File indexing completed on 2024-05-05 04:39:24

 /*
     SPDX-FileCopyrightText: 2008 Aleix Pol <aleixpol@gmail.com>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "cmakecodecompletionmodel.h"
 #include <QVariant>
 #include <QModelIndex>
 #include <QMimeDatabase>
 #include <QUrl>
 #include <language/duchain/duchain.h>
 #include <language/duchain/duchainlock.h>
 #include <language/duchain/ducontext.h>
 #include <language/duchain/declaration.h>
 #include <language/duchain/types/functiontype.h>
 #include <language/duchain/types/delayedtype.h>
 
 #include <cmakeduchaintypes.h>
 #include "cmakeutils.h"
 #include "icmakedocumentation.h"
 
 #include <KTextEditor/Document>
 #include <KTextEditor/View>
 #include <KIO/Global>
 #include <KLocalizedString>
 
 using namespace KTextEditor;
 using namespace KDevelop;
 
 QVector<QString> CMakeCodeCompletionModel::s_commands;
 
 CMakeCodeCompletionModel::CMakeCodeCompletionModel(QObject* parent)
     : CodeCompletionModel(parent)
     , m_inside(false)
 {}
 
 bool isFunction(const Declaration* decl)
 {
     return decl->abstractType().dynamicCast<FunctionType>();
 }
 
 bool isPathChar(QChar c)
 {
     return c.isLetterOrNumber() || c == QLatin1Char('/') || c == QLatin1Char('.');
 }
 
 QString escapePath(QString path)
 {
     // see https://cmake.org/Wiki/CMake/Language_Syntax#Escapes
     const QString toBeEscaped = QStringLiteral("\"()#$^");
 
     for(const QChar &ch : toBeEscaped) {
         path.replace(ch, QLatin1Char('\\') + ch);
     }
     return path;
 }
 
 void CMakeCodeCompletionModel::completionInvoked(View* view, const Range& range, InvocationType invocationType)
 {
     beginResetModel();
     if(s_commands.isEmpty()) {
         ICMakeDocumentation* cmakedoc=CMake::cmakeDocumentation();
         
         if(cmakedoc)
             s_commands=cmakedoc->names(ICMakeDocumentation::Command);
     }
     
     Q_UNUSED(invocationType);
     m_declarations.clear();
     DUChainReadLocker lock(DUChain::lock());
     KTextEditor::Document* d=view->document();
     TopDUContext* ctx = DUChain::self()->chainForDocument( d->url() );
     
     QString line=d->line(range.end().line());
 //     m_inside=line.lastIndexOf('(', range.end().column())>=0;
     m_inside=line.lastIndexOf(QLatin1Char('('), range.end().column()-line.size()-1)>=0;
     
     for(int l=range.end().line(); l>=0 && !m_inside; --l)
     {
         QString cline=d->line(l);
         const QStringRef line = cline.leftRef(cline.indexOf(QLatin1Char('#')));
         
         int close=line.lastIndexOf(QLatin1Char(')')), open=line.indexOf(QLatin1Char('('));
         
         if(close>=0 && open>=0) {
             m_inside=open>close;
             break;
         } else if(open>=0) {
             m_inside=true;
             break;
         } else if(close>=0) {
             m_inside=false;
             break;
         }
     }
     
     int numRows = 0;
     if(m_inside) {
         Cursor start=range.start();
         for(; isPathChar(d->characterAt(start)); start-=Cursor(0,1))
         {}
         start+=Cursor(0,1);
         
         QString tocomplete=d->text(Range(start, range.end()-Cursor(0,1)));
         
         int lastdir=tocomplete.lastIndexOf(QLatin1Char('/'));
         QString path = KIO::upUrl(QUrl(d->url())).adjusted(QUrl::StripTrailingSlash).toLocalFile()+QLatin1Char('/');
         if(lastdir>=0) {
             const QStringRef basePath = tocomplete.midRef(0, lastdir);
             path += basePath;
         }
         QDir dir(path);
         
         const QFileInfoList paths = dir.entryInfoList(QStringList(tocomplete.midRef(lastdir+1)+QLatin1Char('*')),
                                               QDir::AllEntries | QDir::NoDotAndDotDot);
         m_paths.clear();
         m_paths.reserve(paths.size());
         for (const QFileInfo& f : paths) {
             QString currentPath = f.fileName();
             if(f.isDir())
                 currentPath += QLatin1Char('/');
             m_paths += currentPath;
         }
         
         numRows += m_paths.count();
     } else
         numRows += s_commands.count();
     
     if(ctx)
     {
         const auto list = ctx->allDeclarations( ctx->transformToLocalRevision(KTextEditor::Cursor(range.start())), ctx );
 
         for (const auto& pair : list) {
             bool func=isFunction(pair.first);
             if((func && !m_inside) || (!func && m_inside))
                 m_declarations.append(pair.first);
         }
         
         numRows+=m_declarations.count();
     }
     setRowCount(numRows);
     endResetModel();
 }
 
