Introduce config source for "pyls"

Author: flying-foozy

pyls/config/config.py

@@ -40,6 +40,9 @@ def __init__(self, root_uri, init_opts, process_id, capabilities):
         except ImportError:
             pass
 
+        from .pyls_conf import PylsConfig
+        self._config_sources['pyls'] = PylsConfig(self._root_path)
+
         self._pm = pluggy.PluginManager(PYLS)
         self._pm.trace.root.setwriter(log.debug)
         self._pm.enable_tracing()
@@ -104,7 +107,7 @@ def settings(self, document_path=None):
         settings.cache_clear() when the config is updated
         """
         settings = {}
-        sources = self._settings.get('configurationSources', DEFAULT_CONFIG_SOURCES)
+        sources = self._settings.get('configurationSources', DEFAULT_CONFIG_SOURCES) + ['pyls']
 
         for source_name in reversed(sources):
             source = self._config_sources.get(source_name)

pyls/config/pyls_conf.py

@@ -0,0 +1,25 @@
+import logging
+from pyls._utils import find_parents
+from .source import ConfigSource
+
+log = logging.getLogger(__name__)
+
+CONFIG_KEY = 'pyls'
+PROJECT_CONFIGS = ['setup.cfg', 'tox.ini']
+
+OPTIONS = [
+]
+
+
+class PylsConfig(ConfigSource):
+    """Parse pyls configuration"""
+
+    def user_config(self):
+        # pyls specific configuration mainly focuses on per-project
+        # configuration
+        return {}
+
+    def project_config(self, document_path):
+        files = find_parents(self.root_path, document_path, PROJECT_CONFIGS)
+        config = self.read_config_from_files(files)
+        return self.parse_config(config, CONFIG_KEY, OPTIONS)