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Generators can now be cloned. I'm pretty sure that my current code does not yet cover all the edge cases of cloning the execution context, so there are probably a few bugs in there :)
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Original file line number | Original file line | Diff line number | Diff line change |
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@@ -0,0 +1,32 @@ | |||
--TEST-- | |||
Generators can be cloned | |||
--FILE-- | |||
<?php | |||
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function *firstN($end) { | |||
for ($i = 0; $i < $end; ++$i) { | |||
yield $i; | |||
} | |||
} | |||
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$g1 = firstN(5); | |||
var_dump($g1->current()); | |||
$g1->next(); | |||
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$g2 = clone $g1; | |||
var_dump($g2->current()); | |||
$g2->next(); | |||
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var_dump($g2->current()); | |||
var_dump($g1->current()); | |||
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$g1->next(); | |||
var_dump($g1->current()); | |||
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?> | |||
--EXPECT-- | |||
int(0) | |||
int(1) | |||
int(2) | |||
int(1) | |||
int(2) |
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Original file line number | Original file line | Diff line number | Diff line change |
---|---|---|---|
@@ -0,0 +1,33 @@ | |||
--TEST-- | |||
Cloning a generator with a foreach loop properly adds a ref for the loop var | |||
--FILE-- | |||
<?php | |||
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function *gen() { | |||
foreach ([1, 2, 3] as $i) { | |||
yield $i; | |||
} | |||
} | |||
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$g1 = gen(); | |||
var_dump($g1->current()); | |||
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$g2 = clone $g1; | |||
var_dump($g2->current()); | |||
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$g1->next(); | |||
$g2->next(); | |||
var_dump($g1->current()); | |||
var_dump($g2->current()); | |||
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$g1->close(); | |||
$g2->next(); | |||
var_dump($g2->current()); | |||
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?> | |||
--EXPECT-- | |||
int(1) | |||
int(1) | |||
int(2) | |||
int(2) | |||
int(3) |
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Original file line number | Original file line | Diff line number | Diff line change |
---|---|---|---|
@@ -0,0 +1,18 @@ | |||
--TEST-- | |||
A generator with an active stack can be cloned | |||
--FILE-- | |||
<?php | |||
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function *gen() { | |||
var_dump(str_repeat("x", yield)); | |||
} | |||
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$g1 = gen(); | |||
$g1->rewind(); | |||
$g2 = clone $g1; | |||
$g1->close(); | |||
$g2->send(10); | |||
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?> | |||
--EXPECT-- | |||
string(10) "xxxxxxxxxx" |
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Original file line number | Original file line | Diff line number | Diff line change |
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@@ -0,0 +1,27 @@ | |||
--TEST-- | |||
A generator using a symbol table can be cloned | |||
--FILE-- | |||
<?php | |||
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function *gen() { | |||
// force compiled variable for $foo | |||
$foo = 'foo'; | |||
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// force symbol table | |||
extract(['foo' => 'bar']); | |||
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// interrupt | |||
yield; | |||
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var_dump($foo); | |||
} | |||
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$g1 = gen(); | |||
$g1->rewind(); | |||
$g2 = clone $g1; | |||
$g1->close(); | |||
$g2->next(); | |||
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?> | |||
--EXPECT-- | |||
string(3) "bar" |
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