Analysis API: rework KtSymbol hierarchy

- make some symbols to be KtPossiblyMemberSymbols
- introduce KtDeclarationSymbol for declarations

analysis/analysis-api/src/org/jetbrains/kotlin/analysis/api/components/KtSymbolDeclarationRendererProvider.kt

@@ -5,8 +5,8 @@
 
 package org.jetbrains.kotlin.analysis.api.components
 
+import org.jetbrains.kotlin.analysis.api.symbols.KtDeclarationSymbol
 import org.jetbrains.kotlin.analysis.api.symbols.KtSymbol
-import org.jetbrains.kotlin.analysis.api.symbols.markers.KtPossibleMemberSymbol
 import org.jetbrains.kotlin.analysis.api.types.KtType
 
 /**
@@ -125,7 +125,7 @@ public enum class RendererModifier(public val includeByDefault: Boolean) {
 }
 
 public abstract class KtSymbolDeclarationRendererProvider : KtAnalysisSessionComponent() {
-    public abstract fun renderMember(symbol: KtPossibleMemberSymbol, options: KtDeclarationRendererOptions): String
+    public abstract fun renderDeclaration(symbol: KtDeclarationSymbol, options: KtDeclarationRendererOptions): String
     public abstract fun render(type: KtType, options: KtTypeRendererOptions): String
 }
 
@@ -136,8 +136,8 @@ public interface KtSymbolDeclarationRendererMixIn : KtAnalysisSessionMixIn {
     /**
      * Render symbol into the representable Kotlin string
      */
-    public fun KtPossibleMemberSymbol.render(options: KtDeclarationRendererOptions = KtDeclarationRendererOptions.DEFAULT): String =
-        analysisSession.symbolDeclarationRendererProvider.renderMember(this, options)
+    public fun KtDeclarationSymbol.render(options: KtDeclarationRendererOptions = KtDeclarationRendererOptions.DEFAULT): String =
+        analysisSession.symbolDeclarationRendererProvider.renderDeclaration(this, options)
 
     /**
      * Render kotlin type into the representable Kotlin type string

analysis/analysis-api/src/org/jetbrains/kotlin/analysis/api/components/KtTypeProvider.kt

@@ -6,6 +6,7 @@
 package org.jetbrains.kotlin.analysis.api.components
 
 import org.jetbrains.kotlin.analysis.api.ValidityTokenOwner
+import org.jetbrains.kotlin.analysis.api.symbols.KtCallableSymbol
 import org.jetbrains.kotlin.analysis.api.symbols.KtNamedClassOrObjectSymbol
 import org.jetbrains.kotlin.analysis.api.symbols.markers.KtPossibleMemberSymbol
 import org.jetbrains.kotlin.analysis.api.types.KtFlexibleType
@@ -38,7 +39,7 @@ public abstract class KtTypeProvider : KtAnalysisSessionComponent() {
 
     public abstract fun getAllSuperTypes(type: KtType, shouldApproximate: Boolean): List<KtType>
 
-    public abstract fun getDispatchReceiverType(symbol: KtPossibleMemberSymbol): KtType?
+    public abstract fun getDispatchReceiverType(symbol: KtCallableSymbol): KtType?
 }
 
 public interface KtTypeProviderMixIn : KtAnalysisSessionMixIn {
@@ -133,7 +134,7 @@ public interface KtTypeProviderMixIn : KtAnalysisSessionMixIn {
      */
     @Suppress("DeprecatedCallableAddReplaceWith")
     @Deprecated("Avoid using this function")
-    public fun KtPossibleMemberSymbol.getDispatchReceiverType(): KtType? =
+    public fun KtCallableSymbol.getDispatchReceiverType(): KtType? =
         analysisSession.typeProvider.getDispatchReceiverType(this)
 }
 

analysis/analysis-api/src/org/jetbrains/kotlin/analysis/api/symbols/DebugSymbolRenderer.kt

@@ -39,7 +39,7 @@ public object DebugSymbolRenderer {
 
         withIndent {
             @Suppress("DEPRECATION")
-            (symbol as? KtPossibleMemberSymbol)?.getDispatchReceiverType()?.let { dispatchType ->
+            (symbol as? KtCallableSymbol)?.getDispatchReceiverType()?.let { dispatchType ->
                 appendLine().append("getDispatchReceiver()").append(": ")
                 renderType(dispatchType)
             }

analysis/analysis-api/src/org/jetbrains/kotlin/analysis/api/symbols/KtCallableSymbol.kt

