Class: Jejune::Macro

Inherits:
Object
  • Object
show all
Includes:
Constants
Defined in:
lib/jejune/macro.rb

Constant Summary

Constants included from Constants

Constants::BROWSERS, Constants::CATCH_TYPES, Constants::CODE, Constants::DEFAULT_EXT, Constants::DELIMS, Constants::EXPRESSION_TYPES, Constants::FUNCTION_TYPES, Constants::OPEN_DELIM, Constants::OPERATOR_PRECEDENCE, Constants::PROPERTY_DEFINITION_TYPES, Constants::PROPERTY_TYPES

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(manager, tree) ⇒ Macro

Returns a new instance of Macro.



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# File 'lib/jejune/macro.rb', line 13

def initialize( manager, tree )
  @manager = manager
  #@tree    = tree
  @name    = tree[ 0 ].text
  
  if node = tree[ 1 ] and node.type == PARAMS
    @parameters = ParameterSet.study( node )
  else
    @parameters = ParameterSet.new
  end
  
  body_tokens = tree.last.tokens
  
  body_tokens.shift while t = body_tokens.first and t.type != LBRACE
  body_tokens.shift
  
  body_tokens.pop while t = body_tokens.last and t.type != RBRACE
  body_tokens.pop
  
  body_tokens.map! do | token |
    if token.type == ID and index = @parameters.include?( token.text )
      index
    else
      token.text
    end
  end
  
  @blueprint = body_tokens
end

Instance Attribute Details

#blueprint ⇒ Object

Returns the value of attribute blueprint.



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# File 'lib/jejune/macro.rb', line 11

def blueprint
  @blueprint
end

#manager ⇒ Object

Returns the value of attribute manager.



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# File 'lib/jejune/macro.rb', line 11

def manager
  @manager
end

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/jejune/macro.rb', line 11

def name
  @name
end

#parameters ⇒ Object

Returns the value of attribute parameters.



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# File 'lib/jejune/macro.rb', line 11

def parameters
  @parameters
end

Class Method Details

._load(serialized) ⇒ Object 



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# File 'lib/jejune/macro.rb', line 43

def self._load( serialized )
  macro = allocate
  macro.name, macro.parameters, macro.blueprint = Marshal.load( serialized )
  return macro
end

Instance Method Details

#_dump(depth) ⇒ Object 



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# File 'lib/jejune/macro.rb', line 49

def _dump( depth )
  Marshal.dump( [ @name, @parameters, @blueprint ] )
end

#apply(*params) ⇒ Object Also known as: expand 



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# File 'lib/jejune/macro.rb', line 53

def apply( *params )
  params =
    params.map do | i |
      if i.respond_to?( :tokens ) then i.tokens
      elsif TokenData::Token === i then [ i ]
      else i
      end
    end
  
  tokens = []
  for item in @blueprint
    case item
    when Fixnum
      tokens.concat( params[ item ] )
    else
      tokens << item
    end
  end
  
  @manager.translate( tokens.join( '' ) )
end