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* SUPPORT, LICENSE: New files. * Numerous files touched as part of merging the 4.5 branch onto the mainline development trunk and ensuring that the script that cuts snapshots and releases works on the documentation.
272 lines
4.2 KiB
C++
272 lines
4.2 KiB
C++
/* inline/chain.inl
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*
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* This include file contains the bodies of the routines which are
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* associated with doubly linked chains and inlined.
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*
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* COPYRIGHT (c) 1988-2002.
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* On-Line Applications Research Corporation (OAR).
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* All rights reserved.
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*
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* $Id$
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*/
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#ifndef __INLINE_CHAIN_inl
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#define __INLINE_CHAIN_inl
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/*PAGE
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*
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* _Chain_Is_null
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*/
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STATIC INLINE boolean _Chain_Is_null(
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Chain_Control *the_chain
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)
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{
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return ( the_chain == NULL );
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}
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/*PAGE
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*
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* _Chain_Is_null_node
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*/
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STATIC INLINE boolean _Chain_Is_null_node(
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Chain_Node *the_node
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)
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{
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return ( the_node == NULL );
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}
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/*PAGE
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*
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* _Chain_Head
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*/
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STATIC INLINE Chain_Node *_Chain_Head(
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Chain_Control *the_chain
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)
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{
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return (Chain_Node *) the_chain;
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}
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/*PAGE
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*
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* _Chain_Tail
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*/
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STATIC INLINE Chain_Node *_Chain_Tail(
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Chain_Control *the_chain
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)
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{
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return (Chain_Node *) &the_chain->permanent_null;
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}
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/*PAGE
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*
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* _Chain_Is_empty
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*/
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STATIC INLINE boolean _Chain_Is_empty(
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Chain_Control *the_chain
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)
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{
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return ( the_chain->first == _Chain_Tail( the_chain ) );
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}
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/*PAGE
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*
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* _Chain_Is_first
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*/
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STATIC INLINE boolean _Chain_Is_first(
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Chain_Node *the_node
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)
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{
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return ( the_node->previous == NULL );
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}
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/*PAGE
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*
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* _Chain_Is_last
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*/
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STATIC INLINE boolean _Chain_Is_last(
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Chain_Node *the_node
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)
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{
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return ( the_node->next == NULL );
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}
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/*PAGE
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*
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* _Chain_Has_only_one_node
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*/
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STATIC INLINE boolean _Chain_Has_only_one_node(
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Chain_Control *the_chain
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)
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{
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return ( the_chain->first == the_chain->last );
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}
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/*PAGE
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*
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* _Chain_Is_head
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*/
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STATIC INLINE boolean _Chain_Is_head(
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Chain_Control *the_chain,
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Chain_Node *the_node
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)
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{
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return ( the_node == _Chain_Head( the_chain ) );
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}
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/*PAGE
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*
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* _Chain_Is_tail
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*/
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STATIC INLINE boolean _Chain_Is_tail(
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Chain_Control *the_chain,
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Chain_Node *the_node
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)
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{
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return ( the_node == _Chain_Tail( the_chain ) );
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}
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/*PAGE
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*
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* Chain_Initialize_empty
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*/
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STATIC INLINE void _Chain_Initialize_empty(
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Chain_Control *the_chain
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)
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{
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the_chain->first = _Chain_Tail( the_chain );
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the_chain->permanent_null = NULL;
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the_chain->last = _Chain_Head( the_chain );
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}
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/*PAGE
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*
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* _Chain_Extract_unprotected
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*/
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STATIC INLINE void _Chain_Extract_unprotected(
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Chain_Node *the_node
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)
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{
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Chain_Node *next;
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Chain_Node *previous;
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next = the_node->next;
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previous = the_node->previous;
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next->previous = previous;
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previous->next = next;
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}
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/*PAGE
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*
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* _Chain_Get_first_unprotected
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*/
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STATIC INLINE Chain_Node *_Chain_Get_first_unprotected(
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Chain_Control *the_chain
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)
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{
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Chain_Node *return_node;
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Chain_Node *new_first;
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return_node = the_chain->first;
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new_first = return_node->next;
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the_chain->first = new_first;
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new_first->previous = _Chain_Head( the_chain );
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return return_node;
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}
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/*PAGE
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*
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* Chain_Get_unprotected
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*/
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STATIC INLINE Chain_Node *_Chain_Get_unprotected(
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Chain_Control *the_chain
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)
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{
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if ( !_Chain_Is_empty( the_chain ) )
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return _Chain_Get_first_unprotected( the_chain );
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else
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return NULL;
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}
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/*PAGE
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*
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* _Chain_Insert_unprotected
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*/
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STATIC INLINE void _Chain_Insert_unprotected(
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Chain_Node *after_node,
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Chain_Node *the_node
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)
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{
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Chain_Node *before_node;
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the_node->previous = after_node;
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before_node = after_node->next;
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after_node->next = the_node;
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the_node->next = before_node;
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before_node->previous = the_node;
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}
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/*PAGE
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*
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* _Chain_Append_unprotected
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*/
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STATIC INLINE void _Chain_Append_unprotected(
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Chain_Control *the_chain,
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Chain_Node *the_node
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)
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{
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Chain_Node *old_last_node;
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the_node->next = _Chain_Tail( the_chain );
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old_last_node = the_chain->last;
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the_chain->last = the_node;
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old_last_node->next = the_node;
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the_node->previous = old_last_node;
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}
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/*PAGE
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*
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* _Chain_Prepend_unprotected
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*/
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STATIC INLINE void _Chain_Prepend_unprotected(
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Chain_Control *the_chain,
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Chain_Node *the_node
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)
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{
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_Chain_Insert_unprotected( _Chain_Head( the_chain ), the_node );
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}
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/*PAGE
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*
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* _Chain_Prepend
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*/
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STATIC INLINE void _Chain_Prepend(
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Chain_Control *the_chain,
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Chain_Node *the_node
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)
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{
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_Chain_Insert( _Chain_Head( the_chain ), the_node );
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}
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#endif
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/* end of include file */
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