makefiledeps.cpp

qtmake 文件的代码

                        }
                    }
                    if(!exists) { //heuristic lookup
                        lfn = findFileForDep(QMakeLocalFileName(inc), file->file);
                        if((exists = !lfn.isNull()))
                            lfn = fixPathForFile(lfn);
                    }
                } else {
                    exists = QFile::exists(lfn.real());
                }
                if(!lfn.isNull()) {
                    dep = files->lookupFile(lfn);
                    if(!dep) {
                        dep = new SourceFile;
                        dep->file = lfn;
                        dep->type = QMakeSourceFileInfo::TYPE_C;
                        files->addFile(dep);
                        includes->addFile(dep, inc, false);
                    }
                    dep->exists = exists;
                }
            }
            if(dep) {
                dep->included_count++;
                if(dep->exists) {
                    debug_msg(5, "%s:%d Found dependency to %s", file->file.real().toLatin1().constData(),
                              line_count, dep->file.local().toLatin1().constData());
                    file->deps->addChild(dep);
                }
            }
        }
    }
    if(dependencyMode() == Recursive) { //done last because buffer is shared
        for(int i = 0; i < file->deps->used_nodes; i++) {
            if(!file->deps->children[i]->deps)
                findDeps(file->deps->children[i]);
        }
    }
    return true;
}

bool QMakeSourceFileInfo::findMocs(SourceFile *file)
{
    if(file->moc_checked)
        return true;
    files_changed = true;
    file->moc_checked = true;

    int buffer_len;
    char *buffer = 0;
    {
        struct stat fst;
        int fd;
#if defined(_MSC_VER) && _MSC_VER >= 1400
        if (_sopen_s(&fd, fixPathForFile(file->file, true).local().toLocal8Bit().constData(),
            _O_RDONLY, _SH_DENYRW, _S_IREAD) != 0)
            fd = -1;
#else
        fd = open(fixPathForFile(file->file, true).local().toLocal8Bit().constData(), O_RDONLY);
#endif
        if(fd == -1 || fstat(fd, &fst) || S_ISDIR(fst.st_mode))
            return false; //shouldn't happen
        buffer = getBuffer(fst.st_size);
        for(int have_read = buffer_len = 0;
            (have_read = QT_READ(fd, buffer + buffer_len, fst.st_size - buffer_len));
            buffer_len += have_read);
        QT_CLOSE(fd);
    }

    debug_msg(2, "findMocs: %s", file->file.local().toLatin1().constData());
    int line_count = 1;
    bool ignore_qobject = false, ignore_qgadget = false;
 /* qmake ignore Q_GADGET */
 /* qmake ignore Q_OBJECT */
    for(int x = 0; x < buffer_len; x++) {
        if(*(buffer + x) == '/') {
            ++x;
            if(buffer_len >= x) {
                if(*(buffer + x) == '/') { //c++ style comment
                    for(;x < buffer_len && !qmake_endOfLine(*(buffer + x)); ++x);
                    ++line_count;
                } else if(*(buffer + x) == '*') { //c style comment
                    for(;x < buffer_len; ++x) {
                        if(*(buffer + x) == 't' || *(buffer + x) == 'q') { //ignore
                            if(buffer_len >= (x + 20) &&
                               !strncmp(buffer + x + 1, "make ignore Q_OBJECT", 20)) {
                                debug_msg(2, "Mocgen: %s:%d Found \"qmake ignore Q_OBJECT\"",
                                          file->file.real().toLatin1().constData(), line_count);
                                x += 20;
                                ignore_qobject = true;
                            } else if(buffer_len >= (x + 20) &&
                                      !strncmp(buffer + x + 1, "make ignore Q_GADGET", 20)) {
                                debug_msg(2, "Mocgen: %s:%d Found \"qmake ignore Q_GADGET\"",
                                          file->file.real().toLatin1().constData(), line_count);
                                x += 20;
                                ignore_qgadget = true;
                            }
                        } else if(*(buffer + x) == '*') {
                            if(buffer_len >= (x+1) && *(buffer + (x+1)) == '/') {
                                x += 2;
                                break;
                            }
                        } else if(Option::debug_level && qmake_endOfLine(*(buffer + x))) {
                            ++line_count;
                        }
                    }
                }
            }
        }
        if(((buffer_len > x+2 &&  *(buffer+x+1) == 'Q' && *(buffer+x+2) == '_')
                   ||
            (buffer_len > x+4 &&  *(buffer+x+1) == 'Q' && *(buffer+x+2) == 'O'
                              &&  *(buffer+x+3) == 'M' && *(buffer+x+4) == '_'))
                   &&
                  *(buffer + x) != '_' &&
                  (*(buffer + x) < 'a' || *(buffer + x) > 'z') &&
                  (*(buffer + x) < 'A' || *(buffer + x) > 'Z') &&
                  (*(buffer + x) < '0' || *(buffer + x) > '9')) {
            ++x;
            int match = 0;
            static const char *interesting[] = { "OBJECT", "GADGET",
                                                 "M_OBJECT" };
            for(int interest = 0, m1, m2; interest < 3; ++interest) {
                if(interest == 0 && ignore_qobject)
                    continue;
                else if(interest == 1 && ignore_qgadget)
                    continue;
                for(m1 = 0, m2 = 0; *(interesting[interest]+m1); ++m1) {
                    if(*(interesting[interest]+m1) != *(buffer+x+2+m1)) {
                        m2 = -1;
                        break;
                    }
                    ++m2;
                }
                if(m1 == m2) {
                    match = m2 + 2;
                    break;
                }
            }
            if(match && *(buffer+x+match) != '_' &&
               (*(buffer+x+match) < 'a' || *(buffer+x+match) > 'z') &&
               (*(buffer+x+match) < 'A' || *(buffer+x+match) > 'Z') &&
               (*(buffer+x+match) < '0' || *(buffer+x+match) > '9')) {
                if(Option::debug_level) {
                    *(buffer+x+match) = '\0';
                    debug_msg(2, "Mocgen: %s:%d Found MOC symbol %s", file->file.real().toLatin1().constData(),
                              line_count, buffer+x);
                }
                file->mocable = true;
                return true;
            }
        }
        if(Option::debug_level && qmake_endOfLine(*(buffer+x)))
            ++line_count;
    }
    return true;
}


