Module: Pione::Util::ParsletTransformerModule

Included in:
Lang::ConditionalBranchTransformer, Lang::ContextTransformer, Lang::DeclarationTransformer, Lang::ExprTransformer, Lang::LiteralTransformer
Defined in:
lib/pione/util/parslet-extension.rb

Overview

+ParsletTransformerModule+ enables parslet's transforms to be defined by multiple modules.

Class Method Summary collapse

Class Method Details

.included(mod) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/pione/util/parslet-extension.rb', line 119

def included(mod)
  singleton = class << mod; self; end
  create_pair_by(Parslet, Parslet::Transform).each do |name, orig|
    singleton.__send__(:define_method, name) do |*args, &b|
      orig.__send__(name, *args, &b)
    end
  end

  class << mod
    def included(klass)
      name = :@__transform_rules
      klass_rules = klass.instance_variable_get(name)
      klass_rules = klass_rules ? klass_rules + rules : rules
      klass.instance_variable_set(name, klass_rules)
    end
  end
end