botbuilder-dialogs-adaptive/lib/selectors/trueSelector.js

Rule system for the Microsoft BotBuilder dialog system.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.TrueSelector = void 0;
/**
 * @module botbuilder-dialogs-adaptive
 */
/**
 * Copyright (c) Microsoft Corporation. All rights reserved.
 * Licensed under the MIT License.
 */
const triggerSelector_1 = require("../triggerSelector");
/**
 * Select all rules which evaluate to true.
 */
class TrueSelector extends triggerSelector_1.TriggerSelector {
    /**
     * Initialize the selector with the set of rules.
     *
     * @param conditionals Possible rules to match.
     * @param evaluate True if rules should be evaluated on select.
     */
    initialize(conditionals, evaluate) {
        this._conditionals = conditionals;
        this._evaluate = evaluate;
    }
    /**
     * Select the best rule to execute.
     *
     * @param actionContext Dialog context for evaluation.
     * @returns A Promise with a number array.
     */
    select(actionContext) {
        const candidates = [];
        for (let i = 0; i < this._conditionals.length; i++) {
            const conditional = this._conditionals[i];
            if (this._evaluate) {
                const expression = conditional.getExpression();
                const { value, error } = expression.tryEvaluate(actionContext.state);
                if (value && !error) {
                    candidates.push(conditional);
                }
            }
            else {
                candidates.push(conditional);
            }
        }
        return Promise.resolve(candidates);
    }
}
exports.TrueSelector = TrueSelector;
TrueSelector.$kind = 'Microsoft.TrueSelector';
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