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gecko-dev/lib/libaddr/abobjset.cpp

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
/* file: abobjset.c
** Some portions might derive from public domain IronDoc interfaces.
**
** Changes:
** <1> 05Jan1998 first implementation
** <0> 23Dec1997 first interface draft
*/
#ifndef _ABTABLE_
#include "abtable.h"
#endif
#ifndef _ABMODEL_
#include "abmodel.h"
#endif
/*3456789_123456789_123456789_123456789_123456789_123456789_123456789_12345678*/
/* ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- */
#if AB_CONFIG_TRACE_orDEBUG_orPRINT
static const char* ab_ObjectSet_kClassName /*i*/ = "ab_ObjectSet";
#endif /* end AB_CONFIG_TRACE_orDEBUG_orPRINT*/
// ````` ````` ````` ````` ````` ````` ````` `````
// virtual ab_Object methods
char* ab_ObjectSet::ObjectAsString(ab_Env* ev, char* outXmlBuf) const /*i*/
{
AB_USED_PARAMS_1(ev);
#if AB_CONFIG_TRACE_orDEBUG_orPRINT
sprintf(outXmlBuf,
"<ab:object:set:str me=\"^%lX\" rc=\"%lu\" a=\"%.9s\" u=\"%.9s\" cl=\"%lu\" s=\"#%lX\"/>",
(long) this, // me=\"^%lX\"
(unsigned long) mObject_RefCount, // rc=\"%lu\"
this->GetObjectAccessAsString(), // ac=\"%.9s\"
this->GetObjectUsageAsString(), // us=\"%.9s\"
(unsigned long) this->count_links(), // cnt=\"%lu\"
(unsigned long) mObjectSet_Seed // seed=\"#%lX\"
);
#else
*outXmlBuf = 0; /* empty string */
#endif /*AB_CONFIG_TRACE_orDEBUG_orPRINT*/
return outXmlBuf;
}
void ab_ObjectSet::CloseObject(ab_Env* ev) /*i*/
{
if ( this->IsOpenObject() )
{
this->MarkClosing();
this->CloseObjectSet(ev);
this->MarkShut();
}
}
void ab_ObjectSet::PrintObject(ab_Env* ev, ab_Printer* ioPrinter) const /*i*/
{
#ifdef AB_CONFIG_PRINT
ioPrinter->PutString(ev, "<ab:object:set>");
char xmlBuf[ ab_Object_kXmlBufSize + 2 ];
ioPrinter->PutString(ev, this->ObjectAsString(ev, xmlBuf));
if ( this->IsOpenObject() )
{
ioPrinter->PushDepth(ev); // indent all objects in the list
const AB_Deque* d = &mObjectSet_Objects;
AB_Link* link;
for ( link = AB_Deque_First(d); link; link = AB_Deque_After(d, link) )
{
ab_Object* obj = ((ab_ObjectLink*) link)->mObjectLink_Object;
// We call ObjectAsString() instead of PrintObject() in order to
// avoid getting caught in cyclic loops of inter-object reference:
ioPrinter->PutString(ev, obj->ObjectAsString(ev, xmlBuf));
}
ioPrinter->PopDepth(ev); // stop indentation
}
ioPrinter->NewlineIndent(ev, /*count*/ 1);
ioPrinter->PutString(ev, "</ab:object:set>");
#endif /*AB_CONFIG_PRINT*/
}
ab_ObjectSet::~ab_ObjectSet() /*i*/
{
AB_ASSERT(mObjectSet_Member==0);
AB_ASSERT(mObjectSet_NextLink==0);
}
// ````` ````` ````` ````` ````` ````` ````` `````
// non-poly ab_ObjectSet methods
ab_ObjectSet::ab_ObjectSet(const ab_Usage& inUsage) /*i*/
: ab_Object(inUsage)
, mObjectSet_Member( 0 )
, mObjectSet_NextLink( 0 )
{
AB_Deque* deque = &mObjectSet_Objects;
AB_Deque_Init(deque);
// Seed values work better (are slightly less likely to match accidentally
// when they should not) if initialized randomly, so XOR various addresses.
