Question

Write the steps to construct syntax tree using the semantic rules. Construct a syntax tree for the following SDD :
Production rule
$E\rightarrow E_1+T$
$E\rightarrow E_1-T$
$E \rightarrow T$
$T\rightarrow (E)$
$T \rightarrow id$
$T \rightarrow num$
Semantic rules
E.node = new Node (‘+’, $E_1$.node, T.node)
E.node = new Node (‘–’, $E_1$.node, T.node)
E.node = T.node
T.node = E.node
T.node = new Leaf (id, id.entry)
T.node = new Leaf(num, num.val).

Answer 1

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