# Cppcheck report - LibreOffice: svtools/source/edit/editsyntaxhighlighter.cxx

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    /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
    /*
     * This file is part of the LibreOffice project.
     *
     * This Source Code Form is subject to the terms of the Mozilla Public
     * License, v. 2.0. If a copy of the MPL was not distributed with this
     * file, You can obtain one at http://mozilla.org/MPL/2.0/.
     *
     * This file incorporates work covered by the following license notice:
     *
     *   Licensed to the Apache Software Foundation (ASF) under one or more
     *   contributor license agreements. See the NOTICE file distributed
     *   with this work for additional information regarding copyright
     *   ownership. The ASF licenses this file to you under the Apache
     *   License, Version 2.0 (the "License"); you may not use this file
     *   except in compliance with the License. You may obtain a copy of
     *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
     */

    #include <svtools/svmedit.hxx>
    #include <vcl/xtextedt.hxx>
    #include <vcl/builder.hxx>
    #include <svtools/editsyntaxhighlighter.hxx>
    #include <vcl/txtattr.hxx>

    MultiLineEditSyntaxHighlight::MultiLineEditSyntaxHighlight( vcl::Window* pParent, WinBits nWinStyle,
        HighlighterLanguage aLanguage): MultiLineEdit(pParent,nWinStyle), mbDoBracketHilight(true), aHighlighter(aLanguage)
    {
        EnableUpdateData(300);
    }

    extern "C" SAL_DLLPUBLIC_EXPORT vcl::Window* SAL_CALL makeMultiLineEditSyntaxHighlight(vcl::Window *pParent, VclBuilder::stringmap &)<--- The function 'makeMultiLineEditSyntaxHighlight' is never used.
    {
        return new MultiLineEditSyntaxHighlight(pParent);
    }

    MultiLineEditSyntaxHighlight::~MultiLineEditSyntaxHighlight()
    {
    }

    void MultiLineEditSyntaxHighlight::SetText(const OUString& rNewText)
    {
        MultiLineEdit::SetText(rNewText);
        UpdateData();
    }

    void MultiLineEditSyntaxHighlight::DoBracketHilight(sal_uInt16 nKey)
    {
        TextSelection aCurrentPos = GetTextView()->GetSelection();
        sal_Int32 nStartPos = aCurrentPos.GetStart().GetIndex();
        sal_Int32 nStartPara = aCurrentPos.GetStart().GetPara();
        sal_uInt16 nCount = 0;
        int nChar = -1;

        switch (nKey)
        {
            case '\'':  // no break
            case '"':
            {
                nChar = nKey;
                break;
            }
            case '}' :
            {
                nChar = '{';
                break;
            }
            case ')':
            {
                nChar = '(';
                break;
            }
            case ']':
            {
                nChar = '[';
                break;
            }
        }

        if (nChar != -1)
        {
            for (sal_Int32 nPara = nStartPara; nPara >= 0; --nPara)
            {
                if (nStartPos == 0)
                    continue;

                OUString aLine( GetTextEngine()->GetText( nPara ) );

                if (aLine.isEmpty())
                    continue;

                for (sal_Int32 i = (nPara==nStartPara) ? nStartPos-1 : aLine.getLength()-1; i>0; --i)
                {
                    if (aLine[i] == nChar)
                    {
                        if (!nCount)
                        {
                            GetTextEngine()->SetAttrib( TextAttribFontWeight( WEIGHT_ULTRABOLD ), nPara, i, i+1, true );
                            GetTextEngine()->SetAttrib( TextAttribFontColor( Color(0,0,0) ), nPara, i, i+1, true );
                            GetTextEngine()->SetAttrib( TextAttribFontWeight( WEIGHT_ULTRABOLD ), nStartPara, nStartPos, nStartPos, true );
                            GetTextEngine()->SetAttrib( TextAttribFontColor( Color(0,0,0) ), nStartPara, nStartPos, nStartPos, true );
                            return;
                        }
                        else
                            --nCount;
                    }
                    if (aLine[i] == nKey)
                        ++nCount;
                }
            }
        }
    }

    bool MultiLineEditSyntaxHighlight::PreNotify( NotifyEvent& rNEvt )
    {
        if ( mbDoBracketHilight && (rNEvt.GetType() == MouseNotifyEvent::KEYINPUT) )
            DoBracketHilight(rNEvt.GetKeyEvent()->GetCharCode());

        return MultiLineEdit::PreNotify(rNEvt);
    }

    Color MultiLineEditSyntaxHighlight::GetColorValue(TokenTypes aToken)
    {
        Color aColor;
        switch (aHighlighter.GetLanguage())
        {
            case HIGHLIGHT_SQL:
            {
                switch (aToken)
                {
                    case TT_IDENTIFIER: aColor = (ColorData)m_aColorConfig.GetColorValue(svtools::SQLIDENTIFIER).nColor; break;
                    case TT_NUMBER:     aColor = (ColorData)m_aColorConfig.GetColorValue(svtools::SQLNUMBER).nColor; break;
                    case TT_STRING:     aColor = (ColorData)m_aColorConfig.GetColorValue(svtools::SQLSTRING).nColor; break;
                    case TT_OPERATOR:   aColor = (ColorData)m_aColorConfig.GetColorValue(svtools::SQLOPERATOR).nColor; break;
                    case TT_KEYWORDS:   aColor = (ColorData)m_aColorConfig.GetColorValue(svtools::SQLKEYWORD).nColor; break;
                    case TT_PARAMETER:  aColor = (ColorData)m_aColorConfig.GetColorValue(svtools::SQLPARAMETER).nColor; break;
                    case TT_COMMENT:    aColor = (ColorData)m_aColorConfig.GetColorValue(svtools::SQLCOMMENT).nColor; break;
                    default:            aColor = Color(0,0,0);
                }
                break;
            }
            case HIGHLIGHT_BASIC:
            {
                switch (aToken)
                {
                    case TT_IDENTIFIER: aColor = Color(255,0,0); break;
                    case TT_COMMENT:    aColor = Color(0,0,45); break;
                    case TT_NUMBER:     aColor = Color(204,102,204); break;
                    case TT_STRING:     aColor = Color(0,255,45); break;
                    case TT_OPERATOR:   aColor = Color(0,0,100); break;
                    case TT_KEYWORDS:   aColor = Color(0,0,255); break;
                    case TT_ERROR :     aColor = Color(0,255,255); break;
                    default:            aColor = Color(0,0,0);
                }
                break;
            }
            default: aColor = Color(0,0,0);

        }
        return aColor;
    }

    void MultiLineEditSyntaxHighlight::UpdateData()
    {
        // syntax highlighting
        // this must be possible improved by using notifychange correctly
        bool bTempModified = GetTextEngine()->IsModified();
        for (unsigned int nLine=0; nLine < GetTextEngine()->GetParagraphCount(); nLine++)
        {
            OUString aLine( GetTextEngine()->GetText( nLine ) );
            GetTextEngine()->RemoveAttribs( nLine, true );
            std::vector<HighlightPortion> aPortions;
            aHighlighter.getHighlightPortions( aLine, aPortions );
            for (std::vector<HighlightPortion>::iterator i(aPortions.begin());
                 i != aPortions.end(); ++i)
            {
                GetTextEngine()->SetAttrib( TextAttribFontColor( GetColorValue(i->tokenType) ), nLine, i->nBegin, i->nEnd, true );
            }
        }
        GetTextView()->ShowCursor( false, true );
        GetTextEngine()->SetModified(bTempModified);
    }

    /* vim:set shiftwidth=4 softtabstop=4 expandtab: */