range-tree.js 16 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139
  1. "use strict";
  2. Object.defineProperty(exports, "__esModule", { value: true });
  3. class RangeTree {
  4. constructor(start, end, delta, children) {
  5. this.start = start;
  6. this.end = end;
  7. this.delta = delta;
  8. this.children = children;
  9. }
  10. /**
  11. * @precodition `ranges` are well-formed and pre-order sorted
  12. */
  13. static fromSortedRanges(ranges) {
  14. let root;
  15. // Stack of parent trees and parent counts.
  16. const stack = [];
  17. for (const range of ranges) {
  18. const node = new RangeTree(range.startOffset, range.endOffset, range.count, []);
  19. if (root === undefined) {
  20. root = node;
  21. stack.push([node, range.count]);
  22. continue;
  23. }
  24. let parent;
  25. let parentCount;
  26. while (true) {
  27. [parent, parentCount] = stack[stack.length - 1];
  28. // assert: `top !== undefined` (the ranges are sorted)
  29. if (range.startOffset < parent.end) {
  30. break;
  31. }
  32. else {
  33. stack.pop();
  34. }
  35. }
  36. node.delta -= parentCount;
  37. parent.children.push(node);
  38. stack.push([node, range.count]);
  39. }
  40. return root;
  41. }
  42. normalize() {
  43. const children = [];
  44. let curEnd;
  45. let head;
  46. const tail = [];
  47. for (const child of this.children) {
  48. if (head === undefined) {
  49. head = child;
  50. }
  51. else if (child.delta === head.delta && child.start === curEnd) {
  52. tail.push(child);
  53. }
  54. else {
  55. endChain();
  56. head = child;
  57. }
  58. curEnd = child.end;
  59. }
  60. if (head !== undefined) {
  61. endChain();
  62. }
  63. if (children.length === 1) {
  64. const child = children[0];
  65. if (child.start === this.start && child.end === this.end) {
  66. this.delta += child.delta;
  67. this.children = child.children;
  68. // `.lazyCount` is zero for both (both are after normalization)
  69. return;
  70. }
  71. }
  72. this.children = children;
  73. function endChain() {
  74. if (tail.length !== 0) {
  75. head.end = tail[tail.length - 1].end;
  76. for (const tailTree of tail) {
  77. for (const subChild of tailTree.children) {
  78. subChild.delta += tailTree.delta - head.delta;
  79. head.children.push(subChild);
  80. }
  81. }
  82. tail.length = 0;
  83. }
  84. head.normalize();
  85. children.push(head);
  86. }
  87. }
  88. /**
  89. * @precondition `tree.start < value && value < tree.end`
  90. * @return RangeTree Right part
  91. */
  92. split(value) {
  93. let leftChildLen = this.children.length;
  94. let mid;
  95. // TODO(perf): Binary search (check overhead)
  96. for (let i = 0; i < this.children.length; i++) {
  97. const child = this.children[i];
  98. if (child.start < value && value < child.end) {
  99. mid = child.split(value);
  100. leftChildLen = i + 1;
  101. break;
  102. }
  103. else if (child.start >= value) {
  104. leftChildLen = i;
  105. break;
  106. }
  107. }
  108. const rightLen = this.children.length - leftChildLen;
  109. const rightChildren = this.children.splice(leftChildLen, rightLen);
  110. if (mid !== undefined) {
  111. rightChildren.unshift(mid);
  112. }
  113. const result = new RangeTree(value, this.end, this.delta, rightChildren);
  114. this.end = value;
  115. return result;
  116. }
  117. /**
  118. * Get the range coverages corresponding to the tree.
  119. *
  120. * The ranges are pre-order sorted.
  121. */
  122. toRanges() {
  123. const ranges = [];
  124. // Stack of parent trees and counts.
