Jeo unroll Goal is Extremely Slow

[volodya-lombrozo]

According with this benchmark, the unroll goal takes around 100 sec which is rather slow:

Input: com/sun/jna/Pointer.class
Size of .class: 22Kb (22Kb bytes)
Size of .xmir after disassemble: 1Mb (1Mb bytes, 27883 lines)
Size of .phi: 2Mb (2Mb bytes, 42165 lines)
Size of .xmir after unphi: 6Mb (6Mb bytes, 156806 lines)
Optimization time: 3min (207525 ms)

jeo-maven-plugin:unroll-phi   107.458
eo-maven-plugin:xmir-to-phi   81.540
eo-maven-plugin:phi-to-xmir   11.599
jeo-maven-plugin:disassemble  2.025
exec-maven-plugin:exec        0.985
jeo-maven-plugin:assemble     0.634

It's worth optimizing it.

[volodya-lombrozo]

Files that are involved in unroll goal: https://github.com/objectionary/jeo-maven-plugin/tree/master/src/main/resources/org/eolang/parser

[volodya-lombrozo]

@maxonfjvipon Could you help here, please?

[yegor256]

@volodya-lombrozo there are a few XSL files that are copy-pasted from eo-parser module. Maybe you can make this module a dependency and use these files from the module? This will help, since we already optimized the performance of them in the EO project, for example add-refs.xsl (here).

[volodya-lombrozo]

@yegor256 Could you try the new 0.6.16 version please? It should speed up unroll goal a bit.

[volodya-lombrozo]

Unroll goal depends on eo transformations mostly. All the performance problems arise from ineffective xslt transformations. When they will be optimised, we can continue with this issue.
You can track the progress here: objectionary/eo#3490