Class: TZInfo::TimeOrDateTime

Inherits:
Object
  • Object
show all
Includes:
Comparable
Defined in:
lib/tzinfo/time_or_datetime.rb

Overview

Used by TZInfo internally to represent either a Time, DateTime or an Integer timestamp (seconds since 1970-01-01 00:00:00).

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(timeOrDateTime) ⇒ TimeOrDateTime

Constructs a new TimeOrDateTime. timeOrDateTime can be a Time, DateTime or Integer. If using a Time or DateTime, any time zone information is ignored.

Integer timestamps must be within the range supported by Time on the platform being used.



39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
 
# File 'lib/tzinfo/time_or_datetime.rb', line 39

def initialize(timeOrDateTime)
  @time = nil
  @datetime = nil
  @timestamp = nil
  
  if timeOrDateTime.is_a?(Time)
    @time = timeOrDateTime
    
    # Avoid using the slower Rational class unless necessary.
    nsec = RubyCoreSupport.time_nsec(@time)
    usec = nsec % 1000 == 0 ? nsec / 1000 : Rational(nsec, 1000)
    
    @time = Time.utc(@time.year, @time.mon, @time.mday, @time.hour, @time.min, @time.sec, usec) unless @time.zone == 'UTC'        
    @orig = @time
  elsif timeOrDateTime.is_a?(DateTime)
    @datetime = timeOrDateTime
    @datetime = @datetime.new_offset(0) unless @datetime.offset == 0
    @orig = @datetime
  else
    @timestamp = timeOrDateTime.to_i
    
    if !RubyCoreSupport.time_supports_64bit && (@timestamp > 2147483647 || @timestamp < -2147483648 || (@timestamp < 0 && !RubyCoreSupport.time_supports_negative))
      raise RangeError, 'Timestamp is outside the supported range of Time on this platform'
    end
    
    @orig = @timestamp
  end
end

Class Method Details

.wrap(timeOrDateTime) ⇒ Object

If no block is given, returns a TimeOrDateTime wrapping the given timeOrDateTime. If a block is specified, a TimeOrDateTime is constructed and passed to the block. The result of the block must be a TimeOrDateTime.

The result of the block will be converted to the type of the originally passed in timeOrDateTime and then returned as the result of wrap.

timeOrDateTime can be a Time, DateTime, timestamp (Integer) or TimeOrDateTime. If a TimeOrDateTime is passed in, no new TimeOrDateTime will be constructed and the value passed to wrap will be used when calling the block.



312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
 
# File 'lib/tzinfo/time_or_datetime.rb', line 312

def self.wrap(timeOrDateTime)      
  t = timeOrDateTime.is_a?(TimeOrDateTime) ? timeOrDateTime : TimeOrDateTime.new(timeOrDateTime)        
  
  if block_given?
    t = yield t
    
    if timeOrDateTime.is_a?(TimeOrDateTime)
      t
    elsif timeOrDateTime.is_a?(Time)
      t.to_time
    elsif timeOrDateTime.is_a?(DateTime)
      t.to_datetime
    else
      t.to_i
    end        
  else
    t
  end
end

Instance Method Details

#+(seconds) ⇒ Object

Adds a number of seconds to the TimeOrDateTime. Returns a new TimeOrDateTime, preserving what the original constructed type was. If the original type is a Time and the resulting calculation goes out of range for Times, then an exception will be raised by the Time class.



244
245
246
247
248
249
250
251
252
253
254
255
 
# File 'lib/tzinfo/time_or_datetime.rb', line 244

def +(seconds)
  if seconds == 0
    self
  else
    if @orig.is_a?(DateTime)
      TimeOrDateTime.new(@orig + OffsetRationals.rational_for_offset(seconds))
    else
      # + defined for Time and Integer
      TimeOrDateTime.new(@orig + seconds)
    end
  end
end

#-(seconds) ⇒ Object

Subtracts a number of seconds from the TimeOrDateTime. Returns a new TimeOrDateTime, preserving what the original constructed type was. If the original type is a Time and the resulting calculation goes out of range for Times, then an exception will be raised by the Time class.



