private void init ( Symtab syms , boolean definitive ) { if ( classes != null ) return ; if ( definitive ) { Assert . check ( packages == null || packages == syms . packages ) ; packages = syms . packages ; Assert . check ( classes == null || classes == syms . classes ) ; classes = syms . classes ; } else { packages = new HashMap < Name , PackageSymbol > ( ) ; classes = new HashMap < Name , ClassSymbol > ( ) ; } packages . put ( names . empty , syms . rootPackage ) ; syms . rootPackage . completer = thisCompleter ; syms . unnamedPackage . completer = thisCompleter ; }
Initialize classes and packages optionally treating this as the definitive classreader .