Module: BinData::BasePrimitive::AssertedValuePlugin

Defined in:
lib/bindata/base_primitive.rb

Overview

Logic for the :asserted_value parameter

Instance Method Summary collapse

Instance Method Details

#_value ⇒ Object 



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# File 'lib/bindata/base_primitive.rb', line 222

def _value
  reading? ? @value : eval_parameter(:asserted_value)
end

#assert! ⇒ Object 



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# File 'lib/bindata/base_primitive.rb', line 231

def assert!
  assert_value(snapshot)
end

#assert_value(current_value) ⇒ Object 



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# File 'lib/bindata/base_primitive.rb', line 235

def assert_value(current_value)
  expected = eval_parameter(:asserted_value, :value => current_value)
  if not expected
    raise ValidityError,
          "value '#{current_value}' not as expected for #{debug_name}"
  elsif current_value != expected and expected != true
    raise ValidityError,
          "value is '#{current_value}' but " +
          "expected '#{expected}' for #{debug_name}"
  end
end

#assign(val) ⇒ Object 



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# File 'lib/bindata/base_primitive.rb', line 217

def assign(val)
  assert_value(val)
  super(val)
end

#do_read(io) ⇒ Object

:nodoc:



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# File 'lib/bindata/base_primitive.rb', line 226

def do_read(io) #:nodoc:
  super(io)
  assert!
end