Differential D12746 Diff 33823 kdevplatform/language/duchain/topducontextdynamicdata_p.h

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kdevplatform/language/duchain/topducontextdynamicdata_p.h

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		1		/* This is part of KDevelop
		2		Copyright 2018 R.J.V. Bertin <rjvbertin@gmail.com>
		3
		4		This library is free software; you can redistribute it and/or
		5		modify it under the terms of the GNU Library General Public
		6		License version 2 as published by the Free Software Foundation.
		7
		8		This library is distributed in the hope that it will be useful,
		9		but WITHOUT ANY WARRANTY; without even the implied warranty of
		10		MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
		11		Library General Public License for more details.
		12
		13		You should have received a copy of the GNU Library General Public License
		14		along with this library; see the file COPYING.LIB. If not, write to
		15		the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
		16		Boston, MA 02110-1301, USA.
		17		*/
		18
		19		#ifndef KDEVPLATFORM_TOPDUCONTEXTDYNAMICDATA_P_H
		20		#define KDEVPLATFORM_TOPDUCONTEXTDYNAMICDATA_P_H
		21
		22		#include <QByteArray>
		23		#include <QFile>
		24
		25		#include <languageexport.h>
		26
		27		namespace KDevelop {
		28
		29		// #define KDEV_TOPCONTEXTS_DB_TESTING
		30		// #define KDEV_TOPCONTEXTS_USE_FILES
		31		#define KDEV_TOPCONTEXTS_USE_LMDB
		32		// #define KDEV_TOPCONTEXTS_USE_LEVELDB
		33		// #define KDEV_TOPCONTEXTS_USE_KYOTO
		34
		35		// thin wrapper around QFile, implementing the default TopDUContext
		36		// storage mechanism but also used for migration purposes in the
		37		// database stores.
		38		class KDEVPLATFORMLANGUAGE_EXPORT TopDUContextFile : public QFile
		39		{
		40		public:
		41		TopDUContextFile(uint topContextIndex);
		42		void commit();
		43		static bool exists(uint topContextIndex);
		44		static bool remove(uint topContextIndex);
		45		};
		46
		47		#if defined(KDEV_TOPCONTEXTS_USE_LMDB) \|\| defined(KDEV_TOPCONTEXTS_USE_LEVELDB) \|\| defined(KDEV_TOPCONTEXTS_USE_KYOTO)
		48		class KDEVPLATFORMLANGUAGE_EXPORT TopDUContextDB
		49		{
		50		public:
		51		virtual ~TopDUContextDB() {};
		52		virtual bool open(QIODevice::OpenMode mode) = 0;
		53		virtual void commit() = 0;
		54		virtual bool flush() = 0;
		55		bool resize(qint64);
		56		qint64 write(const char* data, qint64 len);
		57		qint64 read(char* data, qint64 maxSize);
		58		QByteArray read(qint64 maxSize);
		59		QByteArray readAll();
		60		qint64 pos() const;
		61		bool seek(qint64 pos);
		62		qint64 size();
		63		QString errorString() const;
		64		QString fileName() const;
		65		static bool exists(uint) { return false; };
		66		static bool remove(uint) { return false; };
		67
		68		protected:
		69		bool open(QIODevice::OpenMode mode, const QString &backendName);
		70		virtual bool getCurrentKeyValue() = 0;
		71		virtual bool isValid() = 0;
		72		virtual bool currentKeyExists() = 0;
		73		static bool exists(const QByteArray&) { return false; };
		74		static QByteArray indexKey(uint idx);
		75		static QByteArray indexKey(uint* idx);
		76		bool migrateFromFile();
		77		QByteArray m_currentKey;
		78		uint m_currentIndex;
		79		QByteArray m_currentValue;
		80		qint64 m_currentLen, m_readCursor;
		81		int m_mode;
		82		QString m_errorString;
		83		};
		84		#endif
		85
		86		#ifdef KDEV_TOPCONTEXTS_USE_LMDB
		87		class KDEVPLATFORMLANGUAGE_EXPORT TopDUContextLMDB : public TopDUContextDB
		88		{
		89		public:
		90		typedef union { char bytes; qint32 qint32Ptr; } LZ4Frame;
		91		TopDUContextLMDB(uint topContextIndex);
		92		virtual ~TopDUContextLMDB();
		93		bool open(QIODevice::OpenMode mode) override;
		94		void commit() override;
		95		bool flush() override;
		96		QString fileName() const;
		97		static bool exists(uint topContextIndex);
		98		static bool remove(uint topContextIndex);
		99
		100		protected:
		101		virtual bool getCurrentKeyValue() override;
		102		virtual bool isValid() override;
		103		virtual bool currentKeyExists() override;
		104		static bool exists(const QByteArray& key);
		105		static uint s_DbRefCount;
		106		};
		107		#endif
		108
		109		#ifdef KDEV_TOPCONTEXTS_USE_LEVELDB
		110		class KDEVPLATFORMLANGUAGE_EXPORT TopDUContextLevelDB : public TopDUContextDB
		111		{
		112		public:
		113		TopDUContextLevelDB(uint topContextIndex);
		114		virtual ~TopDUContextLevelDB();
		115		bool open(QIODevice::OpenMode mode) override;
		116		void commit() override;
		117		bool flush() override;
		118		static bool exists(uint topContextIndex);
		119		static bool remove(uint topContextIndex);
		120
		121		protected:
		122		virtual bool getCurrentKeyValue() override;
		123		virtual bool isValid() override;
		124		virtual bool currentKeyExists() override;
		125		static bool exists(const QByteArray& key);
		126		static uint s_DbRefCount;
		127		};
		128		#endif
		129
		130		#ifdef KDEV_TOPCONTEXTS_USE_KYOTO
		131		class KDEVPLATFORMLANGUAGE_EXPORT TopDUContextKyotoCabinet : public TopDUContextDB
		132		{
		133		public:
		134		TopDUContextKyotoCabinet(uint topContextIndex);
		135		virtual ~TopDUContextKyotoCabinet();
		136		bool open(QIODevice::OpenMode mode) override;
		137		void commit() override;
		138		bool flush() override;
		139		QString fileName() const;
		140		static bool exists(uint topContextIndex);
		141		static bool remove(uint topContextIndex);
		142
		143		protected:
		144		virtual bool getCurrentKeyValue() override;
		145		virtual bool isValid() override;
		146		virtual bool currentKeyExists() override;
		147		static bool exists(const QByteArray& key);
		148		static uint s_DbRefCount;
		149		};
		150		#endif
		151
		152		}
		153		#endif