Support adding ByteCount to void/char pointers without casting

src/buffer.cc

@@ -604,7 +604,7 @@ BufferCoord Buffer::char_prev(BufferCoord coord) const
         return { coord.line - 1, m_lines[coord.line - 1].length() - 1 };
 
     auto line = m_lines[coord.line];
-    auto column = (int)(utf8::character_start(line.begin() + (int)coord.column - 1, line.begin()) - line.begin());
+    auto column = (int)(utf8::character_start(line.begin() + coord.column - 1, line.begin()) - line.begin());
     return { coord.line, column };
 }
 

src/command_manager.cc

@@ -719,7 +719,7 @@ Completions CommandManager::complete(const Context& context,
 {
     auto prefix = command_line.substr(0_byte, cursor_pos);
     CommandParser parser{prefix};
-    const char* cursor = prefix.begin() + (int)cursor_pos;
+    const char* cursor = prefix.begin() + cursor_pos;
     Vector<Token> tokens;
 
     bool is_last_token = true;

src/file.hh

@@ -139,7 +139,7 @@ struct BufferedWriter
         {
             const ByteCount length = data.length();
             const ByteCount write_len = std::min(length, size - m_pos);
-            memcpy(m_buffer + (int)m_pos, data.data(), (int)write_len);
+            memcpy(m_buffer + m_pos, data.data(), (int)write_len);
             m_pos += write_len;
             if (m_pos == size)
                 flush();

src/highlighters.cc

@@ -991,8 +991,8 @@ struct TabulationHighlighter : Highlighter
                     column = 0;
                 }
 
-                kak_assert(pos != nullptr and pos <= line_data + (int)begin.column);
+                kak_assert(pos != nullptr and pos <= line_data + begin.column);
-                for (auto end = line_data + (int)atom_it->end().column; pos != end; ++pos)
+                for (auto end = line_data + atom_it->end().column; pos != end; ++pos)
                 {
                     const char* next_tab = std::find(pos, end, '\t');
                     if (next_tab == end)
@@ -1006,9 +1006,9 @@ struct TabulationHighlighter : Highlighter
                     const ColumnCount tabwidth = tabstop - (column % tabstop);
                     column += tabwidth;
 
-                    if (pos >= line_data + (int)atom_it->begin().column)
+                    if (pos >= line_data + atom_it->begin().column)
                     {
-                        if (pos != line_data + (int)atom_it->begin().column)
+                        if (pos != line_data + atom_it->begin().column)
                             atom_it = ++line.split(atom_it, {begin.line, ByteCount(pos - line_data)});
                         if (pos + 1 != end)
                             atom_it = line.split(atom_it, {begin.line, ByteCount(pos + 1 - line_data)});

src/string.hh

@@ -36,10 +36,10 @@ public:
     const_iterator begin() const { return type().data(); }
 
     [[gnu::always_inline]]
-    iterator end() { return type().data() + (int)type().length(); }
+    iterator end() { return type().data() + type().length(); }
 
     [[gnu::always_inline]]
-    const_iterator end() const { return type().data() + (int)type().length(); }
+    const_iterator end() const { return type().data() + type().length(); }
 
     reverse_iterator rbegin() { return reverse_iterator{end()}; }
     const_reverse_iterator rbegin() const { return const_reverse_iterator{end()}; }
@@ -77,10 +77,10 @@ public:
     { return utf8::advance(begin(), end(), count) - begin(); }
 
     CharCount char_count_to(ByteCount count) const
-    { return utf8::distance(begin(), begin() + (int)count); }
+    { return utf8::distance(begin(), begin() + count); }
 
     ColumnCount column_count_to(ByteCount count) const
-    { return utf8::column_distance(begin(), begin() + (int)count); }
+    { return utf8::column_distance(begin(), begin() + count); }
 
     StringView substr(ByteCount from, ByteCount length = -1) const;
     StringView substr(CharCount from, CharCount length = -1) const;

src/string_utils.cc

@@ -107,7 +107,7 @@ String replace(StringView str, StringView substr, StringView replacement)
             break;
 
         res += replacement;
-        it = match + (int)substr.length();
+        it = match + substr.length();
     }
     return res;
 }

src/units.hh

@@ -137,6 +137,10 @@ inline constexpr ByteCount operator"" _byte(unsigned long long int value)
     return ByteCount(value);
 }
 
+template<typename Byte>
+    requires (std::is_same_v<std::remove_cv_t<Byte>, char> or std::is_same_v<std::remove_cv_t<Byte>, void>)
+Byte* operator+(Byte* ptr, ByteCount count) { return ptr + (int)count; }
+
 struct CharCount : public StronglyTypedNumber<CharCount, int>
 {
     CharCount() = default;