str and StringBuilder

src/string/StringBuilder.h

@@ -0,0 +1,32 @@
+#pragma once
+
+#if __cplusplus
+extern "C" {
+#endif
+
+#include "../collections/List.h"
+#include "str.h"
+
+typedef struct StringBuilder {
+	List_u8 buffer;
+} StringBuilder;
+
+static inline StringBuilder StringBuilder_construct(u32 initial_size) { 
+    return (StringBuilder){ .buffer = List_u8_alloc(initial_size) }; 
+}
+void StringBuilder_free(StringBuilder* b);
+
+void StringBuilder_removeFromEnd(StringBuilder* b, u32 count);
+void StringBuilder_append_char(StringBuilder* b, char c);
+void StringBuilder_append_cstr(StringBuilder* b, char* s);
+void StringBuilder_append_string(StringBuilder* b, str s);
+void StringBuilder_append_i64(StringBuilder* b, i64 a);
+void StringBuilder_append_u64(StringBuilder* b, u64 a);
+void StringBuilder_append_f64(StringBuilder* b, f64 a);
+
+// adds '\0' to the buffer and returns pointer to buffer content
+str StringBuilder_getStr(StringBuilder* b);
+
+#if __cplusplus
+}
+#endif