Add language support for D

Implement support in difftastic for the D programming language
using the treesitter grammar provided in https://github.com/gdamore/tree-sitter-d

Author: BaruchWeka

build.rs

@@ -82,6 +82,11 @@ fn main() {
             src_dir: "vendored_parsers/tree-sitter-cmake-src",
             extra_files: vec!["scanner.c"],
         },
+        TreeSitterParser {
+            name: "tree-sitter-d",
+            src_dir: "vendored_parsers/tree-sitter-d-src",
+            extra_files: vec!["scanner.c"],
+        },
         TreeSitterParser {
             name: "tree-sitter-dart",
             src_dir: "vendored_parsers/tree-sitter-dart-src",

src/parse/guess_language.rs

@@ -28,6 +28,7 @@ pub(crate) enum Language {
     CPlusPlus,
     CSharp,
     Css,
+    D,
     Dart,
     DeviceTree,
     Elixir,
@@ -128,6 +129,7 @@ pub(crate) fn language_name(language: Language) -> &'static str {
         CPlusPlus => "C++",
         CSharp => "C#",
         Css => "CSS",
+        D => "D",
         Dart => "Dart",
         DeviceTree => "Device Tree",
         Elixir => "Elixir",
@@ -258,6 +260,7 @@ pub(crate) fn language_globs(language: Language) -> Vec<glob::Pattern> {
         ],
         CSharp => &["*.cs"],
         Css => &["*.css"],
+        D => &["*.d", "*.di"],
         Dart => &["*.dart"],
         DeviceTree => &["*.dts", "*.dtsi", "*.dtso", "*.its"],
         Elm => &["*.elm"],

src/parse/tree_sitter_parser.rs

@@ -73,6 +73,7 @@ extern "C" {
     fn tree_sitter_apex() -> ts::Language;
     fn tree_sitter_clojure() -> ts::Language;
     fn tree_sitter_cmake() -> ts::Language;
+    fn tree_sitter_d() -> ts::Language;
     fn tree_sitter_dart() -> ts::Language;
     fn tree_sitter_devicetree() -> ts::Language;
     fn tree_sitter_elisp() -> ts::Language;
@@ -278,6 +279,20 @@ pub(crate) fn from_language(language: guess::Language) -> TreeSitterConfig {
                 sub_languages: vec![],
             }
         }
+        D => {
+            let language = unsafe { tree_sitter_d() };
+            TreeSitterConfig {
+                language: language.clone(),
+                atom_nodes: ["string_literal", "char_literal"].into_iter().collect(),
+                delimiter_tokens: vec![("(", ")"), ("{", "}"), ("[", "]")],
+                highlight_query: ts::Query::new(
+                    &language,
+                    include_str!("../../vendored_parsers/highlights/d.scm"),
+                )
+                .unwrap(),
+                sub_languages: vec![],
+            }
+        }
         Dart => {
             let language = unsafe { tree_sitter_dart() };
             TreeSitterConfig {