261
262
263
 
# File 'lib/tzinfo/time_or_datetime.rb', line 261

def -(seconds)
  self + (-seconds)
end

#<=>(timeOrDateTime) ⇒ Object

Compares this TimeOrDateTime with another Time, DateTime, timestamp (Integer) or TimeOrDateTime. Returns -1, 0 or +1 depending whether the receiver is less than, equal to, or greater than timeOrDateTime.

Comparisons involving a DateTime will be performed using DateTime#<=>. Comparisons that don’t involve a DateTime, but include a Time will be performed with Time#<=>. Otherwise comparisons will be performed with Integer#<=>.



222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
 
# File 'lib/tzinfo/time_or_datetime.rb', line 222

def <=>(timeOrDateTime)
  unless timeOrDateTime.is_a?(TimeOrDateTime)
    timeOrDateTime = TimeOrDateTime.wrap(timeOrDateTime)
  end
      
  orig = timeOrDateTime.to_orig
  
  if @orig.is_a?(DateTime) || orig.is_a?(DateTime)
    # If either is a DateTime, assume it is there for a reason 
    # (i.e. for its larger range of acceptable values on 32-bit systems).
    to_datetime <=> timeOrDateTime.to_datetime
  elsif @orig.is_a?(Time) || orig.is_a?(Time)
    to_time <=> timeOrDateTime.to_time
  else
    to_i <=> timeOrDateTime.to_i
  end
end

#add_with_convert(seconds) ⇒ Object

Similar to the + operator, but converts to a DateTime based TimeOrDateTime where the Time or Integer timestamp to go out of the allowed range for a Time, converts to a DateTime based TimeOrDateTime.

Note that the range of Time varies based on the platform.



270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
 
# File 'lib/tzinfo/time_or_datetime.rb', line 270

def add_with_convert(seconds)
  if seconds == 0
    self
  else
    if @orig.is_a?(DateTime)
      TimeOrDateTime.new(@orig + OffsetRationals.rational_for_offset(seconds))
    else
      # A Time or timestamp.
      result = to_i + seconds
      
      if ((result > 2147483647 || result < -2147483648) && !RubyCoreSupport.time_supports_64bit) || (result < 0 && !RubyCoreSupport.time_supports_negative)
        result = TimeOrDateTime.new(to_datetime + OffsetRationals.rational_for_offset(seconds))
      else
        result = TimeOrDateTime.new(@orig + seconds)
      end
    end
  end
end

#eql?(todt) ⇒ Boolean

Returns true if todt represents the same time and was originally constructed with the same type (DateTime, Time or timestamp) as this TimeOrDateTime.

Returns:

  • (Boolean) 


292
293
294
 
# File 'lib/tzinfo/time_or_datetime.rb', line 292

def eql?(todt)
  todt.kind_of?(TimeOrDateTime) && to_orig.eql?(todt.to_orig)      
end

#hash ⇒ Object

Returns a hash of this TimeOrDateTime.



297
298
299
 
# File 'lib/tzinfo/time_or_datetime.rb', line 297

def hash
  @orig.hash
end

#hour ⇒ Object

Returns the hour of the day (0..23).



165
166
167
168
169
170
171
172
173
 
# File 'lib/tzinfo/time_or_datetime.rb', line 165

def hour
  if @time
    @time.hour
  elsif @datetime
    @datetime.hour
  else
    to_time.hour
  end
end

#inspect ⇒ Object

Returns internal object state as a programmer-readable string.



125
126
127
 
# File 'lib/tzinfo/time_or_datetime.rb', line 125

def inspect
  "#<#{self.class}: #{@orig.inspect}>"
end

#mday ⇒ Object Also known as: day

Returns the day of the month (1..n).



153
154
155
156
157
158
159
160
161
 
# File 'lib/tzinfo/time_or_datetime.rb', line 153

def mday
  if @time
    @time.mday
  elsif @datetime
    @datetime.mday
  else
    to_time.mday
  end
end

#min ⇒ Object

Returns the minute of the hour (0..59).



