/**
* Visit an element.
*
* @access public
* @param \Hoa\Visitor\Element $element Element to visit.
* @param mixed &$handle Handle (reference).
* @param mixed $eldnah Handle (not reference).
*
* @return \Hoa\Ruler\Model
*
* @throw \Hoa\Ruler\Exception\Interpreter
*/
public function visit(Visitor\Element $element, &$handle = null, $eldnah = null)
{
$id = $element->getId();
$variable = false !== $eldnah;
switch ($id) {
case '#expression':
$this->root = new Ruler\Model();
$this->root->expression = $element->getChild(0)->accept($this, $handle, $eldnah);
return $this->root;
case '#operation':
$children = $element->getChildren();
$left = $children[0]->accept($this, $handle, $eldnah);
$right = $children[2]->accept($this, $handle, $eldnah);
$name = $children[1]->accept($this, $handle, false);
return $this->root->_operator($name, [$left, $right], false);
case '#variable_access':
$children = $element->getChildren();
$name = $children[0]->accept($this, $handle, $eldnah);
array_shift($children);
foreach ($children as $child) {
$_child = $child->accept($this, $handle, $eldnah);
switch ($child->getId()) {
case '#attribute_access':
$name->attribute($_child);
break;
}
}
return $name;
case '#attribute_access':
return $element->getChild(0)->accept($this, $handle, false);
case '#array_declaration':
$out = [];
foreach ($element->getChildren() as $child) {
$out[] = $child->accept($this, $handle, $eldnah);
}
return $out;
case '#function_call':
$children = $element->getChildren();
$name = $children[0]->accept($this, $handle, false);
array_shift($children);
$arguments = [];
foreach ($children as $child) {
$arguments[] = $child->accept($this, $handle, $eldnah);
}
return $this->root->_operator($name, $arguments, true);
case '#and':
case '#or':
case '#xor':
$name = substr($id, 1);
$children = $element->getChildren();
$left = $children[0]->accept($this, $handle, $eldnah);
$right = $children[1]->accept($this, $handle, $eldnah);
return $this->root->operation($name, array($left, $right));
case '#not':
return $this->root->operation('not', array($element->getChild(0)->accept($this, $handle, $eldnah)));
case 'token':
$token = $element->getValueToken();
$value = $element->getValueValue();
switch ($token) {
case 'identifier':
return true === $variable ? $this->root->variable($value) : $value;
case 'named_parameter':
return new Parameter(substr($value, 1));
case 'positional_parameter':
$index = $this->nextParameterIndex++;
return new Parameter($index);
case 'true':
return true;
case 'false':
return false;
case 'null':
return null;
case 'float':
return floatval($value);
case 'integer':
return intval($value);
case 'string':
return str_replace('\\' . $value[0], $value[0], substr($value, 1, -1));
default:
throw new Ruler\Exception\Interpreter('Token %s is unknown.', 0, $token);
}
default:
throw new Ruler\Exception\Interpreter('Element %s is unknown.', 1, $id);
}
}
/**
* Visit an element.
*
* @param \Hoa\Visitor\Element $element Element to visit.
* @param mixed &$handle Handle (reference).
* @param mixed $eldnah Handle (not reference).
* @return mixed
* @throws \Hoa\Regex\Exception
*/
public function visit(Visitor\Element $element, &$handle = null, $eldnah = null)
{
switch ($element->getId()) {
case '#expression':
case '#capturing':
case '#noncapturing':
case '#namedcapturing':
return $element->getChild(0)->accept($this, $handle, $eldnah);
case '#alternation':
case '#class':
return $element->getChild($this->_sampler->getInteger(0, $element->getChildrenNumber() - 1))->accept($this, $handle, $eldnah);
case '#concatenation':
$out = null;
foreach ($element->getChildren() as $child) {
$out .= $child->accept($this, $handle, $eldnah);
}
return $out;
case '#quantification':
$out = null;
$xy = $element->getChild(1)->getValueValue();
$x = 0;
$y = 0;
switch ($element->getChild(1)->getValueToken()) {
case 'zero_or_one':
$y = 1;
break;
case 'zero_or_more':
$y = mt_rand(5, 8);
// why not?
break;
case 'one_or_more':
$x = 1;
$y = mt_rand(5, 8);
// why not?
