Module: BinData::BasePrimitive::AssertPlugin

Defined in:
lib/bindata/base_primitive.rb

Overview

Logic for the :assert parameter

Instance Method Summary collapse

Instance Method Details

#assert! ⇒ Object

Raises:



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# File 'lib/bindata/base_primitive.rb', line 204

def assert!
  current_value = snapshot
  expected = eval_parameter(:assert, :value => current_value)

  msg = if not expected and current_value.nil?
    "assertion failed"
  elsif not expected
    "value '#{current_value}' not as expected"
  elsif expected != true and current_value != expected
    "value is '#{current_value}' but expected '#{expected}'"
  else
    nil
  end

  raise ValidityError, "#{msg} for #{debug_name}" if msg
end

#assign(val) ⇒ Object 



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# File 'lib/bindata/base_primitive.rb', line 194

def assign(val)
  super(val)
  assert!
end

#do_read(io) ⇒ Object

:nodoc:



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# File 'lib/bindata/base_primitive.rb', line 199

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