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41 lines
1.1 KiB
41 lines
1.1 KiB
2 years ago
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import { FunctionCov, RangeCov, ScriptCov } from "./types";
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/**
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* Compares two script coverages.
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*
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* The result corresponds to the comparison of their `url` value (alphabetical sort).
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*/
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export function compareScriptCovs(a: Readonly<ScriptCov>, b: Readonly<ScriptCov>): number {
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if (a.url === b.url) {
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return 0;
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} else if (a.url < b.url) {
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return -1;
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} else {
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return 1;
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}
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}
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/**
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* Compares two function coverages.
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*
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* The result corresponds to the comparison of the root ranges.
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*/
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export function compareFunctionCovs(a: Readonly<FunctionCov>, b: Readonly<FunctionCov>): number {
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return compareRangeCovs(a.ranges[0], b.ranges[0]);
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}
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/**
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* Compares two range coverages.
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*
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* The ranges are first ordered by ascending `startOffset` and then by
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* descending `endOffset`.
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* This corresponds to a pre-order tree traversal.
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*/
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export function compareRangeCovs(a: Readonly<RangeCov>, b: Readonly<RangeCov>): number {
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if (a.startOffset !== b.startOffset) {
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return a.startOffset - b.startOffset;
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} else {
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return b.endOffset - a.endOffset;
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}
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}
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