swiftlang / swiftlang/swift-java

jextract must handle "sibling" types while extracting

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Swift
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Description

For example file 1:

struct Hello {}

file 2:

struct HelloAgain {
  init(hello: Hello) {}
}

if we visit them in the order Hello, then HelloAgain things work fine.

If we happen to visit them HelloAgain first, then we'll reject importing the HelloAgain type because:

[info][JExtractSwift/Swift2JavaVisitor.swift:219](visit(_:)) Unable to import initializer due to unknown(IdentifierTypeSyntax
╰─name: identifier("Hello"))

Contributor guide

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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

Start at Swift2JavaVisitor.swift:219 and inspect how type references are resolved during visitation. Reproduce the examples with Hello visited before and after HelloAgain; done means both visitation orders successfully import HelloAgain and its initializer parameter.

Written by the indexing model from the issue text.

Assessment

Tech stack
swift
Domain
tooling
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
45/100

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