469 lines
16 KiB
C++
469 lines
16 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose:
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//
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//=============================================================================
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#include "dmelementdictionary.h"
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#include "datamodel/dmelement.h"
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#include "datamodel/dmattribute.h"
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#include "datamodel/dmattributevar.h"
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#include "datamodel/idatamodel.h"
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#include "datamodel.h"
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//-----------------------------------------------------------------------------
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// Constructor
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//-----------------------------------------------------------------------------
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CDmElementDictionary::CDmElementDictionary()
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: m_idmap( 1024, 0, 0, DmIdPair_t::Compare, DmIdPair_t::HashKey )
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{
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}
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//-----------------------------------------------------------------------------
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// Clears the dictionary
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//-----------------------------------------------------------------------------
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void CDmElementDictionary::Clear()
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{
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m_Dict.Purge();
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m_Attributes.Purge();
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m_ArrayAttributes.Purge();
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m_elementsToDelete.Purge();
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}
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//-----------------------------------------------------------------------------
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// Inserts an element into the table
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//-----------------------------------------------------------------------------
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DmElementDictHandle_t CDmElementDictionary::InsertElement( CDmElement *pElement )
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{
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// Insert it into the reconnection table
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return m_Dict.AddToTail( pElement ? pElement->GetHandle() : DMELEMENT_HANDLE_INVALID );
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}
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//-----------------------------------------------------------------------------
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// Returns a particular element
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//-----------------------------------------------------------------------------
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CDmElement *CDmElementDictionary::GetElement( DmElementDictHandle_t handle )
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{
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if ( handle == ELEMENT_DICT_HANDLE_INVALID )
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return NULL;
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return g_pDataModel->GetElement( m_Dict[ handle ] );
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}
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//-----------------------------------------------------------------------------
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// Adds an attribute to the fixup list
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//-----------------------------------------------------------------------------
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void CDmElementDictionary::AddAttribute( CDmAttribute *pAttribute, const DmObjectId_t &objectId )
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{
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if ( m_elementsToDelete.Find( pAttribute->GetOwner()->GetHandle() ) != m_elementsToDelete.InvalidIndex() )
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return; // don't add attributes if their element is being deleted
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int i = m_Attributes.AddToTail();
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m_Attributes[i].m_nType = AT_OBJECTID;
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m_Attributes[i].m_pAttribute = pAttribute;
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CopyUniqueId( objectId, &m_Attributes[i].m_ObjectId );
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}
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//-----------------------------------------------------------------------------
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// Adds an element of an attribute array to the fixup list
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//-----------------------------------------------------------------------------
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void CDmElementDictionary::AddArrayAttribute( CDmAttribute *pAttribute, DmElementDictHandle_t hElement )
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{
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if ( m_elementsToDelete.Find( pAttribute->GetOwner()->GetHandle() ) != m_elementsToDelete.InvalidIndex() )
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return; // don't add attributes if their element is being deleted
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int i = m_ArrayAttributes.AddToTail();
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m_ArrayAttributes[i].m_nType = AT_ELEMENT;
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m_ArrayAttributes[i].m_pAttribute = pAttribute;
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m_ArrayAttributes[i].m_hElement = hElement;
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}
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void CDmElementDictionary::AddArrayAttribute( CDmAttribute *pAttribute, const DmObjectId_t &objectId )
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{
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if ( m_elementsToDelete.Find( pAttribute->GetOwner()->GetHandle() ) != m_elementsToDelete.InvalidIndex() )
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return; // don't add attributes if their element is being deleted
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int i = m_ArrayAttributes.AddToTail();
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m_ArrayAttributes[i].m_nType = AT_OBJECTID;
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m_ArrayAttributes[i].m_pAttribute = pAttribute;
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CopyUniqueId( objectId, &m_ArrayAttributes[i].m_ObjectId );
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}
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//-----------------------------------------------------------------------------
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//
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//-----------------------------------------------------------------------------
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void CDmElementDictionary::RemoveAttributeInfosOfElement( AttributeList_t &attributes, DmElementHandle_t hElement )
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{
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while ( attributes.Count() > 0 && attributes.Tail().m_pAttribute->GetOwner()->GetHandle() == hElement )
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{
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attributes.Remove( attributes.Count() - 1 );
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}
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}
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DmElementHandle_t CDmElementDictionary::SetElementId( DmElementDictHandle_t hDictHandle, const DmObjectId_t &newId, DmConflictResolution_t idConflictResolution )
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{
