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/*
This file is part of GNU Taler
(C) 2019-2024 Taler Systems S.A.
GNU Taler is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.
GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
/**
* Helpers for invariants.
*/
/**
* An invariant has been violated.
*/
export class InvariantViolatedError extends Error {
constructor(message?: string) {
super(message);
Object.setPrototypeOf(this, InvariantViolatedError.prototype);
}
}
/**
* Check a database invariant.
*
* A violation of this invariant means that the database is inconsistent.
*/
export function checkDbInvariant(b: boolean, m?: string): asserts b {
if (!b) {
if (m) {
throw Error(`BUG: database invariant failed (${m})`);
} else {
throw Error("BUG: database invariant failed");
}
}
}
/**
* Check a logic invariant.
*
* A violation of this invariant means that there is a logic bug in the program.
*/
export function checkLogicInvariant(b: boolean, m?: string): asserts b {
if (!b) {
if (m) {
throw Error(`BUG: logic invariant failed (${m})`);
} else {
throw Error("BUG: logic invariant failed");
}
}
}
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