gcc/c-pragma.h

   1 /* Pragma related interfaces.
   2    Copyright (C) 1995, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
   3    Free Software Foundation, Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify it under
   8 the terms of the GNU General Public License as published by the Free
   9 Software Foundation; either version 2, or (at your option) any later
  10 version.
  11
  12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING.  If not, write to the Free
  19 Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
  20 02110-1301, 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 anciliary handlers will follow these.  */
  29 typedef enum pragma_kind {
  30   PRAGMA_NONE = 0,
  31
  32   PRAGMA_GCC_PCH_PREPROCESS,
  33
  34   PRAGMA_FIRST_EXTERNAL
  35 } pragma_kind;
  36
  37 /* Cause the `yydebug' variable to be defined.  */
  38 #define YYDEBUG 1
  39 extern int yydebug;
  40
  41 extern struct cpp_reader* parse_in;
  42
  43 #define HANDLE_PRAGMA_WEAK SUPPORTS_WEAK
  44
  45 #ifdef HANDLE_SYSV_PRAGMA
  46 /* We always support #pragma pack for SYSV pragmas.  */
  47 #ifndef HANDLE_PRAGMA_PACK
  48 #define HANDLE_PRAGMA_PACK 1
  49 #endif
  50 #endif /* HANDLE_SYSV_PRAGMA */
  51
  52
  53 #ifdef HANDLE_PRAGMA_PACK_PUSH_POP
  54 /* If we are supporting #pragma pack(push... then we automatically
  55    support #pragma pack(<n>)  */
  56 #define HANDLE_PRAGMA_PACK 1
  57 #endif /* HANDLE_PRAGMA_PACK_PUSH_POP */
  58
  59 /* It's safe to always leave visibility pragma enabled as if
  60    visibility is not supported on the host OS platform the
  61    statements are ignored.  */
  62 #define HANDLE_PRAGMA_VISIBILITY 1
  63
  64 extern void init_pragma (void);
  65
  66 /* Front-end wrappers for pragma registration.  */
  67 typedef void (*pragma_handler)(struct cpp_reader *);
  68 extern void c_register_pragma (const char *, const char *, pragma_handler);
  69 extern void c_register_pragma_with_expansion (const char *, const char *,
  70                                               pragma_handler);
  71 extern void c_invoke_pragma_handler (unsigned int);
  72
  73 extern void maybe_apply_pragma_weak (tree);
  74 extern void maybe_apply_pending_pragma_weaks (void);
  75 extern tree maybe_apply_renaming_pragma (tree, tree);
  76 extern void add_to_renaming_pragma_list (tree, tree);
  77
  78 extern enum cpp_ttype pragma_lex (tree *);
  79
  80 /* This is not actually available to pragma parsers.  It's merely a
  81    convenient location to declare this function for c-lex, after
  82    having enum cpp_ttype declared.  */
  83 extern enum cpp_ttype c_lex_with_flags (tree *, location_t *, unsigned char *);
  84
  85 /* If 1, then lex strings into the execution character set.
  86    If 0, lex strings into the host character set.
  87    If -1, lex both, and chain them together, such that the former
  88    is the TREE_CHAIN of the latter.  */
  89 extern int c_lex_string_translate;
  90
  91 /* If true, strings should be passed to the caller of c_lex completely
  92    unmolested (no concatenation, no translation).  */
  93 extern bool c_lex_return_raw_strings;
  94
  95 #endif /* GCC_C_PRAGMA_H */