diff options
Diffstat (limited to 'activesupport/lib/active_support/duration.rb')
| -rw-r--r-- | activesupport/lib/active_support/duration.rb | 203 |
1 files changed, 194 insertions, 9 deletions
diff --git a/activesupport/lib/active_support/duration.rb b/activesupport/lib/active_support/duration.rb index 003f6203ef..fe1058762b 100644 --- a/activesupport/lib/active_support/duration.rb +++ b/activesupport/lib/active_support/duration.rb @@ -1,5 +1,10 @@ +# frozen_string_literal: true + require "active_support/core_ext/array/conversions" +require "active_support/core_ext/module/delegation" require "active_support/core_ext/object/acts_like" +require "active_support/core_ext/string/filters" +require "active_support/deprecation" module ActiveSupport # Provides accurate date and time measurements using Date#advance and @@ -7,6 +12,100 @@ module ActiveSupport # # 1.month.ago # equivalent to Time.now.advance(months: -1) class Duration + class Scalar < Numeric #:nodoc: + attr_reader :value + delegate :to_i, :to_f, :to_s, to: :value + + def initialize(value) + @value = value + end + + def coerce(other) + [Scalar.new(other), self] + end + + def -@ + Scalar.new(-value) + end + + def <=>(other) + if Scalar === other || Duration === other + value <=> other.value + elsif Numeric === other + value <=> other + else + nil + end + end + + def +(other) + if Duration === other + seconds = value + other.parts[:seconds] + new_parts = other.parts.merge(seconds: seconds) + new_value = value + other.value + + Duration.new(new_value, new_parts) + else + calculate(:+, other) + end + end + + def -(other) + if Duration === other + seconds = value - other.parts[:seconds] + new_parts = other.parts.map { |part, other_value| [part, -other_value] }.to_h + new_parts = new_parts.merge(seconds: seconds) + new_value = value - other.value + + Duration.new(new_value, new_parts) + else + calculate(:-, other) + end + end + + def *(other) + if Duration === other + new_parts = other.parts.map { |part, other_value| [part, value * other_value] }.to_h + new_value = value * other.value + + Duration.new(new_value, new_parts) + else + calculate(:*, other) + end + end + + def /(other) + if Duration === other + value / other.value + else + calculate(:/, other) + end + end + + def %(other) + if Duration === other + Duration.build(value % other.value) + else + calculate(:%, other) + end + end + + private + def calculate(op, other) + if Scalar === other + Scalar.new(value.public_send(op, other.value)) + elsif Numeric === other + Scalar.new(value.public_send(op, other)) + else + raise_type_error(other) + end + end + + def raise_type_error(other) + raise TypeError, "no implicit conversion of #{other.class} into #{self.class}" + end + end + SECONDS_PER_MINUTE = 60 SECONDS_PER_HOUR = 3600 SECONDS_PER_DAY = 86400 @@ -24,6 +123,8 @@ module ActiveSupport years: SECONDS_PER_YEAR }.freeze + PARTS = [:years, :months, :weeks, :days, :hours, :minutes, :seconds].freeze + attr_accessor :value, :parts autoload :ISO8601Parser, "active_support/duration/iso8601_parser" @@ -32,7 +133,7 @@ module ActiveSupport class << self # Creates a new Duration from string formatted according to ISO 8601 Duration. # - # See {ISO 8601}[http://en.wikipedia.org/wiki/ISO_8601#Durations] for more information. + # See {ISO 8601}[https://en.wikipedia.org/wiki/ISO_8601#Durations] for more information. # This method allows negative parts to be present in pattern. # If invalid string is provided, it will raise +ActiveSupport::Duration::ISO8601Parser::ParsingError+. def parse(iso8601duration) @@ -74,6 +175,29 @@ module ActiveSupport new(value * SECONDS_PER_YEAR, [[:years, value]]) end + # Creates a new Duration from a seconds value that is converted + # to the individual parts: + # + # ActiveSupport::Duration.build(31556952).parts # => {:years=>1} + # ActiveSupport::Duration.build(2716146).parts # => {:months=>1, :days=>1} + # + def build(value) + parts = {} + remainder = value.to_f + + PARTS.each do |part| + unless part == :seconds + part_in_seconds = PARTS_IN_SECONDS[part] + parts[part] = remainder.div(part_in_seconds) + remainder = (remainder % part_in_seconds).round(9) + end + end + + parts[:seconds] = remainder + + new(value, parts) + end + private def calculate_total_seconds(parts) @@ -86,6 +210,25 @@ module ActiveSupport def initialize(value, parts) #:nodoc: @value, @parts = value, parts.to_h @parts.default = 0 + @parts.reject! { |k, v| v.zero? } + end + + def coerce(other) #:nodoc: + if Scalar === other + [other, self] + else + [Scalar.new(other), self] + end + end + + # Compares one Duration with another or a Numeric to this Duration. + # Numeric values are treated as seconds. + def <=>(other) + if Duration === other + value <=> other.value + elsif Numeric === other + value <=> other + end end # Adds another Duration or a Numeric to this Duration. Numeric values @@ -109,6 +252,42 @@ module ActiveSupport self + (-other) end + # Multiplies this Duration by a Numeric and returns a new Duration. + def *(other) + if Scalar === other || Duration === other + Duration.new(value * other.value, parts.map { |type, number| [type, number * other.value] }) + elsif Numeric === other + Duration.new(value * other, parts.map { |type, number| [type, number * other] }) + else + raise_type_error(other) + end + end + + # Divides this Duration by a Numeric and returns a new Duration. + def /(other) + if Scalar === other + Duration.new(value / other.value, parts.map { |type, number| [type, number / other.value] }) + elsif Duration === other + value / other.value + elsif Numeric === other + Duration.new(value / other, parts.map { |type, number| [type, number / other] }) + else + raise_type_error(other) + end + end + + # Returns the modulo of this Duration by another Duration or Numeric. + # Numeric values are treated as seconds. + def %(other) + if Duration === other || Scalar === other + Duration.build(value % other.value) + elsif Numeric === other + Duration.build(value % other) + else + raise_type_error(other) + end + end + def -@ #:nodoc: Duration.new(-value, parts.map { |type, number| [type, -number] }) end @@ -180,6 +359,7 @@ module ActiveSupport sum(1, time) end alias :from_now :since + alias :after :since # Calculates a new Time or Date that is as far in the past # as this Duration represents. @@ -187,11 +367,14 @@ module ActiveSupport sum(-1, time) end alias :until :ago + alias :before :ago def inspect #:nodoc: + return "0 seconds" if parts.empty? + parts. reduce(::Hash.new(0)) { |h, (l, r)| h[l] += r; h }. - sort_by { |unit, _ | [:years, :months, :weeks, :days, :hours, :minutes, :seconds].index(unit) }. + sort_by { |unit, _ | PARTS.index(unit) }. map { |unit, val| "#{val} #{val == 1 ? unit.to_s.chop : unit.to_s}" }. to_sentence(locale: ::I18n.default_locale) end @@ -200,18 +383,12 @@ module ActiveSupport to_i end - def respond_to_missing?(method, include_private = false) #:nodoc: - @value.respond_to?(method, include_private) - end - # Build ISO 8601 Duration string for this duration. # The +precision+ parameter can be used to limit seconds' precision of duration. def iso8601(precision: nil) ISO8601Serializer.new(self, precision: precision).serialize end - delegate :<=>, to: :value - private def sum(sign, time = ::Time.current) @@ -232,8 +409,16 @@ module ActiveSupport end end + def respond_to_missing?(method, _) + value.respond_to?(method) + end + def method_missing(method, *args, &block) - value.send(method, *args, &block) + value.public_send(method, *args, &block) + end + + def raise_type_error(other) + raise TypeError, "no implicit conversion of #{other.class} into #{self.class}" end end end |