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"""generates code for binops in PyObject and for all "simple" ops in PyInstance"""
binops = \
[('add', '+'), ('sub', '-'), ('mul', '*'), ('div', '/'),
('floordiv', '//'), ('truediv', '/'),
('mod', '%'), ('divmod', 'divmod'), ('pow', '**'),
('lshift', '<<'), ('rshift', '>>'), ('and', '&'), ('or', '|'), ('xor', '^')]
#
# this bit is superseded by src/templates/make_binops.py
#
## template = """\
## /**
## * Equivalent to the standard Python __%(name)s__ method
## * @param other the object to perform this binary operation with
## * (the right-hand operand).
## * @return the result of the %(name)s, or null if this operation
## * is not defined
## **/
## public PyObject __%(name)s__(PyObject other) { %(function)s }
## /**
## * Equivalent to the standard Python __r%(name)s__ method
## * @param other the object to perform this binary operation with
## * (the left-hand operand).
## * @return the result of the %(name)s, or null if this operation
## * is not defined.
## **/
## public PyObject __r%(name)s__(PyObject other) { %(rfunction)s }
## /**
## * Equivalent to the standard Python __i%(name)s__ method
## * @param other the object to perform this binary operation with
## * (the right-hand operand).
## * @return the result of the %(name)s, or null if this operation
## * is not defined
## **/
## public PyObject __i%(name)s__(PyObject other) { return _%(name)s(other); }
## /**
## * Implements the Python expression <code>this %(op)s other</code>
## * @param other the object to perform this binary operation with.
## * @return the result of the %(name)s.
## * @exception PyTypeError if this operation can't be performed
## * with these operands.
## **/
## public final PyObject _%(name)s(PyObject o2) {%(divhook)s
## PyObject x = __%(name)s__(o2);
## if (x != null)
## return x;
## x = o2.__r%(name)s__(this);
## if (x != null)
## return x;
## throw Py.TypeError(
## "__%(name)s__ nor __r%(name)s__ defined for these operands");
## }
## """
## fp = open('binops.txt', 'w')
## fp.write(' // Generated by make_binops.py (Begin)\n\n')
## for name, op in binops:
## rfunction = function = 'return null;'
## divhook = ""
## if name == 'pow':
## function = 'return __pow__(other, null);'
## if name == 'div':
## divhook = '''
## if (Options.Qnew)
## return _truediv(o2);'''
## fp.write(template % {
## 'name':name,
## 'op':op,
## 'function':function,
## 'rfunction':rfunction,
## 'divhook':divhook
## })
## fp.write(' // Generated by make_binops.py (End)\n\n')
## fp.close()
fp = open('binopsi.txt', 'w')
fp.write(' // Generated by make_binops.py\n\n')
comment = """\
/**
* Implements the __%(name)s__ method by looking it up
* in the instance's dictionary and calling it if it is found.
**/
"""
template1 = """\
@Override
public %(ret)s __%(name)s__() {
return instance___%(name)s__();
}
""" + comment + """\
@ExposedMethod
final %(ret)s instance___%(name)s__() {
PyObject ret = invoke("__%(name)s__");
if (%(checks)s)
return %(cast)sret;
throw Py.TypeError("__%(name)s__() should return a %(retname)s");
}
"""
template2 = """\
@Override
public PyObject __%(name)s__() {
return instance___%(name)s__();
}
""" + comment + """\
@ExposedMethod
public PyObject instance___%(name)s__() {
return invoke("__%(name)s__");
}
"""
string = 'PyString', 'string'
ops = [('hex', string), ('oct', string),
('int', ('PyObject', 'int'), ('PyLong', 'PyInteger')),
('float', ('PyFloat', 'float')),
('long', ('PyObject', 'long'), ('PyLong', 'PyInteger')),
('complex', ('PyComplex', 'complex')),
('pos', None), ('neg', None), ('abs', None), ('invert', None)]
fp.write(' // Unary ops\n\n')
for item in ops:
checks = None
if len(item) == 2:
name, ret = item
else:
name, ret, checks = item
if ret is None:
fp.write(template2 % {'name':name})
else:
ret, retname = ret
if checks:
checks = ' || '.join(['ret instanceof %s' % check for check in checks])
else:
checks = 'ret instanceof %s' % ret
if ret == 'PyObject':
cast = ''
else:
cast = '(%s)' % ret
fp.write(template1 % {'name':name, 'ret':ret, 'retname':retname,
'checks':checks, 'cast':cast})
template = """\
@Override
public PyObject __%(name)s__(PyObject o) {
return instance___%(name)s__(o);
}
""" + comment + """\
@ExposedMethod(type = MethodType.BINARY)
public PyObject instance___%(name)s__(PyObject o) {
Object ctmp = __coerce_ex__(o);
if (ctmp == null || ctmp == Py.None)
return invoke_ex("__%(name)s__", o);
else {
PyObject o1 = ((PyObject[])ctmp)[0];
PyObject o2 = ((PyObject[])ctmp)[1];
if (this == o1) {
// Prevent recusion if __coerce__ return self
return invoke_ex("__%(name)s__", o2);
}
else {
ThreadState ts = Py.getThreadState();
if (ts.recursion_depth++ > ts.systemState.getrecursionlimit())
throw Py.RuntimeError("maximum recursion depth exceeded");
try {
return %(function)s;
} finally {
--ts.recursion_depth;
}
}
}
}
"""
template2 = """\
@Override
public PyObject __%(name)s__(PyObject o) {
return instance___%(name)s__(o);
}
""" + comment + """\
@ExposedMethod(type = MethodType.BINARY)
public PyObject instance___%(name)s__(PyObject o) {
PyObject ret = invoke_ex("__%(name)s__", o);
if (ret != null)
return ret;
return super.__%(name)s__(o);
}
"""
fp.write(' // Binary ops\n\n')
for name, op in binops:
fp.write(template % {'name':name, 'function':'o1._%s(o2)' % name })
fp.write(template % {'name':'r'+name, 'function':'o2._%s(o1)' % name })
if name != 'divmod':
fp.write(template2 % {'name':'i'+name
})
fp.close()
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