import groovy.transform.CompileStatic

/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you 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.
 */
def testSCO() {
    assert 3 == 1??.plus(2)
    assert 6 == 1??.plus(2).plus(3)
    assert 6 == 1??.plus(2)?.plus(3)
    assert 6 == 1??.plus(2)??.plus(3)
    assert 10 == 1??.plus(2)?.plus(3).plus(4)
    assert 10 == 1?.plus(2)??.plus(3).plus(4)
    assert 10 == 1?.plus(2)?.plus(3)??.plus(4)
    assert 10 == 1.plus(2).plus(3)??.plus(4)

    Integer num = null
    assert null == num??.plus(2).plus(3)
    assert null == num??.plus(2).plus(3).plus(4)
    assert null == num??.plus(2)??.plus(3).plus(4)
    assert null == num??.plus(2)??.plus(3)?.plus(4)

    String str = null
    assert null == str??.substring(0, 1)[0]
}
testSCO()

@CompileStatic
def testCsSCO() {
    assert 3 == 1??.plus(2)
    assert 6 == 1??.plus(2).plus(3)
    assert 6 == 1??.plus(2)?.plus(3)
    assert 6 == 1??.plus(2)??.plus(3)
    assert 10 == 1??.plus(2)?.plus(3).plus(4)
    assert 10 == 1?.plus(2)??.plus(3).plus(4)
    assert 10 == 1?.plus(2)?.plus(3)??.plus(4)
    assert 10 == 1.plus(2).plus(3)??.plus(4)

    Integer num = null
    assert null == num??.plus(2).plus(3)
    assert null == num??.plus(2).plus(3).plus(4)
    assert null == num??.plus(2)??.plus(3).plus(4)
    assert null == num??.plus(2)??.plus(3)?.plus(4)

    String str = null
    assert null == str??.substring(0, 1)[0]
}
testCsSCO()
