From 77ee522bf6c97352485fad3b72866f7ab424ecaf Mon Sep 17 00:00:00 2001 From: Geoff Buesing Date: Mon, 17 Mar 2008 02:40:28 +0000 Subject: TimeWithZone caches TZInfo::TimezonePeriod used for time conversion so that it can be reused, and enforces DST rules correctly when instance is created from a local time git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@9040 5ecf4fe2-1ee6-0310-87b1-e25e094e27de --- activesupport/lib/active_support/time_with_zone.rb | 34 +++++++++++++++++----- .../lib/active_support/values/time_zone.rb | 10 ++----- 2 files changed, 28 insertions(+), 16 deletions(-) (limited to 'activesupport/lib') diff --git a/activesupport/lib/active_support/time_with_zone.rb b/activesupport/lib/active_support/time_with_zone.rb index 008c7f151b..68585e8273 100644 --- a/activesupport/lib/active_support/time_with_zone.rb +++ b/activesupport/lib/active_support/time_with_zone.rb @@ -5,29 +5,28 @@ module ActiveSupport include Comparable attr_reader :time_zone - def initialize(utc_time, time_zone, local_time = nil) - @utc = utc_time - @time = local_time - @time_zone = time_zone + def initialize(utc_time, time_zone, local_time = nil, period = nil) + @utc, @time_zone, @time = utc_time, time_zone, local_time + @period = @utc ? period : get_period_and_ensure_valid_local_time end # Returns a Time instance that represents the time in time_zone def time - @time ||= time_zone.utc_to_local(@utc) + @time ||= utc_to_local end # Returns a Time instance that represents the time in UTC def utc - @utc ||= time_zone.local_to_utc(@time) + @utc ||= local_to_utc end alias_method :comparable_time, :utc alias_method :getgm, :utc alias_method :getutc, :utc alias_method :gmtime, :utc - # Returns the underlying TZInfo::TimezonePeriod for the local time + # Returns the underlying TZInfo::TimezonePeriod def period - @period ||= time_zone.period_for_utc(utc) + @period ||= time_zone.period_for_utc(@utc) end # Returns the simultaneous time in the specified zone @@ -214,5 +213,24 @@ module ActiveSupport result = result.in_time_zone(time_zone) if result.acts_like?(:time) result end + + private + def get_period_and_ensure_valid_local_time + @time_zone.period_for_local(@time) + rescue ::TZInfo::PeriodNotFound + # time is in the "spring forward" hour gap, so we're moving the time forward one hour and trying again + @time += 1.hour + retry + end + + # Replicating logic from TZInfo::Timezone#utc_to_local because we want to cache the period in an instance variable for reuse + def utc_to_local + ::TZInfo::TimeOrDateTime.wrap(utc) {|utc| period.to_local(utc)} + end + + # Replicating logic from TZInfo::Timezone#local_to_utc because we want to cache the period in an instance variable for reuse + def local_to_utc + ::TZInfo::TimeOrDateTime.wrap(time) {|time| period.to_utc(time)} + end end end diff --git a/activesupport/lib/active_support/values/time_zone.rb b/activesupport/lib/active_support/values/time_zone.rb index a52eee3e7c..401b669a0a 100644 --- a/activesupport/lib/active_support/values/time_zone.rb +++ b/activesupport/lib/active_support/values/time_zone.rb @@ -183,14 +183,8 @@ class TimeZone # Time.zone = "Hawaii" # => "Hawaii" # Time.zone.local(2007, 2, 1, 15, 30, 45) # => Thu, 01 Feb 2007 15:30:45 HST -10:00 def local(*args) - t = Time.utc_time(*args) - begin - result = local_to_utc(t) - rescue TZInfo::PeriodNotFound - t += 1.hour - retry - end - result.in_time_zone(self) + time = Time.utc_time(*args) + ActiveSupport::TimeWithZone.new(nil, self, time) end # Returns an ActiveSupport::TimeWithZone instance representing the current time -- cgit v1.2.3