This function parses an R expression, breaking it down into its components.
Details
If the input expression x is not an atomic value, symbol, or an environment pointer,
the function breaks it up into a list of components. It also handles expressions of the
form foo$bar by splitting them up, keeping only the relevant parts for parsing.
If x is a list of expressions, the function recursively parses each expression until
they can no longer be listed, filtering out atomic values in the process.
If x is not listable (e.g. a function), it is deparsed into a character string.
Examples
if (FALSE) { # \dontrun{
# Parse a simple expression
tmp <- dplyr::across
.parse_function(tmp)
} # }