Anyone else having problems debugging projects that use the

Question

Anyone else having problems debugging projects that use the arrow meta Specifically the line number information gets changed which makes it impossible to properly set breakpoints This can easily be seen in <https github com arrow kt arrow meta examples tree master hello world> After building you can inspect the bytecode using `javap c l use plugin build classes HelloWorldKt class` Looking at the line information you see that it no longer matches the source file

raulraja · Answer

We don t have yet a strategy for mutations in place that alter the line numbers I guess this is also true for any other plugin that for example modifies the IR backend I m not aware of an API that would allow us to do this so any ideas are welcome

raulraja · Answer

If you use `Transform newSources` is like kapt and the line numbers is not an issue since you are just generating code in new files that are processed before analysis

raulraja · Answer

This is a general issue for all compiler plugins not just meta so I m thinking we should ask in < C7L3JB43G|compiler> to see what people are doing in cases to keep debugging sane

Burkhard · Answer

`Transform newSources` doesn t really help me much I m thinking about switching from kapt to arrow meta because I want the ability to modify existing code add functions to existing classes to automatically implement interfaces

raulraja · Answer

For what is worth is something we need to address but we are not sure how to implement this

raulraja · Answer

Our comprehensions plugins that rewrites ```val a by fa val b by fb```

raulraja · Answer

to

raulraja · Answer

```fa flatMap a gt fb flatMap b gt ```

raulraja · Answer

has the same issue

raulraja · Answer

Also you should consider that if you are creating new members in place as the users types in the IDE for those to show up in IDEA you need an IDEA plugin or depend on the Meta IDEA plugin which exposes those members as synthetic descriptor so IDEA knows that the underlying document has more stuff than what is being parsed

raulraja · Answer

This is currently another limitation of in place mutation that I brought up to the compiler team illustrating some of these issues

raulraja · Answer

IDEA never looks for new members generated by compiler plugins

raulraja · Answer

PLugin like `Serialization` are bundled so you can refer to `seralized ` etc But community plugins currently have to go through an awful process of discovery through a Marketplace modal

raulraja · Answer

instead of just loading whatever IDEA plugin a project says to depend upon

Burkhard · Answer

Yeah I m hoping that I can avoid the IDEA plugin since the functions I generate should only ever be called through the parent interface but I m currently just investigating to see if it is even possible to switch to arrow meta Might be a bit early