/**
* Visit an element.
*
* @param \Hoa\Visitor\Element $element Element to visit.
* @param mixed &$handle Handle (reference).
* @param mixed $eldnah Handle (not reference).
* @return mixed
*/
public function visit(Visitor\Element $element, &$handle = null, $eldnah = null)
{
$out = null;
// Hoa\Praspel.
if ($element instanceof Praspel\Model\Specification) {
$variable = '$' . $element->getId();
$out = $variable . ' = new \\Hoa\\Praspel\\Model\\Specification();' . "\n";
foreach ($element::getAllowedClauses() as $clause) {
if (true === $element->clauseExists($clause)) {
$out .= $element->getClause($clause)->accept($this, $handle, $eldnah);
}
}
} elseif ($element instanceof Praspel\Model\Is) {
$variable = '$' . $element->getParent()->getId();
$out = "\n" . $variable . '->getClause(\'is\')->setProperty(' . $element->getProperty() . ');' . "\n";
} elseif ($element instanceof Praspel\Model\Declaration) {
$variable = '$' . ($eldnah ?: $element->getId());
$out = "\n" . $variable . ' = $' . $element->getParent()->getId() . '->getClause(\'' . $element->getName() . '\');' . "\n";
foreach ($element->getLocalVariables() as $var) {
$out .= $var->accept($this, $handle, $eldnah);
}
foreach ($element->getPredicates() as $predicate) {
$out .= $variable . '->predicate(\'' . $predicate . '\');' . "\n";
}
} elseif ($element instanceof Praspel\Model\Variable) {
$variable = '$' . ($eldnah ?: $element->getClause()->getId());
$name = $element->getName();
$start = $variable . '[\'' . $name . '\']';
if (true === $element->isLocal()) {
$out .= $variable . '->let[\'' . $name . '\']';
} else {
$out .= $start;
}
if (null !== ($alias = $element->getAlias())) {
$out .= '->domainof(\'' . $alias . '\');' . "\n";
} else {
$out .= '->in = ' . $element->getDomains()->accept($this, $handle, $eldnah) . ';' . "\n";
}
$constraints = $element->getConstraints();
if (isset($constraints['is'])) {
$out .= $start . '->is(\'' . implode('\', \'', $constraints['is']) . '\');' . "\n";
}
if (isset($constraints['contains'])) {
foreach ($constraints['contains'] as $contains) {
$out .= $start . '->contains(' . $contains . ');' . "\n";
}
}
if (isset($constraints['key'])) {
foreach ($constraints['key'] as $pairs) {
$out .= $start . '->key(' . $pairs[0] . ')->in = ' . $pairs[1] . ';' . "\n";
}
}
} elseif ($element instanceof Praspel\Model\Throwable) {
$parent = '$' . $element->getParent()->getId();
$_variable = $element->getId();
$variable = '$' . $_variable;
$out = "\n" . $variable . ' = ' . $parent . '->getClause(\'throwable\');' . "\n";
foreach ($element as $identifier) {
$exception = $element[$identifier];
$start = $variable . '[\'' . $identifier . '\']';
$out .= $start . ' = \'' . $exception->getInstanceName() . '\';' . "\n";
if (false === $element->isDisjointed()) {
if (null !== ($with = $element->getWith())) {
$temp = $_variable . '_' . $identifier . '_with';
$out .= '$' . $temp . ' = ' . $variable . '->newWith();' . "\n";
foreach ($with->getLocalVariables() as $var) {
$out .= $var->accept($this, $handle, $temp);
}
foreach ($with->getPredicates() as $predicate) {
$out .= '$' . $temp . '->predicate(\'' . $predicate . '\');' . "\n";
}
$out .= $start . '->setWith($' . $temp . ');' . "\n";
}
} else {
$out .= $start . '->disjunctionWith(\'' . $exception->getDisjunction() . '\');' . "\n";
}
}
} elseif ($element instanceof Praspel\Model\DefaultBehavior) {
$out = "\n" . '$' . $element->getId() . ' = $' . $element->getParent()->getId() . '->getClause(\'default\')' . "\n";
foreach ($element::getAllowedClauses() as $clause) {
if (true === $element->clauseExists($clause)) {
$out .= $element->getClause($clause)->accept($this, $handle, $eldnah);
}
}
} elseif ($element instanceof Praspel\Model\Behavior) {
$out = "\n" . '$' . $element->getId() . ' = $' . $element->getParent()->getId() . '->getClause(\'behavior\')' . '->get(\'' . $element->getIdentifier() . '\');' . "\n";
