Bottom-Up Parsers

$
Table(s)
…
ai
an
a1
a2
…
X
y
$
…
Pushdown:

Right parse = reverse sequence of rules used in the rightmost derivation of the tokenized source program
1)Operator-precedence
parser
• the least powerful, but simple &
easy-to-make
• Model of Bottom-Up parser:
• the most powerful
Input
string:
3/42