protected function splitExpressionString()
{
$tokenizer = new ExpressionTokenizer('{', '}');
$tokens = $tokenizer->tokenize($this->expressionString);
if ($tokens != null) {
foreach ($tokens as $token) {
if (is_array($token)) {
$this->expressionParts[] = new ExpressionContent($token);
} else {
$this->expressionParts[] = $token;
}
}
}
}
private function parseBrackets()
{
$tokenizer = new ExpressionTokenizer('(', ')');
$tokens = $tokenizer->tokenize($this->contentString);
if ($tokens != null) {
for ($i = 0; $i < count($tokens); $i++) {
if (is_array($tokens[$i])) {
$this->bracketParts[] = new ExpressionBracket($tokens[$i], $this->contentParts);
//, $this->operationParts);
$this->bracketString .= '(' . $i . ')';
} else {
$this->bracketParts[] = $tokens[$i];
$this->bracketString .= $tokens[$i];
}
}
}
}