import java.util.IdentityHashMap


/**
 * Serialized state of an object graph containing one or more [IsolatedAction]s.
 *
 * @param G type of the root object stored in [graph]
 */
internal
class SerializedIsolatedActionGraph<G>(
    /**
     * The serialized graph.
     */
    val graph: ByteArray,

    /**
     * External references that are not serialized directly as part of the [graph].

import org.gradle.internal.declarativedsl.serialization.SchemaSerialization
import java.io.File


/**
 * In addition to creating the interpretation schema by delegating to [schemaBuilder],
 * stores the produced serialized schema in the file system (under `.gradle/declarative-schema/...` in the project).
 */
internal
class StoringInterpretationSchemaBuilder(
    private val schemaBuilder: InterpretationSchemaBuilder,

Java's built-in serialization mechanism is often slower compared to other serialization solutions.
This is due to Java's use of reflection and the need to maintain a lot of metadata.

- **Size of Serialized Data:**
Java serialization tends to produce larger serialized objects because it includes class metadata and other overhead.

- **Flexibility and Control:**

                bind(BeanCodec)
            }.build()
        )

    /**
     * Value sources and build services are currently unsupported but could eventually
     * be captured as part of the serialized action [environment][org.gradle.internal.cc.impl.isolation.SerializedIsolatedActionGraph.environment]
     **/
    private
    fun BindingsBuilder.unsupportedProviderTypes() {

        writeClass(beanType)
        // TODO - should collect the details of the decoration (eg enabled annotations, etc), and also carry this information with the serialized class reference
        //  instead of separately for each bean
        val generated = value is GeneratedSubclass
        writeBoolean(generated)
        beanStateWriterFor(value.javaClass).run {

        // Treat all parameters equally, regardless of whether they are implicit captured parameters or the lambda signature ones.
        // If any of them is of an unsupported type, a build that runs from the serialized state won't be able to provide an instance anyway.
        paramTypes.forEach { paramType ->
            unsupportedTypes[paramType]?.let { unsupportedKClass ->
                logUnsupportedLambdaParameterType(unsupportedKClass)

                visibility = Flags.VISIBILITY[classData.flags]
            }

            else -> null
        }
}


/**
 * Reads the serialized [ProtoBuf.Class] information stored in the visited [kotlin.Metadata] annotation.
 */
private
class ClassDataFromKotlinMetadataAnnotationVisitor(
    private val onClassData: (ProtoBuf.Class) -> Unit

object SerializationTest {
    private
    val pluginsSchema: AnalysisSchema = schema

    @Test
    fun `schema is serializable`() {
        val serialized = SchemaSerialization.schemaToJsonString(pluginsSchema)
        val deserialized = SchemaSerialization.schemaFromJsonString(serialized)

        val result = deserialized.resolve(
            """
            plugins {
                id("test")
            }

import org.gradle.internal.serialize.graph.ReadContext
import org.gradle.internal.serialize.graph.WriteContext


/**
 * This class exists because PublishArtifactLocalArtifactMetadata is used as its own id, and so when serialized as an id causes
 * a lot of unnecessary and unserializable state to be dragged in.
 *
 * A better change would be to split an immutable id type out of PublishArtifactLocalArtifactMetadata (or reuse one of the existing