Now the lexer is injected only once when creating the parser. Instead of
$parser = new PHPParser_Parser;
$parser->parse(new PHPParser_Lexer($code));
$parser->parse(new PHPParser_Lexer($code2));
you write:
$parser = new PHPParser_Parser(new PHPParser_Lexer);
$parser->parse($code);
$parser->parse($code2);
The NameResolver visitor tries to resolve all names to fully qualified names. It will resolve all non-dynamic names, apart from unqualified function and constant names. The latter can not be resolved properly without running the code.
