FIR IDE: add API to get KtType from KtTypeParameter

analysis/analysis-api-fir/src/org/jetbrains/kotlin/analysis/api/fir/components/KtFirTypeCreator.kt

@@ -7,14 +7,18 @@ package org.jetbrains.kotlin.analysis.api.fir.components
 
 import org.jetbrains.kotlin.analysis.api.components.KtClassTypeBuilder
 import org.jetbrains.kotlin.analysis.api.components.KtTypeCreator
+import org.jetbrains.kotlin.analysis.api.components.KtTypeParameterTypeBuilder
 import org.jetbrains.kotlin.analysis.api.fir.KtFirAnalysisSession
 import org.jetbrains.kotlin.analysis.api.fir.symbols.KtFirSymbol
 import org.jetbrains.kotlin.analysis.api.tokens.ValidityToken
 import org.jetbrains.kotlin.analysis.api.types.KtClassType
+import org.jetbrains.kotlin.analysis.api.types.KtTypeParameterType
 import org.jetbrains.kotlin.analysis.api.withValidityAssertion
 import org.jetbrains.kotlin.fir.declarations.FirClassLikeDeclaration
+import org.jetbrains.kotlin.fir.declarations.FirTypeParameter
 import org.jetbrains.kotlin.fir.resolve.diagnostics.ConeUnresolvedSymbolError
 import org.jetbrains.kotlin.fir.resolve.providers.symbolProvider
+import org.jetbrains.kotlin.fir.scopes.impl.toConeType
 import org.jetbrains.kotlin.fir.types.ConeClassErrorType
 import org.jetbrains.kotlin.fir.types.ConeClassLikeType
 import org.jetbrains.kotlin.fir.types.typeContext
@@ -47,4 +51,15 @@ internal class KtFirTypeCreator(
 
         return coneType.asKtType() as KtClassType
     }
+
+    override fun buildTypeParameterType(builder: KtTypeParameterTypeBuilder): KtTypeParameterType = withValidityAssertion {
+        val coneType = when (builder) {
+            is KtTypeParameterTypeBuilder.BySymbol -> {
+                val symbol = builder.symbol
+                check(symbol is KtFirSymbol<*>)
+                symbol.firRef.withFir { (it as FirTypeParameter).toConeType() }
+            }
+        }
+        return coneType.asKtType() as KtTypeParameterType
+    }
 }

analysis/analysis-api-fir/tests/org/jetbrains/kotlin/analysis/api/fir/components/typeCreator/AbstractFirTypeParameterTypeTest.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.fir.components.typeCreator
+
+import org.jetbrains.kotlin.analysis.api.fir.FirFrontendApiTestConfiguratorService
+import org.jetbrains.kotlin.analysis.api.impl.base.test.components.typeCreator.AbstractTypeParameterTypeTest
+
+abstract class AbstractFirTypeParameterTypeTest : AbstractTypeParameterTypeTest(FirFrontendApiTestConfiguratorService)

analysis/analysis-api-fir/tests/org/jetbrains/kotlin/analysis/api/fir/components/typeCreator/FirTypeParameterTypeTestGenerated.java

@@ -0,0 +1,44 @@
+/*
+ * 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.fir.components.typeCreator;
+
+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/typeCreator/typeParameter")
+@TestDataPath("$PROJECT_ROOT")
+public class FirTypeParameterTypeTestGenerated extends AbstractFirTypeParameterTypeTest {
+    @Test
+    public void testAllFilesPresentInTypeParameter() throws Exception {
+        KtTestUtil.assertAllTestsPresentByMetadataWithExcluded(this.getClass(), new File("analysis/analysis-api/testData/components/typeCreator/typeParameter"), Pattern.compile("^(.+)\\.kt$"), null, true);
+    }
+
+    @Test
+    @TestMetadata("multipleBounds.kt")
+    public void testMultipleBounds() throws Exception {
+        runTest("analysis/analysis-api/testData/components/typeCreator/typeParameter/multipleBounds.kt");
+    }
+
+    @Test
+    @TestMetadata("regular.kt")
+    public void testRegular() throws Exception {
+        runTest("analysis/analysis-api/testData/components/typeCreator/typeParameter/regular.kt");
+    }
+
+    @Test
+    @TestMetadata("reified.kt")
+    public void testReified() throws Exception {
+        runTest("analysis/analysis-api/testData/components/typeCreator/typeParameter/reified.kt");
+    }
+}