node-nlp
Version:
Library for NLU (Natural Language Understanding) done in Node.js
55 lines (54 loc) • 2.36 kB
JavaScript
;
var __extends = (this && this.__extends) || (function () {
var extendStatics = Object.setPrototypeOf ||
({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
return function (d, b) {
extendStatics(d, b);
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
})();
Object.defineProperty(exports, "__esModule", { value: true });
var IntentRecognizer_1 = require("./IntentRecognizer");
var RegExpRecognizer = (function (_super) {
__extends(RegExpRecognizer, _super);
function RegExpRecognizer(intent, expressions) {
var _this = _super.call(this) || this;
_this.intent = intent;
if (expressions instanceof RegExp || typeof expressions.exec === 'function') {
_this.expressions = { '*': expressions };
}
else {
_this.expressions = (expressions || {});
}
return _this;
}
RegExpRecognizer.prototype.onRecognize = function (context, cb) {
var result = { score: 0.0, intent: null };
if (context && context.message && context.message.text) {
var utterance = context.message.text;
var locale = context.locale || '*';
var exp = this.expressions.hasOwnProperty(locale) ? this.expressions[locale] : this.expressions['*'];
if (exp) {
var matches = new RegExp(exp).exec(context.message.text);
if (matches && matches.length) {
var matched = matches[0];
result.score = 0.4 + ((matched.length / context.message.text.length) * 0.6);
result.intent = this.intent;
result.expression = exp;
result.matched = matches;
}
cb(null, result);
}
else {
cb(new Error("Expression not found for locale '" + locale + "'."), null);
}
}
else {
cb(null, result);
}
};
return RegExpRecognizer;
}(IntentRecognizer_1.IntentRecognizer));
exports.RegExpRecognizer = RegExpRecognizer;