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Manpage of Tcl_AllowExceptions

Tcl_AllowExceptions

Section: Tcl Library Procedures (3)
Updated: 7.4
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NAME

Tcl_AllowExceptions - allow all exceptions in next script evaluation  

SYNOPSIS

#include <tcl.h>

Tcl_AllowExceptions(interp)
 

ARGUMENTS

Tcl_Interp    *interp    (in)
Interpreter in which script will be evaluated.



 

DESCRIPTION

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_CONTINUE or TCL_RETURN, then Tcl normally converts this into a TCL_ERROR return with an appropriate message.

However, if Tcl_AllowExceptions is invoked immediately before calling a procedure such as Tcl_Eval, 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.

 

KEYWORDS

continue, break, exception, interpreter


 

Index

NAME
SYNOPSIS
ARGUMENTS
DESCRIPTION
KEYWORDS

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Time: 10:34:49 GMT, March 28, 2024