RosettaCodeData/Task/Stack-traces/Groovy/stack-traces-4.groovy

23 lines
835 B
Groovy

#<p>
# Compute the current stack trace. Starting at level <i>n</i> above
# the current procedure. Here, <i>n</i> defaults to 0, which will
# include this procedure in the stack trace.
# <i>ce</i> defaults to &current.
# <i>This only works with newer versions of Unicon!</i>
# <[generates the stacktrace from current call back to first
# in the co-expression]>
#</p>
procedure buildStackTrace(n:0, # starting distance from this call
ce # co-expr to trace stack in [&current]
)
local L
/ce := &current
L := []; n -:= 1
while pName := image(proc(ce, n+:=1)) do {
fName := keyword("&file",ce,n) | "no file name"
fLine := keyword("&line",ce,n) | "no line number"
put(L, pName||" ["||fName||":"||fLine||"]" )
}
return L
end