/*
 * Copyright (C) 2020-2022 Roy Qu (royqh1979@gmail.com)
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
#include "editor.h"

#include <QtCore/QFileInfo>
#include <QFont>
#include <QTextCodec>
#include <QVariant>
#include <QWheelEvent>
#include <memory>
#include "settings.h"
#include "mainwindow.h"
#include "systemconsts.h"
#include <QFileDialog>
#include <QMessageBox>
#include <QDebug>
#include <QMimeData>
#include "qsynedit/highlighter/cpp.h"
#include "HighlighterManager.h"
#include "qsynedit/exporter/synrtfexporter.h"
#include "qsynedit/exporter/synhtmlexporter.h"
#include "qsynedit/Constants.h"
#include <QGuiApplication>
#include <QClipboard>
#include <QPainter>
#include <QToolTip>
#include <QApplication>
#include <QInputDialog>
#include <QPrinter>
#include <QPrintDialog>
#include <QTextDocument>
#include <QTextCodec>
#include <QScrollBar>
#include "iconsmanager.h"
#include "debugger.h"
#include "editorlist.h"
#include <QDebug>
#include "project.h"
#include <qt_utils/charsetinfo.h>

using namespace std;

SaveException::SaveException(const QString& reason) {
    mReason = reason;
    mReasonBuffer = mReason.toLocal8Bit();
}
SaveException::SaveException(const QString&& reason) {
    mReason = reason;
    mReasonBuffer = mReason.toLocal8Bit();
}
const QString& SaveException::reason() const  noexcept{
    return mReason;
}
const char* SaveException::what() const noexcept {
    return mReasonBuffer;
}

QHash<ParserLanguage,std::weak_ptr<CppParser>> Editor::mSharedParsers;

Editor::Editor(QWidget *parent):
    Editor(parent,"untitled",ENCODING_AUTO_DETECT,nullptr,true,nullptr)
{
}

Editor::Editor(QWidget *parent, const QString& filename,
                  const QByteArray& encoding,
                  Project* pProject, bool isNew,
                  QTabWidget* parentPageControl):
  SynEdit(parent),
  mEncodingOption(encoding),
  mFilename(QFileInfo(filename).absoluteFilePath()),
  mParentPageControl(parentPageControl),
  mProject(pProject),
  mIsNew(isNew),
  mSyntaxIssues(),
  mSyntaxErrorColor(Qt::red),
  mSyntaxWarningColor("orange"),
  mLineCount(0),
  mActiveBreakpointLine(-1),
  mLastIdCharPressed(0),
  mCurrentWord(),
  mCurrentTipType(TipType::None),
  mOldHighlightedWord(),
  mCurrentHighlightedWord(),
  mSaving(false),
  mHoverModifiedLine(-1)
{
    mHighlightCharPos1 = QSynedit::BufferCoord{0,0};
    mHighlightCharPos2 = QSynedit::BufferCoord{0,0};
    mCurrentLineModified = false;
    mUseCppSyntax = pSettings->editor().defaultFileCpp();
    if (mFilename.isEmpty()) {
        mFilename = QString("untitled%1").arg(getNewFileNumber());
    }
    QFileInfo fileInfo(mFilename);
    QSynedit::PHighlighter highlighter;
    if (!isNew) {
        loadFile();
        highlighter = highlighterManager.getHighlighter(mFilename);
    } else {
        mFileEncoding = ENCODING_ASCII;
        highlighter=highlighterManager.getCppHighlighter();
    }

    if (highlighter) {
        setHighlighter(highlighter);
        setUseCodeFolding(true);
    } else {
        setUseCodeFolding(false);
    }

    if (mProject) {
        mParser = mProject->cppParser();
    } else {
        initParser();
    }

    if (shouldOpenInReadonly()) {
        this->setModified(false);
        setReadOnly(true);
    }

    mCompletionPopup = pMainWindow->completionPopup();
    mHeaderCompletionPopup = pMainWindow->headerCompletionPopup();

    applySettings();
    applyColorScheme(pSettings->editor().colorScheme());

    //Initialize User Code Template stuff;
    mXOffsetSince =0;
    mTabStopY=-1;
    mTabStopBegin= -1;
    mTabStopEnd= -1;
    //mLineBeforeTabStop="";
    //mLineAfterTabStop = "";

    connect(this,&SynEdit::statusChanged,this,&Editor::onStatusChanged);

    if (mParentPageControl)
        connect(this,&SynEdit::gutterClicked,this,&Editor::onGutterClicked);

    onStatusChanged(QSynedit::StatusChange::scOpenFile);

    setAttribute(Qt::WA_Hover,true);

    connect(this,&SynEdit::linesDeleted,
            this, &Editor::onLinesDeleted);
    connect(this,&SynEdit::linesInserted,
            this, &Editor::onLinesInserted);

    setContextMenuPolicy(Qt::CustomContextMenu);

    if (mParentPageControl)
        connect(this, &QWidget::customContextMenuRequested,
            pMainWindow, &MainWindow::onEditorContextMenu);

    mCanAutoSave = false;
    if (isNew && parentPageControl!=nullptr) {
        QString fileTemplate = pMainWindow->codeSnippetManager()->newFileTemplate();
        if (!fileTemplate.isEmpty()) {
            insertCodeSnippet(fileTemplate);
            setCaretPosition(1,1);
            mCanAutoSave = true;
        }
    }
    if (!isNew && parentPageControl) {
        resetBookmarks();
        resetBreakpoints();
    }

    mStatementColors = pMainWindow->statementColors();
    if (mParentPageControl) {
        mParentPageControl->addTab(this,"");
        updateCaption();
    }

    if (mParentPageControl==nullptr) {
        setExtraKeystrokes();
    }

    if (mParentPageControl)
        connect(&mFunctionTipTimer, &QTimer::timeout,
            this, &Editor::onFunctionTipsTimer);

    connect(horizontalScrollBar(), &QScrollBar::valueChanged,
            this, &Editor::onScrollBarValueChanged);
    connect(verticalScrollBar(), &QScrollBar::valueChanged,
            this, &Editor::onScrollBarValueChanged);
}

Editor::~Editor() {
    //qDebug()<<"editor "<<mFilename<<" deleted";
}

void Editor::loadFile(QString filename) {
    if (filename.isEmpty()) {
        this->document()->loadFromFile(mFilename,mEncodingOption,mFileEncoding);
    } else {
        filename = QFileInfo(filename).absoluteFilePath();
        this->document()->loadFromFile(filename,mEncodingOption,mFileEncoding);
    }
    //this->setModified(false);
    updateCaption();
    if (mParentPageControl)
        pMainWindow->updateForEncodingInfo(this);
    switch(getFileType(mFilename)) {
    case FileType::CppSource:
        mUseCppSyntax = true;
        break;
    case FileType::CSource:
        mUseCppSyntax = false;
        break;
    default:
        mUseCppSyntax = pSettings->editor().defaultFileCpp();
    }
    if (highlighter()) {
        reparse(true);
        if (pSettings->editor().syntaxCheckWhenLineChanged()) {
            checkSyntaxInBack();
        }
        reparseTodo();
    }
    mLastIdCharPressed = 0;
}

void Editor::saveFile(QString filename) {
    QFile file(filename);
    QByteArray encoding = mFileEncoding;
    if (mEncodingOption!=ENCODING_AUTO_DETECT || mFileEncoding==ENCODING_ASCII)
        encoding = mEncodingOption;

    this->document()->saveToFile(file,encoding,
                              pSettings->editor().defaultEncoding(),
                              mFileEncoding);
    if (isVisible() && mParentPageControl)
        pMainWindow->updateForEncodingInfo(this);
    emit fileSaved(filename, inProject());
}

void Editor::convertToEncoding(const QByteArray &encoding)
{
    mEncodingOption = encoding;
    setModified(true);
    save();
}

bool Editor::save(bool force, bool doReparse) {
    if (this->mIsNew && !force) {
        return saveAs();
    }
    //is this file writable;
    pMainWindow->fileSystemWatcher()->removePath(mFilename);
    try {
        if (pSettings->editor().autoFormatWhenSaved()) {
            reformat(false);
        }
        saveFile(mFilename);
        pMainWindow->fileSystemWatcher()->addPath(mFilename);
        setModified(false);
        mIsNew = false;
        updateCaption();
    }  catch (SaveException& exception) {
        if (!force) {
            QMessageBox::critical(pMainWindow,tr("Error"),
                                 exception.reason());
        }
        pMainWindow->fileSystemWatcher()->addPath(mFilename);
        return false;
    }

    if (doReparse && isVisible()) {
        reparse(false);
        if (pSettings->editor().syntaxCheckWhenSave())
            checkSyntaxInBack();
        reparseTodo();
    }
    return true;
}

bool Editor::saveAs(const QString &name, bool fromProject){
    QString newName = name;
    QString oldName = mFilename;
    bool firstSave = isNew();
    if (name.isEmpty()) {
        QString selectedFileFilter;
        QString defaultExt;
        if (pSettings->editor().defaultFileCpp()) {
            selectedFileFilter = pSystemConsts->defaultCPPFileFilter();
            defaultExt = "cpp";
        } else {
            selectedFileFilter = pSystemConsts->defaultCFileFilter();
            defaultExt = "c";
        }
        QFileDialog dialog(this,tr("Save As"),extractFilePath(mFilename),
                           pSystemConsts->defaultFileFilters().join(";;"));
        dialog.selectNameFilter(selectedFileFilter);
        dialog.setDefaultSuffix(defaultExt);
        dialog.selectFile(mFilename);
        dialog.setFileMode(QFileDialog::AnyFile);
        dialog.setAcceptMode(QFileDialog::AcceptSave);
        connect(&dialog, &QFileDialog::filterSelected,
                [&dialog](const QString &filter){
            int pos = filter.indexOf("*.");
            if (pos>=0) {
                QString suffix;
                pos+=2;
                while (pos<filter.length()) {
                    if (filter[pos] == ';' || filter[pos] ==' ' || filter[pos] == ')')
                        break;
                    suffix+=filter[pos];
                    pos++;
                }
                dialog.setDefaultSuffix(suffix);
            }
        });

        if (dialog.exec()!=QFileDialog::Accepted) {
            return false;
        }
        newName = dialog.selectedFiles()[0];
        QDir::setCurrent(extractFileDir(newName));
    }

    if (pMainWindow->editorList()->getOpenedEditorByFilename(newName)) {
        QMessageBox::critical(pMainWindow,tr("Error"),
                              tr("File %1 already openned!").arg(newName));
        return false;
    }
    // Update project information
    if (mProject && !fromProject) {
        PProjectUnit unit = mProject->findUnit(newName);
        if (!unit) {
            setProject(nullptr);
        }
    }

    clearSyntaxIssues();
    pMainWindow->fileSystemWatcher()->removePath(mFilename);
    if (pSettings->codeCompletion().enabled() && mParser && !inProject()) {
        mParser->invalidateFile(mFilename);
    }

    if (pSettings->editor().autoFormatWhenSaved()) {
        reformat(false);
    }
    try {
        mFilename = newName;
        saveFile(mFilename);
        mIsNew = false;
        setModified(false);
    }  catch (SaveException& exception) {
        QMessageBox::critical(pMainWindow,tr("Error"),
                                 exception.reason());
        return false;
    }
    if (mProject && !fromProject) {
        mProject->associateEditor(this);
    }
    pMainWindow->fileSystemWatcher()->addPath(mFilename);
    switch(getFileType(mFilename)) {
    case FileType::CppSource:
        mUseCppSyntax = true;
        break;
    case FileType::CSource:
        mUseCppSyntax = false;
        break;
    default:
        mUseCppSyntax = pSettings->editor().defaultFileCpp();
    }

    //update (reassign highlighter)
    QSynedit::PHighlighter newHighlighter = HighlighterManager().getHighlighter(mFilename);
    if (newHighlighter) {
        setUseCodeFolding(true);
    } else {
        setUseCodeFolding(false);
    }
    setHighlighter(newHighlighter);
    if (!newHighlighter || newHighlighter->getName() != SYN_HIGHLIGHTER_CPP) {
        mSyntaxIssues.clear();
    }
    applyColorScheme(pSettings->editor().colorScheme());

    if (!inProject())
        reparse(false);

    if (pSettings->editor().syntaxCheckWhenSave())
        checkSyntaxInBack();

    if (!inProject())
        reparseTodo();

    if (!shouldOpenInReadonly()) {
        setReadOnly(false);
    }
    updateCaption();

    emit renamed(oldName, newName , firstSave);
    return true;
}

void Editor::activate()
{
    if (mParentPageControl)
        mParentPageControl->setCurrentWidget(this);
    setFocus();
}

const QByteArray& Editor::encodingOption() const noexcept{
    return mEncodingOption;
}
void Editor::setEncodingOption(const QByteArray& encoding) noexcept{
    if (mEncodingOption == encoding)
        return;
    mEncodingOption = encoding;
    if (!isNew())
        loadFile();
    else if (mParentPageControl)
        pMainWindow->updateForEncodingInfo(this);
    if (mProject) {
        PProjectUnit unit = mProject->findUnit(this);
        if (unit) {
            unit->setEncoding(mEncodingOption);
        }
    }
}
const QByteArray& Editor::fileEncoding() const noexcept{
    return mFileEncoding;
}
const QString& Editor::filename() const noexcept{
    return mFilename;
}
bool Editor::inProject() const noexcept{
    return mProject!=nullptr;
}
bool Editor::isNew() const noexcept {
    return mIsNew;
}

QTabWidget* Editor::pageControl() noexcept{
    return mParentPageControl;
}
static int findWidgetInPageControl(QTabWidget* pageControl, QWidget* child) {
    for (int i=0;i<pageControl->count();i++) {
        if (pageControl->widget(i)==child)
            return i;
    }
    return -1;
}
void Editor::setPageControl(QTabWidget *newPageControl)
{
    if (mParentPageControl==newPageControl)
        return;
    if (mParentPageControl) {
        int index = findWidgetInPageControl(mParentPageControl,this);
        if (index>=0)
            mParentPageControl->removeTab(index);
    }
    mParentPageControl= newPageControl;
    if (newPageControl!=nullptr) {
        mParentPageControl->addTab(this,"");
        updateCaption();
    }
}

void Editor::undoSymbolCompletion(int pos)
{
    QSynedit::PHighlighterAttribute attr;
    QString token;
    bool tokenFinished;

    if (!highlighter())
        return;
    if (!pSettings->editor().removeSymbolPairs())
        return;
    if (!getHighlighterAttriAtRowCol(caretXY(), token, tokenFinished, attr))
        return;
    if ((attr->tokenType() == QSynedit::TokenType::Comment) && (!tokenFinished))
        return ;
    //convert caret x to string index;
    pos--;

    if (pos<0 || pos+1>=lineText().length())
        return;
    QChar DeletedChar = lineText().at(pos);
    QChar NextChar = lineText().at(pos+1);
    if ((attr->tokenType() == QSynedit::TokenType::Character) && (DeletedChar != '\''))
        return;
//    if (attr->tokenType() == QSynedit::TokenType::StringEscapeSequence)
//        return;
    if (attr->tokenType() == QSynedit::TokenType::String) {
        if ((DeletedChar!='"') && (DeletedChar!='('))
            return;
        if ((DeletedChar=='"') && (token!="\"\""))
            return;
        if ((DeletedChar=='(') && (!token.startsWith("R\"")))
            return;
    }
    if ((DeletedChar == '\'') && (attr->tokenType() == QSynedit::TokenType::Number))
        return;
    if ((DeletedChar == '<') &&
            !(mParser && mParser->isIncludeLine(lineText())))
        return;
    if ( (pSettings->editor().completeBracket() && (DeletedChar == '[') && (NextChar == ']')) ||
         (pSettings->editor().completeParenthese() && (DeletedChar == '(') && (NextChar == ')')) ||
         (pSettings->editor().completeGlobalInclude() && (DeletedChar == '<') && (NextChar == '>')) ||
         (pSettings->editor().completeBrace() && (DeletedChar == '{') && (NextChar == '}')) ||
         (pSettings->editor().completeSingleQuote() && (DeletedChar == '\'') && (NextChar == '\'')) ||
         (pSettings->editor().completeDoubleQuote() && (DeletedChar == '\"') && (NextChar == '\"'))) {
         commandProcessor(QSynedit::EditCommand::ecDeleteChar);
    }
}

void Editor::wheelEvent(QWheelEvent *event) {
    if ( (event->modifiers() & Qt::ControlModifier)!=0) {
        int size = pSettings->editor().fontSize();
        if (event->angleDelta().y()>0) {
            size = std::min(99,size+1);
            pSettings->editor().setFontSize(size);
            pSettings->editor().save();
            pMainWindow->updateEditorSettings();
            event->accept();
            return;
        } else if  (event->angleDelta().y()<0) {
            size = std::max(2,size-1);
            pSettings->editor().setFontSize(size);
            pSettings->editor().save();
            pMainWindow->updateEditorSettings();
            event->accept();
            return;
        }
    }
    SynEdit::wheelEvent(event);
}

void Editor::focusInEvent(QFocusEvent *event)
{
    SynEdit::focusInEvent(event);
}

void Editor::focusOutEvent(QFocusEvent *event)
{
    SynEdit::focusOutEvent(event);
    //pMainWindow->updateClassBrowserForEditor(nullptr);
    pMainWindow->functionTip()->hide();
}

void Editor::keyPressEvent(QKeyEvent *event)
{
    bool handled = false;
    auto action = finally([&,this]{
        if (!handled) {
            SynEdit::keyPressEvent(event);
        } else {
            event->accept();
        }
    });
    if (readOnly())
        return;

    switch (event->key()) {
    case Qt::Key_Return:
    case Qt::Key_Enter:
        mLastIdCharPressed = 0;
        if (mTabStopBegin>=0) { // editing user code template
            handled = true;
            mTabStopBegin = -1;
            invalidateLine(caretY());
            clearUserCodeInTabStops();
        } else {
            QString s = lineText().mid(0,caretX()-1).trimmed();
            if (s=="/**") { //javadoc style docstring
                s = lineText().mid(caretX()-1).trimmed();
                if (s=="*/") {
                    QSynedit::BufferCoord p = caretXY();
                    setBlockBegin(p);
                    p.ch = lineText().length()+1;
                    setBlockEnd(p);
                    setSelText("");
                }
                handled = true;
                QStringList insertString;
                insertString.append("");
                PStatement function;
                if (mParser)
                    function = mParser->findFunctionAt(mFilename,caretY()+1);
                if (function) {
                    QStringList params;
                    QString funcName = function->command;
                    bool isVoid = (function->type  == "void");
                    foreach (const PStatement& child, function->children) {
                        if (child->kind == StatementKind::skParameter)
                            params.append(child->command);
                    }
                    insertString.append(QString(" * @brief ")+USER_CODE_IN_INSERT_POS);
                    if (!params.isEmpty())
                        insertString.append(" * ");
                    foreach (const QString& param, params) {
                        insertString.append(QString(" * @param %1 %2")
                                            .arg(param, USER_CODE_IN_INSERT_POS));
                    }
                    if (!isVoid) {
                        insertString.append(" * ");
                        insertString.append(QString(" * @return ")+USER_CODE_IN_INSERT_POS);
                    }
                    insertString.append(" */");
//                } else if (caretY()==1) { /* file header */
//                    insertString.append(QString(" * @file %1<SOURCEPATH>%2")
//                                        .arg(USER_CODE_IN_REPL_POS_BEGIN)
//                                        .arg(USER_CODE_IN_REPL_POS_END));
//                    insertString.append(QString(" * @brief: ")+ USER_CODE_IN_INSERT_POS);
//                    insertString.append(QString(" * @version: ")+ USER_CODE_IN_INSERT_POS);
//                    insertString.append(QString(" * @copyright: ")+ USER_CODE_IN_INSERT_POS);
//                    insertString.append(QString(" * @author: ")+ USER_CODE_IN_INSERT_POS);
//                    insertString.append(" * @date: <DATETIME>");
//                    insertString.append(" * ");
//                    insertString.append(" **/");
                } else {
                    insertString.append(QString(" * ")+USER_CODE_IN_INSERT_POS);
                    insertString.append(" */");
                }
                insertCodeSnippet(linesToText(insertString));
            } else if (highlighter()
                       && caretY()>=2
                       && highlighter()->isLastLineCommentNotFinished(
                           document()->ranges(caretY()-2).state)) {
                s=trimLeft(lineText());
                if (s.startsWith("* ")) {
                    handled = true;
                    int right = document()->getString(caretY()-1).length()-caretX();
                    s=lineBreak()+"* ";
                    insertString(s,false);
                    QSynedit::BufferCoord p = caretXY();
                    p.line++;
                    p.ch = document()->getString(p.line-1).length()+1;
                    if (right>0) {
                        p.ch -=right+1;
                    }
                    setCaretXY(p);
                }
            }
        }
        return;
    case Qt::Key_Escape: // Update function tip
        mLastIdCharPressed = 0;
        if (mTabStopBegin>=0) {
            mTabStopBegin = -1;
            setBlockEnd(caretXY());
            invalidateLine(caretY());
            clearUserCodeInTabStops();
        }
        pMainWindow->functionTip()->hide();
        return;
    case Qt::Key_Tab:
        handled = true;
        tab();
        return;
    case Qt::Key_Backtab:
        handled = true;
        shifttab();
        return;
    case Qt::Key_Up:
        if (pMainWindow->functionTip()->isVisible()) {
            handled = true;
            pMainWindow->functionTip()->previousTip();
        } else {
            mLastIdCharPressed = 0;
            clearUserCodeInTabStops();
        }
        return;
    case Qt::Key_Down:
        if (pMainWindow->functionTip()->isVisible()) {
            handled = true;
            pMainWindow->functionTip()->nextTip();
        } else {
            mLastIdCharPressed = 0;
            clearUserCodeInTabStops();
        }
        return;
    case Qt::Key_Delete:
        // remove completed character
        mLastIdCharPressed = 0;
        if (!selAvail()) {
            undoSymbolCompletion(caretX());
        }
        return;
    case Qt::Key_Backspace:
        // remove completed character
        mLastIdCharPressed = 0;
        if (!selAvail()) {
            undoSymbolCompletion(caretX()-1);
        }
        return;
    }

