mirror of
https://github.com/c-cube/ocaml-containers.git
synced 2025-12-06 03:05:28 -05:00
style: reindent in ccdeque
This commit is contained in:
Simon Cruanes
parent
2fa12665dd
commit
2ed821bbe1
1 changed files with 165 additions and 159 deletions
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@ -74,47 +74,48 @@ let is_empty d =
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assert (bool_eq res (d.cur = Empty));
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res
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(*let rec cur = { cell=Zero; prev=cur; next=cur } in*)
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let push_front d x =
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incr_size_ d;
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match d.cur with
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| Empty ->
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let rec node = { cell=One x; prev = node; next = node } in
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d.cur <- Node node
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| Node n ->
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match n.cell with
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| One y -> n.cell <- Two (x, y)
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| Two (y, z) -> n.cell <- Three (x,y,z)
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| Three _ ->
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let node = { cell = One x; prev = n.prev; next = n; } in
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n.prev.next <- node;
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n.prev <- node;
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d.cur <- Node node (* always point to first node *)
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| Empty ->
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let rec node = { cell=One x; prev = node; next = node } in
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d.cur <- Node node
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| Node n ->
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begin match n.cell with
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| One y -> n.cell <- Two (x, y)
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| Two (y, z) -> n.cell <- Three (x,y,z)
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| Three _ ->
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let node = { cell = One x; prev = n.prev; next = n; } in
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n.prev.next <- node;
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n.prev <- node;
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d.cur <- Node node (* always point to first node *)
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end
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let push_back d x =
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incr_size_ d;
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match d.cur with
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| Empty ->
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let rec node = { cell=One x; prev = node; next = node } in
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d.cur <- Node node
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| Node cur ->
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let n = cur.prev in (* last node *)
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match n.cell with
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| One y -> n.cell <- Two (y, x)
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| Two (y,z) -> n.cell <- Three (y, z, x)
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| Three _ ->
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let elt = { cell = One x; next=cur; prev=n; } in
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n.next <- elt;
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cur.prev <- elt
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| Empty ->
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let rec node = { cell=One x; prev = node; next = node } in
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d.cur <- Node node
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| Node cur ->
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let n = cur.prev in (* last node *)
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begin match n.cell with
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| One y -> n.cell <- Two (y, x)
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| Two (y,z) -> n.cell <- Three (y, z, x)
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| Three _ ->
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let elt = { cell = One x; next=cur; prev=n; } in
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n.next <- elt;
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cur.prev <- elt
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end
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let peek_front_opt d =
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match d.cur with
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| Empty -> None
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| Node cur ->
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match cur.cell with
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| One x -> Some x
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| Two (x,_) -> Some x
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| Three (x,_,_) -> Some x
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| Empty -> None
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| Node cur ->
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match cur.cell with
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| One x -> Some x
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| Two (x,_) -> Some x
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| Three (x,_,_) -> Some x
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let peek_front d = match peek_front_opt d with
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| None -> raise Empty
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@ -140,12 +141,12 @@ let peek_front d = match peek_front_opt d with
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let peek_back_opt d =
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match d.cur with
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| Empty -> None
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| Node cur ->
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match cur.prev.cell with
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| One x -> Some x
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| Two (_,x) -> Some x
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| Three (_,_,x) -> Some x
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| Empty -> None
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| Node cur ->
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match cur.prev.cell with
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| One x -> Some x
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| Two (_,x) -> Some x
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| Three (_,_,x) -> Some x
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let peek_back d = match peek_back_opt d with
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| None -> raise Empty
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@ -180,23 +181,23 @@ let remove_node_ n =
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let take_back_opt d =
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match d.cur with
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| Empty -> None
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| Node cur ->
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if Stdlib.(==) cur cur.prev
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then (
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(* only one cell *)
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decr_size_ d;
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let is_zero, x = take_back_node_ cur in
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if is_zero then d.cur <- Empty;
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Some x
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) else (
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let n = cur.prev in
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let is_zero, x = take_back_node_ n in
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decr_size_ d;
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(* remove previous node *)
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if is_zero then remove_node_ n;
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Some x
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)
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| Empty -> None
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| Node cur ->
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if Stdlib.(==) cur cur.prev
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then (
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(* only one cell *)
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decr_size_ d;
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let is_zero, x = take_back_node_ cur in
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if is_zero then d.cur <- Empty;
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Some x
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) else (
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let n = cur.prev in
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let is_zero, x = take_back_node_ n in
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decr_size_ d;
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(* remove previous node *)
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if is_zero then remove_node_ n;
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Some x
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)
