from functools import wraps

import dsp


# applied right to left (innermost first, like function calls)
def compose_decorators(*decorators):
    def decorator(func):
        for decorator in decorators[::-1]:
            func = decorator(func)
        return func
    return decorator


def shallow_copy_example_args(func):
    @wraps(func)
    def wrapper(*args, **kwargs):
        args = [dsp.Example(arg) if isinstance(arg, dsp.Example) else arg for arg in args]
        kwargs = {key: dsp.Example(value) if isinstance(value, dsp.Example) else value for key, value in kwargs.items()}
        return func(*args, **kwargs)
    return wrapper


transformation = shallow_copy_example_args
# transformation = compose_decorators(handle_compilation, shallow_copy_example_args)



def compiled(func):
    def wrapper(*args, **kwargs):
        is_to_be_compiled = True #decorator_kwargs.get('compile', False)
        compiled_lm = dsp.settings.compiled_lm

        if is_to_be_compiled and compiled_lm:
            assert len(args) == 1, len(args)
            example = args[0]

            with dsp.settings.context(lm=compiled_lm, show_guidelines=False):
                old_demos = list(example.demos)
                example = func(example.copy(demos=[]), **kwargs)
                return example.copy(demos=old_demos)
        
        with dsp.settings.context(compiling=True):
            return func(*args, **kwargs)

    return wrapper