GeezerVison is showing github.com — graalpython/graalpython/lib-graalpython/java.py at master · SnoopInf/graalpython

Expand file tree

java.py

Copy path

More file actions

Latest commit

History

203 lines (181 loc) · 8.21 KB

java.py

Copy path

File metadata and controls

203 lines (181 loc) · 8.21 KB

Raw

Copy raw file

Download raw file

Open symbols panel

Edit and raw actions

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

# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

# The Universal Permissive License (UPL), Version 1.0

# Subject to the condition set forth below, permission is hereby granted to any

# person obtaining a copy of this software, associated documentation and/or

# data (collectively the "Software"), free of charge and under any and all

# copyright rights in the Software, and any and all patent rights owned or

# freely licensable by each licensor hereunder covering either (i) the

# unmodified Software as contributed to or provided by such licensor, or (ii)

# the Larger Works (as defined below), to deal in both

# (a) the Software, and

# (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if

# one is included with the Software each a "Larger Work" to which the Software

# is contributed by such licensors),

# without restriction, including without limitation the rights to copy, create

# derivative works of, display, perform, and distribute the Software and make,

# use, sell, offer for sale, import, export, have made, and have sold the

# Software and the Larger Work(s), and to sublicense the foregoing rights on

# either these or other terms.

# This license is subject to the following condition:

# The above copyright notice and either this complete permission notice or at a

# minimum a reference to the UPL must 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.

import sys

import _frozen_importlib

class JavaPackageLoader:

@staticmethod

def is_java_package(name):

try:

package = type("java.lang.Package")

return any(p.getName().startswith(name) for p in package.getPackages())

except KeyError:

if name in ("java.lang", "java.util"):

# Some well-known packages that we always allow

return True

if sys.flags.verbose:

from _warnings import warn

warn("Host lookup allowed, but java.lang.Package not available. Importing from Java cannot work.")

return False

if __graalpython__.jython_emulation_enabled:

@staticmethod

def _make_getattr(modname):

modname = modname + "."

def __getattr__(key, default=None):

if __graalpython__.host_import_enabled:

loadname = modname + key

if JavaPackageLoader.is_java_package(loadname):

return JavaPackageLoader._create_module(loadname)

else:

try:

return type(modname + key)

except KeyError:

pass

raise AttributeError(key)

return __getattr__

else:

@staticmethod

def _make_getattr(modname):

if modname.startswith("java."):

modname_wo = modname[len("java."):] + "."

else:

modname_wo = None

modname = modname + "."

def __getattr__(key, default=None):

try:

return type(modname + key)

except KeyError:

pass

if modname_wo:

try:

return type(modname_wo + key)

except KeyError:

pass

if JavaPackageLoader.is_java_package(modname + key):

return JavaPackageLoader._create_module(modname + key)

raise AttributeError(key)

return __getattr__

@staticmethod

def create_module(spec):

return JavaPackageLoader._create_module(spec.name)

@staticmethod

def _create_module(name):

newmod = _frozen_importlib._new_module(name)

newmod.__getattr__ = JavaPackageLoader._make_getattr(name)

newmod.__path__ = __path__

return newmod

@staticmethod

def exec_module(module):

pass

class JavaTypeLoader:

@staticmethod

def create_module(spec):

pass

if __graalpython__.jython_emulation_enabled:

@staticmethod

def exec_module(module):

sys.modules[module.__name__] = type(module.__name__)

else:

@staticmethod

def exec_module(module):

try:

sys.modules[module.__name__] = type(module.__name__)

except KeyError:

if module.__name__.startswith("java."):

sys.modules[module.__name__] = type(module.__name__[len("java."):])

else:

raise

class JavaImportFinder:

def is_type(self, name):

try:

type(name)

return True

except KeyError:

return False

if __graalpython__.jython_emulation_enabled:

def find_spec(self, fullname, path, target=None):

# Because of how Jython allows you to import classes that have not

# been loaded, yet, we need attempt to load types very eagerly.

if self.is_type(fullname):

# the fullname is already a type, let's load it

return _frozen_importlib.ModuleSpec(fullname, JavaTypeLoader, is_package=False)

else:

current_import_name = __graalpython__.current_import()

if current_import_name and self.is_type(current_import_name):

# We are currently handling an import that will lead to a

# Java type. The fullname is not a type itself, so it must

# be a package, not an enclosing class.

return _frozen_importlib.ModuleSpec(fullname, JavaPackageLoader, is_package=True)

else:

# We are not currently handling an import statement, and the

# fullname is not a type. Thus we can only check if it is a

# known package.

if JavaPackageLoader.is_java_package(fullname):

return _frozen_importlib.ModuleSpec(fullname, JavaPackageLoader, is_package=True)

else:

def find_spec(self, fullname, path, target=None):

if path and path == __path__:

if fullname.rpartition('.')[2].islower():

return _frozen_importlib.ModuleSpec(fullname, JavaPackageLoader, is_package=True)

else:

return _frozen_importlib.ModuleSpec(fullname, JavaTypeLoader, is_package=False)

if __graalpython__.jython_emulation_enabled:

class JarImportLoader:

def __init__(self, code):

self.code = code

def create_module(self, spec):

newmod = _frozen_importlib._new_module(spec.name)

newmod.__path__ = self.code.co_filename

return newmod

def exec_module(self, module):

exec(self.code, module.__dict__)

class JarImportFinder:

def __init__(self):

self.zipimport = __import__("zipimport")

def find_spec(self, fullname, path, target=None):

for path in sys.path:

if ".jar!" in path:

zipimport_path = path.replace(".jar!/", ".jar/").replace(".jar!", ".jar/")

zipimporter = self.zipimport.zipimporter(zipimport_path)

if zipimporter.find_spec(fullname):

if zipimporter.is_package(fullname):

return _frozen_importlib.ModuleSpec(fullname, JarImportLoader(zipimporter.get_code(fullname)), is_package=True)

else:

return _frozen_importlib.ModuleSpec(fullname, JarImportLoader(zipimporter.get_code(fullname)), is_package=False)

sys.meta_path.append(JarImportFinder())

sys.meta_path.append(JavaImportFinder())