6 set_up_inc( '../lib' );
10 use Errno qw(ENOENT EISDIR);
13 my $result = do{ ++$called; 'value';};
14 is($called, 1, 'do block called');
15 is($result, 'value', 'do block returns correct value');
19 my $file16 = tempfile();
20 if (open my $do, '>', $file16) {
21 print $do "isnt(wantarray, undef, 'do in scalar context');\n";
22 print $do "cmp_ok(wantarray, '==', 0, 'do in scalar context');\n";
23 close $do or die "Could not close: $!";
26 my $a = do $file16; die $@ if $@;
28 my $file17 = tempfile();
29 if (open my $do, '>', $file17) {
30 print $do "isnt(wantarray, undef, 'do in list context');\n";
31 print $do "cmp_ok(wantarray, '!=', 0, 'do in list context');\n";
32 close $do or die "Could not close: $!";
35 my @a = do $file17; die $@ if $@;
37 my $file18 = tempfile();
38 if (open my $do, '>', $file18) {
39 print $do "is(wantarray, undef, 'do in void context');\n";
40 close $do or die "Could not close: $!";
43 do $file18; die $@ if $@;
45 # bug ID 20010920.007 (#7713)
46 eval qq{ do qq(a file that does not exist); };
47 is($@, '', "do on a non-existing file, first try");
49 eval qq{ do uc qq(a file that does not exist); };
50 is($@, '', "do on a non-existing file, second try");
52 # 6 must be interpreted as a file name here
56 is($do6, undef, 'do 6 must be interpreted as a filename');
57 isnt($!, 0, 'and should set $!');
62 no warnings 'uninitialized';
63 push @t, ($u = (do {} . "This should be pushed."));
65 is($#t, 0, "empty do result value" );
68 my $owww = do { 1 if $zok };
69 is($owww, '', 'last is unless');
70 $owww = do { 2 unless not $zok };
71 is($owww, 1, 'last is if not');
74 $owww = do { 3 unless $zok };
75 is($owww, 'swish', 'last is unless');
76 $owww = do { 4 if not $zok };
77 is($owww, '', 'last is if not');
81 my $x = sub { do { return do { @a } }; 2 }->();
82 is($x, 1, 'return do { } receives caller scalar context');
83 my @x = sub { do { return do { @a } }; 2 }->();
84 is("@x", "7", 'return do { } receives caller list context');
87 $x = sub { do { return do { 1; @a } }; 3 }->();
88 is($x, 2, 'return do { ; } receives caller scalar context');
89 @x = sub { do { return do { 1; @a } }; 3 }->();
90 is("@x", "7 8", 'return do { ; } receives caller list context');
93 $x = sub { do { return do { 1; @a, @b } }; 3 }->();
94 is($x, 5, 'return do { ; , } receives caller scalar context');
95 @x = sub { do { return do { 1; @a, @b } }; 3 }->();
96 is("@x", "7 8 11 12 13 14 15", 'return do { ; , } receives caller list context');
98 $x = sub { do { return do { 1; @a }, do { 2; @b } }; 3 }->();
99 is($x, 5, 'return do { ; }, do { ; } receives caller scalar context');
100 @x = sub { do { return do { 1; @a }, do { 2; @b } }; 3 }->();
101 is("@x", "7 8 11 12 13 14 15", 'return do { ; }, do { ; } receives caller list context');
104 $x = sub { do { do { 1; return @a } }; 4 }->();
105 is($x, 3, 'do { return } receives caller scalar context');
106 @x = sub { do { do { 1; return @a } }; 4 }->();
107 is("@x", "7 8 9", 'do { return } receives caller list context');
110 $x = sub { do { return do { 1; do { 2; @a } } }; 5 }->();
111 is($x, 4, 'return do { do { ; } } receives caller scalar context');
112 @x = sub { do { return do { 1; do { 2; @a } } }; 5 }->();
113 is("@x", "7 8 9 10", 'return do { do { ; } } receives caller list context');
115 # More tests about context propagation below return()
119 my $test_code = sub {
122 return $y ? do { my $z; @a } : do { my $z; @b };
126 (do { my$z; @b }) x $y
132 $x = $test_code->(1, 1);
133 is($x, 2, 'return $y ? do { } : do { } - scalar context 1');
134 $x = $test_code->(1, 0);
135 is($x, 3, 'return $y ? do { } : do { } - scalar context 2');
136 @x = $test_code->(1, 1);
137 is("@x", '11 12', 'return $y ? do { } : do { } - list context 1');
138 @x = $test_code->(1, 0);
139 is("@x", '21 22 23', 'return $y ? do { } : do { } - list context 2');
141 $x = $test_code->(0, 0);
142 is($x, "", 'return (do { }, (do { }) x ...) - scalar context 1');
143 $x = $test_code->(0, 1);
144 is($x, 3, 'return (do { }, (do { }) x ...) - scalar context 2');
145 @x = $test_code->(0, 0);
146 is("@x", '11 12', 'return (do { }, (do { }) x ...) - list context 1');
147 @x = $test_code->(0, 1);
148 is("@x", '11 12 21 22 23', 'return (do { }, (do { }) x ...) - list context 2');
162 (wantarray ? reverse(@a) : '99');
