Implement random generation methods on rpnSymbol

gte/__init__.py

@@ -1,2 +1,4 @@
 ##@brief GTE Genetic Turmits Evolver
 
+from . import turmit
+from . import rpnlib

gte/rpnlib.py

@@ -50,6 +50,10 @@ class RpnSymbol(object):
 
 
     def __init__(self, value, optype = VALUE):
+        ''' @brief RpnSymbol constructor
+            @param value int : positiv integer moded given optype
+            @param optype int : one of @ref OPERATION @ref VALUE @ref VARIABLE
+        '''
         self.optype = optype
         self.value = value
         if optype == self.OPERATION:
@@ -58,6 +62,7 @@ class RpnSymbol(object):
             self.value = list(_var_list.keys())[value % len(_var_list)]
 
     def __str__(self):
+        ''' @brief Return a string representation of current symbol '''
         if self.optype == self.OPERATION:
             return _op_list[self.value][0].__name__.upper()
         elif self.optype == self.VALUE:
@@ -66,10 +71,25 @@ class RpnSymbol(object):
             return self.value.upper()
 
     @classmethod
-    def random(cls):
-        optype = [cls.OPERATION, cls.VALUE, cls.VARIABLE]
-        optype = optype[random.randint(0,2)]
+    def random(cls, optype=None):
+        ''' @brief Return a randomly generated symbol '''
+        if optype is None:
+            optype = [cls.OPERATION, cls.VALUE, cls.VARIABLE]
+            optype = optype[random.randint(0,2)]
         return cls(random.randint(0, 0xFFFF), optype)
 
+    @classmethod
+    def rand_op(cls):
+        ''' @return Random operation '''
+        return cls.random(cls.OPERATION)
 
+    @classmethod
+    def rand_var(cls):
+        ''' @retrun Random variable '''
+        return cls.random(cls.VARIABLE)
+
+    @classmethod
+    def rand_value(cls):
+        ''' @return Random value '''
+        return cls.random(cls.VALUE)