QOL underline all visible instances of the token the cursor is within

code/custom/4coder_default_hooks.cpp

@@ -9,7 +9,8 @@ CUSTOM_DOC("Default command for responding to a startup event")
 {
     ProfileScope(app, "default startup");
     User_Input input = get_current_input(app);
-    if (match_core_code(&input, CoreCode_Startup)){
+    if (match_core_code(&input, CoreCode_Startup))
+    {
         String_Const_u8_Array file_names = input.event.core.file_names;
         load_themes_default_folder(app);
         default_4coder_initialize(app, file_names);
@@ -308,11 +309,16 @@ recursive_nest_highlight(Application_Links *app, Text_Layout_ID layout_id, Range
     recursive_nest_highlight(app, layout_id, range, &file->nest_array, 0);
 }
 
-function void
+function void default_render_buffer(
-default_render_buffer(Application_Links *app, View_ID view_id, Face_ID face_id,
+  Application_Links *app,
-                      Buffer_ID buffer, Text_Layout_ID text_layout_id,
+  View_ID view_id,
-                      Rect_f32 rect){
+  Face_ID face_id,
+  Buffer_ID buffer,
+  Text_Layout_ID text_layout_id,
+  Rect_f32 rect
+){
     ProfileScope(app, "render buffer");
+    Scratch_Block scratch(app);
 
     View_ID active_view = get_active_view(app, Access_Always);
     b32 is_active_view = (active_view == view_id);
@@ -328,14 +334,41 @@ default_render_buffer(Application_Links *app, View_ID view_id, Face_ID face_id,
 
     // NOTE(allen): Token colorizing
 
-    ARGB_Color color_default = fcolor_resolve(fcolor_id(defcolor_text_default));
+    ARGB_Color color_default  = fcolor_resolve(fcolor_id(defcolor_text_default));
     ARGB_Color color_function = fcolor_resolve(fcolor_id(defcolor_function));
     ARGB_Color color_operator = fcolor_resolve(fcolor_id(defcolor_operator));
     ARGB_Color color_type     = fcolor_resolve(fcolor_id(defcolor_type));
     ARGB_Color color_macro    = fcolor_resolve(fcolor_id(defcolor_macro));
+    ARGB_Color color_back     = fcolor_resolve(fcolor_id(defcolor_back));
+
+    ARGB_Color color_cur_token = color_default;
 
     Token_Array token_array = get_token_array_from_buffer(app, buffer);
-    if (token_array.tokens != 0){
+    if (token_array.tokens != 0)
+    {
+      Token* cursor_token = token_from_pos(&token_array, view_get_cursor_pos(app, active_view));
+      String_Const_u8 cursor_token_string = push_token_lexeme(app, scratch, buffer, cursor_token);
+      if (cursor_token->kind == TokenBaseKind_Identifier)
+      {
+        Code_Index_Note* note = code_index_note_from_string(cursor_token_string);
+
+        if (note != 0)
+        {
+          switch (note->note_kind)
+          {
+            case CodeIndexNote_Function: color_cur_token   = color_function; break;
+            case CodeIndexNote_Type:     color_cur_token   = color_type;     break;
+            case CodeIndexNote_Macro:    color_cur_token   = color_macro;    break;
+            //case CodeIndexNote_Global:   color_cur_token = color_global;     break;
+            //case CodeIndexNote_Enum:     color_cur_token = color_enum;       break;
+          }
+        }
+      }
+
+      Rect_f32 cursor_tok_rect = text_layout_character_on_screen(app, text_layout_id, cursor_token->pos);
+      Vec2_f32 tok_rect_dim = V2f32(cursor_token->size*rect_width(cursor_tok_rect), 2.f);
+      cursor_tok_rect = Rf32_xy_wh(V2f32(cursor_tok_rect.x0, cursor_tok_rect.y1 - 2.f), tok_rect_dim);
+
       draw_cpp_token_colors(app, text_layout_id, &token_array);
 
       // NOTE(allen): Scan for TODOs and NOTEs
@@ -349,10 +382,9 @@ default_render_buffer(Application_Links *app, View_ID view_id, Face_ID face_id,
       }
 
       // NOTE(allen): Color functions
-      Scratch_Block scratch(app);
 
       Token_Iterator_Array it = token_iterator_pos(0, &token_array, visible_range.first);
-      it.count = Min(it.count, visible_range.one_past_last - visible_range.first);
+      it.count = Min(it.count, visible_range.one_past_last);
       for (;;){
         if (!token_it_inc_non_whitespace(&it)){
           break;
@@ -373,6 +405,15 @@ default_render_buffer(Application_Links *app, View_ID view_id, Face_ID face_id,
         {
           String_Const_u8 lexeme = push_token_lexeme(app, scratch, buffer, token);
           Code_Index_Note *note = code_index_note_from_string(lexeme);
+
+          // Underline tokens that match the identifier the cursor is on
+          if (string_match(lexeme, cursor_token_string))
+          {
+            Rect_f32 cur_tok_rect = text_layout_character_on_screen(app, text_layout_id, token->pos);
+            cur_tok_rect = Rf32_xy_wh(V2f32(cur_tok_rect.x0, cur_tok_rect.y1 - 2.f), tok_rect_dim);
+            draw_rectangle(app, cur_tok_rect, 5.f, argb_color_blend(color_cur_token, 0.7f, color_back));
+          }
+
           if (note != 0)
           {
             switch (note->note_kind)

project.4coder

@@ -8,6 +8,7 @@ patterns = {
   "*.bat",
   "*.sh",
   "*.4coder",
+  "*.mm",
 };
 blacklist_patterns = {
   ".*",