Adds debug console completion

debugger_protocol/messages/_requests.py

@@ -83,6 +83,7 @@ class Capabilities(FieldsNamespace):
         Field('supportsSetExpression', bool),
         Field('supportsModulesRequest', bool),
         Field('supportsDebuggerProperties', bool),
+        Field('supportsCompletionsRequest', bool),
     ]
 
 

ptvsd/wrapper.py

@@ -54,6 +54,14 @@
 #    print(s)
 #ipcjson._TRACE = ipcjson_trace
 
+#completion types.
+TYPE_IMPORT = '0'
+TYPE_CLASS = '1'
+TYPE_FUNCTION = '2'
+TYPE_ATTR = '3'
+TYPE_BUILTIN = '4'
+TYPE_PARAM = '5'
+
 
 def NOOP(*args, **kwargs):
     pass
@@ -952,6 +960,7 @@ def _stop_event_loop(self):
 
 
 INITIALIZE_RESPONSE = dict(
+    supportsCompletionsRequest=True,
     supportsConditionalBreakpoints=True,
     supportsConfigurationDoneRequest=True,
     supportsDebuggerProperties=True,
@@ -2222,6 +2231,43 @@ def on_exceptionInfo(self, request, args):
                      'source': source},
         )
 
+    @async_handler
+    def on_completions(self, request, args):
+        type_look_up = {
+            TYPE_IMPORT: 'module',
+            TYPE_CLASS: 'class',
+            TYPE_FUNCTION: 'function',
+            TYPE_ATTR: 'field',
+            TYPE_BUILTIN: 'keyword',
+            TYPE_PARAM: 'variable',
+        }
+
+        text = args['text'] # required argument
+        vsc_fid = args.get('frameId', None)
+
+        try:
+            pyd_tid, pyd_fid = self.frame_map.to_pydevd(vsc_fid)
+        except KeyError:
+            self.send_error_response(request)
+
+        cmd_args = '{}\t{}\t{}\t{}'.format(pyd_tid, pyd_fid, 'LOCAL', text)
+        _, _, resp_args = yield self.pydevd_request(
+            pydevd_comm.CMD_GET_COMPLETIONS,
+            cmd_args)
+
+        xml = self.parse_xml_response(resp_args)
+        targets = []
+        for item in list(xml.comp):
+            target = {}
+            target['label'] = unquote(item['p0'])
+            try:
+                target['type'] = type_look_up[item['p3']]
+            except KeyError:
+                pass
+            targets.append(target)
+
+        self.send_response(request, targets=targets)
+
     # Custom ptvsd message
     def on_ptvsd_systemInfo(self, request, args):
         try:

tests/resources/system_tests/test_completions/attach_completions.py

@@ -0,0 +1,23 @@
+import sys
+import ptvsd
+
+ptvsd.enable_attach((sys.argv[1], sys.argv[2]))
+ptvsd.wait_for_attach()
+
+
+class SomeClass():
+    def __init__(self, someVar):
+        self.some_var = someVar
+
+    def do_someting(self):
+        someVariable = self.some_var
+        return someVariable
+
+
+def someFunction(someVar):
+    someVariable = someVar
+    return SomeClass(someVariable).do_someting()
+
+
+someFunction('value')
+print('done')

tests/resources/system_tests/test_completions/launch_completions.py

@@ -0,0 +1,16 @@
+class SomeClass():
+    def __init__(self, someVar):
+        self.some_var = someVar
+
+    def do_someting(self):
+        someVariable = self.some_var
+        return someVariable
+
+
+def someFunction(someVar):
+    someVariable = someVar
+    return SomeClass(someVariable).do_someting()
+
+
+someFunction('value')
+print('done')