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let take_back d = match take_back_opt d with
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| None -> raise Empty
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@ -220,25 +221,25 @@ let take_front_node_ n = match n.cell with
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let take_front_opt d =
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match d.cur with
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| Empty -> None
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| Node cur ->
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if Stdlib.(==) cur.prev cur
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then (
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(* only one cell *)
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decr_size_ d;
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let is_zero, x = take_front_node_ cur in
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if is_zero then d.cur <- Empty;
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Some x
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) else (
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decr_size_ d;
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let is_zero, x = take_front_node_ cur in
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if is_zero then (
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cur.prev.next <- cur.next;
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cur.next.prev <- cur.prev;
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d.cur <- Node cur.next;
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);
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Some x
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)
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| Empty -> None
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| Node cur ->
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if Stdlib.(==) cur.prev cur
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then (
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(* only one cell *)
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decr_size_ d;
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let is_zero, x = take_front_node_ cur in
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if is_zero then d.cur <- Empty;
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Some x
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) else (
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decr_size_ d;
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let is_zero, x = take_front_node_ cur in
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if is_zero then (
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cur.prev.next <- cur.next;
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cur.next.prev <- cur.prev;
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d.cur <- Node cur.next;
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);
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Some x
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)
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let take_front d = match take_front_opt d with
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| None -> raise Empty
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@ -258,29 +259,31 @@ let remove_front d = ignore (take_front_opt d)
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let update_front d f =
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match d.cur with
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| Empty -> ()
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| Node cur ->
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match cur.cell with
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| One x ->
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begin match f x with
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| None -> if Stdlib.(!=) cur.prev cur then (
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cur.prev.next <- cur.next;
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cur.next.prev <- cur.prev;
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d.cur <- Node cur.next;
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)
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else d.cur <- Empty
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| Some x -> cur.cell <- One x
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end
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| Two (x, y) ->
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begin match f x with
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| None -> cur.cell <- One (y)
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| Some x -> cur.cell <- Two (x,y)
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end
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| Three (x,y,z) ->
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begin match f x with
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| None -> cur.cell <- Two (y,z)
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| Some x -> cur.cell <- Three (x,y,z)
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end
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| Empty -> ()
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| Node cur ->
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match cur.cell with
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| One x ->
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begin match f x with
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| None ->
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if Stdlib.(!=) cur.prev cur then (
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cur.prev.next <- cur.next;
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cur.next.prev <- cur.prev;
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d.cur <- Node cur.next;
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) else (
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d.cur <- Empty
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)
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| Some x -> cur.cell <- One x
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end
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| Two (x, y) ->
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begin match f x with
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| None -> cur.cell <- One (y)
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| Some x -> cur.cell <- Two (x,y)
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end
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| Three (x,y,z) ->
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begin match f x with
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| None -> cur.cell <- Two (y,z)
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| Some x -> cur.cell <- Three (x,y,z)
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end
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(*$T update_front
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let q = of_list [1;2;3;4;5;6;7] in update_front q (fun _ -> None); to_list q = [2;3;4;5;6;7]
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@ -301,26 +304,27 @@ let update_front d f =
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let update_back d f =
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match d.cur with
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| Empty -> ()
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| Node cur ->
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let n = cur.prev in
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match n.cell with
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| One x ->
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begin match f x with
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| None -> if Stdlib.(!=) cur.prev cur then remove_node_ n
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else d.cur <- Empty
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| Some x -> n.cell <- One x
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end
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| Two (x, y) ->
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begin match f y with
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| None -> n.cell <- One (x)
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| Some y -> n.cell <- Two (x,y)
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end
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| Three (x,y,z) ->
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begin match f z with
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| None -> n.cell <- Two (x,y)
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| Some z -> n.cell <- Three (x,y,z)
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end
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| Empty -> ()
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| Node cur ->
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let n = cur.prev in
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match n.cell with
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| One x ->
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begin match f x with
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| None ->
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if Stdlib.(!=) cur.prev cur then remove_node_ n
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else d.cur <- Empty
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| Some x -> n.cell <- One x
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end
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| Two (x, y) ->
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begin match f y with
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| None -> n.cell <- One (x)
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| Some y -> n.cell <- Two (x,y)
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end
