# All files Result.ts

94.37% Statements 67/71
88.68% Branches 47/53
100% Functions 15/15
94.2% Lines 65/69

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     import { Converter } from "./Converter";
    import { ProcessLineResult } from "./Processor";
    import P from "bluebird";
    import CSVError from "./CSVError";

    export class Result {
      private get needEmitLine(): boolean {
        return !!this.converter.parseRuntime.subscribe && !!this.converter.parseRuntime.subscribe.onNext || this.needPushDownstream
      }
      private _needPushDownstream?: boolean;
      private get needPushDownstream(): boolean {
        if (this._needPushDownstream === undefined) {
          this._needPushDownstream = this.converter.listeners("data").length > 0 || this.converter.listeners("readable").length > 0;
        }
        return this._needPushDownstream;
      }
      private get needEmitAll(): boolean {
        return !!this.converter.parseRuntime.then;
      }
      private finalResult: any[] = [];
      constructor(private converter: Converter) { }
      processResult(resultLines: ProcessLineResult[]): P<any> {
        const startPos = this.converter.parseRuntime.parsedLineNumber;
        // let prom: P<any>;
        return new P((resolve, reject) => {
          if (this.needEmitLine) {
            processLineByLine(
              resultLines,
              this.converter,
              0,
              this.needPushDownstream,
              (err) => {
                Iif (err) {
                  reject(err);
                } else {
                  this.appendFinalResult(resultLines);
                  resolve();
                }
              },
            )
          } else {
            this.appendFinalResult(resultLines);
            resolve();
          }
        })
      }
      appendFinalResult(lines: any[]) {
        if (this.needEmitAll) {
          this.finalResult = this.finalResult.concat(lines);
        }
        this.converter.parseRuntime.parsedLineNumber += lines.length;
      }
      processError(err: CSVError) {
        Iif (this.converter.parseRuntime.subscribe && this.converter.parseRuntime.subscribe.onError) {
          this.converter.parseRuntime.subscribe.onError(err);
        }
        if (this.converter.parseRuntime.then && this.converter.parseRuntime.then.onrejected) {
          this.converter.parseRuntime.then.onrejected(err);
        }
      }
      endProcess() {
        if (this.needEmitAll) {
          Eif (this.converter.parseRuntime.then && this.converter.parseRuntime.then.onfulfilled) {
            this.converter.parseRuntime.then.onfulfilled(this.finalResult);
          }
        }
        Iif (this.converter.parseRuntime.subscribe && this.converter.parseRuntime.subscribe.onCompleted) {
          this.converter.parseRuntime.subscribe.onCompleted();
        }
      }
    }

    function processLineByLine(
      lines: ProcessLineResult[],

      conv: Converter,
      offset: number,
      needPushDownstream: boolean,
      cb: (err?) => void,
    ) {
      if (offset >= lines.length) {
        cb();
      } else {
        if (conv.parseRuntime.subscribe && conv.parseRuntime.subscribe.onNext) {
          const hook = conv.parseRuntime.subscribe.onNext;
          const nextLine = lines[offset];
          const res = hook(nextLine, conv.parseRuntime.parsedLineNumber + offset);
          offset++;
          // if (isAsync === undefined) {
          if (res && res.then) {
            res.then(function () {
              processRecursive(lines, hook, conv, offset, needPushDownstream, cb, nextLine);
            }, cb);
          } else {
            // processRecursive(lines, hook, conv, offset, needPushDownstream, cb, nextLine, false);
            if (needPushDownstream){
              pushDownstream(conv,nextLine);
            }
            while (offset<lines.length){
              const line=lines[offset];
              hook(line, conv.parseRuntime.parsedLineNumber + offset);
              offset++;
              if (needPushDownstream){
                pushDownstream(conv,line);
              }
            }
            cb();
          }
          // } else if (isAsync === true) {
          //   (res as PromiseLike<void>).then(function () {
          //     processRecursive(lines, hook, conv, offset, needPushDownstream, cb, nextLine, true);
          //   }, cb);
          // } else if (isAsync === false) {
          //   processRecursive(lines, hook, conv, offset, needPushDownstream, cb, nextLine, false);
          // }
        } else {
          Eif (needPushDownstream) {
            while (offset<lines.length) {
              const line = lines[offset++];
              pushDownstream(conv, line);
            }

          }
          cb();
        }

      }
    }

    function processRecursive(
      lines: ProcessLineResult[],
      hook: (data: any, lineNumber: number) => void | PromiseLike<void>,
      conv: Converter,
      offset: number,
      needPushDownstream: boolean,
      cb: (err?) => void,
      res: ProcessLineResult,
    ) {
      Iif (needPushDownstream) {
        pushDownstream(conv, res);
      }
      processLineByLine(lines, conv, offset, needPushDownstream, cb);
    }
    function pushDownstream(conv: Converter, res: ProcessLineResult) {
      if (typeof res === "object" && !conv.options.objectMode) {
        conv.push(JSON.stringify(res) + "\n", "utf8");
      } else {
        conv.push(res);
      }
    }