    QString t = event->text();
    if (t.isEmpty())
        return;

    if (activeSelectionMode()==QSynedit::SelectionMode::Column)
        return;

    QChar ch = t[0];
    if (isIdentChar(ch)) {
        mLastIdCharPressed++;
        if (pSettings->codeCompletion().enabled()
                && pSettings->codeCompletion().showCompletionWhileInput() ) {
            if (mParser && mParser->isIncludeLine(lineText())
                    && mLastIdCharPressed==pSettings->codeCompletion().minCharRequired()) {
                // is a #include line
                commandProcessor(QSynedit::EditCommand::ecChar,ch,nullptr);
                showHeaderCompletion(false);
                handled=true;
                return;
            } else if (mLastIdCharPressed==pSettings->codeCompletion().minCharRequired()){
                QString lastWord = getPreviousWordAtPositionForSuggestion(caretXY());
                if (mParser && !lastWord.isEmpty()) {
                    if (CppTypeKeywords.contains(lastWord)) {
                        PStatement currentScope = mParser->findScopeStatement(mFilename,caretY());
                        while(currentScope && currentScope->kind==StatementKind::skBlock) {
                            currentScope = currentScope->parentScope.lock();
                        }
                        if (!currentScope || currentScope->kind == StatementKind::skNamespace) {
                            //may define a function
                            commandProcessor(QSynedit::EditCommand::ecChar,ch,nullptr);
                            showCompletion(lastWord,false,CodeCompletionType::FunctionWithoutDefinition);
                            handled=true;
                            return;
                        }
                        if (lastWord == "long" ||
                                lastWord == "short" ||
                                lastWord == "signed" ||
                                lastWord == "unsigned"
                                ) {
                            commandProcessor(QSynedit::EditCommand::ecChar,ch,nullptr);
                            showCompletion(lastWord,false, CodeCompletionType::TypeKeywordComplex);
                            handled=true;
                            return;
                        }


                        //last word is a type keyword, this is a var or param define, and dont show suggestion
                        return;
                    }
                    PStatement statement = mParser->findStatementOf(
                                mFilename,
                                lastWord,
                                caretY());
                    StatementKind kind = getKindOfStatement(statement);
                    if (kind == StatementKind::skClass
                            || kind == StatementKind::skEnumClassType
                            || kind == StatementKind::skEnumType
                            || kind == StatementKind::skTypedef) {

                        PStatement currentScope = mParser->findScopeStatement(mFilename,caretY());
                        while(currentScope && currentScope->kind==StatementKind::skBlock) {
                            currentScope = currentScope->parentScope.lock();
                        }
                        if (!currentScope || currentScope->kind == StatementKind::skNamespace) {
                            //may define a function
                            commandProcessor(QSynedit::EditCommand::ecChar,ch,nullptr);
                            showCompletion("",false,CodeCompletionType::FunctionWithoutDefinition);
                            handled=true;
                            return;
                        }

                        //last word is a typedef/class/struct, this is a var or param define, and dont show suggestion
                        return;
                    }
                }
                lastWord = getPreviousWordAtPositionForCompleteFunctionDefinition(caretXY());
                if (!lastWord.isEmpty()) {
                    PStatement currentScope = mParser->findScopeStatement(mFilename,caretY());
                    while(currentScope && currentScope->kind==StatementKind::skBlock) {
                        currentScope = currentScope->parentScope.lock();
                    }
                    if (!currentScope || currentScope->kind == StatementKind::skNamespace) {
                        //may define a function
                        commandProcessor(QSynedit::EditCommand::ecChar,ch,nullptr);
                        showCompletion("",false,CodeCompletionType::FunctionWithoutDefinition);
                        handled=true;
                        return;
                    }
                }
                commandProcessor(QSynedit::EditCommand::ecChar,ch,nullptr);
                showCompletion("",false,CodeCompletionType::Normal);
                handled=true;
                return;
            }
        }
    } else {
        //preprocessor ?
        if (mParser && (mLastIdCharPressed=0) && (ch=='#') && lineText().isEmpty()) {
            if (pSettings->codeCompletion().enabled()
                    && pSettings->codeCompletion().showCompletionWhileInput() ) {
                mLastIdCharPressed++;
                commandProcessor(QSynedit::EditCommand::ecChar,ch,nullptr);
                showCompletion("",false,CodeCompletionType::Normal);
                handled=true;
                return;
            }
        }
        //javadoc directive?
        if  (mParser && (mLastIdCharPressed=0) && (ch=='#') &&
              lineText().trimmed().startsWith('*')) {
            if (pSettings->codeCompletion().enabled()
                    && pSettings->codeCompletion().showCompletionWhileInput() ) {
                mLastIdCharPressed++;
                commandProcessor(QSynedit::EditCommand::ecChar,ch,nullptr);
                showCompletion("",false,CodeCompletionType::Normal);
                handled=true;
                return;
            }
        }
        mLastIdCharPressed = 0;
        switch (ch.unicode()) {
        case '"':
        case '\'':
        case ')':
        case '{':
        case '}':
        case '[':
        case ']':
        case '<':
        case '*':
            handled = handleSymbolCompletion(ch);
            return;
        case '(': {
            QChar nextCh = nextNonSpaceChar(caretY()-1,caretX()-1);
            if (!isIdentChar(nextCh) && nextCh!='('
                    && nextCh!='"' && nextCh!='\''  ){
                handled = handleSymbolCompletion(ch);
            }
            return;
        }
        case '>':
            if ((caretX() <= 1) || lineText().isEmpty()
                    ||  lineText()[caretX() - 2] != '-') {
                handled = handleSymbolCompletion(ch);
                return;
            }
            break;
        }
    }

    // Spawn code completion window if we are allowed to
    if (pSettings->codeCompletion().enabled())
        handled = handleCodeCompletion(ch);
}

void Editor::onGutterPaint(QPainter &painter, int aLine, int X, int Y)
{
    IconsManager::PPixmap icon;

    if (mActiveBreakpointLine == aLine) {
        icon = pIconsManager->getPixmap(IconsManager::GUTTER_ACTIVEBREAKPOINT);
    } else if (hasBreakpoint(aLine)) {
        icon = pIconsManager->getPixmap(IconsManager::GUTTER_BREAKPOINT);
    } else {
        PSyntaxIssueList lst = getSyntaxIssuesAtLine(aLine);
        if (lst) {
            bool hasError=false;
            for (const PSyntaxIssue& issue : *lst) {
                if (issue->issueType == CompileIssueType::Error) {
                    hasError = true;
                    break;;
                }
            }
            if (hasError) {
                icon = pIconsManager->getPixmap(IconsManager::GUTTER_SYNTAX_ERROR);
            } else {
                icon = pIconsManager->getPixmap(IconsManager::GUTTER_SYNTAX_WARNING);
            }
        } else if (hasBookmark(aLine)) {            
            icon = pIconsManager->getPixmap(IconsManager::GUTTER_BOOKMARK);
        }
    }
    if (icon) {
        X = 5;
        Y += (this->textHeight() - icon->height()) / 2;
        painter.drawPixmap(X,Y,*icon);
    }
}

void Editor::onGetEditingAreas(int Line, QSynedit::EditingAreaList &areaList)
{
    areaList.clear();
    if (mTabStopBegin>=0 && mTabStopY == Line) {
        QSynedit::PEditingArea p = make_shared<QSynedit::EditingArea>();
        p->type = QSynedit::EditingAreaType::eatRectangleBorder;
//        int spaceCount = leftSpaces(mLineBeforeTabStop);
//        int spaceBefore = mLineBeforeTabStop.length()-TrimLeft(mLineBeforeTabStop).length();
        p->beginX = mTabStopBegin;
        p->endX =  mTabStopEnd;
        p->color = highlighter()->stringAttribute()->foreground();
        areaList.append(p);
    }
    PSyntaxIssueList lst = getSyntaxIssuesAtLine(Line);
    if (lst) {
        for (const PSyntaxIssue& issue: *lst) {
            QSynedit::PEditingArea p=std::make_shared<QSynedit::EditingArea>();
            p->beginX = issue->col;
            p->endX = issue->endCol;
            if (issue->issueType == CompileIssueType::Error) {
                p->color = mSyntaxErrorColor;
            } else {
                p->color = mSyntaxWarningColor;
            }
            p->type = QSynedit::EditingAreaType::eatWaveUnderLine;
            areaList.append(p);
        }
    }
}

bool Editor::onGetSpecialLineColors(int Line, QColor &foreground, QColor &backgroundColor)
{
    if (Line == mActiveBreakpointLine &&
        mActiveBreakpointBackgroundColor.isValid()) {
        if (mActiveBreakpointForegroundColor.isValid())
            foreground = mActiveBreakpointForegroundColor;
        backgroundColor = mActiveBreakpointBackgroundColor;
        return true;
    } else if (hasBreakpoint(Line) && mBreakpointBackgroundColor.isValid()) {
        if (mBreakpointForegroundColor.isValid())
            foreground = mBreakpointForegroundColor;
        backgroundColor = mBreakpointBackgroundColor;
        return true;
    }
//    end else if Line = fErrorLine then begin
//      StrToThemeColor(tc,  devEditor.Syntax.Values[cErr]);
//      BG := tc.Background;
//      FG := tc.Foreground;
//      if (BG <> clNone) or (FG<>clNone) then
//        Special := TRUE;
//    end;
    return false;
}

void Editor::onPreparePaintHighlightToken(int line, int aChar, const QString &token, QSynedit::PHighlighterAttribute attr, QSynedit::FontStyles &style, QColor &foreground, QColor &background)
{
    if (token.isEmpty())
        return;

    if (mParser && highlighter()) {
        QString lineText = document()->getString(line-1);
        if (mParser->isIncludeLine(lineText)) {
            if (cursor() == Qt::PointingHandCursor) {
                QSynedit::BufferCoord p;
                if (pointToCharLine(mapFromGlobal(QCursor::pos()),p)) {
                    if (line==p.line){
                        int pos1=std::max(lineText.indexOf("<"),lineText.indexOf("\""));
                        int pos2=std::max(lineText.lastIndexOf(">"),lineText.lastIndexOf("\""));
                        pos1++;
                        pos2++;
                        if (pos1>0 && pos2>0 && pos1<aChar && aChar < pos2) {
                            style.setFlag(QSynedit::FontStyle::fsUnderline);
                        }
                    }
                }
            }
        } else if (mParser->enabled() && attr->tokenType() == QSynedit::TokenType::Identifier) {
            QSynedit::BufferCoord p{aChar,line};
    //        BufferCoord pBeginPos,pEndPos;
    //        QString s= getWordAtPosition(this,p, pBeginPos,pEndPos, WordPurpose::wpInformation);
    //        qDebug()<<s;
    //        PStatement statement = mParser->findStatementOf(mFilename,
    //          s , p.Line);
            QStringList expression = getExpressionAtPosition(p);
            PStatement statement = parser()->findStatementOf(
                        filename(),
                        expression,
                        p.line);
            StatementKind kind = getKindOfStatement(statement);
            if (kind == StatementKind::skUnknown) {
                QSynedit::BufferCoord pBeginPos,pEndPos;
                QString s= getWordAtPosition(this,p, pBeginPos,pEndPos, WordPurpose::wpInformation);
                if ((pEndPos.line>=1)
                  && (pEndPos.ch>=0)
                  && (pEndPos.ch+1 < document()->getString(pEndPos.line-1).length())
                  && (document()->getString(pEndPos.line-1)[pEndPos.ch+1] == '(')) {
                    kind = StatementKind::skFunction;
                } else {
                    kind = StatementKind::skVariable;
                }
            }
            PColorSchemeItem item = mStatementColors->value(kind,PColorSchemeItem());

            if (item) {
                foreground = item->foreground();
                //background = item->background();
                style.setFlag(QSynedit::FontStyle::fsBold,item->bold());
                style.setFlag(QSynedit::FontStyle::fsItalic,item->italic());
                style.setFlag(QSynedit::FontStyle::fsUnderline,item->underlined());
                style.setFlag(QSynedit::FontStyle::fsStrikeOut,item->strikeout());
            } else {
                foreground = highlighter()->identifierAttribute()->foreground();
            }
            if (cursor() == Qt::PointingHandCursor) {
                QSynedit::BufferCoord p;
                if (pointToCharLine(mapFromGlobal(QCursor::pos()),p)) {
                    if (line==p.line && (aChar<=p.ch && p.ch<aChar+token.length())) {
                        style.setFlag(QSynedit::FontStyle::fsUnderline);
                    }
                }
            }
        }
    }

    //selection
    if (highlighter() && attr) {
        if (attr->tokenType() == QSynedit::TokenType::Keyword) {
            if (CppTypeKeywords.contains(token)
                    ||
                    (
                        highlighter()->language()==QSynedit::HighlighterLanguage::Cpp
                        &&
                        ((QSynedit::CppHighlighter*)highlighter().get())->customTypeKeywords().contains(token)
                        )
                )
            {
                PColorSchemeItem item = mStatementColors->value(StatementKind::skKeywordType,PColorSchemeItem());

                if (item) {
                    if (item->foreground().isValid())
                        foreground = item->foreground();
                    if (item->background().isValid())
                        background = item->background();
                    style.setFlag(QSynedit::FontStyle::fsBold,item->bold());
                    style.setFlag(QSynedit::FontStyle::fsItalic,item->italic());
                    style.setFlag(QSynedit::FontStyle::fsUnderline,item->underlined());
                    style.setFlag(QSynedit::FontStyle::fsStrikeOut,item->strikeout());
                }
            }
        }
        if (((attr->tokenType() == QSynedit::TokenType::Identifier)
                || (attr->tokenType() == QSynedit::TokenType::Keyword)
                || (attr->tokenType() == QSynedit::TokenType::Preprocessor)
                )
            && (token == mCurrentHighlightedWord)) {
            if (mCurrentHighlighWordForeground.isValid())
                foreground = mCurrentHighlighWordForeground;
            if (mCurrentHighlighWordBackground.isValid())
                background = mCurrentHighlighWordBackground;
        } else if (!selAvail() && attr->name() == SYNS_AttrSymbol
                   && pSettings->editor().highlightMathingBraces()) {
            //        qDebug()<<line<<":"<<aChar<<" - "<<mHighlightCharPos1.Line<<":"<<mHighlightCharPos1.Char<<" - "<<mHighlightCharPos2.Line<<":"<<mHighlightCharPos2.Char;
            if ( (line == mHighlightCharPos1.line)
                    && (aChar == mHighlightCharPos1.ch)) {
                if (mCurrentHighlighWordForeground.isValid())
                    foreground = mCurrentHighlighWordForeground;
                if (mCurrentHighlighWordBackground.isValid())
                    background = mCurrentHighlighWordBackground;
            }
            if ((line == mHighlightCharPos2.line)
                    && (aChar == mHighlightCharPos2.ch)) {
                if (mCurrentHighlighWordForeground.isValid())
                    foreground = mCurrentHighlighWordForeground;
                if (mCurrentHighlighWordBackground.isValid())
                    background = mCurrentHighlighWordBackground;
            }
        }
    } else {
        if (token == mCurrentHighlightedWord) {
            if (mCurrentHighlighWordForeground.isValid())
                foreground = mCurrentHighlighWordForeground;
            if (mCurrentHighlighWordBackground.isValid())
                background = mCurrentHighlighWordBackground;
        }
    }
}

bool Editor::event(QEvent *event)
{
    if ((event->type() == QEvent::HoverEnter || event->type() == QEvent::HoverMove)
            && qApp->mouseButtons() == Qt::NoButton
            && pSettings->editor().enableTooltips()
            && !pMainWindow->completionPopup()->isVisible()
            && !pMainWindow->functionTip()->isVisible()
            && !pMainWindow->headerCompletionPopup()->isVisible()) {
        if(mHoverModifiedLine!=-1) {
            invalidateLine(mHoverModifiedLine);
            mHoverModifiedLine=-1;
        }

        QHoverEvent *helpEvent = static_cast<QHoverEvent *>(event);
        QSynedit::BufferCoord p;
        TipType reason = getTipType(helpEvent->pos(),p);
        PSyntaxIssue pError;
        int line ;
        if (reason == TipType::Error) {
            pError = getSyntaxIssueAtPosition(p);
        } else if (pointToLine(helpEvent->pos(),line)) {
            //issue tips is prefered
            PSyntaxIssueList issues = getSyntaxIssuesAtLine(line);
            if (issues && !issues->isEmpty()) {
                reason = TipType::Error;
                pError = issues->front();
            }
        }

        // Get subject
        bool isIncludeLine = false;
        bool isIncludeNextLine = false;
        QSynedit::BufferCoord pBeginPos,pEndPos;
        QString s;
        QStringList expression;
        switch (reason) {
        case TipType::Preprocessor:
            // When hovering above a preprocessor line, determine if we want to show an include or a identifier hint
            if (mParser) {
                s = document()->getString(p.line - 1);
                isIncludeNextLine = mParser->isIncludeNextLine(s);
                if (!isIncludeNextLine)
                    isIncludeLine = mParser->isIncludeLine(s);
                if (!isIncludeNextLine &&!isIncludeLine)
                    s = wordAtRowCol(p);
            }
            break;
        case TipType::Identifier:
            if (pMainWindow->debugger()->executing() && !pMainWindow->debugger()->inferiorRunning())
                s = getWordAtPosition(this,p, pBeginPos,pEndPos, WordPurpose::wpEvaluation); // debugging
            else if (!mCompletionPopup->isVisible()
                     && !mHeaderCompletionPopup->isVisible()) {
                expression = getExpressionAtPosition(p);
                s = expression.join(""); // information during coding
            }
            break;
        case TipType::Selection:
            s = selText(); // when a selection is available, always only use that
            break;
        case TipType::Error:
            s = pError->token;
            break;
        case TipType::None:
            cancelHint();
            mCurrentWord = "";
            mCurrentTipType = TipType::None;
            event->ignore();
            return true;
        }

        s = s.trimmed();
        if ((s == mCurrentWord) && (mCurrentTipType == reason)) {
            if (mParser
                    && mParser->enabled()
                    && qApp->queryKeyboardModifiers() == Qt::ControlModifier) {
                if (!hasFocus())
                    activate();
                setCursor(Qt::PointingHandCursor);
            } else {
                updateMouseCursor();
            }
            if (pointToLine(helpEvent->pos(),line)) {
                invalidateLine(line);
                mHoverModifiedLine=line;
            }
            event->ignore();
            return true; // do NOT remove hint when subject stays the same
        }

        // Remove hint
        cancelHint();
        mCurrentWord = s;
        mCurrentTipType = reason;


