v1.4.4
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276
lib/linux/include/ftlist.h
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276
lib/linux/include/ftlist.h
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/***************************************************************************/
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/* */
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/* ftlist.h */
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/* */
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/* Generic list support for FreeType (specification). */
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/* */
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/* Copyright 1996-2001, 2003, 2007, 2010, 2013, 2014 by */
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/* David Turner, Robert Wilhelm, and Werner Lemberg. */
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/* */
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/* This file is part of the FreeType project, and may only be used, */
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/* modified, and distributed under the terms of the FreeType project */
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/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
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/* this file you indicate that you have read the license and */
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/* understand and accept it fully. */
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/* */
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/***************************************************************************/
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/*************************************************************************/
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/* */
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/* This file implements functions relative to list processing. Its */
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/* data structures are defined in `freetype.h'. */
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/* */
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/*************************************************************************/
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#ifndef __FTLIST_H__
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#define __FTLIST_H__
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#include <ft2build.h>
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#include FT_FREETYPE_H
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#ifdef FREETYPE_H
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#error "freetype.h of FreeType 1 has been loaded!"
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#error "Please fix the directory search order for header files"
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#error "so that freetype.h of FreeType 2 is found first."
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#endif
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FT_BEGIN_HEADER
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/*************************************************************************/
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/* */
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/* <Section> */
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/* list_processing */
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/* */
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/* <Title> */
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/* List Processing */
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/* */
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/* <Abstract> */
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/* Simple management of lists. */
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/* */
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/* <Description> */
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/* This section contains various definitions related to list */
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/* processing using doubly-linked nodes. */
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/* */
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/* <Order> */
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/* FT_List */
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/* FT_ListNode */
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/* FT_ListRec */
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/* FT_ListNodeRec */
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/* */
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/* FT_List_Add */
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/* FT_List_Insert */
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/* FT_List_Find */
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/* FT_List_Remove */
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/* FT_List_Up */
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/* FT_List_Iterate */
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/* FT_List_Iterator */
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/* FT_List_Finalize */
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/* FT_List_Destructor */
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/* */
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/*************************************************************************/
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/*************************************************************************/
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/* */
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/* <Function> */
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/* FT_List_Find */
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/* */
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/* <Description> */
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/* Find the list node for a given listed object. */
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/* */
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/* <Input> */
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/* list :: A pointer to the parent list. */
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/* data :: The address of the listed object. */
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/* */
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/* <Return> */
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/* List node. NULL if it wasn't found. */
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/* */
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FT_EXPORT( FT_ListNode )
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FT_List_Find( FT_List list,
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void* data );
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/*************************************************************************/
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/* */
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/* <Function> */
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/* FT_List_Add */
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/* */
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/* <Description> */
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/* Append an element to the end of a list. */
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/* */
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/* <InOut> */
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/* list :: A pointer to the parent list. */
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/* node :: The node to append. */
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/* */
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FT_EXPORT( void )
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FT_List_Add( FT_List list,
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FT_ListNode node );
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/*************************************************************************/
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/* */
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/* <Function> */
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/* FT_List_Insert */
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/* */
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/* <Description> */
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/* Insert an element at the head of a list. */
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/* */
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/* <InOut> */
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/* list :: A pointer to parent list. */
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/* node :: The node to insert. */
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/* */
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FT_EXPORT( void )
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FT_List_Insert( FT_List list,
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FT_ListNode node );
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/*************************************************************************/
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/* */
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/* <Function> */
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/* FT_List_Remove */
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/* */
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/* <Description> */
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/* Remove a node from a list. This function doesn't check whether */
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/* the node is in the list! */
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/* */
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/* <Input> */
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/* node :: The node to remove. */
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/* */
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/* <InOut> */
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/* list :: A pointer to the parent list. */
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/* */
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FT_EXPORT( void )
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FT_List_Remove( FT_List list,
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FT_ListNode node );
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/*************************************************************************/
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/* */
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/* <Function> */
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/* FT_List_Up */
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/* */
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/* <Description> */
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/* Move a node to the head/top of a list. Used to maintain LRU */
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/* lists. */
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/* */
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/* <InOut> */
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/* list :: A pointer to the parent list. */
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/* node :: The node to move. */
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/* */
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FT_EXPORT( void )
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FT_List_Up( FT_List list,
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FT_ListNode node );
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/*************************************************************************/
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/* */
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/* <FuncType> */
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/* FT_List_Iterator */
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/* */
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/* <Description> */
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/* An FT_List iterator function that is called during a list parse */
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/* by @FT_List_Iterate. */
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/* */
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/* <Input> */
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/* node :: The current iteration list node. */
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/* */
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/* user :: A typeless pointer passed to @FT_List_Iterate. */
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/* Can be used to point to the iteration's state. */
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/* */
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typedef FT_Error
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(*FT_List_Iterator)( FT_ListNode node,
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void* user );
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/*************************************************************************/
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/* */
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/* <Function> */
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/* FT_List_Iterate */
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/* */
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/* <Description> */
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/* Parse a list and calls a given iterator function on each element. */
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/* Note that parsing is stopped as soon as one of the iterator calls */
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/* returns a non-zero value. */
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/* */
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/* <Input> */
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/* list :: A handle to the list. */
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/* iterator :: An iterator function, called on each node of the list. */
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/* user :: A user-supplied field that is passed as the second */
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/* argument to the iterator. */
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/* */
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/* <Return> */
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/* The result (a FreeType error code) of the last iterator call. */
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/* */
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FT_EXPORT( FT_Error )
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FT_List_Iterate( FT_List list,
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FT_List_Iterator iterator,
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void* user );
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/*************************************************************************/
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/* */
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/* <FuncType> */
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/* FT_List_Destructor */
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/* */
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/* <Description> */
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/* An @FT_List iterator function that is called during a list */
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/* finalization by @FT_List_Finalize to destroy all elements in a */
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/* given list. */
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/* */
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/* <Input> */
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/* system :: The current system object. */
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/* */
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/* data :: The current object to destroy. */
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/* */
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/* user :: A typeless pointer passed to @FT_List_Iterate. It can */
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/* be used to point to the iteration's state. */
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/* */
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typedef void
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(*FT_List_Destructor)( FT_Memory memory,
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void* data,
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void* user );
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/*************************************************************************/
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/* */
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/* <Function> */
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/* FT_List_Finalize */
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/* */
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/* <Description> */
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/* Destroy all elements in the list as well as the list itself. */
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/* */
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/* <Input> */
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/* list :: A handle to the list. */
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/* */
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/* destroy :: A list destructor that will be applied to each element */
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/* of the list. Set this to NULL if not needed. */
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/* */
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/* memory :: The current memory object that handles deallocation. */
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/* */
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/* user :: A user-supplied field that is passed as the last */
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/* argument to the destructor. */
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/* */
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/* <Note> */
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/* This function expects that all nodes added by @FT_List_Add or */
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/* @FT_List_Insert have been dynamically allocated. */
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/* */
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FT_EXPORT( void )
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FT_List_Finalize( FT_List list,
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FT_List_Destructor destroy,
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FT_Memory memory,
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void* user );
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/* */
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FT_END_HEADER
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#endif /* __FTLIST_H__ */
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/* END */
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