Skip to main content

Invalid Argument

rascal-0.40.17

Synopsis​

A function or operation is applied to an invalid argument value.

Types​

data RuntimeException = InvalidArgument() | InvalidArgument(value v) | InvalidArgument(value v, str message);

Usage​

import Exception; (only needed when InvalidArgument is used in catch)

Description​

This error is generated when a function or operation is applied to a value that it does not expect.

Remedies:

  • Check the value or values to which you apply the function or operation.

Examples​

Changing the month of a DateTime to an illegal month (13):

rascal>NOW = $2013-01-13T22:16:51.740+01:00$;
datetime: $2013-01-13T22:16:51.740+01:00$
rascal>NOW.month = 13;
|prompt:///|(12,2,<1,12>,<1,14>): IllegalArgument(13,"Cannot create date with provided values.")
ok

Setting the offset in a location to a negative value:

rascal>someLoc = |home:///abc.txt|;
loc: |home:///abc.txt|
rascal>someLoc.offset = -1;
|prompt:///|(18,1,<1,18>,<1,19>): UnavailableInformation()
    at $shell$(|main://$shell$|)
ok