foreach ($element::getAllowedClauses() as $clause) {
if (true === $element->clauseExists($clause)) {
$out .= $element->getClause($clause)->accept($this, $handle, $eldnah);
}
}
} elseif ($element instanceof Praspel\Model\Description) {
$parent = '$' . $element->getParent()->getId();
$variable = '$' . $element->getId();
$out = "\n" . $variable . ' = ' . $parent . '->getClause(\'description\');' . "\n";
foreach ($element as $example) {
$out .= $variable . '[] = \'' . preg_replace('#(?<!\\\\)\'#', '\\\'', $example) . '\';' . "\n";
}
} elseif ($element instanceof Praspel\Model\Collection) {
foreach ($element as $el) {
$out .= $el->accept($this, $handle, $eldnah);
}
} elseif ($element instanceof Realdom\Disjunction) {
$realdoms = $element->getUnflattenedRealdoms();
if (!empty($realdoms)) {
$oout = [];
foreach ($realdoms as $realdom) {
if ($realdom instanceof Realdom\IRealdom\Constant) {
$oout[] = 'const(' . $realdom->accept($this, $handle, $eldnah) . ')';
} else {
$oout[] = $realdom->accept($this, $handle, $eldnah);
}
}
$out .= 'realdom()->' . implode('->or->', $oout);
}
} elseif ($element instanceof Realdom) {
if ($element instanceof Realdom\IRealdom\Constant) {
if ($element instanceof Realdom\_Array) {
$oout = [];
foreach ($element['pairs'] as $pair) {
$_oout = null;
foreach ($pair as $_pair) {
if (null !== $_oout) {
$_oout .= ', ';
}
$_oout .= $_pair->accept($this, $handle, $eldnah);
}
$oout[] = 'array(' . $_oout . ')';
}
$out .= 'array(' . implode(', ', $oout) . ')';
} else {
$out .= $element->getConstantRepresentation();
}
} else {
$oout = [];
foreach ($element->getArguments() as $argument) {
$oout[] = $argument->accept($this, $handle, $eldnah);
}
$out .= $element->getName() . '(' . implode(', ', $oout) . ')';
}
} elseif ($element instanceof Realdom\Crate\Constant) {
$holder = $element->getHolder();
$praspel = $element->getPraspelRepresentation();
$out .= '$' . $element->getDeclaration()->getId() . '[\'' . $praspel() . '\']';
} elseif ($element instanceof Realdom\Crate\Variable) {
$holder = $element->getVariable();
if ($holder instanceof Praspel\Model\Variable\Implicit) {
$out .= 'variable($' . $holder->getClause()->getId() . '->getImplicitVariable(\'' . $holder->getName() . '\'))';
} else {
$out .= 'variable($' . $holder->getClause()->getId() . '->getVariable(\'' . $holder->getName() . '\', true))';
}
} else {
throw new Praspel\Exception\Compiler('%s is not yet implemented.', 0, get_class($element));
}
return $out;
}
/**
* Visit an element.
*
* @param \Hoa\Visitor\Element $element Element to visit.
* @param mixed &$handle Handle (reference).
* @param mixed $eldnah Handle (not reference).
* @return float
*/
public function visit(Visitor\Element $element, &$handle = null, $eldnah = null)
{
$type = $element->getId();
$children = $element->getChildren();
if (null === $handle) {
$handle = function ($x) {
return $x;
};
}
$acc =& $handle;
switch ($type) {
case '#function':
$name = array_shift($children)->accept($this, $_, $eldnah);
$function = $this->getFunction($name);
$arguments = [];
foreach ($children as $child) {
$child->accept($this, $_, $eldnah);
$arguments[] = $_();
unset($_);
}
$acc = function () use($function, $arguments, $acc) {
return $acc($function->distributeArguments($arguments));
};
break;
case '#negative':
$children[0]->accept($this, $a, $eldnah);
$acc = function () use($a, $acc) {
return $acc(-$a());
};
break;
case '#addition':
$children[0]->accept($this, $a, $eldnah);
$acc = function ($b) use($a, $acc) {
return $acc($a() + $b);
};
$children[1]->accept($this, $acc, $eldnah);
break;
case '#substraction':
$children[0]->accept($this, $a, $eldnah);
$acc = function ($b) use($a, $acc) {
return $acc($a()) - $b;
};
$children[1]->accept($this, $acc, $eldnah);
break;
case '#multiplication':
$children[0]->accept($this, $a, $eldnah);
$acc = function ($b) use($a, $acc) {
return $acc($a() * $b);
};
$children[1]->accept($this, $acc, $eldnah);