  125. const stack = [[this, 0]];
  126. while (stack.length > 0) {
  127. const [cur, parentCount] = stack.pop();
  128. const count = parentCount + cur.delta;
  129. ranges.push({ startOffset: cur.start, endOffset: cur.end, count });
  130. for (let i = cur.children.length - 1; i >= 0; i--) {
  131. stack.push([cur.children[i], count]);
  132. }
  133. }
  134. return ranges;
  135. }
  136. }
  137. exports.RangeTree = RangeTree;
  138. //# sourceMappingURL=data:application/json;charset=utf8;base64,{"version":3,"sources":["_src/range-tree.ts"],"names":[],"mappings":";;AAEA,MAAa,SAAS;IAMpB,YACE,KAAa,EACb,GAAW,EACX,KAAa,EACb,QAAqB;QAErB,IAAI,CAAC,KAAK,GAAG,KAAK,CAAC;QACnB,IAAI,CAAC,GAAG,GAAG,GAAG,CAAC;QACf,IAAI,CAAC,KAAK,GAAG,KAAK,CAAC;QACnB,IAAI,CAAC,QAAQ,GAAG,QAAQ,CAAC;IAC3B,CAAC;IAED;;OAEG;IACH,MAAM,CAAC,gBAAgB,CAAC,MAA+B;QACrD,IAAI,IAA2B,CAAC;QAChC,2CAA2C;QAC3C,MAAM,KAAK,GAA0B,EAAE,CAAC;QACxC,KAAK,MAAM,KAAK,IAAI,MAAM,EAAE;YAC1B,MAAM,IAAI,GAAc,IAAI,SAAS,CAAC,KAAK,CAAC,WAAW,EAAE,KAAK,CAAC,SAAS,EAAE,KAAK,CAAC,KAAK,EAAE,EAAE,CAAC,CAAC;YAC3F,IAAI,IAAI,KAAK,SAAS,EAAE;gBACtB,IAAI,GAAG,IAAI,CAAC;gBACZ,KAAK,CAAC,IAAI,CAAC,CAAC,IAAI,EAAE,KAAK,CAAC,KAAK,CAAC,CAAC,CAAC;gBAChC,SAAS;aACV;YACD,IAAI,MAAiB,CAAC;YACtB,IAAI,WAAmB,CAAC;YACxB,OAAO,IAAI,EAAE;gBACX,CAAC,MAAM,EAAE,WAAW,CAAC,GAAG,KAAK,CAAC,KAAK,CAAC,MAAM,GAAG,CAAC,CAAC,CAAC;gBAChD,sDAAsD;gBACtD,IAAI,KAAK,CAAC,WAAW,GAAG,MAAM,CAAC,GAAG,EAAE;oBAClC,MAAM;iBACP;qBAAM;oBACL,KAAK,CAAC,GAAG,EAAE,CAAC;iBACb;aACF;YACD,IAAI,CAAC,KAAK,IAAI,WAAW,CAAC;YAC1B,MAAM,CAAC,QAAQ,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC;YAC3B,KAAK,CAAC,IAAI,CAAC,CAAC,IAAI,EAAE,KAAK,CAAC,KAAK,CAAC,CAAC,CAAC;SACjC;QACD,OAAO,IAAI,CAAC;IACd,CAAC;IAED,SAAS;QACP,MAAM,QAAQ,GAAgB,EAAE,CAAC;QACjC,IAAI,MAAc,CAAC;QACnB,IAAI,IAA2B,CAAC;QAChC,MAAM,IAAI,GAAgB,EAAE,CAAC;QAC7B,KAAK,MAAM,KAAK,IAAI,IAAI,CAAC,QAAQ,EAAE;YACjC,IAAI,IAAI,KAAK,SAAS,EAAE;gBACtB,IAAI,GAAG,KAAK,CAAC;aACd;iBAAM,IAAI,KAAK,CAAC,KAAK,KAAK,IAAI,CAAC,KAAK,IAAI,KAAK,CAAC,KAAK,KAAK,MAAO,EAAE;gBAChE,IAAI,CAAC,IAAI,CAAC,KAAK,CAAC,CAAC;aAClB;iBAAM;gBACL,QAAQ,EAAE,CAAC;gBACX,IAAI,GAAG,KAAK,CAAC;aACd;YACD,MAAM,GAAG,KAAK,CAAC,GAAG,CAAC;SACpB;QACD,IAAI,IAAI,KAAK,SAAS,EAAE;YACtB,QAAQ,EAAE,CAAC;SACZ;QAED,IAAI,QAAQ,CAAC,MAAM,KAAK,CAAC,EAAE;YACzB,MAAM,KAAK,GAAc,QAAQ,CAAC,CAAC,CAAC,CAAC;YACrC,IAAI,KAAK,CAAC,KAAK,KAAK,IAAI,CAAC,KAAK,IAAI,KAAK,CAAC,GAAG,KAAK,IAAI,CAAC,GAAG,EAAE;gBACxD,IAAI,CAAC,KAAK,IAAI,KAAK,CAAC,KAAK,CAAC;gBAC1B,IAAI,CAAC,QAAQ,GAAG,KAAK,CAAC,QAAQ,CAAC;gBAC/B,+DAA+D;gBAC/D,OAAO;aACR;SACF;QAED,IAAI,CAAC,QAAQ,GAAG,QAAQ,CAAC;QAEzB,SAAS,QAAQ;YACf,IAAI,IAAI,CAAC,MAAM,KAAK,CAAC,EAAE;gBACrB,IAAK,CAAC,GAAG,GAAG,IAAI,CAAC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC,CAAC,GAAG,CAAC;gBACtC,KAAK,MAAM,QAAQ,IAAI,IAAI,EAAE;oBAC3B,KAAK,MAAM,QAAQ,IAAI,QAAQ,CAAC,QAAQ,EAAE;wBACxC,QAAQ,CAAC,KAAK,IAAI,QAAQ,CAAC,KAAK,GAAG,IAAK,CAAC,KAAK,CAAC;wBAC/C,IAAK,CAAC,QAAQ,CAAC,IAAI,CAAC,QAAQ,CAAC,CAAC;qBAC/B;iBACF;gBACD,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;aACjB;YACD,IAAK,CAAC,SAAS,EAAE,CAAC;YAClB,QAAQ,CAAC,IAAI,CAAC,