mapped.js
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/*
Copyright 2015, Yahoo Inc.
Copyrights licensed under the New BSD License. See the accompanying LICENSE file for terms.
*/
'use strict';
const { FileCoverage } = require('istanbul-lib-coverage').classes;
function locString(loc) {
return [
loc.start.line,
loc.start.column,
loc.end.line,
loc.end.column
].join(':');
}
class MappedCoverage extends FileCoverage {
constructor(pathOrObj) {
super(pathOrObj);
this.meta = {
last: {
s: 0,
f: 0,
b: 0
},
seen: {}
};
}
addStatement(loc, hits) {
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, decl, loc, hits) {
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)
};
}
this.f[index] = this.f[index] || 0;
this.f[index] += hits;
return index;
}
addBranch(type, loc, branchLocations, hits) {
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))
};
}
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) {
return {
start: {
line: loc.start.line,
column: loc.start.column
},
end: {
line: loc.end.line,
column: loc.end.column
}
};
}
}
module.exports = {
MappedCoverage
};