use package name for pkg object namespan

Author: bishabosha

compiler/src/dotty/tools/dotc/ast/Trees.scala

@@ -376,7 +376,8 @@ object Trees {
         val point = span.point
         if (rawMods.is(Synthetic) || span.isSynthetic || name.toTermName == nme.ERROR) Span(point)
         else {
-          val realName = name.stripModuleClassSuffix.lastPart
+          val srcName = if symbol.isPackageObject then symbol.owner.name else name
+          val realName = srcName.stripModuleClassSuffix.lastPart
           Span(point, point + realName.length, point)
         }
       }

tests/semanticdb/expect/EndMarkers2.expect.scala

@@ -1,4 +1,4 @@
-package object endmark/*<-endmarkers2::package.*/ers2:
+package object endmarkers2/*<-endmarkers2::package.*/:
 
   type Foo/*<-endmarkers2::package.Foo#*/ =
     Unit/*->scala::Unit#*/

tests/semanticdb/expect/semanticdb-Flags.expect.scala

@@ -2,8 +2,8 @@ package flags
 
 import scala.language/*->scala::language.*/.experimental/*->scala::language.experimental.*/.macros/*->scala::language.experimental.macros.*/
 
-package object p {
-  p/*<-flags::p::package.*/rivate lazy val x/*<-flags::p::package.x.*/ = 1
+package object p/*<-flags::p::package.*/ {
+  private lazy val x/*<-flags::p::package.x.*/ = 1
   protected implicit var y/*<-flags::p::package.y().*/: Int/*->scala::Int#*/ = 2
   def z/*<-flags::p::package.z().*/(pp/*<-flags::p::package.z().(pp)*/: Int/*->scala::Int#*/) = 3
   def m/*<-flags::p::package.m().*/[TT/*<-flags::p::package.m().[TT]*/]: Int/*->scala::Int#*/ = macro ???/*->scala::Predef.`???`().*/

tests/semanticdb/metac.expect

@@ -756,7 +756,7 @@ endmarkers2/package. => final package object endmarkers2
 endmarkers2/package.Foo# => type Foo
 
 Occurrences:
-[0:15..0:22): endmark <- endmarkers2/package.
+[0:15..0:26): endmarkers2 <- endmarkers2/package.
 [2:7..2:10): Foo <- endmarkers2/package.Foo#
 [3:4..3:8): Unit -> scala/Unit#
 [4:6..4:9): Foo -> endmarkers2/package.Foo#
@@ -3833,7 +3833,7 @@ Occurrences:
 [2:13..2:21): language -> scala/language.
 [2:22..2:34): experimental -> scala/language.experimental.
 [2:35..2:41): macros -> scala/language.experimental.macros.
-[4:15..5:3): <- flags/p/package.
+[4:15..4:16): p <- flags/p/package.
 [5:2..5:3): p -> flags/p/
 [5:19..5:20): x <- flags/p/package.x.
 [6:25..6:26): y <- flags/p/package.y().