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require 'active_support/core_ext/string/filters'
module ActiveRecord
module ConnectionAdapters
module PostgreSQL
module OID # :nodoc:
class Range < Type::Value # :nodoc:
attr_reader :subtype, :type
def initialize(subtype, type = :range)
@subtype = subtype
@type = type
end
def type_cast_for_schema(value)
value.inspect.gsub('Infinity', '::Float::INFINITY')
end
def cast_value(value)
return if value == 'empty'
return value if value.is_a?(::Range)
extracted = extract_bounds(value)
from = type_cast_single extracted[:from]
to = type_cast_single extracted[:to]
if !infinity?(from) && extracted[:exclude_start]
raise ArgumentError, "The Ruby Range object does not support excluding the beginning of a Range. (unsupported value: '#{value}')"
end
::Range.new(from, to, extracted[:exclude_end])
end
def type_cast_for_database(value)
if value.is_a?(::Range)
from = type_cast_single_for_database(value.begin)
to = type_cast_single_for_database(value.end)
"[#{from},#{to}#{value.exclude_end? ? ')' : ']'}"
else
super
end
end
def ==(other)
other.is_a?(Range) &&
other.subtype == subtype &&
other.type == type
end
private
def type_cast_single(value)
infinity?(value) ? value : @subtype.type_cast_from_database(value)
end
def type_cast_single_for_database(value)
infinity?(value) ? '' : @subtype.type_cast_for_database(value)
end
def extract_bounds(value)
from, to = value[1..-2].split(',')
{
from: (value[1] == ',' || from == '-infinity') ? infinity(negative: true) : from,
to: (value[-2] == ',' || to == 'infinity') ? infinity : to,
exclude_start: (value[0] == '('),
exclude_end: (value[-1] == ')')
}
end
def infinity(negative: false)
if subtype.respond_to?(:infinity)
subtype.infinity(negative: negative)
elsif negative
-::Float::INFINITY
else
::Float::INFINITY
end
end
def infinity?(value)
value.respond_to?(:infinite?) && value.infinite?
end
end
end
end
end
end
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