adaptive-expressions
Version:
Common Expression Language
70 lines • 3.15 kB
JavaScript
;
/**
* @module adaptive-expressions
*/
/**
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License.
*/
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.TimeTransformEvaluator = void 0;
const dayjs_1 = __importDefault(require("dayjs"));
const utc_1 = __importDefault(require("dayjs/plugin/utc"));
dayjs_1.default.extend(utc_1.default);
const expressionEvaluator_1 = require("../expressionEvaluator");
const functionUtils_1 = require("../functionUtils");
const functionUtils_internal_1 = require("../functionUtils.internal");
const returnType_1 = require("../returnType");
/**
* Evaluator that transforms a datetime to another datetime.
*/
class TimeTransformEvaluator extends expressionEvaluator_1.ExpressionEvaluator {
/**
* Initializes a new instance of the [TimeTransformEvaluator](xref:adaptive-expressions.TimeTransformEvaluator) class.
*
* @param type Name of the built-in function.
* @param func The evaluation function, it takes a timestamp and the number of transformation, and returns a `Date`.
*/
constructor(type, func) {
super(type, TimeTransformEvaluator.evaluator(func), returnType_1.ReturnType.String, TimeTransformEvaluator.validator);
}
/**
* @private
*/
static evaluator(func) {
return (expression, state, options) => {
let result;
let locale = options.locale ? options.locale : Intl.DateTimeFormat().resolvedOptions().locale;
let format = functionUtils_1.FunctionUtils.DefaultDateTimeFormat;
const { args, error: childrenError } = functionUtils_1.FunctionUtils.evaluateChildren(expression, state, options);
let error = childrenError;
if (!error) {
({ format, locale } = functionUtils_1.FunctionUtils.determineFormatAndLocale(args, 4, format, locale));
if (typeof args[0] === 'string' && functionUtils_1.FunctionUtils.isNumber(args[1])) {
error = functionUtils_internal_1.InternalFunctionUtils.verifyISOTimestamp(args[0]);
if (!error) {
result = (0, dayjs_1.default)(func(new Date(args[0]), args[1]))
.locale(locale)
.utc()
.format(format);
}
}
else {
error = `${expression} should contain an ISO format timestamp and a time interval integer.`;
}
}
return { value: result, error };
};
}
/**
* @private
*/
static validator(expression) {
functionUtils_1.FunctionUtils.validateOrder(expression, [returnType_1.ReturnType.String, returnType_1.ReturnType.String], returnType_1.ReturnType.String, returnType_1.ReturnType.Number);
}
}
exports.TimeTransformEvaluator = TimeTransformEvaluator;
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