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 */ 64