mirror of https://github.com/ArduPilot/ardupilot
119 lines
2.9 KiB
C++
119 lines
2.9 KiB
C++
/*
|
|
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/>.
|
|
*/
|
|
|
|
#define DECLARE_TYPESAFE_INDEX(NAME, TYPE) typedef typesafe_index<TYPE, class TAG_##NAME> NAME
|
|
|
|
/// This template allows for indexing with compile time check and generating
|
|
/// error for using one index variable for another array that is to be indexed
|
|
/// with different variable.
|
|
/// base_type specifies
|
|
///
|
|
/// @param base_type Base integral type
|
|
///
|
|
/// @param tag Tag Name to prevent copy from one type to other
|
|
///
|
|
template <class base_type, class tag> class typesafe_index
|
|
{
|
|
public:
|
|
explicit typesafe_index(base_type i = base_type()) : p(i) {}
|
|
|
|
void operator=(const base_type& val)
|
|
{
|
|
p = val;
|
|
}
|
|
|
|
constexpr base_type get_int() const
|
|
{
|
|
return p;
|
|
}
|
|
|
|
typesafe_index operator++()
|
|
{
|
|
return typesafe_index(++p);
|
|
}
|
|
|
|
typesafe_index operator++(int)
|
|
{
|
|
return typesafe_index(p++);
|
|
}
|
|
|
|
typesafe_index operator%(const base_type& val)
|
|
{
|
|
return typesafe_index(p % val);
|
|
}
|
|
|
|
bool operator<(const base_type& val) const
|
|
{
|
|
return (p<val);
|
|
}
|
|
|
|
bool operator<=(const base_type& val) const
|
|
{
|
|
return (p<=val);
|
|
}
|
|
|
|
bool operator>=(const base_type& val) const
|
|
{
|
|
return (p>=val);
|
|
}
|
|
|
|
|
|
bool operator>(const base_type& val) const
|
|
{
|
|
return (p>val);
|
|
}
|
|
|
|
bool operator!=(const base_type& val) const
|
|
{
|
|
return (p!=val);
|
|
}
|
|
|
|
bool operator==(const base_type& val) const
|
|
{
|
|
return (p==val);
|
|
}
|
|
|
|
explicit constexpr operator base_type() const
|
|
{
|
|
return p;
|
|
}
|
|
|
|
typesafe_index operator+(const base_type& val) const
|
|
{
|
|
return typesafe_index(p+val);
|
|
}
|
|
private:
|
|
base_type p;
|
|
};
|
|
|
|
/// This template associates the the base_type array with accessor_type(index).
|
|
/// So the elements can be accessed using [] only using accessor_type index
|
|
/// _priv_instance is kept public for use in Parameter declaration.
|
|
///
|
|
template <class base_type, uint32_t num_instances, typename accessor_type> class RestrictIDTypeArray
|
|
{
|
|
public:
|
|
base_type _priv_instance[num_instances];
|
|
base_type& operator[](const accessor_type& index)
|
|
{
|
|
return _priv_instance[index.get_int()];
|
|
}
|
|
|
|
constexpr const base_type& operator[](const accessor_type& index) const
|
|
{
|
|
return _priv_instance[index.get_int()];
|
|
}
|
|
};
|