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# Copyright (c) Corporation for National Research Initiatives
import jast
import org, java
def makeAnys(args):
ret = []
for arg in args:
ret.append(arg.asAny())
return ret
def PyObjectArray(args):
aargs = makeAnys(args)
return Object(
jast.FilledArray("PyObject", aargs),
findType(java.lang.Class.forName("[Lorg.python.core.PyObject;")))
def makeStringArray(args):
return Object(
jast.StringArray(args),
findType(java.lang.Class.forName("[Ljava.lang.String;")))
class DelegateMethod:
def __init__(self, method, code):
self.method = method
self.code = code
def __call__(self, *args):
return apply(self.method, (self.code, )+args)
class Object:
def __init__(self, code, value):
self.code = code
self.value = value
def asAny(self):
return self.asa(org.python.core.PyObject)
def makeReference(self, code):
return Object(code, self.value)
def makeStatement(self):
return self.value.getStatement(self.code)
def mergeWith(self, other):
return Object(jast.Comment("oops"), Generic)
def __repr__(self):
return "Object(%s, %s)" % (self.code, self.value.__class__.__name__)
# delegate most methods to self.value using DelegateMethod
def __getattr__(self, name):
return DelegateMethod(getattr(self.value, name), self.code)
primitives = {java.lang.Integer.TYPE : 'py2int',
java.lang.Character.TYPE: 'py2char',
}
import JavaCall
class JavaObject:
def __init__(self, javaclass):
self.javaclass = javaclass
def isa(self, code, type):
if type.isAssignableFrom(self.javaclass):
return code
def asa(self, code, type, message=None):
ret = self.isa(code, type)
if ret is not None:
return ret
if type == org.python.core.PyObject:
return self.asAny(code)
def asAny(self, code):
return jast.InvokeStatic('Py', 'java2py', [code])
def getStatement(self, code):
return code
class JavaInteger(JavaObject):
def __init__(self):
JavaObject.__init__(self, java.lang.Integer.TYPE)
def asAny(self, code):
return jast.InvokeStatic('Py', 'newInteger', [code])
class JavaString(JavaObject):
def __init__(self):
JavaObject.__init__(self, java.lang.String)
def asAny(self, code):
return jast.InvokeStatic('Py', 'newString', [code])
PyObject_as_java_class = org.python.core.PyJavaClass.lookup(org.python.core.PyObject) # xxx temporary fix
class PyObject:
#I hate static fields for dynamic info!
attributes = {}
def getStatement(self, code):
return code
def asAny(self, code):
return code
def isa(self, code, type):
if type == org.python.core.PyObject:
return code
def asa(self, code, type, message=None):
ret = self.isa(code, type)
if ret is not None:
return ret
if primitives.has_key(type):
return jast.InvokeStatic('Py', primitives[type], [code])
if type == java.lang.Boolean.TYPE:
return jast.Invoke(code, '__nonzero__', [])
tname = type.__name__
tojava = jast.InvokeStatic('Py', 'tojava',
[code, jast.GetStaticAttribute(tname,'class')])
return jast.Cast(tname, tojava)
def print_line(self, code):
return jast.InvokeStatic("Py", "println", [self.asAny(code)])
def print_continued(self, code):
return jast.InvokeStatic("Py", "printComma", [self.asAny(code)])
def print_line_to(self, file, code=None):
if code is None:
return jast.InvokeStatic("Py", "printlnv", [self.asAny(file)])
else:
return jast.InvokeStatic("Py", "println", [self.asAny(file),
self.asAny(code)])
def print_continued_to(self, file, code):
return jast.InvokeStatic("Py", "printComma", [self.asAny(file),
self.asAny(code)])
def domethod(self, code, name, *args):
meth = getattr(PyObject_as_java_class, name) # xxx temporary fix
code, type = JavaCall.call(meth, Object(code, self), args)
return Object(code, findType(type))
def nonzero(self, code):
return self.domethod(code, "__nonzero__").asa(java.lang.Boolean.TYPE)
def unop(self, code, op):
return self.domethod(code, op)
def compop(self, code, op, y):
return self.domethod(code, op, y)
binop = compop
def augbinop(self, code, op, y):
return self.domethod(code, op, y)
def igetitem(self, code, index):
return self.domethod(code, "__getitem__",
Object(jast.IntegerConstant(index), IntType))
def getslice(self, code, start, stop, step):
#print start, stop, step
