str and StringBuilder

src/collections/List.h

@@ -1,6 +1,9 @@
 #pragma once
 #include "../std.h"
 
+// minimal max_len after initial (0)
+#define __List_min_size 16
+
 #define List_declare(T)\
     typedef struct List_##T {\
         T* data;\
@@ -14,35 +17,42 @@
     \
     List_##T List_##T##_alloc(u32 initial_len);\
     \
-    T* List_##T##_expand(List_##T* ptr);\
+    T* List_##T##_expand(List_##T* ptr, u32 count);\
     void List_##T##_push(List_##T* ptr, T value);\
+    void List_##T##_pushMany(List_##T* ptr, T* values, u32 count);\
 
 
 #define List_define(T)\
     List_##T List_##T##_alloc(u32 initial_len){\
         if(initial_len == 0)\
             return List_##T##_construct((T*)NULL, 0, 0);\
-        u32 max_Len = ALIGN_TO(initial_len, sizeof(void*)/sizeof(T));\
+        u32 max_len = ALIGN_TO(initial_len, sizeof(void*)/sizeof(T));\
         /* branchless version of max(max_len, __List_min_size) */\
         max_len += (max_len < __List_min_size) * (__List_min_size - max_len);\
         return List_##T##_construct((T*)malloc(initial_len * sizeof(T)), 0, max_len);\
     }\
     \
-    T* List_##T##_expand(List_##T* ptr){\
-        if(ptr->len == ptr->max_len){\
-            ptr->max_len *= 2;\
-            ptr->data = (T*)realloc(ptr->data, ptr->max_len * sizeof(T));\
-            ptr->max_len = max_len;\
+    T* List_##T##_expand(List_##T* ptr, u32 count){\
+        u32 occupied_len = ptr->len;\
+        u32 expanded_max_len = ptr->max_len;\
+        ptr->len += count;\
+        while(ptr->len > ptr->max_len){\
+            expanded_max_len *= 2;\
         }\
-        return &ptr->data[ptr->len++];\
+        ptr->data = (T*)realloc(ptr->data, expanded_max_len * sizeof(T));\
+        return ptr->data + occupied_len;\
     }\
     \
     void List_##T##_push(List_##T* ptr, T value){\
-        T* empty_cell_ptr = List_##T##_expand(ptr);\
+        T* empty_cell_ptr = List_##T##_expand(ptr, 1);\
         *empty_cell_ptr = value;\
     }\
+    \
+    void List_##T##_pushMany(List_##T* ptr, T* values, u32 count){\
+        T* empty_cell_ptr = List_##T##_expand(ptr, count);\
+        memcpy(empty_cell_ptr, values, count * sizeof(T));\
+    }\
 
-#define __List_min_size 16
 
 List_declare(cstr);
 List_declare(u32);