Configurable preloaded modules

pyls/plugins/preload_imports.py

@@ -0,0 +1,34 @@
+# Copyright 2017 Palantir Technologies, Inc.
+import logging
+from pyls import hookimpl
+
+log = logging.getLogger(__name__)
+
+MODULES = [
+    "OpenGL", "PIL",
+    "array", "audioop", "binascii", "cPickle", "cStringIO", "cmath", "collections",
+    "datetime", "errno", "exceptions", "gc", "imageop", "imp", "itertools",
+    "marshal", "math", "matplotlib", "mmap", "mpmath", "msvcrt", "networkx", "nose", "nt",
+    "numpy", "operator", "os", "os.path", "pandas", "parser", "rgbimg", "scipy", "signal",
+    "skimage", "sklearn", "statsmodels", "strop", "sympy", "sys", "thread", "time",
+    "wx", "xxsubtype", "zipimport", "zlib"
+]
+
+
+@hookimpl
+def pyls_settings():
+    # Setup default modules to preload, and rope extension modules
+    return {
+        'plugins': {'preload': {'modules': MODULES}},
+        'rope': {'extensionModules': MODULES}
+    }
+
+
+@hookimpl
+def pyls_initialize(config):
+    for mod_name in config.plugin_settings('preload').get('modules', []):
+        try:
+            __import__(mod_name)
+            log.debug("Preloaded module %s", mod_name)
+        except ImportError:
+            pass

pyls/workspace.py

@@ -3,8 +3,6 @@
 import logging
 import os
 import re
-import imp
-import pkgutil
 
 import jedi
 
@@ -17,59 +15,11 @@
 RE_END_WORD = re.compile('^[A-Za-z_0-9]*')
 
 
-def get_submodules(mod):
-    """Get all submodules of a given module"""
-    def catch_exceptions(_module):
-        pass
-
-    try:
-        m = __import__(mod)
-        submodules = [mod]
-        submods = pkgutil.walk_packages(m.__path__, m.__name__ + '.', catch_exceptions)
-        for sm in submods:
-            sm_name = sm[1]
-            submodules.append(sm_name)
-    except ImportError:
-        return []
-    except:  # pylint: disable=bare-except
-        return [mod]
-    return submodules
-
-
-def get_preferred_submodules():
-    mods = ['numpy', 'scipy', 'sympy', 'pandas',
-            'networkx', 'statsmodels', 'matplotlib', 'sklearn',
-            'skimage', 'mpmath', 'os', 'PIL',
-            'OpenGL', 'array', 'audioop', 'binascii', 'cPickle',
-            'cStringIO', 'cmath', 'collections', 'datetime',
-            'errno', 'exceptions', 'gc', 'imageop', 'imp',
-            'itertools', 'marshal', 'math', 'mmap', 'msvcrt',
-            'nt', 'operator', 'parser', 'rgbimg', 'signal',
-            'strop', 'sys', 'thread', 'time', 'wx', 'xxsubtype',
-            'zipimport', 'zlib', 'nose', 'os.path']
-
-    submodules = []
-    for mod in mods:
-        submods = get_submodules(mod)
-        submodules += submods
-
-    actual = []
-    for submod in submodules:
-        try:
-            imp.find_module(submod)
-            actual.append(submod)
-        except ImportError:
-            pass
-
-    return actual
-
-
 class Workspace(object):
 
     M_PUBLISH_DIAGNOSTICS = 'textDocument/publishDiagnostics'
     M_APPLY_EDIT = 'workspace/applyEdit'
     M_SHOW_MESSAGE = 'window/showMessage'
-    PRELOADED_MODULES = get_preferred_submodules()
 
     def __init__(self, root_uri, endpoint):
         self._root_uri = root_uri
@@ -89,7 +39,7 @@ def _rope_project_builder(self, rope_config):
         if self.__rope is None or self.__rope_config != rope_config:
             rope_folder = rope_config.get('ropeFolder')
             self.__rope = Project(self._root_path, ropefolder=rope_folder)
-            self.__rope.prefs.set('extension_modules', self.PRELOADED_MODULES)
+            self.__rope.prefs.set('extension_modules', rope_config.get('extensionModules', []))
             self.__rope.prefs.set('ignore_syntax_errors', True)
             self.__rope.prefs.set('ignore_bad_imports', True)
         self.__rope.validate()

setup.py

@@ -80,6 +80,7 @@
             'jedi_signature_help = pyls.plugins.signature',
             'jedi_symbols = pyls.plugins.symbols',
             'mccabe = pyls.plugins.mccabe_lint',
+            'preload = pyls.plugins.preload_imports',
             'pycodestyle = pyls.plugins.pycodestyle_lint',
             'pydocstyle = pyls.plugins.pydocstyle_lint',
             'pyflakes = pyls.plugins.pyflakes_lint',

test/plugins/test_completion.py

@@ -1,9 +1,8 @@
 # Copyright 2017 Palantir Technologies, Inc.
 import os
-from rope.base.project import Project
 
 from pyls import uris
-from pyls.workspace import Document, get_preferred_submodules
+from pyls.workspace import Document
 from pyls.plugins.jedi_completion import pyls_completions as pyls_jedi_completions
 from pyls.plugins.rope_completion import pyls_completions as pyls_rope_completions
 
@@ -47,8 +46,6 @@ def test_jedi_completion():
 def test_rope_completion(config, workspace):
     # Over 'i' in os.path.isabs(...)
     com_position = {'line': 1, 'character': 15}
-    rope = Project(LOCATION)
-    rope.prefs.set('extension_modules', get_preferred_submodules())
     workspace.put_document(DOC_URI, source=DOC)
     doc = workspace.get_document(DOC_URI)
     items = pyls_rope_completions(config, workspace, doc, com_position)

vscode-client/package.json

@@ -75,6 +75,20 @@
                     "default": 15,
                     "description": "The minimum threshold that triggers warnings about cyclomatic complexity."
                 },
+                "pyls.plugins.preload.enabled": {
+                    "type": "boolean",
+                    "default": true,
+                    "description": "Enable or disable the plugin."
+                },
+                "pyls.plugins.preload.modules": {
+                    "type": "array",
+                    "default": null,
+                    "items": {
+                        "type": "string"
+                    },
+                    "uniqueItems": true,
+                    "description": "List of modules to import on startup"
+                },
                 "pyls.plugins.pycodestyle.enabled": {
                     "type": "boolean",
                     "default": true,
@@ -201,10 +215,19 @@
                     "default": true,
                     "description": "Enable or disable the plugin."
                 },
-                "pyls.rope.ropeFolder": {
+                "pyls.rope.extensionModules": {
                     "type": "string",
-                    "default": ".ropeproject",
+                    "default": null,
                     "description": "The name of the folder in which rope stores project configurations and data.  Pass `null` for not using such a folder at all."
+                },
+                "pyls.rope.ropeFolder": {
+                     "type": "array",
+                    "default": null,
+                    "items": {
+                        "type": "string"
+                    },
+                    "uniqueItems": true,
+                    "description": "Builtin and c-extension modules that are allowed to be imported and inspected by rope."
                 }
             }
         }