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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include "CppDocument.h"
#include <QDebug>
#include <QFuture>
using namespace Utils;
namespace CPlusPlus {
Utils::FilePaths DependencyTable::filesDependingOn(const Utils::FilePath &fileName) const
{
Utils::FilePaths deps;
int index = fileIndex.value(fileName, -1);
if (index == -1)
return deps;
for (int i = 0; i < files.size(); ++i) {
const QBitArray &bits = includeMap.at(i);
if (bits.testBit(index))
deps.append(files.at(i));
}
return deps;
}
void DependencyTable::build(const std::optional<QFuture<void>> &future, const Snapshot &snapshot)
{
files.clear();
fileIndex.clear();
includes.clear();
includeMap.clear();
if (future && future->isCanceled())
return;
const int documentCount = snapshot.size();
files.resize(documentCount);
includeMap.resize(documentCount);
int i = 0;
for (Snapshot::const_iterator it = snapshot.begin(); it != snapshot.end();
++it, ++i) {
files[i] = it.key();
fileIndex[it.key()] = i;
}
if (future && future->isCanceled())
return;
for (int i = 0; i < files.size(); ++i) {
const Utils::FilePath &fileName = files.at(i);
if (Document::Ptr doc = snapshot.document(fileName)) {
QBitArray bitmap(files.size());
QList<int> directIncludes;
const FilePaths documentIncludes = doc->includedFiles();
for (const FilePath &includedFile : documentIncludes) {
int index = fileIndex.value(includedFile);
if (index == -1)
continue;
else if (! directIncludes.contains(index))
directIncludes.append(index);
bitmap.setBit(index, true);
if (future && future->isCanceled())
return;
}
includeMap[i] = bitmap;
includes[i] = directIncludes;
if (future && future->isCanceled())
return;
}
}
bool changed;
do {
changed = false;
for (int i = 0; i < files.size(); ++i) {
QBitArray bitmap = includeMap.value(i);
QBitArray previousBitmap = bitmap;
const QList<int> includedFileIndexes = includes.value(i);
for (const int includedFileIndex : includedFileIndexes) {
bitmap |= includeMap.value(includedFileIndex);
if (future && future->isCanceled())
return;
}
if (bitmap != previousBitmap) {
includeMap[i] = bitmap;
changed = true;
}
if (future && future->isCanceled())
return;
}
if (future && future->isCanceled())
return;
} while (changed);
}
} // CPlusPlus
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