is_mirai_error {mirai}

Error Validators

Description

Validator functions for error value types created by mirai.

Usage

is_mirai_error(x)

is_mirai_interrupt(x)

is_error_value(x)

Arguments

x

an object.

Details

Is the object a ‘miraiError’. When execution in a ‘mirai’ process fails, the error message is returned as a character string of class ‘miraiError’ and ‘errorValue’. The stack trace is available at $stack.trace on the error object.

Is the object a ‘miraiInterrupt’. When an ongoing ‘mirai’ is sent a user interrupt, it will resolve to an empty character string classed as ‘miraiInterrupt’ and ‘errorValue’.

Is the object an ‘errorValue’, such as a ‘mirai’ timeout, a ‘miraiError’ or a ‘miraiInterrupt’. This is a catch-all condition that includes all returned error values.

Value

Logical value TRUE or FALSE.

Examples

if (interactive()) {
# Only run examples in interactive R sessions

m <- mirai(stop())
call_mirai(m)
is_mirai_error(m$data)
is_mirai_interrupt(m$data)
is_error_value(m$data)
m$data$stack.trace

m2 <- mirai(Sys.sleep(1L), .timeout = 100)
call_mirai(m2)
is_mirai_error(m2$data)
is_mirai_interrupt(m2$data)
is_error_value(m2$data)

}