.config/coc/extensions/node_modules/coc-prettier/node_modules/diff/lib/util/distance-iterator.js

   1 /*istanbul ignore start*/
   2 "use strict";
   3
   4 Object.defineProperty(exports, "__esModule", {
   5   value: true
   6 });
   7 exports.default = _default;
   8
   9 /*istanbul ignore end*/
  10 // Iterator that traverses in the range of [min, max], stepping
  11 // by distance from a given start position. I.e. for [0, 4], with
  12 // start of 2, this will iterate 2, 3, 1, 4, 0.
  13 function
  14 /*istanbul ignore start*/
  15 _default
  16 /*istanbul ignore end*/
  17 (start, minLine, maxLine) {
  18   var wantForward = true,
  19       backwardExhausted = false,
  20       forwardExhausted = false,
  21       localOffset = 1;
  22   return function iterator() {
  23     if (wantForward && !forwardExhausted) {
  24       if (backwardExhausted) {
  25         localOffset++;
  26       } else {
  27         wantForward = false;
  28       } // Check if trying to fit beyond text length, and if not, check it fits
  29       // after offset location (or desired location on first iteration)
  30
  31
  32       if (start + localOffset <= maxLine) {
  33         return localOffset;
  34       }
  35
  36       forwardExhausted = true;
  37     }
  38
  39     if (!backwardExhausted) {
  40       if (!forwardExhausted) {
  41         wantForward = true;
  42       } // Check if trying to fit before text beginning, and if not, check it fits
  43       // before offset location
  44
  45
  46       if (minLine <= start - localOffset) {
  47         return -localOffset++;
  48       }
  49
  50       backwardExhausted = true;
  51       return iterator();
  52     } // We tried to fit hunk before text beginning and beyond text length, then
  53     // hunk can't fit on the text. Return undefined
  54
  55   };
  56 }
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