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|
-module(ataxic_sugar).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% TYPES %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-include("ataxia/ataxic.hrl").
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% EXPORTS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-export
(
[
update_array_cell/2,
update_orddict_element/2,
update_ordset/2,
nop/0
]
).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% LOCAL FUNCTIONS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% EXPORTED FUNCTIONS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-spec update_array_cell (non_neg_integer(), ataxic:basic()) -> ataxic:basic().
update_array_cell (_IX, #current{}) -> nop();
update_array_cell (IX, OP) ->
ataxic:apply_function
(
array,
set,
[
ataxic:constant(IX),
(
case ataxic:is_constant(OP) of
true -> OP;
false ->
ataxic:sequence
(
[
ataxic:apply_function
(
array,
get,
[
ataxic:constant(IX),
ataxic:current_value()
]
),
OP
]
)
end
),
ataxic:current_value()
]
).
-spec update_orddict_element
(
any(),
ataxic:basic()
)
-> ataxic:basic().
update_orddict_element (_IX, #current{}) -> nop();
update_orddict_element (IX, OP) ->
ataxic:apply_function
(
orddict,
store,
[
ataxic:constant(IX),
(
case ataxic:is_constant(OP) of
true -> OP;
false ->
ataxic:sequence
(
[
ataxic:apply_function
(
orddict,
fetch,
[
ataxic:constant(IX),
ataxic:current_value()
]
),
OP
]
)
end
),
ataxic:current_value()
]
).
-spec nop () -> ataxic:basic().
nop () -> ataxic:sequence([]).
-spec update_ordset
(
ordsets:ordset(any()),
ordsets:ordset(any())
) -> ataxic:basic().
update_ordset (Old, New) ->
Remove = ordsets:subtract(Old, New),
Add = ordsets:subtract(New, Old),
case {ordsets:is_empty(Add), ordsets:is_empty(Remove)} of
{true, true} -> nop();
{true, false} ->
ataxic:apply_function
(
ordsets,
substract,
[
ataxic:current_value(),
ataxic:constant(Remove)
]
);
{false, true} ->
ataxic:apply_function
(
ordsets,
union,
[
ataxic:current_value(),
ataxic:constant(Add)
]
);
{false, false} ->
ataxic:sequence
(
[
ataxic:apply_function
(
ordsets,
substract,
[
ataxic:current_value(),
ataxic:constant(Remove)
]
),
ataxic:apply_function
(
ordsets,
union,
[
ataxic:current_value(),
ataxic:constant(Add)
]
)
]
)
end.
|
