Contents

require 'rhet-butler/yaml-type'

module RhetButler
  class LayoutRule
    include YamlType
    def initialize
      @match = {}
      @layout_args = nil
    end
    attr_accessor :match, :layout_type, :layout_args

    def self.optional_config
      %w[match]
    end

    def self.required_config
      %w[layout]
    end

    def init_with(coder)
      @config_hash =
        case coder.type
        when :seq
          { 'match' => coder.seq[0], 'layout' => coder.seq[1] }
        when :map
          coder.map
        else
          raise "Tried to configure a layout rule with non-sequence: #{coder.inspect}"
        end

      check_config_hash(@config_hash)

      value_from_config("match") do |value|
        if value == 'default'
          @match = {}
        else
          @match = value
        end
      end

      @layout_type, @layout_args = *@config_hash['layout']
    end

    def layout
      Arrangement[@layout_type].new(*(@layout_args||[]))
    end

    def match?(group)
      @match.all? do |key, value|
        target = group.metadata.fetch(key)
        value === target
      end
    rescue KeyError
      false
    end
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
rhet-butler-0.5.0	lib/rhet-butler/layout-rule.rb