---
name: "Type::Parser"
section: "3pm"
platform: "linux"
package: "perl-type-tiny"
version: "2.010001-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/Type::Parser"
---

# Type::Parser(3pm)

parse type constraint strings

## NAME

Type::Parser - parse type constraint strings

## SYNOPSIS

```
 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
```

## STATUS

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

## DESCRIPTION

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

### Functions

- parse($string)

  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.

### Constants

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"

  ## BUGS

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

## SEE ALSO

Type::Registry.

## AUTHOR

Toby Inkster \<tobyink@cpan.org\>.

## COPYRIGHT AND LICENCE

This software is copyright (c) 2013-2014, 2017-2025 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.

## DISCLAIMER OF WARRANTIES

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.