scala/scala3

Scala 3 ScriptEngine not supporting bindings or attributes

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#14,262 opened on Jan 12, 2022

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 (1 comment) (1 reaction) (0 assignees)Scala (1,159 forks)batch import
area:replhelp wanteditype:enhancement

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Description

This hello world example works fine in Scala 2: https://github.com/invesdwin/invesdwin-context/tree/master/invesdwin-context-parent/invesdwin-context-scala/src/test/java/de/invesdwin/context/scala/tests/hello Which internally uses this wrapper for the ScriptEngine: https://github.com/invesdwin/invesdwin-context/blob/master/invesdwin-context-parent/invesdwin-context-scala/src/main/java/de/invesdwin/context/scala/pool/WrappedScalaScriptEngine.java

But it seems to fail in Scala3 because its ScriptEngine does not use the bindings or context attributes: https://github.com/lampepfl/dotty/blob/8e1054e9fcc91cba8fc3910051377b4a019b9589/compiler/src/dotty/tools/repl/ScriptEngine.scala

Contributor guide

Research direction
Compare the ScriptEngine implementations in Scala 2 and Scala 3 to identify why bindings and context attributes are not supported in Scala 3. Focus on the WrappedScalaScriptEngine and the dotty.tools.repl.ScriptEngine classes. Check how the Scala 2 engine uses the script context and bindings, and see if the Scala 3 engine is missing key methods like setBindings or getBindings. Look for any discussions or commits related to JSR 223 support in the dotty repository.
Tech stack
scalajava
Domain
backendapi
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Needs investigation
Prerequisites
ScalaJava
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
30