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|
#!perl
BEGIN {
chdir 't';
@INC = '../lib';
require './test.pl';
*bar::is = *is;
*bar::like = *like;
}
no warnings 'deprecated';
plan 134;
# -------------------- Errors with feature disabled -------------------- #
eval "#line 8 foo\nmy sub foo";
is $@, qq 'Experimental "my" subs not enabled at foo line 8.\n',
'my sub unexperimental error';
eval "#line 8 foo\nCORE::state sub foo";
is $@, qq 'Experimental "state" subs not enabled at foo line 8.\n',
'state sub unexperimental error';
eval "#line 8 foo\nour sub foo";
is $@, qq 'Experimental "our" subs not enabled at foo line 8.\n',
'our sub unexperimental error';
# -------------------- our -------------------- #
no warnings "experimental::lexical_subs";
use feature 'lexical_subs';
{
our sub foo { 42 }
is foo, 42, 'calling our sub from same package';
is &foo, 42, 'calling our sub from same package (amper)';
is do foo(), 42, 'calling our sub from same package (do)';
package bar;
sub bar::foo { 43 }
is foo, 42, 'calling our sub from another package';
is &foo, 42, 'calling our sub from another package (amper)';
is do foo(), 42, 'calling our sub from another package (do)';
}
package bar;
is foo, 43, 'our sub falling out of scope';
is &foo, 43, 'our sub falling out of scope (called via amper)';
is do foo(), 43, 'our sub falling out of scope (called via amper)';
package main;
{
sub bar::a { 43 }
our sub a {
if (shift) {
package bar;
is a, 43, 'our sub invisible inside itself';
is &a, 43, 'our sub invisible inside itself (called via amper)';
is do a(), 43, 'our sub invisible inside itself (called via do)';
}
42
}
a(1);
sub bar::b { 43 }
our sub b;
our sub b {
if (shift) {
package bar;
is b, 42, 'our sub visible inside itself after decl';
is &b, 42, 'our sub visible inside itself after decl (amper)';
is do b(), 42, 'our sub visible inside itself after decl (do)';
}
42
}
b(1)
}
sub c { 42 }
sub bar::c { 43 }
{
our sub c;
package bar;
is c, 42, 'our sub foo; makes lex alias for existing sub';
is &c, 42, 'our sub foo; makes lex alias for existing sub (amper)';
is do c(), 42, 'our sub foo; makes lex alias for existing sub (do)';
}
{
our sub d;
sub bar::d { 'd43' }
package bar;
sub d { 'd42' }
is eval ::d, 'd42', 'our sub foo; applies to subsequent sub foo {}';
}
{
our sub e ($);
is prototype "::e", '$', 'our sub with proto';
}
{
our sub if() { 42 }
my $x = if if if;
is $x, 42, 'lexical subs (even our) override all keywords';
package bar;
my $y = if if if;
is $y, 42, 'our subs from other packages override all keywords';
}
# -------------------- state -------------------- #
use feature 'state'; # state
{
state sub foo { 44 }
isnt \&::foo, \&foo, 'state sub is not stored in the package';
is eval foo, 44, 'calling state sub from same package';
is eval &foo, 44, 'calling state sub from same package (amper)';
is eval do foo(), 44, 'calling state sub from same package (do)';
package bar;
is eval foo, 44, 'calling state sub from another package';
is eval &foo, 44, 'calling state sub from another package (amper)';
is eval do foo(), 44, 'calling state sub from another package (do)';
}
package bar;
is foo, 43, 'state sub falling out of scope';
is &foo, 43, 'state sub falling out of scope (called via amper)';
is do foo(), 43, 'state sub falling out of scope (called via amper)';
{
sub sa { 43 }
state sub sa {
if (shift) {
is sa, 43, 'state sub invisible inside itself';
is &sa, 43, 'state sub invisible inside itself (called via amper)';
is do sa(), 43, 'state sub invisible inside itself (called via do)';
}
44
}
sa(1);
sub sb { 43 }
state sub sb;
