Resolve "Create parser for variables from the json object"

Closes #3 (closed)

generator/var_parser.py

+from typing import List
+
 import yaml
 
 from generator.var_object import Variable
 
 
+def get_variables(variables_raw: dict) -> List[Variable]:
+    var_objects = []
+    for variable_name, variable_options in variables_raw.items():
+        v_type = variable_options["type"]
+        v_min = variable_options.get("min")
+        v_max = variable_options.get("max")
+        v_length = variable_options.get("length")
+        v_prohibited = variable_options.get("prohibited")
+        if v_prohibited is None:
+            v_prohibited = []
+        var_objects.append(Variable(variable_name, v_type, v_min, v_max, v_prohibited, v_length))
+
+    return var_objects
+
+
 def parser_var_file(var_file):
     """
         Main function to parsen source data stored in file.
@@ -19,20 +36,9 @@ def parser_var_file(var_file):
 
         """
     try:
-        var_list = yaml.load(var_file, Loader=yaml.FullLoader)
-        var_objects = []
-        for var in var_list.keys():
-            v_name = var
-            v_type = var_list[var]["type"]
-            v_min = var_list[var].get("min")
-            v_max = var_list[var].get("max")
-            v_length = var_list[var].get("length")
-            v_prohibited = var_list[var].get("prohibited")
-            if v_prohibited is None:
-                v_prohibited = []
-            var_objects.append(Variable(v_name, v_type, v_min, v_max, v_prohibited, v_length))
-    except Exception as e:
-        print("Error occure")
+        variables_raw = yaml.load(var_file, Loader=yaml.FullLoader)
+        return get_variables(variables_raw)
+    except Exception as exc:
+        # TODO: Remove this horrendous exception handling!
+        print(f"Something went wrong: {exc}")
         return None
-
-    return var_objects