# frozen_string_literal: true

require 'mocha/parameter_matchers/base_methods'

module Mocha
  module ParameterMatchers
    module Methods
      # Matches any object that matches +regexp+.
      #
      # @param [Regexp] regexp regular expression to match.
      # @return [RegexpMatches] parameter matcher.
      #
      # @see Expectation#with
      #
      # @example Actual parameter is matched by specified regular expression.
      #   object = mock()
      #   object.expects(:method_1).with(regexp_matches(/e/))
      #   object.method_1('hello')
      #   # no error raised
      #
      # @example Actual parameter is not matched by specified regular expression.
      #   object = mock()
      #   object.expects(:method_1).with(regexp_matches(/a/))
      #   object.method_1('hello')
      #   # error raised, because method_1 was not called with a parameter that matched the
      #   # regular expression
      def regexp_matches(regexp)
        RegexpMatches.new(regexp)
      end
    end

    # Parameter matcher which matches if specified regular expression matches actual paramter.
    class RegexpMatches
      include BaseMethods

      # @private
      def initialize(regexp)
        @regexp = regexp
      end

      # @private
      def matches?(available_parameters)
        parameter = available_parameters.shift
        return false unless parameter.respond_to?(:=~)

        parameter =~ @regexp
      end

      # @private
      def mocha_inspect
        "regexp_matches(#{@regexp.mocha_inspect})"
      end
    end
  end
end