state sub sb {
if (shift) {
# ‘state sub foo{}’ creates a new pad entry, not reusing the forward
# declaration. Being invisible inside itself, it sees the stub.
eval{sb};
like $@, qr/^Undefined subroutine &sb called at /,
'state sub foo {} after forward declaration';
eval{&sb};
like $@, qr/^Undefined subroutine &sb called at /,
'state sub foo {} after forward declaration (amper)';
eval{do sb()};
like $@, qr/^Undefined subroutine &sb called at /,
'state sub foo {} after forward declaration (do)';
}
44
}
sb(1);
sub sb2 { 43 }
state sub sb2;
sub sb2 {
if (shift) {
package bar;
is sb2, 44, 'state sub visible inside itself after decl';
is &sb2, 44, 'state sub visible inside itself after decl (amper)';
is do sb2(), 44, 'state sub visible inside itself after decl (do)';
}
44
}
sb2(1);
state sub sb3;
{
state sub sb3 { # new pad entry
# The sub containing this comment is invisible inside itself.
# So this one here will assign to the outer pad entry:
sub sb3 { 47 }
}
}
is eval{sb3}, 47,
'sub foo{} applying to "state sub foo;" even inside state sub foo{}';
# Same test again, but inside an anonymous sub
sub {
state sub sb4;
{
state sub sb4 {
sub sb4 { 47 }
}
}
is sb4, 47,
'sub foo{} applying to "state sub foo;" even inside state sub foo{}';
}->();
}
sub sc { 43 }
{
state sub sc;
eval{sc};
like $@, qr/^Undefined subroutine &sc called at /,
'state sub foo; makes no lex alias for existing sub';
eval{&sc};
like $@, qr/^Undefined subroutine &sc called at /,
'state sub foo; makes no lex alias for existing sub (amper)';
eval{do sc()};
like $@, qr/^Undefined subroutine &sc called at /,
'state sub foo; makes no lex alias for existing sub (do)';
}
package main;
{
state sub se ($);
is prototype eval{\&se}, '$', 'state sub with proto';
is prototype "se", undef, 'prototype "..." ignores state subs';
}
{
state sub if() { 44 }
my $x = if if if;
is $x, 44, 'state subs override all keywords';
package bar;
my $y = if if if;
is $y, 44, 'state subs from other packages override all keywords';
}
{
use warnings; no warnings "experimental::lexical_subs";
state $w ;
local $SIG{__WARN__} = sub { $w .= shift };
eval '#line 87 squidges
state sub foo;
state sub foo {};
';
is $w,
'"state" subroutine &foo masks earlier declaration in same scope at '
. "squidges line 88.\n",
'warning for state sub masking earlier declaration';
}
# Since state vars inside anonymous subs are cloned at the same time as the
# anonymous subs containing them, the same should happen for state subs.
sub make_closure {
my $x = shift;
sub {
state sub foo { $x }
foo
}
}
$sub1 = make_closure 48;
$sub2 = make_closure 49;
is &$sub1, 48, 'state sub in closure (1)';
is &$sub2, 49, 'state sub in closure (2)';
# But we need to test that state subs actually do persist from one invoca-
# tion of a named sub to another (i.e., that they are not my subs).
{
use warnings; no warnings "experimental::lexical_subs";
state $w;
local $SIG{__WARN__} = sub { $w .= shift };
eval '#line 65 teetet
sub foom {
my $x = shift;
state sub poom { $x }
eval{\&poom}
}
';
is $w, "Variable \"\$x\" will not stay shared at teetet line 67.\n",
'state subs get "Variable will not stay shared" messages';
my $poom = foom(27);
my $poom2 = foom(678);
is eval{$poom->()}, eval {$poom2->()},
'state subs close over the first outer my var, like pkg subs';
my $x = 43;
for $x (765) {
state sub etetetet { $x }
is eval{etetetet}, 43, 'state sub ignores for() localisation';
