lambdaworld-archive/node_modules/shift-reducer/src/reducers.js

92 lines
2.1 KiB
JavaScript

/*
* 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';
const MonoidalReducer = require('../gen/monoidal-reducer.js');
const ThunkedMonoidalReducer = require('../gen/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(),
};
exports.PlusReducer = class PlusReducer extends MonoidalReducer {
constructor() {
super(PlusMonoid);
}
};
exports.ThunkedPlusReducer = class ThunkedPlusReducer extends ThunkedMonoidalReducer {
constructor() {
super(PlusMonoid);
}
};
exports.ConcatReducer = class ConcatReducer extends MonoidalReducer {
constructor() {
super(ConcatMonoid);
}
};
exports.ThunkedConcatReducer = class ThunkedConcatReducer extends ThunkedMonoidalReducer {
constructor() {
super(ConcatMonoid);
}
};
exports.AndReducer = class AndReducer extends MonoidalReducer {
constructor() {
super(AndMonoid);
}
};
exports.ThunkedAndReducer = class ThunkedAndReducer extends ThunkedMonoidalReducer {
constructor() {
super(AndMonoid);
}
};
exports.OrReducer = class OrReducer extends MonoidalReducer {
constructor() {
super(OrMonoid);
}
};
exports.ThunkedOrReducer = class ThunkedOrReducer extends ThunkedMonoidalReducer {
constructor() {
super(OrMonoid);
}
};