IAAK,CAAC,CAAC;QACvB,CAAC;IACH,CAAC;IAED;;;OAGG;IACH,KAAK,CAAC,KAAa;QACjB,IAAI,YAAY,GAAW,IAAI,CAAC,QAAQ,CAAC,MAAM,CAAC;QAChD,IAAI,GAA0B,CAAC;QAE/B,6CAA6C;QAC7C,KAAK,IAAI,CAAC,GAAW,CAAC,EAAE,CAAC,GAAG,IAAI,CAAC,QAAQ,CAAC,MAAM,EAAE,CAAC,EAAE,EAAE;YACrD,MAAM,KAAK,GAAc,IAAI,CAAC,QAAQ,CAAC,CAAC,CAAC,CAAC;YAC1C,IAAI,KAAK,CAAC,KAAK,GAAG,KAAK,IAAI,KAAK,GAAG,KAAK,CAAC,GAAG,EAAE;gBAC5C,GAAG,GAAG,KAAK,CAAC,KAAK,CAAC,KAAK,CAAC,CAAC;gBACzB,YAAY,GAAG,CAAC,GAAG,CAAC,CAAC;gBACrB,MAAM;aACP;iBAAM,IAAI,KAAK,CAAC,KAAK,IAAI,KAAK,EAAE;gBAC/B,YAAY,GAAG,CAAC,CAAC;gBACjB,MAAM;aACP;SACF;QAED,MAAM,QAAQ,GAAW,IAAI,CAAC,QAAQ,CAAC,MAAM,GAAG,YAAY,CAAC;QAC7D,MAAM,aAAa,GAAgB,IAAI,CAAC,QAAQ,CAAC,MAAM,CAAC,YAAY,EAAE,QAAQ,CAAC,CAAC;QAChF,IAAI,GAAG,KAAK,SAAS,EAAE;YACrB,aAAa,CAAC,OAAO,CAAC,GAAG,CAAC,CAAC;SAC5B;QACD,MAAM,MAAM,GAAc,IAAI,SAAS,CACrC,KAAK,EACL,IAAI,CAAC,GAAG,EACR,IAAI,CAAC,KAAK,EACV,aAAa,CACd,CAAC;QACF,IAAI,CAAC,GAAG,GAAG,KAAK,CAAC;QACjB,OAAO,MAAM,CAAC;IAChB,CAAC;IAED;;;;OAIG;IACH,QAAQ;QACN,MAAM,MAAM,GAAe,EAAE,CAAC;QAC9B,oCAAoC;QACpC,MAAM,KAAK,GAA0B,CAAC,CAAC,IAAI,EAAE,CAAC,CAAC,CAAC,CAAC;QACjD,OAAO,KAAK,CAAC,MAAM,GAAG,CAAC,EAAE;YACvB,MAAM,CAAC,GAAG,EAAE,WAAW,CAAC,GAAwB,KAAK,CAAC,GAAG,EAAG,CAAC;YAC7D,MAAM,KAAK,GAAW,WAAW,GAAG,GAAG,CAAC,KAAK,CAAC;YAC9C,MAAM,CAAC,IAAI,CAAC,EAAC,WAAW,EAAE,GAAG,CAAC,KAAK,EAAE,SAAS,EAAE,GAAG,CAAC,GAAG,EAAE,KAAK,EAAC,CAAC,CAAC;YACjE,KAAK,IAAI,CAAC,GAAW,GAAG,CAAC,QAAQ,CAAC,MAAM,GAAG,CAAC,EAAE,CAAC,IAAI,CAAC,EAAE,CAAC,EAAE,EAAE;gBACzD,KAAK,CAAC,IAAI,CAAC,CAAC,GAAG,CAAC,QAAQ,CAAC,CAAC,CAAC,EAAE,KAAK,CAAC,CAAC,CAAC;aACtC;SACF;QACD,OAAO,MAAM,CAAC;IAChB,CAAC;CACF;AAzJD,8BAyJC","file":"range-tree.js","sourcesContent":["import { RangeCov } from \"./types\";\n\nexport class RangeTree {\n  start: number;\n  end: number;\n  delta: number;\n  children: RangeTree[];\n\n  constructor(\n    start: number,\n    end: number,\n    delta: number,\n    children: RangeTree[],\n  ) {\n    this.start = start;\n    this.end = end;\n    this.delta = delta;\n    this.children = children;\n  }\n\n  /**\n   * @precodition `ranges` are well-formed and pre-order sorted\n   */\n  static fromSortedRanges(ranges: ReadonlyArray<RangeCov>): RangeTree | undefined {\n    let root: RangeTree | undefined;\n    // Stack of parent trees and parent counts.\n    const stack: [RangeTree, number][] = [];\n    for (const range of ranges) {\n      const node: RangeTree = new RangeTree(range.startOffset, range.endOffset, range.count, []);\n      if (root === undefined) {\n        root = node;\n        stack.push([node, range.count]);\n        continue;\n      }\n      let parent: RangeTree;\n      let parentCount: number;\n      while (true) {\n        [parent, parentCount] = stack[stack.length - 1];\n        // assert: `top !