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.
Class Method Summary collapse
- .class_name(nbits, endian, signed) ⇒ Object
- .define_class(nbits, endian, signed) ⇒ Object
- .define_methods(int_class, nbits, endian, signed) ⇒ Object
Class Method Details
.class_name(nbits, endian, signed) ⇒ Object
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# File 'lib/bindata/int.rb', line 23 def class_name(nbits, endian, signed) endian_str = (endian == :big) ? "be" : "le" base = (signed == :signed) ? "Int" : "Uint" "#{base}#{nbits}#{endian_str}" end |
.define_class(nbits, endian, signed) ⇒ Object
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# File 'lib/bindata/int.rb', line 9 def define_class(nbits, endian, signed) name = class_name(nbits, endian, signed) unless BinData.const_defined?(name) BinData.module_eval <<-END class #{name} < BinData::BasePrimitive register_self Int.define_methods(self, #{nbits}, :#{endian}, :#{signed}) end 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 30 def define_methods(int_class, nbits, endian, signed) raise "nbits must be divisible by 8" unless (nbits % 8).zero? int_class.module_eval <<-END #--------------- private def _assign(val) #{create_clamp_code(nbits, signed)} super(val) end def _do_num_bytes #{nbits / 8} end def sensible_default 0 end def value_to_binary_string(val) #{create_clamp_code(nbits, signed)} #{create_int2uint_code(nbits) if signed == :signed} #{create_to_binary_s_code(nbits, endian)} end def read_and_return_value(io) val = #{create_read_code(nbits, endian)} #{create_uint2int_code(nbits) if signed == :signed} end END end |