Class: DataMapper::Types::Flag
- Inherits:
-
Object
- Object
- DataMapper::Types::Flag
- Defined in:
- lib/dm-types/flag.rb
Class Method Summary collapse
- .[](*flags) ⇒ Object
- .dump(value, property) ⇒ Object
- .flag_map ⇒ Object
- .flag_map=(value) ⇒ Object
- .inherited(target) ⇒ Object
- .load(value, property) ⇒ Object
- .new(*flags) ⇒ Object
- .typecast(value, property) ⇒ Object
Class Method Details
.[](*flags) ⇒ Object
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# File 'lib/dm-types/flag.rb', line 27 def self.[](*flags) new(*flags) end |
.dump(value, property) ⇒ Object
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# File 'lib/dm-types/flag.rb', line 46 def self.dump(value, property) return if value.nil? flags = value.is_a?(Array) ? value : [value] flags.map!{ |f| f.to_sym } flag_map.invert.values_at(*flags.flatten).compact.inject(0) { |sum, i| sum + i } end |
.flag_map ⇒ Object
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# File 'lib/dm-types/flag.rb', line 8 def self.flag_map @flag_map end |
.flag_map=(value) ⇒ Object
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# File 'lib/dm-types/flag.rb', line 12 def self.flag_map=(value) @flag_map = value end |
.inherited(target) ⇒ Object
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# File 'lib/dm-types/flag.rb', line 4 def self.inherited(target) target.instance_variable_set("@primitive", self.primitive) end |
.load(value, property) ⇒ Object
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# File 'lib/dm-types/flag.rb', line 31 def self.load(value, property) begin matches = [] 0.upto((Math.log(value) / Math.log(2)).ceil) do |i| pow = 2 ** i matches << flag_map[pow] if value & pow == pow end matches.compact rescue TypeError, Errno::EDOM [] end end |
.new(*flags) ⇒ Object
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# File 'lib/dm-types/flag.rb', line 16 def self.new(*flags) type = Class.new(Flag) type.flag_map = {} flags.each_with_index do |flag, i| type.flag_map[2 ** i] = flag end type end |
.typecast(value, property) ⇒ Object
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# File 'lib/dm-types/flag.rb', line 53 def self.typecast(value, property) case value when Array then value.map {|v| v.to_sym} else value.to_sym end end |