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// Copyright 2018 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.devtools.coverageoutputgenerator;
import static com.google.devtools.coverageoutputgenerator.Constants.CC_EXTENSIONS;
import static java.util.Arrays.asList;
import com.google.common.base.Preconditions;
import com.google.common.collect.ImmutableMap;
import java.util.Collection;
import java.util.List;
import java.util.Set;
import java.util.TreeMap;
class Coverage {
private final TreeMap<String, SourceFileCoverage> sourceFiles;
Coverage() {
sourceFiles = new TreeMap<>();
}
void add(SourceFileCoverage input) {
String sourceFilename = input.sourceFileName();
if (sourceFiles.containsKey(sourceFilename)) {
SourceFileCoverage old = sourceFiles.get(sourceFilename);
sourceFiles.put(sourceFilename, SourceFileCoverage.merge(old, input));
} else {
sourceFiles.put(sourceFilename, input);
}
}
static Coverage merge(Coverage... coverages) {
return merge(asList(coverages));
}
static Coverage merge(List<Coverage> coverages) {
Coverage merged = new Coverage();
for (Coverage c : coverages) {
for (SourceFileCoverage sourceFile : c.getAllSourceFiles()) {
merged.add(sourceFile);
}
}
return merged;
}
static Coverage create(SourceFileCoverage... sourceFilesCoverage) {
return create(asList(sourceFilesCoverage));
}
static Coverage create(List<SourceFileCoverage> sourceFilesCoverage) {
Coverage coverage = new Coverage();
for (SourceFileCoverage sourceFileCoverage : sourceFilesCoverage) {
coverage.add(sourceFileCoverage);
}
return coverage;
}
/**
* Returns {@link Coverage} only for the given CC source filenames, filtering out every other CC
* sources of the given coverage. Other types of source files (e.g. Java) will not be filtered
* out.
*
* @param coverage The initial coverage.
* @param sourcesToKeep The filenames of the sources to keep from the initial coverage.
*/
static Coverage getOnlyTheseCcSources(Coverage coverage, Set<String> sourcesToKeep) {
if (coverage == null || sourcesToKeep == null) {
throw new IllegalArgumentException("Coverage and sourcesToKeep should not be null.");
}
if (coverage.isEmpty()) {
return coverage;
}
if (sourcesToKeep.isEmpty()) {
return new Coverage();
}
Coverage finalCoverage = new Coverage();
for (SourceFileCoverage source : coverage.getAllSourceFiles()) {
if (!isCcSourceFile(source.sourceFileName())
|| sourcesToKeep.contains(source.sourceFileName())) {
finalCoverage.add(source);
}
}
return finalCoverage;
}
private static boolean isCcSourceFile(String filename) {
for (String ccExtension : CC_EXTENSIONS) {
if (filename.endsWith(ccExtension)) {
return true;
}
}
return false;
}
/**
* Replaces the source file names in the current coverage with their mapping in the given map, if
* it exists.
*/
void maybeReplaceSourceFileNames(ImmutableMap<String, String> reportedToOriginalSources) {
Preconditions.checkNotNull(reportedToOriginalSources);
if (reportedToOriginalSources.isEmpty()) {
// nothing to replace
return;
}
for (SourceFileCoverage source : this.getAllSourceFiles()) {
if (reportedToOriginalSources.containsKey(source.sourceFileName())) {
source.changeSourcefileName(reportedToOriginalSources.get(source.sourceFileName()));
}
}
}
static Coverage filterOutMatchingSources(Coverage coverage, List<String> regexes)
throws IllegalArgumentException {
if (coverage == null || regexes == null) {
throw new IllegalArgumentException("Coverage and regex should not be null.");
}
if (regexes.isEmpty()) {
return coverage;
}
Coverage filteredCoverage = new Coverage();
for (SourceFileCoverage source : coverage.getAllSourceFiles()) {
if (!matchesAnyRegex(source.sourceFileName(), regexes)) {
filteredCoverage.add(source);
}
}
return filteredCoverage;
}
private static boolean matchesAnyRegex(String input, List<String> regexes) {
for (String regex : regexes) {
if (input.matches(regex)) {
return true;
}
}
return false;
}
boolean isEmpty() {
return sourceFiles.isEmpty();
}
Collection<SourceFileCoverage> getAllSourceFiles() {
return sourceFiles.values();
}
}
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