def enter_class(self, package: Package, src: SourceFile,
ctx: PlayParser.ClassDeclarationContext):
cls = Class(ctx.IDENTIFIER().getText(), package, src)
cls.is_interface = ctx.INTERFACE() is not None
cls.is_native = ctx.NATIVE() is not None
if cls.is_native and cls.is_interface:
raise CompileException('interface {} cannot be native'.format(cls))
Option().nodes[cls] = ctx
package.put(cls)
SymbolTable().enter_class(cls)
