java-type-to-lisp-array-type

lisp-array-type-to-java-type Functions

Summary

Return the Lisp array element type matching a supplied foreign type, or the foreign type matching a Lisp array element type.

Package

lw-ji

Signatures

java-type-to-lisp-array-type jtype => l-result

lisp-array-type-to-java-type lisp-type

Arguments

`jtype`⇩	A foreign type.
`lisp-type`⇩	A Lisp type specifier.

Values

l-result

A Lisp array element type, or nil.

Description

The function java-type-to-lisp-array-type returns the matching Lisp array element type for the foreign type jtype, which needs to be one of the foreign types corresponding to a Java primitive type, or nil if the argument is not such a foreign type.

The function lisp-array-type-to-java-type returns the matching foreign type, corresponding to a Java primitive type, for the Lisp array element type lisp-type, or nil if there is no match.

Both functions use the table below for doing the match:

Correspondence between Java foreign types and Lisp array element types
Foreign type	Lisp type
jbyte	`(signed-byte 8)`
jshort	`(signed-byte 16)`
jint	`(signed-byte 32)`
jlong	`(signed-byte 64)`
jdouble	double-float
jfloat	single-float
jchar	`(unsigned-byte 16)`
jboolean	`(unsigned-byte 8)`