com.google.gson.internal

Class $Gson$Types

java.lang.Object

com.google.gson.internal.$Gson$Types

public final class $Gson$Types
extends java.lang.Object

Static methods for working with types.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	$Gson$Types.GenericArrayTypeImpl
private static class	$Gson$Types.ParameterizedTypeImpl
private static class	$Gson$Types.WildcardTypeImpl The WildcardType interface supports multiple upper bounds and multiple lower bounds.

Field Summary

Fields

Modifier and Type	Field and Description
(package private) static java.lang.reflect.Type[]	EMPTY_TYPE_ARRAY

Constructor Summary

Constructors

Modifier	Constructor and Description
private	$Gson$Types()

Method Summary

Modifier and Type	Method and Description
static java.lang.reflect.GenericArrayType	arrayOf(java.lang.reflect.Type componentType) Returns an array type whose elements are all instances of componentType.
static java.lang.reflect.Type	canonicalize(java.lang.reflect.Type type) Returns a type that is functionally equal but not necessarily equal according to Object.equals().
(package private) static void	checkNotPrimitive(java.lang.reflect.Type type)
private static java.lang.Class<?>	declaringClassOf(java.lang.reflect.TypeVariable<?> typeVariable) Returns the declaring class of typeVariable, or null if it was not declared by a class.
(package private) static boolean	equal(java.lang.Object a, java.lang.Object b)
static boolean	equals(java.lang.reflect.Type a, java.lang.reflect.Type b) Returns true if a and b are equal.
static java.lang.reflect.Type	getArrayComponentType(java.lang.reflect.Type array) Returns the component type of this array type.
static java.lang.reflect.Type	getCollectionElementType(java.lang.reflect.Type context, java.lang.Class<?> contextRawType) Returns the element type of this collection type.
(package private) static java.lang.reflect.Type	getGenericSupertype(java.lang.reflect.Type context, java.lang.Class<?> rawType, java.lang.Class<?> toResolve) Returns the generic supertype for supertype.
static java.lang.reflect.Type[]	getMapKeyAndValueTypes(java.lang.reflect.Type context, java.lang.Class<?> contextRawType) Returns a two element array containing this map's key and value types in positions 0 and 1 respectively.
static java.lang.Class<?>	getRawType(java.lang.reflect.Type type)
(package private) static java.lang.reflect.Type	getSupertype(java.lang.reflect.Type context, java.lang.Class<?> contextRawType, java.lang.Class<?> supertype) Returns the generic form of supertype.
(package private) static int	hashCodeOrZero(java.lang.Object o)
private static int	indexOf(java.lang.Object[] array, java.lang.Object toFind)
static java.lang.reflect.ParameterizedType	newParameterizedTypeWithOwner(java.lang.reflect.Type ownerType, java.lang.reflect.Type rawType, java.lang.reflect.Type... typeArguments) Returns a new parameterized type, applying typeArguments to rawType and enclosed by ownerType.
static java.lang.reflect.Type	resolve(java.lang.reflect.Type context, java.lang.Class<?> contextRawType, java.lang.reflect.Type toResolve)
private static java.lang.reflect.Type	resolve(java.lang.reflect.Type context, java.lang.Class<?> contextRawType, java.lang.reflect.Type toResolve, java.util.Collection<java.lang.reflect.TypeVariable> visitedTypeVariables)
(package private) static java.lang.reflect.Type	resolveTypeVariable(java.lang.reflect.Type context, java.lang.Class<?> contextRawType, java.lang.reflect.TypeVariable<?> unknown)
static java.lang.reflect.WildcardType	subtypeOf(java.lang.reflect.Type bound) Returns a type that represents an unknown type that extends bound.
static java.lang.reflect.WildcardType	supertypeOf(java.lang.reflect.Type bound) Returns a type that represents an unknown supertype of bound.
static java.lang.String	typeToString(java.lang.reflect.Type type)

Methods inherited from class java.lang.Object

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

Field Detail

EMPTY_TYPE_ARRAY

static final java.lang.reflect.Type[] EMPTY_TYPE_ARRAY

Constructor Detail

$Gson$Types

private $Gson$Types()

Method Detail

newParameterizedTypeWithOwner

public static java.lang.reflect.ParameterizedType newParameterizedTypeWithOwner(java.lang.reflect.Type ownerType,
                                                                                java.lang.reflect.Type rawType,
                                                                                java.lang.reflect.Type... typeArguments)

Returns a new parameterized type, applying typeArguments to rawType and enclosed by ownerType.

