Class: HealthSeven::Message::SegmentDef

Inherits:
Object
  • Object
show all
Defined in:
lib/health_seven/message.rb

Overview

GRAMMAR PART

Direct Known Subclasses

MessageDef

Instance Method Summary collapse

Constructor Details

#initialize(name, &block) ⇒ SegmentDef

Returns a new instance of SegmentDef.



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# File 'lib/health_seven/message.rb', line 12

def initialize(name, &block)
  @name = name
  @segments = []
  self.instance_eval(&block) if block_given?
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, &block) ⇒ Object 



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# File 'lib/health_seven/message.rb', line 39

def method_missing(name, &block)
  unless @dsl_off
    @segments<< SegmentDef.new(name, &block)
  else
    super
  end
end

Instance Method Details

#_children_enum ⇒ Object 



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# File 'lib/health_seven/message.rb', line 61

def _children_enum
  children = @segments.map do |s|
    s.dsl_off!
    res = s.rule_name
    if s.optional?
      if s.multiple?
        res<< "*"
      else
        res<< "?"
      end
    else
      res<< "+" if s.multiple?
    end
    res
  end
end

#dsl_off! ⇒ Object 



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# File 'lib/health_seven/message.rb', line 18

def dsl_off!
  @dsl_off = true
end

#multiple? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/health_seven/message.rb', line 35

def multiple?
  @name[3] == 's'
end

#optional? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/health_seven/message.rb', line 31

def optional?
  @name[-1] == '?'
end

#rule_name ⇒ Object 



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# File 'lib/health_seven/message.rb', line 27

def rule_name
  @name[0..2]
end

#seg_name ⇒ Object 



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# File 'lib/health_seven/message.rb', line 22

def seg_name
  return '' if @name == :message
  "'#{@name.to_s[0..2].upcase}'"
end

#to_gramar(gramar) ⇒ Object 



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# File 'lib/health_seven/message.rb', line 47

def to_gramar(gramar)
  gramar.push <<-RULE

 rule #{self.rule_name}
   #{seg_name} payload delim #{_children_enum.join(" ")} <HealthSeven::SegmentLiteral>
 end
 RULE

 @segments.each do |s|
   s.to_gramar(gramar)
 end
 gramar
end