@@ -5,12 +5,13 @@
 
 package org.jetbrains.kotlin.analysis.api.symbols
 
+import org.jetbrains.kotlin.analysis.api.symbols.markers.KtPossibleMemberSymbol
 import org.jetbrains.kotlin.analysis.api.symbols.markers.KtSymbolWithKind
 import org.jetbrains.kotlin.analysis.api.symbols.pointers.KtSymbolPointer
 import org.jetbrains.kotlin.analysis.api.types.KtType
 import org.jetbrains.kotlin.name.CallableId
 
-public abstract class KtCallableSymbol : KtSymbol, KtSymbolWithKind {
+public abstract class KtCallableSymbol : KtSymbol, KtSymbolWithKind, KtPossibleMemberSymbol, KtDeclarationSymbol {
     public abstract val callableIdIfNonLocal: CallableId?
     public abstract val returnType: KtType
 

analysis/analysis-api/src/org/jetbrains/kotlin/analysis/api/symbols/KtClassLikeSymbol.kt

@@ -13,7 +13,7 @@ import org.jetbrains.kotlin.name.Name
 import org.jetbrains.kotlin.name.SpecialNames
 import org.jetbrains.kotlin.types.Variance
 
-public sealed class KtClassifierSymbol : KtSymbol, KtPossiblyNamedSymbol, KtPossibleMemberSymbol
+public sealed class KtClassifierSymbol : KtSymbol, KtPossiblyNamedSymbol, KtDeclarationSymbol
 
 public val KtClassifierSymbol.nameOrAnonymous: Name
     get() = name ?: SpecialNames.ANONYMOUS
@@ -26,7 +26,7 @@ public abstract class KtTypeParameterSymbol : KtClassifierSymbol(), KtNamedSymbo
     public abstract val isReified: Boolean
 }
 
-public sealed class KtClassLikeSymbol : KtClassifierSymbol(), KtSymbolWithKind {
+public sealed class KtClassLikeSymbol : KtClassifierSymbol(), KtSymbolWithKind, KtPossibleMemberSymbol {
     public abstract val classIdIfNonLocal: ClassId?
 
     abstract override fun createPointer(): KtSymbolPointer<KtClassLikeSymbol>

analysis/analysis-api/src/org/jetbrains/kotlin/analysis/api/symbols/KtDeclarationSymbol.kt

@@ -0,0 +1,12 @@
+/*
+ * Copyright 2010-2021 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.analysis.api.symbols
+
+/**
+ * Represents a symbol of declaration which can be directly expressed in source code.
+ * Eg, classes, type parameters or functions ar [KtDeclarationSymbol], but files and packages are not
+ */
+public sealed interface KtDeclarationSymbol : KtSymbol

analysis/analysis-api/src/org/jetbrains/kotlin/analysis/api/symbols/KtVariableLikeSymbol.kt

@@ -16,7 +16,7 @@ import org.jetbrains.kotlin.name.ClassId
 import org.jetbrains.kotlin.name.Name
 import org.jetbrains.kotlin.psi.KtExpression
 
-public sealed class KtVariableLikeSymbol : KtCallableSymbol(), KtNamedSymbol, KtSymbolWithKind {
+public sealed class KtVariableLikeSymbol : KtCallableSymbol(), KtNamedSymbol, KtSymbolWithKind, KtPossibleMemberSymbol {
     abstract override fun createPointer(): KtSymbolPointer<KtVariableLikeSymbol>
 }
 
@@ -37,7 +37,7 @@ public abstract class KtBackingFieldSymbol : KtVariableLikeSymbol() {
     final override val name: Name get() = fieldName
     final override val psi: PsiElement? get() = null
     final override val symbolKind: KtSymbolKind get() = KtSymbolKind.LOCAL
-    final override val origin: KtSymbolOrigin get() = KtSymbolOrigin.PROPERTY_BACKING_FIELD
+    override val origin: KtSymbolOrigin get() = KtSymbolOrigin.PROPERTY_BACKING_FIELD
     final override val callableIdIfNonLocal: CallableId? get() = null
     final override val isExtension: Boolean get() = false
     final override val receiverType: KtType? get() = null