org.gradle.configurationcache.serialization.codecs.ImmutableMapCodec.kt Maven / Gradle / Ivy

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/*
 * Copyright 2020 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.gradle.configurationcache.serialization.codecs

import com.google.common.collect.ImmutableMap
import org.gradle.configurationcache.serialization.Codec
import org.gradle.configurationcache.serialization.ReadContext
import org.gradle.configurationcache.serialization.WriteContext
import org.gradle.configurationcache.serialization.writeMap


object ImmutableMapCodec : Codec> {

    override suspend fun WriteContext.encode(value: ImmutableMap) {
        writeMap(value)
    }

    override suspend fun ReadContext.decode(): ImmutableMap? {
        val size = readSmallInt()
        val builder = ImmutableMap.builderWithExpectedSize(size)
        for (i in 0 until size) {
            val key = read()!!
            val value = read()!!
            builder.put(key, value)
        }
        return builder.build()
    }
}