jison-lexer-error-code.js

/**
 * See also:
 * http://stackoverflow.com/questions/1382107/whats-a-good-way-to-extend-error-in-javascript/#35881508
 * but we keep the prototype.constructor and prototype.name assignment lines too for compatibility
 * with userland code which might access the derived class in a 'classic' way.
 *
 * @public
 * @constructor
 * @nocollapse
 */
function JisonLexerError(msg, hash) {
    Object.defineProperty(this, 'name', {
        enumerable: false,
        writable: false,
        value: 'JisonLexerError'
    });

    if (msg == null) msg = '???';

    Object.defineProperty(this, 'message', {
        enumerable: false,
        writable: true,
        value: msg
    });

    this.hash = hash;

    var stacktrace;
    if (hash && hash.exception instanceof Error) {
        var ex2 = hash.exception;
        this.message = ex2.message || msg;
        stacktrace = ex2.stack;
    }
    if (!stacktrace) {
        if (Error.hasOwnProperty('captureStackTrace')) { // V8
            Error.captureStackTrace(this, this.constructor);
        } else {
            stacktrace = (new Error(msg)).stack;
        }
    }
    if (stacktrace) {
        Object.defineProperty(this, 'stack', {
            enumerable: false,
            writable: false,
            value: stacktrace
        });
    }
}

if (typeof Object.setPrototypeOf === 'function') {
    Object.setPrototypeOf(JisonLexerError.prototype, Error.prototype);
} else {
    JisonLexerError.prototype = Object.create(Error.prototype);
}
JisonLexerError.prototype.constructor = JisonLexerError;
JisonLexerError.prototype.name = 'JisonLexerError';