[FIR IDE] Initial descriptor-based implementation of the Analysis API

compiler/frontend/src/org/jetbrains/kotlin/descriptors/impl/SyntheticFieldDescriptor.kt

@@ -19,25 +19,23 @@ package org.jetbrains.kotlin.descriptors.impl
 import org.jetbrains.kotlin.descriptors.DeclarationDescriptor
 import org.jetbrains.kotlin.descriptors.PropertyAccessorDescriptor
 import org.jetbrains.kotlin.descriptors.PropertyDescriptor
+import org.jetbrains.kotlin.descriptors.SourceElement
 import org.jetbrains.kotlin.descriptors.annotations.Annotations
 import org.jetbrains.kotlin.name.Name
-import org.jetbrains.kotlin.psi.KtProperty
-import org.jetbrains.kotlin.resolve.source.toSourceElement
 
 class SyntheticFieldDescriptor private constructor(
     val propertyDescriptor: PropertyDescriptor,
     accessorDescriptor: PropertyAccessorDescriptor,
-    property: KtProperty
+    sourceElement: SourceElement
 ) : LocalVariableDescriptor(
     accessorDescriptor, Annotations.EMPTY, SyntheticFieldDescriptor.NAME,
     propertyDescriptor.type, propertyDescriptor.isVar, false, false,
-    property.toSourceElement()
+    sourceElement
 ) {
-
     constructor(
         accessorDescriptor: PropertyAccessorDescriptor,
-        property: KtProperty
-    ) : this(accessorDescriptor.correspondingProperty, accessorDescriptor, property)
+        sourceElement: SourceElement
+    ) : this(accessorDescriptor.correspondingProperty, accessorDescriptor, sourceElement)
 
     override fun getDispatchReceiverParameter() = null
 

compiler/frontend/src/org/jetbrains/kotlin/resolve/BodyResolver.java

@@ -45,6 +45,7 @@ import org.jetbrains.kotlin.resolve.descriptorUtil.DescriptorUtilsKt;
 import org.jetbrains.kotlin.resolve.lazy.ForceResolveUtil;
 import org.jetbrains.kotlin.resolve.multiplatform.ExpectedActualResolver;
 import org.jetbrains.kotlin.resolve.scopes.*;
+import org.jetbrains.kotlin.resolve.source.KotlinSourceElementKt;
 import org.jetbrains.kotlin.types.*;
 import org.jetbrains.kotlin.types.expressions.ExpressionTypingContext;
 import org.jetbrains.kotlin.types.expressions.ExpressionTypingServices;
@@ -1013,7 +1014,8 @@ public class BodyResolver {
         if (functionDescriptor instanceof PropertyAccessorDescriptor && functionDescriptor.getExtensionReceiverParameter() == null) {
             PropertyAccessorDescriptor accessorDescriptor = (PropertyAccessorDescriptor) functionDescriptor;
             KtProperty property = (KtProperty) function.getParent();
-            SyntheticFieldDescriptor fieldDescriptor = new SyntheticFieldDescriptor(accessorDescriptor, property);
+            SourceElement propertySourceElement = KotlinSourceElementKt.toSourceElement(property);
+            SyntheticFieldDescriptor fieldDescriptor = new SyntheticFieldDescriptor(accessorDescriptor, propertySourceElement);
             innerScope = new LexicalScopeImpl(innerScope, functionDescriptor, true, null,
                                               LexicalScopeKind.PROPERTY_ACCESSOR_BODY,
                                               LocalRedeclarationChecker.DO_NOTHING.INSTANCE, handler -> {

compiler/psi/src/org/jetbrains/kotlin/psi/KtPsiUtil.java

@@ -591,6 +591,10 @@ public class KtPsiUtil {
                ((KtBinaryExpression) element).getOperationToken().equals(KtTokens.EQ);
     }
 
+    public static boolean isCast(@NotNull KtBinaryExpressionWithTypeRHS expression) {
+        return isSafeCast(expression) || isUnsafeCast(expression);
+    }
+
     public static boolean isSafeCast(@NotNull KtBinaryExpressionWithTypeRHS expression) {
         return expression.getOperationReference().getReferencedNameElementType() == KtTokens.AS_SAFE;
     }

compiler/tests-compiler-utils/tests/org/jetbrains/kotlin/resolve/lazy/JvmResolveUtil.kt

@@ -88,7 +88,7 @@ object JvmResolveUtil {
     fun analyze(files: Collection<KtFile>, environment: KotlinCoreEnvironment, configuration: CompilerConfiguration): AnalysisResult =
         analyze(environment.project, files, configuration, environment::createPackagePartProvider)
 
-    private fun analyze(
+    fun analyze(
         project: Project,
         files: Collection<KtFile>,
         configuration: CompilerConfiguration,