Move/inline enum class object related methods in DescriptorUtils

compiler/backend/src/org/jetbrains/jet/codegen/ImplementationBodyCodegen.java

@@ -908,7 +908,7 @@ public class ImplementationBodyCodegen extends ClassBodyCodegen {
         FunctionDescriptor valuesFunction = findEnumFunction("values", new Function1<FunctionDescriptor, Boolean>() {
             @Override
             public Boolean invoke(FunctionDescriptor descriptor) {
-                return DescriptorUtils.isEnumValuesMethod(descriptor);
+                return isEnumValuesMethod(descriptor);
             }
         });
         MethodVisitor mv = v.newMethod(OtherOrigin(myClass, valuesFunction), ACC_PUBLIC | ACC_STATIC, "values", "()" + type.getDescriptor(), null, null);
@@ -926,7 +926,7 @@ public class ImplementationBodyCodegen extends ClassBodyCodegen {
         FunctionDescriptor valueOfFunction = findEnumFunction("valueOf", new Function1<FunctionDescriptor, Boolean>() {
             @Override
             public Boolean invoke(FunctionDescriptor descriptor) {
-                return DescriptorUtils.isEnumValueOfMethod(descriptor);
+                return isEnumValueOfMethod(descriptor);
             }
         });
         MethodVisitor mv = v.newMethod(OtherOrigin(myClass, valueOfFunction),

compiler/backend/src/org/jetbrains/jet/codegen/JvmCodegenUtil.java

@@ -36,6 +36,8 @@ import org.jetbrains.jet.lang.resolve.calls.CallResolverUtil;
 import org.jetbrains.jet.lang.resolve.kotlin.incremental.IncrementalPackageFragmentProvider;
 import org.jetbrains.jet.lang.resolve.name.Name;
 import org.jetbrains.jet.lang.types.JetType;
+import org.jetbrains.jet.lang.types.TypeUtils;
+import org.jetbrains.jet.lang.types.checker.JetTypeChecker;
 import org.jetbrains.jet.lang.types.lang.KotlinBuiltIns;
 
 import java.util.Arrays;
@@ -250,4 +252,18 @@ public class JvmCodegenUtil {
 
         return null;
     }
+
+    public static boolean isEnumValueOfMethod(@NotNull FunctionDescriptor functionDescriptor) {
+        List<ValueParameterDescriptor> methodTypeParameters = functionDescriptor.getValueParameters();
+        JetType nullableString = TypeUtils.makeNullable(KotlinBuiltIns.getInstance().getStringType());
+        return "valueOf".equals(functionDescriptor.getName().asString())
+               && methodTypeParameters.size() == 1
+               && JetTypeChecker.DEFAULT.isSubtypeOf(methodTypeParameters.get(0).getType(), nullableString);
+    }
+
+    public static boolean isEnumValuesMethod(@NotNull FunctionDescriptor functionDescriptor) {
+        List<ValueParameterDescriptor> methodTypeParameters = functionDescriptor.getValueParameters();
+        return "values".equals(functionDescriptor.getName().asString())
+               && methodTypeParameters.isEmpty();
+    }
 }

compiler/backend/src/org/jetbrains/jet/codegen/intrinsics/IntrinsicMethods.java

@@ -19,7 +19,9 @@ package org.jetbrains.jet.codegen.intrinsics;
 import com.google.common.collect.ImmutableList;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
+import org.jetbrains.jet.codegen.JvmCodegenUtil;
 import org.jetbrains.jet.lang.descriptors.CallableMemberDescriptor;
+import org.jetbrains.jet.lang.descriptors.DeclarationDescriptor;
 import org.jetbrains.jet.lang.descriptors.SimpleFunctionDescriptor;
 import org.jetbrains.jet.lang.resolve.CompileTimeConstantUtils;
 import org.jetbrains.jet.lang.resolve.DescriptorUtils;
@@ -33,9 +35,10 @@ import org.jetbrains.jet.lang.types.lang.PrimitiveType;
 import java.util.HashMap;
 import java.util.Map;
 
-import static org.jetbrains.org.objectweb.asm.Opcodes.*;
-import static org.jetbrains.jet.lang.resolve.DescriptorUtils.*;
+import static org.jetbrains.jet.lang.resolve.DescriptorUtils.isClassObject;
+import static org.jetbrains.jet.lang.resolve.DescriptorUtils.isEnumClass;
 import static org.jetbrains.jet.lang.types.lang.KotlinBuiltIns.BUILT_INS_PACKAGE_FQ_NAME;
+import static org.jetbrains.org.objectweb.asm.Opcodes.*;
 
 public class IntrinsicMethods {
     private static final IntrinsicMethod UNARY_MINUS = new UnaryMinus();
@@ -192,12 +195,14 @@ public class IntrinsicMethods {
         if (descriptor instanceof SimpleFunctionDescriptor) {
             SimpleFunctionDescriptor functionDescriptor = (SimpleFunctionDescriptor) descriptor;
 
-            if (isEnumClassObject(functionDescriptor.getContainingDeclaration())) {
-                if (isEnumValuesMethod(functionDescriptor)) {
+            DeclarationDescriptor container = descriptor.getContainingDeclaration();
+            //noinspection ConstantConditions
+            if (isClassObject(container) && isEnumClass(container.getContainingDeclaration())) {
+                if (JvmCodegenUtil.isEnumValuesMethod(functionDescriptor)) {
                     return ENUM_VALUES;
                 }
 
-                if (isEnumValueOfMethod(functionDescriptor)) {
+                if (JvmCodegenUtil.isEnumValueOfMethod(functionDescriptor)) {
                     return ENUM_VALUE_OF;
                 }
             }

core/descriptors/src/org/jetbrains/jet/lang/resolve/DescriptorUtils.java

@@ -27,8 +27,10 @@ import org.jetbrains.jet.lang.resolve.name.Name;
 import org.jetbrains.jet.lang.resolve.name.SpecialNames;
 import org.jetbrains.jet.lang.resolve.scopes.FilteringScope;
 import org.jetbrains.jet.lang.resolve.scopes.JetScope;
-import org.jetbrains.jet.lang.types.*;
-import org.jetbrains.jet.lang.types.checker.JetTypeChecker;
+import org.jetbrains.jet.lang.types.ErrorUtils;
+import org.jetbrains.jet.lang.types.JetType;
+import org.jetbrains.jet.lang.types.LazyType;
+import org.jetbrains.jet.lang.types.TypeConstructor;
 import org.jetbrains.jet.lang.types.lang.KotlinBuiltIns;
 
 import java.util.ArrayList;
@@ -269,16 +271,6 @@ public class DescriptorUtils {
         return superClassDescriptor.equals(KotlinBuiltIns.getInstance().getAny());
     }
 
-    public static boolean isEnumClassObject(@NotNull DeclarationDescriptor descriptor) {
-        if (descriptor instanceof ClassDescriptor && ((ClassDescriptor) descriptor).getKind() == ClassKind.CLASS_OBJECT) {
-            DeclarationDescriptor containing = descriptor.getContainingDeclaration();
-            if ((containing instanceof ClassDescriptor) && ((ClassDescriptor) containing).getKind() == ClassKind.ENUM_CLASS) {
-                return true;
-            }
-        }
-        return false;
-    }
-
     public static boolean isSyntheticClassObject(@NotNull DeclarationDescriptor descriptor) {
         if (isClassObject(descriptor)) {
             DeclarationDescriptor containing = descriptor.getContainingDeclaration();
@@ -343,20 +335,6 @@ public class DescriptorUtils {
         });
     }
 
-    public static boolean isEnumValueOfMethod(@NotNull FunctionDescriptor functionDescriptor) {
-        List<ValueParameterDescriptor> methodTypeParameters = functionDescriptor.getValueParameters();
-        JetType nullableString = TypeUtils.makeNullable(KotlinBuiltIns.getInstance().getStringType());
-        return "valueOf".equals(functionDescriptor.getName().asString())
-               && methodTypeParameters.size() == 1
-               && JetTypeChecker.DEFAULT.isSubtypeOf(methodTypeParameters.get(0).getType(), nullableString);
-    }
-
-    public static boolean isEnumValuesMethod(@NotNull FunctionDescriptor functionDescriptor) {
-        List<ValueParameterDescriptor> methodTypeParameters = functionDescriptor.getValueParameters();
-        return "values".equals(functionDescriptor.getName().asString())
-               && methodTypeParameters.isEmpty();
-    }
-
     /**
      * @return true iff {@code descriptor}'s first non-class container is a package
      */