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module FlydataCore
module SourcePosBase
EMPTY = "-"
INFINITY = 'infinity'
PREDEFINED_SRC_LIST = [EMPTY, INFINITY]
def self.included(base)
base.class_eval do
include Comparable
attr_reader :src_pos_empty, :src_pos_infinity
def self.empty_src_pos
self.new(EMPTY)
end
def self.infinity_src_pos
self.new(INFINITY)
end
end
end
def to_s
if empty?
EMPTY
elsif infinity?
INFINITY
else
nil
end
end
# Return true if one of flags is set
def set_predefined_flags(str)
case str.to_s
when EMPTY
@src_pos_empty = true
when INFINITY
@src_pos_infinity = true
else
false
end
end
def empty?
@src_pos_empty == true
end
def infinity?
@src_pos_infinity == true
end
# Override (Comparable)
def <=>(other_pos)
if other_pos.nil?
raise ArgumentError.new("comparison with nil failed")
end
other_pos = self.class.new(other_pos) unless other_pos.kind_of?(self.class)
if infinity? && other_pos.infinity?
return 0
elsif infinity?
return 1
elsif other_pos.infinity?
return -1
end
if empty? && other_pos.empty?
return 0
elsif empty? || other_pos.empty?
raise ArgumentError.new("comparison with empty source pos failed")
end
nil
end
end
end
Version data entries
19 entries across 19 versions & 1 rubygems