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ActiveTcl User Guide |
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Tcl_AllowExceptions - allow all exceptions in next script
evaluation
#include <tcl.h>
Tcl_AllowExceptions(interp)
- Tcl_Interp *interp
(in)
- Interpreter in which script will be evaluated.
If a script is evaluated at top-level (i.e. no other scripts are
pending evaluation when the script is invoked), and if the script
terminates with a completion code other than TCL_OK,
TCL_ERROR or TCL_RETURN, then Tcl normally converts
this into a TCL_ERROR return with an appropriate message.
The particular script evaluation procedures of Tcl that act in the
manner are Tcl_EvalObjEx,
Tcl_EvalObjv, Tcl_Eval, Tcl_EvalEx, Tcl_GlobalEval, Tcl_GlobalEvalObj, Tcl_VarEval and Tcl_VarEvalVA.
However, if Tcl_AllowExceptions is invoked immediately
before calling one of those a procedures, then arbitrary completion
codes are permitted from the script, and they are returned without
modification. This is useful in cases where the caller can deal
with exceptions such as TCL_BREAK or TCL_CONTINUE in
a meaningful way.
continue, break, exception, interpreter
Copyright © 1995-1997 Roger E. Critchlow Jr.
Copyright © 1989-1993 The Regents of the University of
California. Copyright © 1994-1996 Sun Microsystems, Inc.