Split a pipeline expression into a list of expressions

split_pipeline takes an expression of a pipeline and splits it into a list of unevaluated calls.

split_pipeline(pipeline, ...)

Arguments

pipeline	A pipeline. Can be an unquoted or quoted expression, or a character vector of code. If missing, uses the text highlighted in RStudio's source editor.
...	Only used to allow assignment with = at the beginning of a pipeline.

Value

A list of unevaluated calls extracted from the pipeline.

Details

split_pipeline does not split nested pipelines.

See also

The unexported magrittr:::split_chain, does not handle assignment, but collects the particular pipes used. burst_pipes invisibly returns a restructured split pipeline.

Examples

# \donttest{
library(magrittr)

split_pipeline(
    quote(x <- 1:5 %>% rev %>% {. * 2} %>% sample(replace = TRUE))
)
#> [[1]]
#> x <- 1:5
#> 
#> [[2]]
#> rev
#> 
#> [[3]]
#> {
#>     . * 2
#> }
#> 
#> [[4]]
#> sample(replace = TRUE)
#> 
# }