        // Determine what to do with subject
        QString hint = "";
        switch (reason) {
        case TipType::Preprocessor:
            if (isIncludeNextLine || isIncludeLine) {
                if (pSettings->editor().enableHeaderToolTips())
                    hint = getFileHint(s, isIncludeNextLine);
            } else if (//devEditor.ParserHints and
                     !mCompletionPopup->isVisible()
                     && !mHeaderCompletionPopup->isVisible()) {
                if (pSettings->editor().enableIdentifierToolTips())
                    hint = getParserHint(QStringList(),s,p.line);
            }
            break;
        case TipType::Identifier:
        case TipType::Selection:
            if (!mCompletionPopup->isVisible()
                    && !mHeaderCompletionPopup->isVisible()) {
                if (pMainWindow->debugger()->executing()
                        && (pSettings->editor().enableDebugTooltips())) {
                    showDebugHint(s,p.line);
                } else if (pSettings->editor().enableIdentifierToolTips()) { //if devEditor.ParserHints {
                    hint = getParserHint(expression, s, p.line);
                }
            }
            break;
        case TipType::Error:
            if (pSettings->editor().enableIssueToolTips())
                hint = getErrorHint(pError);
            break;
        default:
            break;
        }
//        qDebug()<<"hint:"<<hint;
        if (!hint.isEmpty()) {
            //            QApplication* app = dynamic_cast<QApplication *>(QApplication::instance());
            //            if (app->keyboardModifiers().testFlag(Qt::ControlModifier)) {
            if (mParser
                    && mParser->enabled()
                    && qApp->queryKeyboardModifiers() == Qt::ControlModifier) {
                if (!hasFocus())
                    activate();
                setCursor(Qt::PointingHandCursor);
            } else if (cursor() == Qt::PointingHandCursor) {
                updateMouseCursor();
            }
            if (pointToLine(helpEvent->pos(),line)) {
                invalidateLine(line);
                mHoverModifiedLine=line;
            }
            if (pMainWindow->functionTip()->isVisible()) {
                pMainWindow->functionTip()->hide();
            }
            QToolTip::showText(mapToGlobal(helpEvent->pos()),hint,this);
            event->ignore();
        } else {
            updateMouseCursor();
            event->ignore();
        }
        return true;
    } else if (event->type() == QEvent::HoverLeave) {
        cancelHint();
        return true;
    } else if (event->type() == QEvent::KeyPress || event->type() == QEvent::KeyRelease ) {
        if (!mCurrentWord.isEmpty()) {
            QKeyEvent* keyEvent = dynamic_cast<QKeyEvent*>(event);
            if (keyEvent->key() == Qt::Key_Control) {
                QApplication* app = dynamic_cast<QApplication *>(QApplication::instance());
                //postEvent takes the owner ship
                QHoverEvent* hoverEvent=new QHoverEvent(QEvent::HoverMove,
                                                        mapFromGlobal(QCursor::pos()),
                                                        mapFromGlobal(QCursor::pos()),
                                                        Qt::ControlModifier
                                                        );
                app->postEvent(this,hoverEvent);
            }
        }
    }
    return SynEdit::event(event);
}

void Editor::mouseReleaseEvent(QMouseEvent *event)
{
    if (event->button() | Qt::LeftButton) {
        mLastIdCharPressed = 0;
    }

    // if ctrl+clicked
    if ((cursor() == Qt::PointingHandCursor) && (event->modifiers() == Qt::ControlModifier)
            && (event->button() == Qt::LeftButton)) {

        QSynedit::BufferCoord p;
        if (mParser && pointToCharLine(event->pos(),p)) {
            QString s = document()->getString(p.line - 1);
            if (mParser->isIncludeNextLine(s)) {
                QString filename = mParser->getHeaderFileName(mFilename,s, true);
                pMainWindow->openFile(filename);
                return;
            } if (mParser->isIncludeLine(s)) {
                QString filename = mParser->getHeaderFileName(mFilename,s);
                pMainWindow->openFile(filename);
                return;
            } else if (mParser->enabled()) {
                gotoDefinition(p);
                return;
            }
        }
    }
    QSynedit::SynEdit::mouseReleaseEvent(event);
}

void Editor::inputMethodEvent(QInputMethodEvent *event)
{
    QSynedit::SynEdit::inputMethodEvent(event);
    QString s = event->commitString();
    if (s.isEmpty())
        return;
    if (pMainWindow->completionPopup()->isVisible()) {
        onCompletionInputMethod(event);
        return;
    } else {
        mLastIdCharPressed+=s.length();
        if (pSettings->codeCompletion().enabled()
                && pSettings->codeCompletion().showCompletionWhileInput() ) {
            if (mLastIdCharPressed>=pSettings->codeCompletion().minCharRequired()) {
                QString lastWord = getPreviousWordAtPositionForSuggestion(caretXY());
                if (!lastWord.isEmpty()) {
                    if (CppTypeKeywords.contains(lastWord)) {
                        return;
                    }
                    PStatement statement = mParser->findStatementOf(
                                mFilename,
                                lastWord,
                                caretY());
                    StatementKind kind = getKindOfStatement(statement);
                    if (kind == StatementKind::skClass
                            || kind == StatementKind::skEnumClassType
                            || kind == StatementKind::skEnumType
                            || kind == StatementKind::skTypedef) {
                        //last word is a typedef/class/struct, this is a var or param define, and dont show suggestion
  //                      if devEditor.UseTabnine then
  //                        ShowTabnineCompletion;
                        return;
                    }
                }
                showCompletion("",false,CodeCompletionType::Normal);
                return;
            }
        }
    }
}

void Editor::closeEvent(QCloseEvent *)
{
    if (mHeaderCompletionPopup)
        mHeaderCompletionPopup->hide();
    if (mCompletionPopup)
        mCompletionPopup->hide();
    if (pMainWindow->functionTip())
        pMainWindow->functionTip()->hide();
    if (mParentPageControl) {
        pMainWindow->updateForEncodingInfo(true);
        pMainWindow->updateStatusbarForLineCol(true);
        pMainWindow->updateForStatusbarModeInfo(true);
    }
}

void Editor::showEvent(QShowEvent */*event*/)
{
//    if (pSettings->codeCompletion().clearWhenEditorHidden()
//            && !inProject()) {
////        initParser();
//    }
    if (mParser && !pMainWindow->isClosingAll()
            && !pMainWindow->isQuitting()
            && !mParser->isFileParsed(mFilename)
            ) {
        connect(mParser.get(),
                &CppParser::onEndParsing,
                this,
                &QSynedit::SynEdit::invalidate);
        reparse(false);
    }
    if (mParentPageControl) {
        pMainWindow->debugger()->setIsForProject(inProject());
        pMainWindow->bookmarkModel()->setIsForProject(inProject());
        pMainWindow->todoModel()->setIsForProject(inProject());
    }

    if (!pMainWindow->isClosingAll()
                && !pMainWindow->isQuitting()) {
        if (!inProject() || !pMainWindow->closingProject()) {
            checkSyntaxInBack();
            reparseTodo();
        }
    }
    if (mParentPageControl) {
        pMainWindow->updateClassBrowserForEditor(this);
        pMainWindow->updateAppTitle(this);
        pMainWindow->updateEditorActions(this);
        pMainWindow->updateForEncodingInfo(this);
        pMainWindow->updateStatusbarForLineCol(this);
        pMainWindow->updateForStatusbarModeInfo(this);
    }
    if (inProject() && !pMainWindow->closingProject()) {
        pMainWindow->setProjectCurrentFile(mFilename);
    }

    setHideTime(QDateTime::currentDateTime());
}

void Editor::hideEvent(QHideEvent */*event*/)
{
    if (pSettings->codeCompletion().clearWhenEditorHidden()
            && !inProject() && mParser
            && !pMainWindow->isMinimized()) {
        //recreate a parser, to totally clean memories the parser uses;
        resetCppParser(mParser);
    }
    if (mParser) {
        disconnect(mParser.get(),
                &CppParser::onEndParsing,
                this,
                &QSynedit::SynEdit::invalidate);
    }
    pMainWindow->updateForEncodingInfo(nullptr);
    pMainWindow->updateStatusbarForLineCol(nullptr);
    pMainWindow->updateForStatusbarModeInfo(nullptr);

    setHideTime(QDateTime::currentDateTime());
}

void Editor::resizeEvent(QResizeEvent *event)
{
    QSynedit::SynEdit::resizeEvent(event);
    pMainWindow->functionTip()->hide();
}

void Editor::copyToClipboard()
{
    if (pSettings->editor().copySizeLimit()) {
        int startLine = blockBegin().line;
        int endLine = blockEnd().line;
        if ((endLine-startLine+1) > pSettings->editor().copyLineLimits()) {
            QMessageBox::critical(pMainWindow,tr("Error"),
                                     tr("The text to be copied exceeds count limit!"));
            return;
        }
        if ((selText().length()) > pSettings->editor().copyCharLimits() * 1000) {
            QMessageBox::critical(pMainWindow,tr("Error"),
                                     tr("The text to be copied exceeds character limit!"));
            return;
        }
    }
    switch(pSettings->editor().copyWithFormatAs()) {
    case 1: //HTML
        copyAsHTML();
        break;;
    default:
        QSynedit::SynEdit::copyToClipboard();
    }
}

void Editor::cutToClipboard()
{
    if (pSettings->editor().copySizeLimit()) {
        int startLine = blockBegin().line;
        int endLine = blockEnd().line;
        if ((endLine-startLine+1) > pSettings->editor().copyLineLimits()) {
            QMessageBox::critical(pMainWindow,tr("Error"),
                                     tr("The text to be cut exceeds count limit!"));
            return;
        }
        if ((selText().length()) > pSettings->editor().copyCharLimits() * 1000) {
            QMessageBox::critical(pMainWindow,tr("Error"),
                                     tr("The text to be cut exceeds character limit!"));
            return;
        }
    }
    QSynedit::SynEdit::cutToClipboard();
}

void Editor::copyAsHTML()
{
    if (!selAvail())
        return;
    QSynedit::SynHTMLExporter exporter(tabWidth(), pCharsetInfoManager->getDefaultSystemEncoding());

    exporter.setTitle(QFileInfo(mFilename).fileName());
    exporter.setExportAsText(false);
    exporter.setUseBackground(pSettings->editor().copyHTMLUseBackground());
    exporter.setFont(font());
    QSynedit::PHighlighter hl = highlighter();
    if (!pSettings->editor().copyHTMLUseEditorColor()) {
        hl = highlighterManager.copyHighlighter(highlighter());
        highlighterManager.applyColorScheme(hl,pSettings->editor().copyHTMLColorScheme());
    }
    exporter.setHighlighter(hl);
    exporter.setOnFormatToken(std::bind(&Editor::onExportedFormatToken,
                                        this,
                                        std::placeholders::_1,
                                        std::placeholders::_2,
                                        std::placeholders::_3,
                                        std::placeholders::_4,
                                        std::placeholders::_5
                                        ));
    exporter.setCreateHTMLFragment(true);

    exporter.ExportRange(document(),blockBegin(),blockEnd());

    //clipboard takes the owner ship
    QMimeData * mimeData = new QMimeData;

    //sethtml will convert buffer to QString , which will cause encoding trouble
    mimeData->setData(exporter.clipboardFormat(),exporter.buffer());
    mimeData->setText(selText());

    QGuiApplication::clipboard()->clear();
    QGuiApplication::clipboard()->setMimeData(mimeData);
}

void Editor::setCaretPosition(int line, int aChar)
{
    this->uncollapseAroundLine(line);
    this->setCaretXYCentered(QSynedit::BufferCoord{aChar,line});
}

void Editor::setCaretPositionAndActivate(int line, int aChar)
{
    this->uncollapseAroundLine(line);
    if (!this->hasFocus())
        this->activate();
    this->setCaretXYCentered(QSynedit::BufferCoord{aChar,line});
}

void Editor::addSyntaxIssues(int line, int startChar, int endChar, CompileIssueType errorType, const QString &hint)
{
    PSyntaxIssue pError;
    QSynedit::BufferCoord p;
    QString token;
    int start;
    QSynedit::PHighlighterAttribute attr;
    PSyntaxIssueList lst;
    if ((line<1) || (line>document()->count()))
        return;
    pError = std::make_shared<SyntaxIssue>();
    p.ch = startChar;
    p.line = line;
    if (startChar >= document()->getString(line-1).length()) {
        start = 1;
        token = document()->getString(line-1);
    } else if (endChar < 1) {
        if (!getHighlighterAttriAtRowColEx(p,token,start,attr))
            return;
    } else {
        start = startChar;
        token = document()->getString(line-1).mid(start-1,endChar-startChar);
    }
    pError->startChar = start;
    pError->endChar = start + token.length();
//    pError->col = charToColumn(line,pError->startChar);
//    pError->endCol = charToColumn(line,pError->endChar);
    pError->col = pError->startChar;
    pError->endCol = pError->endChar;
    pError->hint = hint;
    pError->token = token;
    pError->issueType = errorType;
    if (mSyntaxIssues.contains(line)) {
        lst = mSyntaxIssues[line];
    } else {
        lst = std::make_shared<SyntaxIssueList>();
        mSyntaxIssues[line] = lst;
    }
    lst->append(pError);
}

void Editor::clearSyntaxIssues()
{
    mSyntaxIssues.clear();
}

void Editor::gotoNextSyntaxIssue()
{
    auto iter = mSyntaxIssues.find(caretY());
    if (iter==mSyntaxIssues.end())
        return;
    iter++;
    if (iter==mSyntaxIssues.end())
        return;
    QSynedit::BufferCoord p;
    p.ch = (*iter)->at(0)->startChar;
    p.line = iter.key();
    setCaretXY(p);
}

void Editor::gotoPrevSyntaxIssue()
{
    auto iter = mSyntaxIssues.find(caretY());
    if (iter==mSyntaxIssues.end())
        return;
    if (iter==mSyntaxIssues.begin())
        return;
    iter--;
    QSynedit::BufferCoord p;
    p.ch = (*iter)->at(0)->startChar;
    p.line = iter.key();
    setCaretXY(p);

}

bool Editor::hasNextSyntaxIssue() const
{
    auto iter = mSyntaxIssues.find(caretY());
    if (iter==mSyntaxIssues.end())
        return false;
    iter++;
    if (iter==mSyntaxIssues.end())
        return false;
    return true;
}

bool Editor::hasPrevSyntaxIssue() const
{
    auto iter = mSyntaxIssues.find(caretY());
    if (iter==mSyntaxIssues.end())
        return true;
    if (iter==mSyntaxIssues.begin())
        return true;
    return false;
}

Editor::PSyntaxIssueList Editor::getSyntaxIssuesAtLine(int line)
{
    if (mSyntaxIssues.contains(line))
        return mSyntaxIssues[line];
    return PSyntaxIssueList();
}

Editor::PSyntaxIssue Editor::getSyntaxIssueAtPosition(const QSynedit::BufferCoord &pos)
{
    PSyntaxIssueList lst = getSyntaxIssuesAtLine(pos.line);
    if (!lst)
        return PSyntaxIssue();
    foreach (const PSyntaxIssue& issue, *lst) {
        if (issue->startChar<=pos.ch && pos.ch<=issue->endChar)
            return issue;
    }
    return PSyntaxIssue();
}

void Editor::onStatusChanged(QSynedit::StatusChanges changes)
{
    if ((!changes.testFlag(QSynedit::StatusChange::scReadOnly)
            && !changes.testFlag(QSynedit::StatusChange::scInsertMode)
            && (document()->count()!=mLineCount)
            && (document()->count()!=0) && ((mLineCount>0) || (document()->count()>1)))
            ||
        (mCurrentLineModified
            && !changes.testFlag(QSynedit::StatusChange::scReadOnly)
            && changes.testFlag(QSynedit::StatusChange::scCaretY))) {
        mCurrentLineModified = false;
        if (!changes.testFlag(QSynedit::StatusChange::scOpenFile)) {
            reparse(false);
            if (pSettings->editor().syntaxCheckWhenLineChanged())
                checkSyntaxInBack();
            reparseTodo();
        }
//        if (pSettings->codeCompletion().clearWhenEditorHidden()
//                && changes.testFlag(SynStatusChange::scOpenFile)) {
//        } else{
//            reparse();
//        }
    }
    mLineCount = document()->count();
    if (changes.testFlag(QSynedit::scModifyChanged)) {
        updateCaption();
    }
    if (changes.testFlag(QSynedit::scModified)) {
        mCurrentLineModified = true;
        if (mParentPageControl)
            mCanAutoSave = true;
    }

    if (changes.testFlag(QSynedit::StatusChange::scCaretX)
            || changes.testFlag(QSynedit::StatusChange::scCaretY)) {
        if (mTabStopBegin >=0) {
            if (mTabStopY==caretY()) {
                if (mLineAfterTabStop.isEmpty()) {
                    if (lineText().startsWith(mLineBeforeTabStop))
                        mTabStopBegin = mLineBeforeTabStop.length()+1;
                    mTabStopEnd = lineText().length()+1;
                } else {
                    if (lineText().startsWith(mLineBeforeTabStop)
                        && lineText().endsWith(mLineAfterTabStop))
                        mTabStopBegin = mLineBeforeTabStop.length()+1;
                    mTabStopEnd = lineText().length()
                            - mLineAfterTabStop.length()+1;
                }
                mXOffsetSince = mTabStopEnd - caretX();
                if (caretX() < mTabStopBegin ||
                        caretX() >  (mTabStopEnd+1)) {
                    mTabStopBegin = -1;
                }
            } else {
                if (mTabStopBegin>=0) {
                    invalidateLine(mTabStopY);
                    mTabStopBegin = -1;
                    clearUserCodeInTabStops();
                }
            }
        } else if (!selAvail() && highlighter() && pSettings->editor().highlightMathingBraces()){
            invalidateLine(mHighlightCharPos1.line);
            invalidateLine(mHighlightCharPos2.line);
            mHighlightCharPos1 = QSynedit::BufferCoord{0,0};
            mHighlightCharPos2 = QSynedit::BufferCoord{0,0};
            // Is there a bracket char before us?
            int lineLength = lineText().length();
            int ch = caretX() - 2;
            QSynedit::BufferCoord coord{0,0};
            if (ch>=0 && ch<lineLength &&  isBraceChar(lineText()[ch]) ) {
                coord.ch = ch+1;
                coord.line = caretY();
            }
            //or after us?
            ch = caretX()-1;
            if (ch>=0 && ch<lineLength &&  isBraceChar(lineText()[ch]) ) {
                coord.ch = ch+1;
                coord.line = caretY();
            }
            QSynedit::PHighlighterAttribute attr;
            QString token;
            if (getHighlighterAttriAtRowCol(coord,token,attr)
                    && attr->tokenType() == QSynedit::TokenType::Operator) {
                QSynedit::BufferCoord complementCharPos = getMatchingBracketEx(coord);
                if (!foldHidesLine(coord.line)
                        && !foldHidesLine(complementCharPos.line)) {
                    mHighlightCharPos1 = coord;
                    mHighlightCharPos2 = complementCharPos;
                    invalidateLine(mHighlightCharPos1.line);
                    invalidateLine(mHighlightCharPos2.line);
                }
            }

        }
    }

    // scSelection includes anything caret related
    if (changes.testFlag(QSynedit::StatusChange::scSelection)) {
        if (!selAvail() && pSettings->editor().highlightCurrentWord()) {
            mCurrentHighlightedWord = wordAtCursor();
        } else if (selAvail() && blockBegin() == wordStart()
                   && blockEnd() == wordEnd()){
            mCurrentHighlightedWord = selText();
        } else {
            mCurrentHighlightedWord = "";
        }

        if (mOldHighlightedWord != mCurrentHighlightedWord) {
            invalidate();
            mOldHighlightedWord = mCurrentHighlightedWord;
        }
        pMainWindow->updateStatusbarForLineCol();

