Feat(API): +*/ for Tokens

mapytex/calculus/API/tokens/number.py

@@ -92,7 +92,7 @@ class Fraction(Token):
         if not isinstance(a, MO):
             if isinstance(a, str):
                 num, denom = a.split('/')
-                mo = MOFraction(num, denom)
+                mo = MOFraction(int(num), int(denom))
             else:
                 raise TypeError
         else:

mapytex/calculus/API/tokens/token.py

@@ -63,13 +63,10 @@ class Token(object):
     def __tex__(self):
         return self._mo.__tex__
 
-    def __add__(self, other):
-        """ Adding 2 Tokens or a Token and a Expression
-
-        :example:
-        >>> from .number import Integer 
-        >>> a = Integer(3)
-
+    def _operate(self, other, operation):
+        """ Make a operation between 2 Tokens, 
+        a Token and en Expression ora
+        a Token an a builtin type
         """
         from ..expression import Expression
         from ...core import Tree
@@ -78,10 +75,95 @@ class Token(object):
             _other = factory(other)
         else:
             _other = other
-        tree = Tree('+', self.mo, _other.mo)
-        ans = Expression(tree).simplify()
-        return ans
+        tree = Tree(operation, self._mo, _other._mo)
+        return Expression(tree).simplify()
 
+    def __add__(self, other):
+        """ Adding 2 Tokens or a Token and a Expression
+
+        :example:
+        >>> from .number import Integer 
+        >>> a = Integer(3)
+        >>> b = Integer(7)
+        >>> c = a + b
+        >>> c
+        <Integer 10>
+        >>> for i in c.explain():
+        ...    print(i)
+        3 + 7
+        10
+        >>> from .number import Fraction 
+        >>> a = Fraction("4/3")
+        >>> b = Integer(7)
+        >>> c = a + b
+        >>> c
+        <Fraction 25 / 3>
+        >>> for i in c.explain():
+        ...    print(i)
+        4 / 3 + 7
+        4 / 3 + 7 / 1
+        4 / 3 + (7 * 3) / (1 * 3)
+        4 / 3 + 21 / 3
+        (4 + 21) / 3
+        25 / 3
+        """
+        return self._operate(other, "+")
+
+    def __mul__(self, other):
+        """ Multiply 2 Tokens or a Token and a Expression
+
+        :example:
+        >>> from .number import Integer 
+        >>> a = Integer(3)
+        >>> b = Integer(7)
+        >>> c = a * b
+        >>> c
+        <Integer 21>
+        >>> for i in c.explain():
+        ...    print(i)
+        3 * 7
+        21
+        >>> from .number import Fraction 
+        >>> a = Fraction("4/3")
+        >>> b = Integer(7)
+        >>> c = a * b
+        >>> c
+        <Fraction 28 / 3>
+        >>> for i in c.explain():
+        ...    print(i)
+        4 / 3 * 7
+        (4 * 7) / 3
+        28 / 3
+        """
+        return self._operate(other, "*")
+
+    def __truediv__(self, other):
+        """ Divising 2 Tokens or a Token and a Expression
+
+        :example:
+        >>> from .number import Integer 
+        >>> a = Integer(3)
+        >>> b = Integer(7)
+        >>> c = a / b
+        >>> c
+        <Fraction 3 / 7>
+        >>> for i in c.explain():
+        ...    print(i)
+        3 / 7
+        >>> from .number import Fraction 
+        >>> a = Fraction("4/3")
+        >>> b = Integer(7)
+        >>> c = a / b
+        >>> c
+        <Fraction 4 / 21>
+        >>> for i in c.explain():
+        ...    print(i)
+        4 / 3 / 7
+        4 / 3 * 1 / 7
+        (4 * 1) / (3 * 7)
+        4 / 21
+        """
+        return self._operate(other, "/")