dafny

Class Array<T>

java.lang.Object

dafny.Array<T>

Type Parameters:

T - The type of the elements in the array, or if that type is primitive, the boxed version of that type (e.g., Integer for int).

All Implemented Interfaces:

java.lang.Cloneable

public final class Array<T>
extends java.lang.Object
implements java.lang.Cloneable

A wrapper for an array that may be of primitive type. Essentially acts as one "big box" for many primitives, as an alternative to putting each in their own box. Much faster than using Array operations to operate on possibly-primitive arrays. This isn't used by generated Dafny code, which directly uses values of type Object when the element type isn't known, relying on a TypeDescriptor passed in. It's much more pleasant to use, and more type-safe, than the bare TypeDescriptor operations, however, so extern implementors may be interested. It is also used to implement DafnySequence.

Method Summary

Modifier and Type	Method and Description
Array<T>	copy()
void	copy(int offset, Array<T> to, int toOffset, int length)
Array<T>	copyOfRange(int lo, int hi)
TypeDescriptor<T>	elementType()
void	fill(T value)
static <T> Array<T>	fromList(TypeDescriptor<T> eltType, java.util.List<T> elements)
T	get(int index)
int	length()
static <T> Array<T>	newArray(TypeDescriptor<T> eltType, int length)
void	set(int index, T value)
boolean	shallowEquals(Array<T> other)
java.lang.Object	unwrap()
static java.lang.Object	unwrap(Array<?> array)
static boolean[]	unwrapBooleans(Array<java.lang.Boolean> array)
static byte[]	unwrapBytes(Array<java.lang.Byte> array)
static char[]	unwrapChars(Array<java.lang.Character> array)
static int[]	unwrapInts(Array<java.lang.Integer> array)
static long[]	unwrapLongs(Array<java.lang.Long> array)
static <T> T[]	unwrapObjects(Array<T> array)
static short[]	unwrapShorts(Array<java.lang.Short> array)
static Array<java.lang.Boolean>	wrap(boolean[] array)
static Array<java.lang.Byte>	wrap(byte[] array)
static Array<java.lang.Character>	wrap(char[] array)
static Array<java.lang.Integer>	wrap(int[] array)
static Array<java.lang.Long>	wrap(long[] array)
static Array<java.lang.Short>	wrap(short[] array)
static <T> Array<T>	wrap(TypeDescriptor<T> eltType, java.lang.Object array)
static <T> Array<T>	wrap(TypeDescriptor<T> eltType, T[] array)

Methods inherited from class java.lang.Object

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

Method Detail

newArray

public static <T> Array<T> newArray(TypeDescriptor<T> eltType,
                                    int length)

fromList

public static <T> Array<T> fromList(TypeDescriptor<T> eltType,
                                    java.util.List<T> elements)

elementType

public TypeDescriptor<T> elementType()

unwrap

public java.lang.Object unwrap()

get

public T get(int index)

set

public void set(int index,
                T value)

length

public int length()

fill

public void fill(T value)

copy

public Array<T> copy()

copy

public void copy(int offset,
                 Array<T> to,
                 int toOffset,
                 int length)

copyOfRange

public Array<T> copyOfRange(int lo,
                            int hi)

shallowEquals

public boolean shallowEquals(Array<T> other)

wrap

public static <T> Array<T> wrap(TypeDescriptor<T> eltType,
                                java.lang.Object array)

wrap

public static <T> Array<T> wrap(TypeDescriptor<T> eltType,
                                T[] array)

wrap

public static Array<java.lang.Byte> wrap(byte[] array)

wrap

public static Array<java.lang.Short> wrap(short[] array)

wrap

public static Array<java.lang.Integer> wrap(int[] array)

wrap

public static Array<java.lang.Long> wrap(long[] array)

wrap

public static Array<java.lang.Boolean> wrap(boolean[] array)

wrap

public static Array<java.lang.Character> wrap(char[] array)

unwrap

public static java.lang.Object unwrap(Array<?> array)

unwrapObjects

public static <T> T[] unwrapObjects(Array<T> array)

unwrapBytes

public static byte[] unwrapBytes(Array<java.lang.Byte> array)

unwrapShorts

public static short[] unwrapShorts(Array<java.lang.Short> array)

unwrapInts

public static int[] unwrapInts(Array<java.lang.Integer> array)

unwrapLongs

public static long[] unwrapLongs(Array<java.lang.Long> array)

unwrapBooleans

public static boolean[] unwrapBooleans(Array<java.lang.Boolean> array)

unwrapChars

public static char[] unwrapChars(Array<java.lang.Character> array)