kotlin.internal.jdk8.JDK8PlatformImplementations.kt Maven / Gradle / Ivy

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Kotlin Standard Library JDK 8 extension

There is a newer version: 2.1.0-Beta1

/*
 * Copyright 2010-2017 JetBrains s.r.o.
 *
 * 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.
 */

@file:Suppress("INVISIBLE_REFERENCE", "INVISIBLE_MEMBER", "CANNOT_OVERRIDE_INVISIBLE_MEMBER")
package kotlin.internal.jdk8

import java.util.regex.MatchResult
import java.util.regex.Matcher
import kotlin.internal.PlatformImplementations
import kotlin.internal.jdk7.JDK7PlatformImplementations
import kotlin.random.Random
import kotlin.random.jdk8.PlatformThreadLocalRandom

internal open class JDK8PlatformImplementations : JDK7PlatformImplementations() {

    override fun getMatchResultNamedGroup(matchResult: MatchResult, name: String): MatchGroup? {
        val matcher = matchResult as? Matcher ?: throw UnsupportedOperationException("Retrieving groups by name is not supported on this platform.")

        val range = matcher.start(name)..matcher.end(name) - 1
        return if (range.start >= 0)
            MatchGroup(matcher.group(name), range)
        else
            null
    }

    override fun defaultPlatformRandom(): Random = PlatformThreadLocalRandom()

}