Module Output

module Output: sig .. end
Intermediate output format before going to strings

type t 

type t' =
| Kwd' of string
| Ident' of Ulib.Text.t
| Num' of int

type id_annot =
| Term_const of bool * bool (*Term_const(is_quotation, needs_escaping)*)
| Term_field
| Term_method
| Term_var
| Term_var_toplevel
| Term_spec
| Type_ctor of bool * bool (*Term_ctor(is_quotation, needs_escaping)*)
| Type_var
| Nexpr_var
| Module_name
| Class_name
| Target
| Component
kind annotation for latex'd identifiers

constructing output

val emp : t
Empty output
val kwd : string -> t
kwd s constructs the output for keyword s
val num : int -> t
num i constructs the output for number i
val str : Ulib.Text.t -> t
str s constructs the output for string constant s
val ws : Ast.lex_skips -> t
val err : string -> t
err message is an error output. An exception is thrown with the given message if this output is created. Used for marking problems.
val meta : string -> t
meta s creates a string directly as output such that the formatting can't interfere with string s any more
val comment : string -> t
A comment
val comment_block : int option -> string list -> t
comment_block min_width_opt content comment a whole list of lines in a block.
val new_line : t
a new line
val space : t
a single space
val texspace : t
??? Unsure what it is. Some kind of tex specific space, similar to space, but treated slightly differently by the Latex backend. It seems to be for example removed at beginnings and ends of lines and multiple ones are collapsed into a single space.
val id : id_annot -> Ulib.Text.t -> t
An identifier
val (^) : t -> t -> t
o1 ^ o2 appends to outputs to each other
val flat : t list -> t
flat [o0; ...; on] appends all the outputs in the list, i.e. it does o0 ^ ... ^ on.
val concat : t -> t list -> t
concat sep [o0; ...; on] appends all the outputs in the list using the separator sep, i.e. it does o0 ^ sep ^ o1 ^ ... sep ^ tn.
val prefix_if_not_emp : t -> t -> t
prefix_if_not_emp o1 o2 returns o1 ^ o2 if o2 is not empty and emp otherwise

Pretty Printing


Blocks are used for pretty printing if the original whitespace should not be used. This is usually the case, if the source was generated by some macro, such that either no original spacing is present or it is likely to be broken. If the first argument of a block is true this block and all it's content is printed using OCaml's Format library. The other arguments of blocks correspond to blocks in the Format library. They describe indentation, the type of block and the content.
val block : bool -> int -> t -> t
val block_h : bool -> int -> t -> t
val block_v : bool -> int -> t -> t
val block_hv : bool -> int -> t -> t
val block_hov : bool -> int -> t -> t
val core : t -> t
core out is a marker for marking the most important part of some output. It marks for example the rhs of a definition. Together with extract_core this is used to sometimes only print the most essential part of some output
val remove_core : t -> t
remove_core o removes all occurences of core form t by replacing core o' with just o'.
val extract_core : t -> t list
extract_core o extracts all top-level cores from output o.


val remove_initial_ws : t -> t
removes intial whitespace (including comments) from output
val break_hint : bool -> int -> t
break_hint add_space ind is a general hint for a line-break. If add_space is set a space is added in case no line-break is needed. Otherwise a line-break with the given indentation ind is applied.
val break_hint_cut : t
break_hint_cut is short for break_hint false 0. It allows a newline at this posistion without indentation. If no newline is needed don't add any space.
val break_hint_space : int -> t
break_hint_space ind is short for break_hint true ind. It adds a space or a newline. If a newline is needed use the given indentation.
val ensure_newline : t
Make sure there is a newline starting here. This inserts a newline if necessary.

Output to Rope

val to_rope : Ulib.Text.t ->
(Ast.lex_skip -> Ulib.Text.t) ->
(t' -> t' -> bool) -> t -> Ulib.Text.t
to_rope quote_char lex_skips_to_rope need_space t formats the output t as an unicode text. The quote_char argument is used around strings. The function lex_skips_to_rope is used to format whitespace. Finally the function need_space is used to determine, whether an extra space is needed between simplified outputs.
val ml_comment_to_rope : Ast.ml_comment -> Ulib.Text.t
ml_comment_to_rope com formats an ML-comment as a text by putting (* and *) around it.

Latex Output

val to_rope_tex : t -> Ulib.Text.t
to_rope_tex t corresponds to to_rope for the Latex backend. Since it is used for only one backend, the backend parameters of to_rope can be hard-coded.
val to_rope_option_tex : t -> Ulib.Text.t option
to_rope_option_tex t is similar to to_rope_tex t. However, it checks whether the result is an empty text and returns None is in this case.
val tex_escape : Ulib.Text.t -> Ulib.Text.t
val tex_command_escape : Ulib.Text.t -> Ulib.Text.t
val tex_command_label : Ulib.Text.t -> Ulib.Text.t
val tex_command_name : Ulib.Text.t -> Ulib.Text.t