mirror of
https://github.com/idanoo/GoScrobble.git
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303 lines
36 KiB
JavaScript
303 lines
36 KiB
JavaScript
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"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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const normalize_1 = require("./normalize");
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const range_tree_1 = require("./range-tree");
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/**
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* Merges a list of process coverages.
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*
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* The result is normalized.
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* The input values may be mutated, it is not safe to use them after passing
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* them to this function.
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* The computation is synchronous.
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*
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* @param processCovs Process coverages to merge.
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* @return Merged process coverage.
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*/
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function mergeProcessCovs(processCovs) {
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if (processCovs.length === 0) {
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return { result: [] };
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}
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const urlToScripts = new Map();
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for (const processCov of processCovs) {
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for (const scriptCov of processCov.result) {
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let scriptCovs = urlToScripts.get(scriptCov.url);
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if (scriptCovs === undefined) {
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scriptCovs = [];
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urlToScripts.set(scriptCov.url, scriptCovs);
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}
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scriptCovs.push(scriptCov);
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}
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}
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const result = [];
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for (const scripts of urlToScripts.values()) {
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// assert: `scripts.length > 0`
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result.push(mergeScriptCovs(scripts));
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}
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const merged = { result };
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normalize_1.normalizeProcessCov(merged);
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return merged;
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}
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exports.mergeProcessCovs = mergeProcessCovs;
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/**
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* Merges a list of matching script coverages.
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*
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* Scripts are matching if they have the same `url`.
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* The result is normalized.
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* The input values may be mutated, it is not safe to use them after passing
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* them to this function.
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* The computation is synchronous.
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*
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* @param scriptCovs Process coverages to merge.
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* @return Merged script coverage, or `undefined` if the input list was empty.
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*/
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function mergeScriptCovs(scriptCovs) {
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if (scriptCovs.length === 0) {
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return undefined;
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}
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else if (scriptCovs.length === 1) {
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const merged = scriptCovs[0];
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normalize_1.deepNormalizeScriptCov(merged);
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return merged;
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}
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const first = scriptCovs[0];
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const scriptId = first.scriptId;
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const url = first.url;
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const rangeToFuncs = new Map();
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for (const scriptCov of scriptCovs) {
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for (const funcCov of scriptCov.functions) {
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const rootRange = stringifyFunctionRootRange(funcCov);
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let funcCovs = rangeToFuncs.get(rootRange);
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if (funcCovs === undefined ||
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// if the entry in rangeToFuncs is function-level granularity and
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// the new coverage is block-level, prefer block-level.
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(!funcCovs[0].isBlockCoverage && funcCov.isBlockCoverage)) {
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funcCovs = [];
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rangeToFuncs.set(rootRange, funcCovs);
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}
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else if (funcCovs[0].isBlockCoverage && !funcCov.isBlockCoverage) {
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// if the entry in rangeToFuncs is block-level granularity, we should
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// not append function level granularity.
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continue;
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}
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funcCovs.push(funcCov);
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}
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}
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const functions = [];
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for (const funcCovs of rangeToFuncs.values()) {
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// assert: `funcCovs.length > 0`
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functions.push(mergeFunctionCovs(funcCovs));
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}
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const merged = { scriptId, url, functions };
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normalize_1.normalizeScriptCov(merged);
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return merged;
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}
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exports.mergeScriptCovs = mergeScriptCovs;
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/**
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* Returns a string representation of the root range of the function.
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*
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* This string can be used to match function with same root range.
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* The string is derived from the start and end offsets of the root range of
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* the function.
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* This assumes that `ranges` is non-empty (true for valid function coverages).
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*
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* @param funcCov Function coverage with the range to stringify
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* @internal
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*/
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function stringifyFunctionRootRange(funcCov) {
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const rootRange = funcCov.ranges[0];
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return `${rootRange.startOffset.toString(10)};${rootRange.endOffset.toString(10)}`;
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}
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/**
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* Merges a list of matching function coverages.
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*
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* Functions are matching if their root ranges have the same span.
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* The result is normalized.
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* The input values may be mutated, it is not safe to use them after passing
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* them to this function.
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* The computation is synchronous.
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*
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* @param funcCovs Function coverages to merge.
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* @return Merged function coverage, or `undefined` if the input list was empty.
