Switch vector to use size_t for its array sizes and indices.

include/vec.h

@@ -18,11 +18,11 @@ struct vec_s {
   /**
    * The maximum size of the vector.
    */
-  int capacity;
+  size_t capacity;
   /**
    * The current number of items in the vector.
    */
-  int size;
+  size_t size;
 };
 
 typedef struct vec_s vec;
@@ -87,7 +87,7 @@ int vec_foreach(vec* vec, void* data, compare_func compare, foreach_func foreach
  * @param index the index to retreive a value from
  * @return pointer to the value, or, if the index is out of bounds (or there is nothing there) NULL.
  */
-void* vec_index(vec* vec, int index);
+void* vec_index(vec* vec, size_t index);
 /**
  * Clears the vector, removing all elements from it
  * but not resizing it down.

src/vec.c

@@ -44,16 +44,16 @@ libds_result vec_add(vec* v, void* data) {
   return result;
 }
 void vec_remove(vec* v, void* data) {
-  int index = 0;
+  size_t index = 0;
   void** data_array = v->data;
   while (index < v->size && data_array[index]) {
-    int search_ahead = 0;
+    size_t search_ahead = 0;
     while(data_array[index + search_ahead] == data){
       search_ahead++;
     }
 
     if(search_ahead){
-      int remaining_elements = v->size - (index + search_ahead);
+      size_t remaining_elements = v->size - (index + search_ahead);
       memmove(data_array + index, data_array + index + search_ahead, remaining_elements);
       v->size -= search_ahead;
     }
@@ -62,7 +62,7 @@ void vec_remove(vec* v, void* data) {
 }
 
 void* vec_find(vec* v, void* data, compare_func compare) {
-  int index = 0;
+  size_t index = 0;
   void* found = NULL;
   void** data_array = v->data;
   while (index < v->size && found == NULL) {
@@ -75,7 +75,7 @@ void* vec_find(vec* v, void* data, compare_func compare) {
 }
 int vec_foreach(vec* v, void* data, compare_func compare, foreach_func foreach,
                 ...) {
-  int index = 0;
+  size_t index = 0;
   int return_code = 0;
   void** data_array = v->data;
   va_list args;
@@ -90,7 +90,7 @@ int vec_foreach(vec* v, void* data, compare_func compare, foreach_func foreach,
   return return_code;
 }
 
-void* vec_index(vec* v, int index) {
+void* vec_index(vec* v, size_t index) {
   void* to_return = NULL;
   if (index < v->capacity && index >= 0) {
     to_return = ((void**) v->data)[index];