inspect {RUnit} | R Documentation |
Track the executed code lines of a function or method.
Description
inspect
examines and modifies the source code of a function or
method. After the modification of the source code, the modified function
will be executed and the result of the tracking process will be
stored. To store the information a tracker
environment with the
name track must exist.
Note, that not all R code constructs can be handled at the current
state. In some cases it is not possible to track a specific code line.
Therefore, clearly structured code with consequent use of
opening and closing braces to indicate conditional expressions can
prevent these parser problems.
Usage
inspect(expr, track = track)
Arguments
expr |
Any R function or method call. |
track |
list object, as returned by a call to |
Details
The return value of inspect
is the result returned by
the function executed. If the function has no return value nothing is
returned either.
Author(s)
Thomas König, Klaus Jünemann & Matthias Burger
See Also
tracker
for the call tracking object, and
printHTML
for displaying results.
Examples
## example function
foo <- function(x){
y <- 0
for(i in 1:100)
{
y <- y + i
}
return(y)
}
## the name track is necessary
track <- tracker()
## initialize the tracker
track$init()
## inspect the function
## res will collect the result of calling foo
res <- inspect(foo(10), track = track)
## get the tracked function call info
resTrack <- track$getTrackInfo()
## create HTML sites
printHTML(resTrack, baseDir=tempdir())