// And keep any original bits in the XOR as well, just for good measure.
mObjectSet_Seed ^= (ab_num) this ^ (ab_num) &deque;
}
void ab_ObjectSet::CloseObjectSet(ab_Env* ev) /*i*/
{
#ifdef AB_CONFIG_TRACE
if ( ev->DoTrace() )
this->TraceObject(ev);
#endif /*AB_CONFIG_TRACE*/
ab_Object* obj = mObjectSet_Member;
if ( mObjectSet_Member )
{
mObjectSet_Member = 0;
obj->ReleaseObject(ev);
}
mObjectSet_NextLink = 0;
if ( this->IsOpenObject() )
{
this->MarkClosing();
this->CutAllObjects(ev);
this->MarkShut();
}
else if ( !this->IsObject() )
ev->NewAbookFault(ab_Object_kFaultNotObject);
}
void ab_ObjectSet::TraceSet(ab_Env* ev) /*i*/
{
#ifdef AB_CONFIG_TRACE
ab_Env_BeginMethod(ev, ab_ObjectSet_kClassName, "TraceSet")
this->TraceObject(ev);
const AB_Deque* d = &mObjectSet_Objects;
AB_Link* link;
for ( link = AB_Deque_First(d); link; link = AB_Deque_After(d, link) )
{
ab_Object* obj = ((ab_ObjectLink*) link)->mObjectLink_Object;
obj->TraceObject(ev);
}
ab_Env_EndMethod(ev)
#else /*AB_CONFIG_TRACE*/
AB_USED_PARAMS_1(ev);
#endif /*AB_CONFIG_TRACE*/
}
// ````` iteration methods `````
ab_Object* ab_ObjectSet::FirstMember(ab_Env* ev) /*i*/
{
ab_Object* outObject = 0;
ab_Env_BeginMethod(ev, ab_ObjectSet_kClassName, "FirstMember")
if ( this->IsOpenOrClosingObject() )
{
ab_Object* obj = mObjectSet_Member;
if ( obj )
{
mObjectSet_Member = 0;
obj->ReleaseObject(ev);
}
mObjectSet_NextLink = 0;
AB_Deque* deque = &mObjectSet_Objects;
AB_Link* link = AB_Deque_First(deque);
if ( link )
{
obj = ((ab_ObjectLink*) link)->mObjectLink_Object;
if ( obj && obj->AcquireObject(ev) )
{
mObjectSet_Member = outObject = obj;
link = AB_Deque_After(deque, link);
mObjectSet_NextLink = (ab_ObjectLink*) link;
}
}
}
else ev->NewAbookFault(ab_Object_kFaultNotOpenOrClosing);
ab_Env_EndMethod(ev)
return outObject;
}
ab_Object* ab_ObjectSet::NextMember(ab_Env* ev) /*i*/
{
ab_Object* outObject = 0;
ab_Env_BeginMethod(ev, ab_ObjectSet_kClassName, "NextMember")
if ( this->IsOpenOrClosingObject() )
{
ab_Object* obj = mObjectSet_Member;
if ( obj )
{
mObjectSet_Member = 0;
obj->ReleaseObject(ev);
}
AB_Link* link = (AB_Link*) mObjectSet_NextLink;
if ( link )
{
obj = mObjectSet_NextLink->mObjectLink_Object;
if ( obj && obj->AcquireObject(ev) )
{
AB_Deque* deque = &mObjectSet_Objects;
mObjectSet_Member = outObject = obj;
link = AB_Deque_After(deque, link);
mObjectSet_NextLink = (ab_ObjectLink*) link;
}
}
}
else ev->NewAbookFault(ab_Object_kFaultNotOpenOrClosing);
ab_Env_EndMethod(ev)
return outObject;
}
ab_ref_count ab_ObjectSet::AddObject(ab_Env* ev, ab_Object* ioObject) /*i*/
{
ab_ref_count outCount = 0;
