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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
****************************************************************************/
#include "DependencyTable.h"
#include "CppDocument.h"
#include <QDebug>
using namespace CPlusPlus;
QStringList DependencyTable::filesDependingOn(const QString &fileName) const
{
int index = fileIndex.value(fileName, -1);
if (index == -1) {
qWarning() << fileName << "not in the snapshot";
return QStringList();
}
QStringList 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;
}
QHash<QString, QStringList> DependencyTable::dependencyTable() const
{
QHash<QString, QStringList> depMap;
for (int index = 0; index < files.size(); ++index) {
QStringList deps;
for (int i = 0; i < files.size(); ++i) {
const QBitArray &bits = includeMap.at(i);
if (bits.testBit(index))
deps.append(files.at(i));
}
depMap[files.at(index)] = deps;
}
return depMap;
}
bool DependencyTable::isValidFor(const Snapshot &snapshot) const
{
const int documentCount = snapshot.size();
if (documentCount != files.size())
return false;
for (Snapshot::const_iterator it = snapshot.begin(); it != snapshot.end(); ++it) {
QHash<QString, QStringList>::const_iterator i = includesPerFile.find(it.key());
if (i == includesPerFile.end())
return false;
if (i.value() != it.value()->includedFiles())
return false;
}
return true;
}
void DependencyTable::build(const Snapshot &snapshot)
{
includesPerFile.clear();
files.clear();
fileIndex.clear();
includes.clear();
includeMap.clear();
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;
}
for (int i = 0; i < files.size(); ++i) {
const QString fileName = files.at(i);
if (Document::Ptr doc = snapshot.document(files.at(i))) {
QBitArray bitmap(files.size());
QList<int> directIncludes;
const QStringList documentIncludes = doc->includedFiles();
includesPerFile.insert(fileName, documentIncludes);
foreach (const QString &includedFile, documentIncludes) {
int index = fileIndex.value(includedFile);
if (index == -1)
continue;
else if (! directIncludes.contains(index))
directIncludes.append(index);
bitmap.setBit(index, true);
}
includeMap[i] = bitmap;
includes[i] = directIncludes;
}
}
bool changed;
do {
changed = false;
for (int i = 0; i < files.size(); ++i) {
QBitArray bitmap = includeMap.value(i);
QBitArray previousBitmap = bitmap;
foreach (int includedFileIndex, includes.value(i)) {
bitmap |= includeMap.value(includedFileIndex);
}
if (bitmap != previousBitmap) {
includeMap[i] = bitmap;
changed = true;
}
}
} while (changed);
}
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