feat(rust): add RustCodeModifier class

This commit adds the RustCodeModifier class, which implements the CodeModifier interface. The class is responsible for modifying Rust code by inserting test code, methods, and classes into the source file. The class is applicable only to the Rust language.

Author: phodal

rust/src/main/kotlin/cc/unitmesh/rust/provider/RustCodeModifier.kt

@@ -0,0 +1,25 @@
+package cc.unitmesh.rust.provider
+
+import cc.unitmesh.devti.context.builder.CodeModifier
+import com.intellij.lang.Language
+import com.intellij.openapi.project.Project
+import com.intellij.openapi.vfs.VirtualFile
+import org.rust.lang.RsLanguage
+
+class RustCodeModifier : CodeModifier {
+    override fun isApplicable(language: Language): Boolean = language is RsLanguage
+
+    override fun insertTestCode(sourceFile: VirtualFile, project: Project, code: String): Boolean {
+        // in Rust, lang the test code is inserted into the source file
+
+        return true
+    }
+
+    override fun insertMethod(sourceFile: VirtualFile, project: Project, code: String): Boolean {
+        TODO("Not yet implemented")
+    }
+
+    override fun insertClass(sourceFile: VirtualFile, project: Project, code: String): Boolean {
+        TODO("Not yet implemented")
+    }
+}

rust/src/main/kotlin/cc/unitmesh/rust/provider/RustVersionContextProvider.kt

@@ -17,11 +17,7 @@ class RustVersionContextProvider : ChatContextProvider {
         val cargoProjectsService = project.service<CargoProjectsService>()
         val rustcInfo = cargoProjectsService.allProjects.firstOrNull()?.rustcInfo ?: return emptyList()
 
-        return listOf(
-            ChatContextItem(
-                RustVersionContextProvider::class,
-                "Rust Version: ${rustcInfo.version}"
-            )
-        )
+        val text = "Rust Version: ${rustcInfo.version}"
+        return listOf(ChatContextItem(RustVersionContextProvider::class, text))
     }
 }

rust/src/main/resources/cc.unitmesh.rust.xml

@@ -24,5 +24,6 @@
                              implementationClass="cc.unitmesh.rust.provider.RustLivingDocumentation"/>
 
         <testContextProvider implementation="cc.unitmesh.rust.provider.RustTestContextProvider"/>
+        <codeModifier language="Rust" implementationClass="cc.unitmesh.rust.provider.RustCodeModifier"/>
     </extensions>
 </idea-plugin>

src/main/kotlin/cc/unitmesh/devti/context/model/DtClass.kt

@@ -109,5 +109,8 @@ class DtClass(
 
         return output.toString()
     }
+
+    /// Don't remove this, it's used by [cc.unitmesh.idea.DtModelExt] which is Kotlin compiler requirements.
+    companion object
 }