragmas.  */
37#ifndef HANDLE_PRAGMA_PACK
38#define HANDLE_PRAGMA_PACK 1
39#endif
40#endif /* HANDLE_SYSV_PRAGMA */
41
42
43#ifdef HANDLE_PRAGMA_PACK_PUSH_POP
44/* If we are supporting #pragma pack(push... then we automatically
45   support #pragma pack(<n>)  */
46#define HANDLE_PRAGMA_PACK 1
47#endif /* HANDLE_PRAGMA_PACK_PUSH_POP */
48
49/* It's safe to always leave visibility pragma enabled as if
50   visibility is not supported on the host OS platform the
51   statements are ignored.  */
52#define HANDLE_PRAGMA_VISIBILITY 1
53
54extern void init_pragma (void);
55
56/* Front-end wrappers for pragma registration to avoid dragging
57   cpplib.h in almost everywhere.  */
58extern void c_register_pragma (const char *, const char *,
59			       void (*) (struct cpp_reader *));
60extern void c_register_pragma_with_expansion (const char *, const char *,
61					      void (*) (struct cpp_reader *));
62extern void maybe_apply_pragma_weak (tree);
63extern void maybe_apply_pending_pragma_weaks (void);
64extern tree maybe_apply_renaming_pragma (tree, tree);
65extern void add_to_renaming_pragma_list (tree, tree);
66
67extern enum cpp_ttype c_lex (tree *);
68extern enum cpp_ttype c_lex_with_flags (tree *, location_t *, unsigned char *);
69
70/* If 1, then lex strings into the execution character set.
71   If 0, lex strings into the host character set.
72   If -1, lex both, and chain them together, such that the former
73   is the TREE_CHAIN of the latter.  */
74extern int c_lex_string_translate;
75
76/* If true, strings should be passed to the caller of c_lex completely
77   unmolested (no concatenation, no translation).  */
78extern bool c_lex_return_raw_strings;
79
80#endif /* GCC_C_PRAGMA_H */
81