break;
case '#division':
$children[0]->accept($this, $a, $eldnah);
$parent = $element->getParent();
if (null === $parent || $type === $parent->getId()) {
$acc = function ($b) use($a, $acc) {
if (0 === $b) {
throw new \RuntimeException('Division by zero is not possible.');
}
return $acc($a()) / $b;
};
} else {
if ('#fakegroup' !== $parent->getId()) {
$classname = get_class($element);
$group = new $classname('#fakegroup', null, [$element], $parent);
$element->setParent($group);
$this->visit($group, $acc, $eldnah);
break;
} else {
$acc = function ($b) use($a, $acc) {
if (0 === $b) {
throw new \RuntimeException('Division by zero is not possible.');
}
return $acc($a() / $b);
};
}
}
$children[1]->accept($this, $acc, $eldnah);
break;
case '#fakegroup':
case '#group':
$children[0]->accept($this, $a, $eldnah);
$acc = function () use($a, $acc) {
return $acc($a());
};
break;
case '#variable':
$out = $this->getVariable($children[0]->getValueValue());
$acc = function () use($out, $acc) {
return $acc($out);
};
break;
case 'token':
$value = $element->getValueValue();
$out = null;
if ('constant' === $element->getValueToken()) {
if (defined($value)) {
$out = constant($value);
} else {
$out = $this->getConstant($value);
}
} elseif ('id' === $element->getValueToken()) {
return $value;
} else {
$out = (double) $value;
}
$acc = function () use($out, $acc) {
return $acc($out);
};
break;
}
if (null === $element->getParent()) {
return $acc();
}
}
/**
* Evaluate given AST as CollectiveAccess expression
*
* @param Visitor\Element $po_element
* @param Hoa\Core\Consistency\Xcallable $f_handle
* @param Hoa\Core\Consistency\Xcallable $f_eldnah
* @return mixed
*/
public function visit(Visitor\Element $po_element, &$f_handle = null, $f_eldnah = null)
{
$vs_type = $po_element->getId();
$va_children = $po_element->getChildren();
// if no handle passed, use identity
if ($f_handle === null) {
$f_handle = function ($x) {
return $x;
};
}
$f_acc =& $f_handle;
switch ($vs_type) {
case '#function':
$vs_name = array_shift($va_children)->accept($this, $_, $f_eldnah);
$f_function = $this->getFunction($vs_name);
$va_args = array();
foreach ($va_children as $o_child) {
$o_child->accept($this, $_, $f_eldnah);
$va_args[] = $_();
unset($_);
}
$f_acc = function () use($f_function, $va_args, $f_acc) {
return $f_acc($f_function->distributeArguments($va_args));
};
break;
case '#bool_and':
$va_children[0]->accept($this, $a, $f_eldnah);
$f_acc = function ($b) use($a, $f_acc) {
return $f_acc($a() && $b);
};
$va_children[1]->accept($this, $f_acc, $f_eldnah);
break;
case '#bool_or':
$va_children[0]->accept($this, $a, $f_eldnah);
$f_acc = function ($b) use($a, $f_acc) {
return $f_acc($a() || $b);
};
$va_children[1]->accept($this, $f_acc, $f_eldnah);
break;
case '#regex_match':
$va_children[0]->accept($this, $a, $f_eldnah);
$f_acc = function ($b) use($a, $f_acc) {
return $f_acc((bool) @preg_match($b, $a()));
};
$va_children[1]->accept($this, $f_acc, $f_eldnah);
break;
case '#regex_nomatch':
$va_children[0]->accept($this, $a, $f_eldnah);
$f_acc = function ($b) use($a, $f_acc) {
return $f_acc(!(bool) @preg_match($b, $a()));
};
$va_children[1]->accept($this, $f_acc, $f_eldnah);
break;
case '#comp_gt':
$va_children[0]->accept($this, $a, $f_eldnah);
$f_acc = function ($b) use($a, $f_acc) {
return $f_acc($a() > $b);
};
$va_children[1]->accept($this, $f_acc, $f_eldnah);
break;
case '#comp_gte':
$va_children[0]->accept($this, $a, $f_eldnah);
$f_acc = function ($b) use($a, $f_acc) {
return $f_acc($a() >= $b);
};
$va_children[1]->accept($this, $f_acc, $f_eldnah);
break;
case '#comp_lt':
$va_children[0]->accept($this, $a, $f_eldnah);
$f_acc = function ($b) use($a, $f_acc) {
return $f_acc($a() < $b);
};
$va_children[1]->accept($this, $f_acc, $f_eldnah);
break;
case '#comp_lte':
$va_children[0]->accept($this, $a, $f_eldnah);
$f_acc = function ($b) use($a, $f_acc) {
return $f_acc($a() <= $b);
