Update mtags to 1.5.1

Author: alexarchambault

build.sbt

@@ -21,11 +21,11 @@ lazy val Version = new {
   def scala213 = scala213Versions.last
   def scala212 = scala212Versions.last
 
-  def mtags = "1.3.5"
+  def mtags = "1.5.1"
   // Important: this should be the exact same version as the one mtags pulls, as mtags uses some scalameta internal APIs,
   // and binary compatibility of these APIs isn't guaranteed.
   // Get this version with a command like 'cs resolve org.scalameta:mtags_2.13.14:1.3.1 | grep org.scalameta:scalameta'
-  def scalameta = "4.9.6"
+  def scalameta = "4.12.3"
 }
 
 inThisBuild(
@@ -295,7 +295,7 @@ lazy val core = crossProject(JVMPlatform, JSPlatform)
       baseDirectory.value./("../src/main/protobuf")
     ),
     libraryDependencies ++= List(
-      "org.scalameta" %%% "scalameta" % Version.scalameta,
+      "org.scalameta" %% "semanticdb-shared" % Version.scalameta,
       "com.thesamet.scalapb" %%% "scalapb-runtime" % scalapbVersion % "protobuf"
     )
   )

metabrowse-server/src/main/scala/metabrowse/server/MetabrowseServer.scala

@@ -323,6 +323,8 @@ class MetabrowseServer(
       doc <- try {
         val timeout = TimeUnit.SECONDS.toMillis(10)
         val textDocument = if (path.lastOpt.exists(_.endsWith(".java"))) {
+          import scala.meta.internal.metals.{EmptyReportContext, ReportContext}
+          implicit val rc: ReportContext = EmptyReportContext
           val input = Input.VirtualFile(path.toString, text)
           t.JavaMtags.index(input, includeMembers = true).index()
         } else {
@@ -356,8 +358,11 @@ class MetabrowseServer(
             None
           }
         input = defn.path.toInput
-        doc = if (input.path.endsWith(".java"))
+        doc = if (input.path.endsWith(".java")) {
+          import scala.meta.internal.metals.{EmptyReportContext, ReportContext}
+          implicit val rc: ReportContext = EmptyReportContext
           t.JavaMtags.index(input, includeMembers = true).index()
+        }
         else
           t.ScalaMtags.index(input, dialect).index()
         occ <- doc.occurrences