kotlinx-metadata: support experimental context receivers

libraries/tools/kotlinp/testData/ContextReceivers.kt

@@ -0,0 +1,11 @@
+// !LANGUAGE: +ContextReceivers
+
+interface A
+interface B
+
+context(A) class C {
+    context(B) fun f() {}
+}
+
+context(A) fun g() {}
+context(B) val h: Int get() = 42

libraries/tools/kotlinp/testData/ContextReceivers.txt

@@ -0,0 +1,50 @@
+// A.class
+// ------------------------------------------
+public abstract interface A : kotlin/Any {
+
+  // module name: test-module
+}
+// B.class
+// ------------------------------------------
+public abstract interface B : kotlin/Any {
+
+  // module name: test-module
+}
+// C.class
+// ------------------------------------------
+// requires compiler version 1.6.20 (level=ERROR)
+context(A)
+public final class C : kotlin/Any {
+
+  // signature: <init>(LA;)V
+  public constructor()
+
+  // requires compiler version 1.6.20 (level=ERROR)
+  // signature: f(LB;)V
+  context(B)
+  public final fun f(): kotlin/Unit
+
+  // module name: test-module
+}
+// ContextReceiversKt.class
+// ------------------------------------------
+package {
+
+  // requires compiler version 1.6.20 (level=ERROR)
+  // signature: g(LA;)V
+  context(A)
+  public final fun g(): kotlin/Unit
+
+  // requires compiler version 1.6.20 (level=ERROR)
+  // getter: getH(LB;)I
+  context(B)
+  public final val h: kotlin/Int
+    public final /* non-default */ get
+}
+// META-INF/test-module.kotlin_module
+// ------------------------------------------
+module {
+  package <root> {
+    ContextReceiversKt
+  }
+}