feat: add highlight_references command

src/tui/editor.zig

@@ -328,6 +328,7 @@ pub const Editor = struct {
     last_find_query: ?[]const u8 = null,
     find_history: ?std.ArrayListUnmanaged([]const u8) = null,
     find_operation: ?enum { goto_next_match, goto_prev_match } = null,
+    highlight_references_state: enum { adding, done } = .done,
 
     prefix_buf: [8]u8 = undefined,
     prefix: []const u8 = &[_]u8{},
@@ -5798,6 +5799,34 @@ pub const Editor = struct {
         self.need_render();
     }
 
+    pub fn highlight_references(self: *Self, _: Context) Result {
+        const file_path = self.file_path orelse return;
+        const primary = self.get_primary();
+        return project_manager.highlight_references(file_path, primary.cursor.row, primary.cursor.col);
+    }
+    pub const highlight_references_meta: Meta = .{ .description = "Language: Highlight references" };
+
+    pub fn add_highlight_reference(self: *Self, match_: Match) void {
+        if (self.highlight_references_state == .done) {
+            self.highlight_references_state = .adding;
+            self.cancel_all_matches();
+        }
+        const root = self.buf_root() catch return;
+        const begin_row = match_.begin.row - @min(match_.begin.row, 1);
+        const begin_col = root.pos_to_width(begin_row, match_.begin.col, self.metrics) catch return;
+        const end_row = match_.end.row - @min(match_.end.row, 1);
+        const end_col = root.pos_to_width(end_row, match_.end.col, self.metrics) catch return;
+        (self.matches.addOne(self.allocator) catch return).* = .{
+            .begin = .{ .row = begin_row, .col = begin_col },
+            .end = .{ .row = end_row, .col = end_col },
+        };
+        self.need_render();
+    }
+
+    pub fn done_highlight_reference(self: *Self) void {
+        self.highlight_references_state = .done;
+    }
+
     pub fn add_diagnostic(
         self: *Self,
         file_path: []const u8,

src/tui/mainview.zig

@@ -140,6 +140,15 @@ pub fn receive(self: *Self, from_: tp.pid_ref, m: tp.message) error{Exit}!bool {
         }
         self.find_in_files_state = .done;
         return true;
+    } else if (try m.match(.{ "HREF", tp.extract(&path), tp.extract(&begin_line), tp.extract(&begin_pos), tp.extract(&end_line), tp.extract(&end_pos), tp.extract(&lines) })) {
+        if (self.get_active_editor()) |editor| editor.add_highlight_reference(.{
+            .begin = .{ .row = begin_line, .col = begin_pos },
+            .end = .{ .row = end_line, .col = end_pos },
+        });
+        return true;
+    } else if (try m.match(.{ "HREF", "done" })) {
+        if (self.get_active_editor()) |editor| editor.done_highlight_reference();
+        return true;
     } else if (try m.match(.{ "hover", tp.extract(&path), tp.string, tp.extract(&lines), tp.extract(&begin_line), tp.extract(&begin_pos), tp.extract(&end_line), tp.extract(&end_pos) })) {
         try self.add_info_content(lines);
         if (self.get_active_editor()) |editor|