AnalyzerExtension refactoring, added support for inline properties

compiler/frontend/src/org/jetbrains/kotlin/diagnostics/Errors.java

@@ -809,6 +809,7 @@ public interface Errors {
     DiagnosticFactory0<PsiElement> REIFIED_TYPE_PARAMETER_IN_OVERRIDE = DiagnosticFactory0.create(ERROR);
     DiagnosticFactory1<PsiElement, CallableDescriptor> INLINE_CALL_CYCLE = DiagnosticFactory1.create(ERROR, DEFAULT);
     DiagnosticFactory0<PsiElement> NON_LOCAL_RETURN_IN_DISABLED_INLINE = DiagnosticFactory0.create(ERROR);
+    DiagnosticFactory0<KtDeclaration> INLINE_PROPERTY_WITH_BACKING_FIELD = DiagnosticFactory0.create(ERROR, DECLARATION_SIGNATURE);
 
 
     DiagnosticFactory0<KtElement> NON_LOCAL_SUSPENSION_POINT = DiagnosticFactory0.create(ERROR);

compiler/frontend/src/org/jetbrains/kotlin/diagnostics/rendering/DefaultErrorMessages.java

@@ -757,6 +757,7 @@ public class DefaultErrorMessages {
         MAP.put(USAGE_IS_NOT_INLINABLE, "Illegal usage of inline-parameter ''{0}'' in ''{1}''. Add ''noinline'' modifier to the parameter declaration", ELEMENT_TEXT, SHORT_NAMES_IN_TYPES);
         MAP.put(NULLABLE_INLINE_PARAMETER, "Inline-parameter ''{0}'' of ''{1}'' must not be nullable. Add ''noinline'' modifier to the parameter declaration or make its type not nullable", ELEMENT_TEXT, SHORT_NAMES_IN_TYPES);
         MAP.put(RECURSION_IN_INLINE, "Inline function ''{1}'' cannot be recursive", ELEMENT_TEXT, SHORT_NAMES_IN_TYPES);
+        MAP.put(INLINE_PROPERTY_WITH_BACKING_FIELD, "Inline property ''{9}'' cannot have backing field");
         //Inline non locals
         MAP.put(NON_LOCAL_RETURN_NOT_ALLOWED, "Can''t inline ''{0}'' here: it may contain non-local returns. Add ''crossinline'' modifier to parameter declaration ''{0}''", ELEMENT_TEXT);
         MAP.put(INLINE_CALL_CYCLE, "The ''{0}'' invocation is a part of inline cycle", NAME);

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

@@ -17,9 +17,13 @@
 package org.jetbrains.kotlin.resolve;
 
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.kotlin.descriptors.CallableMemberDescriptor;
 import org.jetbrains.kotlin.descriptors.FunctionDescriptor;
+import org.jetbrains.kotlin.descriptors.PropertyDescriptor;
 import org.jetbrains.kotlin.descriptors.SimpleFunctionDescriptor;
+import org.jetbrains.kotlin.psi.KtCallableDeclaration;
 import org.jetbrains.kotlin.psi.KtNamedFunction;
+import org.jetbrains.kotlin.psi.KtProperty;
 import org.jetbrains.kotlin.resolve.inline.InlineAnalyzerExtension;
 import org.jetbrains.kotlin.resolve.inline.InlineUtil;
 
@@ -27,15 +31,15 @@ import java.util.Collections;
 import java.util.List;
 import java.util.Map;
 
-public class FunctionAnalyzerExtension {
+public class AnalyzerExtensions {
 
     public interface AnalyzerExtension {
-        void process(@NotNull FunctionDescriptor descriptor, @NotNull KtNamedFunction function, @NotNull BindingTrace trace);
+        void process(@NotNull CallableMemberDescriptor descriptor, @NotNull KtCallableDeclaration functionOrProperty, @NotNull BindingTrace trace);
     }
 
     @NotNull private final BindingTrace trace;
 
-    public FunctionAnalyzerExtension(@NotNull BindingTrace trace) {
+    public AnalyzerExtensions(@NotNull BindingTrace trace) {
         this.trace = trace;
     }
 
@@ -44,16 +48,33 @@ public class FunctionAnalyzerExtension {
             KtNamedFunction function = entry.getKey();
             SimpleFunctionDescriptor functionDescriptor = entry.getValue();
 
-            for (AnalyzerExtension extension : getExtensions(functionDescriptor)) {
+            for (AnalyzerExtension extension : getFunctionExtensions(functionDescriptor)) {
                 extension.process(functionDescriptor, function, trace);
             }
         }
+
+        for (Map.Entry<KtProperty, PropertyDescriptor> entry : bodiesResolveContext.getProperties().entrySet()) {
+            KtProperty function = entry.getKey();
+            PropertyDescriptor propertyDescriptor = entry.getValue();
+
+            for (AnalyzerExtension extension : getPropertyExtensions(propertyDescriptor)) {
+                extension.process(propertyDescriptor, function, trace);
+            }
+        }
     }
 
