'use strict'

utils = require 'src/utils'
log = require 'src/log'

log = log.scope 'Document'

module.exports = (File) -> (file) ->
    {refs} = file

    forEachNodeRec = (node) ->
        for child in node.children
            unless child.children
                continue

            forEachNodeRec child

            unless ref = child.props['ref']
                continue

            if refs.hasOwnProperty(ref)
                log.warn "Ref must be unique; '#{ref}' duplicated"
                continue
            refs[ref] = child
        return

    forEachNodeRec file.node