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*/
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function mergeFunctionCovs(funcCovs) {
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if (funcCovs.length === 0) {
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return undefined;
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}
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else if (funcCovs.length === 1) {
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const merged = funcCovs[0];
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normalize_1.normalizeFunctionCov(merged);
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return merged;
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}
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const functionName = funcCovs[0].functionName;
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const trees = [];
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for (const funcCov of funcCovs) {
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// assert: `fn.ranges.length > 0`
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// assert: `fn.ranges` is sorted
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trees.push(range_tree_1.RangeTree.fromSortedRanges(funcCov.ranges));
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}
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// assert: `trees.length > 0`
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const mergedTree = mergeRangeTrees(trees);
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normalize_1.normalizeRangeTree(mergedTree);
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const ranges = mergedTree.toRanges();
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const isBlockCoverage = !(ranges.length === 1 && ranges[0].count === 0);
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const merged = { functionName, ranges, isBlockCoverage };
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// assert: `merged` is normalized
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return merged;
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}
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exports.mergeFunctionCovs = mergeFunctionCovs;
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/**
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* @precondition Same `start` and `end` for all the trees
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*/
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function mergeRangeTrees(trees) {
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if (trees.length <= 1) {
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return trees[0];
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}
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const first = trees[0];
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let delta = 0;
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for (const tree of trees) {
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delta += tree.delta;
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}
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const children = mergeRangeTreeChildren(trees);
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return new range_tree_1.RangeTree(first.start, first.end, delta, children);
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}
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class RangeTreeWithParent {
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constructor(parentIndex, tree) {
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this.parentIndex = parentIndex;
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this.tree = tree;
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}
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}
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class StartEvent {
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constructor(offset, trees) {
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this.offset = offset;
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this.trees = trees;
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}
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static compare(a, b) {
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return a.offset - b.offset;
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}
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}
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class StartEventQueue {
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constructor(queue) {
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this.queue = queue;
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this.nextIndex = 0;
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this.pendingOffset = 0;
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this.pendingTrees = undefined;
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}
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static fromParentTrees(parentTrees) {
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const startToTrees = new Map();
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for (const [parentIndex, parentTree] of parentTrees.entries()) {
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for (const child of parentTree.children) {
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let trees = startToTrees.get(child.start);
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if (trees === undefined) {
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trees = [];
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startToTrees.set(child.start, trees);
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}
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trees.push(new RangeTreeWithParent(parentIndex, child));
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}
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}
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const queue = [];
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for (const [startOffset, trees] of startToTrees) {
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queue.push(new StartEvent(startOffset, trees));
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}
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queue.sort(StartEvent.compare);
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return new StartEventQueue(queue);
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}
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setPendingOffset(offset) {
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this.pendingOffset = offset;
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}
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pushPendingTree(tree) {
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if (this.pendingTrees === undefined) {
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this.pendingTrees = [];
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}
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this.pendingTrees.push(tree);
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}
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next() {
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const pendingTrees = this.pendingTrees;
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const nextEvent = this.queue[this.nextIndex];
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if (pendingTrees === undefined) {
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this.nextIndex++;
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return nextEvent;
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}
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else if (nextEvent === undefined) {
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this.pendingTrees = undefined;
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return new StartEvent(this.pendingOffset, pendingTrees);
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}
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else {
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if (this.pendingOffset < nextEvent.offset) {
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this.pendingTrees = undefined;
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return new StartEvent(this.pendingOffset, pendingTrees);
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}
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else {
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if (this.pendingOffset === nextEvent.offset) {
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this.pendingTrees = undefined;
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for (const tree of pendingTrees) {
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nextEvent.trees.push(tree);
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}
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}
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this.nextIndex++;
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return nextEvent;
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}
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}
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}
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}
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function mergeRangeTreeChildren(parentTrees) {
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const result = [];
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const startEventQueue = StartEventQueue.fromParentTrees(parentTrees);
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const parentToNested = new Map();
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let openRange;
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while (true) {
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const event = startEventQueue.next();
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if (event === undefined) {
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break;
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}
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if (openRange !== undefined && openRange.end <= event.offset) {
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result.push(nextChild(openRange, parentToNested));
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openRange = undefined;
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}
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if (openRange === undefined) {
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let openRangeEnd = event.offset + 1;
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for (const { parentIndex, tree } of event.trees) {
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openRangeEnd = Math.max(openRangeEnd, tree.end);
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insertChild(parentToNested, parentIndex, tree);
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}
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startEventQueue.setPendingOffset(openRangeEnd);
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openRange = { start: event.offset, end: openRangeEnd };
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}
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else {
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for (const { parentIndex, tree } of event.trees) {
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if (tree.end > openRange.end) {
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const right = tree.split(openRange.end);
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startEventQueue.pushPendingTree(new RangeTreeWithParent(parentIndex, right));
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}
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insertChild(parentToNested, parentIndex, tree);
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}
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}
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}
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if (openRange !== undefined) {
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result.push(nextChild(openRange, parentToNested));
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}
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return result;
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}
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function insertChild(parentToNested, parentIndex, tree) {
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let nested = parentToNested.get(parentIndex);
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if (nested === undefined) {
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nested = [];
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parentToNested.set(parentIndex, nested);
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}
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nested.push(tree);
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}
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function nextChild(openRange, parentToNested) {
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const matchingTrees = [];
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for (const nested of parentToNested.values()) {
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if (nested.length === 1 && nested[0].start === openRange.start && nested[0].end === openRange.end) {
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matchingTrees.push(nested[0]);
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}
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else {
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matchingTrees.push(new range_tree_1.RangeTree(openRange.start, openRange.end, 0, nested));
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}
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}
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parentToNested.clear();
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return mergeRangeTrees(matchingTrees);
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}
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