package pacomb

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Parsing library based on combinators and ppx extension to write languages

Install

Dune Dependency

github.com Readme Edit opam file Versions (3)

Authors

Maintainers

C

Christophe Raffalli <christophe@raffalli.eu>

Sources

1.1.tar.gz

sha256=863207bf0718a124f2d09222e7d14641cb065a50c4708d7fdda4aada43ab640e

md5=56207945b70db43e8ef4ed9d1a34c131

doc/pacomb/Pacomb/Regexp/index.html

Module `Pacomb.Regexp`Source

A small module for efficient regular expressions.

Sourcetype regexp =

| Chr of char
| Set of Charset.t
| Seq of regexp list
| Alt of regexp list
| Opt of regexp
| Str of regexp
| Pls of regexp
| Sav of regexp

Type of a regular expression.

Sourcetype t = regexp

Short synonym of regexp.

Sourceval pp : Format.formatter -> regexp -> unit

pp ff re outputs the regexp re to the formatter ff.

Sourceval accepts_empty : regexp -> bool

accepts_empty re tells whether the empty input is valid for re.

Sourceval accepted_first_chars : regexp -> Charset.t

accepted_first_chars re returns the set of characters that are possible, valid first characters for matching re.

Sourceexception Regexp_error of Input.buffer * Input.idx

Exception raised when a regexp does not match. Note that the given buffer and position correspond to the first character that cannot be matched.

Sourceval from_string : string -> regexp

from_string s convert a string into a regexp following Str syntax.

Sourceval regexp : ?name:string -> regexp -> string Lex.t

create a terminal from a regexp. Returns the whole matched string

Sourceval regexp_grps : ?name:string -> ?grps:int list -> regexp -> string list Lex.t

create a terminal from a regexp. Returns the groups list, last to finish to be parsed is first in the result. The optional argument grps allows selection of the produced groups. As usual, 0 means the whole regexp and n > 0 the sub string corresponding to the nth opening parenthesis.

Sourceval blank_regexp : string -> Blank.t

create a blank function from a string representing a regexp