return self.domethod(code, "__getslice__", start, stop, step)
def delslice(self, code, start, stop, step):
return self.domethod(code, "__delslice__",
start, stop, step).getStatement()
def setslice(self, code, start, stop, step, value):
return self.domethod(code, "__setslice__",
start, stop, step, value).getStatement()
def getitem(self, code, index):
return self.domethod(code, "__getitem__", index)
def delitem(self, code, index):
return self.domethod(code, "__delitem__", index).getStatement()
def setitem(self, code, index, value):
return self.domethod(code, "__setitem__", index, value).getStatement()
def getattr(self, code, name):
if not PyObject.attributes.has_key(name):
PyObject.attributes[name] = None
name = Object(jast.StringConstant(name), StringType)
return self.domethod(code, "__getattr__", name)
def delattr(self, code, name):
name = Object(jast.StringConstant(name), StringType)
return self.domethod(code, "__delattr__", name).getStatement()
def setattr(self, code, name, value):
PyObject.attributes[name] = value
name = Object(jast.StringConstant(name), StringType)
ret = self.domethod(code, "__setattr__", name, value)
#print ret
return ret.getStatement()
def call(self, code, args, keyargs=None):
nargs = len(args)
if keyargs is None or len(keyargs) == 0:
if nargs == 0:
return self.domethod(code, "__call__")
elif nargs == 1:
return self.domethod(code, "__call__", args[0])
elif nargs == 2:
return self.domethod(code, "__call__", args[0], args[1])
elif nargs == 3:
return self.domethod(code, "__call__",
args[0], args[1], args[2])
else:
return self.domethod(code, "__call__", PyObjectArray(args))
else:
keynames = []
for name, value in keyargs:
PyObject.attributes[name] = value
keynames.append(name)
args.append(value)
return self.domethod(code, "__call__", PyObjectArray(args),
makeStringArray(keynames))
def call_extra(self, code, args, keyargs, starargs, kwargs):
keynames = []
for name, value in keyargs:
PyObject.attributes[name] = value
keynames.append(name)
args.append(value)
if not starargs:
starargs = Object(jast.Null, self)
if not kwargs:
kwargs = Object(jast.Null, self)
return self.domethod(code, "_callextra",
PyObjectArray(args),
makeStringArray(keynames),
starargs,
kwargs)
def invoke(self, code, name, args, keyargs):
if keyargs:
return self.getattr(code, name).call(args, keyargs)
name = Object(jast.StringConstant(name), StringType)
nargs = len(args)
if nargs == 0:
return self.domethod(code, "invoke", name)
elif nargs == 1:
return self.domethod(code, "invoke", name, args[0])
elif nargs == 2:
return self.domethod(code, "invoke", name, args[0], args[1])
else:
return self.domethod(code, "invoke", name, PyObjectArray(args))
def doraise(self, code, exc_value=None, exc_traceback=None):
args = [code]
if exc_value is not None:
args.append(exc_value.asAny())
if exc_traceback is not None:
args.append(exc_traceback.asAny())
return jast.Throw(jast.InvokeStatic("Py", "makeException", args))
def mergeWith(self, other):
# In simplest world, all types can be merged with each other
return self
def makeTemp(self, frame):
return PyObject(jast.Set(frame.gettemp(self.type),
self.asAny()), self.parent)
def freeTemp(self, frame):
frame.freetemp(self.value)
types = {}
def findType(type):
if types.has_key(type):
return types[type]
if type == java.lang.Integer.TYPE:
ret = JavaInteger()
elif type == java.lang.String:
ret = JavaString()
elif type == org.python.core.PyObject:
ret = PyObject()
elif type == org.python.core.PyString:
ret = PyObject()
else:
ret = JavaObject(type)
types[type] = ret
return ret
Generic = findType(org.python.core.PyObject)
IntType = findType(java.lang.Integer.TYPE)
StringType = findType(java.lang.String)
if __name__ == '__main__':
foo = Object(jast.Identifier("foo"), Generic)
one = Object(jast.IntegerConstant(1), IntType)
hello = Object(jast.StringConstant("hello"), StringType)
print foo, one, hello
print foo.binop("add", foo)
print foo.binop("add", one)
print foo.binop("add", hello)
print foo.nonzero()
print foo.getitem(foo)
print foo.getitem(one)
print foo.call([one, hello])
print foo.call([one, hello, foo])
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