src.templates.make_binops.py Maven / Gradle / Ivy
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Jython is an implementation of the high-level, dynamic, object-oriented
language Python written in 100% Pure Java, and seamlessly integrated with
the Java platform. It thus allows you to run Python on any Java platform.
"""generates code for binops in PyObject and for all "simple" ops in PyInstance"""
from java_templating import JavaTemplate as jt, concat, csub, strfy
binops = \
[('add', '+'), ('sub', '-'), ('mul', '*'), ('div', '/'),
('floordiv', '//'), ('truediv', '/'),
('mod', '%'), ('divmod', 'divmod'), ('pow', '**'),
('lshift', '<<'), ('rshift', '>>'), ('and', '&'), ('or', '|'), ('xor', '^')]
template = jt("""
`csub`(
/**
* 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 `concat`(__,`name, __)(PyObject other) { `function; }
`csub`(
/**
* 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 `concat`(__r,`name, __)(PyObject other) { `rfunction; }
`csub`(
/**
* 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 i%(name)s, or null if this operation
* is not defined
**/
);
public PyObject `concat`(__i, `name, __)(PyObject other) { `ifunction; }
`csub`(
/**
* Implements the Python expression this %(bareop)s o2
* @param o2 the object to perform this binary operation with.
* @return the result of the %(name)s.
* @exception Py.TypeError if this operation can't be performed
* with these operands.
**/
);
public final PyObject `concat`(_, `name)(PyObject o2) {
`divhook;
PyType t1 = this.getType();
PyType t2 = o2.getType();
if (t1 == t2 || t1.builtin && t2.builtin) {
return this.`concat`(_basic_, `name)(o2);
}
return _binop_rule(t1, o2, t2, `strfy`(`concat`(__,`name,__)),
`strfy`(`concat`(__r,`name,__)),
`op);
}
`csub`(
/**
* Implements the Python expression this %(bareop)s o2
* when this and o2 have the same type or are builtin types.
* @param o2 the object to perform this binary operation with.
* @return the result of the %(name)s.
* @exception Py.TypeError if this operation can't be performed
* with these operands.
**/
);
final PyObject `concat`(_basic_, `name)(PyObject o2) {
PyObject x = `concat`(__,`name,__)(o2);
if (x != null) {
return x;
}
x = o2.`concat`(__r,`name,__)(this);
if (x != null) {
return x;
}
throw Py.TypeError(_unsupportedop(`op, o2));
}
`csub`(
/**
* Implements the Python expression this %(bareop)s= o2
* @param o2 the object to perform this inplace binary
* operation with.
* @return the result of the i%(name)s.
* @exception Py.TypeError if this operation can't be performed
* with these operands.
**/
);
public final PyObject `concat`(_i, `name)(PyObject o2) {
`idivhook;
PyType t1 = this.getType();
PyType t2 = o2.getType();
if (t1 == t2 || t1.builtin && t2.builtin) {
return this.`concat`(_basic_i, `name)(o2);
}
PyObject impl = t1.lookup(`strfy`(`concat`(__i,`name,__)));
if (impl != null) {
PyObject res = impl.__get__(this, t1).__call__(o2);
if (res != Py.NotImplemented) {
return res;
}
}
return _binop_rule(t1, o2, t2, `strfy`(`concat`(__,`name,__)),
`strfy`(`concat`(__r,`name,__)),
`op);
}
`csub`(
/**
* Implements the Python expression this %(bareop)s= o2
* when this and o2 have the same type or are builtin types.
* @param o2 the object to perform this inplace binary
* operation with.
* @return the result of the i%(name)s.
* @exception Py.TypeError if this operation can't be performed
* with these operands.
**/
);
final PyObject `concat`(_basic_i, `name)(PyObject o2) {
PyObject x = `concat`(__i,`name,__)(o2);
if (x != null) {
return x;
}
return this.`concat`(_basic_, `name)(o2);
}
""", bindings={'csub': csub, 'concat': concat,
'strfy': strfy}, start='ClassBodyDeclarations')
def main():
fp = open('binops.txt', 'w')
fp.write(' // Generated by make_binops.py (Begin)\n\n')
for name, op in binops:
ifunction = rfunction = function = jt('return null;')
divhook = jt("")
idivhook = jt("")
if name == 'pow':
function = jt('return __pow__(other, null);')
if name == 'div':
hook = '''
if (Options.Qnew)
return _%struediv(o2);'''
divhook = jt(hook % '')
idivhook = jt(hook % 'i')
template.tnaked().texpand(
{
'name': jt(name),
'op': jt('"%s"' % op),
'bareop': op,
'function':function,
'rfunction':rfunction,
'ifunction':ifunction,
'divhook':divhook,
'idivhook':idivhook
}, output=fp, nindent=1)
fp.write('\n')
fp.write('\n')
fp.write(' // Generated by make_binops.py (End)\n\n')
fp.close()
if __name__ == '__main__':
main()