Hmm... I can't find any Java samples (although all scripts access Java
API ;) ) though. But, if you want to look at the generated tree for
various cases, you can look at this:
http://hg.openjdk.java.net/jdk9/dev/nashorn/file/a618d3e89fde/test/script/nosecurity/treeapi
Thanks,
-Sundar
On 2/1/2016 4:04 PM, Geir Magnusson Jr. wrote:
Thank you both for the help.
Are there any examples in working in Java for either 8 or 9? I don’t have a
ton of interested in actually *working* in javascript.
On Jan 31, 2016, at 7:19 PM, Sundararajan Athijegannathan
<sundararajan.athijegannat...@oracle.com> wrote:
Hi,
jdk9 samples for Nashorn Parser API (http://openjdk.java.net/jeps/236) that
Attila mentioned are:
http://hg.openjdk.java.net/jdk9/dev/nashorn/file/a618d3e89fde/samples/evalcheck.js
http://hg.openjdk.java.net/jdk9/dev/nashorn/file/a618d3e89fde/samples/findproto.js
http://hg.openjdk.java.net/jdk9/dev/nashorn/file/a618d3e89fde/samples/findwith.js
http://hg.openjdk.java.net/jdk9/dev/nashorn/file/a618d3e89fde/samples/flexijson.js
http://hg.openjdk.java.net/jdk9/dev/nashorn/file/a618d3e89fde/samples/nashornastviewer.js
http://hg.openjdk.java.net/jdk9/dev/nashorn/file/a618d3e89fde/samples/prettyprinter.js
http://hg.openjdk.java.net/jdk9/dev/nashorn/file/a618d3e89fde/samples/withcheck.js
https://blogs.oracle.com/nashorn/entry/flexible_json_with_nashorn_parser
For jdk8u, it is better to avoid nashorn internal classes. There is a JS "parse" API. You can
load("nashorn:parser.js") and use "parse" function defined in it.
http://hg.openjdk.java.net/jdk9/dev/nashorn/file/a618d3e89fde/samples/parser.js
http://hg.openjdk.java.net/jdk9/dev/nashorn/file/a618d3e89fde/samples/astviewer.js
Hope this helps,
-Sundar
On 1/31/2016 3:48 PM, Attila Szegedi wrote:
If you don’t mind using a prerelease JDE, JDK9 version of Nashorn has a public
JavaScript parser API:
<http://download.java.net/jdk9//docs/jdk/api/nashorn/jdk/nashorn/api/tree/package-summary.html>
In the JDK8 world, there’s no supported way, but you can try using
jdk.nashorn.internal.parser.Parser at your own risk (of it changing in an
incompatible way, or going away entirely, or becoming inaccessible in JDK9). It
returns a jdk.nashorn.internal.ir.FunctionNode, an internal Nashorn AST class
that represents both functions and the top-level program. All of the AST is in
the jdk.nashorn.internal.ir package. It was never meant for public consumption,
so it’s not as nice to work with as the JDK9 public API, e.g. there are some
dubious choices in the class hierarchy etc. that you’ll need to live with.
HTH,
Attila.
On Jan 30, 2016, at 5:19 PM, Geir Magnusson Jr. <g...@pobox.com> wrote:
Hi,
I’m a complete newbie to this area, so please forgive the lack of proper
terminology in advance.
I need to be able to transform arbitrary JS and thought that getting and
transforming the AST would be a good way to do it. I was looking at things
like the Shape library and it felt … lacking, somehow.
I figure nashorn is going to be better :)
Is there any way (I’m ok if it isn’t portable) to use the JDK internals to do
this?
Thanks in advance.
geir
