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node_modules/effect/dist/esm/internal/differ/orPatch.js

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+import * as Chunk from "../../Chunk.js";
+import * as E from "../../Either.js";
+import * as Equal from "../../Equal.js";
+import * as Dual from "../../Function.js";
+import { Structural } from "../data.js";
+/** @internal */
+export const OrPatchTypeId = /*#__PURE__*/Symbol.for("effect/DifferOrPatch");
+function variance(a) {
+  return a;
+}
+/** @internal */
+const PatchProto = {
+  ...Structural.prototype,
+  [OrPatchTypeId]: {
+    _Value: variance,
+    _Key: variance,
+    _Patch: variance
+  }
+};
+const EmptyProto = /*#__PURE__*/Object.assign(/*#__PURE__*/Object.create(PatchProto), {
+  _tag: "Empty"
+});
+const _empty = /*#__PURE__*/Object.create(EmptyProto);
+/** @internal */
+export const empty = () => _empty;
+const AndThenProto = /*#__PURE__*/Object.assign(/*#__PURE__*/Object.create(PatchProto), {
+  _tag: "AndThen"
+});
+/** @internal */
+export const makeAndThen = (first, second) => {
+  const o = Object.create(AndThenProto);
+  o.first = first;
+  o.second = second;
+  return o;
+};
+const SetLeftProto = /*#__PURE__*/Object.assign(/*#__PURE__*/Object.create(PatchProto), {
+  _tag: "SetLeft"
+});
+/** @internal */
+export const makeSetLeft = value => {
+  const o = Object.create(SetLeftProto);
+  o.value = value;
+  return o;
+};
+const SetRightProto = /*#__PURE__*/Object.assign(/*#__PURE__*/Object.create(PatchProto), {
+  _tag: "SetRight"
+});
+/** @internal */
+export const makeSetRight = value => {
+  const o = Object.create(SetRightProto);
+  o.value = value;
+  return o;
+};
+const UpdateLeftProto = /*#__PURE__*/Object.assign(/*#__PURE__*/Object.create(PatchProto), {
+  _tag: "UpdateLeft"
+});
+/** @internal */
+export const makeUpdateLeft = patch => {
+  const o = Object.create(UpdateLeftProto);
+  o.patch = patch;
+  return o;
+};
+const UpdateRightProto = /*#__PURE__*/Object.assign(/*#__PURE__*/Object.create(PatchProto), {
+  _tag: "UpdateRight"
+});
+/** @internal */
+export const makeUpdateRight = patch => {
+  const o = Object.create(UpdateRightProto);
+  o.patch = patch;
+  return o;
+};
+/** @internal */
+export const diff = options => {
+  switch (options.oldValue._tag) {
+    case "Left":
+      {
+        switch (options.newValue._tag) {
+          case "Left":
+            {
+              const valuePatch = options.left.diff(options.oldValue.left, options.newValue.left);
+              if (Equal.equals(valuePatch, options.left.empty)) {
+                return empty();
+              }
+              return makeUpdateLeft(valuePatch);
+            }
+          case "Right":
+            {
+              return makeSetRight(options.newValue.right);
+            }
+        }
+      }
+    case "Right":
+      {
+        switch (options.newValue._tag) {
+          case "Left":
+            {
+              return makeSetLeft(options.newValue.left);
+            }
+          case "Right":
+            {
+              const valuePatch = options.right.diff(options.oldValue.right, options.newValue.right);
+              if (Equal.equals(valuePatch, options.right.empty)) {
+                return empty();
+              }
+              return makeUpdateRight(valuePatch);
+            }
+        }
+      }
+  }
+};
+/** @internal */
+export const combine = /*#__PURE__*/Dual.dual(2, (self, that) => makeAndThen(self, that));
+/** @internal */
+export const patch = /*#__PURE__*/Dual.dual(2, (self, {
+  left,
+  oldValue,
+  right
+}) => {
+  if (self._tag === "Empty") {
+    return oldValue;
+  }
+  let patches = Chunk.of(self);
+  let result = oldValue;
+  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 "UpdateLeft":
+        {
+          if (result._tag === "Left") {
+            result = E.left(left.patch(head.patch, result.left));
+          }
+          patches = tail;
+          break;
+        }
+      case "UpdateRight":
+        {
+          if (result._tag === "Right") {
+            result = E.right(right.patch(head.patch, result.right));
+          }
+          patches = tail;
+          break;
+        }
+      case "SetLeft":
+        {
+          result = E.left(head.value);
+          patches = tail;
+          break;
+        }
+      case "SetRight":
+        {
+          result = E.right(head.value);
+          patches = tail;
+          break;
+        }
+    }
+  }
+  return result;
+});
+//# sourceMappingURL=orPatch.js.map