Class: PrettyPrint::Buffer::StringBuffer

Inherits:

DefaultBuffer

• Object
• DefaultBuffer
• PrettyPrint::Buffer::StringBuffer

Defined in:

lib/syntax_tree/prettyprint.rb

Overview

This is an output buffer that wraps a string output object. It provides a trim! method that trims off trailing whitespace from the string using gsub!.

Instance Attribute Summary

Attributes inherited from DefaultBuffer

#output

Instance Method Summary

• #initialize(output = "".dup) ⇒ StringBuffer constructor

  A new instance of StringBuffer.

• #trim! ⇒ Object

Methods inherited from DefaultBuffer

#<<

Constructor Details

#initialize(output = "".dup) ⇒ StringBuffer

Returns a new instance of StringBuffer.

# File 'lib/syntax_tree/prettyprint.rb', line 294

def initialize(output = "".dup)
  super(output)
end

Instance Method Details

#trim! ⇒ Object

# File 'lib/syntax_tree/prettyprint.rb', line 298

def trim!
  length = output.length
  output.gsub!(/[\t ]*\z/, "")
  length - output.length
end