Class: Lisp::Format::Directives::CharacterDirective

Inherits:
Directive show all
Defined in:
lib/carat/lisp-format.rb

Overview

Parent class for character outputting directives, such as ~% (NewLine), ~| (NewPage), and ~~ (Tilde), which output the same character a given number of times.

Direct Known Subclasses

NewLine, NewPage, Tilde

Instance Attribute Summary

Attributes inherited from Directive

#pos

Instance Method Summary collapse

Methods inherited from Directive

#join

Constructor Details

#initialize(params, modifiers, top, pos, ch) ⇒ CharacterDirective

Create and set the character to use to ch.



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# File 'lib/carat/lisp-format.rb', line 1267

def initialize(params, modifiers, top, pos, ch)
  super params, modifiers, top, pos
  @ch = ch
end

Instance Method Details

#execute(state) ⇒ Object

Outputs the specific character (depending on the sub-classing directive) a given number of times. The full form is

~n[%|~]

with the following interpretations

n (1)

number of times to output the specific character.



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# File 'lib/carat/lisp-format.rb', line 1278

def execute(state)
  n = param(0, state, 1)
  state.output(@ch.chr * n)
end