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135 lines
4 KiB
JavaScript
135 lines
4 KiB
JavaScript
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/*
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Copyright 2015, Yahoo Inc.
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Copyrights licensed under the New BSD License. See the accompanying LICENSE file for terms.
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*/
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'use strict';
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const debug = require('debug')('istanbuljs');
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const libCoverage = require('istanbul-lib-coverage');
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const { MappedCoverage } = require('./mapped');
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const getMapping = require('./get-mapping');
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const { getUniqueKey, getOutput } = require('./transform-utils');
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class SourceMapTransformer {
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constructor(finder, opts = {}) {
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this.finder = finder;
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this.baseDir = opts.baseDir || process.cwd();
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}
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processFile(fc, sourceMap, coverageMapper) {
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let changes = 0;
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Object.keys(fc.statementMap).forEach(s => {
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const loc = fc.statementMap[s];
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const hits = fc.s[s];
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const mapping = getMapping(sourceMap, loc, fc.path);
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if (mapping) {
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changes += 1;
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const mappedCoverage = coverageMapper(mapping.source);
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mappedCoverage.addStatement(mapping.loc, hits);
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}
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});
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Object.keys(fc.fnMap).forEach(f => {
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const fnMeta = fc.fnMap[f];
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const hits = fc.f[f];
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const mapping = getMapping(sourceMap, fnMeta.decl, fc.path);
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const spanMapping = getMapping(sourceMap, fnMeta.loc, fc.path);
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if (
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mapping &&
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spanMapping &&
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mapping.source === spanMapping.source
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) {
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changes += 1;
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const mappedCoverage = coverageMapper(mapping.source);
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mappedCoverage.addFunction(
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fnMeta.name,
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mapping.loc,
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spanMapping.loc,
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hits
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);
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}
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});
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Object.keys(fc.branchMap).forEach(b => {
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const branchMeta = fc.branchMap[b];
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const hits = fc.b[b];
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const locs = [];
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const mappedHits = [];
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let source;
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let skip;
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branchMeta.locations.forEach((loc, i) => {
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const mapping = getMapping(sourceMap, loc, fc.path);
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if (mapping) {
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if (!source) {
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source = mapping.source;
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}
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if (mapping.source !== source) {
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skip = true;
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}
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locs.push(mapping.loc);
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mappedHits.push(hits[i]);
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}
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});
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if (!skip && locs.length > 0) {
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changes += 1;
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const mappedCoverage = coverageMapper(source);
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mappedCoverage.addBranch(
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branchMeta.type,
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locs[0] /* XXX */,
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locs,
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mappedHits
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);
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}
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});
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return changes > 0;
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}
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transform(coverageMap) {
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const uniqueFiles = {};
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const getMappedCoverage = file => {
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const key = getUniqueKey(file);
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if (!uniqueFiles[key]) {
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uniqueFiles[key] = {
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file,
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mappedCoverage: new MappedCoverage(file)
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};
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}
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return uniqueFiles[key].mappedCoverage;
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};
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coverageMap.files().forEach(file => {
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const fc = coverageMap.fileCoverageFor(file);
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const sourceMap = this.finder(file);
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if (!sourceMap) {
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uniqueFiles[getUniqueKey(file)] = {
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file,
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mappedCoverage: fc
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};
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return;
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}
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const changed = this.processFile(fc, sourceMap, getMappedCoverage);
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if (!changed) {
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debug(`File [${file}] ignored, nothing could be mapped`);
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}
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});
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return libCoverage.createCoverageMap(getOutput(uniqueFiles));
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}
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}
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module.exports = {
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create(finder, opts) {
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return new SourceMapTransformer(finder, opts);
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}
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};
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