def __init__(self, interp=None):
self.__dict__ = self.__shared_state
if not self._interp:
from pure.cpure import PureEnv
self._interp = PureEnv()
self._loaded = True
elif interp:
self._interp = interp
self._loaded = True
class PureInterface(Borg):
__shared_state = dict(
_loaded = False,
_interp = None,
symbols = {},
libs = (),
)
def __init__(self, interp=None):
self.__dict__ = self.__shared_state
if not self._interp:
from pure.cpure import PureEnv
self._interp = PureEnv()
self._loaded = True
elif interp:
self._interp = interp
self._loaded = True
def eval(self, s):
return self._interp.eval(s)
def active(self):
return self._loaded
def libraries(self):
if self.active():
return self.libs
else:
raise Exception('No active interface.')
def use(self, package, library):
if self.active():
if (package,library) not in self.libs:
# Paths are relative to the /wise/ directory
print 'Importing Pure library ' + '/'.join([package, library])
result = self.eval('using ' + '::'.join([package, library]))
self.libs += ((package,library),)
if not result:
raise Exception('Could not import (%s,%s)' %
(package, library))
else:
return True
else:
raise Exception('No active interface.')
# Really no reason to call this, and quite a few reasons
# *not* to since directly interacting with the interpreter
# can cause segfaults.
def get_interp(self):
if self.active():
return self._interp
return self._interp or Exception('No active interface')
# Modeled after rpy2's interface
def __getitem__(self, key):
if self.active():
try:
return self.symbols[key]
except KeyError:
raise Exception('No Pure symbol: %s' % key)
else:
raise Exception('No active interface')
def jit_compile(self):
if self.active():
self._interp.compile_interp()
else:
raise Exception('No active interface')