 CMakeCodeCompletionModel::Type CMakeCodeCompletionModel::indexType(int row) const
 {
     if(m_inside)
     {
         if(row < m_declarations.count()) {
             KDevelop::DUChainReadLocker lock;
             Declaration* dec = m_declarations.at(row).declaration();
             if (dec && dec->type<TargetType>())
                 return Target;
             else
                 return Variable;
         } else
             return Path;
     }
     else
     {
         if(row<m_declarations.count())
             return Macro;
         else
             return Command;
     }
 }
 
 QVariant CMakeCodeCompletionModel::data (const QModelIndex & index, int role) const
 {
     if(!index.isValid())
         return QVariant();
     Type type=indexType(index.row());
 
     if(role==Qt::DisplayRole && index.column()==CodeCompletionModel::Name)
     {
         int pos = index.row();
         switch(type) {
             case Command:
                 return s_commands[pos-m_declarations.size()];
             case Path:
                 return m_paths[pos-m_declarations.size()];
             case Target:
             case Variable:
             case Macro: {
                 DUChainReadLocker lock(DUChain::lock());
                 Declaration* dec=m_declarations[pos].data();
                 
                 return dec ? dec->identifier().toString() : i18n("INVALID");
             }
         }
     }
     else if(role==Qt::DisplayRole && index.column()==CodeCompletionModel::Prefix)
     {
         switch(type)
         {
             case Command:   return i18nc("@item", "Command");
             case Variable:  return i18nc("@item", "Variable");
             case Macro:     return i18nc("@item", "Macro");
             case Path:      return i18nc("@item", "Path");
             case Target:    return i18nc("@item", "Target");
         }
     }
     else if(role==Qt::DecorationRole && index.column()==CodeCompletionModel::Icon)
     {
         switch(type)
         {
             case Command:   return QIcon::fromTheme(QStringLiteral("code-block"));
             case Variable:  return QIcon::fromTheme(QStringLiteral("code-variable"));
             case Macro:     return QIcon::fromTheme(QStringLiteral("code-function"));
             case Target:    return QIcon::fromTheme(QStringLiteral("system-run"));
             case Path: {
                 QUrl url = QUrl::fromUserInput(m_paths[index.row()-m_declarations.size()]);
                 QString iconName;
                 if (url.isLocalFile()) {
                     // don't read contents even if it is a local file
                     iconName = QMimeDatabase().mimeTypeForFile(url.toLocalFile(), QMimeDatabase::MatchExtension).iconName();
                 }
                 else {
                     // remote always only looks at the extension
                     iconName = QMimeDatabase().mimeTypeForUrl(url).iconName();
                 }
                 return QIcon::fromTheme(iconName);
             }
         }
     }
     else if(role==Qt::DisplayRole && index.column()==CodeCompletionModel::Arguments)
     {
         switch(type) {
             case Variable:
             case Command:
             case Path:
             case Target:
                 break;
             case Macro:
             {
                 DUChainReadLocker lock(DUChain::lock());
                 int pos=index.row();
 
                 FunctionType::Ptr func;
                 
                 if(m_declarations[pos].data())
                     func = m_declarations[pos].data()->abstractType().dynamicCast<FunctionType>();
 
                 if(!func)
                     return QVariant();
 
                 QStringList args;
                 const auto arguments = func->arguments();
                 args.reserve(arguments.size());
                 for (const AbstractType::Ptr& t : arguments) {
                     auto delay = t.dynamicCast<DelayedType>();
                     args.append(delay ? delay->identifier().toString() : i18n("wrong"));
                 }
                 return QString(QLatin1Char('(') + args.join(QLatin1String(", ")) + QLatin1Char(')'));
             }
         }
         
     }
     return QVariant();
 }
 
 void CMakeCodeCompletionModel::executeCompletionItem(View* view, const Range& word, const QModelIndex& idx) const
 {
     Document* document = view->document();
     const int row = idx.row();
     switch(indexType(row))
     {
         case Path: {
             Range r=word;
             for (QChar c=document->characterAt(r.end()); c.isLetterOrNumber() || c==QLatin1Char('.'); c=document->characterAt(r.end())) {
                 r.setEnd(KTextEditor::Cursor(r.end().line(), r.end().column()+1));
             }
             QString path = data(index(row, Name, QModelIndex())).toString();
 
             document->replaceText(r, escapePath(path));
         }   break;
         case Macro:
         case Command: {
             QString code=data(index(row, Name, QModelIndex())).toString();
             if (!document->line(word.start().line()).contains(QLatin1Char('(')))
                 code.append(QLatin1Char('('));
             
             document->replaceText(word, code);
         }   break;
         case Variable: {
             Range r=word, prefix(word.start()-Cursor(0,2), word.start());
             QString bef=document->text(prefix);
             if(r.start().column()>=2 && bef==QLatin1String("${"))
                 r.setStart(KTextEditor::Cursor(r.start().line(), r.start().column()-2));
             QString code = QLatin1String("${")+data(index(row, Name, QModelIndex())).toString();
             if(document->characterAt(word.end())!=QLatin1Char('}'))
                 code += QLatin1Char('}');
             
             document->replaceText(r, code);
         }   break;
         case Target:
             document->replaceText(word, data(index(row, Name, QModelIndex())).toString());
             break;
     }
 }
 
 #include "moc_cmakecodecompletionmodel.cpp"