arrays

include/platform/dsa/ci2_array.h

@@ -0,0 +1,62 @@
+/* - | Copyright | ------------------------------------------------------------
+   Copyright (c) 2026 Randy Jordan
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+ * --------------------------------------------------------------------------*/
+#ifndef CI2_ARRAY_H
+#define CI2_ARRAY_H
+
+struct CI2_Array
+{
+  void** items;
+  int cap;
+  int len;
+};
+typedef struct CI2_Array CI2_Array;
+
+void
+ci2_array_init(struct CI2_Array* a, int cap);
+
+int
+ci2_array_len(struct CI2_Array* a);
+
+void
+ci2_array_add(struct CI2_Array* a, void* p);
+
+void
+ci2_array_set(struct CI2_Array* a, int index, void* p);
+
+void*
+ci2_array_get(struct CI2_Array* a, int index);
+
+void
+ci2_array_delete(struct CI2_Array* a, int index);
+
+void
+ci2_array_free(struct CI2_Array* a);
+
+#define CI2_ARRAY_ADD(vec, item) ci2_array_add(&vec, (void*)item)
+#define CI2_ARRAY_SET(vec, id, item) ci2_array_set(&vec, id, (void*)item)
+#define CI2_ARRAY_GET(vec, type, id) (type) ci2_array_get(&vec, id)
+#define CI2_ARRAY_DELETE(vec, id) ci2_array_delete(&vec, id)
+#define CI2_ARRAY_TOTAL(vec) ci2_array_total(&vec)
+#define CI2_ARRAY_FREE(vec) ci2_array_free(&vec)
+
+#endif // ci2_array.h

include/platform/mem/ci2_arena.h

@@ -25,31 +25,37 @@ SOFTWARE.
 
 #include <stddef.h>
 
-struct Arena
+struct CI2_Arena
 {
   char* beg;
   char* end;
 };
-typedef struct Arena Arena;
+typedef struct CI2_Arena CI2_Arena;
 
 /* Initialize an Arena with an existing buffer  */
 extern void
-arena_back(struct Arena* a, char* buf, ptrdiff_t len);
+ci2_arena_back(struct CI2_Arena* a, char* buf, ptrdiff_t len);
 
 /* Allocate a new Arena */
-extern struct Arena
-arena_new(ptrdiff_t cap);
+extern struct CI2_Arena
+ci2_arena_new(ptrdiff_t cap);
 
 /* Get the current capacity of an Arena */
 extern ptrdiff_t
-arena_capacity(struct Arena a);
+ci2_arena_capacity(struct CI2_Arena a);
 
 /* Make an allocation from an Arena and do not zero.*/
 extern void*
-arena_malloc(struct Arena* a, ptrdiff_t size, ptrdiff_t align, ptrdiff_t count);
+ci2_arena_malloc(struct CI2_Arena* a,
+                 ptrdiff_t size,
+                 ptrdiff_t align,
+                 ptrdiff_t count);
 
 /* Make an allocation from an Arena and zero.*/
 extern void*
-arena_calloc(struct Arena* a, ptrdiff_t size, ptrdiff_t align, ptrdiff_t count);
+ci2_arena_calloc(struct CI2_Arena* a,
+                 ptrdiff_t size,
+                 ptrdiff_t align,
+                 ptrdiff_t count);
 
 #endif // ci2_arena.h

src/ci2_arena.c

@@ -28,7 +28,7 @@ SOFTWARE.
 
