| // Copyright 2016 The Bazel Authors. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package com.google.testing.coverage; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.TreeMap; |
| import org.jacoco.core.analysis.Analyzer; |
| import org.jacoco.core.analysis.IClassCoverage; |
| import org.jacoco.core.analysis.ICoverageVisitor; |
| import org.jacoco.core.data.ExecutionData; |
| import org.jacoco.core.data.ExecutionDataStore; |
| import org.jacoco.core.internal.InputStreams; |
| import org.jacoco.core.internal.data.CRC64; |
| import org.jacoco.core.internal.flow.ClassProbesAdapter; |
| import org.objectweb.asm.ClassReader; |
| |
| /** |
| * Analyzer that process the branch coverage detail information. |
| * |
| * <p>Reuse the Analyzer class from Jacoco to avoid duplicating the content detection logic. |
| * Override the main {@code Analyzer.analyzeClass} method which does the main work. |
| */ |
| public class BranchDetailAnalyzer extends Analyzer { |
| |
| private final ExecutionDataStore executionData; |
| private final Map<String, BranchCoverageDetail> branchDetails; |
| |
| public BranchDetailAnalyzer(final ExecutionDataStore executionData) { |
| super( |
| executionData, |
| new ICoverageVisitor() { |
| @Override |
| public void visitCoverage(IClassCoverage coverage) {} |
| }); |
| this.executionData = executionData; |
| this.branchDetails = new TreeMap<String, BranchCoverageDetail>(); |
| } |
| |
| // Override all analyzeClass methods. |
| @Override |
| public void analyzeClass(final InputStream input, final String location) throws IOException { |
| final byte[] buffer; |
| try { |
| buffer = InputStreams.readFully(input); |
| } catch (final IOException e) { |
| throw analyzerError(location, e); |
| } |
| analyzeClass(buffer, location); |
| } |
| |
| @Override |
| public void analyzeClass(final byte[] buffer, final String location) throws IOException { |
| try { |
| analyzeClass(buffer); |
| } catch (final RuntimeException cause) { |
| throw analyzerError(location, cause); |
| } |
| } |
| |
| @Override |
| public void analyzeClass(final ClassReader reader) { |
| final Map<Integer, BranchExp> lineToBranchExp = mapProbes(reader); |
| |
| long classid = CRC64.classId(reader.b); |
| ExecutionData classData = executionData.get(classid); |
| if (classData == null) { |
| return; |
| } |
| boolean[] probes = classData.getProbes(); |
| |
| BranchCoverageDetail detail = new BranchCoverageDetail(); |
| |
| for (Map.Entry<Integer, BranchExp> entry : lineToBranchExp.entrySet()) { |
| int line = entry.getKey(); |
| BranchExp branchExp = entry.getValue(); |
| List<CovExp> branches = branchExp.getBranches(); |
| |
| detail.setBranches(line, branches.size()); |
| for (int branchIdx = 0; branchIdx < branches.size(); branchIdx++) { |
| if (branches.get(branchIdx).eval(probes)) { |
| detail.setTakenBit(line, branchIdx); |
| } |
| } |
| } |
| if (detail.linesWithBranches().size() > 0) { |
| branchDetails.put(reader.getClassName(), detail); |
| } |
| } |
| |
| private void analyzeClass(final byte[] source) { |
| final ClassReader reader = new ClassReader(source); |
| analyzeClass(reader); |
| } |
| |
| private IOException analyzerError(final String location, final Exception cause) { |
| final IOException ex = new IOException(String.format("Error while analyzing %s.", location)); |
| ex.initCause(cause); |
| return ex; |
| } |
| |
| // Generate the line to probeExp map so that we can evaluate the coverage. |
| private Map<Integer, BranchExp> mapProbes(final ClassReader reader) { |
| final ClassProbesMapper mapper = new ClassProbesMapper(); |
| final ClassProbesAdapter adapter = new ClassProbesAdapter(mapper, false); |
| reader.accept(adapter, 0); |
| |
| return mapper.result(); |
| } |
| |
| public Map<String, BranchCoverageDetail> getBranchDetails() { |
| return branchDetails; |
| } |
| } |