Add support for Cargo projects in Drafter and in action macros

data/macros/actions/rust.yml

@@ -0,0 +1,20 @@
+actions:
+
+    # Fetch dependencies (crates).
+    - cargo_fetch:
+        command: |
+            cargo fetch --target %(rust_host_platform)
+
+    # Build release-quality artifacts in offine mode. Deps must've been downloaded before.
+    - cargo_build:
+        command: |
+            cargo build --target %(rust_host_platform) --release --offline -j %(jobs)
+
+    # NOTE: There is no `cargo_install` command, because it's not a
+    # `make install` equivalent. It' supposed to install artifacts into
+    # cargo's own toolset, addressed at developers. You'll have to move files yourself.
+
+    # Test the release-quality artifacts.
+    - cargo_check:
+        command: |
+            cargo test --target %(rust_host_platform) --release --offline -j %(jobs) -- --test-threads=%(jobs)

data/macros/arch/aarch64.yml

@@ -10,6 +10,7 @@ definitions:
     - cpp            : "%(compiler_cpp) -m64"
     - march          : armv8-a+simd+fp+crypto
     - mtune          : cortex-a72.cortex-a53
+    - rust_host_platform : "aarch64-unknown-linux-gnu"
 
 flags:
 

data/macros/arch/emul32/x86_64.yml

@@ -10,6 +10,7 @@ definitions:
     - cpp            : "%(compiler_cpp) -m32"
     - march          : x86-64-v2
     - mtune          : ivybridge
+    - rust_host_platform : "i686-unknown-linux-gnu"
 
 flags:
 

data/macros/arch/x86.yml

@@ -10,6 +10,7 @@ definitions:
     - cpp            : "%(compiler_cpp) -m32"
     - march          : x86-64-v2
     - mtune          : ivybridge
+    - rust_host_platform : "i686-unknown-linux-gnu"
 
 flags:
 

data/macros/arch/x86_64-stage1.yml

@@ -15,6 +15,7 @@ definitions:
     - cpp            : "%(compiler_cpp)"
     - march          : x86-64-v2
     - mtune          : ivybridge
+    - rust_host_platform : "x86_64-unknown-linux-gnu"
     - bootstrap_root : /bill
 
 flags:
@@ -26,4 +27,4 @@ flags:
 
 defaultTuningGroups :
     - base
-    - optimize
+    - optimize

data/macros/arch/x86_64.yml

@@ -10,6 +10,7 @@ definitions:
     - cpp            : "%(compiler_cpp)"
     - march          : x86-64-v2
     - mtune          : ivybridge
+    - rust_host_platform : "x86_64-unknown-linux-gnu"
 
 flags:
 

source/drafter/build/package.d

@@ -19,6 +19,7 @@ public import drafter.build.autotools;
 public import drafter.build.cmake;
 public import drafter.build.meson;
 public import drafter.build.python;
+public import drafter.build.rust;
 
 import std.traits : EnumMembers;
 import std.string : capitalize;
@@ -77,6 +78,11 @@ public enum BuildType : string
      */
     PythonSetuptools = "PythonSetuptools",
 
+    /**
+     * Uses cargo.
+     */
+    Cargo = "cargo",
+
     /**
      * Unsupported tooling
      */

source/drafter/build/rust.d

@@ -0,0 +1,60 @@
+/* SPDX-License-Identifier: Zlib */
+
+/**
+ * Drafter - Python integration
+ *
+ * Authors: © 2020-2022 Serpent OS Developers
+ * License: Zlib
+ */
+
+module drafter.build.rust;
+
+import moss.deps.analysis;
+import drafter : Drafter;
+import drafter.build : BuildType;
+import std.path : baseName;
+
+/**
+ * Discover Cargo projects.
+ */
+static private AnalysisReturn acceptCargo(scope Analyser an, ref FileInfo inpath)
+{
+    Drafter c = an.userdata!Drafter;
+
+    switch (inpath.path.baseName)
+    {
+    case "Cargo.toml":
+        c.incrementBuildConfidence(BuildType.Cargo, 100);
+        return AnalysisReturn.IncludeFile;
+    default:
+        return AnalysisReturn.NextHandler;
+    }
+}
+
+/**
+ * Handler for Cargo projects.
+ */
+public static AnalysisChain cargoChain = AnalysisChain("cargo", [&acceptCargo], 20);
+
+public struct CargoBuild
+{
+    string setup()
+    {
+        return "%cargo_fetch";
+    }
+
+    string build()
+    {
+        return "%cargo_build";
+    }
+
+    string install()
+    {
+        return null;
+    }
+
+    string check()
+    {
+        return "%cargo_check";
+    }
+}

source/drafter/meson.build

@@ -5,6 +5,7 @@ libdrafter_sources = [
     'build/meson.d',
     'build/package.d',
     'build/python.d',
+    'build/rust.d',
     'license/engine.d',
     'license/package.d',
     'metadata/basic.d',

source/drafter/package.d

@@ -83,13 +83,14 @@ public final class Drafter
         analyser.addChain(mesonChain);
         analyser.addChain(cmakeChain);
         analyser.addChain(pythonChain);
+        analyser.addChain(cargoChain);
         analyser.addChain(licenseChain);
         controller.onFail.connect(&onFail);
         controller.onComplete.connect(&onComplete);
         _licenseEngine = new Engine();
 
         auto licenseDir = thisExePath.dirName.buildNormalizedPath("..",
-                "share", "boulder", "licenses").absolutePath;
+            "share", "boulder", "licenses").absolutePath;
         _licenseEngine.loadFromDirectory(licenseDir);
         _licenses = new RedBlackTree!(string, "a < b", false);
         outputFile = File(outputPath, "w");