Interface IExitCodeExceptionMapper

src/main/java/picocli/CommandLine.java:1230–1236

Interface that provides the appropriate exit code that will be returned from the #execute(String...) execute method for an exception that occurred during parsing or while invoking the command's Runnable, Callable, or Method. Example usage: @Command class FailingCommand impl

     * @since 4.0
     */
    public interface IExitCodeExceptionMapper {
        /** Returns the exit code that should be returned from the {@link #execute(String...) execute} method.
         * @param exception the exception that occurred during parsing or while invoking the command's Runnable, Callable, or Method.
         * @return the exit code
         */
        int getExitCode(Throwable exception);
    }
    private static int mappedExitCode(Throwable t, IExitCodeExceptionMapper mapper, int defaultExitCode) {
        try {
            return (mapper != null) ? mapper.getExitCode(t) : defaultExitCode;