176
177
178
179
180
181
182
183
184
 
# File 'lib/tzinfo/time_or_datetime.rb', line 176

def min
  if @time
    @time.min
  elsif @datetime
    @datetime.min
  else
    to_time.min
  end
end

#mon ⇒ Object Also known as: month

Returns the month of the year (1..12).



141
142
143
144
145
146
147
148
149
 
# File 'lib/tzinfo/time_or_datetime.rb', line 141

def mon
  if @time
    @time.mon
  elsif @datetime
    @datetime.mon
  else
    to_time.mon
  end
end

#sec ⇒ Object

Returns the second of the minute (0..60). (60 for a leap second).



187
188
189
190
191
192
193
194
195
 
# File 'lib/tzinfo/time_or_datetime.rb', line 187

def sec
  if @time
    @time.sec
  elsif @datetime
    @datetime.sec
  else
    to_time.sec
  end
end

#to_datetime ⇒ Object

Returns the time as a DateTime.

When converting from a Time, the result is truncated to microsecond precision.



88
89
90
91
92
93
94
95
96
97
 
# File 'lib/tzinfo/time_or_datetime.rb', line 88

def to_datetime
  unless @datetime
    # Avoid using Rational unless necessary.
    u = usec
    s = u == 0 ? sec : Rational(sec * 1000000 + u, 1000000)
    @datetime = RubyCoreSupport.datetime_new(year, mon, mday, hour, min, s)
  end
  
  @datetime
end

#to_i ⇒ Object

Returns the time as an integer timestamp.



100
101
102
103
104
105
106
 
# File 'lib/tzinfo/time_or_datetime.rb', line 100

def to_i
  unless @timestamp
    @timestamp = to_time.to_i
  end
  
  @timestamp
end

#to_orig ⇒ Object

Returns the time as the original time passed to new.



109
110
111
 
# File 'lib/tzinfo/time_or_datetime.rb', line 109

def to_orig
  @orig
end

#to_s ⇒ Object

Returns a string representation of the TimeOrDateTime.



114
115
116
117
118
119
120
121
122
 
# File 'lib/tzinfo/time_or_datetime.rb', line 114

def to_s
  if @orig.is_a?(Time)
    "Time: #{@orig.to_s}"
  elsif @orig.is_a?(DateTime)
    "DateTime: #{@orig.to_s}"
  else
    "Timestamp: #{@orig.to_s}"
  end
end

#to_time ⇒ Object

Returns the time as a Time.

When converting from a DateTime, the result is truncated to microsecond precision.



72
73
74
75
76
77
78
79
80
81
82
 
# File 'lib/tzinfo/time_or_datetime.rb', line 72

def to_time
  unless @time
    if @timestamp
      @time = Time.at(@timestamp).utc
    else
      @time = Time.utc(year, mon, mday, hour, min, sec, usec)
    end
  end
  
  @time      
end

#usec ⇒ Object

Returns the number of microseconds for the time.



198
199
200
201
202
203
204
205
206
207
208
209
210
211
 
# File 'lib/tzinfo/time_or_datetime.rb', line 198

def usec      
  if @time
    @time.usec
  elsif @datetime
    # Ruby 1.8 has sec_fraction (of which the documentation says
    # 'I do NOT recommend you to use this method'). sec_fraction no longer
    # exists in Ruby 1.9.
    
    # Calculate the sec_fraction from the day_fraction.
    ((@datetime.day_fraction - OffsetRationals.rational_for_offset(@datetime.hour * 3600 + @datetime.min * 60 + @datetime.sec)) * 86400000000).to_i
  else 
    0
  end
end

#year ⇒ Object

Returns the year.



130
131
132
133
134
135
136
137
138
 
# File 'lib/tzinfo/time_or_datetime.rb', line 130

def year
  if @time
    @time.year
  elsif @datetime
    @datetime.year
  else
    to_time.year
  end
end