class PG::BasicTypeRegistry::CoderMap

def coder_by_name(name)
	@coders_by_name[name]
end

def coder_by_oid(oid)
	@coders_by_oid[oid]
end

def initialize(result, coders_by_name, format, arraycoder)
	coder_map = {}
	_ranges, nodes = result.partition { |row| row['typinput'] == 'range_in' }
	leaves, nodes = nodes.partition { |row| row['typelem'].to_i == 0 }
	arrays, nodes = nodes.partition { |row| row['typinput'] == 'array_in' }
	# populate the enum types
	_enums, leaves = leaves.partition { |row| row['typinput'] == 'enum_in' }
	# enums.each do |row|
	#	coder_map[row['oid'].to_i] = OID::Enum.new
	# end
	# populate the base types
	leaves.find_all { |row| coders_by_name.key?(row['typname']) }.each do |row|
		coder = coders_by_name[row['typname']].dup
		coder.oid = row['oid'].to_i
		coder.name = row['typname']
		coder.format = format
		coder_map[coder.oid] = coder
	end
	_records_by_oid = result.group_by { |row| row['oid'] }
	# populate composite types
	# nodes.each do |row|
	#	add_oid row, records_by_oid, coder_map
	# end
	if arraycoder
		# populate array types
		arrays.each do |row|
			elements_coder = coder_map[row['typelem'].to_i]
			next unless elements_coder
			coder = arraycoder.new
			coder.oid = row['oid'].to_i
			coder.name = row['typname']
			coder.format = format
			coder.elements_type = elements_coder
			coder.needs_quotation = !DONT_QUOTE_TYPES[elements_coder.name]
			coder_map[coder.oid] = coder
		end
	end
	# populate range types
	# ranges.find_all { |row| coder_map.key? row['rngsubtype'].to_i }.each do |row|
	#	subcoder = coder_map[row['rngsubtype'].to_i]
	#	range = OID::Range.new subcoder
	#	coder_map[row['oid'].to_i] = range
	# end
	@coders = coder_map.values
	@coders_by_name = @coders.inject({}){|h, t| h[t.name] = t; h }
	@coders_by_oid = @coders.inject({}){|h, t| h[t.oid] = t; h }
	@typenames_by_oid = result.inject({}){|h, t| h[t['oid'].to_i] = t['typname']; h }
end