NyLPC_cPtrTbl.c

00001 /*********************************************************************************
00002  * PROJECT: MiMic
00003  * --------------------------------------------------------------------------------
00004  *
00005  * This file is part of MiMic
00006  * Copyright (C)2011 Ryo Iizuka
00007  *
00008  * MiMic is free software: you can redistribute it and/or modify
00009  * it under the terms of the GNU Lesser General Public License as published
00010  * by　the Free Software Foundation, either version 3 of the　License, or
00011  * (at your option) any later version.
00012  *
00013  * This program is distributed in the hope that it will be useful,
00014  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00015  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00016  * GNU General Public License for more details.
00017  *
00018  * You should have received a copy of the GNU Lesser General Public License
00019  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
00020  *
00021  * For further information please contact.
00022  *  http://nyatla.jp/
00023  *  <airmail(at)ebony.plala.or.jp> or <nyatla(at)nyatla.jp>
00024  *
00025  *********************************************************************************/
00026 #include "NyLPC_cPtrTbl.h"
00027 
00028 void NyLPC_cPtrTbl_initialize(NyLPC_TcPtrTbl_t* i_inst,void** i_buf,NyLPC_TUInt16 i_size)
00029 {
00030     i_inst->size=i_size;
00031     i_inst->len=0;
00032     i_inst->buf=i_buf;
00033     memset(i_inst->buf,0,i_size*sizeof(void*));
00034 }
00035 void* NyLPC_cPtrTbl_get(NyLPC_TcPtrTbl_t* i_inst,NyLPC_TUInt16 i_index)
00036 {
00037     return i_inst->buf[i_index];
00038 }
00039 
00040 void NyLPC_cPtrTbl_set(NyLPC_TcPtrTbl_t* i_inst,NyLPC_TUInt16 i_index,void* i_val)
00041 {
00042     void** p=(i_inst->buf+i_index);
00043     if(*p==NULL){
00044         if(i_val!=NULL){
00045             //投入
00046             i_inst->len++;
00047         }
00048     }else{
00049         if(i_val==NULL){
00050             //消去
00051             i_inst->len--;
00052         }
00053     }
00054     //値を反映
00055     *p=i_val;
00056     return;
00057 }
00058 
00059 NyLPC_TInt16 NyLPC_cPtrTbl_add(NyLPC_TcPtrTbl_t* i_inst,void* i_val)
00060 {
00061     int i;
00062     void** p=i_inst->buf;
00063 
00064     for(i=i_inst->size-1;i>=0;i--){
00065         if(*(p+i)==NULL){
00066             NyLPC_cPtrTbl_set(i_inst,i,i_val);
00067             return i;
00068         }
00069     }
00070     return -1;
00071 }
00072 
00073 /**
00074  * i_indexの要素に、NULLをセットして削除します。
00075  */
00076 void NyLPC_cPtrTbl_remove(NyLPC_TcPtrTbl_t* i_inst,NyLPC_TUInt16 i_index)
00077 {
00078     NyLPC_cPtrTbl_set(i_inst,i_index,NULL);
00079     return;
00080 }
00081 
00082 NyLPC_TInt16 NyLPC_cPtrTbl_getIndex(NyLPC_TcPtrTbl_t* i_inst,void* i_val)
00083 {
00084     int i;
00085     void** p=i_inst->buf;
00086 
00087     for(i=i_inst->size-1;i>=0;i--){
00088         if(*(p+i)==i_val){
00089             return i;
00090         }
00091     }
00092     return -1;
00093 }
00094 
00095 /**
00096  * 現在の要素数を返します。
00097  * この数は、テーブルに存在する有効なポインタの数です。
00098  */
00099 NyLPC_TInt16 NyLPC_cPtrTbl_getLength(NyLPC_TcPtrTbl_t* i_inst)
00100 {
00101     return i_inst->len;
00102 }
00103 
00104 NyLPC_TBool NyLPC_cPtrTbl_hasEmpty(NyLPC_TcPtrTbl_t* i_inst)
00105 {
00106     return i_inst->len<i_inst->size;
00107 }