instantiation_error/0

Description

instantiation_error

Throws an instantiation error. Used when an argument or one of its sub-arguments is a variable but a non-variable term is required. For example, trying to open a file with a variable for the input/output mode.

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(instantiation_error, Context)).

This allows the user to generate errors in the same format used by the runtime.

Modes and number of proofs

instantiation_error - error

Errors

When called:
instantiation_error