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| Three (x,y,z) ->
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begin match f z with
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| None -> n.cell <- Two (x,y)
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| Some z -> n.cell <- Three (x,y,z)
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end
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(*$T update_back
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let q = of_list [1;2;3;4;5;6;7] in update_back q (fun _ -> None); to_list q = [1;2;3;4;5;6]
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@ -349,9 +353,9 @@ let iter f d =
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if n.next != first then iter f ~first n.next
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in
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match d.cur with
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| Empty -> ()
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| Node cur ->
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iter f ~first:cur cur
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| Empty -> ()
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| Node cur ->
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iter f ~first:cur cur
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(*$T
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let n = ref 0 in iter (fun _ -> incr n) (of_list [1;2;3]); !n = 3
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@ -386,9 +390,9 @@ let fold f acc d =
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if Stdlib.(==) n.next first then acc else aux ~first f acc n.next
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in
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match d.cur with
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| Empty -> acc
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| Node cur ->
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aux ~first:cur f acc cur
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| Empty -> acc
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| Node cur ->
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aux ~first:cur f acc cur
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(*$T
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fold (+) 0 (of_list [1;2;3]) = 6
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@ -491,10 +495,10 @@ let filter_in_place (d:_ t) f : unit =
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let update_local_ n =
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d.size <- d.size - size_cell_ n.cell;
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match filter_cell_ f n.cell with
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| None -> None
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|Some n as new_cell->
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d.size <- d.size + size_cell_ n;
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new_cell
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| None -> None
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| Some n as new_cell->
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d.size <- d.size + size_cell_ n;
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new_cell
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in
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let rec loop ~stop_at n : unit =
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if n != stop_at then (
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@ -518,10 +522,10 @@ let filter_in_place (d:_ t) f : unit =
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let rec new_first_cell ~stop_at n =
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if n != stop_at then (
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match update_local_ n with
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| None ->
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new_first_cell ~stop_at n.next
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| Some c ->
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n.cell <- c; Some n
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| None ->
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new_first_cell ~stop_at n.next
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| Some c ->
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n.cell <- c; Some n
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) else None
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in
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match d.cur with
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@ -529,17 +533,18 @@ let filter_in_place (d:_ t) f : unit =
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| Node cur ->
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(* special case for first cell *)
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match update_local_ cur with
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| None ->
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begin match new_first_cell ~stop_at:cur cur.next with
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| None -> d.cur <- Empty
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| Some n ->
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cur.prev.next <- n;
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n.prev <- cur.prev;
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d.cur <- Node n;
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loop ~stop_at:n n.next
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end
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| Some c -> cur.cell <- c;
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loop ~stop_at:cur cur.next
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| None ->
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begin match new_first_cell ~stop_at:cur cur.next with
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| None -> d.cur <- Empty
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| Some n ->
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cur.prev.next <- n;
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n.prev <- cur.prev;
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d.cur <- Node n;
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loop ~stop_at:n n.next
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end
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| Some c ->
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cur.cell <- c;
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loop ~stop_at:cur cur.next
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(*$R
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let q = of_list [1;2;3;4;5;6] in
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@ -588,24 +593,25 @@ let of_gen g =
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let to_gen q =
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match q.cur with
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| Empty -> (fun () -> None)
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| Node cur ->
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let first = cur in
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let cell = ref (Some cur.cell) in
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let cur = ref cur in
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let rec next () = match !cell with
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| None when Stdlib.(==) (!cur).next first -> None
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| None ->
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(* go to next node *)
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let n = !cur in
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cur := n.next;
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cell := Some (n.next.cell);
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next ()
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| Some (One x) -> cell := None; Some x
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| Some (Two (x,y)) -> cell := Some (One y); Some x
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| Some (Three (x,y,z)) -> cell := Some (Two (y,z)); Some x
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in
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next
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| Empty -> (fun () -> None)
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| Node cur ->
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let first = cur in
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let cell = ref (Some cur.cell) in
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let cur = ref cur in
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let rec next () =
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match !cell with
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| None when Stdlib.(==) (!cur).next first -> None
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| None ->
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(* go to next node *)
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let n = !cur in
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cur := n.next;
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cell := Some (n.next.cell);
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next ()
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| Some (One x) -> cell := None; Some x
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| Some (Two (x,y)) -> cell := Some (One y); Some x
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| Some (Three (x,y,z)) -> cell := Some (Two (y,z)); Some x
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in
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next
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(*$T
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of_list [1;2;3] |> to_gen |> of_gen |> to_list = [1;2;3]
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Add table
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