L-attributed grammar

Not a L-attributed grammar if some attribute depends to the right (only to the left)

S-attributed grammar is

L-attributed grammar

LHS 동일할 때는 terminal, nonterminal RHS LHS 나오는 순서 같아야 하고

LHS 다를 때는 왼쪽의 거나 LHS에 의존해야 한다

L-attributed grammar - Wikipedia

L-attributed grammars are a special type of attribute grammars. They allow the attributes to be evaluated in one depth-first left-to-right traversal of the abstract syntax tree. As a result, attribute evaluation in L-attributed grammars can be incorporated conveniently in top-down parsing.

https://en.wikipedia.org/wiki/L-attributed_grammar

L-attributed grammar - Wikipedia

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