[feat] Add Dockerfile support

CodeLanguages-Container/CodeLanguages-Container.xcodeproj/project.pbxproj

@@ -7,6 +7,7 @@
 	objects = {
 
 /* Begin PBXBuildFile section */
+		2846B262296BA1CF005F60B6 /* TreeSitterDockerfile in Frameworks */ = {isa = PBXBuildFile; productRef = 2846B261296BA1CF005F60B6 /* TreeSitterDockerfile */; };
 		28B3F010290C207D000CD04D /* CodeLanguages_Container.h in Headers */ = {isa = PBXBuildFile; fileRef = 28B3F00F290C207D000CD04D /* CodeLanguages_Container.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		28B3F02D290C35D9000CD04D /* TreeSitterC in Frameworks */ = {isa = PBXBuildFile; productRef = 28B3F02C290C35D9000CD04D /* TreeSitterC */; };
 		28B3F030290C35F9000CD04D /* TreeSitterCPP in Frameworks */ = {isa = PBXBuildFile; productRef = 28B3F02F290C35F9000CD04D /* TreeSitterCPP */; };
@@ -43,6 +44,7 @@
 			files = (
 				28B3F051290C36B1000CD04D /* TreeSitterPHP in Frameworks */,
 				28B3F042290C365C000CD04D /* TreeSitterHaskell in Frameworks */,
+				2846B262296BA1CF005F60B6 /* TreeSitterDockerfile in Frameworks */,
 				28B3F039290C362C000CD04D /* TreeSitterElixir in Frameworks */,
 				28B3F02D290C35D9000CD04D /* TreeSitterC in Frameworks */,
 				28B3F04B290C368B000CD04D /* TreeSitterJS in Frameworks */,
@@ -157,6 +159,7 @@
 				28B3F05F290C3720000CD04D /* TreeSitterYAML */,
 				28B3F062290C372D000CD04D /* TreeSitterZig */,
 				28B9F7A9290DDAC900245748 /* TreeSitterBash */,
+				2846B261296BA1CF005F60B6 /* TreeSitterDockerfile */,
 			);
 			productName = "CodeLanguages-Container";
 			productReference = 28B3F00C290C207D000CD04D /* CodeLanguages_Container.framework */;
@@ -207,6 +210,7 @@
 				28B3F05E290C3720000CD04D /* XCRemoteSwiftPackageReference "tree-sitter-yaml" */,
 				28B3F061290C372D000CD04D /* XCRemoteSwiftPackageReference "tree-sitter-zig" */,
 				28B9F7A6290DDAB500245748 /* XCRemoteSwiftPackageReference "tree-sitter-bash" */,
+				2846B260296BA1CF005F60B6 /* XCRemoteSwiftPackageReference "tree-sitter-dockerfile" */,
 			);
 			productRefGroup = 28B3F00D290C207D000CD04D /* Products */;
 			projectDirPath = "";
@@ -446,6 +450,14 @@
 /* End XCConfigurationList section */
 
 /* Begin XCRemoteSwiftPackageReference section */
+		2846B260296BA1CF005F60B6 /* XCRemoteSwiftPackageReference "tree-sitter-dockerfile" */ = {
+			isa = XCRemoteSwiftPackageReference;
+			repositoryURL = "https://github.com/camdencheek/tree-sitter-dockerfile.git";
+			requirement = {
+				branch = main;
+				kind = branch;
+			};
+		};
 		28B3F02B290C35D9000CD04D /* XCRemoteSwiftPackageReference "tree-sitter-c" */ = {
 			isa = XCRemoteSwiftPackageReference;
 			repositoryURL = "https://github.com/tree-sitter/tree-sitter-c.git";
@@ -609,6 +621,11 @@
 /* End XCRemoteSwiftPackageReference section */
 
 /* Begin XCSwiftPackageProductDependency section */
+		2846B261296BA1CF005F60B6 /* TreeSitterDockerfile */ = {
+			isa = XCSwiftPackageProductDependency;
+			package = 2846B260296BA1CF005F60B6 /* XCRemoteSwiftPackageReference "tree-sitter-dockerfile" */;
+			productName = TreeSitterDockerfile;
+		};
 		28B3F02C290C35D9000CD04D /* TreeSitterC */ = {
 			isa = XCSwiftPackageProductDependency;
 			package = 28B3F02B290C35D9000CD04D /* XCRemoteSwiftPackageReference "tree-sitter-c" */;

