loncom/xml/run.pm - diff

Return to run.pm CVS log

Up to [LON-CAPA] / loncom / xml

version 1.5, 2000/06/29 20:27:44	version 1.7, 2000/10/02 22:20:18
Line 2 package Apache::run;	Line 2 package Apache::run;

sub evaluate {	sub evaluate {
my ($expression,$safeeval,$decls) = @_;	my ($expression,$safeeval,$decls) = @_;
# print "inside2 evaluate with $expression\n";	# print "inside2 evaluate $decls with $expression<br>\n";
# gerd's old method interpolates unset vars	# gerd's old method interpolates unset vars
# $safeeval->reval('return qq('.$expression.');');	# $safeeval->reval('return qq('.$expression.');');
unless (defined $expression) { return ''; }	unless (defined $expression) { return ''; }
	my $result = '';
	$@='';
$safeeval->reval('$_=\''.$expression.'\';');	$safeeval->reval('$_=\''.$expression.'\';');
$safeeval->reval('{'.$decls.'$_=~s/(\$\{?[A-Za-z]\w*\}?)/(defined(eval($1))?eval($1):$1)/ge;}');	if ($@ eq '') {
$safeeval->reval('return $_;');	$safeeval->reval('{'.$decls.'$_=~s/(\$\{?[A-Za-z]\w*\}?)/(defined(eval($1))?eval($1):$1)/ge;}');
	if ($@ eq '') {
	$result = $safeeval->reval('return $_;');
	} else {
	&Apache::lonxml::error("substituion on:$expression:with:$decls:caused");
	}
	} else {
	&Apache::lonxml::error("defining:$expression:caused");
	}
	if ($@ ne '') {&Apache::lonxml::error($@);}
	return $result
}	}

sub run {	sub run {
my ($code,$safeeval) = @_;	my ($code,$safeeval) = @_;
# print "inside run\n";	# print "inside run\n";
$safeeval->reval($code);	$@='';
	my $result=$safeeval->reval($code);
	if ($@ ne '') {
	&Apache::lonxml::error(":$code:caused");
	&Apache::lonxml::error($@);
	}
	return $result;
}	}

1;	1;