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/* Interface to functions for deciding which macros are currently in scope.
Copyright (C) 2002, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
Contributed by Red Hat, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef MACROSCOPE_H
#define MACROSCOPE_H
#include "macrotab.h"
#include "symtab.h"
/* The table of macros defined by the user. */
extern struct macro_table *macro_user_macros;
/* All the information we need to decide which macro definitions are
in scope: a source file (either a main source file or an
#inclusion), and a line number in that file. */
struct macro_scope {
struct macro_source_file *file;
int line;
};
/* Return a `struct macro_scope' object corresponding to the symtab
and line given in SAL. If we have no macro information for that
location, or if SAL's pc is zero, return zero. */
struct macro_scope *sal_macro_scope (struct symtab_and_line sal);
/* Return a `struct macro_scope' object representing just the
user-defined macros. The result is allocated using xmalloc; the
caller is responsible for freeing it. */
struct macro_scope *user_macro_scope (void);
/* Return a `struct macro_scope' object describing the scope the `macro
expand' and `macro expand-once' commands should use for looking up
macros. If we have a selected frame, this is the source location of
its PC; otherwise, this is the last listing position.
If we have no macro information for the current location, return
the user macro scope.
The object returned is allocated using xmalloc; the caller is
responsible for freeing it. */
struct macro_scope *default_macro_scope (void);
/* Look up the definition of the macro named NAME in scope at the source
location given by BATON, which must be a pointer to a `struct
macro_scope' structure. This function is suitable for use as
a macro_lookup_ftype function. */
struct macro_definition *standard_macro_lookup (const char *name, void *baton);
#endif /* MACROSCOPE_H */
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