roxygen2::roxygenize() is very slow

[alexgenin]

Hi all,

I recently updated roxygen2, and now roxygenize() takes a real while to run, while it was pretty much instant in the previous version. The slowdown appears to come from warn_missing_s3_exports(), and specifically the the methods %in% s3functions call

roxygen2/R/namespace.R

Line 403 in ace81d3

undocumented <- methods[!methods %in% s3functions]

I have a few datasets that are lists of matrices, which do not get filtered out from s3functions, and make the %in% call very slow.

In the same function, s3blocks is defined but never used. I suppose it was supposed to be reused in the next line.

roxygen2/R/namespace.R

Lines 399 to 400 in ace81d3

	s3blocks <- blocks[map_lgl(blocks, block_has_tags, c("export", "exportS3Method"))]
	s3objects <- map(blocks, function(block) block$object$value)

Changing blocks to s3blocks on line 400 fixes the slowdown on my computer.

Thanks! Hope that helps,

Alex