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69 lines
1.5 KiB
C++
69 lines
1.5 KiB
C++
/* Copyright (C) 2003 MySQL AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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#include <my_sys.h>
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/*
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A typesafe wrapper around DYNAMIC_ARRAY
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*/
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template <class Elem> class Dynamic_array
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{
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DYNAMIC_ARRAY array;
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public:
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Dynamic_array(uint prealloc=16, uint increment=16)
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{
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my_init_dynamic_array(&array, sizeof(Elem), prealloc, increment);
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}
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Elem& at(int idx)
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{
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return *(((Elem*)array.buffer) + idx);
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}
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Elem *front()
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{
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return (Elem*)array.buffer;
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}
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Elem *back()
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{
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return ((Elem*)array.buffer) + array.elements;
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}
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bool append(Elem &el)
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{
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return (insert_dynamic(&array, (uchar*)&el));
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}
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int elements()
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{
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return array.elements;
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}
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~Dynamic_array()
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{
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delete_dynamic(&array);
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}
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typedef int (*CMP_FUNC)(const Elem *el1, const Elem *el2);
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void sort(CMP_FUNC cmp_func)
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{
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my_qsort(array.buffer, array.elements, sizeof(Elem), (qsort_cmp)cmp_func);
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}
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};
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