NAME

       Cucumber::TagExpressions::Node - Cucumber Tag expression components

SYNOPSIS

         use Cucumber::TagExpressions;

         my $expr = Cucumber::TagExpressions->parse( '@a and @b' );
         if ( $expr->evaluate( qw/x y z/ ) ) {
            say "The evaluation returned false";
         }

DESCRIPTION

       This module defines the components making up the tag expressions.

METHODS

   evaluate( @tags )
       Returns "true" when the tag set specified in $tags satisfies the condition(s) of the
       expression, "false" otherwise.

       @tags can be a list of tags to be used in the expression. It can also be a reference to a
       hash with the keys being the tags and the values being considered boolean values
       indicating whether the tag (key) is considered part of the tagset (true) or not (false).

   stringify
       Returns a string representation of the expression node.

NODE CLASSES

   Cucumber::TagExpressions::LiteralNode
       DESCRIPTION

       This node class returns "true" if the literal tag is specified as part of the tag-list in
       the expression evaluation.

       ATTRIBUTES

       tag

       The tag to test presence for.

   Cucumber::TagExpressions::AndNode
       DESCRIPTION

       This node class type evaluates one or more sub-expressions ("terms") and returns "false"
       if any of the terms does. It returns "true" if all of the terms return "true".

       ATTRIBUTES

       terms

       The sub-expressions to evaluate.

   Cucumber::TagExpressions::OrNode
       DESCRIPTION

       This node class type evaluates one or more sub-expressions ("terms") and returns "true" if
       any of the terms does. It returns "false" if all of the terms return "false".

       ATTRIBUTES

       terms

       The sub-expressions to evaluate.

   Cucumber::TagExpressions::NotNode
       DESCRIPTION

       This class wraps one of the other node class types, negating its result on evaluation.

       ATTRIBUTES

       expression

       The wrapped node class instance for which to negate the result.

   Cucumber::TagExpressions::ExpressionNode
       DESCRIPTION

       This class models the outer-most node in the tag expression; it wraps all other nodes and
       is the entry-point for tag expression evaluation.

       ATTRIBUTES

       sub_expression

       An instance of one of the other node class types.

LICENSE

       Please see the included LICENSE for the canonical version. In summary:

       The MIT License (MIT)

         Copyright (c) 2021 Erik Huelsmann
         Copyright (c) 2021 Cucumber Ltd

       This work is loosely derived from prior work of the same library for Ruby, called
       "cucumber-messages".