break;
case 'exactly_n':
$x = $y = (int) substr($xy, 1, -1);
break;
case 'n_to_m':
$xy = explode(',', substr($xy, 1, -1));
$x = (int) trim($xy[0]);
$y = (int) trim($xy[1]);
break;
case 'n_or_more':
$xy = explode(',', substr($xy, 1, -1));
$x = (int) trim($xy[0]);
$y = mt_rand($x + 5, $x + 8);
// why not?
break;
}
for ($i = 0, $max = $this->_sampler->getInteger($x, $y); $i < $max; ++$i) {
$out .= $element->getChild(0)->accept($this, $handle, $eldnah);
}
return $out;
case '#negativeclass':
$c = [];
foreach ($element->getChildren() as $child) {
$c[Ustring::toCode($child->accept($this, $handle, $eldnah))] = true;
}
do {
// all printable ASCII.
$i = $this->_sampler->getInteger(32, 126);
} while (isset($c[$i]));
return Ustring::fromCode($i);
case '#range':
$out = null;
$left = $element->getChild(0)->accept($this, $handle, $eldnah);
$right = $element->getChild(1)->accept($this, $handle, $eldnah);
return Ustring::fromCode($this->_sampler->getInteger(Ustring::toCode($left), Ustring::toCode($right)));
case 'token':
$value = $element->getValueValue();
switch ($element->getValueToken()) {
case 'character':
$value = ltrim($value, '\\');
switch ($value) {
case 'a':
return "\\a";
case 'e':
return "";
case 'f':
return "\f";
case 'n':
return "\n";
case 'r':
return "\r";
case 't':
return "\t";
default:
return Ustring::fromCode(intval(substr($value, 1)));
}
break;
case 'dynamic_character':
$value = ltrim($value, '\\');
switch ($value[0]) {
case 'x':
$value = trim($value, 'x{}');
return Ustring::fromCode(hexdec($value));
default:
return Ustring::fromCode(octdec($value));
}
break;
case 'character_type':
$value = ltrim($value, '\\');
if ('s' === $value) {
$value = $this->_sampler->getInteger(0, 1) ? 'h' : 'v';
}
switch ($value) {
case 'C':
return $this->_sampler->getInteger(0, 127);
case 'd':
return $this->_sampler->getInteger(0, 9);
case 'h':
$h = [Ustring::fromCode(0x9), Ustring::fromCode(0x20), Ustring::fromCode(0xa0)];
return $h[$this->_sampler->getInteger(0, count($h) - 1)];
case 'v':
$v = [Ustring::fromCode(0xa), Ustring::fromCode(0xb), Ustring::fromCode(0xc), Ustring::fromCode(0xd)];
return $v[$this->_sampler->getInteger(0, count($v) - 1)];
case 'w':
$w = array_merge(range(0x41, 0x5a), range(0x61, 0x7a), [0x5f]);
return Ustring::fromCode($w[$this->_sampler->getInteger(0, count($w) - 1)]);
default:
return '?';
}
break;
case 'literal':
if ('.' === $value) {
$w = array_merge(range(0x41, 0x5a), range(0x61, 0x7a), [0x5f]);
return Ustring::fromCode($w[$this->_sampler->getInteger(0, count($w) - 1)]);
}
return str_replace('\\\\', '\\', preg_replace('#\\\\(?!\\\\)#', '', $value));
}
break;
case '#internal_options':
break;
default:
throw new Regex\Exception('Unsupported node: %s.', 0, $element->getId());
}
return;
}
/**
* Visit an element.
*
* @param \Hoa\Visitor\Element $element Element to visit.
* @param mixed &$handle Handle (reference).
* @param mixed $eldnah Handle (not reference).
