/* -*- 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 INCLUDED_STORE_SOURCE_STORTREE_HXX #define INCLUDED_STORE_SOURCE_STORTREE_HXX #include #include #include #include #include "storbase.hxx" namespace store { class OStorePageBIOS; struct OStoreBTreeEntry { typedef OStorePageKey K; typedef OStorePageLink L; /** Representation. */ K m_aKey; L m_aLink; sal_uInt32 m_nAttrib; /** Construction. */ explicit OStoreBTreeEntry ( K const & rKey = K(), L const & rLink = L()) : m_aKey (rKey), m_aLink (rLink), m_nAttrib (store::htonl(0)) {} /** Comparison. */ enum CompareResult { COMPARE_LESS = -1, COMPARE_EQUAL = 0, COMPARE_GREATER = 1 }; CompareResult compare (const OStoreBTreeEntry& rOther) const { if (m_aKey < rOther.m_aKey) return COMPARE_LESS; else if (m_aKey == rOther.m_aKey) return COMPARE_EQUAL; else return COMPARE_GREATER; } }; #define STORE_MAGIC_BTREENODE sal_uInt32(0x58190322) struct OStoreBTreeNodeData : public store::PageData { typedef PageData base; typedef OStoreBTreeNodeData self; typedef OStorePageGuard G; typedef OStoreBTreeEntry T; /** Representation. */ G m_aGuard; T m_pData[1]; /** type. */ static const sal_uInt32 theTypeId = STORE_MAGIC_BTREENODE; /** theSize. */ static const size_t theSize = sizeof(G); static const sal_uInt16 thePageSize = base::theSize + self::theSize; static_assert(STORE_MINIMUM_PAGESIZE >= self::thePageSize, "got to be at least equal in size"); /** capacity. */ sal_uInt16 capacity() const { return static_cast(store::ntohs(base::m_aDescr.m_nSize) - self::thePageSize); } /** capacityCount (must be even). */ sal_uInt16 capacityCount() const { return sal_uInt16(capacity() / sizeof(T)); } /** usage. */ sal_uInt16 usage() const { return static_cast(store::ntohs(base::m_aDescr.m_nUsed) - self::thePageSize); } /** usageCount. */ sal_uInt16 usageCount() const { return sal_uInt16(usage() / sizeof(T)); } void usageCount (sal_uInt16 nCount) { size_t const nBytes = self::thePageSize + nCount * sizeof(T); base::m_aDescr.m_nUsed = store::htons(sal::static_int_cast< sal_uInt16 >(nBytes)); } /** Construction. */ explicit OStoreBTreeNodeData (sal_uInt16 nPageSize); /** guard (external representation). */ void guard() { sal_uInt32 nCRC32 = 0; nCRC32 = rtl_crc32 (nCRC32, &m_aGuard.m_nMagic, sizeof(sal_uInt32)); nCRC32 = rtl_crc32 (nCRC32, m_pData, capacity()); m_aGuard.m_nCRC32 = store::htonl(nCRC32); } /** verify (external representation). */ storeError verify() const { sal_uInt32 nCRC32 = 0; nCRC32 = rtl_crc32 (nCRC32, &m_aGuard.m_nMagic, sizeof(sal_uInt32)); nCRC32 = rtl_crc32 (nCRC32, m_pData, capacity()); if (m_aGuard.m_nCRC32 != store::htonl(nCRC32)) return store_E_InvalidChecksum; else return store_E_None; } /** depth. */ sal_uInt32 depth() const { return store::ntohl(self::m_aGuard.m_nMagic); } void depth (sal_uInt32 nDepth) { self::m_aGuard.m_nMagic = store::htonl(nDepth); } /** querySplit. */ bool querySplit() const { return usageCount() >= capacityCount(); } /** Operation. */ sal_uInt16 find (const T& t) const; void insert (sal_uInt16 i, const T& t); void remove (sal_uInt16 i); /** split (left half copied from right half of left page). */ void split (const self& rPageL); /** truncate (to n elements). */ void truncate (sal_uInt16 n); }; class OStoreBTreeNodeObject : public store::OStorePageObject { typedef OStorePageObject base; typedef OStoreBTreeNodeObject self; typedef OStoreBTreeNodeData page; typedef OStoreBTreeEntry T; public: /** Construction. */ explicit OStoreBTreeNodeObject (std::shared_ptr const & rxPage = std::shared_ptr()) : OStorePageObject (rxPage) {} /** External representation. */ virtual storeError guard (sal_uInt32 nAddr) override; virtual storeError verify (sal_uInt32 nAddr) const override; /** split. * * @param rxPageL [inout] left child to be split */ storeError split ( sal_uInt16 nIndexL, PageHolderObject< page > & rxPageL, OStorePageBIOS & rBIOS); /** remove (down to leaf node, recursive). */ storeError remove ( sal_uInt16 nIndexL, OStoreBTreeEntry & rEntryL, OStorePageBIOS & rBIOS); }; class OStoreBTreeRootObject : public store::OStoreBTreeNodeObject { typedef OStoreBTreeNodeObject base; typedef OStoreBTreeNodeData page; typedef OStoreBTreeEntry T; public: /** Construction. */ explicit OStoreBTreeRootObject (std::shared_ptr const & rxPage = std::shared_ptr()) : OStoreBTreeNodeObject (rxPage) {} storeError loadOrCreate ( sal_uInt32 nAddr, OStorePageBIOS & rBIOS); /** find_lookup (w/o split()). * Precond: root node page loaded. */ storeError find_lookup ( OStoreBTreeNodeObject & rNode, // [out] sal_uInt16 & rIndex, // [out] OStorePageKey const & rKey, OStorePageBIOS & rBIOS) const; /** find_insert (possibly with split()). * Precond: root node page loaded. */ storeError find_insert ( OStoreBTreeNodeObject & rNode, sal_uInt16 & rIndex, OStorePageKey const & rKey, OStorePageBIOS & rBIOS); private: /** testInvariant. * Precond: root node page loaded. */ void testInvariant (char const * message) const; /** change (Root). * * @param rxPageL [out] prev. root (needs split) */ storeError change ( PageHolderObject< page > & rxPageL, OStorePageBIOS & rBIOS); }; } // namespace store #endif // INCLUDED_STORE_SOURCE_STORTREE_HXX /* vim:set shiftwidth=4 softtabstop=4 expandtab: */ tro/mimo/mimo-6-4 LibreOffice 核心代码仓库文档基金会
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AgeCommit message (Expand)Author
2022-10-12tdf#151071 Revise Sifr (Update color to follow symbolic Adwaita)Rizal Muttaqin
2022-10-09tdf#151071 Revise SifrRizal Muttaqin
2020-03-25Sifr: Fix for tdf#31566: Add extra large localized iconsRizal Muttaqin
2020-01-28Sifr: Added SVG version of the Sifr Dark icon set (tdf#128849).rizmut
2019-10-20 tdf#127976, tdf#127977: Fix for navigator iconsRizal Muttaqin
2019-04-22tdf#89884 add language support icons to sifrandreas kainz