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

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+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.patch = exports.empty = exports.diff = exports.combine = exports.ReadonlyArrayPatchTypeId = void 0;
+var Arr = _interopRequireWildcard(require("../../Array.js"));
+var Equal = _interopRequireWildcard(require("../../Equal.js"));
+var Dual = _interopRequireWildcard(require("../../Function.js"));
+var Data = _interopRequireWildcard(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 ReadonlyArrayPatchTypeId = exports.ReadonlyArrayPatchTypeId = /*#__PURE__*/Symbol.for("effect/DifferReadonlyArrayPatch");
+function variance(a) {
+  return a;
+}
+const PatchProto = {
+  ...Data.Structural.prototype,
+  [ReadonlyArrayPatchTypeId]: {
+    _Value: 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"
+});
+const makeAndThen = (first, second) => {
+  const o = Object.create(AndThenProto);
+  o.first = first;
+  o.second = second;
+  return o;
+};
+const AppendProto = /*#__PURE__*/Object.assign(/*#__PURE__*/Object.create(PatchProto), {
+  _tag: "Append"
+});
+const makeAppend = values => {
+  const o = Object.create(AppendProto);
+  o.values = values;
+  return o;
+};
+const SliceProto = /*#__PURE__*/Object.assign(/*#__PURE__*/Object.create(PatchProto), {
+  _tag: "Slice"
+});
+const makeSlice = (from, until) => {
+  const o = Object.create(SliceProto);
+  o.from = from;
+  o.until = until;
+  return o;
+};
+const UpdateProto = /*#__PURE__*/Object.assign(/*#__PURE__*/Object.create(PatchProto), {
+  _tag: "Update"
+});
+const makeUpdate = (index, patch) => {
+  const o = Object.create(UpdateProto);
+  o.index = index;
+  o.patch = patch;
+  return o;
+};
+/** @internal */
+const diff = options => {
+  let i = 0;
+  let patch = empty();
+  while (i < options.oldValue.length && i < options.newValue.length) {
+    const oldElement = options.oldValue[i];
+    const newElement = options.newValue[i];
+    const valuePatch = options.differ.diff(oldElement, newElement);
+    if (!Equal.equals(valuePatch, options.differ.empty)) {
+      patch = combine(patch, makeUpdate(i, valuePatch));
+    }
+    i = i + 1;
+  }
+  if (i < options.oldValue.length) {
+    patch = combine(patch, makeSlice(0, i));
+  }
+  if (i < options.newValue.length) {
+    patch = combine(patch, makeAppend(Arr.drop(i)(options.newValue)));
+  }
+  return patch;
+};
+/** @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(3, (self, oldValue, differ) => {
+  if (self._tag === "Empty") {
+    return oldValue;
+  }
+  let readonlyArray = oldValue.slice();
+  let patches = Arr.of(self);
+  while (Arr.isNonEmptyArray(patches)) {
+    const head = Arr.headNonEmpty(patches);
+    const tail = Arr.tailNonEmpty(patches);
+    switch (head._tag) {
+      case "Empty":
+        {
+          patches = tail;
+          break;
+        }
+      case "AndThen":
+        {
+          tail.unshift(head.first, head.second);
+          patches = tail;
+          break;
+        }
+      case "Append":
+        {
+          for (const value of head.values) {
+            readonlyArray.push(value);
+          }
+          patches = tail;
+          break;
+        }
+      case "Slice":
+        {
+          readonlyArray = readonlyArray.slice(head.from, head.until);
+          patches = tail;
+          break;
+        }
+      case "Update":
+        {
+          readonlyArray[head.index] = differ.patch(head.patch, readonlyArray[head.index]);
+          patches = tail;
+          break;
+        }
+    }
+  }
+  return readonlyArray;
+});
+//# sourceMappingURL=readonlyArrayPatch.js.map