support Scala 2.12.18 (and 2.12.19 nightlies) (#330)

Author: SethTisue

.github/workflows/validate.yml

@@ -27,6 +27,7 @@ jobs:
           - 2.12.15
           - 2.12.16
           - 2.12.17
+          - 2.12.18
           - 2.13.0
           - 2.13.1
           - 2.13.2

RELEASING.md

@@ -10,7 +10,7 @@
 It is often the case when this compiler plugin needs to be released for a newly released Scala version. For this the process is the following:
 
 1. Checkout the version that is to be back-released, which would be
-  * `main`, if no features or bug fixes were merged to the main branch since the latest release. In this case create a tag recording you released from this commit, e.g. `git tag -a -m 'Release 0.18 for Scala 2.12.17' v0.18_2.12.17; git push --tags`.
+  * `main`, if no features or bug fixes were merged to the main branch since the latest release. In this case create a tag recording you released from this commit, e.g. `git tag -a -m 'Release 0.18 for Scala 2.12.18' v0.18_2.12.18; git push --tags`.
   * tag, if the main branch has unreleased features or bug fixes. In this case you will need to cherry pick the commit that adds support for the new Scala version.
 1. Create a file `version.sbt` containing `ThisBuild / version := "0.18"` which sets the version to be back-released. This will override the automatic version derivation from the git history. Alternatively you can `set ThisBuild / version := ...` in the command line.
-1. Publish the release by running `SONATYPE_USERNAME=xxx SONATYPE_PASSWORD=xxx sbt clean ++2.12.17 publishSigned sonatypeBundleRelease` (with the appropriate credentials and scala version). You will need Sonatype OSS repository rights to publish under `com.typesafe` organisation.
+1. Publish the release by running `SONATYPE_USERNAME=xxx SONATYPE_PASSWORD=xxx sbt clean ++2.12.18 publishSigned sonatypeBundleRelease` (with the appropriate credentials and scala version). You will need Sonatype OSS repository rights to publish under `com.typesafe` organisation.

build.sbt

@@ -46,7 +46,7 @@ lazy val defaults = Seq(
   sonatypeProfileName := "com.typesafe",
   scalaVersion := crossScalaVersions.value.last,
   crossScalaVersions := {
-    val supportedScala212Versions = (5 to 17).map(p => s"2.12.$p")
+    val supportedScala212Versions = (5 to 18).map(p => s"2.12.$p")
     val supportedScala213Versions = (0 to 10).map(p => s"2.13.$p")
     supportedScala212Versions ++ supportedScala213Versions
   },

src/test/resources/patches/2.12.19.patch

@@ -0,0 +1,71 @@
+--- target/expected_output/basic/akka/rk/buh/is/it/A.java
++++ target/expected_output/basic/akka/rk/buh/is/it/A.java
+@@ -48,13 +48,13 @@
+     public  class NonStatic {
+       public   NonStatic ()  { throw new RuntimeException(); }
+     }
++    public  akka.rk.buh.is.it.A.D$.E$ E ()  { throw new RuntimeException(); }
+     public   D$ ()  { throw new RuntimeException(); }
+     /**
+      * def A.D.math
+      * @return (undocumented)
+      */
+     public  long math ()  { throw new RuntimeException(); }
+-    public  akka.rk.buh.is.it.A.D$.E$ E ()  { throw new RuntimeException(); }
+   }
+   /**
+    * class A.B
+@@ -103,8 +103,8 @@
+    * class A.C
+    */
+   static public  class C1 {
+-    public   C1 ()  { throw new RuntimeException(); }
+     public  akka.rk.buh.is.it.A.C1$C1$ C1 ()  { throw new RuntimeException(); }
++    public   C1 ()  { throw new RuntimeException(); }
+   }
+   /**
+    * object C1
+@@ -142,6 +142,11 @@
+   static public  java.lang.String stattic ()  { throw new RuntimeException(); }
+   static public  java.lang.Object x ()  { throw new RuntimeException(); }
+   /**
++   * Accessor for nested Scala object
++   * @return (undocumented)
++   */
++  public  akka.rk.buh.is.it.A.D$ D ()  { throw new RuntimeException(); }
++  /**
+    * varargs
+    * @param s (undocumented)
+    * @return (undocumented)
+@@ -214,9 +219,4 @@
+    */
+   public  int testthrows () throws java.lang.IllegalArgumentException, java.lang.NullPointerException { throw new RuntimeException(); }
+   public  scala.runtime.Null$ getNull ()  { throw new RuntimeException(); }
+-  /**
+-   * Accessor for nested Scala object
+-   * @return (undocumented)
+-   */
+-  public  akka.rk.buh.is.it.A.D$ D ()  { throw new RuntimeException(); }
+ }
+--- target/expected_output/basic/akka/actor/dsl/Inbox.java    2018-12-13 15:51:52.473679518 +0100
++++ target/expected_output/basic/akka/actor/dsl/Inbox.java 2018-12-13 15:51:51.473673128 +0100
+@@ -2,5 +2,6 @@
+ public  interface Inbox {
+   public  interface InboxExtension {
+     public  int DSLInboxQueueSize ()  ;
++    public  void akka$actor$dsl$Inbox$InboxExtension$_setter_$DSLInboxQueueSize_$eq (int x$1)  ;
+   }
+ }
+--- target/expected_output/basic/akka/persistence/testkit/EventStorage.java	2020-03-23 16:04:03.313049968 +0100
++++ target/expected_output/basic/akka/persistence/testkit/EventStorage.java	2020-03-23 16:04:03.313049968 +0100
+@@ -5,7 +5,9 @@
+       * Static reference to the singleton instance of this Scala object.
+       */
+     public static final JournalPolicies$ MODULE$ = null;
++    public  akka.persistence.testkit.ProcessingPolicy.DefaultPolicies<akka.persistence.testkit.JournalOperation>.PassAll$ PassAll ()  { throw new RuntimeException(); }
+     public   JournalPolicies$ ()  { throw new RuntimeException(); }
+   }
+-  public  akka.persistence.testkit.ProcessingPolicy.DefaultPolicies<akka.persistence.testkit.JournalOperation>.PassAll$ DefaultPolicy ()  ;
++  public  void akka$persistence$testkit$EventStorage$_setter_$DefaultPolicy_$eq (akka.persistence.testkit.ProcessingPolicy.DefaultPolicies<akka.persistence.testkit.JournalOperation>.PassAll x$1)  ;
++  public  akka.persistence.testkit.ProcessingPolicy.DefaultPolicies<akka.persistence.testkit.JournalOperation>.PassAll DefaultPolicy ()  ;
+ }