169 $x = $test_code->(1, 0);
170 is($x, 2, 'return do { if () { } elsif () { } else { } } - scalar 1');
171 $x = $test_code->(1, 1);
172 is($x, 3, 'return do { if () { } elsif () { } else { } } - scalar 2');
173 $x = $test_code->(1, 2);
174 is($x, 99, 'return do { if () { } elsif () { } else { } } - scalar 3');
175 @x = $test_code->(1, 0);
176 is("@x", '11 12', 'return do { if () { } elsif () { } else { } } - list 1');
177 @x = $test_code->(1, 1);
178 is("@x", '21 22 23', 'return do { if () { } elsif () { } else { } } - list 2');
179 @x = $test_code->(1, 2);
180 is("@x", '12 11', 'return do { if () { } elsif () { } else { } } - list 3');
182 # Do blocks created by constant folding
184 $x = sub { if (1) { 20 } }->();
185 is($x, 20, 'if (1) { $x } receives caller scalar context');
188 $x = sub { if (1) { @a } }->();
189 is($x, 3, 'if (1) { @a } receives caller scalar context');
190 @x = sub { if (1) { @a } }->();
191 is("@x", "21 22 23", 'if (1) { @a } receives caller list context');
193 $x = sub { if (1) { 0; 20 } }->();
194 is($x, 20, 'if (1) { ...; $x } receives caller scalar context');
197 $x = sub { if (1) { 0; @a } }->();
198 is($x, 4, 'if (1) { ...; @a } receives caller scalar context');
199 @x = sub { if (1) { 0; @a } }->();
200 is("@x", "24 25 26 27", 'if (1) { ...; @a } receives caller list context');
202 $x = sub { if (1) { 0; 20 } else{} }->();
203 is($x, 20, 'if (1) { ...; $x } else{} receives caller scalar context');
206 $x = sub { if (1) { 0; @a } else{} }->();
207 is($x, 4, 'if (1) { ...; @a } else{} receives caller scalar context');
208 @x = sub { if (1) { 0; @a } else{} }->();
209 is("@x", "24 25 26 27", 'if (1) { ...; @a } else{} receives caller list context');
211 $x = sub { if (0){} else { 0; 20 } }->();
212 is($x, 20, 'if (0){} else { ...; $x } receives caller scalar context');
215 $x = sub { if (0){} else { 0; @a } }->();
216 is($x, 4, 'if (0){} else { ...; @a } receives caller scalar context');
217 @x = sub { if (0){} else { 0; @a } }->();
218 is("@x", "24 25 26 27", 'if (0){} else { ...; @a } receives caller list context');
220 # [rt.cpan.org #72767] do "string" should not propagate warning hints
222 skip_if_miniperl("no in-memory files under miniperl", 1);
225 # Based on Eval::WithLexicals::_eval_do
227 if ($_[1] eq '/eval_do') {
228 open my $fh, '<', \$code;
237 local $SIG{__WARN__} = sub { warn shift; ++$w };
238 do '/eval_do' or die $@;
239 is($w, undef, 'do STRING does not propagate warning hints');
242 # RT#113730 - $@ should be cleared on IO error.
244 $@ = "should not see";
246 my $rv = do("some nonexistent file");
247 my $saved_error = $@;
248 my $saved_errno = $!;
249 ok(!$rv, "do returns false on io errror");
250 ok(!$saved_error, "\$\@ not set on io error");
251 ok($saved_errno == ENOENT, "\$! is ENOENT for nonexistent file");
254 # do subname should not be do "subname"
257 sub fungi { $called .= "fungible" }
258 $@ = "scrimptious scrobblings";
260 is $called, "fungible", "do-file does not force bareword";
261 isnt $@, "scrimptious scrobblings", "It was interpreted as do-file";
264 # do CORE () has always been do-file
267 sub CORE { $called .= "fungible" }
268 $@ = "scromptious scrimblings";
270 is $called, "fungible", "do CORE() calls &CORE";
271 isnt $@, "scromptious scrimblings", "It was interpreted as do-file";
274 # do subname() and $subname() are no longer allowed
276 sub subname { fail('do subname('. ($_[0] || '') .') called') };
277 my $subref = sub { fail('do $subref('. ($_[0] || '') .') called') };
278 foreach my $mode (qw(subname("arg") subname() $subref("arg") $subref())) {
280 like $@, qr/\Asyntax error/, "do $mode is syntax error";
285 # follow-up to [perl #91844]: a do should always return a copy,
293 isnt($_[0], $$r, "result of delete(helem) is copied: practical test");
294 }->(do { 1; delete $foo{bar} });
297 # A do block should FREETMPS on exit
304 sub f { ::is($d, 1, "RT 124248"); }
305 f(do { 1; !!(my $x = bless []); });
309 # do file $!s must be correct
311 local @INC = ('.'); #want EISDIR not ENOENT
312 my $rv = do 'op'; # /t/op dir
313 my $saved_error = $@;
314 my $saved_errno = $!+0;
315 ok(!$rv, "do dir returns false");
316 ok(!$saved_error, "\$\@ is false on do dir");
317 ok($saved_errno == EISDIR, "\$! is EISDIR on do dir");