From 8f99d1e71e668b87e962ee4487328c6eaaef087a Mon Sep 17 00:00:00 2001
From: Bertrand Benjamin <benjamin.bertrand@opytex.org>
Date: Fri, 23 Nov 2018 10:05:36 +0100
Subject: [PATCH] Feat(Core): Add signature to mos

---
 mapytex/calculus/core/MO/mo.py       | 16 ++++++++++++++++
 mapytex/calculus/core/MO/monomial.py | 24 ++++++++++++++++++++++++
 2 files changed, 40 insertions(+)

diff --git a/mapytex/calculus/core/MO/mo.py b/mapytex/calculus/core/MO/mo.py
index 08340e9..ad3c9a1 100644
--- a/mapytex/calculus/core/MO/mo.py
+++ b/mapytex/calculus/core/MO/mo.py
@@ -46,6 +46,7 @@ class MO(object):
     
     :attr value: sympy compatible version of the MO
     :attr _tree: tree version of the MO
+    :attr _signature: Name to identify the MO in the API
 
     """
 
@@ -67,6 +68,7 @@ class MO(object):
             self._tree = value
 
         self.is_scalar = True
+        self._signature = None
 
     @classmethod
     def factory(cls, value):
@@ -128,6 +130,18 @@ class MO(object):
         except AttributeError:
             return self._tree == other
 
+    @property
+    def signature(self):
+        """ Name of the mo in the API
+        
+        :example:
+        >>> MOnumber(3).signature
+        'scalar'
+        >>> MOstr("x").signature
+        'monome1'
+        """
+        return self._signature
+
 @total_ordering
 class MOnumber(MO):
 
@@ -168,6 +182,7 @@ class MOnumber(MO):
             raise MOError("The value of an MOnumber need to be a int, a float or a Decimal")
 
         self.value = self._tree
+        self._signature = "scalar"
 
     @property
     def __txt__(self):
@@ -234,6 +249,7 @@ class MOstr(MO):
         MO.__init__(self, val)
         self.is_scalar = False
         self._variable = val
+        self._signature = "monome1"
 
     @property
     def variable(self):
diff --git a/mapytex/calculus/core/MO/monomial.py b/mapytex/calculus/core/MO/monomial.py
index 2f00168..26b9836 100644
--- a/mapytex/calculus/core/MO/monomial.py
+++ b/mapytex/calculus/core/MO/monomial.py
@@ -74,6 +74,18 @@ class MOstrPower(MO):
     def power(self):
         return self._power
 
+    @property
+    def signature(self):
+        """ Name of the mo in the API
+        
+        :example:
+        >>> MOstrPower("x", 3).signature
+        'monome3'
+        >>> MOstrPower("x", 2).signature
+        'monome2'
+        """
+        return f"monome{self.power}"
+
 class MOMonomial(MO):
 
     """ Monomial math object"""
@@ -151,6 +163,18 @@ class MOMonomial(MO):
     def power(self):
         return self._power
 
+    @property
+    def signature(self):
+        """ Name of the mo in the API
+        
+        :example:
+        >>> MOMonomial(2, "x").signature
+        'monome1'
+        >>> MOMonomial(4, "x", 2).signature
+        'monome2'
+        """
+        return f"monome{self.power}"
+
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