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/* Pragma identifiers built in to the front end parsers.  Identifiers
28   for ancillary handlers will follow these.  */
29typedef enum pragma_kind {
30  PRAGMA_NONE = 0,
31
32  PRAGMA_OMP_ATOMIC,
33  PRAGMA_OMP_BARRIER,
34  PRAGMA_OMP_CRITICAL,
35  PRAGMA_OMP_FLUSH,
36  PRAGMA_OMP_FOR,
37  PRAGMA_OMP_MASTER,
38  PRAGMA_OMP_ORDERED,
39  PRAGMA_OMP_PARALLEL,
40  PRAGMA_OMP_PARALLEL_FOR,
41  PRAGMA_OMP_PARALLEL_SECTIONS,
42  PRAGMA_OMP_SECTION,
43  PRAGMA_OMP_SECTIONS,
44  PRAGMA_OMP_SINGLE,
45  PRAGMA_OMP_THREADPRIVATE,
46
47  PRAGMA_GCC_PCH_PREPROCESS,
48
49  PRAGMA_FIRST_EXTERNAL
50} pragma_kind;
51
52/* Cause the `yydebug' variable to be defined.  */
53#define YYDEBUG 1
54extern int yydebug;
55
56extern struct cpp_reader* parse_in;
57
58#define HANDLE_PRAGMA_WEAK SUPPORTS_WEAK
59
60#ifdef HANDLE_SYSV_PRAGMA
61/* We always support #pragma pack for SYSV pragmas.  */
62#ifndef HANDLE_PRAGMA_PACK
63#define HANDLE_PRAGMA_PACK 1
64#endif
65#endif /* HANDLE_SYSV_PRAGMA */
66
67
68#ifdef HANDLE_PRAGMA_PACK_PUSH_POP
69/* If we are supporting #pragma pack(push... then we automatically
70   support #pragma pack(<n>)  */
71#define HANDLE_PRAGMA_PACK 1
72#endif /* HANDLE_PRAGMA_PACK_PUSH_POP */
73
74/* It's safe to always leave visibility pragma enabled as if
75   visibility is not supported on the host OS platform the
76   statements are ignored.  */
77#define HANDLE_PRAGMA_VISIBILITY 1
78extern void push_visibility (const char *);
79extern void pop_visibility (void);
80
81extern void init_pragma (void);
82
83/* Front-end wrappers for pragma registration.  */
84typedef void (*pragma_handler)(struct cpp_reader *);
85extern void c_register_pragma (const char *, const char *, pragma_handler);
86extern void c_register_pragma_with_expansion (const char *, const char *,
87					      pragma_handler);
88extern void c_invoke_pragma_handler (unsigned int);
89
90extern void maybe_apply_pragma_weak (tree);
91extern void maybe_apply_pending_pragma_weaks (void);
92extern tree maybe_apply_renaming_pragma (tree, tree);
93extern void add_to_renaming_pragma_list (tree, tree);
94
95extern enum cpp_ttype pragma_lex (tree *);
96
97/* This is not actually available to pragma parsers.  It's merely a
98   convenient location to declare this function for c-lex, after
99   having enum cpp_ttype declared.  */
100extern enum cpp_ttype c_lex_with_flags (tree *, location_t *, unsigned char *);
101
102/* If 1, then lex strings into the execution character set.
103   If 0, lex strings into the host character set.
104   If -1, lex both, and chain them together, such that the former
105   is the TREE_CHAIN of the latter.  */
106extern int c_lex_string_translate;
107
108/* If true, strings should be passed to the caller of c_lex completely
109   unmolested (no concatenation, no translation).  */
110extern bool c_lex_return_raw_strings;
111
112#endif /* GCC_C_PRAGMA_H */
113