bpython/bpython/importcompletion.py at 0.15-dev · optionalg/bpython · GitHub

History

214 lines (182 loc) · 7.01 KB

Raw

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

# The MIT License

# Permission is hereby granted, free of charge, to any person obtaining a copy

# of this software and associated documentation files (the "Software"), to deal

# in the Software without restriction, including without limitation the rights

# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

# copies of the Software, and to permit persons to whom the Software is

# furnished to do so, subject to the following conditions:

# The above copyright notice and this permission notice shall be included in

# all copies or substantial portions of the Software.

# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

# THE SOFTWARE.

from bpython._py3compat import py3

from bpython.line import current_word, current_import, \

current_from_import_from, current_from_import_import

import imp

import os

import sys

import warnings

from warnings import catch_warnings

from six.moves import filter

if sys.version_info[0] == 3 and sys.version_info[1] >= 3:

import importlib.machinery

SUFFIXES = importlib.machinery.all_suffixes()

else:

SUFFIXES = [suffix for suffix, mode, type in imp.get_suffixes()]

# The cached list of all known modules

modules = set()

fully_loaded = False

def try_decode_module(module, encoding):

"""Try to decode module names."""

if not py3 and not isinstance(module, unicode):

try:

return module.decode(encoding)

except UnicodeDecodeError:

# Not importable anyway, ignore it

return None

return module

def module_matches(cw, prefix=''):

"""Modules names to replace cw with"""

full = '%s.%s' % (prefix, cw) if prefix else cw

matches = (name for name in modules

if (name.startswith(full) and

name.find('.', len(full)) == -1))

if prefix:

return set(match[len(prefix)+1:] for match in matches)

else:

return set(matches)

def attr_matches(cw, prefix='', only_modules=False):

"""Attributes to replace name with"""

full = '%s.%s' % (prefix, cw) if prefix else cw

module_name, _, name_after_dot = full.rpartition('.')

if module_name not in sys.modules:

return set()

module = sys.modules[module_name]

if only_modules:

matches = (name for name in dir(module)

if (name.startswith(name_after_dot) and

'%s.%s' % (module_name, name)) in sys.modules)

else:

matches = (name for name in dir(module)

if name.startswith(name_after_dot))

module_part, _, _ = cw.rpartition('.')

if module_part:

matches = ('%s.%s' % (module_part, m) for m in matches)

generator = (try_decode_module(match, 'ascii') for match in matches)

return set(filter(lambda x: x is not None, generator))

def module_attr_matches(name):

"""Only attributes which are modules to replace name with"""

return attr_matches(name, prefix='', only_modules=True)

def complete(cursor_offset, line):

"""Construct a full list of possibly completions for imports."""

tokens = line.split()

if 'from' not in tokens and 'import' not in tokens:

return None

result = current_word(cursor_offset, line)

if result is None:

return None

from_import_from = current_from_import_from(cursor_offset, line)

if from_import_from is not None:

import_import = current_from_import_import(cursor_offset, line)

if import_import is not None:

# `from a import <b|>` completion

matches = module_matches(import_import[2], from_import_from[2])

matches.update(attr_matches(import_import[2],

from_import_from[2]))

else:

# `from <a|>` completion

matches = module_attr_matches(from_import_from[2])

matches.update(module_matches(from_import_from[2]))

return matches

cur_import = current_import(cursor_offset, line)

if cur_import is not None:

# `import <a|>` completion

matches = module_matches(cur_import[2])

matches.update(module_attr_matches(cur_import[2]))

return matches

else:

return None

def find_modules(path):

"""Find all modules (and packages) for a given directory."""

if not os.path.isdir(path):

# Perhaps a zip file

return

try:

filenames = os.listdir(path)

except EnvironmentError:

filenames = []

for name in filenames:

if not any(name.endswith(suffix) for suffix in SUFFIXES):

# Possibly a package

if '.' in name:

continue

elif os.path.isdir(os.path.join(path, name)):

# Unfortunately, CPython just crashes if there is a directory

# which ends with a python extension, so work around.

continue

for suffix in SUFFIXES:

if name.endswith(suffix):

name = name[:-len(suffix)]

break

if py3 and name == "badsyntax_pep3120":

# Workaround for issue #166

continue

try:

with catch_warnings():

warnings.simplefilter("ignore", ImportWarning)

fo, pathname, _ = imp.find_module(name, [path])

except (ImportError, IOError, SyntaxError):

continue

except UnicodeEncodeError:

# Happens with Python 3 when there is a filename in some

# invalid encoding

continue

else:

if fo is not None:

fo.close()

else:

# Yay, package

for subname in find_modules(pathname):

if subname != '__init__':

yield '%s.%s' % (name, subname)

yield name

def find_all_modules(path=None):

"""Return a list with all modules in `path`, which should be a list of

directory names. If path is not given, sys.path will be used."""

if path is None:

modules.update(sys.builtin_module_names)

path = sys.path

for p in path:

if not p:

p = os.curdir

for module in find_modules(p):

module = try_decode_module(module, sys.getfilesystemencoding())

if module is None:

continue

modules.add(module)

yield

def find_coroutine():

global fully_loaded

if fully_loaded:

return None

try:

next(find_iterator)

except StopIteration:

fully_loaded = True

return True

def reload():

"""Refresh the list of known modules."""

modules.clear()

for _ in find_all_modules():

pass

find_iterator = find_all_modules()

bpython/bpython/importcompletion.py at 0.15-dev · optionalg/bpython · GitHub

Expand file tree

Breadcrumbs

importcompletion.py

Latest commit

History

Breadcrumbs

importcompletion.py

File metadata and controls