Fix equality and serializability of scripting data, fix relevant caching behaviour

libraries/scripting/common/src/kotlin/script/experimental/api/kotlinType.kt

@@ -32,4 +32,13 @@ class KotlinType private constructor(
      * Constructs KotlinType from reflected [ktype]
      */
     constructor(type: KType) : this(type.classifier as KClass<*>)
+
+    override fun equals(other: Any?): Boolean =
+        (other as? KotlinType)?.let { typeName == it.typeName } == true
+
+    override fun hashCode(): Int = typeName.hashCode()
+
+    companion object {
+        private const val serialVersionUID: Long = 1L
+    }
 }

libraries/scripting/common/src/kotlin/script/experimental/api/scriptCompilation.kt

@@ -190,14 +190,18 @@ class RefineConfigurationBuilder : PropertiesCollection.Builder() {
 typealias RefineScriptCompilationConfigurationHandler =
             (ScriptConfigurationRefinementContext) -> ResultWithDiagnostics<ScriptCompilationConfiguration>
 
-class RefineConfigurationUnconditionallyData(
+data class RefineConfigurationUnconditionallyData(
     val handler: RefineScriptCompilationConfigurationHandler
-) : Serializable
+) : Serializable {
+    companion object { private const val serialVersionUID: Long = 1L }
+}
 
-class RefineConfigurationOnAnnotationsData(
+data class RefineConfigurationOnAnnotationsData(
     val annotations: List<KotlinType>,
     val handler: RefineScriptCompilationConfigurationHandler
-) : Serializable
+) : Serializable {
+    companion object { private const val serialVersionUID: Long = 1L }
+}
 
 
 /**

libraries/scripting/common/src/kotlin/script/experimental/api/scriptData.kt

@@ -66,7 +66,9 @@ interface ExternalSourceCode : SourceCode {
 /**
  * The source code [range] with the the optional [name]
  */
-data class ScriptSourceNamedFragment(val name: String?, val range: SourceCode.Range)
+data class ScriptSourceNamedFragment(val name: String?, val range: SourceCode.Range) : Serializable {
+    companion object { private const val serialVersionUID: Long = 1L }
+}
 
 /**
  * The general interface to the Script dependency (see platform-specific implementations)

libraries/scripting/common/src/kotlin/script/experimental/host/scriptHostUtil.kt

@@ -6,6 +6,8 @@
 package kotlin.script.experimental.host
 
 import java.io.File
+import java.io.IOError
+import java.io.IOException
 import java.net.URL
 import kotlin.script.experimental.api.*
 
@@ -47,6 +49,11 @@ open class FileScriptSource(val file: File, private val preloadedText: String? =
     override val text: String by lazy { preloadedText ?: file.readText() }
     override val name: String? get() = file.name
     override val locationId: String? get() = file.path
+
+    override fun equals(other: Any?): Boolean =
+        this === other || (other as? FileScriptSource)?.let { file.absolutePath == it.file.absolutePath && textSafe == it.textSafe } == true
+
+    override fun hashCode(): Int = file.absolutePath.hashCode() + textSafe.hashCode() * 23
 }
 
 /**
@@ -56,6 +63,11 @@ open class UrlScriptSource(override val externalLocation: URL) : ExternalSourceC
     override val text: String by lazy { externalLocation.readText() }
     override val name: String? get() = externalLocation.file
     override val locationId: String? get() = externalLocation.toString()
+
+    override fun equals(other: Any?): Boolean =
+        this === other || (other as? UrlScriptSource)?.let { externalLocation == it.externalLocation && textSafe == it.textSafe } == true
+
+    override fun hashCode(): Int = externalLocation.hashCode() + textSafe.hashCode() * 17
 }
 
 /**
@@ -71,9 +83,22 @@ open class StringScriptSource(val source: String, override val name: String? = n
     override val text: String get() = source
 
     override val locationId: String? = null
+
+    override fun equals(other: Any?): Boolean =
+        this === other || (other as? StringScriptSource)?.let { text == it.text && name == it.name && locationId == it.locationId } == true
+
+    override fun hashCode(): Int = text.hashCode() + name.hashCode() * 17 + locationId.hashCode() * 23
 }
 
 /**
  * Converts the String into the SourceCode
  */
 fun String.toScriptSource(name: String? = null): SourceCode = StringScriptSource(this, name)
+
+private val ExternalSourceCode.textSafe: String?
+    get() =
+        try {
+            text
+        } catch (e: Throwable) {
+            null
+        }

libraries/scripting/common/src/kotlin/script/experimental/util/propertiesCollection.kt

@@ -48,6 +48,11 @@ open class PropertiesCollection(private val properties: Map<Key<*>, Any?> = empt
 
     fun entries(): Set<Map.Entry<Key<*>, Any?>> = properties.entries
 
+    override fun equals(other: Any?): Boolean =
+        (other as? PropertiesCollection)?.let { it.properties == properties } == true
+
+    override fun hashCode(): Int = properties.hashCode()
+
     companion object {
         fun <T> key(defaultValue: T? = null) = PropertyKeyDelegate(defaultValue)
         fun <T> keyCopy(source: Key<T>) = PropertyKeyCopyDelegate(source)

libraries/scripting/jvm/src/kotlin/script/experimental/jvm/jvmScriptCompilation.kt

@@ -15,6 +15,8 @@ import kotlin.script.experimental.util.PropertiesCollection
 data class JvmDependency(val classpath: List<File>) : ScriptDependency {
     @Suppress("unused")
     constructor(vararg classpathEntries: File) : this(classpathEntries.asList())
+
+    companion object { private const val serialVersionUID: Long = 1L }
 }
 
 interface JvmScriptCompilationConfigurationKeys