/**
* Tokenizer and preparser.
* @return array
*/
private function parseMacroArgs($input)
{
$this->tokenizer->tokenize($input);
$inTernary = $lastSymbol = $prev = NULL;
$tokens = $arrays = array();
$n = -1;
while (++$n < count($this->tokenizer->tokens)) {
$token = $this->tokenizer->tokens[$n];
$token['depth'] = $depth = count($arrays);
if ($token['type'] === self::T_COMMENT) {
continue;
// remove comments
} elseif ($token['type'] === self::T_WHITESPACE) {
$tokens[] = $token;
continue;
} elseif ($token['type'] === self::T_SYMBOL && ($prev === NULL || in_array($prev['value'], array(',', '(', '[', '=', '=>', ':', '?')))) {
$lastSymbol = count($tokens);
// quoting pre-requirements
} elseif (is_int($lastSymbol) && in_array($token['value'], array(',', ')', ']', '=', '=>', ':', '|'))) {
$tokens[$lastSymbol]['value'] = "'" . $tokens[$lastSymbol]['value'] . "'";
// quote symbols
$lastSymbol = NULL;
} else {
$lastSymbol = NULL;
}
if ($token['value'] === '?') {
// short ternary operators without :
$inTernary = $depth;
} elseif ($token['value'] === ':') {
$inTernary = NULL;
} elseif ($inTernary === $depth && ($token['value'] === ',' || $token['value'] === ')' || $token['value'] === ']')) {
// close ternary
$tokens[] = Tokenizer::createToken(':') + array('depth' => $depth);
$tokens[] = Tokenizer::createToken('null') + array('depth' => $depth);
$inTernary = NULL;
}
if ($token['value'] === '[') {
// simplified array syntax [...]
if ($arrays[] = $prev['value'] !== ']' && $prev['type'] !== self::T_SYMBOL && $prev['type'] !== self::T_VARIABLE) {
$tokens[] = Tokenizer::createToken('array') + array('depth' => $depth);
$token = Tokenizer::createToken('(');
}
} elseif ($token['value'] === ']') {
if (array_pop($arrays) === TRUE) {
$token = Tokenizer::createToken(')');
}
} elseif ($token['value'] === '(') {
// only count
$arrays[] = '(';
} elseif ($token['value'] === ')') {
// only count
array_pop($arrays);
}
$tokens[] = $prev = $token;
}
if (is_int($lastSymbol)) {
$tokens[$lastSymbol]['value'] = "'" . $tokens[$lastSymbol]['value'] . "'";
// quote symbols
}
if ($inTernary !== NULL) {
// close ternary
$tokens[] = Tokenizer::createToken(':') + array('depth' => count($arrays));
$tokens[] = Tokenizer::createToken('null') + array('depth' => count($arrays));
}
return $tokens;
}
