chrono-node/src/common/refiners/AbstractMergeDateTimeRefiner.ts

A natural language date parser in Javascript

/*

*/

import { MergingRefiner } from "../abstractRefiners";
import { ParsingResult } from "../../results";
import { mergeDateTimeResult } from "../../calculation/mergingCalculation";

export default abstract class AbstractMergeDateTimeRefiner extends MergingRefiner {
    abstract patternBetween(): RegExp;

    shouldMergeResults(textBetween: string, currentResult: ParsingResult, nextResult: ParsingResult): boolean {
        return (
            ((currentResult.start.isOnlyDate() && nextResult.start.isOnlyTime()) ||
                (nextResult.start.isOnlyDate() && currentResult.start.isOnlyTime())) &&
            textBetween.match(this.patternBetween()) != null
        );
    }

    mergeResults(textBetween: string, currentResult: ParsingResult, nextResult: ParsingResult): ParsingResult {
        const result = currentResult.start.isOnlyDate()
            ? mergeDateTimeResult(currentResult, nextResult)
            : mergeDateTimeResult(nextResult, currentResult);

        result.index = currentResult.index;
        result.text = currentResult.text + textBetween + nextResult.text;
        return result;
    }
}