(func)
| 102 | retcheck = annotations.pop('return_', None) |
| 103 | |
| 104 | def decorate(func): |
| 105 | sig = signature(func) |
| 106 | |
| 107 | @wraps(func) |
| 108 | def wrapper(*args, **kwargs): |
| 109 | bound = sig.bind(*args, **kwargs) |
| 110 | errors = [] |
| 111 | |
| 112 | # Enforce argument checks |
| 113 | for name, validator in annotations.items(): |
| 114 | try: |
| 115 | validator.check(bound.arguments[name]) |
| 116 | except Exception as e: |
| 117 | errors.append(f' {name}: {e}') |
| 118 | |
| 119 | if errors: |
| 120 | raise TypeError('Bad Arguments\n' + '\n'.join(errors)) |
| 121 | |
| 122 | result = func(*args, **kwargs) |
| 123 | |
| 124 | if retcheck: |
| 125 | try: |
| 126 | retcheck.check(result) |
| 127 | except Exception as e: |
| 128 | raise TypeError(f'Bad return: {e}') from None |
| 129 | return result |
| 130 | return wrapper |
| 131 | return decorate |
| 132 | |
| 133 | # Examples |
nothing calls this directly
no outgoing calls
no test coverage detected