permission_error/3¶
Description¶
permission_error(Operation, Permission, Culprit)
Throws an evaluation error. This built-in method is declared private and thus cannot be used as a message to an object. Calling this predicate is equivalent to the following sequence of calls:
...,
context(Context),
throw(error(permission_error(Operation,Permission,Culprit), Context)).
This allows the user to generate errors in the same format used by the runtime.
Modes and number of proofs¶
permission_error(@nonvar, @nonvar, @nonvar) - error
Errors¶
When called:
permission_error(Operation, Permission, Culprit)
Examples¶
...,
\+ writable(File),
permission_error(modify, file, File).