void QMakeSourceFileInfo::saveCache(const QString &cf)
{
#ifdef QMAKE_USE_CACHE
    if(cf.isEmpty())
        return;

    QFile file(QMakeLocalFileName(cf).local());
    if(file.open(QIODevice::WriteOnly)) {
        QTextStream stream(&file);
        stream << qmake_version() << endl << endl; //version
        { //cache verification
            QMap<QString, QStringList> verify = getCacheVerification();
             stream << verify.count() << endl;
             for(QMap<QString, QStringList>::iterator it = verify.begin();
                 it != verify.end(); ++it) {
                 stream << it.key() << endl << it.value().join(";") << endl;
             }
             stream << endl;
        }
        if(files->nodes) {
            for(int file = 0; file < files->num_nodes; ++file) {
                for(SourceFiles::SourceFileNode *node = files->nodes[file]; node; node = node->next) {
                    stream << node->file->file.local() << endl; //source
                    stream << node->file->type << endl; //type

                    //depends
                    stream << ";";
                    if(node->file->deps) {
                        for(int depend = 0; depend < node->file->deps->used_nodes; ++depend) {
                            if(depend)
                                stream << ";";
                            stream << node->file->deps->children[depend]->file.local();
                        }
                    }
                    stream << endl;

                    stream << node->file->mocable << endl; //mocable
                    stream << endl; //just for human readability
                }
            }
        }
        stream.flush();
        file.close();
    }
#else
    Q_UNUSED(cf);
#endif
}

void QMakeSourceFileInfo::loadCache(const QString &cf)
{
    if(cf.isEmpty())
        return;

#ifdef QMAKE_USE_CACHE
    QMakeLocalFileName cache_file(cf);
    int fd = open(QMakeLocalFileName(cf).local().toLatin1(), O_RDONLY);
    if(fd == -1)
        return;
    QFileInfo cache_fi = findFileInfo(cache_file);
    if(!cache_fi.exists() || cache_fi.isDir())
        return;

    QFile file;
    if(!file.open(QIODevice::ReadOnly, fd))
        return;
    QTextStream stream(&file);

    if(stream.readLine() == qmake_version()) { //version check
        stream.skipWhiteSpace();

        bool verified = true;
        { //cache verification
            QMap<QString, QStringList> verify;
            int len = stream.readLine().toInt();
            for(int i = 0; i < len; ++i) {
                QString var = stream.readLine();
                QString val = stream.readLine();
                verify.insert(var, val.split(';', QString::SkipEmptyParts));
            }
            verified = verifyCache(verify);
        }
        if(verified) {
            stream.skipWhiteSpace();
            if(!files)
                files = new SourceFiles;
            while(!stream.atEnd()) {
                QString source = stream.readLine();
                QString type = stream.readLine();
                QString depends = stream.readLine();
                QString mocable = stream.readLine();
                stream.skipWhiteSpace();

                QMakeLocalFileName fn(source);
                QFileInfo fi = findFileInfo(fn);

                SourceFile *file = files->lookupFile(fn);
                if(!file) {
                    file = new SourceFile;
                    file->file = fn;
                    files->addFile(file);
                    file->type = (SourceFileType)type.toInt();
                    file->exists = fi.exists();
                }
                if(fi.exists() && fi.lastModified() < cache_fi.lastModified()) {
                    if(!file->dep_checked) { //get depends
                        if(!file->deps)
                            file->deps = new SourceDependChildren;
                        file->dep_checked = true;
                        QStringList depend_list = depends.split(";", QString::SkipEmptyParts);
                        for(int depend = 0; depend < depend_list.size(); ++depend) {
                            QMakeLocalFileName dep_fn(depend_list.at(depend));
                            QFileInfo dep_fi(findFileInfo(dep_fn));
                            SourceFile *dep = files->lookupFile(dep_fn);
                            if(!dep) {
                                dep = new SourceFile;
                                dep->file = dep_fn;
                                dep->exists = dep_fi.exists();
                                dep->type = QMakeSourceFileInfo::TYPE_UNKNOWN;
                                files->addFile(dep);
                            }
                            dep->included_count++;
                            file->deps->addChild(dep);
                        }
                    }
                    if(!file->moc_checked) { //get mocs
                        file->moc_checked = true;
                        file->mocable = mocable.toInt();
                    }
                }
            }
        }
    }
#endif
}

QMap<QString, QStringList> QMakeSourceFileInfo::getCacheVerification()
{
    return QMap<QString, QStringList>();
}

bool QMakeSourceFileInfo::verifyCache(const QMap<QString, QStringList> &v)
{
    return v == getCacheVerification();
}