 /* Initialize an Arena with an existing buffer  */
 void
-arena_back(struct Arena* a, char* buf, ptrdiff_t len)
+ci2_arena_back(struct CI2_Arena* a, char* buf, ptrdiff_t len)
 {
   assert(a != NULL);
   assert(buf != NULL);
@@ -37,10 +37,10 @@ arena_back(struct Arena* a, char* buf, ptrdiff_t len)
 }
 
 /* Allocate a new Arena */
-struct Arena
-arena_new(ptrdiff_t cap)
+struct CI2_Arena
+ci2_arena_new(ptrdiff_t cap)
 {
-  struct Arena a = { 0 };
+  struct CI2_Arena a = { 0 };
   a.beg = malloc(cap);
   a.end = a.beg ? a.beg + cap : 0;
   return a;
@@ -48,7 +48,7 @@ arena_new(ptrdiff_t cap)
 
 /* Get the current capacity of an Arena */
 ptrdiff_t
-arena_capacity(struct Arena a)
+ci2_arena_capacity(struct CI2_Arena a)
 {
   ptrdiff_t res = a.end - a.beg;
   return res;
@@ -56,7 +56,10 @@ arena_capacity(struct Arena a)
 
 /* Make an allocation from an Arena and do not zero.*/
 void*
-arena_calloc(struct Arena* a, ptrdiff_t size, ptrdiff_t align, ptrdiff_t count)
+ci2_arena_calloc(struct CI2_Arena* a,
+                 ptrdiff_t size,
+                 ptrdiff_t align,
+                 ptrdiff_t count)
 {
   ptrdiff_t padding = -(uintptr_t)a->beg & (align - 1);
   ptrdiff_t available = a->end - a->beg - padding;
@@ -71,7 +74,10 @@ arena_calloc(struct Arena* a, ptrdiff_t size, ptrdiff_t align, ptrdiff_t count)
 
 /* Make an allocation from an Arena and zero.*/
 void*
-arena_malloc(struct Arena* a, ptrdiff_t size, ptrdiff_t align, ptrdiff_t count)
+ci2_arena_malloc(struct CI2_Arena* a,
+                 ptrdiff_t size,
+                 ptrdiff_t align,
+                 ptrdiff_t count)
 {
   ptrdiff_t padding = -(uintptr_t)a->beg & (align - 1);
   ptrdiff_t available = a->end - a->beg - padding;

src/ci2_array.c

@@ -0,0 +1,111 @@
+/* - | Copyright | ------------------------------------------------------------
+   Copyright (c) 2026 Randy Jordan
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+ * --------------------------------------------------------------------------*/
+#include "../include/platform/dsa/ci2_array.h"
+#include <stddef.h>
+#include <stdlib.h>
+
+void
+ci2_array_init(CI2_Array* v, int i)
+{
+  v->cap = i;
+  v->len = 0;
+  v->items = malloc(sizeof(void*) * v->cap);
+}
+
+int
+ci2_array_len(CI2_Array* v)
+{
+  return v->len;
+}
+
+static void
+ci2_array_resize(CI2_Array* v, int cap)
+{
+#ifdef DEBUG_ON
+  printf("ci2_array_resize: %d to %d\n", v->cap, cap);
+#endif
+  void** items = realloc(v->items, sizeof(void*) * cap);
+
+  if (items) {
+    v->items = items;
+    v->cap = cap;
+  }
+}
+
+void
+ci2_array_add(CI2_Array* v, void* item)
+{
+  if (v->cap == v->len)
+    ci2_array_resize(v, v->cap * 2);
+
+  v->items[v->len++] = item;
+}
+
+void
+ci2_array_set(CI2_Array* v, int index, void* item)
+{
+  if (index >= 0 && index < v->len)
+    v->items[index] = item;
+}
+
+void*
+ci2_array_get(CI2_Array* v, int index)
+{
+  if (index >= 0 && index < v->len)
+    return v->items[index];
+
+  return NULL;
+}
+
+void
+ci2_array_delete(struct CI2_Array* v, int index)
+{
+
+  if (index < 0 || index >= v->len)
+
+    return;
+
+  v->items[index] = NULL;
+
+  int i;
+
+  for (i = index; i < v->len - 1; i++) {
+
+    v->items[i] = v->items[i + 1];
+  }
+
+  v->items[i] = NULL;
+
+  v->len--;
+
+  if (v->len > 0 && v->len == v->cap / 4)
+
+    ci2_array_resize(v, v->cap / 2);
+}
+
+void
+ci2_array_free(struct CI2_Array* v)
+{
+
+  free(v->items);
+}