/**
* @param \Generator $generator
* @param string $prefix
*/
public function __construct(\Generator $generator, string $prefix)
{
$yielded = $generator->current();
$prefix .= \sprintf("; %s yielded at key %s", \is_object($yielded) ? \get_class($yielded) : \gettype($yielded), $generator->key());
if (!$generator->valid()) {
parent::__construct($prefix);
return;
}
$reflGen = new \ReflectionGenerator($generator);
$exeGen = $reflGen->getExecutingGenerator();
if ($isSubgenerator = $exeGen !== $generator) {
$reflGen = new \ReflectionGenerator($exeGen);
}
parent::__construct(\sprintf("%s on line %s in %s", $prefix, $reflGen->getExecutingLine(), $reflGen->getExecutingFile()));
}
public static function castReflectionGenerator(\ReflectionGenerator $c, array $a, Stub $stub, $isNested)
{
$prefix = Caster::PREFIX_VIRTUAL;
if ($c->getThis()) {
$a[$prefix . 'this'] = new CutStub($c->getThis());
}
$x = $c->getFunction();
$frame = array('class' => isset($x->class) ? $x->class : null, 'type' => isset($x->class) ? $x->isStatic() ? '::' : '->' : null, 'function' => $x->name, 'file' => $c->getExecutingFile(), 'line' => $c->getExecutingLine());
if ($trace = $c->getTrace(DEBUG_BACKTRACE_IGNORE_ARGS)) {
$x = new \ReflectionGenerator($c->getExecutingGenerator());
array_unshift($trace, array('function' => 'yield', 'file' => $x->getExecutingFile(), 'line' => $x->getExecutingLine() - 1));
$trace[] = $frame;
$a[$prefix . 'trace'] = new TraceStub($trace, false, 0, -1, -1);
} else {
$x = new FrameStub($frame, false, true);
$x = ExceptionCaster::castFrameStub($x, array(), $x, true);
$a[$prefix . 'executing'] = new EnumStub(array($frame['class'] . $frame['type'] . $frame['function'] . '()' => $x[$prefix . 'src']));
}
return $a;
}
/**
* @requires PHP 7.0
*/
public function testGenerator()
{
$g = new GeneratorDemo();
$g = $g->baz();
$r = new \ReflectionGenerator($g);
$xDump = <<<'EODUMP'
Generator {
this: Symfony\Component\VarDumper\Tests\Fixtures\GeneratorDemo { …}
executing: {
Symfony\Component\VarDumper\Tests\Fixtures\GeneratorDemo->baz(): {
%sGeneratorDemo.php:14: """
{\n
yield from bar();\n
}\n
"""
}
}
}
EODUMP;
$this->assertDumpMatchesFormat($xDump, $g);
foreach ($g as $v) {
break;
}
$xDump = <<<'EODUMP'
array:2 [
0 => ReflectionGenerator {
this: Symfony\Component\VarDumper\Tests\Fixtures\GeneratorDemo { …}
trace: {
3. Symfony\Component\VarDumper\Tests\Fixtures\GeneratorDemo::foo() ==> yield(): {
src: {
%sGeneratorDemo.php:9: """
{\n
yield 1;\n
}\n
"""
}
}
2. Symfony\Component\VarDumper\Tests\Fixtures\bar() ==> Symfony\Component\VarDumper\Tests\Fixtures\GeneratorDemo::foo(): {
src: {
%sGeneratorDemo.php:20: """
{\n
yield from GeneratorDemo::foo();\n
}\n
"""
}
}
1. Symfony\Component\VarDumper\Tests\Fixtures\GeneratorDemo->baz() ==> Symfony\Component\VarDumper\Tests\Fixtures\bar(): {
src: {
%sGeneratorDemo.php:14: """
{\n
yield from bar();\n
}\n
"""
}
}
}
}
1 => Generator {
executing: {
