Add string.py

#1

Author: n1nj4t4nuk1

pyvalueobjects/strings/string.py

@@ -0,0 +1,36 @@
+from pyvalueobjects.abstract.valueobject import ValueObject
+from pyvalueobjects.errors.ValueObjectError import ValueObjectError
+
+
+class String(ValueObject):
+
+    _ALLOWED_INPUT_TYPES = {str, int, float, bool}
+
+    def __init__(self, value: str):
+        super().__init__(value)
+        self._validate(value)
+
+    def _validate(self, value):
+        input_type = type(value)
+        if input_type != str:
+            raise ValueObjectError(f'Input type should be: str.')
+
+    @classmethod
+    def from_float(cls, value: float):
+        if type(value) != float:
+            raise ValueObjectError('Input type should be float.')
+
+        try:
+            return cls(str(value))
+        except Exception as _:
+            raise ValueObjectError('Input type should be valid float.')
+
+    @classmethod
+    def from_int(cls, value: int):
+        if type(value) != int:
+            raise ValueObjectError('Input type should be int.')
+
+        try:
+            return cls(str(value))
+        except Exception as _:
+            raise ValueObjectError('Input type should be valid int.')