trace each call with a srcref attribute

Source: R/trace_calls.R

This function calls itself recursively so it can properly traverse the AST.

trace_calls(x, parent_functions = NULL, parent_ref = NULL)

Arguments

x

the call
parent_functions

the functions which this call is a child of.
parent_ref

argument used to set the srcref of the current call when recursing

Value

a modified expression with count calls inserted before each previous call.

See also

http://adv-r.had.co.nz/Expressions.html