Commit | Line | Data |
---|---|---|
86530b38 AT |
1 | package Psh::Builtins::If; |
2 | ||
3 | require Psh::Parser; | |
4 | require Psh; | |
5 | require Psh::Util; | |
6 | ||
7 | sub bi_if { | |
8 | my @words=@{$_[1]}; | |
9 | my $success=0; | |
10 | my @result=(0,undef); | |
11 | my @cond; | |
12 | ||
13 | TRY: while (@words>0) { | |
14 | @cond=(); | |
15 | while (@words>0) { | |
16 | last if substr($words[0],0,1) eq '{'; | |
17 | push @cond, shift @words; | |
18 | } | |
19 | unless (@words) { | |
20 | Psh::Util::print_error("Missing action for if\n"); | |
21 | return (0,undef); | |
22 | } | |
23 | my $cond= join(' ',@cond); | |
24 | ($success)= Psh::evl(Psh::Parser::ungroup($cond)); | |
25 | $Psh::Builtins::If::last_success= $success; | |
26 | ||
27 | if ($success) { | |
28 | return Psh::evl(Psh::Parser::ungroup(shift @words)); | |
29 | } else { | |
30 | shift @words; # ignore the if-block | |
31 | my $next= shift @words; | |
32 | next TRY if $next eq 'elsif'; | |
33 | if ($next eq 'else') { | |
34 | return Psh::evl(Psh::Parser::ungroup(shift @words)); | |
35 | } | |
36 | return (0,undef); | |
37 | } | |
38 | } | |
39 | return (1,undef); | |
40 | } | |
41 | ||
42 | 1; |