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