Make JVM backend work with Collection.size as val

0. Such properties are called special because their accessor JVM name differs from usual one
1. When making call to such property, always choose special name
2. When generating Kotlin class inheriting such property generate `final bridge int size() { return this.getSize(); }`
3. If there is no `size` declaration in current class generate `bridge int getSize() { // super-call }`

core/descriptor.loader.java/src/org/jetbrains/kotlin/load/java/builtinsPropertiesUtil.kt

@@ -16,21 +16,65 @@
 
 package org.jetbrains.kotlin.load.java
 
+import org.jetbrains.kotlin.builtins.KotlinBuiltIns
 import org.jetbrains.kotlin.descriptors.*
+import org.jetbrains.kotlin.load.java.descriptors.JavaCallableMemberDescriptor
 import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.name.Name
+import org.jetbrains.kotlin.resolve.descriptorUtil.builtIns
 import org.jetbrains.kotlin.resolve.descriptorUtil.fqNameUnsafe
+import org.jetbrains.kotlin.resolve.descriptorUtil.module
 import org.jetbrains.kotlin.utils.addToStdlib.check
 import org.jetbrains.kotlin.utils.addToStdlib.firstNotNullResult
 
 private val BUILTIN_SPECIAL_PROPERTIES_FQ_NAMES = setOf(FqName("kotlin.Collection.size"), FqName("kotlin.Map.size"))
 private val BUILTIN_SPECIAL_PROPERTIES_SHORT_NAMES = BUILTIN_SPECIAL_PROPERTIES_FQ_NAMES.map { it.shortName() }.toSet()
 
-private fun DeclarationDescriptor.hasBuiltinSpecialPropertyFqName()
-    = name in BUILTIN_SPECIAL_PROPERTIES_SHORT_NAMES
-        && fqNameUnsafe.check { it.isSafe }?.toSafe() in BUILTIN_SPECIAL_PROPERTIES_FQ_NAMES
+public fun CallableDescriptor.hasBuiltinSpecialPropertyFqName(): Boolean {
+    if (this is PropertyAccessorDescriptor) return correspondingProperty.hasBuiltinSpecialPropertyFqName()
+    if (name !in BUILTIN_SPECIAL_PROPERTIES_SHORT_NAMES) return false
+
+    return hasBuiltinSpecialPropertyFqNameImpl()
+}
+
+private fun CallableDescriptor.hasBuiltinSpecialPropertyFqNameImpl(): Boolean {
+    if (fqNameUnsafe.check { it.isSafe }?.toSafe() in BUILTIN_SPECIAL_PROPERTIES_FQ_NAMES) return true
+
+    if (!fqNameUnsafe.firstSegmentIs(KotlinBuiltIns.BUILT_INS_PACKAGE_NAME)) return false
+    if (builtIns.builtInsModule != module) return false
+
+    return overriddenDescriptors.any(CallableDescriptor::hasBuiltinSpecialPropertyFqName)
+}
 
 val Name.isBuiltinSpecialPropertyName: Boolean get() = this in BUILTIN_SPECIAL_PROPERTIES_SHORT_NAMES
 
-val PropertyDescriptor.builtinSpecialOverridden: PropertyDescriptor?
-    get() = check { hasBuiltinSpecialPropertyFqName() } ?: overriddenDescriptors.firstNotNullResult { it.builtinSpecialOverridden }
+private val CallableDescriptor.builtinSpecialPropertyAccessorName: String?
+    get() = when(this) {
+        is PropertyAccessorDescriptor -> correspondingProperty.check { it.hasBuiltinSpecialPropertyFqName() }?.name?.asString()
+        else -> null
+    }
+
+@Suppress("UNCHECKED_CAST")
+val <T : CallableDescriptor> T.builtinSpecialOverridden: T? get() {
+    return when (this) {
+        is PropertyAccessorDescriptor -> check { correspondingProperty.hasBuiltinSpecialPropertyFqName() }
+                                         ?: overriddenDescriptors.firstNotNullResult { it.builtinSpecialOverridden } as T?
+        is PropertyDescriptor -> check { hasBuiltinSpecialPropertyFqName() }
+                                 ?: overriddenDescriptors.firstNotNullResult { it.builtinSpecialOverridden } as T?
+        else -> null
+    }
+}
+
+fun CallableDescriptor.overridesBuiltinSpecialDeclaration(): Boolean = builtinSpecialOverridden != null
+
+public val CallableDescriptor.jvmMethodNameIfSpecial: String?
+    get() = builtinOverriddenThatAffectsJvmName?.builtinSpecialPropertyAccessorName
+
+public val CallableDescriptor.builtinOverriddenThatAffectsJvmName: CallableDescriptor?
+    get() = if (hasBuiltinSpecialPropertyFqName() || isFromJava) builtinSpecialOverridden else null
+
+private val CallableDescriptor.isFromJava: Boolean
+    get() = propertyIfAccessor is JavaCallableMemberDescriptor
+
+private val CallableDescriptor.propertyIfAccessor: CallableDescriptor
+    get() = if (this is PropertyAccessorDescriptor) correspondingProperty else this