distrib/lib/perl5db.pl

318 expression.
389 Previous values of watch expressions. First set when the expression is
390 entered; reset whenever the watch expression changes.
526 expression but not show it unless it matters).
863 #   + Fixed warnings generated by "p 42" (Print expression)
2256 =head4 C<x> - evaluate and print an expression
2258 Hands the expression off to C<DB::eval>, setting it up to print the value
2831 =head4 C<W> - watch-expression processing.
2896                             # expression would be better, so the user could
3133 Builds a C<print EXPR> expression in the C<$cmd>; this will get executed at
3141                 # p - print the given expression.
3326 Anything left in C<$cmd> at this point is a Perl expression that we want to
3779     # Should be a line number followed by an expression.
3783         # If we have an expression ...
3805           "Adding an action requires an optional lineno and an expression\n"
4989 =head3 C<cmd_w> - add a watch expression (command)
4991 The 5.8 version of this command adds a watch expression if one is specified;
4994 We extract the expression, save it, evaluate it in the user's context, and
5004     # Null expression if no arguments.
5007     # If expression is not null ...
5012         # Parameterize DB::eval and call it to get the expression's value
5019         # Save the current value of the expression.
5029           "Adding a watch-expression requires an expression\n";    # hint
5035 This command accepts either a watch expression to be removed from the list
5038 If C<*> is specified, we simply empty the watch expression list and the
5039 watch expression value list. We also turn off the bit that says we've got
5042 If an expression (or partial expression) is specified, we pattern-match
5069         # For each expression ...
5091 "Deleting a watch-expression requires an expression, or '*' for all\n"
5619 This routine mostly just packages up a regular expression to be used
5624 speeds things up by only creating the qr//'ed expression once; if it's
6775 		expression matching the full file name:
6810 B<w> I<expr>		Add a global watch-expression.
6812 B<W> I<expr>		Delete a global watch-expression.
6817 B<x> I<expr>		Evals expression in list context, dumps the result.
6818 B<m> I<expr>		Evals expression in list context, prints methods callable
6925   B<h> [I<db_cmd>]  Get help on command         B<w> I<expr>      Add a watch expression
6931   B<p> I<expr>         Print expression (uses script's current package).
6961 		expression matching the full file name:
6994 B<W> I<expr>		Add a global watch-expression.
6999 B<x> I<expr>		Evals expression in list context, dumps the result.
7000 B<m> I<expr>		Evals expression in list context, prints methods callable
7099   B<=> [I<a> I<val>]   Define/list an alias        B<W> I<expr>      Add a watch expression
7105   B<p> I<expr>         Print expression (uses script's current package).
8411 C<W E<lt>exprE<gt>> adds a watch expression, C<W> deletes them all.
8427     # Add a watch expression.
8432         # Get the current value of the expression.