This commit adds the semantic object fir the identifier expected error.

It is part of the scala#1589

Author: iamthiago

src/dotty/tools/dotc/parsing/JavaParsers.scala

@@ -7,7 +7,6 @@ import dotty.tools.dotc.core.Flags
 import dotty.tools.dotc.core.Flags.FlagSet
 
 import scala.language.implicitConversions
-
 import JavaTokens._
 import JavaScanners._
 import Scanners.Offset
@@ -21,8 +20,10 @@ import Symbols._
 import ast.Trees._
 import Decorators._
 import StdNames._
+import dotty.tools.dotc.reporting.diagnostic.messages.IdentifierExpected
 import dotty.tools.dotc.util.SourceFile
 import util.Positions._
+
 import annotation.switch
 import scala.collection.mutable.ListBuffer
 import scala.reflect.internal.util.Collections._
@@ -230,7 +231,7 @@ object JavaParsers {
         case AppliedTypeTree(_, _) | Select(_, _) =>
           tree
         case _ =>
-          syntaxError("identifier expected", tree.pos)
+          syntaxError(IdentifierExpected(), tree.pos)
           errorTypeTree
       }
     }

src/dotty/tools/dotc/parsing/Parsers.scala

@@ -316,7 +316,7 @@ object Parsers {
       case id @ Select(qual, name) =>
         cpy.Select(id)(qual, name.toTypeName)
       case _ =>
-        syntaxError("identifier expected", tree.pos)
+        syntaxError(IdentifierExpected(), tree.pos)
         tree
     }
 

src/dotty/tools/dotc/reporting/diagnostic/messages.scala

@@ -512,4 +512,10 @@ object messages {
         |}""".stripMargin
   }
 
+  case class IdentifierExpected()(implicit ctx: Context) extends Message(19) {
+    val kind = "Syntax"
+    val msg = "identifier expected"
+    val explanation = ""
+  }
+
 }