     @NotNull
-    private static List<AnalyzerExtension> getExtensions(@NotNull FunctionDescriptor functionDescriptor) {
+    private static List<InlineAnalyzerExtension> getFunctionExtensions(@NotNull FunctionDescriptor functionDescriptor) {
         if (InlineUtil.isInline(functionDescriptor)) {
-            return Collections.<AnalyzerExtension>singletonList(InlineAnalyzerExtension.INSTANCE);
+            return Collections.singletonList(InlineAnalyzerExtension.INSTANCE);
+        }
+        return Collections.emptyList();
+    }
+
+    @NotNull
+    private static List<InlineAnalyzerExtension> getPropertyExtensions(@NotNull PropertyDescriptor propertyDescriptor) {
+        if (InlineUtil.hasInlineAccessors(propertyDescriptor)) {
+            return Collections.singletonList(InlineAnalyzerExtension.INSTANCE);
         }
         return Collections.emptyList();
     }

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

@@ -66,7 +66,7 @@ public class BodyResolver {
     @NotNull private final DeclarationsChecker declarationsChecker;
     @NotNull private final AnnotationResolver annotationResolver;
     @NotNull private final DelegatedPropertyResolver delegatedPropertyResolver;
-    @NotNull private final FunctionAnalyzerExtension functionAnalyzerExtension;
+    @NotNull private final AnalyzerExtensions analyzerExtensions;
     @NotNull private final ValueParameterResolver valueParameterResolver;
     @NotNull private final BodyResolveCache bodyResolveCache;
     @NotNull private final KotlinBuiltIns builtIns;
@@ -81,7 +81,7 @@ public class BodyResolver {
             @NotNull DeclarationsChecker declarationsChecker,
             @NotNull DelegatedPropertyResolver delegatedPropertyResolver,
             @NotNull ExpressionTypingServices expressionTypingServices,
-            @NotNull FunctionAnalyzerExtension functionAnalyzerExtension,
+            @NotNull AnalyzerExtensions analyzerExtensions,
             @NotNull BindingTrace trace,
             @NotNull ValueParameterResolver valueParameterResolver,
             @NotNull AnnotationChecker annotationChecker,
@@ -96,7 +96,7 @@ public class BodyResolver {
         this.declarationsChecker = declarationsChecker;
         this.delegatedPropertyResolver = delegatedPropertyResolver;
         this.expressionTypingServices = expressionTypingServices;
-        this.functionAnalyzerExtension = functionAnalyzerExtension;
+        this.analyzerExtensions = analyzerExtensions;
         this.annotationChecker = annotationChecker;
         this.overloadChecker = overloadChecker;
         this.trace = new ObservableBindingTrace(trace);
@@ -239,7 +239,7 @@ public class BodyResolver {
         resolveBehaviorDeclarationBodies(c);
         controlFlowAnalyzer.process(c);
         declarationsChecker.process(c);
-        functionAnalyzerExtension.process(c);
+        analyzerExtensions.process(c);
     }
 
     private void resolveSuperTypeEntryLists(@NotNull BodiesResolveContext c) {

compiler/frontend/src/org/jetbrains/kotlin/resolve/inline/InlineAnalyzerExtension.kt

@@ -20,20 +20,43 @@ import org.jetbrains.kotlin.descriptors.*
 import org.jetbrains.kotlin.diagnostics.Errors
 import org.jetbrains.kotlin.lexer.KtTokens
 import org.jetbrains.kotlin.psi.*
+import org.jetbrains.kotlin.resolve.AnalyzerExtensions
+import org.jetbrains.kotlin.resolve.BindingContext
 import org.jetbrains.kotlin.resolve.BindingTrace
-import org.jetbrains.kotlin.resolve.FunctionAnalyzerExtension
 import org.jetbrains.kotlin.resolve.annotations.isInlineOnlyOrReified
 import org.jetbrains.kotlin.resolve.descriptorUtil.hasDefaultValue
 
-object InlineAnalyzerExtension : FunctionAnalyzerExtension.AnalyzerExtension {
+object InlineAnalyzerExtension : AnalyzerExtensions.AnalyzerExtension {
 
-    override fun process(descriptor: FunctionDescriptor, function: KtNamedFunction, trace: BindingTrace) {
+    override fun process(descriptor: CallableMemberDescriptor, functionOrProperty: KtCallableDeclaration, trace: BindingTrace) {
         assert(InlineUtil.isInline(descriptor)) { "This method should be invoked on inline function: " + descriptor }
 
-        checkDefaults(descriptor, function, trace)
-        checkModalityAndOverrides(descriptor, function, trace)
-        checkHasInlinableAndNullability(descriptor, function, trace)
+        checkModalityAndOverrides(descriptor, functionOrProperty, trace)
+        notSupportedInInlineCheck(descriptor, functionOrProperty, trace)
 
