1: package Apache::run;
2:
3: sub evaluateold {
4: my ($expression,$safeeval,$decls) = @_;
5: # print "inside2 evaluate $decls with $expression<br>\n";
6: # gerd's old method interpolates unset vars
7: # $safeeval->reval('return qq('.$expression.');');
8: unless (defined $expression) { return ''; }
9: my $result = '';
10: $@='';
11: $safeeval->reval('$_=q|'.$expression.'|;');
12: if ($@ eq '') {
13: $safeeval->reval('{'.$decls.'$_=~s/(\$[A-Za-z]\w*)/(defined(eval($1))?eval($1):$1)/ge;}');
14: if ($@ eq '') {
15: $result = $safeeval->reval('return $_;');
16: } else {
17: &Apache::lonxml::error("substitution on:$expression:with:$decls:caused");
18: }
19: } else {
20: &Apache::lonxml::error("defining:$expression:caused");
21: }
22: if ($@ ne '') {&Apache::lonxml::error($@);}
23: return $result
24: }
25:
26: sub evaluate {
27: my ($expression,$safeeval,$decls) = @_;
28: unless (defined $expression) { return ''; }
29: my $result = '';
30: $@='';
31: $safeeval->reval('{'.$decls.';&evaluate(q|'.$expression.'|);}');
32: if ($@ eq '') {
33: $result = $safeeval->reval('return $_;');
34: } else {
35: &Apache::lonxml::error("substitution on:$expression:with:$decls:caused $@");
36: }
37: return $result
38: }
39:
40: sub run {
41: my ($code,$safeeval) = @_;
42: # print "inside run\n";
43: $@='';
44: my $result=$safeeval->reval($code);
45: if ($@ ne '') {
46: &Apache::lonxml::error(":$code:caused");
47: &Apache::lonxml::error($@);
48: }
49: return $result;
50: }
51:
52: 1;
53: __END__;
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