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silverbullet/plugos/sqlite/deno-sqlite/src/error.ts

58 lines
1.5 KiB
TypeScript

import { Wasm } from "../build/sqlite.js";
import { getStr } from "./wasm.ts";
import { Status } from "./constants.ts";
/**
* Errors which can occur while interacting with
* a database.
*/
export class SqliteError extends Error {
/**
* Extension over the standard JS Error object
* to also contain class members for error code
* and error code name.
*
* Instances of this class should not be constructed
* directly and should only be obtained
* from exceptions raised in this module.
*/
constructor(context: Wasm | string, code?: Status) {
let message;
let status;
if (typeof context === "string") {
message = context;
status = Status.Unknown;
} else {
message = getStr(context, context.get_sqlite_error_str());
status = context.get_status();
}
super(message);
this.code = code ?? status;
this.name = "SqliteError";
}
/**
* The SQLite status code which caused this error.
*
* Errors that originate in the JavaScript part of
* the library will not have an associated status
* code. For these errors, the code will be
* `Status.Unknown`.
*
* These codes are accessible via
* the exported `Status` object.
*/
code: Status;
/**
* Key of code in exported `status`
* object.
*
* E.g. if `code` is `19`,
* `codeName` would be `SqliteConstraint`.
*/
get codeName(): keyof typeof Status {
return Status[this.code] as keyof typeof Status;
}
}