Module: RedParse::Stackable::Meta

Included in:
Node, Token
Defined in:
lib/redparse/node.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#boolean_identity_params ⇒ Object 



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# File 'lib/redparse/node.rb', line 138

def boolean_identity_params
  return @boolean_identity_params if defined?(@boolean_identity_params) and @boolean_identity_params
  @boolean_identity_params=
  if superclass.respond_to? :boolean_identity_params
    superclass.boolean_identity_params.dup
  else
    {}
  end
end

#identity_params ⇒ Object 



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# File 'lib/redparse/node.rb', line 129

def identity_params
  return @identity_params if defined?(@identity_params) and @identity_params
  @identity_params=
  if superclass.respond_to? :identity_params
    superclass.identity_params.dup
  else
    {}
  end
end

Instance Method Details

#build_exemplars ⇒ Object 



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# File 'lib/redparse/node.rb', line 95

def build_exemplars
  exemplars=[[self]]

  (boolean_identity_params.merge identity_params).each{|name,variations|
    todo=[]
    variations=variations.dup
    variations.each{|var|
      exemplars.each{|exm|
        res=exm.dup

        #res.send name+"=", var
        #res.send :define_method, name do var end
        Symbol|String|Integer|true|false|nil===var or fail #so inspect works as a quoting
        #eval "def res.#{name}; #{var.inspect} end"
        res.push name, var

        todo<<res #unless exemplars.include? res
      }
    }
    exemplars=todo
  }
  #by now, may be some exemplars with identical identities...
  #those duplicate identities should be culled
#          identities_seen={}
#          exemplars.delete_if{|ex|
#            idn=ex.identity_name
#            chuck_it=identities_seen[idn]
#            identities_seen[idn]=true
#            chuck_it
#          }

  return exemplars
end

#enumerate_exemplars ⇒ Object

old_exemplars=self.exemplars||=

exemplars=[]
variations.each{|var| old_exemplars.each{|exm| 
  exemplars<< res=exm.dup

  #res.send name+"=", var
  #res.send :define_method, name do var end
  Symbol|String|Integer|true|false|nil===var or fail #so inspect works as a quoting 
  eval "def res.#{name}; #{var.inspect} end"
}}
old_exemplars.replace exemplars



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# File 'lib/redparse/node.rb', line 92

def enumerate_exemplars
  @exemplars||= build_exemplars
end

#identity_param(name, *variations) ⇒ Object

declare name to be part of the identity of current class variations are the allowed values for name in this class keep variations simple: booleans, integers, symbols and strings only



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# File 'lib/redparse/node.rb', line 66

def identity_param name, *variations
  name=name.to_s
  list=
  if (variations-[true,false,nil]).empty?
    #const_get("BOOLEAN_IDENTITY_PARAMS") rescue const_set("BOOLEAN_IDENTITY_PARAMS",{})
      self.boolean_identity_params
  else
    #const_get("IDENTITY_PARAMS") rescue const_set("IDENTITY_PARAMS",{})
      self.identity_params
  end
  list[name]=variations
  return #old way to generate examplars below
=begin
  old_exemplars=self.exemplars||=[allocate]
  exemplars=[]
  variations.each{|var| old_exemplars.each{|exm| 
    exemplars<< res=exm.dup

    #res.send name+"=", var
    #res.send :define_method, name do var end
    Symbol|String|Integer|true|false|nil===var or fail #so inspect works as a quoting 
    eval "def res.#{name}; #{var.inspect} end"
  }}
  old_exemplars.replace exemplars
=end
end