1 1 vote Every unambiguous grammar is LR(0) grammar? Compiler Design compiler-design lr-parser + – samarpita 2.4k views answer comment Share Follow Print 0 reply Please log in or register to add a comment.
1 1 vote No, Every unambiguous grammar need not be LR(0) grammar. But the converse is true means every LR(0) grammar is unambiguous.LR(0) grammar is a proper subset of SLR(1) grammar and both are unambiguous grammar only. So we can conclude there exist some unambiguous grammar which are SLR(1) but not LR(0). anon1 answered Nov 18, 2021 anon1 comment Share Follow 0 reply Please log in or register to add a comment.
1 1 vote Hope this clarify the things :) anupam_12 answered Feb 3, 2022 anupam_12 comment Share Follow 0 reply Please log in or register to add a comment.
0 0 votes No, this is not true. As, all LR(1) grammars are unambiguous, and some LR(1) grammars are not LR(0) , so this implies that some unambiguous LR(1) grammars are not LR(0). Ankita87077 answered Nov 18, 2021 Ankita87077 comment Share Follow 0 reply Please log in or register to add a comment.
0 0 votes @samarpita No, this is not true... LR parsing is not a useful technique for human languages with ambiguous grammars that depend on the interplay of words... Human languages are better handled by ... 1. https://gatecse.in/lr-parsing-part-2-language-of-ll-and-lr-grammars 2. https://gateoverflow.in/91352/Can-lr-1-parser-parse-any-context-free-grammar-language 3. https://gateoverflow.in/105785/Ll-k-grammars 4. https://web.stanford.edu/class/archive/cs/cs143/cs143.1128/handouts/090%20Top-Down%20Parsing.pdf 5. https://en.wikipedia.org/wiki/LR_parser Awe111 answered Nov 18, 2021 Awe111 comment Share Follow 0 reply Please log in or register to add a comment.
