RFR 8182270: JShell API: snippet information / 8166334: jshell tool: shortcut: expression/statement to method

[Robert Field]

Please review: Adds new shift-tab-m shortcut for converting expressions 
or statements into methods.  And adds to the JShell API, non-evaluative 
Snippet information access, required the new tool functionality, and 
generally useful for analyzing source snippets before evaluation.

Update...

With input from Jan, added direct UI level tests of, not only the new 
shift-tab-m functionality, but, of all shift-tab functionality.

Fixed an obscure issue of temp variable numbering after ctrl-C'ing a 
shift-tab-m.


On 06/15/17 23:14, Robert Field wrote:
> Please review --
>
> Bugs:
>
>     JShell API: Tools need snippet information without evaluating snippet
>     https://bugs.openjdk.java.net/browse/JDK-8182270
>
>     jshell tool: shortcut: expression/statement to method
>     https://bugs.openjdk.java.net/browse/JDK-8166334
>
> Webrev:
>
>     http://cr.openjdk.java.net/~rfield/8182270v0.webrev/
>
> Thanks,
> Robert
>