/*
 * Copyright 2012-2021 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.boot.build;

import java.util.ArrayList;
import java.util.List;

import org.gradle.api.Project;
import org.jetbrains.kotlin.gradle.dsl.KotlinJvmOptions;
import org.jetbrains.kotlin.gradle.tasks.KotlinCompile;

/**
 * Conventions that are applied in the presence of the {@code org.jetbrains.kotlin.jvm}
 * plugin. When the plugin is applied:
 *
 * <ul>
 * <li>{@link KotlinCompile} tasks are configured to:
 * <ul>
 * <li>Use {@code apiVersion} and {@code languageVersion} 1.3.
 * <li>Treat all warnings as errors
 * <li>Suppress version warnings
 * </ul>
 * </ul>
 *
 * <p/>
 *
 * @author Andy Wilkinson
 */
class KotlinConventions {

	void apply(Project project) {
		project.getPlugins().withId("org.jetbrains.kotlin.jvm", (plugin) -> {
			project.getTasks().withType(KotlinCompile.class, (compile) -> {
				KotlinJvmOptions kotlinOptions = compile.getKotlinOptions();
				kotlinOptions.setApiVersion("1.3");
				kotlinOptions.setLanguageVersion("1.3");
				kotlinOptions.setAllWarningsAsErrors(true);
				List<String> freeCompilerArgs = new ArrayList<>(compile.getKotlinOptions().getFreeCompilerArgs());
				freeCompilerArgs.add("-Xsuppress-version-warnings");
				compile.getKotlinOptions().setFreeCompilerArgs(freeCompilerArgs);
			});
		});
	}

}

@@ -1541,33 +1541,33 @@
 etApiVersion(%221.
-3
+6
 %22);%0A%09%09%09%09kotlinOp
@@ -1594,17 +1594,17 @@
 sion(%221.
-3
+6
 %22);%0A%09%09%09%09

Use Kotlin 1.6 for API and language version