Class: Rstruct::Registry

Inherits:
Object
  • Object
show all
Defined in:
lib/rstruct/registry.rb

Constant Summary collapse

DEFAULT_REGISTRY = 
new(:default)

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, *inherits) ⇒ Registry

Returns a new instance of Registry.



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# File 'lib/rstruct/registry.rb', line 13

def initialize(name, *inherits)
  @name = name.to_sym
  @registry = Hash.new()

  @inherits = []
  if @name != :default
    @inherits << DEFAULT_REGISTRY 
  end
  @inherits.concat(inherits).uniq!
end

Instance Attribute Details

#inherits ⇒ Object (readonly)

Returns the value of attribute inherits.



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# File 'lib/rstruct/registry.rb', line 11

def inherits
  @inherits
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/rstruct/registry.rb', line 11

def name
  @name
end

Instance Method Details

#get(typ) ⇒ Object Also known as: [] 



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# File 'lib/rstruct/registry.rb', line 32

def get(typ)
  if t=@registry[typ] 
    return t
  else
    @inherits.each do |inc|
      if t=inc.get(typ)
        return t
      end
    end
    return nil
  end
end

#register(typ, *names) ⇒ Object 



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# File 'lib/rstruct/registry.rb', line 58

def register(typ, *names)
  names.each do |n|
    set(n.to_sym,typ)
  end
end

#set(n, typ) ⇒ Object Also known as: []= 



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# File 'lib/rstruct/registry.rb', line 47

def set(n,typ)
  if n.nil?
    raise(TypeConflictError, "can't register nil type")
  elsif v=get(n)
    raise(TypeConflictError, "type already registered: #{n} => #{v.inspect}" ) 
  end
  @registry[n]=typ
end

#typedef(p, t, opts = {}) ⇒ Object 



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# File 'lib/rstruct/registry.rb', line 24

def typedef(p,t,opts={})
  if (pt = get(p))
    set(t, pt)
  else
    raise(InvalidTypeError, "unknown type: #{p}")
  end
end