/**
* Copyright 2017 Google 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.
*/
import { assert } from '@firebase/util';
import { doubleToIEEE754String } from '../util/util';
import { contains } from '@firebase/util';
import { Node } from './Node';
let MAX_NODE: Node;
export function setMaxNode(val: Node) {
MAX_NODE = val;
}
/**
* @param {(!string|!number)} priority
* @return {!string}
*/
export const priorityHashText = function(priority: string | number): string {
if (typeof priority === 'number')
return 'number:' + doubleToIEEE754String(priority);
else return 'string:' + priority;
};
/**
* Validates that a priority snapshot Node is valid.
*
* @param {!Node} priorityNode
*/
export const validatePriorityNode = function(priorityNode: Node) {
if (priorityNode.isLeafNode()) {
const val = priorityNode.val();
assert(
typeof val === 'string' ||
typeof val === 'number' ||
(typeof val === 'object' && contains(val, '.sv')),
'Priority must be a string or number.'
);
} else {
assert(
priorityNode === MAX_NODE || priorityNode.isEmpty(),
'priority of unexpected type.'
);
}
// Don't call getPriority() on MAX_NODE to avoid hitting assertion.
assert(
priorityNode === MAX_NODE || priorityNode.getPriority().isEmpty(),
"Priority nodes can't have a priority of their own."
);
};
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