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"
"NOT"
"L_PAREN"
"R_PAREN"
"MYSTERY"

BUGS

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

AUTHOR

Toby Inkster <tobyink@cpan.org>.

COPYRIGHT AND LICENCE

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.