From c8cc69a56ef251bb41170f7b9ae747e86a4145ba Mon Sep 17 00:00:00 2001
From: arookieofc <2128194521@qq.com>
Date: Mon, 2 Nov 2026 10:04:03 +0800
Subject: [PATCH] feat(language): add D language support (#728)

Register D (.d/.di) with comments, indentation, the built-in D highlighting mode, a file icon, and serve-d as its language server (dub.json/dub.sdl roots). Closes #727.

Co-authored-by: a-rookie-of-C-language <186315048+a-rookie-of-C-language@users.noreply.github.com>
---
 crates/ide-language/src/registry.rs  |  1 +
 languages/d.toml                     | 13 +++++++++++++
 src/ui/icons.tsx                     |  2 ++
 src/ui/openidea/fileTypes/d.svg      |  3 +++
 src/ui/openidea/fileTypes/d_dark.svg |  3 +++
 5 files changed, 22 insertions(+)
 create mode 100644 languages/d.toml
 create mode 100644 src/ui/openidea/fileTypes/d.svg
 create mode 100644 src/ui/openidea/fileTypes/d_dark.svg

diff --git a/crates/ide-language/src/registry.rs b/crates/ide-language/src/registry.rs
index 908d3ca59..5ceaec741 100644
--- a/crates/ide-language/src/registry.rs
+++ b/crates/ide-language/src/registry.rs
@@ -16,6 +16,7 @@ const BUILTIN: &[(&str, &str)] = &[
     ("cpp", include_str!("../../../languages/cpp.toml")),
     ("csharp", include_str!("../../../languages/csharp.toml")),
     ("css", include_str!("../../../languages/css.toml")),
+    ("d", include_str!("../../../languages/d.toml")),
     ("dart", include_str!("../../../languages/dart.toml")),
     ("diff", include_str!("../../../languages/diff.toml")),
     ("dockerfile", include_str!("../../../languages/dockerfile.toml")),
diff --git a/languages/d.toml b/languages/d.toml
new file mode 100644
index 000000000..2fcdc2cf7
--- /dev/null
+++ b/languages/d.toml
@@ -0,0 +1,13 @@
+id = "d"
+name = "D"
+extensions = ["d", "di"]
+line-comment = "//"
+block-comment = ["/*", "*/"]
+indent = { tab-size = 4, insert-spaces = true }
+ui-mode = "D"
+
+[[language-servers]]
+name = "serve-d"
+command = "serve-d"
+root-markers = ["dub.json", "dub.sdl", "dub.selections.json"]
+install-hint = "Install serve-d (https://github.com/symmetryinvestments/serve-d) and expose it as `serve-d`"
diff --git a/src/ui/icons.tsx b/src/ui/icons.tsx
index bcf50a27a..341630142 100644
--- a/src/ui/icons.tsx
+++ b/src/ui/icons.tsx
@@ -130,6 +130,7 @@ const ICONS = {
   "file-gdscript": "openidea/fileTypes/gdscript",
   "file-godot": "openidea/fileTypes/godot",
   "file-gdshader": "openidea/fileTypes/gdshader",
+  "file-d": "openidea/fileTypes/d",
   "file-dart": "openidea/fileTypes/dart",
   "file-elixir": "openidea/fileTypes/elixir",
   "file-erlang": "openidea/fileTypes/erlang",
@@ -878,6 +879,7 @@ const EXT_ICONS = table({
   "file-gdscript": "gd",
   "file-godot": "tscn tres godot import",
   "file-gdshader": "gdshader gdshaderinc",
+  "file-d": "d di",
   "file-dart": "dart",
   "file-elixir": "ex exs",
   "file-erlang": "erl hrl escript app.src",
diff --git a/src/ui/openidea/fileTypes/d.svg b/src/ui/openidea/fileTypes/d.svg
new file mode 100644
index 000000000..861238ca3
--- /dev/null
+++ b/src/ui/openidea/fileTypes/d.svg
@@ -0,0 +1,3 @@
+<svg width="16" height="16" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
+<g stroke-linejoin="round"><path d="M14 4C14 2.89543 13.1046 2 12 2H4C2.89543 2 2 2.89543 2 4V12C2 13.1046 2.89543 14 4 14H12C13.1046 14 14 13.1046 14 12V4Z" fill="#BA4032"/><path transform="translate(4 3.5)" d="M0.5 0.5V8.5" stroke="#2B2D30"/><path transform="translate(4 3.5)" d="M0.5 0.5H2.7C5.8 0.5 7.4 2.2 7.4 4.5C7.4 6.8 5.8 8.5 2.7 8.5H0.5" stroke="#2B2D30"/></g>
+</svg>
diff --git a/src/ui/openidea/fileTypes/d_dark.svg b/src/ui/openidea/fileTypes/d_dark.svg
new file mode 100644
index 000000000..216cac953
--- /dev/null
+++ b/src/ui/openidea/fileTypes/d_dark.svg
@@ -0,0 +1,3 @@
+<svg width="16" height="16" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
+<g stroke-linejoin="round"><path d="M14 4C14 2.89543 13.1046 2 12 2H4C2.89543 2 2 2.89543 2 4V12C2 13.1046 2.89543 14 4 14H12C13.1046 14 14 13.1046 14 12V4Z" fill="#CE5B4C"/><path transform="translate(4 3.5)" d="M0.5 0.5V8.5" stroke="#2B2D30"/><path transform="translate(4 3.5)" d="M0.5 0.5H2.7C5.8 0.5 7.4 2.2 7.4 4.5C7.4 6.8 5.8 8.5 2.7 8.5H0.5" stroke="#2B2D30"/></g>
+</svg>