/**
* Parses function
*
* @return XmlImportAstFunction
*/
private function parseFunction()
{
$function = new XmlImportAstFunction($this->tokens[++$this->index]->getValue());
if ($this->tokens[$this->index + 1]->getKind() != XmlImportToken::KIND_OPEN) {
throw new XmlImportException("Open brace expected instead of " . $this->tokens[$this->index + 1]->getKind());
}
$this->index++;
if ($this->tokens[$this->index + 1]->getKind() == XmlImportToken::KIND_CLOSE) {
$this->index++;
return $function;
} else {
while ($this->index < count($this->tokens) - 2) {
$function->addArgument($this->parseExpression());
if ($this->tokens[$this->index + 1]->getKind() == XmlImportToken::KIND_CLOSE) {
$this->index++;
return $function;
break;
} elseif ($this->tokens[$this->index + 1]->getKind() == XmlImportToken::KIND_COMMA) {
$this->index++;
} else {
throw new XmlImportException("Comma or closing brace expected instead of " . $this->tokens[$this->index + 1]->getKind());
}
}
throw new XmlImportException("Unexpected end of {$function->getName()} function argument list");
}
}
/**
* Generates code for a function
*
* @param XmlImportAstFunction $function
* @return string
*/
private function generateForFunction(XmlImportAstFunction $function)
{
$result = $function->getName() . '(';
$arguments = $function->getArguments();
for ($i = 0; $i < count($arguments); $i++) {
$result .= $this->generateForExpression($arguments[$i], true);
if ($i < count($arguments) - 1) {
$result .= ', ';
}
}
$result .= ')';
return $result;
}