1 /* Interface to functions for deciding which macros are currently in scope. 2 Copyright (C) 2002, 2007, 2008, 2009 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 3 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, see <http://www.gnu.org/licenses/>. */ 19 20 #ifndef MACROSCOPE_H 21 #define MACROSCOPE_H 22 23 #include "macrotab.h" 24 #include "symtab.h" 25 26 27 /* The table of macros defined by the user. */ 28 extern struct macro_table *macro_user_macros; 29 30 /* All the information we need to decide which macro definitions are 31 in scope: a source file (either a main source file or an 32 #inclusion), and a line number in that file. */ 33 struct macro_scope { 34 struct macro_source_file *file; 35 int line; 36 }; 37 38 39 /* Return a `struct macro_scope' object corresponding to the symtab 40 and line given in SAL. If we have no macro information for that 41 location, or if SAL's pc is zero, return zero. */ 42 struct macro_scope *sal_macro_scope (struct symtab_and_line sal); 43 44 45 /* Return a `struct macro_scope' object representing just the 46 user-defined macros. The result is allocated using xmalloc; the 47 caller is responsible for freeing it. */ 48 struct macro_scope *user_macro_scope (void); 49 50 /* Return a `struct macro_scope' object describing the scope the `macro 51 expand' and `macro expand-once' commands should use for looking up 52 macros. If we have a selected frame, this is the source location of 53 its PC; otherwise, this is the last listing position. 54 55 If we have no macro information for the current location, return 56 the user macro scope. 57 58 The object returned is allocated using xmalloc; the caller is 59 responsible for freeing it. */ 60 struct macro_scope *default_macro_scope (void); 61 62 63 /* Look up the definition of the macro named NAME in scope at the source 64 location given by BATON, which must be a pointer to a `struct 65 macro_scope' structure. This function is suitable for use as 66 a macro_lookup_ftype function. */ 67 struct macro_definition *standard_macro_lookup (const char *name, void *baton); 68 69 70 #endif /* MACROSCOPE_H */ 71