public function parsePostfixExpression($node)
{
$token = $this->stream->current;
while ($token->type == Token::PUNCTUATION_TYPE) {
if ('.' === $token->value) {
$this->stream->next();
$token = $this->stream->current;
$this->stream->next();
if ($token->type !== Token::NAME_TYPE && $token->type !== Token::NUMBER_TYPE && ($token->type !== Token::OPERATOR_TYPE && preg_match('/[a-zA-Z_\\x7f-\\xff][a-zA-Z0-9_\\x7f-\\xff]*/A', $token->value))) {
throw new SyntaxError('Expected name or number', $token->cursor);
}
$arg = new Node\ConstantNode($token->value);
$arguments = new Node\ArgumentsNode();
if ($this->stream->current->test(Token::PUNCTUATION_TYPE, '(')) {
$type = Node\GetAttrNode::METHOD_CALL;
foreach ($this->parseArguments()->nodes as $n) {
$arguments->addElement($n);
}
} else {
$type = Node\GetAttrNode::PROPERTY_CALL;
}
$node = new Node\GetAttrNode($node, $arg, $arguments, $type);
} elseif ('[' === $token->value) {
if ($node instanceof Node\GetAttrNode && Node\GetAttrNode::METHOD_CALL === $node->attributes['type'] && version_compare(PHP_VERSION, '5.4.0', '<')) {
throw new SyntaxError('Array calls on a method call is only supported on PHP 5.4+', $token->cursor);
}
$this->stream->next();
$arg = $this->parseExpression();
$this->stream->expect(Token::PUNCTUATION_TYPE, ']');
$node = new Node\GetAttrNode($node, $arg, new Node\ArgumentsNode(), Node\GetAttrNode::ARRAY_CALL);
} else {
break;
}
$token = $this->stream->current;
}
return $node;
}
public function parsePostfixExpression($node)
{
$token = $this->stream->current;
while ($token->type == Token::PUNCTUATION_TYPE) {
if ('.' === $token->value) {
$this->stream->next();
$token = $this->stream->current;
$this->stream->next();
if ($token->type !== Token::NAME_TYPE && ($token->type !== Token::OPERATOR_TYPE || !preg_match('/[a-zA-Z_\\x7f-\\xff][a-zA-Z0-9_\\x7f-\\xff]*/A', $token->value))) {
throw new SyntaxError('Expected name', $token->cursor);
}
$arg = new Node\ConstantNode($token->value);
$arguments = new Node\ArgumentsNode();
if ($this->stream->current->test(Token::PUNCTUATION_TYPE, '(')) {
$type = Node\GetAttrNode::METHOD_CALL;
foreach ($this->parseArguments()->nodes as $n) {
$arguments->addElement($n);
}
} else {
$type = Node\GetAttrNode::PROPERTY_CALL;
}
$node = new Node\GetAttrNode($node, $arg, $arguments, $type);
} elseif ('[' === $token->value) {
$this->stream->next();
$arg = $this->parseExpression();
$this->stream->expect(Token::PUNCTUATION_TYPE, ']');
$node = new Node\GetAttrNode($node, $arg, new Node\ArgumentsNode(), Node\GetAttrNode::ARRAY_CALL);
} else {
break;
}
$token = $this->stream->current;
}
return $node;
}
public function parsePostfixExpression($node)
{
$token = $this->stream->current;
while ($token->type == Token::PUNCTUATION_TYPE) {
if ('.' === $token->value) {
$this->stream->next();
$token = $this->stream->current;
$this->stream->next();
if (
$token->type !== Token::NAME_TYPE
&&
// Operators like "not" and "matches" are valid method or property names,
//
// In other words, besides NAME_TYPE, OPERATOR_TYPE could also be parsed as a property or method.
// This is because operators are processed by the lexer prior to names. So "not" in "foo.not()" or "matches" in "foo.matches" will be recognized as an operator first.
// But in fact, "not" and "matches" in such expressions shall be parsed as method or property names.
//
// And this ONLY works if the operator consists of valid characters for a property or method name.
//
// Other types, such as STRING_TYPE and NUMBER_TYPE, can't be parsed as property nor method names.
//
// As a result, if $token is NOT an operator OR $token->value is NOT a valid property or method name, an exception shall be thrown.
($token->type !== Token::OPERATOR_TYPE || !preg_match('/[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*/A', $token->value))
) {
throw new SyntaxError('Expected name', $token->cursor);
}
$arg = new Node\ConstantNode($token->value);
$arguments = new Node\ArgumentsNode();
if ($this->stream->current->test(Token::PUNCTUATION_TYPE, '(')) {
$type = Node\GetAttrNode::METHOD_CALL;
foreach ($this->parseArguments()->nodes as $n) {
$arguments->addElement($n);
}
} else {
$type = Node\GetAttrNode::PROPERTY_CALL;
}
$node = new Node\GetAttrNode($node, $arg, $arguments, $type);
} elseif ('[' === $token->value) {
$this->stream->next();
$arg = $this->parseExpression();
$this->stream->expect(Token::PUNCTUATION_TYPE, ']');
$node = new Node\GetAttrNode($node, $arg, new Node\ArgumentsNode(), Node\GetAttrNode::ARRAY_CALL);
} else {
break;
}
$token = $this->stream->current;
}
return $node;
}