added support for line by line profiling

M2/Macaulay2/d/profiler.dd

@@ -64,8 +64,21 @@ measure(c:Code):Expr := (
 -- so that everytime evalraw recursively calls eval, this one runs.
 export evalprof(c:Code):Expr := (
     -- stdIO << tostring(codePosition(c)) << " " << tostring(c) << endl;
-    stackpush(codePosition(c));
-    stackpop(measure(c)));
+    when c
+    is f:functionCode do (
+	stackpush(codePosition(c));
+	stackpop(measure(c)))
+    is v:semiCode do (
+	i := 0;
+	w := v.w;
+	r := nullE;
+	n := length(w);
+	while i < n do (
+	    stackpush(codePosition(c));
+	    r = stackpop(measure(w.i));
+	    i = when r is Error do n else i+1);
+	r)
+    else evalraw(c));
 evalprofpointer = evalprof;
 
 -- briefly enables the profiler and evaluates the code that follows,