/// <reference types="./top-parser.d.ts" />
import { TopNode } from '../operation-node/top-node.js';
import { isBigInt, isNumber, isUndefined } from '../util/object-utils.js';
export function parseTop(expression, modifiers) {
    if (!isNumber(expression) && !isBigInt(expression)) {
        throw new Error(`Invalid top expression: ${expression}`);
    }
    if (!isUndefined(modifiers) && !isTopModifiers(modifiers)) {
        throw new Error(`Invalid top modifiers: ${modifiers}`);
    }
    return TopNode.create(expression, modifiers);
}
function isTopModifiers(modifiers) {
    return (modifiers === 'percent' ||
        modifiers === 'with ties' ||
        modifiers === 'percent with ties');
}