// OPT_IN: kotlin.contracts.ExperimentalContracts

/*
 * KOTLIN DIAGNOSTICS NOT LINKED SPEC TEST (POSITIVE)
 *
 * SECTIONS: contracts, analysis, smartcasts
 * NUMBER: 3
 * DESCRIPTION: Smartcasts using Returns effects with complex (conjunction/disjunction) type checking and not-null conditions inside contract.
 */

// FILE: contracts.kt

package contracts

import kotlin.contracts.*

// TESTCASE NUMBER: 1
fun case_1(value_1: Any?, value_2: Any?) {
    contract { returns() implies (value_1 is String && value_2 is Number) }
    if (!(value_1 is String && value_2 is Number)) throw Exception()
}

// TESTCASE NUMBER: 2
fun case_2(value_1: Any?, value_2: Any?) {
    contract { returns() implies (value_1 is String && value_2 == null) }
    if (!(value_1 is String && value_2 == null)) throw Exception()
}

// TESTCASE NUMBER: 3
fun case_3(value_1: Any?, value_2: Any?, value_3: Any?, value_4: Any?) {
    contract { returns() implies (value_1 is Float? && value_1 != null && value_2 != null && value_3 != null && value_4 != null) }
    if (!(value_1 is Float? && value_1 != null && value_2 != null && value_3 != null && value_4 != null)) throw Exception()
}

// TESTCASE NUMBER: 4
fun case_4_1(value_1: Any?, value_2: Any?): Boolean {
    contract { returns(true) implies (value_1 is String && value_2 is Number) }
    return value_1 is String && value_2 is Number
}
fun case_4_2(value_1: Any?, value_2: Any?): Boolean {
    contract { returns(false) implies (value_1 is String && value_2 is Number) }
    return !(value_1 is String && value_2 is Number)
}
fun case_4_3(value_1: Any?, value_2: Any?): Boolean? {
    contract { returnsNotNull() implies (value_1 is String && value_2 is Number) }
    return if (value_1 is String && value_2 is Number) true else null
}
fun case_4_4(value_1: Any?, value_2: Any?): Boolean? {
    contract { returns(null) implies (value_1 is String && value_2 is Number) }
    return if (value_1 is String && value_2 is Number) null else true
}

// TESTCASE NUMBER: 5
fun case_5_1(value_1: Any?, value_2: Any?): Boolean {
    contract { returns(true) implies (value_1 is String && value_2 == null) }
    return value_1 is String && value_2 == null
}
fun case_5_2(value_1: Any?, value_2: Any?): Boolean {
    contract { returns(false) implies (value_1 is String && value_2 == null) }
    return !(value_1 is String && value_2 == null)
}
fun case_5_3(value_1: Any?, value_2: Any?): Boolean? {
    contract { returnsNotNull() implies (value_1 is String && value_2 == null) }
    return if (value_1 is String && value_2 == null) true else null
}
fun case_5_4(value_1: Any?, value_2: Any?): Boolean? {
    contract { returns(null) implies (value_1 is String && value_2 == null) }
    return if (value_1 is String && value_2 == null) null else true
}

// TESTCASE NUMBER: 6
fun case_6_1(value_1: Any?, value_2: Any?, value_3: Any?, value_4: Any?): Boolean {
    contract { returns(true) implies (value_1 is Float? && value_1 != null && value_2 != null && value_3 != null && value_4 != null) }
    return value_1 is Float? && value_1 != null && value_2 != null && value_3 != null && value_4 != null
}
fun case_6_2(value_1: Any?, value_2: Any?, value_3: Any?, value_4: Any?): Boolean {
    contract { returns(false) implies (value_1 is Float? && value_1 != null && value_2 != null && value_3 != null && value_4 != null) }
    return !(value_1 is Float? && value_1 != null && value_2 != null && value_3 != null && value_4 != null)
}
fun case_6_3(value_1: Any?, value_2: Any?, value_3: Any?, value_4: Any?): Boolean? {
    contract { returnsNotNull() implies (value_1 is Float? && value_1 != null && value_2 != null && value_3 != null && value_4 != null) }
    return if (value_1 is Float? && value_1 != null && value_2 != null && value_3 != null && value_4 != null) true else null
}
fun case_6_4(value_1: Any?, value_2: Any?, value_3: Any?, value_4: Any?): Boolean? {
    contract { returns(null) implies (value_1 is Float? && value_1 != null && value_2 != null && value_3 != null && value_4 != null) }
    return if (value_1 is Float? && value_1 != null && value_2 != null && value_3 != null && value_4 != null) null else true
}

