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_node_modules/effect/dist/cjs/internal/fiberRefs/patch.js

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+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.patch = exports.empty = exports.diff = exports.combine = exports.OP_UPDATE = exports.OP_REMOVE = exports.OP_EMPTY = exports.OP_AND_THEN = exports.OP_ADD = void 0;
+var Arr = _interopRequireWildcard(require("../../Array.js"));
+var _Equal = require("../../Equal.js");
+var _Function = require("../../Function.js");
+var fiberRefs_ = _interopRequireWildcard(require("../fiberRefs.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 OP_EMPTY = exports.OP_EMPTY = "Empty";
+/** @internal */
+const OP_ADD = exports.OP_ADD = "Add";
+/** @internal */
+const OP_REMOVE = exports.OP_REMOVE = "Remove";
+/** @internal */
+const OP_UPDATE = exports.OP_UPDATE = "Update";
+/** @internal */
+const OP_AND_THEN = exports.OP_AND_THEN = "AndThen";
+/** @internal */
+const empty = exports.empty = {
+  _tag: OP_EMPTY
+};
+/** @internal */
+const diff = (oldValue, newValue) => {
+  const missingLocals = new Map(oldValue.locals);
+  let patch = empty;
+  for (const [fiberRef, pairs] of newValue.locals.entries()) {
+    const newValue = Arr.headNonEmpty(pairs)[1];
+    const old = missingLocals.get(fiberRef);
+    if (old !== undefined) {
+      const oldValue = Arr.headNonEmpty(old)[1];
+      if (!(0, _Equal.equals)(oldValue, newValue)) {
+        patch = combine({
+          _tag: OP_UPDATE,
+          fiberRef,
+          patch: fiberRef.diff(oldValue, newValue)
+        })(patch);
+      }
+    } else {
+      patch = combine({
+        _tag: OP_ADD,
+        fiberRef,
+        value: newValue
+      })(patch);
+    }
+    missingLocals.delete(fiberRef);
+  }
+  for (const [fiberRef] of missingLocals.entries()) {
+    patch = combine({
+      _tag: OP_REMOVE,
+      fiberRef
+    })(patch);
+  }
+  return patch;
+};
+/** @internal */
+exports.diff = diff;
+const combine = exports.combine = /*#__PURE__*/(0, _Function.dual)(2, (self, that) => ({
+  _tag: OP_AND_THEN,
+  first: self,
+  second: that
+}));
+/** @internal */
+const patch = exports.patch = /*#__PURE__*/(0, _Function.dual)(3, (self, fiberId, oldValue) => {
+  let fiberRefs = oldValue;
+  let patches = Arr.of(self);
+  while (Arr.isNonEmptyReadonlyArray(patches)) {
+    const head = Arr.headNonEmpty(patches);
+    const tail = Arr.tailNonEmpty(patches);
+    switch (head._tag) {
+      case OP_EMPTY:
+        {
+          patches = tail;
+          break;
+        }
+      case OP_ADD:
+        {
+          fiberRefs = fiberRefs_.updateAs(fiberRefs, {
+            fiberId,
+            fiberRef: head.fiberRef,
+            value: head.value
+          });
+          patches = tail;
+          break;
+        }
+      case OP_REMOVE:
+        {
+          fiberRefs = fiberRefs_.delete_(fiberRefs, head.fiberRef);
+          patches = tail;
+          break;
+        }
+      case OP_UPDATE:
+        {
+          const value = fiberRefs_.getOrDefault(fiberRefs, head.fiberRef);
+          fiberRefs = fiberRefs_.updateAs(fiberRefs, {
+            fiberId,
+            fiberRef: head.fiberRef,
+            value: head.fiberRef.patch(head.patch)(value)
+          });
+          patches = tail;
+          break;
+        }
+      case OP_AND_THEN:
+        {
+          patches = Arr.prepend(head.first)(Arr.prepend(head.second)(tail));
+          break;
+        }
+    }
+  }
+  return fiberRefs;
+});
+//# sourceMappingURL=patch.js.map