在Python中将无上下文设计语法表达为内部DSL,可以通过以下方法实现:
class InternalDSLMeta(type):
def __new__(cls, name, bases, dct):
for key, value in dct.items():
if key.startswith("__"):
continue
dct[key] = cls.wrap_function(value)
return super().__new__(cls, name, bases, dct)
@staticmethod
def wrap_function(func):
def wrapper(*args, **kwargs):
print(f"Running {func.__name__} with args {args} and kwargs {kwargs}")
return func(*args, **kwargs)
return wrapper
class InternalDSL(metaclass=InternalDSLMeta):
def command1(self, arg1, arg2):
return arg1 + arg2
def command2(self, arg1, arg2):
return arg1 * arg2
dsl = InternalDSL()
result1 = dsl.command1(1, 2)
result2 = dsl.command2(3, 4)
print(f"Result 1: {result1}, Result 2: {result2}")
def internal_dsl_decorator(func):
def wrapper(*args, **kwargs):
print(f"Running {func.__name__} with args {args} and kwargs {kwargs}")
return func(*args, **kwargs)
return wrapper
class InternalDSL:
@internal_dsl_decorator
def command1(self, arg1, arg2):
return arg1 + arg2
@internal_dsl_decorator
def command2(self, arg1, arg2):
return arg1 * arg2
dsl = InternalDSL()
result1 = dsl.command1(1, 2)
result2 = dsl.command2(3, 4)
print(f"Result 1: {result1}, Result 2: {result2}")
这两种方法都可以实现在Python中将无上下文设计语法表达为内部DSL的目标。你可以根据自己的需求和喜好选择合适的方法。
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