CodeLanguages-Container/CodeLanguages-Container/CodeLanguages_Container.h

@@ -27,6 +27,7 @@ extern TSLanguage *tree_sitter_c();
 extern TSLanguage *tree_sitter_cpp();
 extern TSLanguage *tree_sitter_c_sharp();
 extern TSLanguage *tree_sitter_css();
+extern TSLanguage *tree_sitter_dockerfile();
 extern TSLanguage *tree_sitter_elixir();
 extern TSLanguage *tree_sitter_go();
 extern TSLanguage *tree_sitter_gomod();

README.md

@@ -53,6 +53,7 @@ In order to add support for additional languages we have a complete guide on how
 | [C++](https://github.com/tree-sitter/tree-sitter-cpp) | ✅ | ✅ |
 | [C#](https://github.com/tree-sitter/tree-sitter-c-sharp) | ✅ | ✅ |
 | [CSS](https://github.com/lukepistrol/tree-sitter-css) | ✅ | ✅ |
+| [Dockerfile](https://github.com/camdencheek/tree-sitter-dockerfile) | ✅ | ✅ |
 | [Elixir](https://github.com/elixir-lang/tree-sitter-elixir) | ✅ | ✅ |
 | [ERB, EJS](https://github.com/tree-sitter/tree-sitter-embedded-template) |  |  |
 | [Go](https://github.com/tree-sitter/tree-sitter-go) | ✅ | ✅ |

Sources/CodeEditLanguages/CodeLanguage.swift

@@ -33,6 +33,9 @@ public struct CodeLanguage {
     public let tsName: String
 
     /// A set of file extensions for the language
+    ///
+    /// In special cases this can also be a file name
+    /// (e.g `Dockerfile`, `Makefile`)
     public let extensions: Set<String>
 
     /// The query URL of a language this language inherits from. (e.g.: C for C++)
@@ -73,6 +76,8 @@ public struct CodeLanguage {
             return tree_sitter_c_sharp()
         case .css:
             return tree_sitter_css()
+        case .dockerfile:
+            return tree_sitter_dockerfile()
         case .elixir:
             return tree_sitter_elixir()
         case .go:
@@ -120,7 +125,7 @@ public extension CodeLanguage {
     /// - Returns: A language structure
     static func detectLanguageFrom(url: URL) -> CodeLanguage {
         let fileExtension = url.pathExtension.lowercased()
-        let fileName = url.pathComponents.last?.lowercased()
+        let fileName = url.pathComponents.last // should not be lowercase since it has to match e.g. `Dockerfile`
         // This is to handle special file types without an extension (e.g., Makefile, Dockerfile)
         let fileNameOrExtension = fileExtension.isEmpty ? (fileName != nil ? fileName! : "") : fileExtension
         if let lang = allLanguages.first(where: { lang in lang.extensions.contains(fileNameOrExtension)}) {
@@ -137,6 +142,7 @@ public extension CodeLanguage {
         .cpp,
         .cSharp,
         .css,
+        .dockerfile,
         .elixir,
         .go,
         .goMod,
@@ -173,6 +179,9 @@ public extension CodeLanguage {
     /// A language structure for `CSS`
     static let css: CodeLanguage = .init(id: .css, tsName: "css", extensions: ["css"])
 
+    /// A language structure for `Dockerfile`
+    static let dockerfile: CodeLanguage = .init(id: .dockerfile, tsName: "dockerfile", extensions: ["Dockerfile"])
+
     /// A language structure for `Elixir`
     static let elixir: CodeLanguage = .init(id: .elixir, tsName: "elixir", extensions: ["ex", "exs"])
 