}
}
# And we also need to test that multiple state subs can close over each
# other’s entries in the parent subs pad, and that cv_clone is not con-
# fused by that.
sub make_anon_with_state_sub{
sub {
state sub s1;
state sub s2 { \&s1 }
sub s1 { \&s2 }
if (@_) { return \&s1 }
is s1,\&s2, 'state sub in anon closure closing over sibling state sub';
is s2,\&s1, 'state sub in anon closure closing over sibling state sub';
}
}
{
my $s = make_anon_with_state_sub;
&$s;
# And make sure the state subs were actually cloned.
isnt make_anon_with_state_sub->(0), &$s(0),
'state subs in anon subs are cloned';
is &$s(0), &$s(0), 'but only when the anon sub is cloned';
}
{
state sub BEGIN { exit };
pass 'state subs are never special blocks';
state sub END { shift }
is eval{END('jkqeudth')}, jkqeudth,
'state sub END {shift} implies @_, not @ARGV';
}
{
state sub redef {}
use warnings; no warnings "experimental::lexical_subs";
state $w;
local $SIG{__WARN__} = sub { $w .= shift };
eval "#line 56 pygpyf\nsub redef {}";
is $w, "Subroutine redef redefined at pygpyf line 56.\n",
"sub redefinition warnings from state subs";
}
{
state sub p (\@) {
is ref $_[0], 'ARRAY', 'state sub with proto';
}
p(my @a);
p my @b;
state sub q () { 45 }
is q(), 45, 'state constant called with parens';
}
{
state sub x;
eval 'sub x {3}';
is x, 3, 'state sub defined inside eval';
sub r {
state sub foo { 3 };
if (@_) { # outer call
r();
is foo(), 42,
'state sub run-time redefinition applies to all recursion levels';
}
else { # inner call
eval 'sub foo { 42 }';
}
}
r(1);
}
$::TODO = ' ';
like runperl(
switches => [ '-Mfeature=:all' ],
prog => 'state sub a { foo ref } a()',
stderr => 1
),
qr/syntax error/,
'referencing a state sub after a syntax error does not crash';
undef $::TODO;
# -------------------- my -------------------- #
{
my sub foo { 44 }
isnt \&::foo, \&foo, 'my sub is not stored in the package';
is foo, 44, 'calling my sub from same package';
is &foo, 44, 'calling my sub from same package (amper)';
is do foo(), 44, 'calling my sub from same package (do)';
package bar;
is foo, 44, 'calling my sub from another package';
is &foo, 44, 'calling my sub from another package (amper)';
is do foo(), 44, 'calling my sub from another package (do)';
}
package bar;
is foo, 43, 'my sub falling out of scope';
is &foo, 43, 'my sub falling out of scope (called via amper)';
is do foo(), 43, 'my sub falling out of scope (called via amper)';
{
sub ma { 43 }
my sub ma {
if (shift) {
is ma, 43, 'my sub invisible inside itself';
is &ma, 43, 'my sub invisible inside itself (called via amper)';
is do ma(), 43, 'my sub invisible inside itself (called via do)';
}
44
}
ma(1);
sub mb { 43 }
my sub mb;
my sub mb {
if (shift) {
# ‘my sub foo{}’ creates a new pad entry, not reusing the forward
# declaration. Being invisible inside itself, it sees the stub.
eval{mb};
like $@, qr/^Undefined subroutine &mb called at /,
'my sub foo {} after forward declaration';
eval{&mb};
like $@, qr/^Undefined subroutine &mb called at /,
'my sub foo {} after forward declaration (amper)';
eval{do mb()};
like $@, qr/^Undefined subroutine &mb called at /,
'my sub foo {} after forward declaration (do)';
}
44
}
mb(1);
sub mb2 { 43 }
my sub sb2;
sub mb2 {
if (shift) {
package bar;
is mb2, 44, 'my sub visible inside itself after decl';
is &mb2, 44, 'my sub visible inside itself after decl (amper)';
is do mb2(), 44, 'my sub visible inside itself after decl (do)';
}
44
}
mb2(1);
my sub mb3;
