Class: Runt::REYear

Inherits:
Object
  • Object
show all
Includes:
TExpr
Defined in:
lib/runt/temporalexpression.rb

Overview

TExpr that matches date ranges within a single year. Assumes that the start and end parameters occur within the same year.

Constant Summary collapse

NO_DAY =

Sentinel value used to denote that no specific day was given to create the expression.

0

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from TExpr

#&, #-, #and, #dates, #minus, #or, #|

Constructor Details

#initialize(start_month, *args) ⇒ REYear

Synopsis

REYear.new(start_month [, (start_day | end_month), ...]

Args

One or two arguments given
start_month

Start month. Valid values are 1..12. When no other parameters are given this value will be used for the end month as well. Matches the entire month through the ending month.

end_month

End month. Valid values are 1..12. When given in two argument form will match through the entire month.

Three or four arguments given
start_month

Start month. Valid values are 1..12.

start_day

Start day. Valid values are 1..31, depending on the month.

end_month

End month. Valid values are 1..12. If a fourth argument is not given, this value will cover through the entire month.

end_day

End day. Valid values are 1..31, depending on the month.

Description

Create a new REYear expression expressing a range of months or days within months within a year.

Usage

# Creates the range March 12th through May 23rd
expr = REYear.new(3,12,5,23)

# Creates the range March 1st through May 31st
expr = REYear.new(3,5)

# Creates the range March 12th through May 31st
expr = REYear.new(3,12,5)

# Creates the range March 1st through March 30th
expr = REYear.new(3)



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# File 'lib/runt/temporalexpression.rb', line 487

def initialize(start_month, *args)
  @start_month = start_month
  if (args.nil? || args.size == NO_DAY) then
    # One argument given
    @end_month = start_month
    @start_day = NO_DAY
    @end_day = NO_DAY
  else
    case args.size
    when 1
	@end_month = args[0]
	@start_day = NO_DAY
	@end_day = NO_DAY
    when 2
	@start_day = args[0]
	@end_month = args[1]
	@end_day = NO_DAY
    when 3
	@start_day = args[0]
	@end_month = args[1]
	@end_day = args[2]
    else
	raise "Invalid number of var args: 1 or 3 expected, #{args.size} given"
    end
  end
  @same_month_dates_provided = (@start_month == @end_month) && (@start_day!=NO_DAY && @end_day != NO_DAY)
end

Instance Attribute Details

#end_day ⇒ Object

Returns the value of attribute end_day.



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# File 'lib/runt/temporalexpression.rb', line 437

def end_day
  @end_day
end

#end_month ⇒ Object

Returns the value of attribute end_month.



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# File 'lib/runt/temporalexpression.rb', line 437

def end_month
  @end_month
end

#start_day ⇒ Object

Returns the value of attribute start_day.



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# File 'lib/runt/temporalexpression.rb', line 437

def start_day
  @start_day
end

#start_month ⇒ Object

Returns the value of attribute start_month.



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# File 'lib/runt/temporalexpression.rb', line 437

def start_month
  @start_month
end

Instance Method Details

#include?(date) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/runt/temporalexpression.rb', line 515

def include?(date)
 
  return same_start_month_include_day?(date) \
    && same_end_month_include_day?(date) if @same_month_dates_provided

  is_between_months?(date) ||
    (same_start_month_include_day?(date) ||
	same_end_month_include_day?(date))
end

#save ⇒ Object 



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# File 'lib/runt/temporalexpression.rb', line 525

def save
  "Runt::REYear.new(#{@start_month}, #{@start_day}, #{@end_month}, #{@end_day})"
end

#to_s ⇒ Object 



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# File 'lib/runt/temporalexpression.rb', line 529

def to_s
  "#{Runt.month_name(@start_month)} #{Runt.ordinalize(@start_day)} " +
    "through #{Runt.month_name(@end_month)} #{Runt.ordinalize(@end_day)}"
end