Class: Trith::Function

Inherits:

Object

• Object
• Trith::Function

show all

Defined in:

lib/trith/function.rb

Overview

Constant Summary

URI =

RDF::URI("http://trith.org/lang/Function").freeze

Instance Attribute Summary (collapse)

• - (String) comment
• - (RDF::Resource) id
• - (Symbol) label

Instance Method Summary (collapse)

• - (Enumerator) each_statement(&block)
• - (Function) initialize(id = nil, options = {}, &block) constructor

  A new instance of Function.

• - (String) inspect

  Returns a developer-friendly representation of this function.

• - (Boolean) is_primitive? (also: #is_native?)

  Returns true if this is a primitive function.

• - (Enumerable<Symbol>) labels
• - (RDF::Graph) to_rdf

  Returns the RDF representation of this function.

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# File 'lib/trith/function.rb', line 18

def initialize(id = nil, options = {}, &block)
  @id = case id
    when nil then RDF::Node.new
    when RDF::Resource then id
    else RDF::Resource.new(id)
  end

  if block_given?
    case block.arity
      when 1 then block.call(self)
      else self.instance_eval(&block)
    end
  end
end

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# File 'lib/trith/function.rb', line 14

def comment
  @comment
end

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# File 'lib/trith/function.rb', line 8

def id
  @id
end

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# File 'lib/trith/function.rb', line 11

def label
  @label ||= id.to_s.sub(/^(.*)\/([^\/]+)$/, '\2').to_sym # FIXME
end

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# File 'lib/trith/function.rb', line 80

def each_statement(&block)
  to_rdf.each_statement(&block)
end

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# File 'lib/trith/function.rb', line 62

def inspect
  sprintf("#<%s:%#0x(%s)>", self.class.name, __id__, id.to_s)
end

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# File 'lib/trith/function.rb', line 52

def is_primitive?
  false # TODO
end

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# File 'lib/trith/function.rb', line 41

def labels
  [label] # FIXME
end

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# File 'lib/trith/function.rb', line 70

def to_rdf
  RDF::Graph.new(id) do |graph|
    graph << [id, RDF.type, Trith::Function::URI]
    graph << [id, RDF::RDFS.label, label]   if label
    graph << [id, RDF::RDFS.comment, label] if comment
  end
end