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docs/dist/shift-reducer/reducers.js

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+/*
+ * Copyright 2018 Shape Security, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License")
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+'use strict';
+
+import MonoidalReducer from './monoidal-reducer.js';
+import ThunkedMonoidalReducer from './thunked-monoidal-reducer.js';
+
+const PlusMonoid = {
+  empty: () => 0,
+  concat: (a, b) => a + b,
+};
+
+const ConcatMonoid = {
+  empty: () => [],
+  concat: (a, b) => a.concat(b),
+};
+
+const AndMonoid = {
+  empty: () => true,
+  concat: (a, b) => a && b,
+  concatThunk: (a, b) => a && b(),
+};
+
+const OrMonoid = {
+  empty: () => false,
+  concat: (a, b) => a || b,
+  concatThunk: (a, b) => a || b(),
+};
+
+
+export class PlusReducer extends MonoidalReducer {
+  constructor() {
+    super(PlusMonoid);
+  }
+}
+
+export class ThunkedPlusReducer extends ThunkedMonoidalReducer {
+  constructor() {
+    super(PlusMonoid);
+  }
+}
+
+export class ConcatReducer extends MonoidalReducer {
+  constructor() {
+    super(ConcatMonoid);
+  }
+}
+
+export class ThunkedConcatReducer extends ThunkedMonoidalReducer {
+  constructor() {
+    super(ConcatMonoid);
+  }
+}
+
+export class AndReducer extends MonoidalReducer {
+  constructor() {
+    super(AndMonoid);
+  }
+}
+
+export class ThunkedAndReducer extends ThunkedMonoidalReducer {
+  constructor() {
+    super(AndMonoid);
+  }
+}
+
+export class OrReducer extends MonoidalReducer {
+  constructor() {
+    super(OrMonoid);
+  }
+}
+
+export class ThunkedOrReducer extends ThunkedMonoidalReducer {
+  constructor() {
+    super(OrMonoid);
+  }
+}