        // Update the function tip
        if (pSettings->editor().showFunctionTips()) {
            updateFunctionTip(false);
            mFunctionTipTimer.stop();
            mFunctionTipTimer.start(500);
//              updateFunctionTip();
        }
    }



    if (changes.testFlag(QSynedit::scInsertMode) | changes.testFlag(QSynedit::scReadOnly))
        pMainWindow->updateForStatusbarModeInfo();

    pMainWindow->updateEditorActions();

    if (changes.testFlag(QSynedit::StatusChange::scCaretY) && mParentPageControl) {
        pMainWindow->caretList().addCaret(this,caretY(),caretX());
        pMainWindow->updateCaretActions();
    }
}

void Editor::onGutterClicked(Qt::MouseButton button, int , int , int line)
{
    if (button == Qt::LeftButton) {
        toggleBreakpoint(line);
    }
    mGutterClickedLine = line;
}

void Editor::onTipEvalValueReady(const QString& value)
{
    if (mCurrentWord == mCurrentDebugTipWord) {
        QString newValue;
        if (value.length()>100) {
            newValue = value.left(100) + "...";
        } else {
            newValue = value;
        }
        QToolTip::showText(QCursor::pos(), mCurrentDebugTipWord + " = " + newValue, this);
    }
    disconnect(pMainWindow->debugger(), &Debugger::evalValueReady,
               this, &Editor::onTipEvalValueReady);
}

void Editor::onLinesDeleted(int first, int count)
{
    pMainWindow->caretList().linesDeleted(this,first,count);
    pMainWindow->debugger()->breakpointModel()->onFileDeleteLines(mFilename,first,count,inProject());
    pMainWindow->bookmarkModel()->onFileDeleteLines(mFilename,first,count, inProject());
    resetBreakpoints();
    resetBookmarks();
    if (!pSettings->editor().syntaxCheckWhenLineChanged()) {
        //todo: update syntax issues
    }
}

void Editor::onLinesInserted(int first, int count)
{
    pMainWindow->caretList().linesInserted(this,first,count);
    pMainWindow->debugger()->breakpointModel()->onFileInsertLines(mFilename,first,count, inProject());
    pMainWindow->bookmarkModel()->onFileInsertLines(mFilename,first,count, inProject());
    resetBreakpoints();
    resetBookmarks();
    if (!pSettings->editor().syntaxCheckWhenLineChanged()) {
        //todo: update syntax issues
    }
}

void Editor::onFunctionTipsTimer()
{
    mFunctionTipTimer.stop();
    updateFunctionTip(true);
}

bool Editor::isBraceChar(QChar ch)
{
    switch( ch.unicode()) {
    case '{':
    case '}':
    case '[':
    case ']':
    case '(':
    case ')':
        return true;
    default:
        return false;
    }
}

bool Editor::shouldOpenInReadonly()
{
    if (mProject && mProject->findUnit(mFilename))
        return false;
    return pSettings->editor().readOnlySytemHeader()
                && mParser && (mParser->isSystemHeaderFile(mFilename) || mParser->isProjectHeaderFile(mFilename));
}

void Editor::resetBookmarks()
{
    mBookmarkLines=pMainWindow->bookmarkModel()->bookmarksInFile(mFilename,inProject());
    invalidate();
}

void Editor::resetBreakpoints()
{
    mBreakpointLines.clear();
    foreach (const PBreakpoint& breakpoint,
             pMainWindow->debugger()->breakpointModel()->breakpoints(inProject())) {
        if (breakpoint->filename == mFilename) {
            mBreakpointLines.insert(breakpoint->line);
        }
    }
    invalidate();
}

bool Editor::notParsed()
{
    if (!mParser)
        return true;
    return mParser->findFileIncludes(mFilename)==nullptr;
}

void Editor::insertLine()
{
    commandProcessor(QSynedit::EditCommand::ecInsertLine,QChar(),nullptr);
}

void Editor::deleteWord()
{
    commandProcessor(QSynedit::EditCommand::ecDeleteWord,QChar(),nullptr);
}

void Editor::deleteToWordStart()
{
    commandProcessor(QSynedit::EditCommand::ecDeleteWordStart,QChar(),nullptr);
}

void Editor::deleteToWordEnd()
{
    commandProcessor(QSynedit::EditCommand::ecDeleteWordEnd,QChar(),nullptr);
}

void Editor::deleteLine()
{
    commandProcessor(QSynedit::EditCommand::ecDeleteLine,QChar(),nullptr);
}

void Editor::duplicateLine()
{
    commandProcessor(QSynedit::EditCommand::ecDuplicateLine,QChar(),nullptr);
}

void Editor::deleteToEOL()
{
    commandProcessor(QSynedit::EditCommand::ecDeleteEOL,QChar(),nullptr);
}

void Editor::deleteToBOL()
{
    commandProcessor(QSynedit::EditCommand::ecDeleteBOL,QChar(),nullptr);
}

void Editor::gotoBlockStart()
{
    commandProcessor(QSynedit::EditCommand::ecBlockStart,QChar(),nullptr);
}

void Editor::gotoBlockEnd()
{
    commandProcessor(QSynedit::EditCommand::ecBlockEnd,QChar(),nullptr);
}

QStringList Editor::getOwnerExpressionAndMemberAtPositionForCompletion(
        const QSynedit::BufferCoord &pos,
        QString &memberOperator,
        QStringList &memberExpression)
{
    QStringList expression = getExpressionAtPosition(pos);
    return getOwnerExpressionAndMember(expression,memberOperator,memberExpression);
}

QStringList Editor::getExpressionAtPosition(
        const QSynedit::BufferCoord &pos)
{
    QStringList result;
    if (!highlighter())
        return result;
    int line = pos.line-1;
    int ch = pos.ch-1;
    int symbolMatchingLevel = 0;
    LastSymbolType lastSymbolType=LastSymbolType::None;
    QSynedit::PHighlighter highlighter;
    if (isNew())
        highlighter = highlighterManager.getCppHighlighter();
    else
        highlighter = highlighterManager.getHighlighter(mFilename);
    if (!highlighter)
        return result;
    while (true) {
        if (line>=document()->count() || line<0)
            break;
        QStringList tokens;
        if (line==0) {
            highlighter->resetState();
        } else {
            highlighter->setState(document()->ranges(line-1));
        }
        QString sLine = document()->getString(line);
        highlighter->setLine(sLine,line-1);
        while (!highlighter->eol()) {
            int start = highlighter->getTokenPos();
            QString token = highlighter->getToken();
            int endPos = start + token.length()-1;
            if (start>ch) {
                break;
            }
            QSynedit::PHighlighterAttribute attr = highlighter->getTokenAttribute();
            if ( (line == pos.line-1)
                 && (start<=ch) && (ch<=endPos)) {
                if (attr->tokenType() == QSynedit::TokenType::Comment
                        || attr->tokenType() == QSynedit::TokenType::String) {
                    return result;
                }
            }
            if (attr->tokenType() != QSynedit::TokenType::Comment
                    && attr->tokenType() != QSynedit::TokenType::Space){
                tokens.append(token);
            }
            highlighter->next();
        }
        for (int i=tokens.count()-1;i>=0;i--) {
            QString token = tokens[i];
            switch(lastSymbolType) {
            case LastSymbolType::ScopeResolutionOperator: //before '::'
                if (token==">") {
                    lastSymbolType=LastSymbolType::MatchingAngleQuotation;
                    symbolMatchingLevel=0;
                } else if (isIdentChar(token.front())) {
                    lastSymbolType=LastSymbolType::Identifier;
                } else
                    return result;
                break;
            case LastSymbolType::ObjectMemberOperator: //before '.'
            case LastSymbolType::PointerMemberOperator: //before '->'
            case LastSymbolType::PointerToMemberOfObjectOperator: //before '.*'
            case LastSymbolType::PointerToMemberOfPointerOperator: //before '->*'
                if (token == ")" ) {
                    lastSymbolType=LastSymbolType::MatchingParenthesis;
                    symbolMatchingLevel = 0;
                } else if (token == "]") {
                    lastSymbolType=LastSymbolType::MatchingBracket;
                    symbolMatchingLevel = 0;
                } else if (isIdentChar(token.front())) {
                    lastSymbolType=LastSymbolType::Identifier;
                } else
                    return result;
                break;
            case LastSymbolType::AsteriskSign: // before '*':
                if (token == '*') {

                } else
                    return result;
                break;
            case LastSymbolType::AmpersandSign: // before '&':
                return result;
                break;
            case LastSymbolType::ParenthesisMatched: //before '()'
//                if (token == ".") {
//                    lastSymbolType=LastSymbolType::ObjectMemberOperator;
//                } else if (token=="->") {
//                    lastSymbolType = LastSymbolType::PointerMemberOperator;
//                } else if (token == ".*") {
//                    lastSymbolType = LastSymbolType::PointerToMemberOfObjectOperator;
//                } else if (token == "->*"){
//                    lastSymbolType = LastSymbolType::PointerToMemberOfPointerOperator;
//                } else if (token==">") {
//                    lastSymbolType=LastSymbolType::MatchingAngleQuotation;
//                    symbolMatchingLevel=0;
//                } else
                if (token == ")" ) {
                    lastSymbolType=LastSymbolType::MatchingParenthesis;
                    symbolMatchingLevel = 0;
                } else if (token == "]") {
                    lastSymbolType=LastSymbolType::MatchingBracket;
                    symbolMatchingLevel = 0;
                } else if (token == "*") {
                    lastSymbolType=LastSymbolType::AsteriskSign;
                } else if (token == "&") {
                    lastSymbolType=LastSymbolType::AmpersandSign;
                } else if (isIdentChar(token.front())) {
                    lastSymbolType=LastSymbolType::Identifier;
                } else
                    return result;
                break;
            case LastSymbolType::BracketMatched: //before '[]'
                if (token == ")" ) {
                    lastSymbolType=LastSymbolType::MatchingParenthesis;
                    symbolMatchingLevel = 0;
                } else if (token == "]") {
                    lastSymbolType=LastSymbolType::MatchingBracket;
                    symbolMatchingLevel = 0;
                } else if (isIdentChar(token.front())) {
                    lastSymbolType=LastSymbolType::Identifier;
                } else
                    return result;
                break;
            case LastSymbolType::AngleQuotationMatched: //before '<>'
                if (isIdentChar(token.front())) {
                    lastSymbolType=LastSymbolType::Identifier;
                } else
                    return result;
                break;
            case LastSymbolType::None:
                if (token =="::") {
                    lastSymbolType=LastSymbolType::ScopeResolutionOperator;
                } else if (token == ".") {
                    lastSymbolType=LastSymbolType::ObjectMemberOperator;
                } else if (token=="->") {
                    lastSymbolType = LastSymbolType::PointerMemberOperator;
                } else if (token == ".*") {
                    lastSymbolType = LastSymbolType::PointerToMemberOfObjectOperator;
                } else if (token == "->*"){
                    lastSymbolType = LastSymbolType::PointerToMemberOfPointerOperator;
                } else if (token == ")" ) {
                    lastSymbolType=LastSymbolType::MatchingParenthesis;
                    symbolMatchingLevel = 0;
                } else if (token == "]") {
                    lastSymbolType=LastSymbolType::MatchingBracket;
                    symbolMatchingLevel = 0;
                } else if (isIdentChar(token.front())) {
                    lastSymbolType=LastSymbolType::Identifier;
                } else
                    return result;
                break;
            case LastSymbolType::TildeSign:
                if (token =="::") {
                    lastSymbolType=LastSymbolType::ScopeResolutionOperator;
                } else {
                    // "~" must appear after "::"
                    result.pop_front();
                    return result;
                }
                break;;
            case LastSymbolType::Identifier:
                if (token =="::") {
                    lastSymbolType=LastSymbolType::ScopeResolutionOperator;
                } else if (token == ".") {
                    lastSymbolType=LastSymbolType::ObjectMemberOperator;
                } else if (token=="->") {
                    lastSymbolType = LastSymbolType::PointerMemberOperator;
                } else if (token == ".*") {
                    lastSymbolType = LastSymbolType::PointerToMemberOfObjectOperator;
                } else if (token == "->*"){
                    lastSymbolType = LastSymbolType::PointerToMemberOfPointerOperator;
                } else if (token == "~") {
                    lastSymbolType=LastSymbolType::TildeSign;
                } else if (token == "*") {
                    lastSymbolType=LastSymbolType::AsteriskSign;
                } else if (token == "&") {
                    lastSymbolType=LastSymbolType::AmpersandSign;
                } else
                    return result; // stop matching;
                break;
            case LastSymbolType::MatchingParenthesis:
                if (token=="(") {
                    if (symbolMatchingLevel==0) {
                        lastSymbolType=LastSymbolType::ParenthesisMatched;
                    } else {
                        symbolMatchingLevel--;
                    }
                } else if (token==")") {
                    symbolMatchingLevel++;
                }
                break;
            case LastSymbolType::MatchingBracket:
                if (token=="[") {
                    if (symbolMatchingLevel==0) {
                        lastSymbolType=LastSymbolType::BracketMatched;
                    } else {
                        symbolMatchingLevel--;
                    }
                } else if (token=="]") {
                    symbolMatchingLevel++;
                }
                break;
            case LastSymbolType::MatchingAngleQuotation:
                if (token=="<") {
                    if (symbolMatchingLevel==0) {
                        lastSymbolType=LastSymbolType::MatchingAngleQuotation;
                    } else {
                        symbolMatchingLevel--;
                    }
                } else if (token==">") {
                    symbolMatchingLevel++;
                }
                break;
            }
            result.push_front(token);
        }

        line--;
        if (line>=0)
            ch = document()->getString(line).length()+1;
    }
    return result;
}

QString Editor::getWordForCompletionSearch(const QSynedit::BufferCoord &pos,bool permitTilde)
{
    QString result = "";
    QString s;

    s = document()->getString(pos.line - 1);
    int len = s.length();

    int wordBegin = pos.ch - 1 - 1; //BufferCoord::Char starts with 1
    int wordEnd = pos.ch - 1 - 1;

    while ((wordBegin >= 0) && (wordBegin<len)) {
        if (isIdentChar(s[wordBegin])) {
            wordBegin--;
        } else if (permitTilde && s[wordBegin] == '~') { // allow destructor signs
            wordBegin--;
        } else
            break;
    }
    // Get end result
    return s.mid(wordBegin+1, wordEnd - wordBegin);
}

QChar Editor::getCurrentChar()
{
    if (lineText().length()<caretX())
        return QChar();
    else
        return lineText().at(caretX()-1);
}

bool Editor::handleSymbolCompletion(QChar key)
{
    if (!pSettings->editor().completeSymbols())
        return false;
    if (!insertMode())
        return false;

    //todo: better methods to detect current caret type
    if (highlighter()) {
        if (caretX() <= 1) {
            if (caretY()>1) {
                if (highlighter()->isLastLineCommentNotFinished(document()->ranges(caretY() - 2).state))
                    return false;
                if (highlighter()->isLastLineStringNotFinished(document()->ranges(caretY() - 2).state)
                        && (key!='\"') && (key!='\''))
                    return false;
            }
        } else {
            QSynedit::BufferCoord  HighlightPos = QSynedit::BufferCoord{caretX()-1, caretY()};
            // Check if that line is highlighted as  comment
            QSynedit::PHighlighterAttribute attr;
            QString token;
            bool tokenFinished;
            if (getHighlighterAttriAtRowCol(HighlightPos, token, tokenFinished, attr)) {
                if ((attr->tokenType() == QSynedit::TokenType::Comment) && (!tokenFinished))
                    return false;
                if ((attr->tokenType() == QSynedit::TokenType::String) && (!tokenFinished)
                        && (key!='\'') && (key!='\"') && (key!='(') && (key!=')'))
                    return false;
                if (( key=='<' || key =='>') && (mParser && !mParser->isIncludeLine(lineText())))
                    return false;
                if ((key == '\'') && (attr->name() == "SYNS_AttrNumber"))
                    return false;
            }
        }
    }

    // Check if that line is highlighted as string or character or comment
    //    if (Attr = fText.Highlighter.StringAttribute) or (Attr = fText.Highlighter.CommentAttribute) or SameStr(Attr.Name,
    //      'Character') then
    //      Exit;

    QuoteStatus status;
    switch(key.unicode()) {
    case '(':
        if (pSettings->editor().completeParenthese()) {
            return handleParentheseCompletion();
        }
        return false;
    case ')':
        if (selAvail())
            return false;
        if (pSettings->editor().completeParenthese() && pSettings->editor().overwriteSymbols()) {
            return handleParentheseSkip();
        }
        return false;
    case '[':
          if (pSettings->editor().completeBracket()) {
              return handleBracketCompletion();
          }
          return false;
    case ']':
        if (selAvail())
            return false;
        if (pSettings->editor().completeBracket() && pSettings->editor().overwriteSymbols()) {
            return handleBracketSkip();
        }
        return false;
    case '*':
        status = getQuoteStatus();
        if (pSettings->editor().completeComment() && (status == QuoteStatus::NotQuote)) {
            return handleMultilineCommentCompletion();
        }
        return false;
    case '{':
        if (pSettings->editor().completeBrace()) {
            return handleBraceCompletion();
        }
        return false;
    case '}':
        if (selAvail())
            return false;
        if (pSettings->editor().completeBrace() && pSettings->editor().overwriteSymbols()) {
            return handleBraceSkip();
        }
        return false;
    case '\'':
        if (pSettings->editor().completeSingleQuote()) {
            return handleSingleQuoteCompletion();
        }
        return false;
    case '\"':
        if (pSettings->editor().completeDoubleQuote()) {
            return handleDoubleQuoteCompletion();
        }
        return false;
    case '<':
        if (selAvail())
            return false;
        if (pSettings->editor().completeGlobalInclude()) { // #include <>
            return handleGlobalIncludeCompletion();
        }
        return false;
    case '>':
        if (selAvail())
            return false;
        if (pSettings->editor().completeGlobalInclude() && pSettings->editor().overwriteSymbols()) { // #include <>
            return handleGlobalIncludeSkip();
        }
        return false;
    }
    return false;
}

bool Editor::handleParentheseCompletion()
{
    QuoteStatus status = getQuoteStatus();
    if (status == QuoteStatus::RawString || status == QuoteStatus::NotQuote) {
        if (selAvail() && status == QuoteStatus::NotQuote) {
            QString text=selText();
            beginUpdate();
            beginUndoBlock();
            commandProcessor(QSynedit::EditCommand::ecChar,'(');
            setSelText(text);
            commandProcessor(QSynedit::EditCommand::ecChar,')');
            endUndoBlock();
            endUpdate();
        } else {
            beginUpdate();
            beginUndoBlock();
            commandProcessor(QSynedit::EditCommand::ecChar,'(');
            QSynedit::BufferCoord oldCaret = caretXY();
            commandProcessor(QSynedit::EditCommand::ecChar,')');
            setCaretXY(oldCaret);
            endUndoBlock();
            endUpdate();
        }
        return true;
    }
//    if (status == QuoteStatus::NotQuote) && FunctionTipAllowed then
    //        fFunctionTip.Activated := true;
    return false;
}

bool Editor::handleParentheseSkip()
{
      if (getCurrentChar() != ')')
          return false;
      QuoteStatus status = getQuoteStatus();
      if (status == QuoteStatus::RawStringNoEscape) {
          setCaretXY( QSynedit::BufferCoord{caretX() + 1, caretY()}); // skip over
          return true;
      }
      if (status != QuoteStatus::NotQuote)
          return false;

      if (document()->count()==0)
          return false;
      if (highlighter()) {
          QSynedit::HighlighterState lastLineState = document()->ranges(document()->count()-1);
          if (lastLineState.parenthesisLevel==0) {
              setCaretXY( QSynedit::BufferCoord{caretX() + 1, caretY()}); // skip over
              return true;
          }
      } else {
          QSynedit::BufferCoord pos = getMatchingBracket();
          if (pos.line != 0) {
              setCaretXY( QSynedit::BufferCoord{caretX() + 1, caretY()}); // skip over
              return true;
          }
      }
      return false;
}

bool Editor::handleBracketCompletion()
{
//    QuoteStatus status = getQuoteStatus();
//    if (status == QuoteStatus::RawString || status == QuoteStatus::NotQuote) {
    QuoteStatus status = getQuoteStatus();
    if (selAvail() && status == QuoteStatus::NotQuote) {
        QString text=selText();
        beginUpdate();
        beginUndoBlock();
        commandProcessor(QSynedit::EditCommand::ecChar,'[');
        setSelText(text);
        commandProcessor(QSynedit::EditCommand::ecChar,']');
        endUndoBlock();
        endUpdate();
    } else {
        beginUpdate();
        beginUndoBlock();
        commandProcessor(QSynedit::EditCommand::ecChar,'[');
        QSynedit::BufferCoord oldCaret = caretXY();
        commandProcessor(QSynedit::EditCommand::ecChar,']');
        setCaretXY(oldCaret);
        endUndoBlock();
        endUpdate();
    }
    return true;
        //    }
}

bool Editor::handleBracketSkip()
{
    if (getCurrentChar() != ']')
        return false;

    if (document()->count()==0)
        return false;
    if (highlighter()) {
        QSynedit::HighlighterState lastLineState = document()->ranges(document()->count()-1);
        if (lastLineState.bracketLevel==0) {
            setCaretXY( QSynedit::BufferCoord{caretX() + 1, caretY()}); // skip over
            return true;
        }
    } else {
        QSynedit::BufferCoord pos = getMatchingBracket();
        if (pos.line != 0) {
            setCaretXY( QSynedit::BufferCoord{caretX() + 1, caretY()}); // skip over
            return true;
        }
    }
    return false;
}

bool Editor::handleMultilineCommentCompletion()
{
    if ((caretX()-2>=0) && (caretX()-2 < lineText().length()) && (lineText()[caretX() - 2] == '/')) {
        QString text=selText();
        beginUpdate();
        beginUndoBlock();
        commandProcessor(QSynedit::EditCommand::ecChar,'*');
        QSynedit::BufferCoord oldCaret;
        if (text.isEmpty())
            oldCaret = caretXY();
        else
            setSelText(text);
        commandProcessor(QSynedit::EditCommand::ecChar,'*');
        commandProcessor(QSynedit::EditCommand::ecChar,'/');
        if (text.isEmpty())
            setCaretXY(oldCaret);
        endUndoBlock();
        endUpdate();
        return true;
    }
    return false;
}

