Class: Phrase

Inherits:
Object
  • Object
show all
Defined in:
lib/dunmanifestin/phrase.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(dsl_string = self.class.list.constrained_sample) ⇒ Phrase

Returns a new instance of Phrase.



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# File 'lib/dunmanifestin/phrase.rb', line 22

def initialize dsl_string = self.class.list.constrained_sample
  raise "Try again." unless dsl_string
  compile parse dsl_string
end

Class Method Details

.list(new_list = nil, multiline_document = false) ⇒ Object 



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# File 'lib/dunmanifestin/phrase.rb', line 6

def self.list new_list = nil, multiline_document = false
  return (@list || List.new) unless new_list

  new_list = new_list.split_on_newlines_and_strip if new_list.is_a?(String) unless multiline_document
  new_list = [new_list] if multiline_document

  new_list.map! do |line|
    multiplier_regex = /^\d+@/
    multiplier = line.match(multiplier_regex).to_s.to_i
    multiplier = 1 if multiplier < 1
    [line.gsub(multiplier_regex, '')] * multiplier
  end.flatten!.reject! { |i| i.nil? || i.empty? }

  @list = new_list
end

Instance Method Details

#article? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/dunmanifestin/phrase.rb', line 123

def article?;    !!@article    end

#capitalize? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/dunmanifestin/phrase.rb', line 124

def capitalize?; !!@capitalize end

#compile(parsed_dsl) ⇒ Object 



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# File 'lib/dunmanifestin/phrase.rb', line 27

def compile parsed_dsl
  template = parsed_dsl[:template]

  @variable_classes = []
  @inflection_delegates = {
    :plural => [],
    :possessive => [],
    :article => [],
    :capitalize => [],
  }

  inflections = []

  parsed_dsl[:variables].each_with_index do |variable, i|
    rough_var_class = variable[:rough_variable_class]

    variable[:inflections_to_delegate].each do |inflection|
      @inflection_delegates[inflection.to_sym] << i
    end

    inflections[i] = []

    variable[:inflections_to_apply].each do |inflection|
      inflections[i] << inflection.to_sym
    end

    begin
      @variable_classes << "Phrase::#{rough_var_class.camelize}".constantize
    rescue NameError
      @variable_classes << empty_phrase_class(rough_var_class)
    end
  end

  @to_s_proc = -> {
    self.variables.each_with_index do |variable, i|
      inflections[i].each { |inflection| variable.inflect inflection }
    end
    template.zip(self.variables).flatten.map(&:to_s).join('')
  }
end

#inflect(inflection) ⇒ Object 



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# File 'lib/dunmanifestin/phrase.rb', line 132

def inflect inflection
  return self unless @inflection_delegates
  self.instance_variable_set("@#{inflection}", true)
  return (titleize! && self) if inflection == :titleize

  delegates = @inflection_delegates[inflection]
  delegates.each { |delegate| variables[delegate].inflect inflection }
  self
rescue NoMethodError
  puts "==> Failed to inflect: .#{inflection}?"
  puts "==> Valid inflections are: plural, possessive, article, capitalize, titleize"
  self
end

#parse(dsl_string = @dsl_string) ⇒ Object 



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# File 'lib/dunmanifestin/phrase.rb', line 68

def parse dsl_string = @dsl_string
  # A dsl string like "[adjective] [noun.possessive#plural]" will be parsed into
  # { :variables =>
  #   [ { :rough_variable_class => 'adjective',
  #       :inflections_to_delegate => [],
  #       :inflections_to_apply => []
  #     },
  #     { :rough_variable_class => 'noun',
  #       :inflections_to_delegate => [:plural],
  #       :inflections_to_apply => [:possessive]
  #     }
  #   ],
  #   :template => ["", " "]
  # }
  #
  tokens = dsl_string.split(/[\[\]]/)
  template = []; variables = [];

  tokens.each_with_index do |token, i|
    if i % 2 == 0
      template << token
    else
      variables << token
    end
  end

  hash = {:variables => [], :template => template}

  variables.each_with_index do |variable, i|
    components = variable.split(/\b/)
    rough_var_class = components.shift
    inflections_to_delegate = []
    inflections_to_apply = []

    components.each_with_index do |v, k|
      inflections_to_delegate << v if components[k-1] == '#'
      inflections_to_apply << v if components[k-1] == '.'
    end

    hash[:variables] << {
      :rough_variable_class => rough_var_class,
      :inflections_to_delegate => inflections_to_delegate,
      :inflections_to_apply => inflections_to_apply,
    }
  end

  hash
end

#plural? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/dunmanifestin/phrase.rb', line 121

def plural?;     !!@plural     end

#possessive? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/dunmanifestin/phrase.rb', line 122

def possessive?; !!@possessive end

#render_inflections(string) ⇒ Object 



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# File 'lib/dunmanifestin/phrase.rb', line 150

def render_inflections string
  # Good, now turn this into a stateless function.
  string = string.pluralize if plural? && @inflection_delegates[:plural].empty?
  string = (string =~ /s$/) ? "#{string}'" : "#{string}'s" if plural? && possessive? && @inflection_delegates[:possessive].empty?
  string = "#{string}'s" if !plural? && possessive? && @inflection_delegates[:possessive].empty?
  string = (string =~ /^[aeiou]/i) ? "an #{string}" : "a #{string}" if !plural? && article? && @inflection_delegates[:article].empty?
  string = string[0].capitalize + string[1 .. -1] if capitalize?
  string = string.titleize if titleize?

  string
end

#titleize! ⇒ Object 



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# File 'lib/dunmanifestin/phrase.rb', line 127

def titleize!
  delegates = @inflection_delegates[:capitalize]
  delegates.each { |delegate| variables[delegate].capitalize! }
end

#titleize? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/dunmanifestin/phrase.rb', line 125

def titleize?;   !!@titleize   end

#to_s ⇒ Object 



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# File 'lib/dunmanifestin/phrase.rb', line 146

def to_s
  render_inflections @to_s_proc.call
end

#variables ⇒ Object 



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# File 'lib/dunmanifestin/phrase.rb', line 117

def variables
  @variables ||= @variable_classes.map(&:new)
end