// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// https://developers.google.com/protocol-buffers/
//
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// modification, are permitted provided that the following conditions are
// met:
//
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// * Redistributions in binary form must reproduce the above
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package com.google.protobuf.kotlin
/**
* A simple wrapper around a [Map] with an extra generic parameter that can be used to disambiguate
* extension methods.
*
* <p>This class is used by Kotlin protocol buffer extensions, and its constructor is public only
* because generated message code is in a different compilation unit. Others should not use this
* class directly in any way.
*/
@Suppress("unused") // the unused type parameter
class DslMap<K, V, P : DslProxy> @OnlyForUseByGeneratedProtoCode constructor(
private val delegate: Map<K, V>
) : Map<K, V> by delegate {
// We allocate the wrappers on calls to get, not with lazy {...}, because lazy allocates
// a few objects up front, and any kind of query operation on this object should be rare.
override val entries: Set<Map.Entry<K, V>>
get() = UnmodifiableMapEntries(delegate.entries)
override val keys: Set<K>
get() = UnmodifiableSet(delegate.keys)
override val values: Collection<V>
get() = UnmodifiableCollection(delegate.values)
override fun equals(other: Any?): Boolean = delegate == other
override fun hashCode(): Int = delegate.hashCode()
override fun toString(): String = delegate.toString()
}
// TODO(lowasser): investigate making this an inline class
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