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open StdLabels
open Css.Types
(* Types helpers *)
type ('a, 'b) printer = (Format.formatter -> 'a -> unit) -> 'a -> 'b
type ('a, 'b) format_printer = (('a, 'b) printer, Format.formatter, unit) format
type style_rule_format = ( Component_value.t with_loc list
, (Declaration_list.kind list, unit) printer) format_printer
type declaration_format= ( Declaration_list.kind list,
unit) format_printer
type stylesheet_format = ( Rule.t list,
unit) format_printer
type at_rule_format = (string ->
( Component_value.t with_loc list
, (Brace_block.t, unit) printer) printer, Format.formatter, unit) format
type important_format = (unit, Format.formatter, unit) format
type template =
{ main_css : stylesheet_format
; style_rule : style_rule_format
; declaration : declaration_format
; stylesheet : stylesheet_format
; at_rule : at_rule_format
; important : important_format
}
let pp_sep_column formater () = Format.fprintf formater ";@,"
let pretty_printer =
{ main_css = Stdlib.format_of_string "@[<v>%a@]@."
; style_rule = Stdlib.format_of_string "%a {@;<1 1>@[<v>%a@]@,}@,"
; declaration = Stdlib.format_of_string "{@;<1 1>@[<v>%a@]@,}@,"
; stylesheet = Stdlib.format_of_string "{@;<1 1>@[<v>%a@]@,}@,"
; at_rule = Stdlib.format_of_string "@%s%a%a@,"
; important = Stdlib.format_of_string " !important"
}
let minify_printer =
{ main_css = Stdlib.format_of_string "@[<h>%a@]@."
; style_rule = Stdlib.format_of_string "%a{%a}"
; declaration = Stdlib.format_of_string " {%a}"
; stylesheet = Stdlib.format_of_string " {%a}"
; at_rule = Stdlib.format_of_string "@%s%a%a"
; important = Stdlib.format_of_string "!important"
}
type sep_printer
= Format.formatter -> bool -> unit
let print_space
: sep_printer
= fun formatter -> function
| true -> Format.fprintf formatter " "
| false -> ()
let print_coma
: sep_printer
= fun formatter -> function
| true -> Format.fprintf formatter ","
| false -> ()
let rec print_block
: ?printer:sep_printer -> ?add_space:bool -> bool -> Format.formatter -> Component_value.t with_loc list -> unit
= fun ?(printer=print_space) ?(add_space=false) is_selector formatter values ->
let _ = List.fold_left values
~init:add_space
~f:(fun v -> print_component printer is_selector v formatter) in
()
(** Print a component list.
[print_component sep is_selector]
[sep] : The space is the common separator, but it may be a coma when the
components are selectors.
[is_selector] tell if we are in a selector or in declaration. Some
operators are handled differently in selectors (hash represent id and
should be prepend by space)
[add_space] tell the printer that a space shall be added before the print.
*)
and print_component
: sep_printer -> bool -> bool -> Format.formatter -> Component_value.t with_loc -> bool
= fun sep_printer is_selector add_space formatter (value, _) ->
let _ = sep_printer in
match value with
| Delim str ->
begin match is_selector, str with
| true, "*"-> Format.fprintf formatter "%a*" print_space add_space
| _ -> Format.fprintf formatter "%s" str
end;
false
| Uri str ->
Format.fprintf formatter {|%aurl(%s)|}
print_space add_space
str;
true
| Ident str
| Operator str
| Number str ->
Format.fprintf formatter {|%a%s|}
print_space add_space
str;
true
| String str
| Unicode_range str ->
Format.fprintf formatter {|"%a%s"|}
print_space add_space
str;
true
| Hash str ->
begin match is_selector with
| true ->
(* We are in a selector, the # Operator is alway attached to an
element — * are explicited in the parser. We do not need to add
space before *)
Format.fprintf formatter "#%s" str
| false ->
Format.fprintf formatter "%a#%s"
print_space add_space
str;
end;
true
| Percentage str ->
Format.fprintf formatter "%a%s%%"
print_space add_space
str;
true
| Dimension (str, unit') ->
Format.fprintf formatter "%a%s %s"
print_space add_space
str unit';
true
| Float_dimension (str, unit', _) ->
Format.fprintf formatter "%a%s%s"
print_space add_space
str unit';
true
| Bracket_block elems ->
Format.fprintf formatter "[%a]"
(* There is no need to add a space here, as the bracket as attribute
cannot appear detachedfrom any selector *)
(print_block is_selector) elems;
true
| Paren_block elems ->
Format.fprintf formatter "%a(%a)"
print_space add_space
(print_block is_selector) elems;
true
| Function (name, elems) ->
let printer = print_coma in
Format.fprintf formatter "%a%s(%a)"
print_space add_space
(fst name)
(print_block ~printer is_selector) (fst elems);
true
let print_important
: template -> Format.formatter -> bool with_loc -> unit
= fun template formatter (is_important, _) ->
match is_important with
| true -> Format.fprintf formatter template.important
| false -> ()
let rec print_brace_block
: template -> Format.formatter -> Brace_block.t -> unit
= fun template formatter -> function
| Empty -> Format.fprintf formatter ";"
| Declaration_list d ->
Format.fprintf formatter template.declaration
(Format.pp_print_list ~pp_sep:pp_sep_column (print_declaration_list template)) (fst d)
| Stylesheet css ->
Format.fprintf formatter template.stylesheet
(Format.pp_print_list (print_rule template)) (fst css)
and print_at_rule
: template -> Format.formatter -> At_rule.t -> unit
= fun template formatter rule ->
Format.fprintf formatter template.at_rule
(fst rule.name)
(print_block true ~add_space:true) (fst rule.prelude)
(print_brace_block template) rule.block
and print_declaration
: template -> Format.formatter -> Css.Types.Declaration.t -> unit
= fun template formatter {name; value; important; _ } ->
Format.fprintf formatter "%s:%a%a"
(fst name)
(print_block false) (fst value)
(print_important template) important
and print_declaration_list
: template -> Format.formatter -> Css.Types.Declaration_list.kind -> unit
= fun template formatter -> function
| Declaration decl -> print_declaration template formatter decl
| At_rule rule -> print_at_rule template formatter rule
and print_style_rule
: template -> Format.formatter -> Css.Types.Style_rule.t -> unit
= fun template formatter rule ->
Format.fprintf formatter template.style_rule
(print_block true) (fst rule.prelude)
(Format.pp_print_list ~pp_sep:pp_sep_column (print_declaration_list template)) (fst rule.block)
and print_rule
: template -> Format.formatter -> Css.Types.Rule.t -> unit
= fun template formatter -> function
| Rule.Style_rule style ->
print_style_rule template formatter style
| Rule.At_rule rule ->
print_at_rule template formatter rule
let css
: template -> Format.formatter -> Css.Types.Stylesheet.t -> unit
= fun template formatter css ->
Format.fprintf formatter template.main_css
(Format.pp_print_list (print_rule template)) (fst css)
|
