<s>
Translational	B-Application
Backus	I-Application
–	I-Application
Naur	I-Application
Form	I-Application
(	O
TBNF	B-Application
or	O
Translational	O
BNF	O
)	O
refers	O
to	O
Backus	O
–	O
Naur	O
form	O
,	O
which	O
is	O
a	O
formal	O
grammar	O
notation	O
used	O
to	O
define	O
the	O
syntax	O
of	O
computer	O
languages	O
,	O
such	O
as	O
Algol	B-Language
,	O
Ada	B-Language
,	O
C++	B-Language
,	O
COBOL	B-Application
,	O
Fortran	B-Application
,	O
Java	B-Language
,	O
Perl	B-Language
,	O
Python	B-Language
,	O
and	O
many	O
others	O
.	O
</s>
<s>
TBNF	B-Application
goes	O
beyond	O
BNF	O
and	O
extended	O
BNF	O
(	O
EBNF	O
)	O
grammar	O
notation	O
because	O
it	O
not	O
only	O
defines	O
the	O
syntax	O
of	O
a	O
language	O
,	O
but	O
also	O
defines	O
the	O
structure	O
of	O
the	O
abstract	B-Data_Structure
syntax	I-Data_Structure
tree	I-Data_Structure
(	O
AST	O
)	O
to	O
be	O
created	O
in	O
memory	O
and	O
the	O
output	O
intermediate	O
code	O
to	O
be	O
generated	O
.	O
</s>
<s>
Thus	O
TBNF	B-Application
defines	O
the	O
complete	O
translation	O
process	O
from	O
input	O
source	O
code	O
to	O
intermediate	O
code	O
.	O
</s>
<s>
The	O
TBNF	B-Application
concept	O
was	O
first	O
published	O
in	O
April	O
2006	O
in	O
a	O
paper	O
at	O
SIGPLAN	O
Notices	O
,	O
a	O
special	O
interest	O
group	O
of	O
the	O
ACM	O
.	O
</s>
<s>
Here	O
is	O
a	O
sample	O
grammar	O
specified	O
in	O
TBNF	B-Application
:	O
</s>
