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Diffstat (limited to 'include/comphelper/syntaxhighlight.hxx')
| -rw-r--r-- | include/comphelper/syntaxhighlight.hxx | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/include/comphelper/syntaxhighlight.hxx b/include/comphelper/syntaxhighlight.hxx new file mode 100644 index 000000000000..ef1a9486a6bf --- /dev/null +++ b/include/comphelper/syntaxhighlight.hxx @@ -0,0 +1,162 @@ +/* -*- 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 . + */ +#ifndef _COMPHELPER_SYNTAXHIGHLIGHT_HXX +#define _COMPHELPER_SYNTAXHIGHLIGHT_HXX + +#include <vector> +#include <rtl/ustring.hxx> + +#include <comphelper/comphelperdllapi.h> + + +#if defined CDECL +#undef CDECL +#endif + +// for the bsearch +#ifdef WNT +#define CDECL _cdecl +#endif +#if defined(UNX) +#define CDECL +#endif +#ifdef UNX +#include <sys/resource.h> +#endif + + +// Token-Typen TT_... +enum TokenTypes +{ + TT_UNKNOWN, + TT_IDENTIFIER, + TT_WHITESPACE, + TT_NUMBER, + TT_STRING, + TT_EOL, + TT_COMMENT, + TT_ERROR, + TT_OPERATOR, + TT_KEYWORDS, + TT_PARAMETER +}; + +struct HighlightPortion { sal_uInt16 nBegin; sal_uInt16 nEnd; TokenTypes tokenType; }; + + +typedef std::vector<HighlightPortion> HighlightPortions; + +///////////////////////////////////////////////////////////////////////// +// Auxiliary class to support JavaScript modules, next to find functions which +// will later will be used for syntax highlighting + +// Flags for character properties +#define CHAR_START_IDENTIFIER 0x0001 +#define CHAR_IN_IDENTIFIER 0x0002 +#define CHAR_START_NUMBER 0x0004 +#define CHAR_IN_NUMBER 0x0008 +#define CHAR_IN_HEX_NUMBER 0x0010 +#define CHAR_IN_OCT_NUMBER 0x0020 +#define CHAR_START_STRING 0x0040 +#define CHAR_OPERATOR 0x0080 +#define CHAR_SPACE 0x0100 +#define CHAR_EOL 0x0200 + +#define CHAR_EOF 0x00 + + +// Language mode of the Highlighter (possibly to be refined later with keyword +// lists, C comment flags) +enum HighlighterLanguage +{ + HIGHLIGHT_BASIC, + HIGHLIGHT_SQL +}; + +class SimpleTokenizer_Impl +{ + HighlighterLanguage aLanguage; + // Character information tables + sal_uInt16 aCharTypeTab[256]; + + const sal_Unicode* mpStringBegin; + const sal_Unicode* mpActualPos; + + // Lines and columns + sal_uInt32 nLine; + sal_uInt32 nCol; + + sal_Unicode peekChar( void ) { return *mpActualPos; } + sal_Unicode getChar( void ) { nCol++; return *mpActualPos++; } + + // Auxiliary function: testing of the character flags + sal_Bool testCharFlags( sal_Unicode c, sal_uInt16 nTestFlags ); + + // Get new token, EmptyString == nothing more over there + sal_Bool getNextToken( /*out*/TokenTypes& reType, + /*out*/const sal_Unicode*& rpStartPos, /*out*/const sal_Unicode*& rpEndPos ); + + const char** ppListKeyWords; + sal_uInt16 nKeyWordCount; + +public: + SimpleTokenizer_Impl( HighlighterLanguage aLang = HIGHLIGHT_BASIC ); + ~SimpleTokenizer_Impl( void ); + + sal_uInt16 parseLine( sal_uInt32 nLine, const OUString* aSource ); + void getHighlightPortions( sal_uInt32 nParseLine, const OUString& rLine, + /*out*/HighlightPortions& portions ); + void setKeyWords( const char** ppKeyWords, sal_uInt16 nCount ); +}; + + +//*** SyntaxHighlighter Class *** +// Concept: the Highlighter will be notified of all changes in the source +// (notifyChange) and returns the caller the range of lines, which based on the +// changes, need to be highlighted again. For this the Highlighter marks all +// lines internally whether or not C comments begin or end. +class COMPHELPER_DLLPUBLIC SyntaxHighlighter +{ + HighlighterLanguage eLanguage; + SimpleTokenizer_Impl* m_pSimpleTokenizer; + char* m_pKeyWords; + sal_uInt16 m_nKeyWordCount; + +// void initializeKeyWords( HighlighterLanguage eLanguage ); + +public: + SyntaxHighlighter( void ); + ~SyntaxHighlighter( void ); + + // (Re-)initialize Highlighter. The line-table will be completely erased, + // meaning that on completion an empty Source is assumed. + // notifyChange() can only be given line 0 + void initialize( HighlighterLanguage eLanguage_ ); + + void notifyChange( sal_uInt32 nLine, sal_Int32 nLineCountDifference, + const OUString* pChangedLines, sal_uInt32 nArrayLength); + + void getHighlightPortions( sal_uInt32 nLine, const OUString& rLine, + HighlightPortions& pPortions ); + + HighlighterLanguage GetLanguage() { return eLanguage;} +}; +#endif + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |