[foreign-memaccess+abi] RFR: Add an internal MemoryInspection class [v3]

[Athijegannathan Sundararajan]

On Thu, 22 Sep 2022 07:30:37 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) {
>
> Per Minborg has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Fix copyright and javadoc issues

LGTM

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

Marked as reviewed by sundar (Committer).

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