ab_Env_BeginMethod(ev, ab_ObjectSet_kClassName, "AddObject")
#ifdef AB_CONFIG_TRACE
if ( ev->DoTrace() )
ioObject->TraceObject(ev);
#endif /*AB_CONFIG_TRACE*/
if ( IsOpenObject() )
{
#ifdef AB_CONFIG_TRACE
this->TraceSet(ev);
#endif /*AB_CONFIG_TRACE*/
ab_ObjectLink* link = this->get_link(ioObject);
if ( link ) /* have this object as list member? */
{
outCount = ++link->mObjectLink_RefCount; /* bump refcount */
}
else
{
ioObject->AcquireObject(ev);
if ( ev->Good() )
{
link = new ab_ObjectLink(ioObject);
if ( link )
{
AB_Deque* deque = &mObjectSet_Objects;
outCount = link->mObjectLink_RefCount; /* refcount == 1 */
AB_Deque_AddFirst(deque, link); /* to front of list */
++mObjectSet_Seed; /* list changed */
}
else ev->NewAbookFault(ab_ObjectSet_kFaultOutOfMemory);
}
}
#ifdef AB_CONFIG_TRACE
this->TraceSet(ev);
#endif /*AB_CONFIG_TRACE*/
}
else ev->NewAbookFault(ab_Object_kFaultNotOpen);
#ifdef AB_CONFIG_TRACE
if ( ev->DoTrace() )
ev->Trace( "<ab:object:set:add:obj $$ obj=\"^%lX\" rc=\"%lu\"/>",
(long) ioObject, (long) outCount);
#endif /*AB_CONFIG_TRACE*/
ab_Env_EndMethod(ev)
return outCount;
}
ab_ref_count ab_ObjectSet::HasObject(ab_Env* ev, /*i*/
const ab_Object* inObject) const
{
ab_ref_count outCount = 0;
ab_Env_BeginMethod(ev, ab_ObjectSet_kClassName, "HasObject")
#ifdef AB_CONFIG_TRACE
if ( ev->DoTrace() )
inObject->TraceObject(ev);
#endif /*AB_CONFIG_TRACE*/
if ( IsOpenObject() )
{
ab_ObjectLink* link = this->get_link(inObject);
if ( link ) /* have this object as list member? */
{
outCount = link->mObjectLink_RefCount; /* return refcount */
}
}
else ev->NewAbookFault(ab_Object_kFaultNotOpen);
#ifdef AB_CONFIG_TRACE
if ( ev->DoTrace() )
ev->Trace( "<ab:object:set:has:obj $$ obj=\"^%lX\" rc=\"%lu\"/>",
(long) inObject, (long) outCount);
#endif /*AB_CONFIG_TRACE*/
ab_Env_EndMethod(ev)
return outCount;
}
ab_ref_count ab_ObjectSet::SubObject(ab_Env* ev, ab_Object* ioObject) /*i*/
{
ab_ref_count outCount = 0;
ab_Env_BeginMethod(ev, ab_ObjectSet_kClassName, "SubObject")
#ifdef AB_CONFIG_TRACE
if ( ev->DoTrace() )
ioObject->TraceObject(ev);
#endif /*AB_CONFIG_TRACE*/
if ( IsOpenObject() )
{
#ifdef AB_CONFIG_TRACE
this->TraceSet(ev);
#endif /*AB_CONFIG_TRACE*/
ab_ObjectLink* link = this->get_link(ioObject);
if ( link ) /* have this object as list member? */
{
outCount = --link->mObjectLink_RefCount; /* reduce refcount */
if ( outCount == 0 ) /* last reference removed? */
{
this->cut_link(ev, link);
}
}
#ifdef AB_CONFIG_TRACE
this->TraceSet(ev);
#endif /*AB_CONFIG_TRACE*/
}
else ev->NewAbookFault(ab_Object_kFaultNotOpen);
#ifdef AB_CONFIG_TRACE
if ( ev->DoTrace() )
ev->Trace( "<ab:object:set:sub:obj $$ obj=\"^%lX\" rc=\"%lu\"/>",