bool Editor::handleBraceCompletion()
{
    QString s = lineText().trimmed();
    int i= caretY()-2;
    while ((s.isEmpty()) && (i>=0)) {
        s=document()->getString(i);
        i--;
    }
    QString text=selText();
    beginUpdate();
    beginUndoBlock();
    commandProcessor(QSynedit::EditCommand::ecChar,'{');
    QSynedit::BufferCoord oldCaret;
    if (text.isEmpty()) {
        oldCaret = caretXY();
    } else {
        commandProcessor(QSynedit::EditCommand::ecInsertLine);
        setSelText(text);
        commandProcessor(QSynedit::EditCommand::ecInsertLine);
    }
    commandProcessor(QSynedit::EditCommand::ecChar,'}');
    if (
        ( (s.startsWith("struct")
          || s.startsWith("class")
          || s.startsWith("union")
          || s.startsWith("typedef")
          || s.startsWith("public")
          || s.startsWith("private")
          || s.startsWith("enum") )
          && !s.contains(';')
        ) || s.endsWith('=')) {
        commandProcessor(QSynedit::EditCommand::ecChar,';');
    }
    if (text.isEmpty())
        setCaretXY(oldCaret);
    endUndoBlock();
    endUpdate();
    return true;
}

bool Editor::handleBraceSkip()
{
    if (getCurrentChar() != '}')
        return false;

    if (document()->count()==0)
        return false;
    if (highlighter()) {
        QSynedit::HighlighterState lastLineState = document()->ranges(document()->count()-1);
        if (lastLineState.braceLevel==0) {
            bool oldInsertMode = insertMode();
            setInsertMode(false); //set mode to overwrite
            commandProcessor(QSynedit::EditCommand::ecChar,'}');
            setInsertMode(oldInsertMode);
            return true;
        }
    } else {
        QSynedit::BufferCoord pos = getMatchingBracket();
        if (pos.line != 0) {
            bool oldInsertMode = insertMode();
            setInsertMode(false); //set mode to overwrite
            commandProcessor(QSynedit::EditCommand::ecChar,'}');
            setInsertMode(oldInsertMode);
            return true;
        }
    }
    return false;
}

bool Editor::handleSingleQuoteCompletion()
{
    QuoteStatus status = getQuoteStatus();
    QChar ch = getCurrentChar();
    if (ch == '\'') {
        if (status == QuoteStatus::SingleQuote && !selAvail()) {
            setCaretXY( QSynedit::BufferCoord{caretX() + 1, caretY()}); // skip over
            return true;
        }
    } else {
        if (status == QuoteStatus::NotQuote) {
            if (selAvail()) {
                QString text=selText();
                beginUpdate();
                beginUndoBlock();
                commandProcessor(QSynedit::EditCommand::ecChar,'\'');
                setSelText(text);
                commandProcessor(QSynedit::EditCommand::ecChar,'\'');
                endUndoBlock();
                endUpdate();
                return true;
            }
            if (ch == 0 || highlighter()->isWordBreakChar(ch) || highlighter()->isSpaceChar(ch)) {
                // insert ''
                beginUpdate();
                beginUndoBlock();
                commandProcessor(QSynedit::EditCommand::ecChar,'\'');
                QSynedit::BufferCoord oldCaret = caretXY();
                commandProcessor(QSynedit::EditCommand::ecChar,'\'');
                setCaretXY(oldCaret);
                endUndoBlock();
                endUpdate();
                return true;
            }
        }
    }
    return false;
}

bool Editor::handleDoubleQuoteCompletion()
{
    QuoteStatus status = getQuoteStatus();
    QChar ch = getCurrentChar();
    if (ch == '"') {
        if ((status == QuoteStatus::DoubleQuote || status == QuoteStatus::RawString)
            && !selAvail()) {
            setCaretXY( QSynedit::BufferCoord{caretX() + 1, caretY()}); // skip over
            return true;
        }
    } else {
        if (status == QuoteStatus::NotQuote) {
            if (selAvail()) {
                QString text=selText();
                beginUpdate();
                beginUndoBlock();
                commandProcessor(QSynedit::EditCommand::ecChar,'"');
                setSelText(text);
                commandProcessor(QSynedit::EditCommand::ecChar,'"');
                endUndoBlock();
                endUpdate();
                return true;
            }
            if ((ch == 0) || highlighter()->isWordBreakChar(ch) || highlighter()->isSpaceChar(ch)) {
                // insert ""
                beginUpdate();
                beginUndoBlock();
                commandProcessor(QSynedit::EditCommand::ecChar,'"');
                QSynedit::BufferCoord oldCaret = caretXY();
                commandProcessor(QSynedit::EditCommand::ecChar,'"');
                setCaretXY(oldCaret);
                endUndoBlock();
                endUpdate();
                return true;
            }
        }
    }
    return false;
}

bool Editor::handleGlobalIncludeCompletion()
{
    if (!lineText().startsWith('#'))
        return false;
    QString s= lineText().mid(1).trimmed();
    if (!s.startsWith("include"))  //it's not #include
        return false;
    beginUpdate();
    beginUndoBlock();
    commandProcessor(QSynedit::EditCommand::ecChar,'<');
    QSynedit::BufferCoord oldCaret = caretXY();
    commandProcessor(QSynedit::EditCommand::ecChar,'>');
    setCaretXY(oldCaret);
    endUpdate();
    endUndoBlock();
    return true;
}

bool Editor::handleGlobalIncludeSkip()
{
    if (getCurrentChar()!='>')
        return false;
    QString s= lineText().mid(1).trimmed();
    if (!s.startsWith("include"))  //it's not #include
        return false;
    QSynedit::BufferCoord pos = getMatchingBracket();
    if (pos.line != 0) {
        setCaretXY(QSynedit::BufferCoord{caretX() + 1, caretY()}); // skip over
        return true;
    }
    return false;
}

bool Editor::handleCodeCompletion(QChar key)
{
    if (!mCompletionPopup->isEnabled())
        return false;
    if (mParser) {
        switch(key.unicode()) {
        case '.':
            commandProcessor(QSynedit::EditCommand::ecChar, key);
            showCompletion("",false,CodeCompletionType::Normal);
            return true;
        case '>':
            commandProcessor(QSynedit::EditCommand::ecChar, key);
            if ((caretX() > 2) && (lineText().length() >= 2) &&
                    (lineText()[caretX() - 3] == '-'))
                showCompletion("",false,CodeCompletionType::Normal);
            return true;
        case ':':
            commandProcessor(QSynedit::EditCommand::ecChar,':',nullptr);
            //setSelText(key);
            if ((caretX() > 2) && (lineText().length() >= 2) &&
                    (lineText()[caretX() - 3] == ':'))
                showCompletion("",false,CodeCompletionType::Normal);
            return true;
        case '/':
        case '\\':
            commandProcessor(QSynedit::EditCommand::ecChar, key);
            if (mParser->isIncludeLine(lineText())) {
                showHeaderCompletion(false);
            }
            return true;
        default:
            return false;
        }
    }
    return false;
}

void Editor::initParser()
{
    if (pSettings->codeCompletion().shareParser()) {
        if (pSettings->codeCompletion().enabled()
            && (highlighter() && highlighter()->getClass() == QSynedit::HighlighterClass::CppHighlighter)
            ) {
            mParser = sharedParser(mUseCppSyntax?ParserLanguage::CPlusPlus:ParserLanguage::C);
        }
        return;
    }

    mParser = std::make_shared<CppParser>();
    if (mUseCppSyntax) {
        mParser->setLanguage(ParserLanguage::CPlusPlus);
    } else {
        mParser->setLanguage(ParserLanguage::C);
    }
    mParser->setOnGetFileStream(
                std::bind(
                    &EditorList::getContentFromOpenedEditor,pMainWindow->editorList(),
                    std::placeholders::_1, std::placeholders::_2));
    resetCppParser(mParser);
    mParser->setEnabled(
                pSettings->codeCompletion().enabled() &&
                (highlighter() && highlighter()->getClass() == QSynedit::HighlighterClass::CppHighlighter));
}

Editor::QuoteStatus Editor::getQuoteStatus()
{
    QuoteStatus Result = QuoteStatus::NotQuote;
    if (!highlighter())
        return Result;
    if ((caretY()>1) && highlighter()->isLastLineStringNotFinished(document()->ranges(caretY() - 2).state))
        Result = QuoteStatus::DoubleQuote;

    QString Line = document()->getString(caretY()-1);
    int posX = caretX()-1;
    if (posX >= Line.length()) {
        posX = Line.length()-1;
    }
    for (int i=0; i<posX;i++) {
        if (i+1<Line.length() && (Line[i] == 'R') && (Line[i+1] == '"') && (Result == QuoteStatus::NotQuote)) {
            Result = QuoteStatus::RawString;
            i++; // skip R
        } else if (Line[i] == '(') {
            switch(Result) {
            case QuoteStatus::RawString:
                Result=QuoteStatus::RawStringNoEscape;
                break;
            default:
                break;
            }
        } else if (Line[i] == ')') {
            switch(Result) {
            case QuoteStatus::RawStringNoEscape:
                Result=QuoteStatus::RawString;
                break;
            default:
                break;
            }
        } else if (Line[i] == '"') {
            switch(Result) {
            case QuoteStatus::NotQuote:
                Result = QuoteStatus::DoubleQuote;
                break;
            case QuoteStatus::SingleQuote:
                Result = QuoteStatus::SingleQuote;
                break;
            case QuoteStatus::SingleQuoteEscape:
                Result = QuoteStatus::SingleQuote;
                break;
            case QuoteStatus::DoubleQuote:
                Result = QuoteStatus::NotQuote;
                break;
            case QuoteStatus::DoubleQuoteEscape:
                Result = QuoteStatus::DoubleQuote;
                break;
            case QuoteStatus::RawString:
                Result=QuoteStatus::NotQuote;
                break;
            default:
                break;
            }
        } else if (Line[i] == '\'') {
            switch(Result) {
            case QuoteStatus::NotQuote:
                Result = QuoteStatus::SingleQuote;
                break;
            case QuoteStatus::SingleQuote:
                Result = QuoteStatus::NotQuote;
                break;
            case QuoteStatus::SingleQuoteEscape:
                Result = QuoteStatus::SingleQuote;
                break;
            case QuoteStatus::DoubleQuote:
                Result = QuoteStatus::DoubleQuote;
                break;
            case QuoteStatus::DoubleQuoteEscape:
                Result = QuoteStatus::DoubleQuote;
                break;
            default:
                break;
            }
        } else if (Line[i] == '\\') {
            switch(Result) {
            case QuoteStatus::NotQuote:
                Result = QuoteStatus::NotQuote;
                break;
            case QuoteStatus::SingleQuote:
                Result = QuoteStatus::SingleQuoteEscape;
                break;
            case QuoteStatus::SingleQuoteEscape:
                Result = QuoteStatus::SingleQuote;
                break;
            case QuoteStatus::DoubleQuote:
                Result = QuoteStatus::DoubleQuoteEscape;
                break;
            case QuoteStatus::DoubleQuoteEscape:
                Result = QuoteStatus::DoubleQuote;
                break;
            default:
                break;
            }
        } else {
            switch(Result) {
            case QuoteStatus::NotQuote:
                Result = QuoteStatus::NotQuote;
                break;
            case QuoteStatus::SingleQuote:
                Result = QuoteStatus::SingleQuote;
                break;
            case QuoteStatus::SingleQuoteEscape:
                Result = QuoteStatus::SingleQuote;
                break;
            case QuoteStatus::DoubleQuote:
                Result = QuoteStatus::DoubleQuote;
                break;
            case QuoteStatus::DoubleQuoteEscape:
                Result = QuoteStatus::DoubleQuote;
                break;
            default:
                break;
            }
        }
    }
    return Result;
}

void Editor::reparse(bool resetParser)
{
    if (!mParentPageControl)
        return;
    if (!pSettings->codeCompletion().enabled())
        return;
    if (!highlighter())
        return;
    if (highlighter()->language() != QSynedit::HighlighterLanguage::Cpp
             && highlighter()->language() != QSynedit::HighlighterLanguage::GLSL)
        return;
    if (!mParser)
        return;
    if (!mParser->enabled())
        return;
    //mParser->setEnabled(pSettings->codeCompletion().enabled());
    ParserLanguage language = mUseCppSyntax?ParserLanguage::CPlusPlus:ParserLanguage::C;
    if (!inProject()) {
        if (pSettings->codeCompletion().shareParser()) {
            if (language!=mParser->language()) {
                mParser->invalidateFile(mFilename);
                mParser=sharedParser(language);
            }
        } else {
            if (language!=mParser->language()) {
                mParser->setLanguage(language);
                resetCppParser(mParser);
            } else if (resetParser) {
                resetCppParser(mParser);
            }
        }
    }
    parseFile(mParser,mFilename, inProject());
}

void Editor::reparseTodo()
{
    if (!mParentPageControl)
        return;
    if (!highlighter())
        return;
    if (pSettings->editor().parseTodos())
        pMainWindow->todoParser()->parseFile(mFilename, inProject());
}

void Editor::insertString(const QString &value, bool moveCursor)
{
    beginUpdate();
    auto action = finally([this]{
        endUpdate();
    });

    QSynedit::BufferCoord oldCursorPos = caretXY();
    setSelText(value);
    if (!moveCursor) {
        setCaretXY(oldCursorPos);
    }
}

void Editor::insertCodeSnippet(const QString &code)
{
    clearUserCodeInTabStops();
    mXOffsetSince = 0;
    mTabStopBegin = -1;
    mTabStopEnd = -1;
    mTabStopY =0;
    mLineBeforeTabStop = "";
    mLineAfterTabStop = "";
    // prevent lots of repaints
    beginUpdate();
    auto action = finally([this]{
        endUpdate();
    });
    if (selAvail())
        setSelText("");
    QStringList sl = textToLines(parseMacros(code));
    int lastI=0;
//    int spaceCount = GetLeftSpacing(
//                leftSpaces(lineText()),true).length();
    QStringList newSl;
    for (int i=0;i<sl.count();i++) {
        int lastPos = 0;
        QString s = sl[i];
        if (i>0)
            lastPos = countLeadingWhitespaceChars(s);
        while (true) {
            int insertPos = s.indexOf(USER_CODE_IN_INSERT_POS);
            if (insertPos < 0) // no %INSERT% macro in this line now
                break;
            PTabStop p = std::make_shared<TabStop>();
            s.remove(insertPos, QString(USER_CODE_IN_INSERT_POS).length());
            //insertPos--;
            p->x = insertPos - lastPos;
            p->endX = p->x ;
            p->y = i - lastI;
            lastPos = insertPos;
            lastI = i;
            mUserCodeInTabStops.append(p);
        }
        lastPos = 0;
        if (i>0)
            lastPos = countLeadingWhitespaceChars(s);
        while (true) {
            int insertPos = s.indexOf(USER_CODE_IN_REPL_POS_BEGIN);
            if (insertPos < 0) // no %INSERT% macro in this line now
                break;
            PTabStop p = std::make_shared<TabStop>();
            s.remove(insertPos, QString(USER_CODE_IN_REPL_POS_BEGIN).length());
            //insertPos--;
            p->x = insertPos - lastPos;

            int insertEndPos = insertPos +
                    s.mid(insertPos).indexOf(USER_CODE_IN_REPL_POS_END);
            if (insertEndPos < insertPos) {
                p->endX = s.length();
            } else {
                s.remove(insertEndPos, QString(USER_CODE_IN_REPL_POS_END).length());
                //insertEndPos--;
                p->endX = insertEndPos - lastPos;
            }
            p->y=i-lastI;
            lastPos = insertEndPos;
            lastI = i;
            mUserCodeInTabStops.append(p);
        }
        newSl.append(s);
    }

    QSynedit::BufferCoord cursorPos = caretXY();
    QString s = linesToText(newSl);
//        if EndsStr(#13#10,s) then
//          Delete(s,Length(s)-1,2)
//        else if EndsStr(#10, s) then
//          Delete(s,Length(s),1);
    setSelText(s);
    if (mUserCodeInTabStops.count()>0) {
        setCaretXY(cursorPos); //restore cursor pos before insert
        mTabStopBegin = caretX();
        mTabStopEnd = caretX();
        popUserCodeInTabStops();
    }
    if (!code.isEmpty()) {
        mLastIdCharPressed = 0;
    }
}

void Editor::print()
{
    QPrinter printer;

    QPrintDialog dialog(&printer, this);
    dialog.setWindowTitle(tr("Print Document"));
//    if (editor->selAvail())
//        dialog.addEnabledOption(QAbstractPrintDialog::PrintSelection);
    if (dialog.exec() != QDialog::Accepted) {
        return;
    }
    QTextDocument doc;
//    if (editor->selAvail()) {
//        doc.setPlainText(editor->selText());
//    } else {
    QStringList lst = contents();
    for (int i=0;i<lst.length();i++) {
        int columns = 0;
        QString line = lst[i];
        QString newLine;
        for (QChar ch:line) {
            if (ch=='\t') {
                int charCol = tabWidth() - (columns % tabWidth());
                newLine += QString(charCol,' ');
                columns += charCol;
            } else {
                newLine+=ch;
                columns+=charColumns(ch);
            }
        }
        lst[i]=newLine;
    }
    doc.setDefaultFont(font());
    doc.setPlainText(lst.join(lineBreak()));
    doc.print(&printer);
}

void Editor::exportAsRTF(const QString &rtfFilename)
{
    QSynedit::SynRTFExporter exporter(pCharsetInfoManager->getDefaultSystemEncoding());
    exporter.setTitle(extractFileName(rtfFilename));
    exporter.setExportAsText(true);
    exporter.setUseBackground(pSettings->editor().copyRTFUseBackground());
    exporter.setFont(font());
    QSynedit::PHighlighter hl = highlighter();
    if (!pSettings->editor().copyRTFUseEditorColor()) {
        hl = highlighterManager.copyHighlighter(highlighter());
        highlighterManager.applyColorScheme(hl,pSettings->editor().copyRTFColorScheme());
    }
    exporter.setHighlighter(hl);
    exporter.setOnFormatToken(std::bind(&Editor::onExportedFormatToken,
                                        this,
                                        std::placeholders::_1,
                                        std::placeholders::_2,
                                        std::placeholders::_3,
                                        std::placeholders::_4,
                                        std::placeholders::_5
                                        ));
    exporter.ExportAll(document());
    exporter.SaveToFile(rtfFilename);
}

void Editor::exportAsHTML(const QString &htmlFilename)
{
    QSynedit::SynHTMLExporter exporter(tabWidth(), pCharsetInfoManager->getDefaultSystemEncoding());
    exporter.setTitle(extractFileName(htmlFilename));
    exporter.setExportAsText(false);
    exporter.setUseBackground(pSettings->editor().copyHTMLUseBackground());
    exporter.setFont(font());
    QSynedit::PHighlighter hl = highlighter();
    if (!pSettings->editor().copyHTMLUseEditorColor()) {
        hl = highlighterManager.copyHighlighter(highlighter());
        highlighterManager.applyColorScheme(hl,pSettings->editor().copyHTMLColorScheme());
    }
    exporter.setHighlighter(hl);
    exporter.setOnFormatToken(std::bind(&Editor::onExportedFormatToken,
                                        this,
                                        std::placeholders::_1,
                                        std::placeholders::_2,
                                        std::placeholders::_3,
                                        std::placeholders::_4,
                                        std::placeholders::_5
                                        ));
    exporter.ExportAll(document());
    exporter.SaveToFile(htmlFilename);
}

void Editor::showCompletion(const QString& preWord,bool autoComplete, CodeCompletionType type)
{
    if (pMainWindow->functionTip()->isVisible()) {
        pMainWindow->functionTip()->hide();
    }
    if (!pSettings->codeCompletion().enabled())
        return;
    if (!mParser || !mParser->enabled())
        return;

    if (!highlighter())
        return;

    if (mCompletionPopup->isVisible()) // already in search, don't do it again
        return;

    QString word="";

    QString s;
    QSynedit::PHighlighterAttribute attr;
    bool tokenFinished;
    QSynedit::BufferCoord pBeginPos, pEndPos;
    if (getHighlighterAttriAtRowCol(
                QSynedit::BufferCoord{caretX() - 1,
                caretY()}, s, tokenFinished, attr)) {
        if (attr->tokenType() == QSynedit::TokenType::Preprocessor) {//Preprocessor
            word = getWordAtPosition(this,caretXY(),pBeginPos,pEndPos, WordPurpose::wpDirective);
            if (!word.startsWith('#')) {
                word = "";
            }
        } else if (attr->tokenType() == QSynedit::TokenType::Comment) { //Comment, javadoc tag
            word = getWordAtPosition(this,caretXY(),pBeginPos,pEndPos, WordPurpose::wpJavadoc);
            if (!word.startsWith('@')) {
                    return;
            }
        } else if (
                   (attr->tokenType() != QSynedit::TokenType::Operator) &&
                   (attr->tokenType() != QSynedit::TokenType::Space) &&
                   (attr->tokenType() != QSynedit::TokenType::Keyword) &&
                   (attr->tokenType() != QSynedit::TokenType::Identifier)
                   ) {
            return;
        }
    }

