FIR exposed visibility checkers: use positioning strategy

compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/declaration/FirExposedVisibilityDeclarationChecker.kt

@@ -6,11 +6,9 @@
 package org.jetbrains.kotlin.fir.analysis.checkers.declaration
 
 import com.intellij.psi.PsiElement
-import com.intellij.psi.PsiNameIdentifierOwner
 import org.jetbrains.kotlin.descriptors.ClassKind
 import org.jetbrains.kotlin.fir.*
 import org.jetbrains.kotlin.fir.analysis.checkers.context.CheckerContext
-import org.jetbrains.kotlin.fir.analysis.checkers.getChildren
 import org.jetbrains.kotlin.fir.analysis.checkers.toRegularClass
 import org.jetbrains.kotlin.fir.analysis.diagnostics.DiagnosticReporter
 import org.jetbrains.kotlin.fir.analysis.diagnostics.FirDiagnosticFactory3
@@ -20,7 +18,6 @@ import org.jetbrains.kotlin.fir.resolve.fullyExpandedType
 import org.jetbrains.kotlin.fir.resolve.toSymbol
 import org.jetbrains.kotlin.fir.resolve.transformers.ensureResolved
 import org.jetbrains.kotlin.fir.types.*
-import org.jetbrains.kotlin.lexer.KtTokens
 import org.jetbrains.kotlin.utils.addToStdlib.safeAs
 
 // TODO: check why coneTypeSafe is necessary at some points inside
@@ -97,7 +94,7 @@ object FirExposedVisibilityDeclarationChecker : FirMemberDeclarationChecker() {
                 restricting,
                 typeAliasVisibility,
                 restricting.getEffectiveVisibility(context),
-                declaration.source?.getIdentifierSource() ?: declaration.source
+                declaration.source
             )
         }
     }
@@ -115,7 +112,7 @@ object FirExposedVisibilityDeclarationChecker : FirMemberDeclarationChecker() {
                     restricting,
                     functionVisibility,
                     restricting.getEffectiveVisibility(context),
-                    declaration.source?.getIdentifierSource() ?: declaration.source
+                    declaration.source
                 )
             }
         }
@@ -151,7 +148,7 @@ object FirExposedVisibilityDeclarationChecker : FirMemberDeclarationChecker() {
                 restricting,
                 propertyVisibility,
                 restricting.getEffectiveVisibility(context),
-                declaration.source?.getIdentifierSource() ?: declaration.source
+                declaration.source
             )
         }
         checkMemberReceiver(declaration.receiverTypeRef, declaration, reporter, context)
@@ -229,14 +226,6 @@ object FirExposedVisibilityDeclarationChecker : FirMemberDeclarationChecker() {
         }
     }
 
-    private fun FirSourceElement.getIdentifierSource() = when (this) {
-        is FirPsiSourceElement<*> -> (this.psi as? PsiNameIdentifierOwner)?.nameIdentifier?.toFirPsiSourceElement()
-        is FirLightSourceElement -> {
-            val identifier = lighterASTNode.getChildren(treeStructure).find { it?.tokenType == KtTokens.IDENTIFIER }
-            identifier?.toFirLightSourceElement(treeStructure)
-        }
-    }
-
     private fun FirMemberDeclaration.getEffectiveVisibility(context: CheckerContext) =
         getEffectiveVisibility(context.session, context.containingDeclarations, context.sessionHolder.scopeSession)
 }

compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/diagnostics/FirErrors.kt

@@ -94,14 +94,14 @@ object FirErrors {
     val VAR_ANNOTATION_PARAMETER by error0<FirSourceElement, KtParameter>(LightTreePositioningStrategies.VAL_OR_VAR_NODE)
 
     // Exposed visibility group
-    val EXPOSED_TYPEALIAS_EXPANDED_TYPE by error3<FirSourceElement, PsiElement, FirEffectiveVisibility, FirMemberDeclaration, FirEffectiveVisibility>()
-    val EXPOSED_FUNCTION_RETURN_TYPE by error3<FirSourceElement, PsiElement, FirEffectiveVisibility, FirMemberDeclaration, FirEffectiveVisibility>()
-    val EXPOSED_RECEIVER_TYPE by error3<FirSourceElement, KtTypeReference, FirEffectiveVisibility, FirMemberDeclaration, FirEffectiveVisibility>()
-    val EXPOSED_PROPERTY_TYPE by error3<FirSourceElement, PsiElement, FirEffectiveVisibility, FirMemberDeclaration, FirEffectiveVisibility>()
-    val EXPOSED_PARAMETER_TYPE by error3<FirSourceElement, KtParameter, FirEffectiveVisibility, FirMemberDeclaration, FirEffectiveVisibility>()
-    val EXPOSED_SUPER_INTERFACE by error3<FirSourceElement, KtSuperTypeListEntry, FirEffectiveVisibility, FirMemberDeclaration, FirEffectiveVisibility>()
-    val EXPOSED_SUPER_CLASS by error3<FirSourceElement, KtSuperTypeListEntry, FirEffectiveVisibility, FirMemberDeclaration, FirEffectiveVisibility>()
-    val EXPOSED_TYPE_PARAMETER_BOUND by error3<FirSourceElement, KtTypeParameter, FirEffectiveVisibility, FirMemberDeclaration, FirEffectiveVisibility>()
+    val EXPOSED_TYPEALIAS_EXPANDED_TYPE by error3<FirSourceElement, PsiElement, FirEffectiveVisibility, FirMemberDeclaration, FirEffectiveVisibility>(LightTreePositioningStrategies.DECLARATION_NAME)
+    val EXPOSED_FUNCTION_RETURN_TYPE by error3<FirSourceElement, PsiElement, FirEffectiveVisibility, FirMemberDeclaration, FirEffectiveVisibility>(LightTreePositioningStrategies.DECLARATION_NAME)
+    val EXPOSED_RECEIVER_TYPE by error3<FirSourceElement, KtTypeReference, FirEffectiveVisibility, FirMemberDeclaration, FirEffectiveVisibility>(LightTreePositioningStrategies.DECLARATION_NAME)
+    val EXPOSED_PROPERTY_TYPE by error3<FirSourceElement, PsiElement, FirEffectiveVisibility, FirMemberDeclaration, FirEffectiveVisibility>(LightTreePositioningStrategies.DECLARATION_NAME)
+    val EXPOSED_PARAMETER_TYPE by error3<FirSourceElement, KtParameter, FirEffectiveVisibility, FirMemberDeclaration, FirEffectiveVisibility>(/* // NB: for parameter FE 1.0 reports not on a name for some reason */)
+    val EXPOSED_SUPER_INTERFACE by error3<FirSourceElement, KtSuperTypeListEntry, FirEffectiveVisibility, FirMemberDeclaration, FirEffectiveVisibility>(LightTreePositioningStrategies.DECLARATION_NAME)
+    val EXPOSED_SUPER_CLASS by error3<FirSourceElement, KtSuperTypeListEntry, FirEffectiveVisibility, FirMemberDeclaration, FirEffectiveVisibility>(LightTreePositioningStrategies.DECLARATION_NAME)
+    val EXPOSED_TYPE_PARAMETER_BOUND by error3<FirSourceElement, KtTypeParameter, FirEffectiveVisibility, FirMemberDeclaration, FirEffectiveVisibility>(LightTreePositioningStrategies.DECLARATION_NAME)
 
     // Modifiers
     val INAPPLICABLE_INFIX_MODIFIER by existing1<FirSourceElement, PsiElement, String>()