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module RDF::N3::Algebra::Str
# The subject is a string; the object is is a regular expression in the perl, python style.
# It is true iff the string matches the regexp.
class Matches < RDF::N3::Algebra::ResourceOperator
NAME = :strMatches
URI = RDF::N3::Str.matches
##
# Resolves inputs as strings.
#
# @param [RDF::Term] resource
# @param [:subject, :object] position
# @return [RDF::Literal]
# @see RDF::N3::ResourceOperator#evaluate
def resolve(resource, position:)
resource if resource.literal?
end
# Neither subect nor object are considered inputs, and must be resolved before evaluation.
def input_operand
RDF::N3::List.new
end
##
# Tre if right, treated as a regular expression, matches left
#
# @param [RDF::Literal] left
# a simple literal
# @param [RDF::Literal] right
# a simple literal
# @return [RDF::Literal::Boolean] `true` or `false`
# @see https://www.w3.org/TR/xpath-functions/#regex-syntax
def apply(left, right)
RDF::Literal(Regexp.new(right.to_s).match?(left.to_s))
end
end
end
Version data entries
4 entries across 4 versions & 1 rubygems