    // Position it at the top of the next line
    QPoint p = rowColumnToPixels(displayXY());
    p+=QPoint(0,textHeight()+2);
    mCompletionPopup->move(mapToGlobal(p));

    mCompletionPopup->setRecordUsage(pSettings->codeCompletion().recordUsage());
    mCompletionPopup->setSortByScope(pSettings->codeCompletion().sortByScope());
    mCompletionPopup->setShowKeywords(pSettings->codeCompletion().showKeywords());
    mCompletionPopup->setShowCodeSnippets(pSettings->codeCompletion().showCodeIns());
    mCompletionPopup->setHideSymbolsStartWithUnderline(pSettings->codeCompletion().hideSymbolsStartsWithUnderLine());
    mCompletionPopup->setHideSymbolsStartWithTwoUnderline(pSettings->codeCompletion().hideSymbolsStartsWithTwoUnderLine());
    if (pSettings->codeCompletion().showCodeIns()) {
        mCompletionPopup->setCodeSnippets(pMainWindow->codeSnippetManager()->snippets());
    }
    mCompletionPopup->setIgnoreCase(pSettings->codeCompletion().ignoreCase());
    mCompletionPopup->resize(pSettings->codeCompletion().width(),
                             pSettings->codeCompletion().height());
//    fCompletionBox.CodeInsList := dmMain.CodeInserts.ItemList;
//    fCompletionBox.SymbolUsage := dmMain.SymbolUsage;
//    fCompletionBox.ShowCount := devCodeCompletion.MaxCount;
    //Set Font size;
    mCompletionPopup->setFont(font());
    // Redirect key presses to completion box if applicable
    //todo:
    mCompletionPopup->setKeypressedCallback([this](QKeyEvent *event)->bool{
        return onCompletionKeyPressed(event);
    });
    mCompletionPopup->setParser(mParser);
    pMainWindow->functionTip()->hide();
    mCompletionPopup->show();

    // Scan the current function body
    mCompletionPopup->setCurrentScope(
                mParser->findScopeStatement(mFilename, caretY())
                );

    QSet<QString> keywords;
    if (highlighter()) {
        if (highlighter()->language() != QSynedit::HighlighterLanguage::Cpp ) {
            keywords = highlighter()->keywords();
        } else {
            if (mUseCppSyntax) {
                foreach (const QString& keyword, CppKeywords.keys()) {
                    keywords.insert(keyword);
                }
            } else {
                keywords = CKeywords;
            }
            if (pSettings->editor().enableCustomCTypeKeywords()) {
                foreach (const QString& keyword, pSettings->editor().customCTypeKeywords()) {
                    keywords.insert(keyword);
                }
            }
        }
    }

    if (word.isEmpty()) {
        //word=getWordAtPosition(this,caretXY(),pBeginPos,pEndPos, WordPurpose::wpCompletion);
        QString memberOperator;
        QStringList memberExpression;
        QSynedit::BufferCoord pos = caretXY();
        pos.ch--;
        QStringList ownerExpression = getOwnerExpressionAndMemberAtPositionForCompletion(
                    pos,
                    memberOperator,
                    memberExpression);
//        qDebug()<<ownerExpression<<memberExpression;
        word = memberExpression.join("");
        mCompletionPopup->prepareSearch(
                    preWord,
                    ownerExpression,
                    memberOperator,
                    memberExpression,
                    mFilename,
                    caretY(),
                    type,
                    keywords);
    } else {
        QStringList memberExpression;
        memberExpression.append(word);
        mCompletionPopup->prepareSearch(preWord,
                                        QStringList(),
                                        "",
                                        memberExpression, mFilename, caretY(),type,keywords);
    }

    // Filter the whole statement list
    if (mCompletionPopup->search(word, autoComplete)) { //only one suggestion and it's not input while typing
        completionInsert(pSettings->codeCompletion().appendFunc());
    }
}

void Editor::showHeaderCompletion(bool autoComplete, bool forceShow)
{
    if (!pSettings->codeCompletion().enabled())
        return;
//    if not devCodeCompletion.Enabled then
//      Exit;

    if (!forceShow && mHeaderCompletionPopup->isVisible()) // already in search, don't do it again
        return;

    // Position it at the top of the next line
    QPoint p = rowColumnToPixels(displayXY());
    p.setY(p.y() + textHeight() + 2);
    mHeaderCompletionPopup->move(mapToGlobal(p));


    mHeaderCompletionPopup->setIgnoreCase(pSettings->codeCompletion().ignoreCase());
    mHeaderCompletionPopup->resize(pSettings->codeCompletion().width(),
                             pSettings->codeCompletion().height());
    //Set Font size;
    mHeaderCompletionPopup->setFont(font());

    // Redirect key presses to completion box if applicable
    mHeaderCompletionPopup->setKeypressedCallback([this](QKeyEvent* event)->bool{
        return onHeaderCompletionKeyPressed(event);
    });
    mHeaderCompletionPopup->setParser(mParser);

    QSynedit::BufferCoord pBeginPos,pEndPos;
    QString word = getWordAtPosition(this,caretXY(),pBeginPos,pEndPos,
                                     WordPurpose::wpHeaderCompletionStart);

    if (word.isEmpty())
        return;

    if (!word.startsWith('"') && !word.startsWith('<'))
        return;

    if (word.lastIndexOf('"')>0 || word.lastIndexOf('>')>0)
        return;

    pMainWindow->functionTip()->hide();
    mHeaderCompletionPopup->show();
    mHeaderCompletionPopup->setSearchLocal(word.startsWith('"'));
    word.remove(0,1);

    mHeaderCompletionPopup->prepareSearch(word, mFilename);

    // Filter the whole statement list
    if (mHeaderCompletionPopup->search(word, autoComplete)) //only one suggestion and it's not input while typing
        headerCompletionInsert(); // if only have one suggestion, just use it
}

bool Editor::testInFunc(int x, int y)
{
    bool result = false;
    QString s = document()->getString(y);
    int posY = y;
    int posX = std::min(x,s.length()-1); // x is started from 1
    int bracketLevel=0;
    while (true) {
        while (posX < 0) {
            posY--;
            if (posY < 0)
                return false;
            s = document()->getString(posY);
            posX = s.length()-1;
        }
        if (s[posX] == '>'
                || s[posX] == ']') {
            bracketLevel++;
        } else if (s[posX] == '<'
                   || s[posX] == '[') {
            bracketLevel--;
        } else if (bracketLevel==0) {
            switch (s[posX].unicode()) {
            case '(':
                return true;
            case ';':
            case '{':
                return false;
            }
            if (!(isIdentChar(s[posX])
                  || s[posX] == ' '
                  || s[posX] == '\t'
                  || s[posX] == '*'
                  || s[posX] == '&'))
                break;;
        }
        posX--;
    }
    return result;
}

void Editor::completionInsert(bool appendFunc)
{
    PStatement statement = mCompletionPopup->selectedStatement();
    if (!statement)
        return;

    if (pSettings->codeCompletion().recordUsage()
            && statement->kind != StatementKind::skUserCodeSnippet) {
        statement->usageCount+=1;
        pMainWindow->symbolUsageManager()->updateUsage(statement->fullName,
                                                         statement->usageCount);
    }

    QString funcAddOn = "";

// delete the part of the word that's already been typed ...
    QSynedit::BufferCoord p = wordEnd();
    QSynedit::BufferCoord pStart = wordStart();
    setCaretAndSelection(pStart,pStart,p);

    // if we are inserting a function,
    if (appendFunc) {
        if (statement->kind == StatementKind::skAlias) {
            PStatement newStatement = mParser->findAliasedStatement(statement);
            if (newStatement)
                statement = newStatement;
        }
        if ( (statement->kind == StatementKind::skFunction
               && !IOManipulators.contains(statement->fullName))
                || statement->kind == StatementKind::skConstructor
                || statement->kind == StatementKind::skDestructor
                ||
                (statement->kind == StatementKind::skPreprocessor
                  && !statement->args.isEmpty())) {
            QChar nextCh = nextNonSpaceChar(caretY()-1,p.ch-1);
            if (nextCh=='(') {
                funcAddOn = "";
            } else if (isIdentChar(nextCh) || nextCh == '"'
                       || nextCh == '\'') {
                funcAddOn = '(';
            } else {
                funcAddOn = "()";
            }
        }
    }

    // ... by replacing the selection
    if (statement->kind == StatementKind::skUserCodeSnippet) { // it's a user code template
        // insertUserCodeIn(Statement->value);
        //first move caret to the begin of the word to be replaced
        insertCodeSnippet(statement->value);
    } else {
        if (
                (statement->kind == StatementKind::skKeyword
                 || statement->kind == StatementKind::skPreprocessor)
                && (statement->command.startsWith('#')
                    || statement->command.startsWith('@'))
                ) {

            setSelText(statement->command.mid(1));
        } else
            setSelText(statement->command + funcAddOn);

        if (!funcAddOn.isEmpty())
            mLastIdCharPressed = 0;

        // Move caret inside the ()'s, only when the user has something to do there...
        if (!funcAddOn.isEmpty()
                && (statement->args != "()")
                && (statement->args != "(void)")) {
            setCaretX(caretX() - funcAddOn.length()+1);

            //todo: function hint
            // immediately activate function hint
//            if devEditor.ShowFunctionTip and Assigned(fText.Highlighter) then begin
//            fText.SetFocus;
//            fFunctionTip.Parser := fParser;
//            fFunctionTip.FileName := fFileName;
//            fFunctionTip.Show;
//              end;
        } else {
            setCaretX(caretX());
        }
    }
    mCompletionPopup->hide();
}

void Editor::headerCompletionInsert()
{
    QString headerName = mHeaderCompletionPopup->selectedFilename(true);
    if (headerName.isEmpty()) {
        mHeaderCompletionPopup->hide();
        return;
    }

    // delete the part of the word that's already been typed ...
    QSynedit::BufferCoord p = caretXY();
    int posBegin = p.ch-1;
    int posEnd = p.ch-1;
    QString sLine = lineText();
    while ((posBegin>0) &&
           (isIdentChar(sLine[posBegin-1]) || (sLine[posBegin-1]=='.') || (sLine[posBegin-1]=='+')))
        posBegin--;

    while ((posEnd < sLine.length())
           && (isIdentChar(sLine[posEnd]) || (sLine[posEnd]=='.') || (sLine[posBegin-1]=='+')))
        posEnd++;
    p.ch = posBegin+1;
    setBlockBegin(p);
    p.ch = posEnd+1;
    setBlockEnd(p);

    setSelText(headerName);

    setCaretX(caretX());

    if (headerName.endsWith("/")) {
        showHeaderCompletion(false,true);
    } else {
        mHeaderCompletionPopup->hide();
    }
}

bool Editor::onCompletionKeyPressed(QKeyEvent *event)
{
    bool processed = false;
    if (!mCompletionPopup->isEnabled())
        return false;
    QString oldPhrase = mCompletionPopup->memberPhrase();
    WordPurpose purpose = WordPurpose::wpCompletion;
    if (oldPhrase.startsWith('#')) {
        purpose = WordPurpose::wpDirective;
    } else if (oldPhrase.startsWith('@')) {
        purpose = WordPurpose::wpJavadoc;
    }
    QString phrase;
    QSynedit::BufferCoord pBeginPos,pEndPos;
    switch (event->key()) {
    case Qt::Key_Shift:
    case Qt::Key_Control:
    case Qt::Key_Meta:
    case Qt::Key_Alt:
        //ignore it
        return true;
    case Qt::Key_Backspace:
        commandProcessor(
                    QSynedit::EditCommand::ecDeleteLastChar,
                    QChar(), nullptr); // Simulate backspace in editor
        if (purpose == WordPurpose::wpCompletion) {
            phrase = getWordForCompletionSearch(caretXY(), mCompletionPopup->memberOperator()=="::");
        } else
            phrase = getWordAtPosition(this,caretXY(),
                                            pBeginPos,pEndPos,
                                            purpose);
        mLastIdCharPressed = phrase.length();
        if (phrase.isEmpty()) {
            mCompletionPopup->hide();
        } else {
            mCompletionPopup->search(phrase, false);
        }
        return true;
    case Qt::Key_Escape:
        mCompletionPopup->hide();
        return true;
    case Qt::Key_Return:
    case Qt::Key_Enter:
    case Qt::Key_Tab:
        completionInsert(pSettings->codeCompletion().appendFunc());
        return true;
    default:
        if (event->text().isEmpty()) {
            //stop completion
            mCompletionPopup->hide();
            keyPressEvent(event);
            return true;
        }
    }
    QChar ch = event->text().front();
    if (isIdentChar(ch)) {
        commandProcessor(QSynedit::EditCommand::ecChar, ch);
        if (purpose == WordPurpose::wpCompletion) {
            phrase = getWordForCompletionSearch(caretXY(),mCompletionPopup->memberOperator()=="::");
        } else
            phrase = getWordAtPosition(this,caretXY(),
                                            pBeginPos,pEndPos,
                                            purpose);
        mLastIdCharPressed = phrase.length();
        mCompletionPopup->search(phrase, false);
        return true;
    } else {
        //stop completion
        mCompletionPopup->hide();
        keyPressEvent(event);
        return true;
    }
    return processed;
}

bool Editor::onHeaderCompletionKeyPressed(QKeyEvent *event)
{
    bool processed = false;
    if (!mHeaderCompletionPopup->isEnabled())
        return false;
    QString phrase;
    QSynedit::BufferCoord pBeginPos,pEndPos;
    switch (event->key()) {
    case Qt::Key_Backspace:
        commandProcessor(
                    QSynedit::EditCommand::ecDeleteLastChar,
                    QChar(), nullptr); // Simulate backspace in editor
        phrase = getWordAtPosition(this,caretXY(),
                                   pBeginPos,pEndPos,
                                   WordPurpose::wpHeaderCompletion);
        mLastIdCharPressed = phrase.length();
        mHeaderCompletionPopup->search(phrase, false);
        return true;
    case Qt::Key_Escape:
        mHeaderCompletionPopup->hide();
        return true;
    case Qt::Key_Return:
    case Qt::Key_Enter:
    case Qt::Key_Tab:
        headerCompletionInsert();
        //mHeaderCompletionPopup->hide();
        return true;
    case Qt::Key_Shift:
        return false;
    default:
        if (event->text().isEmpty()) {
            //stop completion
            mHeaderCompletionPopup->hide();
            keyPressEvent(event);
            return true;
        }
    }
    QChar ch = event->text().front();

    if (isIdentChar(ch) || ch == '.'
            || ch =='_' || ch=='+') {
        commandProcessor(QSynedit::EditCommand::ecChar, ch);
        phrase = getWordAtPosition(this,caretXY(),
                                            pBeginPos,pEndPos,
                                            WordPurpose::wpHeaderCompletion);
        mLastIdCharPressed = phrase.length();
        mHeaderCompletionPopup->search(phrase, false);
        return true;
    } else {
        //stop completion
        mHeaderCompletionPopup->hide();
        keyPressEvent(event);
        return true;
    }
    return processed;
}

bool Editor::onCompletionInputMethod(QInputMethodEvent *event)
{
    bool processed = false;
    if (!mCompletionPopup->isVisible())
        return processed;
    QString s=event->commitString();
    if (!s.isEmpty()) {
        QString phrase = getWordForCompletionSearch(caretXY(),mCompletionPopup->memberOperator()=="::");
        mLastIdCharPressed = phrase.length();
        mCompletionPopup->search(phrase, false);
        return true;
    }
    return processed;
}

Editor::TipType Editor::getTipType(QPoint point, QSynedit::BufferCoord& pos)
{
    // Only allow in the text area...
    if (pointToCharLine(point, pos) && highlighter()) {
        if (!pMainWindow->debugger()->executing()
                && getSyntaxIssueAtPosition(pos)) {
            return TipType::Error;
        }

        QSynedit::PHighlighterAttribute attr;
        QString s;

        // Only allow hand tips in highlighted areas
        if (getHighlighterAttriAtRowCol(pos,s,attr)) {
            // Only allow Identifiers, Preprocessor directives, and selection
            if (attr) {
                if (selAvail()) {
                    // do not allow when dragging selection
                    if (isPointInSelection(pos))
                        return TipType::Selection;
                } else if (mParser && mParser->isIncludeLine(document()->getString(pos.line-1))) {
                    return TipType::Preprocessor;
                }else if (attr == highlighter()->identifierAttribute())
                    return TipType::Identifier;
            }
        }
    }
    return TipType::None;
}

void Editor::cancelHint()
{
    if(mHoverModifiedLine!=-1) {
        invalidateLine(mHoverModifiedLine);
        mHoverModifiedLine=-1;
    }

    //MainForm.Debugger.OnEvalReady := nil;

    // disable editor hint
    QToolTip::hideText();
    //mCurrentWord = "";
    //mCurrentTipType = TipType::None;
    updateMouseCursor();
}

QString Editor::getFileHint(const QString &s, bool fromNext)
{
    QString fileName = mParser->getHeaderFileName(mFilename, s, fromNext);
    if (fileExists(fileName)) {
        return fileName + " - " + tr("Ctrl+click for more info");
    }
    return "";
}

QString Editor::getParserHint(const QStringList& expression,const QString &/*s*/, int line)
{
    if (!mParser)
        return "";
    // This piece of code changes the parser database, possibly making hints and code completion invalid...
    QString result;
    // Exit early, don't bother creating a stream (which is slow)
    PStatement statement = mParser->findStatementOf(
                mFilename,expression,
                line);
    if (!statement)
        return result;
    if (statement->kind == StatementKind::skFunction
            || statement->kind == StatementKind::skConstructor
            || statement->kind == StatementKind::skDestructor) {
        //PStatement parentScope = statement->parentScope.lock();
//        if (parentScope && parentScope->kind == StatementKind::skNamespace) {
//            PStatementList namespaceStatementsList =
//                    mParser->findNamespace(parentScope->command);
//            if (namespaceStatementsList) {
//                int counts=0;
//                foreach (const PStatement& namespaceStatement, *namespaceStatementsList) {
//                    QString hint = getHintForFunction(statement,namespaceStatement,
//                                                      mFilename,line);
//                    if (!hint.isEmpty()) {
//                        counts++;
//                        if (!result.isEmpty())
//                            result += "\n";
//                        if (counts>4) {
//                            result += "...";
//                            break;
//                        }
//                        result += hint;
//                    }
//                }
//            }
//        } else
          result = getHintForFunction(statement,mFilename,line);
    } else if (statement->line>0) {
        QFileInfo fileInfo(statement->fileName);
        result = mParser->prettyPrintStatement(statement,mFilename, line) + " - "
                + QString("%1(%2) ").arg(fileInfo.fileName()).arg(statement->line)
                + tr("Ctrl+click for more info");
    } else {  // hard defines
        result = mParser->prettyPrintStatement(statement, mFilename);
    }
//    Result := StringReplace(Result, '|', #5, [rfReplaceAll]);
    return result;
}

void Editor::showDebugHint(const QString &s, int line)
{
    PStatement statement = mParser->findStatementOf(mFilename,s,line);
    if (statement) {
        if (statement->kind != StatementKind::skVariable
                && statement->kind != StatementKind::skGlobalVariable
                && statement->kind != StatementKind::skLocalVariable
                && statement->kind != StatementKind::skParameter) {
            return;
        }
    }
    if (pMainWindow->debugger()->commandRunning())
        return;
    if (pMainWindow->functionTip()->isVisible()) {
        pMainWindow->functionTip()->hide();
    }
    connect(pMainWindow->debugger(), &Debugger::evalValueReady,
               this, &Editor::onTipEvalValueReady);
    mCurrentDebugTipWord = s;
    pMainWindow->debugger()->sendCommand("-data-evaluate-expression",s);
}

QString Editor::getErrorHint(const PSyntaxIssue& issue)
{
    if (issue) {
        return issue->hint;
    } else {
        return "";
    }
}

