6.7.0 - Alpha6 - Gradle 构建脚本支持自动生成 VersionCodesList 类所需数据以降低脚本启动延迟

build-logic/build.gradle.kts

@@ -0,0 +1,49 @@
+import java.util.*
+
+plugins {
+    `kotlin-dsl` /* kotlin("jvm") */
+}
+
+repositories {
+    mavenCentral()
+    google()
+}
+
+gradle.extra["jdk"] = run determineBuildLogicJdk@{
+    val propsFile: File = rootDir.parentFile.resolve("version.properties")
+    val minSupported: Int = Properties().let { props ->
+        require(propsFile.isFile) {
+            "version.properties not found in root directory"
+        }
+        propsFile.inputStream().use { props.load(it) }
+        val minSupportedVersion = props.getProperty("JAVA_VERSION_MIN_SUPPORTED")
+        require(minSupportedVersion != null) {
+            "version.properties does not contain \"JAVA_VERSION_MIN_SUPPORTED\""
+        }
+        minSupportedVersion.toInt()
+    }
+    val current = JavaVersion.current().majorVersion.toIntOrNull() ?: minSupported
+
+    fun tryAdjustByKotlinJvmTarget(sourceVersion: Int): Int {
+        return runCatching {
+            val cls = Class.forName("org.jetbrains.kotlin.gradle.dsl.JvmTarget")
+            val enumConstants = cls.enumConstants ?: return sourceVersion
+            var tmpVersion = sourceVersion
+            while (tmpVersion > minSupported) {
+                val wanted = "JVM_$tmpVersion"
+                if (enumConstants.any { it?.toString().equals(wanted, ignoreCase = true) }) {
+                    return tmpVersion
+                }
+                tmpVersion -= 1
+            }
+            return@runCatching sourceVersion
+        }.getOrDefault(sourceVersion)
+    }
+
+    tryAdjustByKotlinJvmTarget(maxOf(current, minSupported)).also {
+        println("Toolchain: selected [$it] / current [$current] / min [$minSupported]")
+    }
+}.also { jdk ->
+    kotlin { jvmToolchain(jdk) }
+    java { toolchain.languageVersion.set(JavaLanguageVersion.of(jdk)) }
+}