[gradle-plugin] Use HostManager instead of PlatformManager

Gradle plugin uses PlatformManager to initialize tasks
when the compiler is not downloaded yet. In this case
PlatformManager cannot read konan.properties file.
This patch replaces PlatformManager with HostManager

shared/src/main/kotlin/org/jetbrains/kotlin/konan/target/KonanTarget.kt

@@ -112,7 +112,7 @@ private class TargetManagerImpl(val userRequest: String?, val hostManager: HostM
     override val targetSuffix get() = target.detailedName
 }
 
-open class HostManager internal constructor(protected val distribution: Distribution = Distribution()) {
+open class HostManager(protected val distribution: Distribution = Distribution()) {
 
     fun targetManager(userRequest: String? = null): TargetManager = TargetManagerImpl(userRequest, this)
 

shared/src/main/kotlin/org/jetbrains/kotlin/konan/target/Platform.kt

@@ -39,9 +39,9 @@ class PlatformManager(distribution: Distribution = Distribution()) : HostManager
         it.key to Platform(it.value)
     }.toMap()
 
-    fun platform(target: KonanTarget) = platforms[target]!!
+    fun platform(target: KonanTarget) = platforms.getValue(target)
-    val hostPlatform = platforms[host]!!
+    val hostPlatform = platforms.getValue(host)
 
-    fun loader(target: KonanTarget) = loaders[target]!!
+    fun loader(target: KonanTarget) = loaders.getValue(target)
 }
 

tools/kotlin-native-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/KonanBuildingConfig.kt

@@ -46,11 +46,11 @@ abstract class KonanBuildingConfig<T: KonanBuildingTask>(private val name_: Stri
     internal val aggregateBuildTask: Task
 
     private val konanTargets: Iterable<KonanTarget>
-        get() = project.platformManager.toKonanTargets(targets).distinct()
+        get() = project.hostManager.toKonanTargets(targets).distinct()
 
     init {
         for (target in konanTargets) {
-            if (!project.platformManager.isEnabled(target)) {
+            if (!project.hostManager.isEnabled(target)) {
                 project.logger.warn("The target is not enabled on the current host: ${target.visibleName}")
                 continue
             }
@@ -119,7 +119,7 @@ abstract class KonanBuildingConfig<T: KonanBuildingTask>(private val name_: Stri
     internal operator fun get(target: KonanTarget) = targetToTask[target]
 
     fun getByTarget(target: String) = findByTarget(target) ?: throw NoSuchElementException("No such target for artifact $name: ${target}")
-    fun findByTarget(target: String) = this[project.platformManager.targetByName(target)]
+    fun findByTarget(target: String) = this[project.hostManager.targetByName(target)]
 
     fun getArtifactByTarget(target: String) = getByTarget(target).artifact
     fun findArtifactByTarget(target: String) = findByTarget(target)?.artifact
@@ -144,9 +144,9 @@ abstract class KonanBuildingConfig<T: KonanBuildingTask>(private val name_: Stri
     fun dependsOn(vararg dependencies: Any?) = forEach { it.dependsOn(*dependencies) }
 
     fun target(targetString: String, configureAction: T.() -> Unit) {
-        val target = project.platformManager.targetByName(targetString)
+        val target = project.hostManager.targetByName(targetString)
 
-        if (!project.platformManager.isEnabled(target)) {
+        if (!project.hostManager.isEnabled(target)) {
             project.logger.warn("Target '$targetString' of artifact '$name' is not supported on the current host")
             return
         }

tools/kotlin-native-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/KonanPlugin.kt

@@ -23,8 +23,8 @@ import org.gradle.api.plugins.BasePlugin
 import org.gradle.tooling.provider.model.ToolingModelBuilderRegistry
 import org.jetbrains.kotlin.gradle.plugin.KonanPlugin.Companion.COMPILE_ALL_TASK_NAME
 import org.jetbrains.kotlin.gradle.plugin.tasks.*
+import org.jetbrains.kotlin.konan.target.HostManager
 import org.jetbrains.kotlin.konan.target.KonanTarget
-import org.jetbrains.kotlin.konan.target.PlatformManager
 import org.jetbrains.kotlin.konan.target.customerDistribution
 import java.io.File
 import java.util.*
@@ -74,13 +74,13 @@ internal val Project.konanArtifactsContainer: NamedDomainObjectContainer<KonanBu
     get() = extensions.getByName(KonanPlugin.ARTIFACTS_CONTAINER_NAME)
             as NamedDomainObjectContainer<KonanBuildingConfig<*>>
 
-internal val Project.platformManager: PlatformManager
+internal val Project.hostManager: HostManager
-    get() = findProperty("platformManager") as PlatformManager? ?:
+    get() = findProperty("hostManager") as HostManager? ?:
-            PlatformManager(customerDistribution(konanHome))
+        HostManager(customerDistribution(konanHome))
 
 internal val Project.konanTargets: List<KonanTarget>
-    get() = platformManager.toKonanTargets(konanExtension.targets)
+    get() = hostManager.toKonanTargets(konanExtension.targets)
-                .filter{ platformManager.isEnabled(it) }
+                .filter{ hostManager.isEnabled(it) }
                 .distinct()
 
 @Suppress("UNCHECKED_CAST")