Sources/CodeEditLanguages/Documentation.docc/CodeLanguage.md

@@ -24,6 +24,7 @@ let language = CodeLanguage.detectLanguageFrom(url: fileURL)
 - C++
 - C#
 - CSS
+- Dockerfile
 - Elixir
 - Go
 - Go Mod
@@ -67,6 +68,7 @@ let language = CodeLanguage.detectLanguageFrom(url: fileURL)
 - ``cpp``
 - ``cSharp``
 - ``css``
+- ``dockerfile``
 - ``elixir``
 - ``go``
 - ``goMod``

Sources/CodeEditLanguages/Documentation.docc/TreeSitterModel.md

@@ -37,6 +37,7 @@ let query = TreeSitterModel.shared.swiftQuery
 - ``cppQuery``
 - ``cSharpQuery``
 - ``cssQuery``
+- ``dockerfileQuery``
 - ``elixirQuery``
 - ``goQuery``
 - ``goModQuery``

Sources/CodeEditLanguages/Resources/tree-sitter-cpp/injections.scm

@@ -0,0 +1,3 @@
+(raw_string_literal
+  delimiter: (raw_string_delimiter) @injection.language
+  (raw_string_content) @injection.content)

Sources/CodeEditLanguages/Resources/tree-sitter-dockerfile/highlights.scm

@@ -0,0 +1,51 @@
+[
+	"FROM"
+	"AS"
+	"RUN"
+	"CMD"
+	"LABEL"
+	"EXPOSE"
+	"ENV"
+	"ADD"
+	"COPY"
+	"ENTRYPOINT"
+	"VOLUME"
+	"USER"
+	"WORKDIR"
+	"ARG"
+	"ONBUILD"
+	"STOPSIGNAL"
+	"HEALTHCHECK"
+	"SHELL"
+	"MAINTAINER"
+	"CROSS_BUILD"
+] @keyword
+
+[
+	":"
+	"@"
+] @operator
+
+(comment) @comment
+
+
+(image_spec
+	(image_tag
+		":" @punctuation.special)
+	(image_digest
+		"@" @punctuation.special))
+
+(double_quoted_string) @string
+
+(expansion
+  [
+	"$"
+	"{"
+	"}"
+  ] @punctuation.special
+) @none
+
+((variable) @constant
+ (#match? @constant "^[A-Z][A-Z_0-9]*$"))
+
+

Sources/CodeEditLanguages/TreeSitterLanguage.swift

@@ -14,6 +14,7 @@ public enum TreeSitterLanguage: String {
     case cpp
     case cSharp
     case css
+    case dockerfile
     case elixir
     case go
     case goMod

Sources/CodeEditLanguages/TreeSitterModel.swift

@@ -29,6 +29,8 @@ public class TreeSitterModel {
             return cSharpQuery
         case .css:
             return cssQuery
+        case .dockerfile:
+            return dockerfileQuery
         case .elixir:
             return elixirQuery
         case .go:
@@ -91,6 +93,11 @@ public class TreeSitterModel {
         return queryFor(.css)
     }()
 
+    /// Query for `Dockerfile` files.
+    public private(set) lazy var dockerfileQuery: Query? = {
+        return queryFor(.dockerfile)
+    }()
+
     /// Query for `Elixir` files.
     public private(set) lazy var elixirQuery: Query? = {
         return queryFor(.elixir)

Tests/CodeEditLanguagesTests/CodeEditLanguagesTests.swift

@@ -130,6 +130,25 @@ final class CodeEditLanguagesTests: XCTestCase {
         XCTAssertNotEqual(query?.patternCount, 0)
     }
 
+// MARK: - Dockerfile
+
+    func test_CodeLanguageDockerfile() throws {
+        let url = URL(fileURLWithPath: "~/path/to/Dockerfile")
+        let language = CodeLanguage.detectLanguageFrom(url: url)
+
+        XCTAssertEqual(language.id, .dockerfile)
+    }
+
+    func test_FetchQueryDockerfile() throws {
+        var language = CodeLanguage.dockerfile
+        language.resourceURL = bundleURL
+
+        let data = try Data(contentsOf: language.queryURL!)
+        let query = try? Query(language: language.language!, data: data)
+        XCTAssertNotNil(query)
+        XCTAssertNotEqual(query?.patternCount, 0)
+    }
+
 // MARK: - Elixir
 
     func test_CodeLanguageElixir() throws {