(long) ioObject, (long) outCount);
#endif /*AB_CONFIG_TRACE*/
ab_Env_EndMethod(ev)
return outCount;
}
ab_ref_count ab_ObjectSet::CutObject(ab_Env* ev, ab_Object* ioObject) /*i*/
{
ab_ref_count outCount = 0;
ab_Env_BeginMethod(ev, ab_ObjectSet_kClassName, "CutObject")
#ifdef AB_CONFIG_TRACE
if ( ev->DoTrace() )
ioObject->TraceObject(ev);
#endif /*AB_CONFIG_TRACE*/
if ( IsOpenObject() )
{
#ifdef AB_CONFIG_TRACE
this->TraceSet(ev);
#endif /*AB_CONFIG_TRACE*/
ab_ObjectLink* link = this->get_link(ioObject);
if ( link ) /* have this object as list member? */
{
outCount = link->mObjectLink_RefCount; /* return refcount */
this->cut_link(ev, link);
}
#ifdef AB_CONFIG_TRACE
this->TraceSet(ev);
#endif /*AB_CONFIG_TRACE*/
}
else ev->NewAbookFault(ab_Object_kFaultNotOpen);
// do not trace object after cut, since it might now be destroyed
#ifdef AB_CONFIG_TRACE
if ( ev->DoTrace() )
ev->Trace( "<ab:object:set:cut:obj $$ obj=\"^%lX\" rc=\"%lu\"/>",
(long) ioObject, (long) outCount);
#endif /*AB_CONFIG_TRACE*/
ab_Env_EndMethod(ev)
return outCount;
}
ab_num ab_ObjectSet::CutAllObjects(ab_Env* ev) /*i*/
{
ab_num outCount = 0;
ab_Env_BeginMethod(ev, ab_ObjectSet_kClassName, "CutAllObjects")
if ( this->IsObject() )
{
AB_Deque* deque = &mObjectSet_Objects;
AB_Link* link;
while ( (link = AB_Deque_RemoveFirst(deque) ) != 0 )
{
++outCount;
++mObjectSet_Seed; // list changed
ab_ObjectLink* objLink = (ab_ObjectLink*) link;
#ifdef AB_CONFIG_TRACE
if ( ev->DoTrace() )
ev->Trace( "<ab:object:set:cut:all:obj $$ obj=\"^%lX\" rc=\"%lu\"/>",
(long) objLink->mObjectLink_Object,
(long) objLink->mObjectLink_RefCount);
#endif /*AB_CONFIG_TRACE*/
objLink->mObjectLink_Object->ReleaseObject(ev);
AB_Link_Clear(link);
delete objLink;
}
}
else ev->NewAbookFault(ab_Object_kFaultNotObject);
#ifdef AB_CONFIG_TRACE
if ( ev->DoTrace() )
ev->Trace( "<ab:object:set:cut:all cnt=\"%lu\"/>",
(long) outCount);
#endif /*AB_CONFIG_TRACE*/
ab_Env_EndMethod(ev)
return outCount;
}
ab_num ab_ObjectSet::CountObjects(ab_Env* ev) const /*i*/
{
ab_num outCount = 0;
ab_Env_BeginMethod(ev, ab_ObjectSet_kClassName, "CountObjects")
if ( this->IsOpenOrClosingObject() )
{
outCount = this->count_links();
}
else if ( !this->IsShutObject() )
ev->NewAbookFault(ab_Object_kFaultNotObject);
#ifdef AB_CONFIG_TRACE
if ( ev->DoTrace() )
ev->Trace( "<ab:object:set:count:objs cnt=\"%lu\"/>",
(long) outCount);
#endif /*AB_CONFIG_TRACE*/
ab_Env_EndMethod(ev)
return outCount;
}
ab_Object* ab_ObjectSet::CutAnyObject(ab_Env* ev) /*i*/
{
ab_Object* outObject = 0;
ab_Env_BeginMethod(ev, ab_ObjectSet_kClassName, "CutAnyObject")
if ( IsOpenOrClosingObject() )
