Module: BinData::Int

Defined in:
lib/bindata/int.rb

Overview

Defines a number of classes that contain an integer. The integer is defined by endian, signedness and number of bytes.

Constant Summary collapse

@@mutex =

:nodoc: all

Mutex.new

Class Method Summary collapse

Class Method Details

.define_class(name, nbits, endian, signed) ⇒ Object 



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# File 'lib/bindata/int.rb', line 12

def define_class(name, nbits, endian, signed)
  @@mutex.synchronize do
    unless BinData.const_defined?(name)
      new_class = Class.new(BinData::BasePrimitive)
      Int.define_methods(new_class, nbits, endian.to_sym, signed.to_sym)
      RegisteredClasses.register(name, new_class)

      BinData.const_set(name, new_class)
    end
  end

  BinData.const_get(name)
end

.define_methods(int_class, nbits, endian, signed) ⇒ Object 



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# File 'lib/bindata/int.rb', line 26

def define_methods(int_class, nbits, endian, signed)
  raise "nbits must be divisible by 8" unless (nbits % 8).zero?

  int_class.module_eval "    def assign(val)\n      \#{create_clamp_code(nbits, signed)}\n      super(val)\n    end\n\n    def do_num_bytes\n      \#{nbits / 8}\n    end\n\n    #---------------\n    private\n\n    def sensible_default\n      0\n    end\n\n    def value_to_binary_string(val)\n      \#{create_clamp_code(nbits, signed)}\n      \#{create_to_binary_s_code(nbits, endian, signed)}\n    end\n\n    def read_and_return_value(io)\n      \#{create_read_code(nbits, endian, signed)}\n    end\n  END\nend\n"