Package com.google.inject.internal

Class MoreTypes

java.lang.Object

com.google.inject.internal.MoreTypes

public class MoreTypes
extends Object

Static methods for working with types that we aren't publishing in the public Types API.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static interface	MoreTypes.CompositeType	A type formed from other types, such as arrays, parameterized types or wildcard types
static class	MoreTypes.GenericArrayTypeImpl
static class	MoreTypes.ParameterizedTypeImpl
static class	MoreTypes.WildcardTypeImpl	The WildcardType interface supports multiple upper bounds and multiple lower bounds.

Field Summary

Fields

Modifier and Type	Field	Description
static final Type[]	EMPTY_TYPE_ARRAY
private static final com.google.common.collect.ImmutableMap<TypeLiteral<?>,TypeLiteral<?>>	PRIMITIVE_TO_WRAPPER

Constructor Summary

Constructors

Modifier	Constructor	Description
private	MoreTypes()

Method Summary

Modifier and Type	Method	Description
static Type	canonicalize(Type type)	Returns a type that is functionally equal but not necessarily equal according to Object.equals().
static <T> TypeLiteral<T>	canonicalizeForKey(TypeLiteral<T> typeLiteral)	Returns an type that's appropriate for use in a key.
static <T> Key<T>	canonicalizeKey(Key<T> key)	Returns a key that doesn't hold any references to parent classes.
private static void	checkNotPrimitive(Type type, String use)
private static Class<?>	declaringClassOf(TypeVariable typeVariable)	Returns the declaring class of typeVariable, or null if it was not declared by a class.
static boolean	equals(Type a, Type b)	Returns true if a and b are equal.
static Type	getGenericSupertype(Type type, Class<?> rawType, Class<?> toResolve)	Returns the generic supertype for type.
static Class<?>	getRawType(Type type)
private static int	hashCodeOrZero(Object o)
private static int	indexOf(Object[] array, Object toFind)
private static boolean	isFullySpecified(Type type)	Returns true if type is free from type variables.
static Type	resolveTypeVariable(Type type, Class<?> rawType, TypeVariable unknown)
static String	typeToString(Type type)

Methods inherited from class java.lang.Object

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

Field Details

EMPTY_TYPE_ARRAY

public static final Type[] EMPTY_TYPE_ARRAY

PRIMITIVE_TO_WRAPPER

private static final com.google.common.collect.ImmutableMap<TypeLiteral<?>,TypeLiteral<?>> PRIMITIVE_TO_WRAPPER

Constructor Details

MoreTypes

private MoreTypes()

Method Details

canonicalizeKey

public static <T> Key<T> canonicalizeKey(Key<T> key)

Returns a key that doesn't hold any references to parent classes. This is necessary for anonymous keys, so ensure we don't hold a ref to the containing module (or class) forever.

canonicalizeForKey

public static <T> TypeLiteral<T> canonicalizeForKey(TypeLiteral<T> typeLiteral)

Returns an type that's appropriate for use in a key.

If the raw type of typeLiteral is a javax.inject.Provider, this returns a com.google.inject.Provider with the same type parameters.

If the type is a primitive, the corresponding wrapper type will be returned.

Throws:

ConfigurationException - if type contains a type variable

isFullySpecified

private static boolean isFullySpecified(Type type)

Returns true if type is free from type variables.

canonicalize

public static Type canonicalize(Type type)

Returns a type that is functionally equal but not necessarily equal according to Object.equals(). The returned type is Serializable.

getRawType

public static Class<?> getRawType(Type type)

equals

public static boolean equals(Type a,
 Type b)

Returns true if a and b are equal.

hashCodeOrZero

private static int hashCodeOrZero(Object o)

typeToString

public static String typeToString(Type type)

getGenericSupertype

public static Type getGenericSupertype(Type type,
 Class<?> rawType,
 Class<?> toResolve)

Returns the generic supertype for type. For example, given a class IntegerSet, the result for when supertype is Set.class is Set<Integer> and the result when the supertype is Collection.class is Collection<Integer>.

resolveTypeVariable

public static Type resolveTypeVariable(Type type,
 Class<?> rawType,
 TypeVariable unknown)

indexOf

private static int indexOf(Object[] array,
 Object toFind)

declaringClassOf

private static Class<?> declaringClassOf(TypeVariable typeVariable)

Returns the declaring class of typeVariable, or null if it was not declared by a class.

checkNotPrimitive

private static void checkNotPrimitive(Type type,
 String use)