Returns:

a serializable parameterized type.

arrayOf

public static java.lang.reflect.GenericArrayType arrayOf(java.lang.reflect.Type componentType)

Returns an array type whose elements are all instances of componentType.

Returns:

a serializable generic array type.

subtypeOf

public static java.lang.reflect.WildcardType subtypeOf(java.lang.reflect.Type bound)

Returns a type that represents an unknown type that extends bound. For example, if bound is CharSequence.class, this returns ? extends CharSequence. If bound is Object.class, this returns ?, which is shorthand for ? extends Object.

supertypeOf

public static java.lang.reflect.WildcardType supertypeOf(java.lang.reflect.Type bound)

Returns a type that represents an unknown supertype of bound. For example, if bound is String.class, this returns ? super String.

canonicalize

public static java.lang.reflect.Type canonicalize(java.lang.reflect.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 java.lang.Class<?> getRawType(java.lang.reflect.Type type)

equal

static boolean equal(java.lang.Object a,
                     java.lang.Object b)

equals

public static boolean equals(java.lang.reflect.Type a,
                             java.lang.reflect.Type b)

Returns true if a and b are equal.

hashCodeOrZero

static int hashCodeOrZero(java.lang.Object o)

typeToString

public static java.lang.String typeToString(java.lang.reflect.Type type)

getGenericSupertype

static java.lang.reflect.Type getGenericSupertype(java.lang.reflect.Type context,
                                                  java.lang.Class<?> rawType,
                                                  java.lang.Class<?> toResolve)

Returns the generic supertype for supertype. 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>.

getSupertype

static java.lang.reflect.Type getSupertype(java.lang.reflect.Type context,
                                           java.lang.Class<?> contextRawType,
                                           java.lang.Class<?> supertype)

Returns the generic form of supertype. For example, if this is ArrayList<String>, this returns Iterable<String> given the input Iterable.class.

Parameters:

supertype - a superclass of, or interface implemented by, this.

getArrayComponentType

public static java.lang.reflect.Type getArrayComponentType(java.lang.reflect.Type array)

Returns the component type of this array type.

Throws:

java.lang.ClassCastException - if this type is not an array.

getCollectionElementType

public static java.lang.reflect.Type getCollectionElementType(java.lang.reflect.Type context,
                                                              java.lang.Class<?> contextRawType)

Returns the element type of this collection type.

Throws:

java.lang.IllegalArgumentException - if this type is not a collection.

getMapKeyAndValueTypes

public static java.lang.reflect.Type[] getMapKeyAndValueTypes(java.lang.reflect.Type context,
                                                              java.lang.Class<?> contextRawType)

Returns a two element array containing this map's key and value types in positions 0 and 1 respectively.

resolve

public static java.lang.reflect.Type resolve(java.lang.reflect.Type context,
                                             java.lang.Class<?> contextRawType,
                                             java.lang.reflect.Type toResolve)

resolve

private static java.lang.reflect.Type resolve(java.lang.reflect.Type context,
                                              java.lang.Class<?> contextRawType,
                                              java.lang.reflect.Type toResolve,
                                              java.util.Collection<java.lang.reflect.TypeVariable> visitedTypeVariables)

resolveTypeVariable

static java.lang.reflect.Type resolveTypeVariable(java.lang.reflect.Type context,
                                                  java.lang.Class<?> contextRawType,
                                                  java.lang.reflect.TypeVariable<?> unknown)

indexOf

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

declaringClassOf

private static java.lang.Class<?> declaringClassOf(java.lang.reflect.TypeVariable<?> typeVariable)

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

checkNotPrimitive

static void checkNotPrimitive(java.lang.reflect.Type type)