Question: Design an attribute grammar recognizing the language consisting of binary strings containing the same number of O's and 1's. Explain your construction. Hint: Modify the

Design an attribute grammar recognizing the language consisting of binary strings

Design an attribute grammar recognizing the language consisting of binary strings containing the same number of O's and 1's. Explain your construction. Hint: Modify the attribute grammar of problem below Basic results from automata theory tell us that the language L anbnc"-6, abc, aabbcc, aaabbbccc, is not context free. It can be captured, however, using an attribute grammar. Give an underlying CFG and a set of attribute rules that associates a Boolean attribute ok with the root R of each parse tree, such that R.ok = true if and only if the string corresponding to the fringe of the tree is in L. Answer: GAs Bs C.s Asia As2 D G.ok :(As.val Bs.val Cs.val) Asi .Val := As2.Val + 1 As.val:0 D Bs.val:0 Cs.val0 D Bsi.val: Bs2.val 1 Bs D Csi.val: Cs2.val 1

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