Class: Colonel::Parser::TimeParser

Inherits:
Object
  • Object
show all
Defined in:
lib/colonel/parser.rb

Overview

Class to parse time fields from crontab line.

Constant Summary collapse

DIGIT = 
/\d{1,2}/
ALL = 
/\*/
COMMA = 
/\,/
DASH = 
/\-/
RANGE = 
/#{DIGIT}#{DASH}#{DIGIT}/
DEVIDE = 
/#{ALL}\/#{DIGIT}|#{RANGE}\/#{DIGIT}/
DEVIDER = 
/\//

Instance Method Summary collapse

Constructor Details

#initialize(time_expression, time_type, all_flag = true) ⇒ TimeParser

if all_flag is true -> return :all result if all?



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# File 'lib/colonel/parser.rb', line 125

def initialize(time_expression, time_type, all_flag=true)
  @time_type = time_type
  @tokens = time_expression.scan(/#{COMMA}|#{DEVIDE}|#{RANGE}|#{DIGIT}|#{ALL}/)
  @all_flag = all_flag
end

Instance Method Details

#ast ⇒ Object 



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# File 'lib/colonel/parser.rb', line 131

def ast
  @_ast ||= expression
end

#max_time_value ⇒ Object 



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# File 'lib/colonel/parser.rb', line 160

def max_time_value
  @_max_time_value ||= case @time_type
                         when :minute
                           59
                         when :hour
                           23
                         when :day
                           31
                         when :month
                           12
                         when :weekday
                           6
                       end
end

#min_time_value ⇒ Object 



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# File 'lib/colonel/parser.rb', line 145

def min_time_value
  @_min_time_value ||= case @time_type
                         when :minute
                           0
                         when :hour
                           0
                         when :day
                           1
                         when :month
                           1
                         when :weekday
                           0
                       end
end

#result ⇒ Object 



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# File 'lib/colonel/parser.rb', line 135

def result
  unique = ast.flatten.uniq
  unique.pop if unique.last.nil? #remove nil element
  if all?(unique) && @all_flag
    :all
  else
    unique
  end
end

#tokens ⇒ Object 



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# File 'lib/colonel/parser.rb', line 120

def tokens
  @tokens
end