"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
}) : (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
    Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
    o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
    if (mod && mod.__esModule) return mod;
    var result = {};
    if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
    __setModuleDefault(result, mod);
    return result;
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.foldChunks = void 0;
const CH = __importStar(require("../Channel"));
const C = __importStar(require("./core"));
/**
 * A sink that folds its input chunks with the provided function, termination predicate and initial state.
 * `contFn` condition is checked only for the initial value and at the end of processing of each chunk.
 * `f` and `contFn` must preserve chunking-invariance.
 */
function foldChunks(z, contFn, f) {
    const reader = (s) => CH.readWith((in_) => {
        const nextS = f(s, in_);
        return contFn(nextS) ? reader(nextS) : CH.end(nextS);
    }, (err) => CH.fail(err), (_) => CH.end(s));
    return new C.Sink(contFn(z) ? reader(z) : CH.end(z));
}
exports.foldChunks = foldChunks;
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