{
my sub mb3 { # new pad entry
# The sub containing this comment is invisible inside itself.
# So this one here will assign to the outer pad entry:
sub mb3 { 47 }
}
}
is eval{mb3}, 47,
'sub foo{} applying to "my sub foo;" even inside my sub foo{}';
# Same test again, but inside an anonymous sub
sub {
my sub mb4;
{
my sub mb4 {
sub mb4 { 47 }
}
}
is mb4, 47,
'sub foo{} applying to "my sub foo;" even inside my sub foo{}';
}->();
}
sub mc { 43 }
{
my sub mc;
eval{mc};
like $@, qr/^Undefined subroutine &mc called at /,
'my sub foo; makes no lex alias for existing sub';
eval{&mc};
like $@, qr/^Undefined subroutine &mc called at /,
'my sub foo; makes no lex alias for existing sub (amper)';
eval{do mc()};
like $@, qr/^Undefined subroutine &mc called at /,
'my sub foo; makes no lex alias for existing sub (do)';
}
package main;
{
my sub me ($);
is prototype eval{\&me}, '$', 'my sub with proto';
is prototype "me", undef, 'prototype "..." ignores my subs';
}
{
my sub if() { 44 }
my $x = if if if;
is $x, 44, 'my subs override all keywords';
package bar;
my $y = if if if;
is $y, 44, 'my subs from other packages override all keywords';
}
{
use warnings; no warnings "experimental::lexical_subs";
my $w ;
local $SIG{__WARN__} = sub { $w .= shift };
eval '#line 87 squidges
my sub foo;
my sub foo {};
';
is $w,
'"my" subroutine &foo masks earlier declaration in same scope at '
. "squidges line 88.\n",
'warning for my sub masking earlier declaration';
}
# Test that my subs are cloned inside anonymous subs.
sub mmake_closure {
my $x = shift;
sub {
my sub foo { $x }
foo
}
}
$sub1 = mmake_closure 48;
$sub2 = mmake_closure 49;
is &$sub1, 48, 'my sub in closure (1)';
is &$sub2, 49, 'my sub in closure (2)';
# Test that they are cloned in named subs.
{
use warnings; no warnings "experimental::lexical_subs";
my $w;
local $SIG{__WARN__} = sub { $w .= shift };
eval '#line 65 teetet
sub mfoom {
my $x = shift;
my sub poom { $x }
\&poom
}
';
is $w, undef, 'my subs get no "Variable will not stay shared" messages';
my $poom = mfoom(27);
my $poom2 = mfoom(678);
is $poom->(), 27, 'my subs closing over outer my var (1)';
is $poom2->(), 678, 'my subs closing over outer my var (2)';
my $x = 43;
my sub aoeu;
for $x (765) {
my sub etetetet { $x }
sub aoeu { $x }
is etetetet, 765, 'my sub respects for() localisation';
is aoeu, 43, 'unless it is declared outside the for loop';
}
}
# And we also need to test that multiple my subs can close over each
# other’s entries in the parent subs pad, and that cv_clone is not con-
# fused by that.
sub make_anon_with_my_sub{
sub {
my sub s1;
my sub s2 { \&s1 }
sub s1 { \&s2 }
if (@_) { return eval { \&s1 } }
is eval{s1},eval{\&s2}, 'my sub in anon closure closing over sibling my sub';
is eval{s2},eval{\&s1}, 'my sub in anon closure closing over sibling my sub';
}
}
# Test my subs inside predeclared my subs
{
my sub s2;
sub s2 {
my $x = 3;
my sub s3 { eval '$x' }
s3;
}
is s2, 3, 'my sub inside predeclared my sub';
}
{
my $s = make_anon_with_my_sub;
&$s;
