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- Overview
- Declaration syntaxes
- Process of simple exception
- Process of advanced exception
- Functions for managing specific exceptions
Mechanism of specific exceptions
A process of specific exception is used to process a risky code (which means a code that could trigger an exception). The exception will be triggered if a programming error occurs in the specified code. This specific exception process will only be available in the process in which it was declared. Remarks - A specific exception process can be declared in any process.
- A specific exception process has priority over a general exception process.
- After the execution of an exception process, the WLanguage code following the process is run.
- A specific exception process cannot be declared in another specific exception process.
Process of simple exception WHEN EXCEPTION IN
<"Code that can trigger an exception">
DO
<"Code for processing the exception">
END
<Rest of code> Process of advanced exception WHEN EXCEPTION IN
<"Code that can trigger an exception">
DO
<"Code for processing the exception">
ELSE
<"Code used if the exception is not triggered">
END
<Rest of code> Functions for managing specific exceptions Some functions specific to the management of the exceptions can be used in the processes of specific exceptions: | | | ExceptionInfo | Retrieves the information regarding the error processed by the exception (this function replaces the exception variables used in WINDEV 5.5). | | ExceptionPropagate | Propagates an exception. | | ExceptionThrow | Artificially triggers an exception process for a given error. |
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