Class: Sequitur::Formatter::BaseFormatter

Inherits:
Object
  • Object
show all
Defined in:
lib/sequitur/formatter/base_formatter.rb

Overview

Superclass for grammar formatters.

Direct Known Subclasses

BaseText, Debug

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(anIO) ⇒ BaseFormatter

Constructor. be placed.

Parameters:

  • anIO (IO) —

    an output IO where the formatter's result will



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# File 'lib/sequitur/formatter/base_formatter.rb', line 14

def initialize(anIO)
  @output = anIO
end

Instance Attribute Details

#output ⇒ Object

The IO output stream in which the formatter's result will be sent.



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# File 'lib/sequitur/formatter/base_formatter.rb', line 9

def output
  @output
end

Instance Method Details

#render(aGrmOrVisitor) ⇒ Object

Given a grammar or a grammar visitor, perform the visit and render the visit events in the output stream.

Parameters:



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# File 'lib/sequitur/formatter/base_formatter.rb', line 21

def render(aGrmOrVisitor)
  a_visitor = if aGrmOrVisitor.kind_of?(GrammarVisitor)
                aGrmOrVisitor
              else
                aGrmOrVisitor.visitor
              end

  a_visitor.subscribe(self)
  a_visitor.start
  a_visitor.unsubscribe(self)
end