Method: Jinx::MatchVisitor#match_reference

Defined in:
lib/jinx/resource/match_visitor.rb

#match_reference(source, target, attribute) ⇒ {Resource => Resource} (private)

Matches the given source and target attribute references. The match is performed by this visitor’s matcher.

Parameters:

  • attribute (Symbol) —

    the parent reference attribute

  • source (Resource) —

    the match visit source

  • target (Resource) —

    the match visit target

Returns:



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# File 'lib/jinx/resource/match_visitor.rb', line 131

def match_reference(source, target, attribute)
  srcs = source.send(attribute).to_enum
  tgts = target.send(attribute).to_enum
  
  # the match targets
  mtchd_tgts = Set.new
  # capture the matched targets and the the unmatched sources
  unmtchd_srcs = srcs.reject do |src|
    # the prior match, if any
    tgt = match_for(src)
    mtchd_tgts << tgt if tgt
  end
  
  # the unmatched targets
  unmtchd_tgts = tgts.difference(mtchd_tgts)
  logger.debug { "#{qp} matching #{unmtchd_tgts.qp}..." } if @verbose and not unmtchd_tgts.empty?
  # match the residual targets and sources
  rsd_mtchs = @matcher.match(unmtchd_srcs, unmtchd_tgts, source, attribute)
  # add residual matches
  rsd_mtchs.each { |src, tgt| add_match(src, tgt) }
  logger.debug { "#{qp} matched #{rsd_mtchs.qp}..." } if @verbose and not rsd_mtchs.empty?
  # The source => target match hash.
  # If there is a copier, then copy each unmatched source.
  matches = srcs.to_compact_hash { |src| match_for(src) or copy_unmatched(src) }
  
  matches
end