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node_modules/effect/dist/cjs/internal/differ/hashSetPatch.js

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+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.patch = exports.makeRemove = exports.makeAndThen = exports.makeAdd = exports.empty = exports.diff = exports.combine = exports.HashSetPatchTypeId = void 0;
+var Chunk = _interopRequireWildcard(require("../../Chunk.js"));
+var Dual = _interopRequireWildcard(require("../../Function.js"));
+var HashSet = _interopRequireWildcard(require("../../HashSet.js"));
+var _data = require("../data.js");
+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); }
+/** @internal */
+const HashSetPatchTypeId = exports.HashSetPatchTypeId = /*#__PURE__*/Symbol.for("effect/DifferHashSetPatch");
+function variance(a) {
+  return a;
+}
+/** @internal */
+const PatchProto = {
+  ..._data.Structural.prototype,
+  [HashSetPatchTypeId]: {
+    _Value: variance,
+    _Key: variance,
+    _Patch: variance
+  }
+};
+const EmptyProto = /*#__PURE__*/Object.assign(/*#__PURE__*/Object.create(PatchProto), {
+  _tag: "Empty"
+});
+const _empty = /*#__PURE__*/Object.create(EmptyProto);
+/** @internal */
+const empty = () => _empty;
+exports.empty = empty;
+const AndThenProto = /*#__PURE__*/Object.assign(/*#__PURE__*/Object.create(PatchProto), {
+  _tag: "AndThen"
+});
+/** @internal */
+const makeAndThen = (first, second) => {
+  const o = Object.create(AndThenProto);
+  o.first = first;
+  o.second = second;
+  return o;
+};
+exports.makeAndThen = makeAndThen;
+const AddProto = /*#__PURE__*/Object.assign(/*#__PURE__*/Object.create(PatchProto), {
+  _tag: "Add"
+});
+/** @internal */
+const makeAdd = value => {
+  const o = Object.create(AddProto);
+  o.value = value;
+  return o;
+};
+exports.makeAdd = makeAdd;
+const RemoveProto = /*#__PURE__*/Object.assign(/*#__PURE__*/Object.create(PatchProto), {
+  _tag: "Remove"
+});
+/** @internal */
+const makeRemove = value => {
+  const o = Object.create(RemoveProto);
+  o.value = value;
+  return o;
+};
+/** @internal */
+exports.makeRemove = makeRemove;
+const diff = (oldValue, newValue) => {
+  const [removed, patch] = HashSet.reduce([oldValue, empty()], ([set, patch], value) => {
+    if (HashSet.has(value)(set)) {
+      return [HashSet.remove(value)(set), patch];
+    }
+    return [set, combine(makeAdd(value))(patch)];
+  })(newValue);
+  return HashSet.reduce(patch, (patch, value) => combine(makeRemove(value))(patch))(removed);
+};
+/** @internal */
+exports.diff = diff;
+const combine = exports.combine = /*#__PURE__*/Dual.dual(2, (self, that) => makeAndThen(self, that));
+/** @internal */
+const patch = exports.patch = /*#__PURE__*/Dual.dual(2, (self, oldValue) => {
+  if (self._tag === "Empty") {
+    return oldValue;
+  }
+  let set = oldValue;
+  let patches = Chunk.of(self);
+  while (Chunk.isNonEmpty(patches)) {
+    const head = Chunk.headNonEmpty(patches);
+    const tail = Chunk.tailNonEmpty(patches);
+    switch (head._tag) {
+      case "Empty":
+        {
+          patches = tail;
+          break;
+        }
+      case "AndThen":
+        {
+          patches = Chunk.prepend(head.first)(Chunk.prepend(head.second)(tail));
+          break;
+        }
+      case "Add":
+        {
+          set = HashSet.add(head.value)(set);
+          patches = tail;
+          break;
+        }
+      case "Remove":
+        {
+          set = HashSet.remove(head.value)(set);
+          patches = tail;
+        }
+    }
+  }
+  return set;
+});
+//# sourceMappingURL=hashSetPatch.js.map