* @return mixed
* @throws \Hoa\Praspel\Exception\Interpreter
*/
public function visit(Visitor\Element $element, &$handle = null, $eldnah = null)
{
$id = $element->getId();
switch ($id) {
case '#specification':
$this->_clause = $this->_current = $this->_root = new Praspel\Model\Specification();
if (null !== ($classname = $this->getBindedClass())) {
$this->_root->bindToClass($classname);
}
foreach ($element->getChildren() as $child) {
$child->accept($this, $handle, $eldnah);
}
return $this->_root;
case '#is':
$this->_clause = $this->_root->getClause('is');
foreach ($element->getChildren() as $child) {
$this->_clause->addProperty($this->_clause->getPropertyValue($child->accept($this, $handle, $eldnah)));
}
break;
case '#requires':
case '#ensures':
case '#invariant':
$this->_clause = $this->_current->getClause(substr($id, 1));
foreach ($element->getChildren() as $child) {
$child->accept($this, $handle, $eldnah);
}
break;
case '#behavior':
$children = $element->getChildren();
$child0 = array_shift($children);
$identifier = $child0->accept($this, $handle, false);
$previous = $this->_current;
$this->_clause = $this->_current = $this->_current->getClause('behavior')->get($identifier);
foreach ($children as $child) {
$child->accept($this, $handle, $eldnah);
}
$this->_current = $previous;
break;
case '#default':
$children = $element->getChildren();
$previous = $this->_current;
$this->_clause = $this->_current = $this->_current->getClause('default');
foreach ($children as $child) {
$child->accept($this, $handle, $eldnah);
}
$this->_current = $previous;
break;
case '#throwable':
$this->_clause = $this->_current->getClause('throwable');
$identifier = null;
foreach ($element->getChildren() as $child) {
switch ($child->getId()) {
case '#exception_identifier':
$_identifier = $child->getChild(1)->accept($this, $handle, false);
$_instanceof = $child->getChild(0)->accept($this, $handle, false);
$this->_clause[$_identifier] = $_instanceof;
if (null === $identifier) {
$identifier = $_identifier;
} else {
$this->_clause[$_identifier]->disjunctionWith($identifier);
}
break;
case '#exception_with':
$old = $this->_clause;
$this->_clause = $old->newWith();
foreach ($child->getChildren() as $_child) {
$_child->accept($this, $handle, $eldnah);
}
$old[$identifier]->setWith($this->_clause);
$this->_clause = $old;
break;
}
}
break;
case '#description':
$this->_clause = $this->_root->getClause('description');
$this->_clause[] = $element->getChild(0)->accept($this, $handle, $eldnah);
break;
case '#declaration':
$left = $element->getChild(0)->accept($this, $handle, false);
$right = $element->getChild(1)->accept($this, $handle, $eldnah);
$variable = $left;
if ($right instanceof Praspel\Model\Variable) {
$right = realdom()->variable($right);
}
$this->_clause[$variable]->in = $right;
break;
case '#local_declaration':
$left = $element->getChild(0)->accept($this, $handle, false);
$right = $element->getChild(1)->accept($this, $handle, $eldnah);
$variable = $left;
if ($right instanceof Praspel\Model\Variable) {
$right = realdom()->variable($right);
}
$this->_clause->let[$variable]->in = $right;
break;
case '#qualification':
$children = $element->getChildren();
$variable = $this->_clause[array_shift($children)->accept($this, $handle, false)];
foreach ($children as $child) {
$variable->is($child->accept($this, $handle, false));
}
break;
case '#contains':
$variable = $element->getChild(0)->accept($this, $handle, false);
$value = $element->getChild(1)->accept($this, $handle, false);
$this->_clause[$variable]->contains($value);
break;
case '#domainof':
$left = $element->getChild(0)->accept($this, $handle, false);
$right = $element->getChild(1)->accept($this, $handle, false);
$this->_clause[$left]->domainof($right);
break;
case '#predicate':
$this->_clause->predicate($element->getChild(0)->accept($this, $handle, $eldnah));
break;
case '#disjunction':
$disjunction = realdom();
foreach ($element->getChildren() as $child) {
$value = $child->accept($this, $handle, $eldnah);
if ($value instanceof Realdom\Disjunction) {
$disjunction[] = $value;
} elseif ($value instanceof Praspel\Model\Variable) {
$disjunction->variable($value);
} else {
$disjunction->const($value);
}
}
return $disjunction;
case '#realdom':
$children = $element->getChildren();
$child0 = array_shift($children);
$name = $child0->accept($this, $handle, false);
$arguments = [];
foreach ($children as $child) {
$argument = $child->accept($this, $handle, $eldnah);
if ($argument instanceof Realdom\Disjunction) {
$realdoms = $argument->getRealdoms();
