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1 | #!./perl |
2 | |
3 | BEGIN { |
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4 | if ($ENV{PERL_CORE}){ |
5 | chdir('t') if -d 't'; |
6 | @INC = ('.', '../lib'); |
7 | } else { |
8 | unshift @INC, 't'; |
9 | } |
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10 | require Config; |
11 | if (($Config::Config{'extensions'} !~ /\bB\b/) ){ |
12 | print "1..0 # Skip -- Perl configured without B module\n"; |
13 | exit 0; |
14 | } |
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15 | } |
16 | |
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17 | use Test::More tests => 16; |
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18 | |
19 | use_ok( 'B::Terse' ); |
20 | |
21 | # indent should return a string indented four spaces times the argument |
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22 | is( B::Terse::indent(2), ' ' x 8, 'indent with an argument' ); |
23 | is( B::Terse::indent(), '', 'indent with no argument' ); |
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24 | |
25 | # this should fail without a reference |
26 | eval { B::Terse::terse('scalar') }; |
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27 | like( $@, qr/not a reference/, 'terse() fed bad parameters' ); |
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28 | |
29 | # now point it at a sub and see what happens |
30 | sub foo {} |
31 | |
32 | my $sub; |
33 | eval{ $sub = B::Terse::compile('', 'foo') }; |
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34 | is( $@, '', 'compile()' ); |
35 | ok( defined &$sub, 'valid subref back from compile()' ); |
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36 | |
37 | # and point it at a real sub and hope the returned ops look alright |
38 | my $out = tie *STDOUT, 'TieOut'; |
39 | $sub = B::Terse::compile('', 'bar'); |
40 | $sub->(); |
41 | |
42 | # now build some regexes that should match the dumped ops |
43 | my ($hex, $op) = ('\(0x[a-f0-9]+\)', '\s+\w+'); |
44 | my %ops = map { $_ => qr/$_ $hex$op/ } |
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45 | qw ( OP COP LOOP PMOP UNOP BINOP LOGOP LISTOP PVOP ); |
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46 | |
47 | # split up the output lines into individual ops (terse is, well, terse!) |
48 | # use an array here so $_ is modifiable |
49 | my @lines = split(/\n+/, $out->read); |
50 | foreach (@lines) { |
51 | next unless /\S/; |
52 | s/^\s+//; |
53 | if (/^([A-Z]+)\s+/) { |
54 | my $op = $1; |
55 | next unless exists $ops{$op}; |
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56 | like( $_, $ops{$op}, "$op " ); |
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57 | s/$ops{$op}//; |
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58 | delete $ops{$op}; |
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59 | redo if $_; |
60 | } |
61 | } |
62 | |
63 | warn "# didn't find " . join(' ', keys %ops) if keys %ops; |
64 | |
65 | # XXX: |
66 | # this tries to get at all tersified optypes in B::Terse |
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67 | # if you can think of a way to produce AV, NULL, PADOP, or SPECIAL, |
68 | # add it to the regex above too. (PADOPs are currently only produced |
69 | # under ithreads, though). |
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70 | # |
71 | use vars qw( $a $b ); |
72 | sub bar { |
73 | # OP SVOP COP IV here or in sub definition |
74 | my @bar = (1, 2, 3); |
75 | |
76 | # got a GV here |
77 | my $foo = $a + $b; |
78 | |
79 | # NV here |
80 | $a = 1.234; |
81 | |
82 | # this is awful, but it gives a PMOP |
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83 | our @ary = split('', $foo); |
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84 | |
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85 | # PVOP, LOOP |
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86 | LOOP: for (1 .. 10) { |
87 | last LOOP if $_ % 2; |
88 | } |
89 | |
90 | # make a PV |
91 | $foo = "a string"; |
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92 | |
93 | # make an OP_SUBSTCONT |
94 | $foo =~ s/(a)/$1/; |
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95 | } |
96 | |
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97 | # Schwern's example of finding an RV |
98 | my $path = join " ", map { qq["-I$_"] } @INC; |
99 | $path = '-I::lib -MMac::err=unix' if $^O eq 'MacOS'; |
100 | my $redir = $^O eq 'MacOS' ? '' : "2>&1"; |
101 | my $items = qx{$^X $path "-MO=Terse" -le "print \\42" $redir}; |
102 | like( $items, qr/RV $hex \\42/, 'RV' ); |
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103 | |
104 | package TieOut; |
105 | |
106 | sub TIEHANDLE { |
107 | bless( \(my $out), $_[0] ); |
108 | } |
109 | |
110 | sub PRINT { |
111 | my $self = shift; |
112 | $$self .= join('', @_); |
113 | } |
114 | |
115 | sub PRINTF { |
116 | my $self = shift; |
117 | $$self .= sprintf(@_); |
118 | } |
119 | |
120 | sub read { |
121 | my $self = shift; |
122 | return substr($$self, 0, length($$self), ''); |
123 | } |