Re-land "[lldb/docs] Silence warnings when generating website"

This reverts commit 18f1c1ace7 and fix the
build failure issues introduced because of the `STRING_EXTENSION_OUTSIDE`
swig macros.

Differential Revision: https://reviews.llvm.org/D159017

Signed-off-by: Med Ismail Bennani <ismail@bennani.ma>

lldb/bindings/python/python-extensions.swig

@@ -289,6 +289,24 @@ class declaration(object):
         self.line = line
         self.col = col
 
+    def __eq__(self, other):
+        return not self.__ne__(other)
+
+    def __int__(self):
+        pass
+
+    def __hex__(self):
+        pass
+
+    def __oct__(self):
+        pass
+
+    def __len__(self):
+        pass
+
+    def __iter__(self):
+        pass
+
 class value_iter(object):
     '''Allows iterating over the children of an :py:class:`SBValue`.'''
     def __iter__(self):
@@ -304,8 +322,24 @@ class value_iter(object):
     def next(self):
         return self.__next__()
 
+    def __eq__(self, other):
+        return not self.__ne__(other)
+
+    def __int__(self):
+        pass
+
+    def __hex__(self):
+        pass
+
+    def __oct__(self):
+        pass
+
+    def __len__(self):
+        return self.length
+
     def __init__(self,value):
         self.index = 0
+        self.length = 0
         self.sbvalue = value
         if type(self.sbvalue) is value:
             self.sbvalue = self.sbvalue.sbvalue
@@ -546,6 +580,21 @@ class SBSyntheticValueProvider(object):
     def has_children(self):
         return False
 
+    def __int__(self):
+      pass
+
+    def __hex__(self):
+      pass
+
+    def __oct__(self):
+      pass
+
+    def __len__(self):
+      return self.num_children()
+
+    def __iter__(self):
+      '''Iterate over all children in a lldb.SBSyntheticValueProvider object.'''
+      return lldb_iter(self, 'num_children', 'get_child_at_index')
 
 %}
 

lldb/bindings/python/python.swig

@@ -106,6 +106,21 @@ def lldb_iter(obj, getsize, getelem):
     elem = getattr(obj, getelem)
     for i in range(size()):
         yield elem(i)
+
+def __int__(self):
+  pass
+
+def __hex__(self):
+  pass
+
+def __oct__(self):
+  pass
+
+def __len__(self):
+  pass
+
+def __iter__(self):
+  pass
 %}
 
 %include <std_string.i>