+        if (descriptor is FunctionDescriptor) {
+            assert (functionOrProperty is KtNamedFunction) {
+                "Function descriptor $descriptor should have corresponded KtNamedFunction, but has $functionOrProperty"
+            }
+            checkDefaults(descriptor, functionOrProperty as KtNamedFunction, trace)
+            checkHasInlinableAndNullability(descriptor, functionOrProperty, trace)
+        }
+        else {
+            assert (descriptor is PropertyDescriptor) {
+                "PropertyDescriptor expected, but was $descriptor"
+            }
+            assert (functionOrProperty is KtProperty) {
+                "Property descriptor $descriptor should have corresponded KtProperty, but has $functionOrProperty"
+            }
+
+            val hasBackingField = java.lang.Boolean.TRUE.equals(trace.get(BindingContext.BACKING_FIELD_REQUIRED, descriptor as PropertyDescriptor))
+            if (hasBackingField || (functionOrProperty as KtProperty).delegateExpression != null) {
+                trace.report(Errors.INLINE_PROPERTY_WITH_BACKING_FIELD.on(functionOrProperty))
+            }
+        }
+    }
+
+    private fun notSupportedInInlineCheck(descriptor: CallableMemberDescriptor, functionOrProperty: KtCallableDeclaration, trace: BindingTrace) {
         val visitor = object : KtVisitorVoid() {
             override fun visitKtElement(element: KtElement) {
                 super.visitKtElement(element)
@@ -54,7 +77,7 @@ object InlineAnalyzerExtension : FunctionAnalyzerExtension.AnalyzerExtension {
             }
         }
 
-        function.acceptChildren(visitor)
+        functionOrProperty.acceptChildren(visitor)
     }
 
     private fun checkDefaults(
@@ -74,22 +97,22 @@ object InlineAnalyzerExtension : FunctionAnalyzerExtension.AnalyzerExtension {
     }
 
     private fun checkModalityAndOverrides(
-            functionDescriptor: FunctionDescriptor,
-            function: KtFunction,
+            callableDescriptor: CallableMemberDescriptor,
+            functionOrProperty: KtCallableDeclaration,
             trace: BindingTrace) {
-        if (functionDescriptor.containingDeclaration is PackageFragmentDescriptor) {
+        if (callableDescriptor.containingDeclaration is PackageFragmentDescriptor) {
             return
         }
 
-        if (Visibilities.isPrivate(functionDescriptor.visibility)) {
+        if (Visibilities.isPrivate(callableDescriptor.visibility)) {
             return
         }
 
-        val overridesAnything = functionDescriptor.overriddenDescriptors.isNotEmpty()
+        val overridesAnything = callableDescriptor.overriddenDescriptors.isNotEmpty()
 
         if (overridesAnything) {
-            val ktTypeParameters = function.typeParameters
-            for (typeParameter in functionDescriptor.typeParameters) {
+            val ktTypeParameters = functionOrProperty.typeParameters
+            for (typeParameter in callableDescriptor.typeParameters) {
                 if (typeParameter.isReified) {
                     val ktTypeParameter = ktTypeParameters[typeParameter.index]
                     val reportOn = ktTypeParameter.modifierList?.getModifier(KtTokens.REIFIED_KEYWORD) ?: ktTypeParameter
@@ -98,17 +121,16 @@ object InlineAnalyzerExtension : FunctionAnalyzerExtension.AnalyzerExtension {
             }
         }
 
-        if (functionDescriptor.isEffectivelyFinal()) {
+        if (callableDescriptor.isEffectivelyFinal()) {
             if (overridesAnything) {
-                trace.report(Errors.OVERRIDE_BY_INLINE.on(function))
+                trace.report(Errors.OVERRIDE_BY_INLINE.on(functionOrProperty))
             }
             return
         }
-
-        trace.report(Errors.DECLARATION_CANT_BE_INLINED.on(function))
+        trace.report(Errors.DECLARATION_CANT_BE_INLINED.on(functionOrProperty))
     }
 
-    private fun FunctionDescriptor.isEffectivelyFinal(): Boolean =
+    private fun CallableMemberDescriptor.isEffectivelyFinal(): Boolean =
             modality == Modality.FINAL ||
             containingDeclaration.let { containingDeclaration ->
                 containingDeclaration is ClassDescriptor && containingDeclaration.modality == Modality.FINAL

compiler/frontend/src/org/jetbrains/kotlin/resolve/inline/InlineUtil.java

@@ -47,6 +47,12 @@ public class InlineUtil {
         return descriptor instanceof FunctionDescriptor && getInlineStrategy((FunctionDescriptor) descriptor).isInline();
     }
 
+    public static boolean hasInlineAccessors(@Nullable PropertyDescriptor propertyDescriptor) {
+        PropertyGetterDescriptor getter = propertyDescriptor.getGetter();
+        PropertySetterDescriptor setter = propertyDescriptor.getSetter();
+        return getter != null && getter.isInline() || setter != null && setter.isInline();
+    }
+
     public static boolean isInlineProperty(@Nullable DeclarationDescriptor descriptor) {
         if (!(descriptor instanceof PropertyDescriptor))  return false;