viperproject / viperproject/silver

"Folding" expressions

Open
#243 3 comments 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

enhancement major
Dominant language
Scala
Stars
100
Forks
53
Avg merge
8h 10m
Merged PRs (30d)
2

Description

Created by @fpoli on 2018-08-15 15:29
Last updated on 2018-08-15 15:35

Why there is no folding ... in ... expression?

  • It's the dual of unfolding, which exists;
  • With folding it would be always possible to massage an old state to obtain the wanted predicates, which may be handy for Viper frontends;
  • Syntax highlighting shows it as a keyword.

Contributor guide

No contributing guide indexed for this repository

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

No implementation files or tests are named. Start by locating the existing unfolding expression and the syntax-highlighting keyword, then determine the intended syntax and semantics for a dual folding ... in ... expression. Done should include an agreed design and corresponding language support.

Written by the indexing model from the issue text.

Assessment

Domain
compilers
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.