$argument = $realdoms[0];
}
$arguments[] = $argument;
}
return realdom()->_call($name, $arguments);
case '#concatenation':
$string = null;
foreach ($element->getChildren() as $child) {
$string .= $child->accept($this, $handle, $eldnah);
}
return $string;
case '#array':
$array = [];
foreach ($element->getChildren() as $child) {
if ('#pair' === $child->getId()) {
$key = $child->getChild(0)->accept($this, $handle, $eldnah);
$value = $child->getChild(1)->accept($this, $handle, $eldnah);
$array[] = [$key, $value];
continue;
}
$key = realdom()->natural(0, 1);
$value = $child->accept($this, $handle, $eldnah);
$array[] = [$key, $value];
}
return $array;
case '#range':
$left = $element->getChild(0)->accept($this, $handle, $eldnah);
$right = $element->getChild(1)->accept($this, $handle, $eldnah);
if (is_float($left) || is_float($right)) {
return realdom()->boundfloat(floatval($left), floatval($right));
}
return realdom()->boundinteger(intval($left), intval($right));
case '#left_range':
$left = $element->getChild(0)->accept($this, $handle, $eldnah);
if (is_float($left)) {
return realdom()->boundfloat($left);
}
return realdom()->boundinteger($left);
case '#right_range':
$right = $element->getChild(0)->accept($this, $handle, $eldnah);
if (is_float($right)) {
return realdom()->boundfloat(null, $right);
}
return realdom()->boundinteger(null, $right);
case '#arrayaccessbykey':
$variable = $element->getChild(0)->accept($this, $handle, $eldnah);
$key = $element->getChild(1)->accept($this, $handle, $eldnah);
$this->_clause[$variable]->key($key);
return $variable;
case '#dynamic_resolution':
$value = null;
foreach ($element->getChildren() as $child) {
if (null !== $value) {
$value .= '->';
}
$value .= $child->accept($this, $handle, false);
}
if (false !== $eldnah) {
return $this->_clause->getVariable($value, true);
}
return $value;
case '#self_identifier':
case '#static_identifier':
case '#parent_identifier':
$identifier = substr($id, 1, strpos($id, '_', 1) - 1);
foreach ($element->getChildren() as $child) {
$identifier .= '::' . $child->accept($this, $handle, $eldnah);
}
return $identifier;
case '#old':
$value = '\\old(' . $element->getChild(0)->accept($this, $handle, false) . ')';
if (false !== $eldnah) {
return $this->_clause->getVariable($value);
}
return $value;
case '#result':
return '\\result';
case '#classname':
$classname = [];
foreach ($element->getChildren() as $child) {
$classname[] = $child->accept($this, $handle, $eldnah);
}
return implode('\\', $classname);
case '#nowdoc':
case '#heredoc':
return $element->getChild(1)->accept($this, $handle, $eldnah);
case '#regex':
$regex = $element->getChild(0)->accept($this, $handle, $eldnah);
if (true === $element->childExists(1)) {
$length = $element->getChild(1)->accept($this, $handle, $eldnah);
}
return realdom()->regex($regex);
case '#class':
$classname = $element->getChild(0)->accept($this, $handle, false);
return realdom()->class($classname);
case 'token':
$tId = $element->getValueToken();
$value = $element->getValueValue();
switch ($tId) {
case 'identifier':
if (false !== $eldnah) {
return $this->getIdentifier($value);
}
return $value;
case 'this':
if (false !== $eldnah) {
return $this->_root->getImplicitVariable($value);
}
return $value;
case 'content':
case 'pure':
case 'result':
return $value;
case 'default':
return …;
case 'null':
return null;
case 'true':
return true;
case 'false':
return false;
case 'binary':
$int = intval(substr($value, strpos($value, 'b') + 1), 2);
if ('-' === $value[0]) {
return -$int;
}
return $int;
case 'octal':
$int = intval(substr($value, strpos($value, '0') + 1), 8);
if ('-' === $value[0]) {
return -$int;
}
return $int;
case 'hexa':
$value = strtolower($value);
$int = intval(substr($value, strpos($value, 'x') + 1), 16);
if ('-' === $value[0]) {
return -$int;
}
return $int;
case 'decimal':
if (true === ctype_digit(ltrim($value, '+-'))) {
return intval($value);
}
return floatval($value);
case 'escaped':
switch ($value[1]) {
case 'n':
return "\n";
case 'r':
return "\r";
case 't':
return "\t";
case 'v':
return "\v";
case 'e':
return "";
case 'f':
return "\f";
case 'b':
return "[D";
case 'x':
return Ustring::fromCode(hexdec($value));
case '\\':
return $value[1];
default:
return Ustring::fromCode(octdec($value));
}
case 'accepted':
case 'string':
case 'regex':
return $value;
default:
throw new Praspel\Exception\Interpreter('Token %s is not yet implemented.', 1, $tId);
}
break;
default:
throw new Praspel\Exception\Interpreter('Element %s is unknown.', 2, $id);
}
}