Appendix A  Reserved Words

• Introduction
• Reserved Words
• Suggested Things To Avoid

A.1  Introduction

This appendix lists SIDL’s reserved words. Other words and constructs that are problematic in particular language bindings are also listed.

A.2  Reserved Words

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Table A.1: SIDL Reserved Words

RESERVED WORD	ROLE
abstract	optional modifier for class
array	datatype
bool	builtin datatype
char	builtin datatype
class	user defined datatype
copy	argument modifer
dcomplex	builtin datatype
double	builtin datatype
enum	user defined datatype
extends	inheritance mode
fcomplex	builtin datatype
final	package and method modifier
float	builtin datatype
implements	inheritance mode
implements-all	inheritance mode
import	bring other packages into current scope
in	argument mode
inout	argument mode
int	builtin datatype
interface	user defined datatype
local	method modifier
long	builtin datatype
nonblocking	method modifier
oneway	method modifier
opaque	builtin datatype
out	argument mode
package	scoping construct
static	method modifier
string	builtin datatype
throws	exception declaration
version	assign version number to package
void	declares method as not returning a type

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Table A.1 lists all the words that are part of the SIDL grammar and cannot be used as a package, enum, interface, class, or argument name.

A.3  Suggested Things To Avoid

Since SIDL maps onto many other languages there are a great number of words and constructs that are harmless in SIDL, but cause great trouble in generated language bindings. We list known problems in Table A.2.

In addition, the following should be avoided:

• Reserved words in all of the supported languages. This is a long list only some of which appear here.
• Methods with the same name as a class (this is a constructor in C++).
• Packages, Classes, Interfaces, Methods or Arguments that differ only by case. Not all languages are case sensitive but, since Babel’s focus is language interoperability, Babel must make allowances.

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Table A.2: Other words/constructs to avoid

WORD	C	C++	Java	Python	word	C	C++	Java	Python
abstract			X		lambda				X
and		X		X	long	X	X	X
and_eq		X			mutable		X
asm	X	X			namespace		X
assert				X	native			X
auto	X	X			new		X	X
bitand		X			not		X		X
bitor		X			not_eq		X
bool		X			null			X
boolean			X		operator		X
break	X	X	X	X	or		X		X
case	X	X	X		or_eq		X
catch		X	X		package			X
char	X	X	X		pass				X
class		X	X		print				X
compl		X			private		X	X
const	X	X	X		protected		X	X
const_cast		X			public		X	X
continue	X	X	X	X	raise				X
def				X	register	X	X
default	X	X	X		reinterpret_cast		X
del				X	return	X	X	X	X
delete		X			short	X	X	X
do	X	X	X		signed	X	X
double	X	X	X		sizeof	X	X
dynamic_cast		X			static	X	X	X
elif				X	static_cast		X
else	X	X	X	X	strictfp			X
enum	X	X			struct	X	X
except				X	super			X
exec				X	switch	X	X	X
explicit		X			synchronized			X
export		X			template		X
extends			X		this		X	X
extern	X	X			throw		X	X
false		X	X		throws			X
final			X		transient			X
finally			X	X	true		X	X
float	X	X	X		try		X	X	X
for	X	X	X	X	typedef	X	X
friend		X			typeid		X
from				X	typename		X
global				X	union	X	X
goto	X	X	X		unsigned	X	X
if	X	X	X	X	using		X
implements			X		virtual		X
import			X		void	X	X	X
inline		X			volatile	X	X	X
instanceof			X		wchar_t		X
int	X	X	X		while	X	X	X	X
interface			X		xor		X
is				X	xor_eq		X

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