On Wed, 25 Oct 2000, Frank Krahmer wrote:
>
> After calling a Jacl script I get an exception and examine this by
> catch (Exception e)
> {
> e.printStackTrace();
> }
>
> The result on stdout stream is :
>
> tcl.lang.TclException: syntax error in expression "([info level] == 1) &&
> ([info script] == "") \
> && [info exists tcl_interactive] && $tcl_interactive"
> at tcl.lang.Expression.SyntaxError(Expression.java:258)
> at tcl.lang.Expression.ExprGetValue(Expression.java:550)
> at tcl.lang.Expression.ExprGetValue(Expression.java:581)
> at tcl.lang.Expression.ExprTopLevel(Expression.java:236)
> at tcl.lang.Expression.evalBoolean(Expression.java:151)
> at tcl.lang.IfCmd.cmdProc(IfCmd.java:46)
> at tcl.lang.Parser.evalObjv(Parser.java:810)
> at tcl.lang.Parser.eval2(Parser.java:1209)
> at tcl.lang.Procedure.cmdProc(Procedure.java:161)
> at tcl.lang.Parser.evalObjv(Parser.java:810)
> at tcl.lang.Parser.evalObjv(Parser.java:796)
> at tcl.lang.Parser.eval2(Parser.java:1209)
> at tcl.lang.Procedure.cmdProc(Procedure.java:161)
> at tcl.lang.Parser.evalObjv(Parser.java:810)
> at tcl.lang.Parser.eval2(Parser.java:1209)
> at tcl.lang.Interp.eval(Interp.java:2042)
> at TMFSimulator.Jacl.JaclMgr.executeJaclProc(JaclMgr.java:431)
> at
> TMFSimulator.Jacl.JaclMgr.initializeJaclTestNetwork(JaclMgr.java:473)
> at TMFSimulator.Jacl.JaclMgr.initialize(JaclMgr.java:178)
> at
> TMFSimulator.TMFSimulatorServer.initializeJaclMgr(TMFSimulatorServer.java:443)
> at
> TMFSimulator.TMFSimulatorServer.initialize(TMFSimulatorServer.java:258)
> at TMFSimulator.TMFSimulatorServer.main(TMFSimulatorServer.java:185)
>
> How can I get the location (file, linenumber) where the syntaxerror occurred ?
>
> Regards
In the general case, there is no way to know. Tcl only knows
about a file when sourcing a file. If you call interp.evalFile("foo"),
it will add "error ... line x in file foo". If you just call
a proc then there is no way to know where the proc came from.
% proc p { args } {
expr {1 == "}
}
% p d
missing "
% set errorInfo
missing "
while compiling
"expr {1 == "}"
(compiling body of proc "p", line 2)
invoked from within
"p d"
%
It can tell you what line of the proc something went wrong
on, but that is about it. In C code, you can compile in
things like the file a function is in, because a given
function can't be defined more than once. Tcl (and any
scripting language for that matter) is dynamic, so
you can't really find this sort of thing out.
Mo DeJong
Red Hat Inc
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