Migrate collections to arrays for memory optimisation

during import process

idea/kotlin-gradle-tooling/src/KotlinMPPGradleModel.kt

@@ -56,7 +56,7 @@ interface KotlinLanguageSettings : Serializable {
     val isProgressiveMode: Boolean
     val enabledLanguageFeatures: Set<String>
     val experimentalAnnotationsInUse: Set<String>
-    val compilerPluginArguments: List<String>
+    val compilerPluginArguments: Array<String>
     val compilerPluginClasspath: Set<File>
 }
 
@@ -67,15 +67,15 @@ interface KotlinCompilationOutput : Serializable {
 }
 
 interface KotlinCompilationArguments : Serializable {
-    val defaultArguments: List<String>
-    val currentArguments: List<String>
+    val defaultArguments: Array<String>
+    val currentArguments: Array<String>
 }
 
 interface KotlinCompilation : KotlinModule {
     val sourceSets: Collection<KotlinSourceSet>
     val output: KotlinCompilationOutput
     val arguments: KotlinCompilationArguments
-    val dependencyClasspath: List<String>
+    val dependencyClasspath: Array<String>
     val disambiguationClassifier: String?
     val platform: KotlinPlatform
     val kotlinTaskProperties: KotlinTaskProperties

idea/kotlin-gradle-tooling/src/KotlinMPPGradleModelBuilder.kt

@@ -155,7 +155,7 @@ class KotlinMPPGradleModelBuilder : ModelBuilderService {
             getProgressiveMode(gradleLanguageSettings) as? Boolean ?: false,
             getEnabledLanguageFeatures(gradleLanguageSettings) as? Set<String> ?: emptySet(),
             getExperimentalAnnotationsInUse?.invoke(gradleLanguageSettings) as? Set<String> ?: emptySet(),
-            getCompilerPluginArguments?.invoke(gradleLanguageSettings) as? List<String> ?: emptyList(),
+            (getCompilerPluginArguments?.invoke(gradleLanguageSettings) as? List<String> ?: emptyList()).toTypedArray(),
             (getCompilerPluginClasspath?.invoke(gradleLanguageSettings) as? FileCollection)?.files ?: emptySet()
         )
     }
@@ -276,7 +276,7 @@ class KotlinMPPGradleModelBuilder : ModelBuilderService {
             dependencies,
             output,
             arguments,
-            dependencyClasspath,
+            dependencyClasspath.toTypedArray(),
             kotlinTaskProperties
         )
     }
@@ -387,7 +387,7 @@ class KotlinMPPGradleModelBuilder : ModelBuilderService {
         val getDefaultArguments = compileTaskClass.getMethodOrNull("getDefaultSerializedCompilerArguments")
         val currentArguments = safelyGetArguments(compileKotlinTask, getCurrentArguments)
         val defaultArguments = safelyGetArguments(compileKotlinTask, getDefaultArguments)
-        return KotlinCompilationArgumentsImpl(defaultArguments, currentArguments)
+        return KotlinCompilationArgumentsImpl(defaultArguments.toTypedArray(), currentArguments.toTypedArray())
     }
 
     private fun buildDependencyClasspath(compileKotlinTask: Task): List<String> {

idea/kotlin-gradle-tooling/src/KotlinMPPGradleModelImpl.kt

@@ -46,7 +46,7 @@ data class KotlinLanguageSettingsImpl(
     override val isProgressiveMode: Boolean,
     override val enabledLanguageFeatures: Set<String>,
     override val experimentalAnnotationsInUse: Set<String>,
-    override val compilerPluginArguments: List<String>,
+    override val compilerPluginArguments: Array<String>,
     override val compilerPluginClasspath: Set<File>
 ) : KotlinLanguageSettings {
     constructor(settings: KotlinLanguageSettings) : this(
@@ -73,10 +73,13 @@ data class KotlinCompilationOutputImpl(
 }
 
 data class KotlinCompilationArgumentsImpl(
-    override val defaultArguments: List<String>,
-    override val currentArguments: List<String>
+    override val defaultArguments: Array<String>,
+    override val currentArguments: Array<String>
 ) : KotlinCompilationArguments {
-    constructor(arguments: KotlinCompilationArguments) : this(ArrayList(arguments.defaultArguments), ArrayList(arguments.currentArguments))
+    constructor(arguments: KotlinCompilationArguments) : this(
+        arguments.defaultArguments,
+        arguments.currentArguments
+    )
 }
 
 data class KotlinCompilationImpl(
@@ -85,7 +88,7 @@ data class KotlinCompilationImpl(
     override val dependencies: Set<KotlinDependency>,
     override val output: KotlinCompilationOutput,
     override val arguments: KotlinCompilationArguments,
-    override val dependencyClasspath: List<String>,
+    override val dependencyClasspath: Array<String>,
     override val kotlinTaskProperties: KotlinTaskProperties
 ) : KotlinCompilation {
 
@@ -100,7 +103,7 @@ data class KotlinCompilationImpl(
         kotlinCompilation.dependencies.map { it.deepCopy(cloningCache) }.toSet(),
         KotlinCompilationOutputImpl(kotlinCompilation.output),
         KotlinCompilationArgumentsImpl(kotlinCompilation.arguments),
-        ArrayList(kotlinCompilation.dependencyClasspath),
+        kotlinCompilation.dependencyClasspath,
         KotlinTaskPropertiesImpl(kotlinCompilation.kotlinTaskProperties)
     ) {
         disambiguationClassifier = kotlinCompilation.disambiguationClassifier