decaffeinate-parser/dist/util/unwindChainedComparison.mjs

A better AST for CoffeeScript, inspired by CoffeeScriptRedux.

var __spreadArrays = (this && this.__spreadArrays) || function () {
    for (var s = 0, i = 0, il = arguments.length; i < il; i++) s += arguments[i].length;
    for (var r = Array(s), k = 0, i = 0; i < il; i++)
        for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++)
            r[k] = a[j];
    return r;
};
import { Op } from 'decaffeinate-coffeescript2/lib/coffeescript/nodes';
import { inspect } from 'util';
import isComparisonOperator from './isComparisonOperator';
export default function unwindChainedComparison(node) {
    var operands = [];
    for (var link = node;;) {
        if (link instanceof Op && isComparisonOperator(link)) {
            var first = link.first, second = link.second;
            if (!second) {
                throw new Error("unexpected unary operator inside chained comparison: " + inspect(node));
            }
            operands = __spreadArrays([second], operands);
            link = first;
        }
        else {
            operands = __spreadArrays([link], operands);
            break;
        }
    }
    return operands;
}