"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.intersperse = exports.intersperse_ = void 0;
// ets_tracing: off
const A = __importStar(require("../../Collections/Immutable/Chunk"));
const Tp = __importStar(require("../../Collections/Immutable/Tuple"));
const Function_1 = require("../../Function");
const T = __importStar(require("../_internal/effect"));
const M = __importStar(require("../_internal/managed"));
const Ref = __importStar(require("../_internal/ref"));
const definitions_1 = require("./definitions");
/**
 * Intersperse stream with provided element similar to <code>List.mkString</code>.
 */
function intersperse_(self, middle) {
    return new definitions_1.Stream((M.map_(M.let_(M.bind_(M.bind_(M.do, "state", () => Ref.makeManagedRef(true)), "chunks", () => self.proc), "pull", ({ chunks, state }) => T.chain_(chunks, (os) => {
        return Ref.modify_(state, (first) => {
            let builder = A.empty();
            let flagResult = first;
            for (const o of os) {
                if (flagResult) {
                    flagResult = false;
                    builder = A.append_(builder, o);
                }
                else {
                    builder = A.append_(A.append_(builder, middle), o);
                }
            }
            return Tp.tuple(builder, flagResult);
        });
    })), ({ pull }) => pull)));
}
exports.intersperse_ = intersperse_;
/**
 * Intersperse stream with provided element similar to <code>List.mkString</code>.
 */
function intersperse(middle) {
    return (self) => intersperse_(self, middle);
}
exports.intersperse = intersperse;
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