public static function dumpTokens(TokenIterator $tokens)
{
$position = $tokens->position;
while ($token = $tokens->nextToken()) {
list($value, $_, $type) = $token;
$typeFmt = str_pad($type, 15, ' ', STR_PAD_LEFT);
// $value = trim($value);
echo "{$typeFmt}: ▷{$value}◁\n";
}
$tokens->position = $position;
}
/**
* @param TokenIterator $tokens
* @return mixed TODO
*/
public function parse(TokenIterator $tokens)
{
$state = self::HOST;
$hosts = [];
$keyword = NULL;
$currentHost = [];
$close = function ($currentHost) use(&$hosts) {
$key = $currentHost['host'];
$hosts[$key] = array_replace($currentHost, isset($hosts[$key]) ? $hosts[$key] : []);
};
while ($token = $tokens->nextToken()) {
list($value, $_, $type) = $token;
$value = trim($value);
switch ($type) {
case Lexer::T_NEWLINE:
case Lexer::T_SEPARATOR:
case Lexer::T_COMMENT:
break;
case Lexer::T_KEYWORD:
$keyword = strToLower($value);
if ($keyword === 'host') {
$this->assertState([self::HOST, self::KEYWORD], $state);
if ($currentHost !== []) {
call_user_func($close, $currentHost);
}
$currentHost = [];
} else {
$this->assertState([self::KEYWORD], $state);
}
$state = self::ARGUMENTS;
break;
case Lexer::T_ARG_QUOT:
$value = substr($value, 1, -1);
// intentional fall-through
// intentional fall-through
case Lexer::T_ARG:
$this->assertState([self::ARGUMENTS], $state);
if (!array_key_exists($keyword, $currentHost)) {
$currentHost[$keyword] = $value;
}
$state = self::KEYWORD;
break;
}
}
call_user_func($close, $currentHost);
return $hosts;
}
private function processArgs(TokenIterator $iterator, $modifierName, $inArray)
{
$result = [];
$iterator->position++;
while (isset($iterator->tokens[$iterator->position])) {
list($value, , $type) = $iterator->currentToken();
if ($type === self::TOKEN_RBRACKET) {
if ($inArray) {
return $result;
} else {
throw new InvalidModifierDefinitionException("Modifier {" . "{$modifierName}} mismatches brackets.");
}
} elseif ($type === self::TOKEN_STRING || $type === self::TOKEN_KEYWORD) {
$iterator->position++;
list(, , $nextToken) = $iterator->currentToken();
if ($nextToken === self::TOKEN_EQUAL) {
$iterator->position++;
list(, , $nextToken) = $iterator->currentToken();
$nextValue = $iterator->currentValue();
if ($nextToken === self::TOKEN_LBRACKET) {
$result[$value] = $this->processArgs($iterator, $modifierName, TRUE);
} elseif ($nextToken === self::TOKEN_STRING || $nextToken === self::TOKEN_KEYWORD) {
$result[$value] = $nextValue;
} elseif ($nextToken !== NULL) {
throw new InvalidModifierDefinitionException("Modifier {" . "{$modifierName}} has invalid token after =.");
}
} elseif ($type !== NULL) {
$iterator->position--;
$result[] = $value;
}
} else {
throw new InvalidModifierDefinitionException("Modifier {" . "{$modifierName}} has invalid token, expected string or keyword.");
}
$iterator->position++;
list(, , $type) = $iterator->currentToken();
if ($type === self::TOKEN_RBRACKET && $inArray) {
return $result;
} elseif ($type !== NULL && $type !== self::TOKEN_SEPARATOR) {
throw new InvalidModifierDefinitionException("Modifier {" . "{$modifierName}} misses argument separator.");
}
$iterator->position++;
}
if ($inArray) {
throw new InvalidModifierDefinitionException("Modifier {" . "{$modifierName}} has unclosed array argument.");
}
return $result;
}
protected function next()
{
parent::next();
if ($this->isCurrent('[', '(', '{')) {
$this->depth++;
} elseif ($this->isCurrent(']', ')', '}')) {
$this->depth--;
}
}
/**
* @param TokenIterator $tokens
* @param array|string $types
* @param array|string $allowedToSkip
* @throws \Kdyby\Aop\ParserException
* @return NULL|string
*/
protected static function nextValue(TokenIterator $tokens, $types, $allowedToSkip = [])
{
do {
if (call_user_func_array([$tokens, 'isCurrent'], (array) $types)) {
return $tokens->currentValue();
}
if (!$allowedToSkip || !call_user_func_array([$tokens, 'isCurrent'], (array) $allowedToSkip)) {
$type = $tokens->currentToken();
throw new Kdyby\Aop\ParserException('Unexpected token ' . $type[Tokenizer::TYPE] . ' at offset ' . $type[Tokenizer::OFFSET]);
}
} while ($token = $tokens->nextToken());
throw new Kdyby\Aop\ParserException('Expected token ' . implode(', ', (array) $types));
}
