kotlin.src.main.kotlin.com.google.protobuf.DslMap.kt Maven / Gradle / Ivy
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// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// https://developers.google.com/protocol-buffers/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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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.
*
* 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
@OnlyForUseByGeneratedProtoCode
constructor(private val delegate: Map) : Map 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>
get() = UnmodifiableMapEntries(delegate.entries)
override val keys: Set
get() = UnmodifiableSet(delegate.keys)
override val values: Collection
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: investigate making this an inline class