149 lines
4.4 KiB
C++
149 lines
4.4 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1999
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef _MDB_
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#include "mdb.h"
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#endif
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#ifndef _MORK_
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#include "mork.h"
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#endif
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#ifndef _MORKNODE_
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#include "morkNode.h"
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#endif
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#ifndef _MORKSTORE_
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#include "morkStore.h"
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#endif
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#ifndef _MORKPOOL_
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#include "morkPool.h"
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#endif
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#ifndef _MORKENV_
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#include "morkEnv.h"
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#endif
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#ifndef _MORKCELL_
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#include "morkCell.h"
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#endif
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//3456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789
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void
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morkCell::SetYarn(morkEnv* ev, const mdbYarn* inYarn, morkStore* ioStore)
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{
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morkAtom* atom = ioStore->YarnToAtom(ev, inYarn, PR_TRUE /* create */);
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if ( atom )
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this->SetAtom(ev, atom, ioStore->StorePool()); // refcounts atom
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}
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void
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morkCell::GetYarn(morkEnv* ev, mdbYarn* outYarn) const
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{
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MORK_USED_1(ev);
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mCell_Atom->GetYarn(outYarn);
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}
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void
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morkCell::AliasYarn(morkEnv* ev, mdbYarn* outYarn) const
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{
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MORK_USED_1(ev);
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mCell_Atom->AliasYarn(outYarn);
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}
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void
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morkCell::SetCellClean()
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{
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mork_column col = this->GetColumn();
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this->SetColumnAndChange(col, morkChange_kNil);
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}
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void
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morkCell::SetCellDirty()
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{
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mork_column col = this->GetColumn();
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this->SetColumnAndChange(col, morkChange_kAdd);
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}
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void
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morkCell::SetAtom(morkEnv* ev, morkAtom* ioAtom, morkPool* ioPool)
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// SetAtom() "acquires" the new ioAtom if non-nil, by calling AddCellUse()
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// to increase the refcount, and puts ioAtom into mCell_Atom. If the old
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// atom in mCell_Atom is non-nil, then it is "released" first by a call to
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// CutCellUse(), and if the use count then becomes zero, then the old atom
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// is deallocated by returning it to the pool ioPool. (And this is
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// why ioPool is a parameter to this method.) Note that ioAtom can be nil
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// to cause the cell to refer to nothing, and the old atom in mCell_Atom
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// can also be nil, and all the atom refcounting is handled correctly.
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//
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// Note that if ioAtom was just created, it typically has a zero use count
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// before calling SetAtom(). But use count is one higher after SetAtom().
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{
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morkAtom* oldAtom = mCell_Atom;
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if ( oldAtom != ioAtom ) // ioAtom is not already installed in this cell?
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{
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if ( oldAtom )
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{
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mCell_Atom = 0;
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if ( oldAtom->CutCellUse(ev) == 0 )
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{
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// this was zapping atoms still in use - comment out until davidmc
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// can figure out a better fix.
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// if ( ioPool )
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// {
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// if ( oldAtom->IsBook() )
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// ((morkBookAtom*) oldAtom)->CutBookAtomFromSpace(ev);
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// ioPool->ZapAtom(ev, oldAtom);
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// }
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// else
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// ev->NilPointerError();
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}
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}
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if ( ioAtom )
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ioAtom->AddCellUse(ev);
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mCell_Atom = ioAtom;
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}
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}
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//3456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789
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