softwaremill / softwaremill/macwire

Transitive dependencies

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Dominant language
Scala
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Description

If class A depends on B, which depends on and I have a C, can I instantiate an A without also wiring up a B? In other words, would it be possible for this:

val c: C = ...

val a = wire[A]

to generate this?

val c: C = ...

val _macwire_b = new B(c)
val a = new A(b)

Similarly, if I don't have a C in scope but C has a no-args constructor, can macwire instantiate that as well? That is, this:

val a = wire[A]

would become:

val a = new A(new B(new C))

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Research direction

The issue names no source files or tests. Start by tracing the wire[A] entry point and the A, B, and C examples to understand current dependency resolution. Done means transitive dependencies are generated from in-scope values and no-argument constructors, matching both requested examples.

Written by the indexing model from the issue text.

Assessment

Tech stack
scala
Domain
tooling
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
30/100

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