[FIR] Extract java synthetic names calculation to platform specific component

compiler/fir/java/src/org/jetbrains/kotlin/fir/java/JavaSessionUtils.kt

@@ -9,10 +9,12 @@ import org.jetbrains.kotlin.fir.FirSession
 import org.jetbrains.kotlin.fir.registerJvmEffectiveVisibilityResolver
 import org.jetbrains.kotlin.fir.resolve.calls.jvm.registerJvmCallConflictResolverFactory
 import org.jetbrains.kotlin.fir.resolve.registerJavaClassMapper
+import org.jetbrains.kotlin.fir.resolve.registerJavaSyntheticNamesProvider
 
 fun FirSession.registerJavaSpecificComponents() {
     registerJavaVisibilityChecker()
     registerJvmCallConflictResolverFactory()
     registerJvmEffectiveVisibilityResolver()
     registerJavaClassMapper()
+    registerJavaSyntheticNamesProvider()
 }

compiler/fir/java/src/org/jetbrains/kotlin/fir/java/scopes/JavaClassUseSiteMemberScope.kt

@@ -13,7 +13,7 @@ import org.jetbrains.kotlin.fir.declarations.synthetic.buildSyntheticProperty
 import org.jetbrains.kotlin.fir.expressions.FirExpression
 import org.jetbrains.kotlin.fir.java.JavaTypeParameterStack
 import org.jetbrains.kotlin.fir.java.declarations.*
-import org.jetbrains.kotlin.fir.resolve.calls.FirSyntheticPropertiesScope
+import org.jetbrains.kotlin.fir.resolve.FirJavaSyntheticNamesProvider
 import org.jetbrains.kotlin.fir.scopes.FirScope
 import org.jetbrains.kotlin.fir.scopes.FirTypeScope
 import org.jetbrains.kotlin.fir.scopes.getContainingCallableNamesIfPresent
@@ -157,7 +157,7 @@ class JavaClassUseSiteMemberScope(
         if (name.isSpecial) {
             return processAccessorFunctionsAndPropertiesByName(name, emptyList(), processor)
         }
-        val getterNames = FirSyntheticPropertiesScope.possibleGetterNamesByPropertyName(name)
+        val getterNames = FirJavaSyntheticNamesProvider.possibleGetterNamesByPropertyName(name)
         val setterName = Name.identifier(SETTER_PREFIX + name.identifier.capitalize())
         return processAccessorFunctionsAndPropertiesByName(name, getterNames, processor)
     }

compiler/fir/jvm/src/org/jetbrains/kotlin/fir/resolve/FirJavaSyntheticNamesProvider.kt

@@ -0,0 +1,46 @@
+/*
+ * Copyright 2010-2020 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.fir.resolve
+
+import org.jetbrains.kotlin.fir.FirSession
+import org.jetbrains.kotlin.fir.resolve.calls.FirSyntheticNamesProvider
+import org.jetbrains.kotlin.load.java.propertyNameByGetMethodName
+import org.jetbrains.kotlin.name.Name
+import org.jetbrains.kotlin.util.capitalizeDecapitalize.capitalizeAsciiOnly
+import org.jetbrains.kotlin.util.capitalizeDecapitalize.capitalizeFirstWord
+
+object FirJavaSyntheticNamesProvider : FirSyntheticNamesProvider() {
+    private const val GETTER_PREFIX = "get"
+    private const val IS_PREFIX = "is"
+
+    override fun possibleGetterNamesByPropertyName(name: Name): List<Name> {
+        if (name.isSpecial) return emptyList()
+        val identifier = name.identifier
+        val capitalizedAsciiName = identifier.capitalizeAsciiOnly()
+        val capitalizedFirstWordName = identifier.capitalizeFirstWord(asciiOnly = true)
+        return listOfNotNull(
+            Name.identifier(GETTER_PREFIX + capitalizedAsciiName),
+            if (capitalizedFirstWordName == capitalizedAsciiName) null else Name.identifier(GETTER_PREFIX + capitalizedFirstWordName),
+            name.takeIf { identifier.startsWith(IS_PREFIX) }
+        ).filter {
+            propertyNameByGetMethodName(it) == name
+        }
+    }
+
+    override fun setterNameByGetterName(name: Name): Name {
+        val identifier = name.identifier
+        val prefix = when {
+            identifier.startsWith("get") -> "get"
+            identifier.startsWith("is") -> "is"
+            else -> throw IllegalArgumentException()
+        }
+        return Name.identifier("set" + identifier.removePrefix(prefix))
+    }
+}
+
+fun FirSession.registerJavaSyntheticNamesProvider() {
+    register(FirSyntheticNamesProvider::class, FirJavaSyntheticNamesProvider)
+}

