Class: Rley::Formatter::BaseFormatter

Inherits:

Object

• Object
• Rley::Formatter::BaseFormatter

Defined in:

lib/rley/formatter/base_formatter.rb

Overview

Superclass for parse tree formatters.

Direct Known Subclasses

Asciitree, BracketNotation, Debug, Json

Instance Attribute Summary

• #output ⇒ IO readonly

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

Instance Method Summary

• #initialize(anIO) ⇒ BaseFormatter constructor

  Constructor.

• #render(aVisitor) ⇒ Object

  Given a parse tree visitor, perform the visit and render the visit events in the output stream.

Constructor Details

#initialize(anIO) ⇒ BaseFormatter

Constructor. be placed.

Parameters:

• anIO (IO) —

  an output IO where the formatter's result will

# File 'lib/rley/formatter/base_formatter.rb', line 15

def initialize(anIO)
  @output = anIO
end

Instance Attribute Details

#output ⇒ IO (readonly)

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

Returns:

• (IO) —

  The output stream for the formatter.

# File 'lib/rley/formatter/base_formatter.rb', line 10

def output
  @output
end

Instance Method Details

#render(aVisitor) ⇒ Object

Given a parse tree visitor, perform the visit and render the visit events in the output stream.

Parameters:

• aVisitor (ParseTreeVisitor)

# File 'lib/rley/formatter/base_formatter.rb', line 22

def render(aVisitor)
  aVisitor.subscribe(self)
  aVisitor.start
  aVisitor.unsubscribe(self)
end