};
$va_children[1]->accept($this, $f_acc, $f_eldnah);
break;
case '#comp_neq':
$va_children[0]->accept($this, $a, $f_eldnah);
$f_acc = function ($b) use($a, $f_acc) {
return $f_acc($a() != $b);
};
$va_children[1]->accept($this, $f_acc, $f_eldnah);
break;
case '#comp_eq':
$va_children[0]->accept($this, $a, $f_eldnah);
$f_acc = function ($b) use($a, $f_acc) {
return $f_acc($a() == $b);
};
$va_children[1]->accept($this, $f_acc, $f_eldnah);
break;
case '#in_op':
$vs_needle = array_shift($va_children)->accept($this, $in, $f_eldnah);
$va_haystack = array();
$in = $f_handle;
$o_op = array_shift($va_children);
if ($o_op->getValueToken() !== 'in_op') {
throw new Exception('invalid syntax');
}
foreach ($va_children as $o_child) {
$o_child->accept($this, $in, $f_eldnah);
$va_haystack[] = $in();
unset($in);
}
$f_acc = function () use($vs_needle, $va_haystack, $f_acc) {
return $f_acc(in_array($vs_needle, $va_haystack));
};
break;
case '#notin_op':
$vs_needle = array_shift($va_children)->accept($this, $in, $f_eldnah);
$va_haystack = array();
$in = $f_handle;
$o_op = array_shift($va_children);
if ($o_op->getValueToken() !== 'notin_op') {
throw new Exception('invalid syntax');
}
foreach ($va_children as $o_child) {
$o_child->accept($this, $in, $f_eldnah);
$va_haystack[] = $in();
unset($in);
}
$f_acc = function () use($vs_needle, $va_haystack, $f_acc) {
return $f_acc(!in_array($vs_needle, $va_haystack));
};
break;
case '#stradd':
$va_children[0]->accept($this, $a, $f_eldnah);
$f_acc = function ($b) use($a, $f_acc) {
return $f_acc($a() . $b);
};
$va_children[1]->accept($this, $f_acc, $f_eldnah);
break;
case '#negative':
$va_children[0]->accept($this, $a, $f_eldnah);
$f_acc = function () use($a, $f_acc) {
return $f_acc(-$a());
};
break;
case '#addition':
$va_children[0]->accept($this, $a, $f_eldnah);
$f_acc = function ($b) use($a, $f_acc) {
return $f_acc($a() + $b);
};
$va_children[1]->accept($this, $f_acc, $f_eldnah);
break;
case '#substraction':
$va_children[0]->accept($this, $a, $f_eldnah);
$f_acc = function ($b) use($a, $f_acc) {
return $f_acc($a()) - $b;
};
$va_children[1]->accept($this, $f_acc, $f_eldnah);
break;
case '#multiplication':
$va_children[0]->accept($this, $a, $f_eldnah);
$f_acc = function ($b) use($a, $f_acc) {
return $f_acc($a() * $b);
};
$va_children[1]->accept($this, $f_acc, $f_eldnah);
break;
case '#division':
$va_children[0]->accept($this, $a, $f_eldnah);
$parent = $po_element->getParent();
if (null === $parent || $type === $parent->getId()) {
$f_acc = function ($b) use($a, $f_acc) {
if (0 === $b) {
throw new \RuntimeException('Division by zero is not possible.');
}
return $f_acc($a()) / $b;
};
} else {
if ('#fakegroup' !== $parent->getId()) {
$classname = get_class($po_element);
$group = new $classname('#fakegroup', null, [$po_element], $parent);
$po_element->setParent($group);
$this->visit($group, $f_acc, $f_eldnah);
break;
} else {
$f_acc = function ($b) use($a, $f_acc) {
if (0 === $b) {
throw new \RuntimeException('Division by zero is not possible.');
}
return $f_acc($a() / $b);
};
}
}
$va_children[1]->accept($this, $f_acc, $f_eldnah);
break;
case '#fakegroup':
case '#group':
$va_children[0]->accept($this, $a, $f_eldnah);
$f_acc = function () use($a, $f_acc) {
return $f_acc($a());
};
break;
case 'token':
$value = $po_element->getValueValue();
$token = $po_element->getValueToken();
$out = null;
switch ($token) {
case 'id':
return $value;
case 'string':
$out = preg_replace('/(^"|"$)/', '', $value);
break;
case 'regex':
// @todo maybe mangle regex?
$out = (string) $value;
break;
case 'variable':
$vs_var = mb_substr((string) $value, 1);
// get rid of caret ^
$out = $this->getVariable($vs_var);
if (is_array($out)) {
$out = join("", $out);
}
// we need to join multiple values
break;
default:
$out = (double) $value;
break;
}
$f_acc = function () use($out, $f_acc) {
return $f_acc($out);
};
break;
}
return $f_acc();
}
