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1 | /** \file arraylist.h | ||
2 | * Describes the ArrayList class. | ||
3 | *@author Mike Buland | ||
4 | */ | ||
5 | #ifndef ARRAY_LIST_H | ||
6 | #define ARRAY_LIST_H | ||
7 | |||
8 | #include "list.h" | ||
9 | |||
10 | /** A simple list which uses an array. This is a great choice if you won't do | ||
11 | * a lot of adding and deleting and need a fast random access list. Otherwise | ||
12 | * use the LinkedList. | ||
13 | *@author Mike Buland | ||
14 | */ | ||
15 | class ArrayList : public List | ||
16 | { | ||
17 | public: | ||
18 | /** Creates an arraylist with some pre-defined specs spelled out. | ||
19 | *@param initSize the inital number of elements to allocate. | ||
20 | *@param growByFactor How much to increase the size of the array by | ||
21 | * each time we run out of room. | ||
22 | */ | ||
23 | ArrayList( int initSize=100, int growByFactor=10 ); | ||
24 | /** | ||
25 | * Destroy the ArrayList | ||
26 | */ | ||
27 | virtual ~ArrayList(); | ||
28 | |||
29 | void *getAt( int nIndex ); | ||
30 | void append( void *pData ); | ||
31 | void insertBefore( void *pData, int nPos = 0 ); | ||
32 | int getSize( ); | ||
33 | bool isEmpty( ); | ||
34 | void deleteAt( int nIndex ); | ||
35 | void empty(); | ||
36 | void setSize( int nNewSize ); | ||
37 | void setAt( int nIndex, void *pData ); | ||
38 | |||
39 | private: | ||
40 | /** | ||
41 | * Checks to see if the system needs to be resized, if it does, this will | ||
42 | * automatically resize based on your parameters. | ||
43 | */ | ||
44 | void checkResize(); | ||
45 | |||
46 | /** | ||
47 | * Resize the system to a specified size. If it is larger, then all data | ||
48 | * will be retained, if smaller the elements at the end will be cut off. | ||
49 | *@param newSize The number of elements to include after resizing. | ||
50 | */ | ||
51 | void resizeTo( int newSize ); | ||
52 | |||
53 | /** | ||
54 | * Actual master array of pointers. This is done to follow the List specs. | ||
55 | * All data transactions are performed with pointers or compatable | ||
56 | * primitive data-types. | ||
57 | */ | ||
58 | void **apData; | ||
59 | |||
60 | /** | ||
61 | * The number of filled in elements in the array. This is the practical | ||
62 | * real size of the ArrayList for all userspace applications. | ||
63 | */ | ||
64 | int nSize; | ||
65 | |||
66 | /** | ||
67 | * The number of elements allocated in memory. Not all of these have to be | ||
68 | * filled in, and it is usually larger than nSize so that adding and | ||
69 | * deleting elements is fast and easy. | ||
70 | */ | ||
71 | int nCapacity; | ||
72 | |||
73 | /** | ||
74 | * The amount to grow by whenever the array needs resizing. | ||
75 | */ | ||
76 | int nGrowByFactor; | ||
77 | }; | ||
78 | |||
79 | #endif | ||
80 | |||