Fix crash on subproperty parent name mismatch.

require 'jsduck/logger'

module JsDuck

  # Takes data from doc-comment and code that follows it and combines

  #

  # The main method merge() produces a hash as a result.

  class Merger

    # Allow passing in filename and line for error reporting

    attr_accessor :filename

    attr_accessor :linenr

    def initialize

      @filename = ""

      @linenr = 0

    end

    def merge(docs, code)

      case detect_doc_type(docs, code)

      when :class

        if it[:name] =~ /^(.+)\.([^.]+)$/

          it[:name] = $2

          parent = index[$1]

          if parent

            parent[:properties] = [] unless parent[:properties]

            parent[:properties] << it

          else

            Logger.instance.warn("Ignoring subproperty #{$1}.#{$2}, no parent found with name '#{$1}'.", @filename, @linenr)

          end

        else

          items << it

        end

      @links = {}

      merger = Merger.new

      merger.filename = @filename

      @docs = parse.map do |docset|

        merger.linenr = docset[:linenr]

        link(docset[:linenr], merger.merge(docset[:comment], docset[:code]))

      end

    end