distance-iterator.js

/*istanbul ignore start*/"use strict";

exports.__esModule = true;

exports["default"] = /*istanbul ignore end*/function (start, minLine, maxLine) {
  var wantForward = true,
      backwardExhausted = false,
      forwardExhausted = false,
      localOffset = 1;

  return function iterator() {
    if (wantForward && !forwardExhausted) {
      if (backwardExhausted) {
        localOffset++;
      } else {
        wantForward = false;
      }

      // Check if trying to fit beyond text length, and if not, check it fits
      // after offset location (or desired location on first iteration)
      if (start + localOffset <= maxLine) {
        return localOffset;
      }

      forwardExhausted = true;
    }

    if (!backwardExhausted) {
      if (!forwardExhausted) {
        wantForward = true;
      }

      // Check if trying to fit before text beginning, and if not, check it fits
      // before offset location
      if (minLine <= start - localOffset) {
        return -localOffset++;
      }

      backwardExhausted = true;
      return iterator();
    }

    // We tried to fit hunk before text beginning and beyond text length, then
    // hunk can't fit on the text. Return undefined
  };
};
//# sourceMappingURL=data:application/json;charset=utf-8;base64,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