138 lines
4.4 KiB
JavaScript
138 lines
4.4 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.patch = exports.empty = exports.diff = exports.combine = exports.ReadonlyArrayPatchTypeId = void 0;
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var Arr = _interopRequireWildcard(require("../../Array.js"));
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var Equal = _interopRequireWildcard(require("../../Equal.js"));
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var Dual = _interopRequireWildcard(require("../../Function.js"));
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var Data = _interopRequireWildcard(require("../data.js"));
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function _interopRequireWildcard(e, t) { if ("function" == typeof WeakMap) var r = new WeakMap(), n = new WeakMap(); return (_interopRequireWildcard = function (e, t) { if (!t && e && e.__esModule) return e; var o, i, f = { __proto__: null, default: e }; if (null === e || "object" != typeof e && "function" != typeof e) return f; if (o = t ? n : r) { if (o.has(e)) return o.get(e); o.set(e, f); } for (const t in e) "default" !== t && {}.hasOwnProperty.call(e, t) && ((i = (o = Object.defineProperty) && Object.getOwnPropertyDescriptor(e, t)) && (i.get || i.set) ? o(f, t, i) : f[t] = e[t]); return f; })(e, t); }
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/** @internal */
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const ReadonlyArrayPatchTypeId = exports.ReadonlyArrayPatchTypeId = /*#__PURE__*/Symbol.for("effect/DifferReadonlyArrayPatch");
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function variance(a) {
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return a;
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}
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const PatchProto = {
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...Data.Structural.prototype,
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[ReadonlyArrayPatchTypeId]: {
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_Value: variance,
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_Patch: variance
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}
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};
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const EmptyProto = /*#__PURE__*/Object.assign(/*#__PURE__*/Object.create(PatchProto), {
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_tag: "Empty"
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});
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const _empty = /*#__PURE__*/Object.create(EmptyProto);
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/**
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* @internal
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*/
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const empty = () => _empty;
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exports.empty = empty;
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const AndThenProto = /*#__PURE__*/Object.assign(/*#__PURE__*/Object.create(PatchProto), {
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_tag: "AndThen"
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});
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const makeAndThen = (first, second) => {
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const o = Object.create(AndThenProto);
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o.first = first;
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o.second = second;
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return o;
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};
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const AppendProto = /*#__PURE__*/Object.assign(/*#__PURE__*/Object.create(PatchProto), {
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_tag: "Append"
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});
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const makeAppend = values => {
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const o = Object.create(AppendProto);
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o.values = values;
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return o;
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};
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const SliceProto = /*#__PURE__*/Object.assign(/*#__PURE__*/Object.create(PatchProto), {
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_tag: "Slice"
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});
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const makeSlice = (from, until) => {
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const o = Object.create(SliceProto);
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o.from = from;
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o.until = until;
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return o;
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};
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const UpdateProto = /*#__PURE__*/Object.assign(/*#__PURE__*/Object.create(PatchProto), {
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_tag: "Update"
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});
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const makeUpdate = (index, patch) => {
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const o = Object.create(UpdateProto);
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o.index = index;
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o.patch = patch;
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return o;
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};
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/** @internal */
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const diff = options => {
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let i = 0;
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let patch = empty();
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while (i < options.oldValue.length && i < options.newValue.length) {
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const oldElement = options.oldValue[i];
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const newElement = options.newValue[i];
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const valuePatch = options.differ.diff(oldElement, newElement);
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if (!Equal.equals(valuePatch, options.differ.empty)) {
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patch = combine(patch, makeUpdate(i, valuePatch));
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}
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i = i + 1;
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}
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if (i < options.oldValue.length) {
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patch = combine(patch, makeSlice(0, i));
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}
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if (i < options.newValue.length) {
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patch = combine(patch, makeAppend(Arr.drop(i)(options.newValue)));
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}
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return patch;
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};
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/** @internal */
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exports.diff = diff;
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const combine = exports.combine = /*#__PURE__*/Dual.dual(2, (self, that) => makeAndThen(self, that));
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/** @internal */
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const patch = exports.patch = /*#__PURE__*/Dual.dual(3, (self, oldValue, differ) => {
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if (self._tag === "Empty") {
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return oldValue;
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}
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let readonlyArray = oldValue.slice();
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let patches = Arr.of(self);
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while (Arr.isNonEmptyArray(patches)) {
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const head = Arr.headNonEmpty(patches);
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const tail = Arr.tailNonEmpty(patches);
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switch (head._tag) {
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case "Empty":
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{
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patches = tail;
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break;
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}
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case "AndThen":
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{
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tail.unshift(head.first, head.second);
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patches = tail;
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break;
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}
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case "Append":
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{
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for (const value of head.values) {
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readonlyArray.push(value);
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}
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patches = tail;
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break;
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}
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case "Slice":
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{
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readonlyArray = readonlyArray.slice(head.from, head.until);
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patches = tail;
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break;
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}
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case "Update":
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{
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readonlyArray[head.index] = differ.patch(head.patch, readonlyArray[head.index]);
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patches = tail;
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break;
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}
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}
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}
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return readonlyArray;
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});
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//# sourceMappingURL=readonlyArrayPatch.js.map
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