diff options
Diffstat (limited to '')
-rw-r--r-- | comm/mailnews/db/mork/morkCell.cpp | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/comm/mailnews/db/mork/morkCell.cpp b/comm/mailnews/db/mork/morkCell.cpp new file mode 100644 index 0000000000..5e0ca9128c --- /dev/null +++ b/comm/mailnews/db/mork/morkCell.cpp @@ -0,0 +1,99 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* 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/. */ + +#ifndef _MDB_ +# include "mdb.h" +#endif + +#ifndef _MORK_ +# include "mork.h" +#endif + +#ifndef _MORKNODE_ +# include "morkNode.h" +#endif + +#ifndef _MORKSTORE_ +# include "morkStore.h" +#endif + +#ifndef _MORKPOOL_ +# include "morkPool.h" +#endif + +#ifndef _MORKENV_ +# include "morkEnv.h" +#endif + +#ifndef _MORKCELL_ +# include "morkCell.h" +#endif + +// 456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789 + +void morkCell::SetYarn(morkEnv* ev, const mdbYarn* inYarn, morkStore* ioStore) { + morkAtom* atom = ioStore->YarnToAtom(ev, inYarn, true /* create */); + if (atom) this->SetAtom(ev, atom, ioStore->StorePool()); // refcounts atom +} + +void morkCell::GetYarn(morkEnv* ev, mdbYarn* outYarn) const { + MORK_USED_1(ev); + morkAtom::GetYarn(mCell_Atom, outYarn); +} + +void morkCell::AliasYarn(morkEnv* ev, mdbYarn* outYarn) const { + MORK_USED_1(ev); + morkAtom::AliasYarn(mCell_Atom, outYarn); +} + +void morkCell::SetCellClean() { + mork_column col = this->GetColumn(); + this->SetColumnAndChange(col, morkChange_kNil); +} + +void morkCell::SetCellDirty() { + mork_column col = this->GetColumn(); + this->SetColumnAndChange(col, morkChange_kAdd); +} + +void morkCell::SetAtom(morkEnv* ev, morkAtom* ioAtom, morkPool* ioPool) +// SetAtom() "acquires" the new ioAtom if non-nil, by calling AddCellUse() +// to increase the refcount, and puts ioAtom into mCell_Atom. If the old +// atom in mCell_Atom is non-nil, then it is "released" first by a call to +// CutCellUse(), and if the use count then becomes zero, then the old atom +// is deallocated by returning it to the pool ioPool. (And this is +// why ioPool is a parameter to this method.) Note that ioAtom can be nil +// to cause the cell to refer to nothing, and the old atom in mCell_Atom +// can also be nil, and all the atom refcounting is handled correctly. +// +// Note that if ioAtom was just created, it typically has a zero use count +// before calling SetAtom(). But use count is one higher after SetAtom(). +{ + morkAtom* oldAtom = mCell_Atom; + if (oldAtom != ioAtom) // ioAtom is not already installed in this cell? + { + if (oldAtom) { + mCell_Atom = 0; + if (oldAtom->CutCellUse(ev) == 0) { + // this was zapping atoms still in use - comment out until davidmc + // can figure out a better fix. + // if ( ioPool ) + // { + // if ( oldAtom->IsBook() ) + // ((morkBookAtom*) oldAtom)->CutBookAtomFromSpace(ev); + + // ioPool->ZapAtom(ev, oldAtom); + // } + // else + // ev->NilPointerError(); + } + } + if (ioAtom) ioAtom->AddCellUse(ev); + + mCell_Atom = ioAtom; + } +} + +// 456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789 |