gnu.kawa.functions

Class Arrays

java.lang.Object

gnu.kawa.functions.Arrays

public class Arrays
extends java.lang.Object

Static methods for implementing Scheme (SRFI-25) arrays.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Arrays.BuiltArray<E> Class for implementing computed (virtual) array.
static class	Arrays.ProcTransformedArray<E> General array "view" class using a Procedure index transformer.

Constructor Summary

Constructors

Constructor and Description
Arrays()

Method Summary

Modifier and Type	Method and Description
static GeneralArray	allocateArray(Array shape) Convenience method for resolving shape specifiers.
static <E> Array<E>	getBuiltArray(Array shape, Procedure getter)
static <E> Array<E>	getBuiltArray(Array shape, Procedure getter, Procedure setter)
static <E> Array<E>	getTransformed(Array<E> base, Procedure transformer, Array shape)
static int[]	handleShapeSpecifier(Array shape, int rank, int[] dimensions, boolean toShape) Process a shape specifier.
static Array	makeFromSimple(int[] dimensions, int[] lowBounds, java.lang.Object buffer, PrimType elementType)
static Array	makeFromValues(Array shape, java.lang.Object[] values)
static Array	makeSimple(Array shape, SimpleVector base)
static Array	shape(java.lang.Object[] vals) Convert a sequence of (lower,upper) bounds to a SRFI-25 shape.
static Array	shareArray(Array array, Array shape, Procedure proc)

Methods inherited from class java.lang.Object

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

Constructor Detail

Arrays

public Arrays()

Method Detail

shape

public static Array shape(java.lang.Object[] vals)

Convert a sequence of (lower,upper) bounds to a SRFI-25 shape.

handleShapeSpecifier

public static int[] handleShapeSpecifier(Array shape,
                                         int rank,
                                         int[] dimensions,
                                         boolean toShape)

Process a shape specifier.

Parameters:

shape - A canonical shape (rank*2 array) or a shape specifier (vector whose length is the rank).

rank - The rank of arrays of that shape.

dimensions - Ignored if toShape. Otherwise, must have length==rank, and is modified with (hi-lo).

toShape: - True if used by ->shape.

Returns:

If toShape: a rank*2 shape array as an int[]; otherwise: vector of low-bounds (or null if all zero).

allocateArray

public static GeneralArray allocateArray(Array shape)

Convenience method for resolving shape specifiers.

makeFromValues

public static Array makeFromValues(Array shape,
                                   java.lang.Object[] values)

makeFromSimple

public static Array makeFromSimple(int[] dimensions,
                                   int[] lowBounds,
                                   java.lang.Object buffer,
                                   PrimType elementType)

makeSimple

public static Array makeSimple(Array shape,
                               SimpleVector base)

shareArray

public static Array shareArray(Array array,
                               Array shape,
                               Procedure proc)
                        throws java.lang.Throwable

Throws:

java.lang.Throwable

getBuiltArray

public static <E> Array<E> getBuiltArray(Array shape,
                                         Procedure getter)

getBuiltArray

public static <E> Array<E> getBuiltArray(Array shape,
                                         Procedure getter,
                                         Procedure setter)

getTransformed

public static <E> Array<E> getTransformed(Array<E> base,
                                          Procedure transformer,
                                          Array shape)