xref: /trunk/main/svtools/inc/svtools/syntaxhighlight.hxx (revision 01aa44aa)

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 * 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
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#ifndef _SVTOOLS_SYNTAXHIGHLIGHT_HXX
#define _SVTOOLS_SYNTAXHIGHLIGHT_HXX

#include <list>

#include <vos/macros.hxx>
#include <vos/mutex.hxx>

#include <vcl/svapp.hxx>

#include <tools/stream.hxx>
#include <tools/shl.hxx>

#include <svl/brdcst.hxx>
#include <svtools/svtdllapi.h>


// for the bsearch
#ifdef WNT
#define CDECL _cdecl
#endif
#if defined(UNX) || defined(OS2)
#define CDECL
#endif
#ifdef UNX
#include <sys/resource.h>
#endif

#include <stdio.h>

#include <tools/string.hxx>
#include <tools/gen.hxx>


// 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;

/////////////////////////////////////////////////////////////////////////
// Hilfsklasse zur Untersuchung von JavaScript-Modulen, zunaechst zum
// Heraussuchen der Funktionen, spaeter auch zum Syntax-Highlighting verwenden

//	Flags fuer Zeichen-Eigenschaften
#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


// Sprachmodus des HighLighters (spaeter eventuell feiner
// differenzieren mit Keyword-Liste, C-Kommentar-Flag)
enum HighlighterLanguage
{
	HIGHLIGHT_BASIC,
	HIGHLIGHT_SQL
};

class SimpleTokenizer_Impl
{
	HighlighterLanguage aLanguage;
	// Zeichen-Info-Tabelle
	sal_uInt16 aCharTypeTab[256];

	const sal_Unicode* mpStringBegin;
	const sal_Unicode* mpActualPos;

	// Zeile und Spalte
	sal_uInt32 nLine;
	sal_uInt32 nCol;

	sal_Unicode peekChar( void )	{ return *mpActualPos; }
	sal_Unicode getChar( void )		{ nCol++; return *mpActualPos++; }

	// Hilfsfunktion: Zeichen-Flag Testen
	sal_Bool testCharFlags( sal_Unicode c, sal_uInt16 nTestFlags );

	// Neues Token holen, Leerstring == nix mehr da
	sal_Bool getNextToken( /*out*/TokenTypes& reType,
		/*out*/const sal_Unicode*& rpStartPos, /*out*/const sal_Unicode*& rpEndPos );

	String getTokStr( /*out*/const sal_Unicode* pStartPos, /*out*/const sal_Unicode* pEndPos );

#ifdef DBG_UTIL
	// TEST: Token ausgeben
	String getFullTokenStr( /*out*/TokenTypes eType,
		/*out*/const sal_Unicode* pStartPos, /*out*/const sal_Unicode* pEndPos );
#endif

	const char** ppListKeyWords;
	sal_uInt16 nKeyWordCount;

public:
	SimpleTokenizer_Impl( HighlighterLanguage aLang = HIGHLIGHT_BASIC );
	~SimpleTokenizer_Impl( void );

	sal_uInt16 parseLine( sal_uInt32 nLine, const String* aSource );
	void getHighlightPortions( sal_uInt32 nParseLine, const String& rLine,
													/*out*/HighlightPortions& portions );
	void setKeyWords( const char** ppKeyWords, sal_uInt16 nCount );
};


//*** SyntaxHighlighter-Klasse ***
// Konzept: Der Highlighter wird ueber alle Aenderungen im Source
// informiert (notifyChange) und liefert dem Aufrufer jeweils die
// Information zurueck, welcher Zeilen-Bereich des Source-Codes
// aufgrund dieser Aenderung neu gehighlighted werden muss.
// Dazu merkt sich Highlighter intern fuer jede Zeile, ob dort
// C-Kommentare beginnen oder enden.
class SVT_DLLPUBLIC SyntaxHighlighter
{
	HighlighterLanguage eLanguage;
	SimpleTokenizer_Impl* m_pSimpleTokenizer;
	char* m_pKeyWords;
	sal_uInt16 m_nKeyWordCount;

//	void initializeKeyWords( HighlighterLanguage eLanguage );

public:
	SyntaxHighlighter( void );
	~SyntaxHighlighter( void );

	// HighLighter (neu) initialisieren, die Zeilen-Tabelle wird
	// dabei komplett geloescht, d.h. im Abschluss wird von einem
	// leeren Source ausgegangen. In notifyChange() kann dann
	// nur Zeile 0 angegeben werden.
	void initialize( HighlighterLanguage eLanguage_ );

	const Range notifyChange( sal_uInt32 nLine, sal_Int32 nLineCountDifference,
								const String* pChangedLines, sal_uInt32 nArrayLength);

	void getHighlightPortions( sal_uInt32 nLine, const String& rLine,
											HighlightPortions& pPortions );

	HighlighterLanguage GetLanguage() { return eLanguage;}
};
#endif