Analysis API: add KtType.isDenotable()

analysis/analysis-api-fe10/src/org/jetbrains/kotlin/analysis/api/descriptors/components/KtFe10TypeInfoProvider.kt

@@ -15,6 +15,9 @@ import org.jetbrains.kotlin.analysis.api.withValidityAssertion
 import org.jetbrains.kotlin.builtins.functions.FunctionClassKind
 import org.jetbrains.kotlin.builtins.getFunctionalClassKind
 import org.jetbrains.kotlin.load.java.sam.JavaSingleAbstractMethodUtils
+import org.jetbrains.kotlin.name.SpecialNames
+import org.jetbrains.kotlin.types.DefinitelyNotNullType
+import org.jetbrains.kotlin.types.KotlinType
 import org.jetbrains.kotlin.types.TypeUtils
 
 internal class KtFe10TypeInfoProvider(
@@ -37,4 +40,17 @@ internal class KtFe10TypeInfoProvider(
         require(type is KtFe10Type)
         return TypeUtils.isNullableType(type.type)
     }
+
+    override fun isDenotable(type: KtType): Boolean {
+        require(type is KtFe10Type)
+        val kotlinType = type.type
+        return kotlinType.isDenotable()
+    }
+
+    private fun KotlinType.isDenotable(): Boolean {
+        if (this is DefinitelyNotNullType) return false
+        return constructor.isDenotable &&
+                constructor.declarationDescriptor?.name != SpecialNames.NO_NAME_PROVIDED &&
+                arguments.all { it.type.isDenotable() }
+    }
 }

analysis/analysis-api-fe10/tests/org/jetbrains/kotlin/analysis/api/descriptors/test/KtFe10FrontendApiTestConfiguratorService.kt

@@ -27,6 +27,9 @@ import org.jetbrains.kotlin.test.builders.TestConfigurationBuilder
 import org.jetbrains.kotlin.test.model.TestModule
 import org.jetbrains.kotlin.test.services.TestServices
 import org.jetbrains.kotlin.test.services.compilerConfigurationProvider
+import java.nio.file.Path
+import kotlin.io.path.extension
+import kotlin.io.path.nameWithoutExtension
 
 object KtFe10FrontendApiTestConfiguratorService : FrontendApiTestConfiguratorService {
     override val testPrefix: String
@@ -64,4 +67,10 @@ object KtFe10FrontendApiTestConfiguratorService : FrontendApiTestConfiguratorSer
     override fun doOutOfBlockModification(file: KtFile) {
         // TODO not supported yet
     }
+
+    override fun preprocessTestDataPath(path: Path): Path {
+        val newPath = path.resolveSibling(path.nameWithoutExtension + "." + testPrefix + "." + path.extension)
+        if (newPath.toFile().exists()) return newPath
+        return path
+    }
 }

analysis/analysis-api-fe10/tests/org/jetbrains/kotlin/analysis/api/descriptors/test/components/typeProvider/AbstractKtFe10IsDenotableTest.kt

@@ -0,0 +1,11 @@
+/*
+ * Copyright 2010-2021 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.analysis.api.descriptors.test.components.typeProvider
+
+import org.jetbrains.kotlin.analysis.api.descriptors.test.KtFe10FrontendApiTestConfiguratorService
+import org.jetbrains.kotlin.analysis.api.impl.base.test.components.typeInfoProvider.AbstractIsDenotableTest
+
+abstract class AbstractKtFe10IsDenotableTest : AbstractIsDenotableTest(KtFe10FrontendApiTestConfiguratorService)

analysis/analysis-api-fe10/tests/org/jetbrains/kotlin/analysis/api/descriptors/test/components/typeProvider/KtFe10IsDenotableTestGenerated.java

@@ -0,0 +1,50 @@
+/*
+ * Copyright 2010-2021 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.analysis.api.descriptors.test.components.typeProvider;
+
+import com.intellij.testFramework.TestDataPath;
+import org.jetbrains.kotlin.test.util.KtTestUtil;
+import org.jetbrains.kotlin.test.TestMetadata;
+import org.junit.jupiter.api.Nested;
+import org.junit.jupiter.api.Test;
+
+import java.io.File;
+import java.util.regex.Pattern;
+
+/** This class is generated by {@link GenerateNewCompilerTests.kt}. DO NOT MODIFY MANUALLY */
+@SuppressWarnings("all")
+@TestMetadata("analysis/analysis-api/testData/components/typeInfoProvider/isDenotable")
+@TestDataPath("$PROJECT_ROOT")
+public class KtFe10IsDenotableTestGenerated extends AbstractKtFe10IsDenotableTest {
+    @Test
+    public void testAllFilesPresentInIsDenotable() throws Exception {
+        KtTestUtil.assertAllTestsPresentByMetadataWithExcluded(this.getClass(), new File("analysis/analysis-api/testData/components/typeInfoProvider/isDenotable"), Pattern.compile("^(.+)\\.kt$"), Pattern.compile(".*\\.descriptors\\.kt$"), true);
+    }
+
+    @Test
+    @TestMetadata("localTypes.kt")
+    public void testLocalTypes() throws Exception {
+        runTest("analysis/analysis-api/testData/components/typeInfoProvider/isDenotable/localTypes.kt");
+    }
+
+    @Test
+    @TestMetadata("simpleTypes.kt")
+    public void testSimpleTypes() throws Exception {
+        runTest("analysis/analysis-api/testData/components/typeInfoProvider/isDenotable/simpleTypes.kt");
+    }
+
+    @Test
+    @TestMetadata("smartcast.kt")
+    public void testSmartcast() throws Exception {
+        runTest("analysis/analysis-api/testData/components/typeInfoProvider/isDenotable/smartcast.kt");
+    }
+
+    @Test
+    @TestMetadata("typeParameter.kt")
+    public void testTypeParameter() throws Exception {
+        runTest("analysis/analysis-api/testData/components/typeInfoProvider/isDenotable/typeParameter.kt");
+    }
+}