// FILE: main.kt

import contracts.*

// TESTCASE NUMBER: 1
fun case_1(value_1: Any?, value_2: Any?) {
    contracts.case_1(value_1, value_2)
    println(value_1.length)
    println(value_2.toByte())
}

// TESTCASE NUMBER: 2
fun case_2(value_1: Any?, value_2: Any?) {
    contracts.case_2(value_1, value_2)
    println(value_1.length)
    println(value_2?.<!UNRESOLVED_REFERENCE!>toByte<!>())
}

// TESTCASE NUMBER: 3
class case_3_class {
    val prop_1: Int? = 10
    fun case_3(value_1: Any?, value_2: Number?) {
        val o = case_3_class()
        contracts.case_3(value_1, value_2, o.prop_1, this.prop_1)
        println(value_1.dec())
        println(value_2<!UNNECESSARY_SAFE_CALL!>?.<!>toByte())
        println(o.prop_1.plus(3))
    }
}

// TESTCASE NUMBER: 4
fun case_4(value_1: Any?, value_2: Any?) {
    if (contracts.case_4_1(value_1, value_2)) {
        println(value_1.length)
        println(value_2.toByte())
    }
    if (!contracts.case_4_2(value_1, value_2)) {
        println(value_1.length)
        println(value_2.toByte())
    }
    if (contracts.case_4_3(value_1, value_2) != null) {
        println(value_1.length)
        println(value_2.toByte())
    }
    if (contracts.case_4_4(value_1, value_2) == null) {
        println(value_1.length)
        println(value_2.toByte())
    }
}

// TESTCASE NUMBER: 5
fun case_5(value_1: Any?, value_2: Any?) {
    if (contracts.case_5_1(value_1, value_2)) {
        println(value_1.length)
        println(value_2?.<!UNRESOLVED_REFERENCE!>toByte<!>())
    }
    if (!contracts.case_5_2(value_1, value_2)) {
        println(value_1.length)
        println(value_2?.<!UNRESOLVED_REFERENCE!>toByte<!>())
    }
    if (contracts.case_5_3(value_1, value_2) != null) {
        println(value_1.length)
        println(value_2?.<!UNRESOLVED_REFERENCE!>toByte<!>())
    }
    if (contracts.case_5_4(value_1, value_2) == null) {
        println(value_1.length)
        println(value_2?.<!UNRESOLVED_REFERENCE!>toByte<!>())
    }
}

// TESTCASE NUMBER: 6
class case_6_class {
    val prop_1: Int? = 10
    fun case_6(value_1: Any?, value_2: Number?) {
        val o = case_6_class()
        if (contracts.case_6_1(value_1, value_2, o.prop_1, this.prop_1)) {
            println(value_1.dec())
            println(value_2<!UNNECESSARY_SAFE_CALL!>?.<!>toByte())
            println(o.prop_1.plus(3))
        }
        if (!contracts.case_6_2(value_1, value_2, o.prop_1, this.prop_1)) {
            println(value_1.dec())
            println(value_2<!UNNECESSARY_SAFE_CALL!>?.<!>toByte())
            println(o.prop_1.plus(3))
        }
        if (contracts.case_6_3(value_1, value_2, o.prop_1, this.prop_1) != null) {
            println(value_1.dec())
            println(value_2<!UNNECESSARY_SAFE_CALL!>?.<!>toByte())
            println(o.prop_1.plus(3))
        }
        if (contracts.case_6_4(value_1, value_2, o.prop_1, this.prop_1) == null) {
            println(value_1.dec())
            println(value_2<!UNNECESSARY_SAFE_CALL!>?.<!>toByte())
            println(o.prop_1.plus(3))
        }
    }
}
