40 lines
1.3 KiB
OCaml
40 lines
1.3 KiB
OCaml
|
(* camlp4r pa_extend.cmo q_MLast.cmo *)
|
||
|
|
(* $Id$ *)
|
||
|
|
|
||
|
|
open Pcaml;
|
||
|
|
|
||
|
|
EXTEND
|
||
|
|
GLOBAL: expr;
|
||
|
|
expr: LEVEL "top"
|
||
|
|
[ [ n = box_type; d = SELF; "begin";
|
||
|
|
el = LIST0 [ e = box_expr; ";" -> e ]; "end" ->
|
||
|
|
let el = [<:expr< Format.$lid:"open_" ^ n$ $d$ >> :: el] in
|
||
|
|
let el = el @ [<:expr< Format.close_box () >>] in
|
||
|
|
<:expr< do { $list:el$ } >>
|
||
|
|
| "hbox"; "begin"; el = LIST0 [ e = box_expr; ";" -> e ]; "end" ->
|
||
|
|
let el = [<:expr< Format.open_hbox () >> :: el] in
|
||
|
|
let el = el @ [<:expr< Format.close_box () >>] in
|
||
|
|
<:expr< do { $list:el$ } >>
|
||
|
|
| "nobox"; "begin"; el = LIST0 [ e = box_expr; ";" -> e ]; "end" ->
|
||
|
|
match el with
|
||
|
|
[ [e] -> e
|
||
|
|
| _ -> <:expr< do { $list:el$ } >> ] ] ]
|
||
|
|
;
|
||
|
|
box_type:
|
||
|
|
[ [ n = "hovbox" -> n
|
||
|
|
| n = "hvbox" -> n
|
||
|
|
| n = "vbox" -> n
|
||
|
|
| n = "box" -> n ] ]
|
||
|
|
;
|
||
|
|
box_expr:
|
||
|
|
[ [ s = STRING -> <:expr< Format.print_string $str:s$ >>
|
||
|
|
| UIDENT "STRING"; e = expr -> <:expr< Format.print_string $e$ >>
|
||
|
|
| UIDENT "INT"; e = expr -> <:expr< Format.print_int $e$ >>
|
||
|
|
| "/-" -> <:expr< Format.print_space () >>
|
||
|
|
| "//" -> <:expr< Format.print_cut () >>
|
||
|
|
| "!/" -> <:expr< Format.force_newline () >>
|
||
|
|
| "?/" -> <:expr< Format.print_if_newline () >>
|
||
|
|
| e = expr -> e ] ]
|
||
|
|
;
|
||
|
|
END;
|