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kernel_raise.rb
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kernel_raise.rb
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module Kernel
remove_method :raise
def raise(*args)
if Cond.handlers_stack.last.empty?
# not using Cond
Cond.original_raise(*args)
else
last_exception, current_handler = Cond.exception_stack.last
exception = (
if last_exception and args.empty?
last_exception
else
begin
Cond.original_raise(*args)
rescue Exception => e
e
end
end
)
if current_handler
# inside a handler
handler = loop {
Cond.reraise_count += 1
handlers = Cond.handlers_stack[-1 - Cond.reraise_count]
if handlers.nil?
break nil
end
found = Cond.find_handler_from(handlers, exception.class)
if found and found != current_handler
break found
end
}
if handler
handler.call(exception)
else
Cond.reraise_count = 0
Cond.original_raise(exception)
end
else
# not inside a handler
Cond.reraise_count = 0
handler = Cond.find_handler(exception.class)
if handler
Cond.exception_stack.push([exception, handler])
begin
handler.call(exception)
ensure
Cond.exception_stack.pop
end
else
Cond.original_raise(exception)
end
end
end
end
remove_method :fail
alias_method :fail, :raise
end