QString Editor::getHintForFunction(const PStatement &statement, const QString& filename, int line)
{
    QFileInfo fileInfo(statement->fileName);
    QString result;
    result = mParser->prettyPrintStatement(statement,filename,line) + " - "
            + QString("%1(%2) ").arg(fileInfo.fileName()).arg(statement->line)
            + tr("Ctrl+click for more info");
//    const StatementMap& children = mParser->statementList().childrenStatements(scopeStatement);
//    foreach (const PStatement& childStatement, children){
//        if (statement->command == childStatement->command
//                && statement->kind == childStatement->kind) {
//            if ((line < childStatement->line) &&
//                    childStatement->fileName == filename)
//                continue;
//            if (!result.isEmpty())
//                result += "\n";
//            QFileInfo fileInfo(childStatement->fileName);
//            result = mParser->prettyPrintStatement(childStatement,filename,line) + " - "
//                    + QString("%1(%2) ").arg(fileInfo.fileName()).arg(childStatement->line)
//                    + tr("Ctrl+click for more info");
//        }
//    }
    return result;
}

void Editor::updateFunctionTip(bool showTip)
{
    if (pMainWindow->completionPopup()->isVisible()) {
        pMainWindow->functionTip()->hide();
        return;
    }
    if (inputMethodOn()) {
        pMainWindow->functionTip()->hide();
        return;
    }
    if (!highlighter())
        return;

    if (!mParser || !mParser->enabled())
        return;

    bool isFunction = false;
    auto action = finally([&isFunction]{
        if (!isFunction)
            pMainWindow->functionTip()->hide();
    });
    const int maxLines=10;
    QSynedit::BufferCoord caretPos = caretXY();
    int currentLine = caretPos.line-1;
    int currentChar = caretPos.ch-1;
    QSynedit::BufferCoord functionNamePos{-1,-1};
    bool foundFunctionStart = false;
    int parenthesisLevel = 0;
    int braceLevel = 0;
    int bracketLevel = 0;
    int paramsCount = 1;
    int currentParamPos = 1;
    if (currentLine>=document()->count())
        return;
    QChar ch=lastNonSpaceChar(currentLine,currentChar);
    if (ch!="(" && ch!=",")
        return;

    while (currentLine>=0) {
        QString line = document()->getString(currentLine);
        if (currentLine!=caretPos.line-1)
            currentChar = line.length();
        QStringList tokens;
        QList<int> positions;
        if (currentLine==0)
            highlighter()->resetState();
        else
            highlighter()->setState(
                            document()->ranges(currentLine-1));
        highlighter()->setLine(line,currentLine);
        while(!highlighter()->eol()) {
            int start = highlighter()->getTokenPos();
            QString token = highlighter()->getToken();
            QSynedit::PHighlighterAttribute attr = highlighter()->getTokenAttribute();
            if (start>=currentChar)
                break;

            if (attr->tokenType() != QSynedit::TokenType::Comment
                    && attr->tokenType() != QSynedit::TokenType::Space) {
                if (foundFunctionStart) {
                    if (attr!=highlighter()->identifierAttribute())
                        return; // not a function
                    functionNamePos.line = currentLine+1;
                    functionNamePos.ch = start+1;
                    break;
                }
                tokens.append(token);
                positions.append(start);
            } else if (attr->tokenType() == QSynedit::TokenType::Comment
                     && currentLine == caretPos.line-1 && start<caretPos.ch
                     && start+token.length()>=caretPos.ch) {
                return; // in comment, do nothing
            }
            highlighter()->next();
        }
        if (!foundFunctionStart) {
            for (int i=tokens.length()-1;i>=0;i--) {
                if (braceLevel>0) {
                    if (tokens[i]=="{") {
                        braceLevel--;
                    } else if (tokens[i]=="}") {
                        braceLevel++;
                    }
                } else if (bracketLevel>0) {
                    if (tokens[i]=="[") {
                        bracketLevel--;
                    } else if (tokens[i]=="]") {
                        bracketLevel++;
                    }
                }else if (parenthesisLevel>0){
                    if (tokens[i]==")") {
                        parenthesisLevel++;
                    } else if (tokens[i]=="(") {
                        parenthesisLevel--;
                    }
                } else {
                    if (tokens[i]=="(") {
                        // found start of function
                        foundFunctionStart = true;
                        if (i>0) {
                            functionNamePos.line = currentLine+1;
                            functionNamePos.ch = positions[i-1]+1;
                        }
                        break;
                    } else if (tokens[i]=="[") {
                        //we are not in a function call
                        return;
                    } else if (tokens[i]=="{") {
                        //we are not in a function call
                        return;
                    } else if (tokens[i]==";") {
                        //we are not in a function call
                        return;
                    } else if (tokens[i]==")") {
                        parenthesisLevel++;
                    } else if (tokens[i]=="}") {
                        braceLevel++;
                    } else if (tokens[i]=="]") {
                        bracketLevel++;
                    } else if (tokens[i]==",") {
                        paramsCount++;
                    }
                }
            }
        }
        if (functionNamePos.ch>=0)
            break;
        currentLine--;
        if (caretPos.line-currentLine>maxLines)
            break;
    }
    isFunction = functionNamePos.ch>=0;
    currentParamPos = paramsCount-1;
    if (!isFunction)
        return;
    QSynedit::BufferCoord pWordBegin, pWordEnd;

    QString s = getWordAtPosition(this, functionNamePos, pWordBegin,pWordEnd, WordPurpose::wpInformation);

    int x = pWordBegin.ch-1-1;
    QString line = document()->getString(pWordBegin.line-1);
    bool hasPreviousWord=false;
    while (x>=0) {
        QChar ch=line[x];
        if (ch == ' ' || ch == '\t') {
            x--;
            continue;
        }
        if (isIdentChar(ch)) {
            hasPreviousWord = true;
            break;
        }
        hasPreviousWord = false;
        break;
    }

    if (x >= 0 && hasPreviousWord) {
        QSynedit::BufferCoord pos = pWordBegin;
        pos.ch = x+1;
        QString previousWord = getPreviousWordAtPositionForSuggestion(pos);

        PStatement statement = mParser->findStatementOf(
                    mFilename,
                    previousWord,
                    pos.line);
        if (statement) {
            PStatement typeStatement = mParser->findTypeDef(statement,mFilename);
            if (typeStatement && typeStatement->kind == StatementKind::skClass) {
                s = previousWord;
                functionNamePos = pos;
            }
        }
    }

//    qDebug()<<QString("find word at %1:%2 - '%3'")
//              .arg(FuncStartXY.Line)
//              .arg(FuncStartXY.Char)
//              .arg(s);
    // Don't bother scanning the database when there's no identifier to scan for

    // Only do the cumbersome list filling when showing a new tooltip...

    if (s != pMainWindow->functionTip()->functionFullName()
            && !mParser->parsing()) {
        pMainWindow->functionTip()->clearTips();
        QList<PStatement> statements=mParser->getListOfFunctions(mFilename,
                                                                  s,
                                                                  functionNamePos.line);

        foreach (const PStatement statement, statements) {
            pMainWindow->functionTip()->addTip(
                        statement->command,
                        statement->fullName,
                        statement->type,
                        statement->args,
                        statement->noNameArgs);
        }
    }

    // If we can't find it in our database, hide
    if (pMainWindow->functionTip()->tipCount()<=0) {
        pMainWindow->functionTip()->hide();
        return;
    }
    // Position it at the top of the next line
    QPoint p = rowColumnToPixels(displayXY());
    p+=QPoint(0,textHeight()+2);
    pMainWindow->functionTip()->move(mapToGlobal(p));

    pMainWindow->functionTip()->setFunctioFullName(s);
    pMainWindow->functionTip()->guessFunction(paramsCount-1);
    pMainWindow->functionTip()->setParamIndex(
                currentParamPos
                );
    cancelHint();
    if (showTip)
        pMainWindow->functionTip()->show();
}

void Editor::clearUserCodeInTabStops()
{
    mUserCodeInTabStops.clear();
}

void Editor::popUserCodeInTabStops()
{
    if (mTabStopBegin < 0) {
      clearUserCodeInTabStops();
      return;
    }
    QSynedit::BufferCoord newCursorPos;
    int tabStopEnd;
    int tabStopBegin;
    if (mUserCodeInTabStops.count() > 0) {
        PTabStop p = mUserCodeInTabStops.front();
        // Update the cursor
        if (p->y ==0) {
            tabStopBegin = mTabStopEnd + p->x;
            tabStopEnd = mTabStopEnd + p->endX;
        } else {
            int n=countLeadingWhitespaceChars(document()->getString(caretY()-1+p->y));
//            qDebug()<<line<<n<<p->x;
            tabStopBegin = n+p->x+1;
            tabStopEnd = n+p->endX+1;
        }
        mTabStopY = caretY() + p->y;
        newCursorPos.line = mTabStopY;
        newCursorPos.ch = tabStopBegin;
        setCaretXY(newCursorPos);
        setBlockBegin(newCursorPos);
        newCursorPos.ch = tabStopEnd;
        setBlockEnd(newCursorPos);

        mTabStopBegin = tabStopBegin;
        mTabStopEnd = tabStopEnd;
        mLineBeforeTabStop = lineText().mid(0, mTabStopBegin-1) ;
        mLineAfterTabStop = lineText().mid(mTabStopEnd-1) ;
        mXOffsetSince=0;
        mUserCodeInTabStops.pop_front();
    }
}

void Editor::onExportedFormatToken(QSynedit::PHighlighter syntaxHighlighter, int Line, int column, const QString &token, QSynedit::PHighlighterAttribute& attr)
{
    if (!syntaxHighlighter)
        return;
    if (token.isEmpty())
        return;
    //don't do this
    if (mCompletionPopup->isVisible() || mHeaderCompletionPopup->isVisible())
        return;

    if (mParser && (attr == syntaxHighlighter->identifierAttribute())) {
        QSynedit::BufferCoord p{column,Line};
        QSynedit::BufferCoord pBeginPos,pEndPos;
        QString s= getWordAtPosition(this,p, pBeginPos,pEndPos, WordPurpose::wpInformation);
//        qDebug()<<s;
        PStatement statement = mParser->findStatementOf(mFilename,
          s , p.line);
        StatementKind kind = getKindOfStatement(statement);
        if (kind == StatementKind::skUnknown) {
            if ((pEndPos.line>=1)
              && (pEndPos.ch>=0)
              && (pEndPos.ch < document()->getString(pEndPos.line-1).length())
              && (document()->getString(pEndPos.line-1)[pEndPos.ch] == '(')) {
                kind = StatementKind::skFunction;
            } else {
                kind = StatementKind::skVariable;
            }
        }
        QSynedit::CppHighlighter* cppHighlighter = dynamic_cast<QSynedit::CppHighlighter*>(syntaxHighlighter.get());
        switch(kind) {
        case StatementKind::skFunction:
        case StatementKind::skConstructor:
        case StatementKind::skDestructor:
            attr = cppHighlighter->functionAttribute();
            break;
        case StatementKind::skClass:
        case StatementKind::skTypedef:
        case StatementKind::skAlias:
            attr = cppHighlighter->classAttribute();
            break;
        case StatementKind::skEnumClassType:
        case StatementKind::skEnumType:
            break;
        case StatementKind::skLocalVariable:
        case StatementKind::skParameter:
            attr = cppHighlighter->localVarAttribute();
            break;
        case StatementKind::skVariable:
            attr = cppHighlighter->variableAttribute();
            break;
        case StatementKind::skGlobalVariable:
            attr = cppHighlighter->globalVarAttribute();
            break;
        case StatementKind::skEnum:
        case StatementKind::skPreprocessor:
            attr = cppHighlighter->preprocessorAttribute();
            break;
        case StatementKind::skKeyword:
            attr = cppHighlighter->keywordAttribute();
            break;
        case StatementKind::skNamespace:
        case StatementKind::skNamespaceAlias:
            attr = cppHighlighter->stringAttribute();
            break;
        default:
            break;
        }
    }
}

void Editor::onScrollBarValueChanged()
{
    pMainWindow->functionTip()->hide();
}

PCppParser Editor::sharedParser(ParserLanguage language)
{
    PCppParser parser;
    if (mSharedParsers.contains(language)) {
        parser=mSharedParsers[language].lock();
    }
    if (!parser) {
        parser=std::make_shared<CppParser>();
        parser->setLanguage(language);
        parser->setOnGetFileStream(
                    std::bind(
                        &EditorList::getContentFromOpenedEditor,pMainWindow->editorList(),
                        std::placeholders::_1, std::placeholders::_2));
        resetCppParser(parser);
        parser->setEnabled(true);
        mSharedParsers.insert(language,parser);
    }
    return parser;
}

bool Editor::canAutoSave() const
{
    return mCanAutoSave;
}

void Editor::setCanAutoSave(bool newCanAutoSave)
{
    mCanAutoSave = newCanAutoSave;
}

const QDateTime &Editor::hideTime() const
{
    return mHideTime;
}

void Editor::setHideTime(const QDateTime &newHideTime)
{
    mHideTime = newHideTime;
}

const std::shared_ptr<QHash<StatementKind, std::shared_ptr<ColorSchemeItem> > > &Editor::statementColors() const
{
    return mStatementColors;
}

void Editor::setStatementColors(const std::shared_ptr<QHash<StatementKind, std::shared_ptr<ColorSchemeItem> > > &newStatementColors)
{
    mStatementColors = newStatementColors;
}

bool Editor::useCppSyntax() const
{
    return mUseCppSyntax;
}

void Editor::setUseCppSyntax(bool newUseCppSyntax)
{
    mUseCppSyntax = newUseCppSyntax;
}

void Editor::setProject(Project *pProject)
{
    if (mProject == pProject)
        return;
    mProject = pProject;
    if (mProject) {
        mParser = mProject->cppParser();
        if (isVisible()) {
            if (mParser && mParser->parsing()) {
                connect(mParser.get(),
                        &CppParser::onEndParsing,
                        this,
                        &QSynedit::SynEdit::invalidate);
            } else {
                invalidate();
            }
        }
    } else {
        initParser();
    }
}

void Editor::gotoDeclaration(const QSynedit::BufferCoord &pos)
{
    if (!parser())
        return;
    // Exit early, don't bother creating a stream (which is slow)
    QStringList expression = getExpressionAtPosition(pos);

    // Find it's definition
    PStatement statement = parser()->findStatementOf(
                filename(),
                expression,
                pos.line);
//    QString phrase = getWordAtPosition(this,pos,pBeginPos,pEndPos, WordPurpose::wpInformation);
//    if (phrase.isEmpty())
//        return;

//    PStatement statement = mParser->findStatementOf(
//                mFilename,phrase,pos.Line);

    if (!statement) {
//        pMainWindow->updateStatusbarMessage(tr("Symbol '%1' not found!").arg(phrase));
        return;
    }
    QString filename;
    int line;
    if (statement->fileName == mFilename && statement->line == pos.line) {
            filename = statement->definitionFileName;
            line = statement->definitionLine;
    } else {
        filename = statement->fileName;
        line = statement->line;
    }
    Editor *e = pMainWindow->openFile(filename);
    if (e) {
        e->setCaretPositionAndActivate(line,1);
    }
}

void Editor::gotoDefinition(const QSynedit::BufferCoord &pos)
{
    QStringList expression = getExpressionAtPosition(pos);

    // Find it's definition
    PStatement statement = parser()->findStatementOf(
                filename(),
                expression,
                pos.line);

    if (!statement) {
        // pMainWindow->updateStatusbarMessage(tr("Symbol '%1' not found!").arg(phrase));
        return;
    }
    QString filename;
    int line;
    if (statement->definitionFileName == mFilename && statement->definitionLine == pos.line) {
            filename = statement->fileName;
            line = statement->line;
    } else {
        filename = statement->definitionFileName;
        line = statement->definitionLine;
    }
    Editor *e = pMainWindow->openFile(filename);
    if (e) {
        e->setCaretPositionAndActivate(line,1);
    }
}

QString getWordAtPosition(QSynedit::SynEdit *editor, const QSynedit::BufferCoord &p, QSynedit::BufferCoord &pWordBegin, QSynedit::BufferCoord &pWordEnd, Editor::WordPurpose purpose)
{
    QString result = "";
    QString s;
    if ((p.line<1) || (p.line>editor->document()->count())) {
        pWordBegin = p;
        pWordEnd = p;
        return "";
    }

    s = editor->document()->getString(p.line - 1);
    int len = s.length();

    int wordBegin = p.ch - 1 - 1; //BufferCoord::Char starts with 1
    int wordEnd = p.ch - 1 - 1;

    // Copy forward until end of word
    if (purpose == Editor::WordPurpose::wpEvaluation
            || purpose == Editor::WordPurpose::wpInformation) {
        while (wordEnd + 1 < len) {
            if ((purpose == Editor::WordPurpose::wpEvaluation)
                    && (s[wordEnd + 1] == '[')) {
                if (!findComplement(s, '[', ']', wordEnd, 1))
                    break;
            } else if (editor->isIdentChar(s[wordEnd + 1])) {
                wordEnd++;
            } else
                break;
        }
    }

    // Copy backward until #
    if (purpose == Editor::WordPurpose::wpDirective) {
        while ((wordBegin >= 0) && (wordBegin < len)) {
           if (editor->isIdentChar(s[wordBegin]))
               wordBegin--;
           else if (s[wordBegin] == '#') {
               wordBegin--;
               break;
           } else
               break;
        }
    }

    // Copy backward until @
    if (purpose == Editor::WordPurpose::wpJavadoc) {
        while ((wordBegin >= 0) && (wordBegin < len)) {
           if (editor->isIdentChar(s[wordBegin]))
               wordBegin--;
           else if (s[wordBegin] == '@') {
               wordBegin--;
               break;
           } else
               break;
        }
    }

    // Copy backward until begin of path
    if (purpose == Editor::WordPurpose::wpHeaderCompletion) {
        while ((wordBegin >= 0) && (wordBegin < len)) {
            if (editor->isIdentChar(s[wordBegin])) {
                wordBegin--;
            } else if (s[wordBegin] == '.'
                    || s[wordBegin] == '+') {
                wordBegin--;
            } else if (s[wordBegin] == '/'
                     || s[wordBegin] == '\\') {
                wordBegin--;
                break;
            } else
                break;
        }
    }

    if (purpose == Editor::WordPurpose::wpHeaderCompletionStart) {
        while ((wordBegin >= 0) && (wordBegin < len)) {
            if (s[wordBegin] == '"'
                    || s[wordBegin] == '<') {
                wordBegin--;
                break;
            } else if (s[wordBegin] == '/'
                         || s[wordBegin] == '\\'
                         || s[wordBegin] == '.') {
                    wordBegin--;
            } else  if (editor->isIdentChar(s[wordBegin]))
                wordBegin--;
            else
                break;
        }
    }

//        && ( wordBegin < len)
    // Copy backward until begin of word
    if (purpose == Editor::WordPurpose::wpCompletion
            || purpose == Editor::WordPurpose::wpEvaluation
            || purpose == Editor::WordPurpose::wpInformation) {
        while ((wordBegin >= 0) && (wordBegin<len)) {
            if (s[wordBegin] == ']') {
                if (!findComplement(s, ']', '[', wordBegin, -1))
                    break;
                else
                    wordBegin--; // step over mathing [
            } else if (editor->isIdentChar(s[wordBegin])) {
                wordBegin--;
            } else if (s[wordBegin] == '.'
                       || s[wordBegin] == ':'
                       || s[wordBegin] == '~') { // allow destructor signs
                wordBegin--;
            } else if (
                       (s[wordBegin] == '>')
                       && (wordBegin+2<len)
                       && (s[wordBegin+1]==':')
                       && (s[wordBegin+2]==':')
                       ) { // allow template
                if (!findComplement(s, '>', '<', wordBegin, -1))
                    break;
                else
                    wordBegin--; // step over >
            } else if ((wordBegin-1 >= 0)
                       && (s[wordBegin - 1] == '-')
                       && (s[wordBegin] == '>')) {
                wordBegin-=2;
            } else if ((wordBegin-1 >= 0)
                   && (s[wordBegin - 1] == ':')
                   && (s[wordBegin] == ':')) {
                wordBegin-=2;
            } else if ((wordBegin > 0)
                       && (s[wordBegin] == ')')) {
                if (!findComplement(s, ')', '(', wordBegin, -1))
                    break;
                else
                    wordBegin--; // step over mathing (
            } else
                break;
        }
    }

    // Get end result
    result = s.mid(wordBegin+1, wordEnd - wordBegin);
    pWordBegin.line = p.line;
    pWordBegin.ch = wordBegin+1;
    pWordEnd.line = p.line;
    pWordEnd.ch = wordEnd;

