<s>
In	O
computer	B-General_Concept
science	I-General_Concept
,	O
a	O
simple	B-Application
precedence	I-Application
parser	I-Application
is	O
a	O
type	O
of	O
bottom-up	B-Application
parser	I-Application
for	O
context-free	O
grammars	O
that	O
can	O
be	O
used	O
only	O
by	O
simple	B-Language
precedence	I-Language
grammars	I-Language
.	O
</s>
<s>
The	O
implementation	O
of	O
the	O
parser	O
is	O
quite	O
similar	O
to	O
the	O
generic	O
bottom-up	B-Application
parser	I-Application
.	O
</s>
<s>
num	O
is	O
a	O
terminal	O
,	O
and	O
the	O
lexer	B-Application
parse	O
any	O
integer	O
as	O
num	O
;	O
E	O
represents	O
an	O
arithmetic	O
expression	O
,	O
T	O
is	O
a	O
term	O
and	O
F	O
is	O
a	O
factor	O
.	O
</s>
