Class: YARD::Handlers::Ruby::YieldHandler

Inherits:
Base
  • Object
show all
Defined in:
lib/yard/handlers/ruby/yield_handler.rb

Overview

Handles 'yield' calls

Constant Summary

Instance Attribute Summary

Attributes inherited from Base

#namespace, #owner, #parser, #scope, #statement, #visibility

Instance Method Summary (collapse)

Methods inherited from Base

handles?, meta_type, method_call, #parse_block

Methods included from Parser::Ruby

#s

Methods inherited from Base

clear_subclasses, #ensure_loaded!, handlers, handles, handles?, #initialize, namespace_only, namespace_only?, #parse_block, process, #push_state, #register, subclasses

Constructor Details

This class inherits a constructor from YARD::Handlers::Base

Instance Method Details

- (Object) process

Main processing callback



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# File 'lib/yard/handlers/ruby/yield_handler.rb', line 5

process do
  return unless owner.is_a?(MethodObject) # Only methods yield
  return if owner.has_tag? :yield         # Don't override yield tags
  return if owner.has_tag? :yieldparam    # Same thing.

  yieldtag = YARD::Tags::Tag.new(:yield, "", [])
  
  if statement.type == :yield
    statement.jump(:list).children.each do |item|
      if item == s(:var_ref, s(:kw, "self"))
        yieldtag.types << '_self'
        owner.docstring.add_tag YARD::Tags::Tag.new(:yieldparam, 
          "the object that the method was called on", owner.namespace.path, '_self')
      elsif item == s(:zsuper)
        yieldtag.types << '_super'
        owner.docstring.add_tag YARD::Tags::Tag.new(:yieldparam, 
          "the result of the method from the superclass", nil, '_super')
      else
        yieldtag.types << item.source
      end
    end
  end
  
  owner.docstring.add_tag(yieldtag) unless yieldtag.types.empty?
end