I know we used (maybe still do?) Janino in Drools.
But now we've moved to MVEL for more power and control and such.
Might be worth investigating MVEL.
http://mvel.codehaus.org/
-Bob
On Oct 18, 2009, at 3:51 PM, Charles Oliver Nutter wrote:
I've been trying to mentally prepare myself for a reworking of the
current compiler or a JVM backend for the new compiler, and I'm
following up on a recommendation at JVMLS to look at Janino.
http://www.janino.net/
Janino is an "Embedded Java Compiler". It essentially provides what
ASM does but at a higher level; you produce new or manipulate existing
Java ASTs and then it dumps out the bytecode.
The potential here would be to have a backend with less raw bytecode
emission, localized compilation optimizations (i.e. if we emit an
inefficient AST, Janino can in theory improve it), and less disconnect
between either the Ruby AST or the new Ruby IR and the backend.
I have not started looking into it yet, but I was wondering if anyone
had any experience with it. It would be worth looking at if anyone
else is interested in the compiler.
- Charlie
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