    // last line still have part of word
    if (!result.isEmpty()
            && (
                result[0] == '.'
                || result[0] == '-')
            && (purpose == Editor::WordPurpose::wpCompletion
                || purpose == Editor::WordPurpose::wpEvaluation
                || purpose == Editor::WordPurpose::wpInformation)) {
        int i = wordBegin;
        int line=p.line;
        while (line>=1) {
            while (i>=0) {
                if (s[i] == ' '
                        || s[i] == '\t')
                    i--;
                else
                    break;
            }
            if (i<0) {
                line--;
                if (line>=1) {
                    s=editor->document()->getString(line-1);
                    i=s.length();
                    continue;
                } else
                    break;
            } else {
                QSynedit::BufferCoord highlightPos;
                QSynedit::BufferCoord pDummy;
                highlightPos.line = line;
                highlightPos.ch = i+1;
                result = getWordAtPosition(editor, highlightPos,pWordBegin,pDummy,purpose)+result;
                break;
            }
        }
    }

    // Strip function parameters
    int paramBegin,paramEnd;
    while (true) {
        paramBegin = result.indexOf('(');
        if (paramBegin > 0) {
            paramEnd = paramBegin;
            if ((paramBegin==0)
                    && findComplement(result, '(', ')', paramEnd, 1)
                    && (paramEnd = result.length()-1) ) {
                //remove the enclosing parenthese pair
                result = result.mid(1,result.length()-2);
                continue;
            } else {
                paramEnd = paramBegin;
              if (findComplement(result, '(', ')', paramEnd, 1)) {
                  result.remove(paramBegin, paramEnd - paramBegin + 1);
              } else
                  break;
            }
        } else
            break;
    }

    paramBegin = 0;
    while ((paramBegin < result.length()) && (result[paramBegin] == '*')) {
        paramBegin++;
    }
    result.remove(0,paramBegin);
    return result;
}

QString Editor::getPreviousWordAtPositionForSuggestion(const QSynedit::BufferCoord &p)
{
    QString result;
    if ((p.line<1) || (p.line>document()->count())) {
        return "";
    }
    bool inFunc = testInFunc(p.ch-1,p.line-1);

    QString s = document()->getString(p.line - 1);
    int wordBegin;
    int wordEnd = p.ch-1;
    if (wordEnd >= s.length())
        wordEnd = s.length()-1;
    while (true) {
        int bracketLevel=0;
        bool skipNextWord=false;
        while (wordEnd > 0) {
          if (s[wordEnd] == '>'
                 || s[wordEnd] == ']') {
              bracketLevel++;
          } else if (s[wordEnd] == '<'
                     || s[wordEnd] == '[') {
              bracketLevel--;
          } else if (bracketLevel==0) {
              //we can't differentiate multiple definition and function parameter define here , so we don't handle ','
              if (s[wordEnd] == ',') {
                  if (inFunc) // in func, dont skip ','
                      break;
                  else
                      skipNextWord=true;
              } else if (s[wordEnd] != ' '
                         && s[wordEnd] != '\t') {
                  break;
              }
          }
          wordEnd--;
        }
        if (wordEnd<0)
            return "";
        if (bracketLevel > 0)
            return "";
        if (!isIdentChar(s[wordEnd]))
            return "";

        wordBegin = wordEnd;
        while ((wordBegin >= 0) && (isIdentChar(s[wordBegin]) || s[wordBegin]==':') ) {
            wordBegin--;
        }
        wordBegin++;

        if (s[wordBegin]>='0' && s[wordBegin]<='9') // not valid word
            return "";

        result = s.mid(wordBegin, wordEnd - wordBegin+1);
        if ((result != "const") && !skipNextWord)
            break;
        wordEnd = wordBegin-1;
    }
    return result;
}

QString Editor::getPreviousWordAtPositionForCompleteFunctionDefinition(const QSynedit::BufferCoord &p)
{
    QString result;
    if ((p.line<1) || (p.line>document()->count())) {
        return "";
    }

    QString s = document()->getString(p.line - 1);
    int wordBegin;
    int wordEnd = p.ch-1;
    if (wordEnd >= s.length())
        wordEnd = s.length()-1;
    while (wordEnd > 0 &&  (isIdentChar(s[wordEnd]) || s[wordEnd] == ':')) {
      wordEnd--;
    }
    int bracketLevel=0;
    while (wordEnd > 0) {
        if (s[wordEnd] == '>'
               || s[wordEnd] == ']') {
            bracketLevel++;
        } else if (s[wordEnd] == '<'
                   || s[wordEnd] == '[') {
            bracketLevel--;
        } else if (bracketLevel==0) {
            if (s[wordEnd]=='*' || s[wordEnd]=='&' || s[wordEnd]==' ' || s[wordEnd]=='\t') {
                //do nothing
            } else if (isIdentChar(s[wordEnd]))
                break;
            else
                return ""; //error happened
        }
        wordEnd--;
    }
    if (wordEnd<0)
        return "";

//        if (!isIdentChar(s[wordEnd]))
//            return "";

    wordBegin = wordEnd;
    while ((wordBegin >= 0) && isIdentChar(s[wordBegin]) ) {
        wordBegin--;
    }
    wordBegin++;

    if (wordBegin<s.length() && s[wordBegin]>='0' && s[wordBegin]<='9') // not valid word
        return "";

    result = s.mid(wordBegin, wordEnd - wordBegin+1);

    return result;
}

void Editor::reformat(bool doReparse)
{
    if (readOnly())
        return;
#ifndef Q_OS_WIN
    if (!fileExists(pSettings->environment().AStylePath())) {
        QMessageBox::critical(this,
                              tr("astyle not found"),
                              tr("Can't find astyle in \"%1\".").arg(pSettings->environment().AStylePath()));
        return;
    }
#endif
    //we must remove all breakpoints and syntax issues
    onLinesDeleted(1,document()->count());
    QByteArray content = text().toUtf8();
    QStringList args = pSettings->codeFormatter().getArguments();
    //qDebug()<<args;
#ifdef Q_OS_WIN
    QByteArray newContent = runAndGetOutput("astyle.exe",
                                            pSettings->dirs().appDir(),
                                            args,
                                            content);
#else
    QByteArray newContent = runAndGetOutput(pSettings->environment().AStylePath(),
                                            extractFileDir(pSettings->environment().AStylePath()),
                                            args,
                                            content);
#endif
    if (newContent.isEmpty())
        return;
    int oldTopLine = topLine();
    QSynedit::BufferCoord mOldCaret = caretXY();

    beginUndoBlock();
    addLeftTopToUndo();
    addCaretToUndo();

    QSynedit::EditorOptions oldOptions = getOptions();
    QSynedit::EditorOptions newOptions = oldOptions;
    newOptions.setFlag(QSynedit::EditorOption::eoAutoIndent,false);
    setOptions(newOptions);
    replaceAll(QString::fromUtf8(newContent));
    setCaretXY(mOldCaret);
    setTopLine(oldTopLine);
    setOptions(oldOptions);
    endUndoBlock();

    if (doReparse && !pMainWindow->isQuitting() && !pMainWindow->isClosingAll()
            && !(inProject() && pMainWindow->closingProject())) {
        reparse(true);
        checkSyntaxInBack();
        reparseTodo();
        pMainWindow->updateEditorActions();
    }
}

void Editor::checkSyntaxInBack()
{
    if (!mParentPageControl)
        return;
    if (readOnly())
        return;
    if (!highlighter())
        return;
    if (highlighter()->language()!=QSynedit::HighlighterLanguage::Cpp)
        return;
    pMainWindow->checkSyntaxInBack(this);
}

const PCppParser &Editor::parser()
{
    return mParser;
}

void Editor::tab()
{
    if (mUserCodeInTabStops.count()>0) {
        int oldLine = caretY();
        popUserCodeInTabStops();
        if (oldLine!=caretY()) {
            invalidateLine(oldLine);
        }
        invalidateLine(caretY());
        return;
    } else {
        if (mTabStopBegin >= 0) {
            mTabStopBegin = -1;
            setCaretXY(blockEnd());
            invalidateLine(caretY());
            return;
        }
    }
    SynEdit::tab();
}

int Editor::gutterClickedLine() const
{
    return mGutterClickedLine;
}

void Editor::toggleBreakpoint(int line)
{
    if (hasBreakpoint(line)) {
        mBreakpointLines.remove(line);
        pMainWindow->debugger()->removeBreakpoint(line,this);
    } else {
        mBreakpointLines.insert(line);
        pMainWindow->debugger()->addBreakpoint(line,this);
    }

    invalidateGutterLine(line);
    invalidateLine(line);
}

void Editor::clearBreakpoints()
{
    pMainWindow->debugger()->deleteBreakpoints(this);
    mBreakpointLines.clear();
    invalidate();
}

bool Editor::hasBreakpoint(int line)
{
    return mBreakpointLines.contains(line);
}

void Editor::addBookmark(int line)
{
    mBookmarkLines.insert(line);
    invalidateGutterLine(line);
}

void Editor::removeBookmark(int line)
{
    mBookmarkLines.remove(line);
    invalidateGutterLine(line);
}

bool Editor::hasBookmark(int line) const
{
    return mBookmarkLines.contains(line);
}

void Editor::clearBookmarks()
{
    mBookmarkLines.clear();
    invalidateGutter();
}

void Editor::removeBreakpointFocus()
{
    if (mActiveBreakpointLine!=-1) {
        int oldLine = mActiveBreakpointLine;
        mActiveBreakpointLine = -1;
        invalidateGutterLine(oldLine);
        invalidateLine(oldLine);
    }
}

void Editor::modifyBreakpointProperty(int line)
{
    int index;
    PBreakpoint breakpoint = pMainWindow->debugger()->breakpointAt(line,this,&index);
    if (!breakpoint)
        return;
    bool isOk;
    QString s=QInputDialog::getText(this,
                              tr("Break point condition"),
                              tr("Enter the condition of the breakpoint:"),
                            QLineEdit::Normal,
                            breakpoint->condition,&isOk);
    if (isOk) {
        pMainWindow->debugger()->setBreakPointCondition(index,s,inProject());
    }
}

void Editor::setActiveBreakpointFocus(int Line, bool setFocus)
{
    if (Line != mActiveBreakpointLine) {
        removeBreakpointFocus();

        // Put the caret at the active breakpoint
        mActiveBreakpointLine = Line;

        if (setFocus)
            setCaretPositionAndActivate(Line,1);
        else
            setCaretPosition(Line,1);

        // Invalidate new active line
        invalidateGutterLine(Line);
        invalidateLine(Line);
    }
}

void Editor::applySettings()
{
    QSynedit::EditorOptions options = QSynedit::eoAltSetsColumnMode |
            QSynedit::eoDragDropEditing | QSynedit::eoDropFiles |  QSynedit::eoKeepCaretX | QSynedit::eoTabsToSpaces |
            QSynedit::eoRightMouseMovesCursor | QSynedit::eoScrollByOneLess | QSynedit::eoTabIndent | QSynedit::eoHideShowScrollbars | QSynedit::eoGroupUndo;

    //options
    options.setFlag(QSynedit::eoAutoIndent,pSettings->editor().autoIndent());
    options.setFlag(QSynedit::eoTabsToSpaces,pSettings->editor().tabToSpaces());

    options.setFlag(QSynedit::eoLigatureSupport, pSettings->editor().enableLigaturesSupport());

    options.setFlag(QSynedit::eoKeepCaretX,pSettings->editor().keepCaretX());
    options.setFlag(QSynedit::eoEnhanceHomeKey,pSettings->editor().enhanceHomeKey());
    options.setFlag(QSynedit::eoEnhanceEndKey,pSettings->editor().enhanceEndKey());

    options.setFlag(QSynedit::eoHideShowScrollbars,pSettings->editor().autoHideScrollbar());
    options.setFlag(QSynedit::eoScrollPastEol,pSettings->editor().scrollPastEol());
    options.setFlag(QSynedit::eoScrollPastEof,pSettings->editor().scrollPastEof());
    options.setFlag(QSynedit::eoScrollByOneLess,pSettings->editor().scrollByOneLess());
    options.setFlag(QSynedit::eoHalfPageScroll,pSettings->editor().halfPageScroll());
    options.setFlag(QSynedit::eoHalfPageScroll,pSettings->editor().halfPageScroll());
    options.setFlag(QSynedit::eoShowRainbowColor, pSettings->editor().rainbowParenthesis());
    setOptions(options);

    setTabWidth(pSettings->editor().tabWidth());
    setInsertCaret(pSettings->editor().caretForInsert());
    setOverwriteCaret(pSettings->editor().caretForOverwrite());
    setCaretUseTextColor(pSettings->editor().caretUseTextColor());
    setCaretColor(pSettings->editor().caretColor());

    codeFolding().indentGuides = pSettings->editor().showIndentLines();
    codeFolding().indentGuidesColor = pSettings->editor().indentLineColor();
    codeFolding().fillIndents = pSettings->editor().fillIndents();

    QFont f=QFont(pSettings->editor().fontName());
    f.setPixelSize(pointToPixel(pSettings->editor().fontSize()));
    f.setStyleStrategy(QFont::PreferAntialias);
    setFont(f);
    QFont f2=QFont(pSettings->editor().nonAsciiFontName());
    f2.setPixelSize(pointToPixel(pSettings->editor().fontSize()));
    f2.setStyleStrategy(QFont::PreferAntialias);
    setFontForNonAscii(f2);

    // Set gutter properties
    gutter().setLeftOffset(pointToPixel(pSettings->editor().fontSize()) + pSettings->editor().gutterLeftOffset());
    gutter().setRightOffset(pSettings->editor().gutterRightOffset());
    gutter().setBorderStyle(QSynedit::GutterBorderStyle::None);
    gutter().setUseFontStyle(pSettings->editor().gutterUseCustomFont());
    if (pSettings->editor().gutterUseCustomFont()) {
        f=QFont(pSettings->editor().gutterFontName());
        f.setPixelSize(pointToPixel(pSettings->editor().gutterFontSize()));
    } else {
        f=QFont(pSettings->editor().fontName());
        f.setPixelSize(pointToPixel(pSettings->editor().fontSize()));
    }
    f.setStyleStrategy(QFont::PreferAntialias);
    gutter().setFont(f);
    gutter().setDigitCount(pSettings->editor().gutterDigitsCount());
    gutter().setVisible(pSettings->editor().gutterVisible());
    gutter().setAutoSize(pSettings->editor().gutterAutoSize());
    gutter().setShowLineNumbers(pSettings->editor().gutterShowLineNumbers());
    gutter().setLeadingZeros(pSettings->editor().gutterAddLeadingZero());
    if (pSettings->editor().gutterLineNumbersStartZero())
        gutter().setLineNumberStart(0);
    else
        gutter().setLineNumberStart(1);
    //font color

    if (pSettings->editor().showRightEdgeLine()) {
        setRightEdge(pSettings->editor().rightEdgeWidth());
        setRightEdgeColor(pSettings->editor().rightEdgeLineColor());
    } else {
        setRightEdge(0);
    }

    if (pSettings->editor().enableCustomCTypeKeywords()) {
        if (highlighter() && highlighter()->language() == QSynedit::HighlighterLanguage::Cpp) {
            QSet<QString> set;
            foreach(const QString& s, pSettings->editor().customCTypeKeywords())
                set.insert(s);
            ((QSynedit::CppHighlighter*)(highlighter().get()))->setCustomTypeKeywords(set);
        }
    } else {
        if (highlighter() && highlighter()->language() == QSynedit::HighlighterLanguage::Cpp) {
            ((QSynedit::CppHighlighter*)(highlighter().get()))->setCustomTypeKeywords(QSet<QString>());
        }
    }

    this->setUndoLimit(pSettings->editor().undoLimit());
    this->setUndoMemoryUsage(pSettings->editor().undoMemoryUsage());

    setMouseWheelScrollSpeed(pSettings->editor().mouseWheelScrollSpeed());
    setMouseSelectionScrollSpeed(pSettings->editor().mouseSelectionScrollSpeed());
    invalidate();
}

static QSynedit::PHighlighterAttribute createRainbowAttribute(const QString& attrName, const QString& schemeName, const QString& schemeItemName) {
    PColorSchemeItem item = pColorManager->getItem(schemeName,schemeItemName);
    if (item) {
        QSynedit::PHighlighterAttribute attr = std::make_shared<QSynedit::HighlighterAttribute>(attrName,
                                                                                                QSynedit::TokenType::Default);
        attr->setForeground(item->foreground());
        attr->setBackground(item->background());
        return attr;
    }
    return QSynedit::PHighlighterAttribute();
}
void Editor::applyColorScheme(const QString& schemeName)
{
    QSynedit::EditorOptions options = getOptions();
    options.setFlag(QSynedit::EditorOption::eoShowRainbowColor, pSettings->editor().rainbowParenthesis());
    setOptions(options);
    highlighterManager.applyColorScheme(highlighter(),schemeName);
    if (pSettings->editor().rainbowParenthesis()) {
        QSynedit::PHighlighterAttribute attr0 =createRainbowAttribute(SYNS_AttrSymbol,
                                                               schemeName,COLOR_SCHEME_BRACE_1);
        QSynedit::PHighlighterAttribute attr1 =createRainbowAttribute(SYNS_AttrSymbol,
                                                               schemeName,COLOR_SCHEME_BRACE_2);
        QSynedit::PHighlighterAttribute attr2 =createRainbowAttribute(SYNS_AttrSymbol,
                                                               schemeName,COLOR_SCHEME_BRACE_3);
        QSynedit::PHighlighterAttribute attr3 =createRainbowAttribute(SYNS_AttrSymbol,
                                                               schemeName,COLOR_SCHEME_BRACE_4);
        setRainbowAttrs(attr0,attr1,attr2,attr3);
    }
    PColorSchemeItem item = pColorManager->getItem(schemeName,COLOR_SCHEME_ACTIVE_LINE);
    if (item) {
        setActiveLineColor(item->background());
    }
    item = pColorManager->getItem(schemeName,COLOR_SCHEME_GUTTER);
    if (item) {
        gutter().setTextColor(item->foreground());
        gutter().setColor(item->background());
    }
    item = pColorManager->getItem(schemeName,COLOR_SCHEME_GUTTER_ACTIVE_LINE);
    if (item) {
        gutter().setActiveLineTextColor(item->foreground());
    }
    item = pColorManager->getItem(schemeName,COLOR_SCHEME_FOLD_LINE);
    if (item) {
        codeFolding().folderBarLinesColor = item->foreground();
    }
    item = pColorManager->getItem(schemeName,COLOR_SCHEME_INDENT_GUIDE_LINE);
    if (item) {
        codeFolding().indentGuidesColor = item->foreground();
    }
    item = pColorManager->getItem(schemeName,COLOR_SCHEME_ERROR);
    if (item) {
        this->mSyntaxErrorColor = item->foreground();
    }
    item = pColorManager->getItem(schemeName,COLOR_SCHEME_WARNING);
    if (item) {
        this->mSyntaxWarningColor = item->foreground();
    }
    item = pColorManager->getItem(schemeName,COLOR_SCHEME_SELECTION);
    if (item) {
        setSelectedForeground(item->foreground());
        setSelectedBackground(item->background());
    } else {
        this->setForegroundColor(palette().color(QPalette::HighlightedText));
        this->setBackgroundColor(palette().color(QPalette::Highlight));
    }
    item = pColorManager->getItem(schemeName,COLOR_SCHEME_ACTIVE_BREAKPOINT);
    if (item) {
        this->mActiveBreakpointForegroundColor = item->foreground();
        this->mActiveBreakpointBackgroundColor = item->background();
    }
    item = pColorManager->getItem(schemeName,COLOR_SCHEME_BREAKPOINT);
    if (item) {
        this->mBreakpointForegroundColor = item->foreground();
        this->mBreakpointBackgroundColor = item->background();
    }
    item = pColorManager->getItem(schemeName,COLOR_SCHEME_TEXT);
    if (item) {
        this->setForegroundColor(item->foreground());
        this->setBackgroundColor(item->background());
    } else {
        this->setForegroundColor(palette().color(QPalette::Text));
        this->setBackgroundColor(palette().color(QPalette::Base));
    }
    item = pColorManager->getItem(schemeName,COLOR_SCHEME_CURRENT_HIGHLIGHTED_WORD);
    if (item) {
        mCurrentHighlighWordForeground = item->foreground();
        mCurrentHighlighWordBackground = item->background();
    } else {
        mCurrentHighlighWordForeground = selectedForeground();
        mCurrentHighlighWordBackground = selectedBackground();
    }

    this->invalidate();
}

void Editor::updateCaption(const QString& newCaption) {
    if (!mParentPageControl) {
        return;
    }
    int index = mParentPageControl->indexOf(this);
    if (index==-1)
        return;
    if (newCaption.isEmpty()) {
        QString caption = QFileInfo(mFilename).fileName();
        if (this->modified()) {
            caption.append("[*]");
        }
        if (this->readOnly()) {
            caption.append("["+tr("Readonly")+"]");
        }
        mParentPageControl->setTabText(index,caption);
    } else {
        mParentPageControl->setTabText(index,newCaption);
    }

}