butano: more overloads added to string::assign and string::append

butano/include/bn_string.h

@@ -498,6 +498,37 @@ class istring : public istring_base
         return *this;
     }
 
+    /**
+     * @brief Replaces the contents of the istring.
+     * @param view string_view replacement.
+     * @param position Starting character index.
+     * @return Reference to this.
+     */
+    constexpr istring& assign(const string_view& view, size_type position)
+    {
+        size_type view_size = view.size();
+        BN_ASSERT(position >= 0 && position <= view_size, "Invalid position: ", position, " - ", view_size);
+
+        _assign(view.data() + position, view_size - position);
+        return *this;
+    }
+
+    /**
+     * @brief Replaces the contents of the istring.
+     * @param view string_view replacement.
+     * @param position Starting character index.
+     * @param count Number of characters to assign.
+     * @return Reference to this.
+     */
+    constexpr istring& assign(const string_view& view, size_type position, size_type count)
+    {
+        BN_ASSERT(position >= 0 && position <= view.size(), "Invalid position: ", position, " - ", view.size());
+        BN_ASSERT(count >= 0 && count <= view.size() - position, "Invalid count: ", count, " - ", view.size());
+
+        _assign(view.data() + position, count);
+        return *this;
+    }
+
     /**
      * @brief Replaces the contents of the istring.
      * @param char_array_ptr Pointer to null-terminated characters array replacement.
@@ -640,6 +671,37 @@ class istring : public istring_base
         return *this;
     }
 
+    /**
+     * @brief Appends additional characters to the istring.
+     * @param view string_view to append.
+     * @param position Starting character index.
+     * @return Reference to this.
+     */
+    constexpr istring& append(const string_view& view, size_type position)
+    {
+        size_type view_size = view.size();
+        BN_ASSERT(position >= 0 && position <= view_size, "Invalid position: ", position, " - ", view_size);
+
+        _append(view.data() + position, view_size - position);
+        return *this;
+    }
+
+    /**
+     * @brief Appends additional characters to the istring.
+     * @param view string_view to append.
+     * @param position Starting character index.
+     * @param count Number of characters to append.
+     * @return Reference to this.
+     */
+    constexpr istring& append(const string_view& view, size_type position, size_type count)
+    {
+        BN_ASSERT(position >= 0 && position <= view.size(), "Invalid position: ", position, " - ", view.size());
+        BN_ASSERT(count >= 0 && count <= view.size() - position, "Invalid count: ", count, " - ", view.size());
+
+        _append(view.data() + position, count);
+        return *this;
+    }
+
     /**
      * @brief Appends additional characters to the istring.
      * @param char_array_ptr Pointer to null-terminated characters array.

butano/include/documentation/bn_documentation_g_changelog.h

@@ -22,7 +22,7 @@
  *   a `nullptr` char array is disallowed.
  * * bn::unique_ptr is now `constexpr`.
  * * bn::bitset and bn::string aren't `constexpr` anymore (it didn't work before).
- * * More overloads added to bn::string construction, assignment and bn::string::append.
+ * * More overloads added to bn::string construction, assignment, bn::string::assign and bn::string::append.
  * * bn::string::find and bn::string_view::find added.
  * * bn::string::contains and bn::string_view::contains added.
  * * bn::string::substr added.