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DmElementHandle_t hElement = m_Dict[ hDictHandle ];
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CDmElement *pElement = g_pDataModel->GetElement( hElement );
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Assert( pElement );
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if ( !pElement )
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return DMELEMENT_HANDLE_INVALID;
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const DmObjectId_t &oldId = pElement->GetId();
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if ( idConflictResolution == CR_FORCE_COPY )
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{
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m_idmap.Insert( DmIdPair_t( newId, oldId ) ); // map the newId back to the old id, and keep the old id
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return hElement;
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}
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DmElementHandle_t newHandle = g_pDataModelImp->ChangeElementId( hElement, oldId, newId );
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if ( newHandle != DMELEMENT_HANDLE_INVALID )
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{
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// if ChangeElementId returns a handle, the id has been changed
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if ( newHandle != hElement )
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{
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int i = m_Dict.Find( hElement );
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if ( i != m_Dict.InvalidIndex() )
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{
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m_Dict[ i ] = newHandle;
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}
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}
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return newHandle; // either keeping the old handle, with the new id, or found a new handle associated with that new id
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}
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// id not changed because that id is already in use
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if ( idConflictResolution == CR_DELETE_NEW )
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{
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DmElementHandle_t hExistingElement = g_pDataModel->FindElement( newId );
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int i = m_elementsToDelete.AddToTail( );
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m_elementsToDelete[i].m_hDictHandle = hDictHandle;
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m_elementsToDelete[i].m_hElementToDelete = hElement;
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m_elementsToDelete[i].m_hReplacementElement = hExistingElement;
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// remove all element ref attributes read in before the id (typically none)
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RemoveAttributeInfosOfElement( m_Attributes, hElement );
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RemoveAttributeInfosOfElement( m_ArrayAttributes, hElement );
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return DMELEMENT_HANDLE_INVALID;
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}
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if ( idConflictResolution == CR_DELETE_OLD )
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{
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DmElementHandle_t hExistingElement = g_pDataModel->FindElement( newId );
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Assert( hExistingElement != DMELEMENT_HANDLE_INVALID );
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if ( hExistingElement == DMELEMENT_HANDLE_INVALID )
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return DMELEMENT_HANDLE_INVALID; // unexpected error in ChangeElementId (failed due to something other than a conflict)
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g_pDataModelImp->DeleteElement( hExistingElement, HR_NEVER ); // need to keep the handle around until ChangeElemendId
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newHandle = g_pDataModelImp->ChangeElementId( hElement, oldId, newId );
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Assert( newHandle == hExistingElement );
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int i = m_Dict.Find( hElement );
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if ( i != m_Dict.InvalidIndex() )
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{
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m_Dict[ i ] = newHandle;
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}
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return newHandle;
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}
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if ( idConflictResolution == CR_COPY_NEW )
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{
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m_idmap.Insert( DmIdPair_t( newId, oldId ) ); // map the newId back to the old id, and keep the old id
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return hElement;
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}
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Assert( 0 );
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return DMELEMENT_HANDLE_INVALID;
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}
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//-----------------------------------------------------------------------------
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// Finds an element into the table
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//-----------------------------------------------------------------------------
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DmElementDictHandle_t CDmElementDictionary::FindElement( CDmElement *pElement )
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{
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return m_Dict.Find( pElement ? pElement->GetHandle() : DMELEMENT_HANDLE_INVALID );
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}
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//-----------------------------------------------------------------------------
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// Hook up all element references (which were unserialized as object ids)
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//-----------------------------------------------------------------------------
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void CDmElementDictionary::HookUpElementAttributes()
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{
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int n = m_Attributes.Count();
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for ( int i = 0; i < n; ++i )
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{
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Assert( m_Attributes[i].m_pAttribute->GetType() == AT_ELEMENT );
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Assert( m_Attributes[i].m_nType == AT_OBJECTID );
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UtlHashHandle_t h = m_idmap.Find( DmIdPair_t( m_Attributes[i].m_ObjectId ) );
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DmObjectId_t &id = h == m_idmap.InvalidHandle() ? m_Attributes[i].m_ObjectId : m_idmap[ h ].m_newId;
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// search id->handle table (both loaded and unloaded) for id, and if not found, create a new handle, map it to the id and return it
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DmElementHandle_t hElement = g_pDataModelImp->FindOrCreateElementHandle( id );
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m_Attributes[i].m_pAttribute->SetValue<DmElementHandle_t>( hElement );
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}
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}
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//-----------------------------------------------------------------------------
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// Hook up all element array references
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//-----------------------------------------------------------------------------
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void CDmElementDictionary::HookUpElementArrayAttributes()
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{
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// Find unique array attributes; we need to clear them all before adding stuff.
