dirstate-entry: add a `added` property

Lets use more semantic property instead of the `state` implementation details.

Differential Revision: https://phab.mercurial-scm.org/D10968

mercurial/cext/parsers.c

@@ -158,6 +158,15 b' static PyObject *dirstatetuple_get_state'
 	return PyBytes_FromStringAndSize(&self->state, 1);
 };
 
+static PyObject *dirstatetuple_get_added(dirstateTupleObject *self)
+{
+	if (self->state == 'a') {
+		Py_RETURN_TRUE;
+	} else {
+		Py_RETURN_FALSE;
+	}
+};
+
 static PyObject *dirstatetuple_get_merged(dirstateTupleObject *self)
 {
 	if (self->state == 'm') {
@@ -205,6 +214,7 b' static PyObject *dirstatetuple_get_remov'
 
 static PyGetSetDef dirstatetuple_getset[] = {
     {"state", (getter)dirstatetuple_get_state, NULL, "state", NULL},
+    {"added", (getter)dirstatetuple_get_added, NULL, "added", NULL},
     {"merged_removed", (getter)dirstatetuple_get_merged_removed, NULL,
      "merged_removed", NULL},
     {"merged", (getter)dirstatetuple_get_merged, NULL, "merged", NULL},

mercurial/dirstate.py

@@ -1346,7 +1346,7 b' class dirstate(object):'
                     cadd(fn)
             elif t.merged:
                 madd(fn)
-            elif state == b'a':
+            elif t.added:
                 aadd(fn)
             elif t.removed:
                 radd(fn)

mercurial/pure/parsers.py

@@ -87,6 +87,11 b' class dirstatetuple(object):'
         return self._state
 
     @property
+    def added(self):
+        """True if the file has been added"""
+        return self._state == b'a'
+
+    @property
     def merged(self):
         """True if the file has been merged