# And make sure the my subs were actually cloned.
isnt make_anon_with_my_sub->(0), &$s(0),
'my subs in anon subs are cloned';
isnt &$s(0), &$s(0), 'at each invocation of the enclosing sub';
}
{
my sub BEGIN { exit };
pass 'my subs are never special blocks';
my sub END { shift }
is END('jkqeudth'), jkqeudth,
'my sub END {shift} implies @_, not @ARGV';
}
{
my sub redef {}
use warnings; no warnings "experimental::lexical_subs";
my $w;
local $SIG{__WARN__} = sub { $w .= shift };
eval "#line 56 pygpyf\nsub redef {}";
is $w, "Subroutine redef redefined at pygpyf line 56.\n",
"sub redefinition warnings from my subs";
undef $w;
sub {
my sub x {};
sub { eval "#line 87 khaki\n\\&x" }
}->()();
is $w, "Subroutine \"&x\" is not available at khaki line 87.\n",
"unavailability warning during compilation of eval in closure";
undef $w;
no warnings 'void';
eval <<'->()();';
#line 87 khaki
sub {
my sub x{}
sub not_lexical8 {
\&x
}
}
->()();
is $w, "Subroutine \"&x\" is not available at khaki line 90.\n",
"unavailability warning during compilation of named sub in anon";
undef $w;
sub not_lexical9 {
my sub x {};
format =
@
&x
.
}
eval { write };
my($f,$l) = (__FILE__,__LINE__ - 1);
is $w, "Subroutine \"&x\" is not available at $f line $l.\n",
'unavailability warning during cloning';
$l -= 3;
is $@, "Undefined subroutine &x called at $f line $l.\n",
'Vivified sub is correctly named';
}
sub not_lexical10 {
my sub foo;
foo();
sub not_lexical11 {
my sub bar {
my $x = 'khaki car keys for the khaki car';
not_lexical10();
sub foo {
is $x, 'khaki car keys for the khaki car',
'mysubs in inner clonables use the running clone of their CvOUTSIDE'
}
}
bar()
}
}
not_lexical11();
{
my sub p (\@) {
is ref $_[0], 'ARRAY', 'my sub with proto';
}
p(my @a);
p @a;
my sub q () { 46 }
is q(), 46, 'my constant called with parens';
}
{
my sub x;
my $count;
sub x { x() if $count++ < 10 }
x();
is $count, 11, 'my recursive subs';
}
{
my sub x;
eval 'sub x {3}';
is x, 3, 'my sub defined inside eval';
}
{
state $w;
local $SIG{__WARN__} = sub { $w .= shift };
eval q{ my sub george () { 2 } };
is $w, undef, 'no double free from constant my subs';
}
$::TODO = ' ';
like runperl(
switches => [ '-Mfeature=:all' ],
prog => 'my sub a { foo ref } a()',
stderr => 1
),
qr/syntax error/,
'referencing a my sub after a syntax error does not crash';
undef $::TODO;
# -------------------- Interactions (and misc tests) -------------------- #
is sub {
my sub s1;
my sub s2 { 3 };
sub s1 { state sub foo { \&s2 } foo }
s1
}->()(), 3, 'state sub inside my sub closing over my sub uncle';
{
my sub s2 { 3 };
sub not_lexical { state sub foo { \&s2 } foo }
is not_lexical->(), 3, 'state subs that reference my sub from outside';
}
# Test my subs inside predeclared package subs
# This test also checks that CvOUTSIDE pointers are not mangled when the
# inner sub’s CvOUTSIDE points to another sub.
sub not_lexical2;
sub not_lexical2 {
my $x = 23;
my sub bar;
sub not_lexical3 {
not_lexical2();
sub bar { $x }
};
bar
}
is not_lexical3, 23, 'my subs inside predeclared package subs';
# Test my subs inside predeclared package sub, where the lexical sub is
# declared outside the package sub.
# This checks that CvOUTSIDE pointers are fixed up even when the sub is
# not declared inside the sub that its CvOUTSIDE points to.
sub not_lexical5 {
my sub foo;
sub not_lexical4;
sub not_lexical4 {
my $x = 234;
not_lexical5();
sub foo { $x }
}
foo
}
is not_lexical4, 234,
'my sub defined in predeclared pkg sub but declared outside';
undef *not_lexical6;
{
my sub foo;
sub not_lexical6 { sub foo { } }
pass 'no crash when cloning a mysub declared inside an undef pack sub';
}
undef ¬_lexical7;
eval 'sub not_lexical7 { my @x }';
{
my sub foo;
foo();
sub not_lexical7 {
state $x;
sub foo {
is ref \$x, 'SCALAR',
"redeffing a mysub's outside does not make it use the wrong pad"
}
}
}
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