| 1 | /* Interface to functions for deciding which macros are currently in scope. |
| 2 | Copyright 2002 Free Software Foundation, Inc. |
| 3 | Contributed by Red Hat, Inc. |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 59 Temple Place - Suite 330, |
| 20 | Boston, MA 02111-1307, USA. */ |
| 21 | |
| 22 | #ifndef MACROSCOPE_H |
| 23 | #define MACROSCOPE_H |
| 24 | |
| 25 | #include "macrotab.h" |
| 26 | #include "symtab.h" |
| 27 | |
| 28 | |
| 29 | /* All the information we need to decide which macro definitions are |
| 30 | in scope: a source file (either a main source file or an |
| 31 | #inclusion), and a line number in that file. */ |
| 32 | struct macro_scope { |
| 33 | struct macro_source_file *file; |
| 34 | int line; |
| 35 | }; |
| 36 | |
| 37 | |
| 38 | /* Return a `struct macro_scope' object corresponding to the symtab |
| 39 | and line given in SAL. If we have no macro information for that |
| 40 | location, or if SAL's pc is zero, return zero. */ |
| 41 | struct macro_scope *sal_macro_scope (struct symtab_and_line sal); |
| 42 | |
| 43 | |
| 44 | /* Return a `struct macro_scope' object describing the scope the `macro |
| 45 | expand' and `macro expand-once' commands should use for looking up |
| 46 | macros. If we have a selected frame, this is the source location of |
| 47 | its PC; otherwise, this is the last listing position. |
| 48 | |
| 49 | If we have no macro information for the current location, return zero. |
| 50 | |
| 51 | The object returned is allocated using xmalloc; the caller is |
| 52 | responsible for freeing it. */ |
| 53 | struct macro_scope *default_macro_scope (void); |
| 54 | |
| 55 | |
| 56 | /* Look up the definition of the macro named NAME in scope at the source |
| 57 | location given by BATON, which must be a pointer to a `struct |
| 58 | macro_scope' structure. This function is suitable for use as |
| 59 | a macro_lookup_ftype function. */ |
| 60 | struct macro_definition *standard_macro_lookup (const char *name, void *baton); |
| 61 | |
| 62 | |
| 63 | #endif /* MACROSCOPE_H */ |