Class: Algebrick::ProductConstructors::Abstract

Inherits:

Object

• Object
• Algebrick::ProductConstructors::Abstract

show all

Extended by:

TypeCheck

Includes:

Value

Defined in:

lib/algebrick/product_constructors/abstract.rb

Instance Attribute Summary (collapse)

• - (Object) fields readonly

  Returns the value of attribute fields.

Class Method Summary (collapse)

• + (Object) name
• + (Object) to_s
• + (Object) type
• + (Object) type=(type)

Instance Method Summary (collapse)

• - (Object) ==(other)
• - (Abstract) initialize(*fields) constructor

  A new instance of Abstract.

• - (Object) to_a
• - (Object) to_ary
• - (Object) type
• - (Object) update(*fields)

Methods included from TypeCheck

Child!, Child?, Match!, Match?, Type!, Type?, error

Methods included from Value

#inspect, #pretty_print, #to_s

Methods included from Matching

#any, #match, match_value, #on

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# File 'lib/algebrick/product_constructors/abstract.rb', line 22

def initialize(*fields)
  if fields.size == 1 && fields.first.is_a?(Hash)
    fields = type.field_names.map { |k| fields.first[k] }
  end
  @fields = fields.zip(self.class.type.fields).map { |field, type| Type! field, type }.freeze
end

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# File 'lib/algebrick/product_constructors/abstract.rb', line 20

def fields
  @fields
end

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# File 'lib/algebrick/product_constructors/abstract.rb', line 50

def self.name
  @type.to_s
end

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# File 'lib/algebrick/product_constructors/abstract.rb', line 54

def self.to_s
  name
end

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# File 'lib/algebrick/product_constructors/abstract.rb', line 42

def self.type
  @type || raise
end

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# File 'lib/algebrick/product_constructors/abstract.rb', line 58

def self.type=(type)
  Type! type, ProductVariant
  raise if @type
  @type = type
  include type
end

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# File 'lib/algebrick/product_constructors/abstract.rb', line 37

def ==(other)
  return false unless other.kind_of? self.class
  @fields == other.fields
end

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# File 'lib/algebrick/product_constructors/abstract.rb', line 33

def to_a
  @fields
end

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# File 'lib/algebrick/product_constructors/abstract.rb', line 29

def to_ary
  @fields
end

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# File 'lib/algebrick/product_constructors/abstract.rb', line 46

def type
  self.class.type
end

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# File 'lib/algebrick/product_constructors/abstract.rb', line 65

def update(*fields)
  raise NotImplementedError
end