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128 lines
4.1 KiB
128 lines
4.1 KiB
6 months ago
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import inspect
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import warnings
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from enum import Enum, auto
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from typing import Any, Dict, List, Optional, Tuple, Type, Union
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from .generator import Generator
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from .providers import BaseProvider
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from .proxy import Faker
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class FakerEnum(Enum):
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"""Required for faker.providers.enum"""
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A = auto
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B = auto
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class Documentor:
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def __init__(self, generator: Union[Generator, Faker]) -> None:
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"""
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:param generator: a localized Generator with providers filled,
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for which to write the documentation
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:type generator: faker.Generator()
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"""
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self.generator = generator
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self.max_name_len: int = 0
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self.already_generated: List[str] = []
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def get_formatters(
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self,
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locale: Optional[str] = None,
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excludes: Optional[List[str]] = None,
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**kwargs: Any,
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) -> List[Tuple[BaseProvider, Dict[str, str]]]:
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self.max_name_len = 0
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self.already_generated = [] if excludes is None else excludes[:]
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formatters = []
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providers: List[BaseProvider] = self.generator.get_providers()
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for provider in providers[::-1]: # reverse
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if locale and provider.__lang__ and provider.__lang__ != locale:
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continue
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formatters.append(
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(provider, self.get_provider_formatters(provider, **kwargs)),
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)
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return formatters
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def get_provider_formatters(
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self,
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provider: BaseProvider,
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prefix: str = "fake.",
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with_args: bool = True,
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with_defaults: bool = True,
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) -> Dict[str, str]:
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formatters = {}
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for name, method in inspect.getmembers(provider, inspect.ismethod):
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# skip 'private' method and inherited methods
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if name.startswith("_") or name in self.already_generated:
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continue
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arguments = []
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faker_args: List[Union[str, Type[Enum]]] = []
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faker_kwargs = {}
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if name == "binary":
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faker_kwargs["length"] = 1024
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elif name in ["zip", "tar"]:
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faker_kwargs.update(
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{
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"uncompressed_size": 1024,
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"min_file_size": 512,
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}
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)
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if name == "enum":
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faker_args = [FakerEnum]
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if with_args:
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# retrieve all parameter
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argspec = inspect.getfullargspec(method)
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lst = [x for x in argspec.args if x not in ["self", "cls"]]
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for i, arg in enumerate(lst):
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if argspec.defaults and with_defaults:
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try:
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default = argspec.defaults[i]
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if isinstance(default, str):
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default = repr(default)
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else:
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# TODO check default type
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default = f"{default}"
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arg = f"{arg}={default}"
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except IndexError:
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pass
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arguments.append(arg)
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if with_args == "first":
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break
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if with_args != "first":
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if argspec.varargs:
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arguments.append("*" + argspec.varargs)
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if argspec.varkw:
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arguments.append("**" + argspec.varkw)
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# build fake method signature
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signature = f"{prefix}{name}({', '.join(arguments)})"
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try:
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# make a fake example
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example = self.generator.format(name, *faker_args, **faker_kwargs)
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except (AttributeError, ValueError) as e:
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warnings.warn(str(e))
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continue
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formatters[signature] = example
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self.max_name_len = max(self.max_name_len, *(len(part) for part in signature.split()))
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self.already_generated.append(name)
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return formatters
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@staticmethod
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def get_provider_name(provider_class: BaseProvider) -> str:
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return provider_class.__provider__
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