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/calls/FirSyntheticNamesProvider.kt

@@ -0,0 +1,17 @@
+/*
+ * Copyright 2010-2020 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.fir.resolve.calls
+
+import org.jetbrains.kotlin.fir.FirSession
+import org.jetbrains.kotlin.fir.FirSessionComponent
+import org.jetbrains.kotlin.name.Name
+
+abstract class FirSyntheticNamesProvider : FirSessionComponent {
+    abstract fun possibleGetterNamesByPropertyName(name: Name): List<Name>
+    abstract fun setterNameByGetterName(name: Name): Name
+}
+
+val FirSession.syntheticNamesProvider: FirSyntheticNamesProvider by FirSession.sessionComponentAccessor()

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/calls/Synthetics.kt

@@ -19,10 +19,7 @@ import org.jetbrains.kotlin.fir.symbols.StandardClassIds
 import org.jetbrains.kotlin.fir.symbols.SyntheticSymbol
 import org.jetbrains.kotlin.fir.symbols.impl.*
 import org.jetbrains.kotlin.fir.types.*
-import org.jetbrains.kotlin.load.java.propertyNameByGetMethodName
 import org.jetbrains.kotlin.name.Name
-import org.jetbrains.kotlin.util.capitalizeDecapitalize.capitalizeAsciiOnly
-import org.jetbrains.kotlin.util.capitalizeDecapitalize.capitalizeFirstWord
 
 class SyntheticPropertySymbol(
     callableId: CallableId,
@@ -37,38 +34,10 @@ class FirSyntheticPropertiesScope(
     val session: FirSession,
     private val baseScope: FirTypeScope
 ) : FirScope() {
-
-    companion object {
-        private const val GETTER_PREFIX = "get"
-        private const val IS_PREFIX = "is"
-
-        fun possibleGetterNamesByPropertyName(name: Name): List<Name> {
-            if (name.isSpecial) return emptyList()
-            val identifier = name.identifier
-            val capitalizedAsciiName = identifier.capitalizeAsciiOnly()
-            val capitalizedFirstWordName = identifier.capitalizeFirstWord(asciiOnly = true)
-            return listOfNotNull(
-                Name.identifier(GETTER_PREFIX + capitalizedAsciiName),
-                if (capitalizedFirstWordName == capitalizedAsciiName) null else Name.identifier(GETTER_PREFIX + capitalizedFirstWordName),
-                name.takeIf { identifier.startsWith(IS_PREFIX) }
-            ).filter {
-                propertyNameByGetMethodName(it) == name
-            }
-        }
-
-        fun setterNameByGetterName(name: Name): Name {
-            val identifier = name.identifier
-            val prefix = when {
-                identifier.startsWith("get") -> "get"
-                identifier.startsWith("is") -> "is"
-                else -> throw IllegalArgumentException()
-            }
-            return Name.identifier("set" + identifier.removePrefix(prefix))
-        }
-    }
+    private val syntheticNamesProvider = session.syntheticNamesProvider
 
     override fun processPropertiesByName(name: Name, processor: (FirVariableSymbol<*>) -> Unit) {
-        val getterNames = possibleGetterNamesByPropertyName(name)
+        val getterNames = syntheticNamesProvider.possibleGetterNamesByPropertyName(name)
         for (getterName in getterNames) {
             baseScope.processFunctionsByName(getterName) {
                 checkGetAndCreateSynthetic(name, getterName, it, processor)
@@ -94,7 +63,7 @@ class FirSyntheticPropertiesScope(
 
         var matchingSetter: FirSimpleFunction? = null
         if (getterReturnType != null) {
-            val setterName = setterNameByGetterName(getterName)
+            val setterName = syntheticNamesProvider.setterNameByGetterName(getterName)
             baseScope.processFunctionsByName(setterName, fun(setterSymbol: FirFunctionSymbol<*>) {
                 if (matchingSetter != null) return
                 val setter = setterSymbol.fir as? FirSimpleFunction ?: return