[swiftsrc2cpg] Fix handling of static extension methods (#5735)

Author: max-leuthaeuser

joern-cli/frontends/swiftsrc2cpg/src/main/scala/io/joern/swiftsrc2cpg/passes/ExtensionCallPass.scala

@@ -30,7 +30,7 @@ class ExtensionCallPass(cpg: Cpg, extensionFullNameMapping: Map[String, String])
   override def generateParts(): Array[Call] =
     cpg.call
       .methodFullNameNot(x2cpg.Defines.DynamicCallUnknownFullName)
-      .dispatchType(DispatchTypes.DYNAMIC_DISPATCH)
+      .filterNot(_.methodFullName.startsWith("<operator"))
       .toArray
 
   /** For a given call (part), if a mapping exists for its methodFullName, set the call to static dispatch, update the

joern-cli/frontends/swiftsrc2cpg/src/test/scala/io/joern/swiftsrc2cpg/passes/ast/ExtensionWithCompilerTests.scala

@@ -0,0 +1,32 @@
+package io.joern.swiftsrc2cpg.passes.ast
+
+import io.joern.swiftsrc2cpg.testfixtures.SwiftCompilerSrc2CpgSuite
+import io.shiftleft.semanticcpg.language.*
+
+class ExtensionWithCompilerTests extends SwiftCompilerSrc2CpgSuite {
+
+  "ExtensionWithCompilerTests" should {
+
+    "be correct for static extension methods" in {
+      val cpg = codeWithSwiftSetup("""
+         |struct Factory {}
+         |
+         |extension Factory {
+         |  static func id(x: Int) -> Int {
+         |    return x
+         |  }
+         |}
+         |func main(source: Int) {
+         |  Factory.id(x: source)
+         |}
+         |""".stripMargin)
+      val List(idCall) = cpg.call("id").l
+      idCall.code shouldBe "Factory.id(x: source)"
+      idCall.methodFullName shouldBe "SwiftTest.Factory<extension>.id:(x:Swift.Int)->Swift.Int"
+      val List(idMethod) = cpg.method("id").l
+      idMethod.fullName shouldBe "SwiftTest.Factory<extension>.id:(x:Swift.Int)->Swift.Int"
+    }
+
+  }
+
+}