software.amazon.awssdk.services.billing.endpoints.internal.SingleArgFn Maven / Gradle / Ivy

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The AWS Java SDK for Billing module holds the client classes that are used for communicating with Billing.

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/*
 * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"). You may not use this file except in compliance with
 * the License. A copy of the License is located at
 * 
 * http://aws.amazon.com/apache2.0
 * 
 * or in the "license" file accompanying this file. This file 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 software.amazon.awssdk.services.billing.endpoints.internal;

import software.amazon.awssdk.annotations.SdkInternalApi;

@SdkInternalApi
public abstract class SingleArgFn extends Fn {

    public SingleArgFn(FnNode fnNode) {
        super(fnNode);
    }

    public Expr target() {
        return expectOneArg();
    }

    @Override
    public Value eval(Scope scope) {
        return evalArg(expectOneArg().eval(scope));
    }

    protected abstract Value evalArg(Value arg);
}