com.google.auto.factory.internal

Class Preconditions

java.lang.Object

com.google.auto.factory.internal.Preconditions

public final class Preconditions
extends Object

An adaptation of Guava's com.google.common.base.Preconditions that is specially tailored to support checks applied in AutoFactory's generated code.

Method Summary

Modifier and Type	Method and Description
static <T> T	checkNotNull(T reference, int argumentIndex) Ensures that an object reference passed as a parameter to the calling method is not null.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

checkNotNull

public static <T> T checkNotNull(T reference,
                                 int argumentIndex)

Ensures that an object reference passed as a parameter to the calling method is not null.

Parameters:

reference - an object reference

argumentIndex - the index of the argument for the AutoFactory method which is being checked.

Returns:

the non-null reference that was validated

Throws:

NullPointerException - if reference is null