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/*
Copyright (C) 2021 Fredrik Johansson
This file is part of Calcium.
Calcium is free software: you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License (LGPL) as published
by the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version. See <http://www.gnu.org/licenses/>.
*/
#include "fexpr.h"
slong
fexpr_num_leaves(const fexpr_t expr)
{
if (fexpr_is_atom(expr))
{
return 1;
}
else
{
fexpr_t func, arg;
slong i, leaves, nargs;
fexpr_view_func(func, expr);
leaves = fexpr_num_leaves(func);
nargs = fexpr_nargs(expr);
*arg = *func;
for (i = 0; i < nargs; i++)
{
fexpr_view_next(arg);
leaves += fexpr_num_leaves(arg);
}
return leaves;
}
}
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