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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 debug = require('debug')('istanbuljs');
const libCoverage = require('istanbul-lib-coverage');
const { MappedCoverage } = require('./mapped');
const getMapping = require('./get-mapping');
const { getUniqueKey, getOutput } = require('./transform-utils');
class SourceMapTransformer {
constructor(finder, opts = {}) {
this.finder = finder;
this.baseDir = opts.baseDir || process.cwd();
}
processFile(fc, sourceMap, coverageMapper) {
let changes = 0;
Object.keys(fc.statementMap).forEach(s => {
const loc = fc.statementMap[s];
const hits = fc.s[s];
const mapping = getMapping(sourceMap, loc, fc.path);
if (mapping) {
changes += 1;
const mappedCoverage = coverageMapper(mapping.source);
mappedCoverage.addStatement(mapping.loc, hits);
}
});
Object.keys(fc.fnMap).forEach(f => {
const fnMeta = fc.fnMap[f];
const hits = fc.f[f];
const mapping = getMapping(sourceMap, fnMeta.decl, fc.path);
const spanMapping = getMapping(sourceMap, fnMeta.loc, fc.path);
if (
mapping &&
spanMapping &&
mapping.source === spanMapping.source
) {
changes += 1;
const mappedCoverage = coverageMapper(mapping.source);
mappedCoverage.addFunction(
fnMeta.name,
mapping.loc,
spanMapping.loc,
hits
);
}
});
Object.keys(fc.branchMap).forEach(b => {
const branchMeta = fc.branchMap[b];
const hits = fc.b[b];
const locs = [];
const mappedHits = [];
let source;
let skip;
branchMeta.locations.forEach((loc, i) => {
const mapping = getMapping(sourceMap, loc, fc.path);
if (mapping) {
if (!source) {
source = mapping.source;
}
if (mapping.source !== source) {
skip = true;
}
locs.push(mapping.loc);
mappedHits.push(hits[i]);
}
});
if (!skip && locs.length > 0) {
changes += 1;
const mappedCoverage = coverageMapper(source);
mappedCoverage.addBranch(
branchMeta.type,
locs[0] /* XXX */,
locs,
mappedHits
);
}
});
return changes > 0;
}
transform(coverageMap) {
const uniqueFiles = {};
const getMappedCoverage = file => {
const key = getUniqueKey(file);
if (!uniqueFiles[key]) {
uniqueFiles[key] = {
file,
mappedCoverage: new MappedCoverage(file)
};
}
return uniqueFiles[key].mappedCoverage;
};
coverageMap.files().forEach(file => {
const fc = coverageMap.fileCoverageFor(file);
const sourceMap = this.finder(file);
if (!sourceMap) {
uniqueFiles[getUniqueKey(file)] = {
file,
mappedCoverage: fc
};
return;
}
const changed = this.processFile(fc, sourceMap, getMappedCoverage);
if (!changed) {
debug(`File [${file}] ignored, nothing could be mapped`);
}
});
return libCoverage.createCoverageMap(getOutput(uniqueFiles));
}
}
module.exports = {
create(finder, opts) {
return new SourceMapTransformer(finder, opts);
}
};