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// This clears them of stuff added during their construction phase.
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int n = m_ArrayAttributes.Count();
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CUtlRBTree< CDmAttribute*, unsigned short > lookup( 0, n, DefLessFunc(CDmAttribute*) );
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for ( int i = 0; i < n; ++i )
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{
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Assert( m_ArrayAttributes[i].m_pAttribute->GetType() == AT_ELEMENT_ARRAY );
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CDmAttribute *pElementArray = m_ArrayAttributes[i].m_pAttribute;
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CDmrElementArray<> array( pElementArray );
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if ( lookup.Find( pElementArray ) == lookup.InvalidIndex() )
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{
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array.RemoveAll();
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lookup.Insert( pElementArray );
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}
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}
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for ( int i = 0; i < n; ++i )
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{
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Assert( m_ArrayAttributes[i].m_pAttribute->GetType() == AT_ELEMENT_ARRAY );
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CDmrElementArray<> array( m_ArrayAttributes[i].m_pAttribute );
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if ( m_ArrayAttributes[i].m_nType == AT_ELEMENT )
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{
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CDmElement *pElement = GetElement( m_ArrayAttributes[i].m_hElement );
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array.AddToTail( pElement );
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}
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else
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{
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UtlHashHandle_t h = m_idmap.Find( DmIdPair_t( m_ArrayAttributes[i].m_ObjectId ) );
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DmObjectId_t &id = ( h == m_idmap.InvalidHandle() ) ? m_ArrayAttributes[i].m_ObjectId : m_idmap[ h ].m_newId;
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// search id->handle table (both loaded and unloaded) for id, and if not found, create a new handle, map it to the id and return it
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DmElementHandle_t hElement = g_pDataModelImp->FindOrCreateElementHandle( id );
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int nIndex = array.AddToTail();
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array.SetHandle( nIndex, hElement );
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}
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}
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}
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//-----------------------------------------------------------------------------
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// Hook up all element references (which were unserialized as object ids)
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//-----------------------------------------------------------------------------
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void CDmElementDictionary::HookUpElementReferences()
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{
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int nElementsToDelete = m_elementsToDelete.Count();
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for ( int i = 0; i < nElementsToDelete; ++i )
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{
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DmElementDictHandle_t hDictIndex = m_elementsToDelete[i].m_hDictHandle;
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DmElementHandle_t hElement = m_Dict[ hDictIndex ];
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g_pDataModelImp->DeleteElement( hElement );
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m_Dict[ hDictIndex ] = m_elementsToDelete[i].m_hReplacementElement;
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}
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HookUpElementArrayAttributes();
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HookUpElementAttributes();
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}
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//-----------------------------------------------------------------------------
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//
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// Element dictionary used in serialization
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//
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//-----------------------------------------------------------------------------
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CDmElementSerializationDictionary::CDmElementSerializationDictionary() :
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m_Dict( 1024, 0, CDmElementSerializationDictionary::LessFunc )
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{
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}
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//-----------------------------------------------------------------------------
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// Used to sort the list of elements
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//-----------------------------------------------------------------------------
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bool CDmElementSerializationDictionary::LessFunc( const ElementInfo_t &lhs, const ElementInfo_t &rhs )
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{
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return lhs.m_pElement < rhs.m_pElement;
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}
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//-----------------------------------------------------------------------------
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// Finds the handle of the element
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//-----------------------------------------------------------------------------
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DmElementDictHandle_t CDmElementSerializationDictionary::Find( CDmElement *pElement )
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{
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ElementInfo_t find;
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find.m_pElement = pElement;
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return m_Dict.Find( find );
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}
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//-----------------------------------------------------------------------------
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// Creates the list of all things to serialize
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//-----------------------------------------------------------------------------
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void CDmElementSerializationDictionary::BuildElementList_R( CDmElement *pElement, bool bFlatMode, bool bIsRoot )
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{
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if ( !pElement )
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return;
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// FIXME: Right here we should ask the element if it's an external
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// file reference and exit immediately if so.
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// This means we've already encountered this guy.
