Class: BEL::Completion::MatchNamespaceValueRule

Inherits:
Object
  • Object
show all
Includes:
Rule, Quoting
Defined in:
lib/bel/completion_rule.rb

Overview

MatchNamespaceValueRule defines a namespace value completion rule.

Constant Summary

Constants included from Quoting

Quoting::KeywordMatcher, Quoting::Keywords, Quoting::LenientQuotedMatcher, Quoting::NonWordMatcher, Quoting::QuoteNotEscapedMatcher, Quoting::StrictQuotedMatcher

Instance Method Summary collapse

Methods included from Quoting

#always_quote, #ensure_quotes, #identifier_value?, #quote, #quote_if_needed, #quoted?, #quotes_required?, #remove_quotes, #string_value?, #unquote, #unquoted?

Methods included from Rule

#apply

Instance Method Details

#_apply(token_list, active_token, active_token_index, options = {}) ⇒ Object 



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# File 'lib/bel/completion_rule.rb', line 191

def _apply(token_list, active_token, active_token_index, options = {})
  search     = options.delete(:search)
  namespaces = options.delete(:namespaces)
  return EMPTY_MATCH if !search || !namespaces || token_list.empty?

  if active_token.type == :IDENT && active_token.value.length > 1
    previous_token = token_list[active_token_index - 1]
    if previous_token and previous_token.type == :COLON
      # search within a namespace
      prefix_token = token_list[active_token_index - 2]
      if prefix_token and prefix_token.type == :IDENT
        namespace = namespaces.find(prefix_token.value.downcase).first
        if namespace
          return search.search(
            "#{active_token.value}*",
            :namespace_concept,
            namespace.uri.to_s,
            nil,
            :start => 0,
            :size  => 10,
            :exclude_identifier_schemes => false
          ).
            map { |search_result|
              map_namespace_value(search_result.pref_label)
            }.to_a
        end
      end
    else
      return search.search(
        "#{active_token.value}*",
        :namespace_concept,
        nil,
        nil,
        :start => 0,
        :size  => 10,
        :exclude_identifier_schemes => true
      ).
        map { |search_result|
          ns = namespaces.find(search_result.scheme_uri).first
          map_namespace_value_with_prefix(ns, search_result.pref_label)
        }.to_a
    end
  end

  return EMPTY_MATCH
end