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/*
Copyright 2019 Florian Dold
Copyright 2017 Jeremy Scheff
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.
*/
import compareKeys from "./util/cmp";
import { DataError } from "./util/errors";
import { Key } from "./util/types";
import valueToKey from "./util/valueToKey";
// http://www.w3.org/TR/2015/REC-IndexedDB-20150108/#range-concept
export class BridgeIDBKeyRange {
public static only(value: Key) {
if (arguments.length === 0) {
throw new TypeError();
}
value = valueToKey(value);
return new BridgeIDBKeyRange(value, value, false, false);
}
static lowerBound(lower: Key, open: boolean = false) {
if (arguments.length === 0) {
throw new TypeError();
}
lower = valueToKey(lower);
return new BridgeIDBKeyRange(lower, undefined, open, true);
}
static upperBound(upper: Key, open: boolean = false) {
if (arguments.length === 0) {
throw new TypeError();
}
upper = valueToKey(upper);
return new BridgeIDBKeyRange(undefined, upper, true, open);
}
static bound(
lower: Key,
upper: Key,
lowerOpen: boolean = false,
upperOpen: boolean = false,
) {
if (arguments.length < 2) {
throw new TypeError();
}
const cmpResult = compareKeys(lower, upper);
if (cmpResult === 1 || (cmpResult === 0 && (lowerOpen || upperOpen))) {
throw new DataError();
}
lower = valueToKey(lower);
upper = valueToKey(upper);
return new BridgeIDBKeyRange(lower, upper, lowerOpen, upperOpen);
}
readonly lower: Key | undefined;
readonly upper: Key | undefined;
readonly lowerOpen: boolean;
readonly upperOpen: boolean;
constructor(
lower: Key | undefined,
upper: Key | undefined,
lowerOpen: boolean,
upperOpen: boolean,
) {
this.lower = lower;
this.upper = upper;
this.lowerOpen = lowerOpen;
this.upperOpen = upperOpen;
}
// https://w3c.github.io/IndexedDB/#dom-idbkeyrange-includes
includes(key: Key) {
if (arguments.length === 0) {
throw new TypeError();
}
key = valueToKey(key);
if (this.lower !== undefined) {
const cmpResult = compareKeys(this.lower, key);
if (cmpResult === 1 || (cmpResult === 0 && this.lowerOpen)) {
return false;
}
}
if (this.upper !== undefined) {
const cmpResult = compareKeys(this.upper, key);
if (cmpResult === -1 || (cmpResult === 0 && this.upperOpen)) {
return false;
}
}
return true;
}
toString() {
return "[object IDBKeyRange]";
}
static _valueToKeyRange(value: any, nullDisallowedFlag: boolean = false) {
if (value instanceof BridgeIDBKeyRange) {
return value;
}
if (value === null || value === undefined) {
if (nullDisallowedFlag) {
throw new DataError();
}
return new BridgeIDBKeyRange(undefined, undefined, false, false);
}
const key = valueToKey(value);
return BridgeIDBKeyRange.only(key);
}
}
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