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// Therefore, he can never be a root element
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DmElementDictHandle_t h = Find( pElement );
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if ( h != m_Dict.InvalidIndex() )
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{
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m_Dict[h].m_bRoot = true;
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return;
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}
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ElementInfo_t info;
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info.m_bRoot = bFlatMode || bIsRoot;
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info.m_pElement = pElement;
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m_Dict.Insert( info );
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for ( CDmAttribute *pAttribute = pElement->FirstAttribute(); pAttribute; pAttribute = pAttribute->NextAttribute() )
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{
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if ( pAttribute->IsFlagSet( FATTRIB_DONTSAVE ) )
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continue;
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switch( pAttribute->GetType() )
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{
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case AT_ELEMENT:
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{
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CDmElement *pChild = pAttribute->GetValueElement<CDmElement>();
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if ( !pChild || pChild->GetFileId() != pElement->GetFileId() )
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break;
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BuildElementList_R( pChild, bFlatMode, false );
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}
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break;
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case AT_ELEMENT_ARRAY:
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{
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CDmrElementArray<> array( pAttribute );
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int nCount = array.Count();
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for ( int i = 0; i < nCount; ++i )
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{
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CDmElement *pChild = array[i];
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if ( !pChild || pChild->GetFileId() != pElement->GetFileId() )
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break;
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BuildElementList_R( pChild, bFlatMode, false );
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}
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}
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break;
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}
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}
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}
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void CDmElementSerializationDictionary::BuildElementList( CDmElement *pElement, bool bFlatMode )
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{
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BuildElementList_R( pElement, bFlatMode, true );
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}
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//-----------------------------------------------------------------------------
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// Should I inline the serialization of this element?
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//-----------------------------------------------------------------------------
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bool CDmElementSerializationDictionary::ShouldInlineElement( CDmElement *pElement )
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{
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// This means we've already encountered this guy.
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// Therefore, he can never be a root element
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DmElementDictHandle_t h = Find( pElement );
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if ( h != m_Dict.InvalidIndex() )
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return !m_Dict[h].m_bRoot;
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// If we didn't find the element, it means it's a reference to an external
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// element (or it's NULL), so don't inline ie.
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return false;
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}
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//-----------------------------------------------------------------------------
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// Clears the dictionary
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//-----------------------------------------------------------------------------
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void CDmElementSerializationDictionary::Clear()
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{
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m_Dict.RemoveAll();
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}
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//-----------------------------------------------------------------------------
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// How many root elements do we have?
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//-----------------------------------------------------------------------------
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int CDmElementSerializationDictionary::RootElementCount() const
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{
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int nCount = 0;
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DmElementDictHandle_t h = m_Dict.FirstInorder();
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while( h != m_Dict.InvalidIndex() )
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{
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if ( m_Dict[h].m_bRoot )
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{
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++nCount;
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}
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h = m_Dict.NextInorder( h );
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}
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return nCount;
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}
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//-----------------------------------------------------------------------------
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// Iterates over all root elements to serialize
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//-----------------------------------------------------------------------------
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DmElementDictHandle_t CDmElementSerializationDictionary::FirstRootElement() const
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{
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// NOTE - this code only works with BlockMemory or Memory (NOT FixedMemory)
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// NOTE: I don't have to use First/NextInorder here because there
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// are guaranteed to be no removals from the dictionary.
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// Also, using inorder traversal won't get my actual root element to be first in the file
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int nCount = m_Dict.Count();
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for ( DmElementDictHandle_t h = 0; h < nCount; ++h )
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{
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if ( m_Dict[h].m_bRoot )
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return h;
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}
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return ELEMENT_DICT_HANDLE_INVALID;
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}
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DmElementDictHandle_t CDmElementSerializationDictionary::NextRootElement( DmElementDictHandle_t h ) const
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{
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// NOTE - this code only works with BlockMemory or Memory (NOT FixedMemory)
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// NOTE: I don't have to use First/NextInorder here because there
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// are guaranteed to be no removals from the dictionary.
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// Also, using inorder traversal won't get my actual root element to be first in the file
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++h;
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int nCount = m_Dict.Count();
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for ( ; h < nCount; ++h )
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{
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if ( m_Dict[h].m_bRoot )
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return h;
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}
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return ELEMENT_DICT_HANDLE_INVALID;
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}
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CDmElement *CDmElementSerializationDictionary::GetRootElement( DmElementDictHandle_t h )
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{
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Assert( m_Dict[h].m_bRoot );
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return m_Dict[h].m_pElement;
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}
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