adaptive-expressions
Version:
Common Expression Language
45 lines • 1.75 kB
JavaScript
;
/**
* @module adaptive-expressions
*/
/**
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License.
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.IsDate = void 0;
const expressionEvaluator_1 = require("../expressionEvaluator");
const expressionType_1 = require("../expressionType");
const functionUtils_1 = require("../functionUtils");
const functionUtils_internal_1 = require("../functionUtils.internal");
const returnType_1 = require("../returnType");
/**
* Return true if a given `TimexProperty` or timex string refers to a valid date.
* Valid dates contain the month and dayOfMonth, or contain the dayOfWeek.
*/
class IsDate extends expressionEvaluator_1.ExpressionEvaluator {
/**
* Initializes a new instance of the [IsDate](xref:adaptive-expressions.IsDate) class.
*/
constructor() {
super(expressionType_1.ExpressionType.IsDate, IsDate.evaluator, returnType_1.ReturnType.Boolean, functionUtils_1.FunctionUtils.validateUnary);
}
/**
* @private
*/
static evaluator(expr, state, options) {
let parsed;
let value = false;
const { args, error: childrenError } = functionUtils_1.FunctionUtils.evaluateChildren(expr, state, options);
let error = childrenError;
if (!error) {
({ timexProperty: parsed, error: error } = functionUtils_internal_1.InternalFunctionUtils.parseTimexProperty(args[0]));
}
if (parsed && !error) {
value = (parsed.month !== undefined && parsed.dayOfMonth !== undefined) || parsed.dayOfWeek !== undefined;
}
return { value, error };
}
}
exports.IsDate = IsDate;
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