Module: Roby::ExceptionHandlingObject

Included in:
Roby
Defined in:
lib/roby/exceptions.rb

Overview

This module is to be included in all objects that are able to handle exception. These objects should define

#each_exception_handler { |matchers, handler| ... }

See Task::on_exception and Task#on_exception

Instance Method Summary collapse

Instance Method Details

#handle_exception(exception_object) ⇒ Object

Calls the exception handlers defined in this task for exception_object.exception Returns true if the exception has been handled, false otherwise



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# File 'lib/roby/exceptions.rb', line 125

def handle_exception(exception_object)
    each_exception_handler do |matchers, handler|
	if matchers.find { |m| m === exception_object.exception }
	    catch(:next_exception_handler) do 
		begin
		    handler.call(self, exception_object)
		    return true
		rescue Exception => e
		    if self == Roby
			Propagation.add_framework_error(e, 'global exception handling')
		    else
			Propagation.add_error(FailedExceptionHandler.new(e, self, exception_object))
		    end
		end
	    end
	end
    end
    return false
end

#pass_exception ⇒ Object

To be used in exception handlers themselves. Passes the exception to the next matching exception handler



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# File 'lib/roby/exceptions.rb', line 119

def pass_exception
    throw :next_exception_handler
end