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Foundation/c_ArrayList.c

@@ -75,9 +75,8 @@ c_err_t c_ArrayList_Resize(c_ArrayList_t* self, c_size_t new_capacity) {
 
 c_err_t c_ArrayList_Add(c_ArrayList_t* self, const void* item) {
     if (!self || !item) return C_ERR_PARAM;
-    if (self->size>=self->capacity) {
-        c_err_t err = c_ArrayList_Resize(self, (self->capacity==0)?4:(self->capacity<<1));
-        if (err!=C_ERR_OK) return err;
+    if (self->size >= self->capacity) {
+        return C_ERR_FULL;
     }
     char* target = (char*)self->array + (self->size * self->item_size);
     memcpy(target, item, self->item_size);
@@ -106,8 +105,11 @@ c_err_t c_ArrayList_Read(const c_ArrayList_t* self, c_size_t index, void* out_it
     return C_ERR_OK;
 }
 
-c_err_t c_ArrayList_Remove(c_ArrayList_t* self, c_size_t index, void* out_item) {
-    if (!self || index>=self->size) return C_ERR_PARAM;
+c_err_t c_ArrayList_RemoveAt(c_ArrayList_t* self, c_size_t index, void* out_item) {
+    if (!self) return C_ERR_PARAM;
+    if (self->size == 0) return C_ERR_EMPTY;
+    if (index >= self->size) return C_ERR_OUTOFBOUND;
+
     char* target = (char*)self->array + (index * self->item_size);
 
     if (out_item) {
@@ -124,3 +126,57 @@ c_err_t c_ArrayList_Remove(c_ArrayList_t* self, c_size_t index, void* out_item)
     return C_ERR_OK;
 }
 
+c_err_t c_ArrayList_Set(const c_ArrayList_t* self, c_size_t index, const void* item) {
+    if (!self || !item) return C_ERR_PARAM;
+    if (index >= self->size) return C_ERR_OUTOFBOUND;
+    char* target = (char*)self->array + (index * self->item_size);
+    memcpy(target, item, self->item_size);
+    return C_ERR_OK;
+}
+
+c_err_t c_ArrayList_PopBack(c_ArrayList_t* self, void* out_item) {
+    if (!self ) return C_ERR_PARAM;
+    if (self->size==0) return C_ERR_EMPTY;
+
+    self->size--;
+
+    if (out_item) {
+        char* target = (char*)self->array + (self->size) * self->item_size;
+        memcpy(out_item, target, self->item_size);
+    }
+
+    return C_ERR_OK;
+}
+
+c_err_t c_ArrayList_PopBackResize(c_ArrayList_t* self, void* out_item) {
+    if (!self ) return C_ERR_PARAM;
+    if (self->size==0) return C_ERR_EMPTY;
+
+    self->size--;
+
+    if (out_item) {
+        char* target = (char*)self->array + (self->size) * self->item_size;
+        memcpy(out_item, target, self->item_size);
+    }
+
+    // 🌟【弹性内存缩容锁】：若当前存量过低 (N <= Capacity/4) 且长于基本配额，主动腰斩退还内存给系统
+    if (self->size > 0 && self->size <= (self->capacity >> 2)) {
+        c_ArrayList_Resize(self, self->capacity >> 1);
+    }
+
+    return C_ERR_OK;
+}
+
+c_err_t c_ArrayList_ResizeAdd(c_ArrayList_t* self, const void* item) {
+    if (!self || !item) return C_ERR_PARAM;
+
+    if (self->size >= self->capacity) {
+        c_err_t err = c_ArrayList_Resize(self, (self->capacity==0)?4:(self->capacity<<1));
+        if (err!=C_ERR_OK) return err;
+    }
+
+    char* target = (char*)self->array + (self->size * self->item_size);
+    memcpy(target, item, self->item_size);
+    self->size++;
+    return C_ERR_OK;
+}