== undefined` (the ranges are sorted)\n        if (range.startOffset < parent.end) {\n          break;\n        } else {\n          stack.pop();\n        }\n      }\n      node.delta -= parentCount;\n      parent.children.push(node);\n      stack.push([node, range.count]);\n    }\n    return root;\n  }\n\n  normalize(): void {\n    const children: RangeTree[] = [];\n    let curEnd: number;\n    let head: RangeTree | undefined;\n    const tail: RangeTree[] = [];\n    for (const child of this.children) {\n      if (head === undefined) {\n        head = child;\n      } else if (child.delta === head.delta && child.start === curEnd!) {\n        tail.push(child);\n      } else {\n        endChain();\n        head = child;\n      }\n      curEnd = child.end;\n    }\n    if (head !== undefined) {\n      endChain();\n    }\n\n    if (children.length === 1) {\n      const child: RangeTree = children[0];\n      if (child.start === this.start && child.end === this.end) {\n        this.delta += child.delta;\n        this.children = child.children;\n        // `.lazyCount` is zero for both (both are after normalization)\n        return;\n      }\n    }\n\n    this.children = children;\n\n    function endChain(): void {\n      if (tail.length !== 0) {\n        head!.end = tail[tail.length - 1].end;\n        for (const tailTree of tail) {\n          for (const subChild of tailTree.children) {\n            subChild.delta += tailTree.delta - head!.delta;\n            head!.children.push(subChild);\n          }\n        }\n        tail.length = 0;\n      }\n      head!.normalize();\n      children.push(head!);\n    }\n  }\n\n  /**\n   * @precondition `tree.start < value && value < tree.end`\n   * @return RangeTree Right part\n   */\n  split(value: number): RangeTree {\n    let leftChildLen: number = this.children.length;\n    let mid: RangeTree | undefined;\n\n    // TODO(perf): Binary search (check overhead)\n    for (let i: number = 0; i < this.children.length; i++) {\n      const child: RangeTree = this.children[i];\n      if (child.start < value && value < child.end) {\n        mid = child.split(value);\n        leftChildLen = i + 1;\n        break;\n      } else if (child.start >= value) {\n        leftChildLen = i;\n        break;\n      }\n    }\n\n    const rightLen: number = this.children.length - leftChildLen;\n    const rightChildren: RangeTree[] = this.children.splice(leftChildLen, rightLen);\n    if (mid !== undefined) {\n      rightChildren.unshift(mid);\n    }\n    const result: RangeTree = new RangeTree(\n      value,\n      this.end,\n      this.delta,\n      rightChildren,\n    );\n    this.end = value;\n    return result;\n  }\n\n  /**\n   * Get the range coverages corresponding to the tree.\n   *\n   * The ranges are pre-order sorted.\n   */\n  toRanges(): RangeCov[] {\n    const ranges: RangeCov[] = [];\n    // Stack of parent trees and counts.\n    const stack: [RangeTree, number][] = [[this, 0]];\n    while (stack.length > 0) {\n      const [cur, parentCount]: [RangeTree, number] = stack.pop()!;\n      const count: number = parentCount + cur.delta;\n      ranges.push({startOffset: cur.start, endOffset: cur.end, count});\n      for (let i: number = cur.children.length - 1; i >= 0; i--) {\n        stack.push([cur.children[i], count]);\n      }\n    }\n    return ranges;\n  }\n}\n"],"sourceRoot":""}