/**
* Recursively process array declarations.
* @return array
* @throws Exception when there's an invalid token
*/
protected function process_array()
{
$t_array = array();
$t_count = 0;
$this->tokens->ensure_matches(T_ARRAY);
$this->tokens->ensure_matches('(');
# Loop until we reach the end of the array
while (!$this->tokens->matches(')')) {
# A comma is required before each element except the first one
if ($t_count > 0) {
$this->tokens->ensure_matches(',');
}
switch ($this->tokens->type()) {
# Nested array
case T_ARRAY:
$t_array[] = $this->process_array();
break;
# Value
# Value
case T_CONSTANT_ENCAPSED_STRING:
case T_STRING:
case T_LNUMBER:
case T_DNUMBER:
$t_str = $this->process_value();
if ($this->tokens->matches(T_DOUBLE_ARROW)) {
# key => value
$this->tokens->pop();
if ($this->tokens->matches(T_ARRAY)) {
$t_array[$t_str] = $this->process_array();
} else {
$t_array[$t_str] = $this->process_value();
}
} else {
# Simple value
$t_array[] = $t_str;
}
break;
case ')':
# Cover the trailing ',' case
break;
default:
throw new Exception("Invalid token '" . $this->tokens->value() . "'");
}
$t_count++;
}
$this->tokens->ensure_matches(')');
return $t_array;
}
