Vertical alignment in nested layouts

[eugenschindler]

From mps-plaintextgen created by nkoester: DSLFoundry/mps-plaintextgen#26

I face the issue of not being able to specify the vertical alignment of text within nested layouts.

A simple example of this would be any generator that uses e.g.

[> $LOOP$[> [> $COPY_SRC$element <] $IF$, <] <]

as a generator structure in order to separate nested lines with a comma.

However, if nested lines themselves have multiple lines as a result, this construct fails. The plaintextgen will always put the comma on the same (first) line.

Example:

This is where I'd like to generate it to:

I suggest adding something like a vertical alignment to make these kind of constructs possible.

[eugenschindler]

Sorry, the last one slipped through the cracks. Could you make an MPS project example? That would help more with understanding the issue.

[eugenschindler]

Maybe take a look at the json language [1]. The above screenshots where taken from it and there is not much more to it than what is shown there.

[1] ttps://github.com/nkoester/mps-json

[eugenschindler]

Any thoughts or updates on this?

[eugenschindler]

Maybe you can have a look at the plaintextflow language (which is also in the plaintextgen plugin and has some extra constructs to handle nesting and newlines). Would that solve your issue?