# frozen_string_literal: true require ‘mail/utilities’ require ‘mail/parser_tools’

begin

original_verbose, $VERBOSE = $VERBOSE, nil

%%{

machine date_time;
alphtype int;

# Phrase
action phrase_s { phrase_s = p }
action phrase_e {
  phrase_lists.phrases << chars(data, phrase_s, p-1) if phrase_s
  phrase_s = nil
}

# No-op actions
action address_s {}
action address_e {}
action angle_addr_s {}
action ctime_date_s {}
action ctime_date_e {}
action comment_e {}
action comment_s {}
action domain_e {}
action domain_s {}
action local_dot_atom_e {}
action local_dot_atom_pre_comment_e {}
action local_dot_atom_pre_comment_s {}
action local_dot_atom_s {}
action qstr_e {}
action qstr_s {}
action date_s {}
action date_e {}
action time_s {}
action time_e {}
action local_quoted_string_s {}
action local_quoted_string_e {}
action obs_domain_list_s {}
action obs_domain_list_e {}
action group_name_s {}
action group_name_e {}
action msg_id_s {}
action msg_id_e {}
action received_tokens_s {}
action received_tokens_e {}

include rfc5322 "rfc5322.rl";
main := phrase_lists;

}%%

module Mail::Parsers

class PhraseListsParser
  extend Mail::ParserTools

  PhraseListsStruct = Struct.new(:phrases, :error)

  %%write data noprefix;

  def self.parse(data)
    data = data.dup.force_encoding(Encoding::ASCII_8BIT) if data.respond_to?(:force_encoding)

    raise Mail::Field::NilParseError.new(Mail::PhraseList) if data.nil?

    # Parser state
    phrase_lists = PhraseListsStruct.new([])
    phrase_s = nil

    # 5.1 Variables Used by Ragel
    p = 0
    eof = pe = data.length
    stack = []

    %%write init;
    %%write exec;

    if p != eof || cs < %%{ write first_final; }%%
      raise Mail::Field::IncompleteParseError.new(Mail::PhraseList, data, p)
    end

    phrase_lists
  end
end

end

ensure

$VERBOSE = original_verbose

end