# File lib/mail/parsers/rfc2822.rb, line 2019 def _nt_local_part start_index = index if node_cache[:local_part].has_key?(index) cached = node_cache[:local_part][index] @index = cached.interval.end if cached return cached end i0 = index r1 = _nt_local_dot_atom if r1 r0 = r1 else r2 = _nt_quoted_string if r2 r0 = r2 else r3 = _nt_obs_local_part if r3 r0 = r3 else @index = i0 r0 = nil end end end node_cache[:local_part][start_index] = r0 r0 end