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/* Interface to functions for deciding which macros are currently in scope.
Copyright (C) 2002-2017 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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