Symfony\Component\VarDumper\Tests\Fixtures\GeneratorDemo::foo(): {
%sGeneratorDemo.php:10: """
yield 1;\n
}\n
\n
"""
}
}
}
]
EODUMP;
$this->assertDumpMatchesFormat($xDump, array($r, $r->getExecutingGenerator()));
}
/**
* @requires PHP 7.0
*/
public function testGenerator()
{
if (extension_loaded('xdebug')) {
$this->markTestSkipped('xdebug is active');
}
$g = new GeneratorDemo();
$g = $g->baz();
$r = new \ReflectionGenerator($g);
$xDump = <<<'EODUMP'
Generator {
this: Symfony\Component\VarDumper\Tests\Fixtures\GeneratorDemo { …}
executing: {
Symfony\Component\VarDumper\Tests\Fixtures\GeneratorDemo->baz(): {
%sGeneratorDemo.php:14: {
: {
: yield from bar();
: }
}
}
}
}
EODUMP;
$this->assertDumpMatchesFormat($xDump, $g);
foreach ($g as $v) {
break;
}
$xDump = <<<'EODUMP'
array:2 [
0 => ReflectionGenerator {
this: Symfony\Component\VarDumper\Tests\Fixtures\GeneratorDemo { …}
trace: {
%sGeneratorDemo.php:9: {
: {
: yield 1;
: }
}
%sGeneratorDemo.php:20: {
: {
: yield from GeneratorDemo::foo();
: }
}
%sGeneratorDemo.php:14: {
: {
: yield from bar();
: }
}
}
}
1 => Generator {
executing: {
Symfony\Component\VarDumper\Tests\Fixtures\GeneratorDemo::foo(): {
%sGeneratorDemo.php:10: {
: yield 1;
: }
:
}
}
}
}
]
EODUMP;
$this->assertDumpMatchesFormat($xDump, array($r, $r->getExecutingGenerator()));
}
/**
* @requires PHP 7.0
*/
public function testGenerator()
{
$g = new GeneratorDemo();
$g = $g->baz();
$r = new \ReflectionGenerator($g);
$xDump = <<<'EODUMP'
Generator {
this: Symfony\Component\VarDumper\Tests\Fixtures\GeneratorDemo { …}
executing: {
Symfony\Component\VarDumper\Tests\Fixtures\GeneratorDemo->baz(): {
%sGeneratorDemo.php:14: {
13: {
14: yield from bar();
15: }
}
}
}
}
EODUMP;
$this->assertDumpMatchesFormat($xDump, $g);
foreach ($g as $v) {
break;
}
$xDump = <<<'EODUMP'
array:2 [
0 => ReflectionGenerator {
this: Symfony\Component\VarDumper\Tests\Fixtures\GeneratorDemo { …}
trace: {
%sGeneratorDemo.php:9: {
8: {
9: yield 1;
10: }
}
%sGeneratorDemo.php:20: {
19: {
20: yield from GeneratorDemo::foo();
21: }
}
%sGeneratorDemo.php:14: {
13: {
14: yield from bar();
15: }
}
}
}
1 => Generator {
executing: {
Symfony\Component\VarDumper\Tests\Fixtures\GeneratorDemo::foo(): {
%sGeneratorDemo.php:10: {
9: yield 1;
10: }
11:
}
}
}
}
]
EODUMP;
$this->assertDumpMatchesFormat($xDump, array($r, $r->getExecutingGenerator()));
}
/**
* A general purpose function for creating error messages from generator yields
*
* @param \Generator $generator
* @param string $prefix
* @return string
*/
function makeGeneratorError(\Generator $generator, $prefix = "Generator error")
{
if (PHP_MAJOR_VERSION < 7 || !$generator->valid()) {
return $prefix;
}
$reflGen = new \ReflectionGenerator($generator);
$exeGen = $reflGen->getExecutingGenerator();
if ($isSubgenerator = $exeGen !== $generator) {
$reflGen = new \ReflectionGenerator($exeGen);
}
return sprintf("{$prefix} on line %s in %s", $reflGen->getExecutingLine(), $reflGen->getExecutingFile());
}
