Module Pretty_utils

module Pretty_utils: sig .. end

Pretty-printer utilities.
Consult the Plugin Development Guide for additional details.

pretty-printing to a string

val sfprintf : ('a, Format.formatter, unit, string) Pervasives.format4 -> 'a

Deprecated.Silicon-20161101 use Format.asprintf
Equivalent to Format.asprintf. Used for compatibility with OCaml < 4.01.

val ksfprintf : (string -> 'b) -> ('a, Format.formatter, unit, 'b) Pervasives.format4 -> 'a

similar to Format.kfprintf, but the continuation is given the result string instead of a formatter.
Since Magnesium-20151001

val to_string : ?margin:int -> (Format.formatter -> 'a -> unit) -> 'a -> string

pretty-prints the supplied value into a string. margin is the maximal width of the box before a line-break is inserted. See Format.set_margin

separators

val pp_print_string_fill : Format.formatter -> string -> unit

transforms every space in a string in breakable spaces.

val escape_underscores : string -> string

pretty printers for standard types

type sformat = (unit, Format.formatter, unit) Pervasives.format

type 'a formatter = Format.formatter -> 'a -> unit

type ('a, 'b) formatter2 = Format.formatter -> 'a -> 'b -> unit

val pp_list : ?pre:sformat ->
       ?sep:sformat ->
       ?last:sformat ->
       ?suf:sformat ->
       ?empty:sformat ->
       'a formatter -> 'a list formatter

pretty prints a list. The optional arguments stands for

the prefix to output before a non-empty list (default: open a box)
the separator between two elements (default: nothing)
the last separator to be put just before the last element (default:sep)
the suffix to output after a non-empty list (default: close box)
what to print if the list is empty (default: nothing)

Change in Silicon-20161101: new optional argument empty

val pp_array : ?pre:sformat ->
       ?sep:sformat ->
       ?suf:sformat ->
       ?empty:sformat ->
       (int, 'a) formatter2 -> 'a array formatter

pretty prints an array. The optional arguments stands for

the prefix to output before a non-empty array (default: open a box)
the separator between two elements (default: nothing)
the suffix to output after a non-empty array (default: close box)
what to print if the array is empty (default: nothing)

Change in Silicon-20161101: new optional argument empty

val pp_iter : ?pre:sformat ->
       ?sep:sformat ->
       ?suf:sformat ->
       (('a -> unit) -> 'b -> unit) ->
       'a formatter -> 'b formatter

pretty prints any structure using an iterator on it. The argument pre (resp. suf) is output before (resp. after) the iterator is started (resp. has ended). The optional argument sep is output bewteen two calls to the 'a formatter. Default: open a box for pre, close a box for suf, nothing for sep.

val pp_iter2 : ?pre:sformat ->
       ?sep:sformat ->
       ?suf:sformat ->
       ?between:sformat ->
       (('key -> 'v -> unit) -> 'a -> unit) ->
       'key formatter ->
       'v formatter -> 'a formatter

pretty prints any map-like structure using an iterator on it. The argument pre (resp. suf) is output before (resp. after) the iterator is started (resp. has ended). The optional argument sep is output bewteen two calls to the 'a formatter. The optional argument between is output between the key and the value. Default: open a box for pre, close a box for suf, nothing for sep, break-space for between.

val pp_opt : ?pre:sformat ->
       ?suf:sformat ->
       ?none:sformat ->
       'a formatter -> 'a option formatter

pretty-prints an optional value. Prefix and suffix default to "@" and "@" respectively. If the value is None, pretty-print using none.
Change in Silicon-20161101: new optional argument none

val pp_cond : ?pr_false:sformat ->
       bool -> sformat formatter

pp_cond cond f s pretty-prints s if cond is true and the optional pr_false, which defaults to nothing, otherwise

val pp_pair : ?pre:sformat ->
       ?sep:sformat ->
       ?suf:sformat ->
       'a formatter ->
       'b formatter -> ('a * 'b) formatter

pp_pair ?pre ?sep ?suf pp_a pp_b (a,b) pretty prints the pair (a,b), using the pretty printers pp_a and pp_b, with optional prefix/separator/suffix, whose default values are:

pre: open a box
sep: print a comma character
suf: close a box.

Since Magnesium-20151001

val pp_flowlist : ?left:sformat ->
       ?sep:sformat ->
       ?right:sformat ->
       'a formatter -> 'a list formatter

val pp_blocklist : ?left:sformat ->
       ?right:sformat ->
       'a formatter -> 'a list formatter

val pp_open_block : Format.formatter -> ('a, Format.formatter, unit) Pervasives.format -> 'a

val pp_close_block : Format.formatter -> ('a, Format.formatter, unit) Pervasives.format -> 'a

val pp_trail : 'a formatter -> 'a formatter

pretty-prints its contents inside an '(** ... **)' horizontal block trailed with '*'