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/Kotlin

ContractBuilder

Platform and version requirements: JVM (1.3), JS (1.3), Native (1.3)

@ExperimentalContracts interface ContractBuilder

Provides a scope, where the functions of the contract DSL, such as returns, callsInPlace, etc., can be used to describe the contract of a function.

This type is used as a receiver type of the lambda function passed to the contract function.

See Also

contract

Platform and version requirements: JVM (1.0), JS (1.0), Native (1.0)

Specifies that the function parameter lambda is invoked in place.

abstract fun <R> callsInPlace(
    lambda: Function<R>, 
    kind: InvocationKind = InvocationKind.UNKNOWN
): CallsInPlace

Platform and version requirements: JVM (1.0), JS (1.0), Native (1.0)

Describes a situation when a function returns normally, without any exceptions thrown.

abstract fun returns(): Returns

Describes a situation when a function returns normally with the specified return value.

abstract fun returns(value: Any?): Returns

Platform and version requirements: JVM (1.0), JS (1.0), Native (1.0)

Describes a situation when a function returns normally with any value that is not null.

abstract fun returnsNotNull(): ReturnsNotNull