Method allMatches

src/vimscript/pattern.ts:71–179

* Every range in the document that matches the search string. * * This might not be 100% complete - @see Pattern::MAX_SEARCH_RANGES

(
    vimState: VimState,
    args:
      | {
          fromPosition: Position;
        }
      | {
          lineRange: LineRange;
        },
  )

   * This might not be 100% complete - @see Pattern::MAX_SEARCH_RANGES
   */
  public allMatches(
    vimState: VimState,
    args:
      | {
          fromPosition: Position;
        }
      | {
          lineRange: LineRange;
        },
  ): PatternMatch[] {
    if (this.emptyBranch) {
      // HACK: This pattern matches each character, but for purposes of perf when highlighting, merge them.
      return [
        {
          range: TextEditor.getDocumentRange(vimState.document),
          groups: [],
        },
      ];
    }

    let fromPosition: Position;
    let lineRange:
      | {
          start: number;
          end: number;
        }
      | undefined;
    if ('lineRange' in args) {
      // TODO: We should be able to get away with only getting part of the document text in this case
      lineRange = args.lineRange.resolve(vimState);
      fromPosition = new Position(lineRange.start, 0);
    } else {
      fromPosition = args.fromPosition;
    }

    let haystack: string;
    let searchOffset: number;
    let startOffset: number;
    if (this.inSelection && vimState.lastVisualSelection) {
      // TODO: This is not exactly how Vim implements in-selection search (\%V), see :help \%V for more info.
      const searchRange = new Range(
        vimState.lastVisualSelection.start,
        vimState.lastVisualSelection.end,
      );
      haystack = vimState.document.getText(searchRange);
      searchOffset = vimState.document.offsetAt(vimState.lastVisualSelection.start);
      startOffset = searchRange.contains(fromPosition)
        ? vimState.document.offsetAt(fromPosition) - searchOffset
        : 0;
    } else {
      haystack = vimState.document.getText();
      searchOffset = 0;
      startOffset = vimState.document.offsetAt(fromPosition) - searchOffset;
    }

    this.regex.lastIndex = startOffset;

    const start = Date.now();