[gnome-code-assistance/wip/completion_python: 2/2] [backend/python] initial support for completion

[Igor Gnatenko <ignatenko src gnome org>]

commit 94951c29150f3e39dc44143ea50959859aad4e3b
Author: Igor Gnatenko <ignatenko src gnome org>
Date:   Mon Jan 12 16:31:40 2015 +0300

    [backend/python] initial support for completion
    
    Signed-off-by: Igor Gnatenko <ignatenko src gnome org>

 README                      |    2 +-
 backends/python/__init__.py |   22 +++++++++++++++++++++-
 2 files changed, 22 insertions(+), 2 deletions(-)
---
diff --git a/README b/README
index 1f1f749..403fbb8 100644
--- a/README
+++ b/README
@@ -184,7 +184,7 @@ Dependencies : gjs
 Dependencies : python, python-dbus, python-simplejson
 
 ### Python
-Dependencies : python, python-dbus
+Dependencies : python, python-dbus, python-jedi
 Optional dependencies : pylint (enabled only if you will pass "pylint" in "options" to dbus service), pep8 
(run when present)
 
 ### Ruby
diff --git a/backends/python/__init__.py b/backends/python/__init__.py
index 9476d6f..63263b5 100644
--- a/backends/python/__init__.py
+++ b/backends/python/__init__.py
@@ -18,6 +18,7 @@
 # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 
 import ast
+import jedi
 import subprocess
 import re
 
@@ -65,9 +66,28 @@ class PyLint(object):
         return self.diagnostics
 
 
-class Service(transport.Service):
+class Service(transport.Service, transport.Completion):
     language = 'python'
 
+    def complete(self, doc, options):
+        items = []
+        file_content = []
+        with open(doc.data_path, "r") as f:
+           file_content = f.readlines()
+        source = "".join(file_content)
+        script = jedi.Script(source,
+                             doc.cursor.line + 1,
+                             doc.cursor.column - 1,
+                             "example.py")
+        completions = script.completions()
+        completions = sorted(completions, key=lambda d: d.name)
+        for comp in completions:
+            items.append(types.Completion(
+                comp.name,
+                [types.Completion.Chunk(comp.name)],
+                description=comp.description))
+        return items
+
     def parse(self, doc, options):
         doc.diagnostics = []