Pasting link of info doc https://www.gnu.org/software/bison/manual/html_node/How-Precedence.html#How-Precedence
> On 03-Feb-2019, at 12:20 PM, <an...@aakhare.in> <an...@aakhare.in> wrote: > > Hello, > in info doc of bison, it is mentioned that rule gets its precendence from > last terminal symbol. > pasted below: > The first effect of the precedence declarations is to assign precedence > levels to the terminal symbols declared. The second effect is to assign > precedence levels to certain rules: each rule gets its precedence from the > last terminal symbol mentioned in the components. > > For below example, how the parsing will happen if above is the case: > > nonterm1 : nonterm2 > | nonterm1 term1 nonterm3 nonterm4 > | nonterm1 term2 nonterm5 nonterm6 > > One more example: > nonterm1 : nonterm2 nonterm3 > | nonterm1 term1 nonterm2 nonterm3 > | nonterm1 term2 nonterm2 nonterm3 > > Consider first example. First parser will consume nonterm2 then for term1 > rule, nonterm1 will hold nonterm2 value and term2 higher precedence than > term1, parser have to pass value to nonterm1 in term2 rule but it is invalid > if we provide term1 precedence to term1 rule because as the statement > suggests, last terminal token gives rule precedence. Assigning value of > "nonterm3 nonterm4" to nonterm1 in term2 rule is not possible or is it? > Value is for term or nonterm but not partial set of symbols in rule. is it > right? > Does the info doc says last terminal symbol as last but one symbol which if > it is terminal? > > Regards, > Anand _______________________________________________ help-bison@gnu.org https://lists.gnu.org/mailman/listinfo/help-bison