{
AB_Deque* deque = &mObjectSet_Objects;
AB_Link* link;
if ( (link = AB_Deque_RemoveFirst(deque) ) != 0 )
{
++mObjectSet_Seed; // list changed
ab_ObjectLink* objLink = (ab_ObjectLink*) link;
outObject = objLink->mObjectLink_Object;
if ( !outObject->ReleaseObject(ev) )
outObject = 0; // might have just been destroyed
AB_Link_Clear(link);
delete objLink;
}
}
else ev->NewAbookFault(ab_Object_kFaultNotOpenOrClosing);
#ifdef AB_CONFIG_TRACE
if ( ev->DoTrace() && outObject )
outObject->TraceObject(ev);
#endif /*AB_CONFIG_TRACE*/
ab_Env_EndMethod(ev)
return outObject;
}
ab_bool ab_ObjectSet::DoObjects(ab_Env* ev, /*i*/
ab_Object_mAction inAction, void* ioClosure) const
{
ab_bool outDoObjects = AB_kFalse;
ab_Env_BeginMethod(ev, ab_ObjectSet_kClassName, "DoObjects")
if ( IsOpenOrClosingObject() )
{
ab_num startSeed = mObjectSet_Seed;
const AB_Deque* d = &mObjectSet_Objects;
AB_Link* link;
for ( link = AB_Deque_First(d); link; link = AB_Deque_After(d, link) )
{
if ( mObjectSet_Seed == startSeed )
{
ab_Object* obj = ((ab_ObjectLink*) link)->mObjectLink_Object;
if ( (*inAction)(obj, ev, ioClosure) )
{
outDoObjects = AB_kTrue;
break; /* end loop after action returns true */
}
}
else ev->NewAbookFault(ab_ObjectSet_kFaultIterOutOfSync);
}
}
else ev->NewAbookFault(ab_Object_kFaultNotOpenOrClosing);
ab_Env_EndMethod(ev)
return outDoObjects;
}
// ````` ````` ````` ````` ````` ````` ````` `````
// protected ab_Model view list manipulation
ab_ObjectLink* ab_ObjectSet::get_link(const ab_Object* ioObject) const /*i*/
{
const AB_Deque* d = &mObjectSet_Objects;
AB_Link* link;
for ( link = AB_Deque_First(d); link; link = AB_Deque_After(d, link) )
{
if ( ioObject == ((ab_ObjectLink*) link)->mObjectLink_Object )
return (ab_ObjectLink*) link; /* return found match */
}
return (ab_ObjectLink*) 0; /* not found */
}
void ab_ObjectSet::cut_link(ab_Env* ev, ab_ObjectLink* ioLink) /*i*/
{
AB_Link* link = ioLink; /* supertype */
if ( ioLink && ioLink == mObjectSet_NextLink ) // breaking iteration?
{
AB_Deque* d = &mObjectSet_Objects;
mObjectSet_NextLink = (ab_ObjectLink*) AB_Deque_After(d, link);
}
AB_Link_Remove(link); /* remove ioLink from list */
AB_Link_Clear(link); /* more likely to cause errors if accessed now */
ioLink->mObjectLink_Object->ReleaseObject(ev);
delete ioLink;
++mObjectSet_Seed; /* watcher list changed */
}
ab_num ab_ObjectSet::count_links() const /*i*/
{
ab_num outCount = 0;
const AB_Deque* d = &mObjectSet_Objects;
AB_Link* link;
for ( link = AB_Deque_First(d); link; link = AB_Deque_After(d, link) )
++outCount;
return outCount;
}
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