This code example shows how get an iterator to a container and use it to iterate through the container objects. It can also be found at speect/engine/examples/containers/list_iteration_example.c, and be compiled with the WANT_EXAMPLES build option.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 | #include <stdio.h>
#include "speect.h"
int main()
{
s_erc error = S_SUCCESS;
SList *list = NULL;
SIterator *itr = NULL;
SObject *a = NULL;
SObject *b = NULL;
SObject *c = NULL;
/*
* initialize speect
*/
error = speect_init(NULL);
if (error != S_SUCCESS)
{
printf("Failed to initialize Speect\n");
return 1;
}
/* Create a new list */
list = S_LIST(S_NEW(SListList, &error));
if (S_CHK_ERR(&error, S_CONTERR,
"main",
"Failed to create new list"))
goto quit;
/*
* get iterator to list, should be NULL as there are no objects
* in the list
*/
itr = S_ITERATOR_GET(list, &error);
if (S_CHK_ERR(&error, S_CONTERR,
"main",
"Failed to get iterator to list"))
goto quit;
/* Create some objects and put the into the list */
a = SObjectSetInt(10, &error);
if (S_CHK_ERR(&error, S_CONTERR,
"main",
"Failed to set int object"))
goto quit;
b = SObjectSetFloat(3.14, &error);
if (S_CHK_ERR(&error, S_CONTERR,
"main",
"Failed to set float object"))
goto quit;
c = SObjectSetString("hello world", &error);
if (S_CHK_ERR(&error, S_CONTERR,
"main",
"Failed to set string object"))
goto quit;
SListPush(list, a, &error);
if (S_CHK_ERR(&error, S_CONTERR,
"main",
"Failed to add object to list"))
goto quit;
else
a = NULL; /* object belongs to list now, we don't want to
* delete it directly.
*/
SListPush(list, b, &error);
if (S_CHK_ERR(&error, S_CONTERR,
"main",
"Failed to add object to list"))
goto quit;
else
b = NULL; /* object belongs to list now, we don't want to
* delete it directly.
*/
SListPush(list, c, &error);
if (S_CHK_ERR(&error, S_CONTERR,
"main",
"Failed to add object to list"))
goto quit;
else
c = NULL; /* object belongs to list now, we don't want to
* delete it directly.
*/
/*
* get iterator to list, should not be NULL as there are now
* objects in the list
*/
itr = S_ITERATOR_GET(list, &error);
if (S_CHK_ERR(&error, S_CONTERR,
"main",
"Failed to get iterator to list"))
goto quit;
/* iterate through list objects and print them to stdout */
for (/* NOP */; itr != NULL; itr = SIteratorNext(itr))
{
char *buf;
const SObject *tmp;
tmp = SIteratorObject(itr, &error);
if (S_CHK_ERR(&error, S_CONTERR,
"main",
"Failed to get list iterator object"))
goto quit;
buf = SObjectPrint(tmp, &error);
if (S_CHK_ERR(&error, S_CONTERR,
"main",
"Failed to print object"))
goto quit;
printf("list object = %s\n", buf);
S_FREE(buf);
}
quit:
if (list != NULL)
S_DELETE(list, "main", &error);
if (itr != NULL)
S_DELETE(itr, "main", &error);
if (a != NULL)
S_DELETE(a, "main", &error);
if (b != NULL)
S_DELETE(b, "main", &error);
if (c != NULL)
S_DELETE(c, "main", &error);
/*
* quit speect
*/
error = speect_quit();
if (error != S_SUCCESS)
{
printf("Call to 'speect_quit' failed\n");
return 1;
}
return 0;
}
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