name : distance-iterator.js /*istanbul ignore start*/ "use strict"; Object.defineProperty(exports, "__esModule", { value: true }); exports["default"] = _default; /*istanbul ignore end*/ // Iterator that traverses in the range of [min, max], stepping // by distance from a given start position. I.e. for [0, 4], with // start of 2, this will iterate 2, 3, 1, 4, 0. function /*istanbul ignore start*/ _default /*istanbul ignore end*/ (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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