[foreign-memaccess+abi] Integrated: Add an internal MemoryInspection class

[Per Minborg]

On Wed, 7 Sep 2022 11:29:11 GMT, Per Minborg <duke at openjdk.org> wrote:

> This PR adds a way of inspecting a `MemoryLayout` through a `MemoryLayout`.
> 
> 
>     /**
>      * Returns a human-readable view of the provided {@linkplain MemorySegment memory} viewed
>      * through the provided {@linkplain MemoryLayout layout} using the provided {@linkplain ValueLayoutRenderer renderer}.
>      * <p>
>      * The exact format of the returned view is unspecified and should not
>      * be acted upon programmatically.
>      * <p>
>      * As an example, a MemorySegment viewed though the following memory layout
>      * {@snippet lang = java:
>      * var layout = MemoryLayout.structLayout(
>      *         ValueLayout.JAVA_INT.withName("x"),
>      *         ValueLayout.JAVA_INT.withName("y")
>      * ).withName("Point");
>      *
>      * MemoryInspection.inspect(segment, layout, ValueLayoutRenderer.standard())
>      *     .forEach(System.out::println);
>      *
>      *}
>      * might be rendered to something like this:
>      * {@snippet lang = text:
>      * Point {
>      *   x=1,
>      *   y=2
>      * }
>      *}
>      * <p>
>      * This method is intended to view memory segments through small and medium-sized memory layouts.
>      *
>      * @param segment  to be viewed
>      * @param layout   to use as a layout when viewing the memory segment
>      * @param renderer to apply when rendering value layouts
>      * @return a view of the memory abstraction viewed through the memory layout
>      */
>     public static Stream<String> inspect(MemorySegment segment,
>                                          MemoryLayout layout,
>                                          ValueLayoutRenderer renderer) {

This pull request has now been integrated.

Changeset: b30ae8f7
Author:    Per Minborg <pminborg at gmail.com>
Committer: Athijegannathan Sundararajan <sundar at openjdk.org>
URL:       https://git.openjdk.org/panama-foreign/commit/b30ae8f70f335c654cccb0e6a924edf12c17238e
Stats:     685 lines in 3 files changed: 685 ins; 0 del; 0 mod

Add an internal MemoryInspection class

Reviewed-by: mcimadamore, sundar

-------------

PR: https://git.openjdk.org/panama-foreign/pull/715