Press n or j to go to the next uncovered block, b, p or k for the previous block.
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Copyright 2015, Yahoo Inc.
Copyrights licensed under the New BSD License. See the accompanying LICENSE file for terms.
*/
import { classes } from "@vitest/istanbul-lib-coverage";
import type {
BranchMapping,
FileCoverage,
FileCoverageData,
FunctionMapping,
Range,
} from "@vitest/istanbul-lib-coverage";
const { FileCoverage: FileCoverageCls } = classes;
/** bookkeeping metadata used to resolve duplicate mappings */
interface MappedCoverageMeta {
last: {
s: number;
f: number;
b: number;
};
seen: Record<string, number>;
}
function locString(loc: Range): string {
return [loc.start.line, loc.start.column, loc.end.line, loc.end.column].join(":");
}
export class MappedCoverage extends FileCoverageCls {
meta: MappedCoverageMeta;
constructor(pathOrObj: string | FileCoverage | FileCoverageData) {
super(pathOrObj);
this.meta = {
last: {
s: 0,
f: 0,
b: 0,
},
seen: {},
};
}
addStatement(loc: Range, hits: number): number {
const key = "s:" + locString(loc);
const { meta } = this;
let index = meta.seen[key];
if (index === undefined) {
index = meta.last.s;
meta.last.s += 1;
meta.seen[key] = index;
this.statementMap[index] = this.cloneLocation(loc);
}
this.s[index] = this.s[index] || 0;
this.s[index] += hits;
return index;
}
addFunction(name: string | undefined, decl: Range, loc: Range, hits: number): number {
const key = "f:" + locString(decl);
const { meta } = this;
let index = meta.seen[key];
if (index === undefined) {
index = meta.last.f;
meta.last.f += 1;
meta.seen[key] = index;
name = name || `(unknown_${index})`;
this.fnMap[index] = {
name,
decl: this.cloneLocation(decl),
loc: this.cloneLocation(loc),
} as FunctionMapping;
}
this.f[index] = this.f[index] || 0;
this.f[index] += hits;
return index;
}
addBranch(type: string, loc: Range, branchLocations: Range[], hits: number[]): number {
const key = ["b", ...branchLocations.map((l) => locString(l))].join(":");
const { meta } = this;
let index = meta.seen[key];
if (index === undefined) {
index = meta.last.b;
meta.last.b += 1;
meta.seen[key] = index;
this.branchMap[index] = {
loc,
type,
locations: branchLocations.map((l) => this.cloneLocation(l)),
} as BranchMapping;
}
if (!this.b[index]) {
this.b[index] = branchLocations.map(() => 0);
}
hits.forEach((hit, i) => {
this.b[index][i] += hit;
});
return index;
}
/* Returns a clone of the location object with only the attributes of interest */
cloneLocation(loc: Range): Range {
return {
start: {
line: loc.start.line,
column: loc.start.column,
},
end: {
line: loc.end.line,
column: loc.end.column,
},
};
}
}
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