Type::Parser(3) User Contributed Perl Documentation Type::Parser(3)

Type::Parser - parse type constraint strings

use v5.10;
use strict;
use warnings;

use Type::Parser qw( eval_type );
use Type::Registry;

my $reg = Type::Registry->for_me;
$reg->add_types("Types::Standard");

my $type = eval_type("Int | ArrayRef[Int]", $reg);

$type->check(10);        # true
$type->check([1..4]);    # true
$type->check({foo=>1});  # false

This module is covered by the Type-Tiny stability policy.

Generally speaking, you probably don't want to be using this module directly. Instead use the "lookup" method from Type::Registry which wraps it.

Parse the type constraint string into something like an AST.

If called in list context, also returns any "tail" found on the original string.

"extract_type($string, $registry)"
Compile a type constraint string into a Type::Tiny object.

If called in list context, also returns any "tail" found on the original string.

"eval_type($string, $registry)"
Compile a type constraint string into a Type::Tiny object.

Throws an error if the "tail" contains any non-whitespace character.

The following constants correspond to values returned by "$token->type".

"TYPE"
"QUOTELIKE"
"STRING"
"HEXNUM"
"CLASS"
"L_BRACKET"
"R_BRACKET"
"COMMA"
"SLURPY"
"UNION"
"INTERSECT"
"SLASH"
"NOT"
"L_PAREN"
"R_PAREN"
"MYSTERY"

Please report any bugs to https://github.com/tobyink/p5-type-tiny/issues.

Type::Registry.

Toby Inkster <tobyink@cpan.org>.

This software is copyright (c) 2013-2014, 2017-2023 by Toby Inkster.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.

2024-03-13 perl v5.38.2