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Params-Validate-Strict-0.41

Changes for version 0.41 - 2026-10-03

  • Enhancements
    • New types 'regex', 'handle', 'arraylike', 'hashlike', 'codelike', 'invocant' inspired by Params::Util. 'regex' validates a compiled qr// object. 'handle' validates file handles (glob ref, IO::Handle subclass, or anything with a defined fileno). '*like' variants are duck-typed: they accept both a raw ref and a blessed object that overloads the corresponding deref operator. 'invocant' accepts either a blessed object or a syntactically valid class-name string.
    • New semantic values 'identifier' and 'class_name': validate that a string value is a valid Perl bareword identifier ([A-Za-z_]\w*) or a valid package name (Foo::Bar form) respectively.
    • New rule keys 'classisa', 'subclass', 'classdoes': class-name string variants of 'isa'/'does' that test ->isa / ->DOES on a string class name rather than a blessed object. 'subclass' additionally requires the value to differ from the base class itself.
    • New rule key 'does' (instance): like 'isa' but tests ->DOES for role consumption. Requires type => 'object'.
    • New rule key 'driver': validates a class-name string, loads the module via require, and confirms ->isa of a given base class.
    • New 'aliases' rule key: a named parameter can now be found under one or more alternative input-key names. Aliased keys are never treated as unknown parameters. The validated result always uses the canonical key. Only named (hashref) input supports aliases; positional input ignores them.
    • New 'slurp' rule key (positional schemas only): collects all remaining positional arguments from 'position' onwards into an arrayref, enabling variadic positional signatures such as ($level, @messages). The parameter is implicitly optional (yields an empty arrayref when no args remain); combine with min => 1 to require at least one element.
    • New 'compile_schema' function (exported on request): captures a schema and optional keyword arguments into a reusable validator closure. Equivalent to validate_strict(schema => ..., input => ...) but avoids repeated argument-parsing overhead in hot paths.
  • Tests
    • t/unit.t: 19 new subtests covering aliases (canonical key, alias accepted, canonical precedence, unknown-param exemption, missing-both croaks), slurp (basic collection, empty slice, min=1 enforcement, no-min pass), and compile_schema (return type, non-ref schema croak, validation, result identity, opts forwarding).
    • t/unit.t: subtests covering all new types, semantics, and rule keys.

Documentation

README.md

Modules

Params::Validate::Strict
Validates a set of parameters against a schema
Params::Validate::Strict::BNF
compile a BNF grammar to a string matcher

Other files