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1 /*
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2 * Copyright 2010 OpenSourceCodeStewardshipFoundation
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3 *
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4 * Licensed under BSD
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5 */
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6
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7
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8
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9 #include <stdio.h>
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10 #include <malloc.h>
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11
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12 #include "Vector.h"
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13
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14
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15 /*make a struct with the sizes and a pointer to the
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16 * array, but hide a reverse pointer at the front of the array that
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17 * points back to the vector struct -- that way, can pass around the
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18 * array when doing work on elements, but when need to increase size,
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19 * get pointer to vector struct and use that, which will change the
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20 * ptr to the array in the vector struc, and return the new pointer..
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21 * so from the point of changing size on, have the correct array ptr,
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22 * and also all other places that initiate a sequence later will get
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23 * the array ptr from the vector struct at the sequence start..
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24 */
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25 bool8
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26 addToVect( void *ptrToElem, Vector *vect )
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27 { int32 numPtrsInVect, sizeOfVect;
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28
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29 /*
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30 numPtrsInVect = *(vect -1); //num ptrs is "hidden" in front
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31 sizeOfVect = *(vect -2);
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32 */
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33 numPtrsInVect = vect->numPtrsInArray;
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34 sizeOfVect = vect->sizeOfArray;
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35
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36 if( numPtrsInVect >= sizeOfVect ) return FALSE;
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37
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38 vect->arrayOfPtrs[numPtrsInVect] = ptrToElem;
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39 vect->numPtrsInArray++;
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40 }
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41
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42 void
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43 increaseSizeOfVect( Vector *vect )
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44 { int32 oldSizeOfArray, newSizeOfArray, i;
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45 void **newArray, **oldArray;
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46
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47 oldSizeOfArray = vect->sizeOfArray;
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48 newSizeOfArray = oldSizeOfArray * 2;
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49 oldArray = vect->arrayOfPtrs;
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50 newArray = malloc( (newSizeOfArray + 1) * sizeof(void *) );
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51 *newArray = vect;
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52 newArray++;
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53 for( i = 0; i < oldSizeOfArray; i++ )
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54 {
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55 newArray[i] = oldArray[i];
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56 }
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57 vect->arrayOfPtrs = newArray;
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58 vect->sizeOfArray = newSizeOfArray;
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59
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60 free( oldArray -1 );
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61 }
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62
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63 /*
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64 bool8
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65 forAllInVectDo( ptrToFnTakesVectElemAsVoid* )
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66 {
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67 return success;
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68 }
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69 */
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