Add extension function for BindingContext

compiler/frontend/src/org/jetbrains/kotlin/resolve/BindingContextUtils.kt

@@ -29,10 +29,12 @@ import org.jetbrains.kotlin.resolve.DescriptorToSourceUtils
 import org.jetbrains.kotlin.resolve.DescriptorUtils
 import org.jetbrains.kotlin.resolve.calls.context.ResolutionContext
 import org.jetbrains.kotlin.resolve.calls.smartcasts.DataFlowInfo
-import org.jetbrains.kotlin.resolve.scopes.LexicalWritableScope
 import org.jetbrains.kotlin.resolve.scopes.utils.asJetScope
 import org.jetbrains.kotlin.resolve.scopes.utils.takeSnapshot
 import org.jetbrains.kotlin.types.expressions.typeInfoFactory.noTypeInfo
+import org.jetbrains.kotlin.util.slicedMap.ReadOnlySlice
+
+public operator fun <K, V: Any> BindingContext.get(slice: ReadOnlySlice<K, V>, key: K): V? = get(slice, key)
 
 public fun JetReturnExpression.getTargetFunctionDescriptor(context: BindingContext): FunctionDescriptor? {
     val targetLabel = getTargetLabel()

compiler/frontend/src/org/jetbrains/kotlin/resolve/validation/OperatorValidator.kt

@@ -31,6 +31,7 @@ import org.jetbrains.kotlin.resolve.calls.model.VariableAsFunctionResolvedCall
 import org.jetbrains.kotlin.resolve.calls.tasks.isDynamic
 import org.jetbrains.kotlin.types.ErrorUtils
 import org.jetbrains.kotlin.resolve.descriptorUtil.fqNameUnsafe
+import org.jetbrains.kotlin.resolve.bindingContextUtil.get
 
 public class OperatorValidator : SymbolUsageValidator {
 

idea/idea-core/src/org/jetbrains/kotlin/idea/core/KotlinIndicesHelper.kt

@@ -46,6 +46,7 @@ import org.jetbrains.kotlin.resolve.scopes.receivers.ReceiverValue
 import org.jetbrains.kotlin.types.JetType
 import org.jetbrains.kotlin.utils.addIfNotNull
 import org.jetbrains.kotlin.utils.addToStdlib.singletonOrEmptyList
+import org.jetbrains.kotlin.resolve.bindingContextUtil.get
 import java.util.*
 
 public class KotlinIndicesHelper(