> On 1 May 2016, at 13:14, Matthias Simon <m...@5nord.de> wrote: > I have a grammar with some conflicts between the return statement and the > declaration (due to missing semicolons). I thought I could resolve this issue > by giving the primary-production in expr a context-dependent precedence, but > it had no effect on the conflicts. I still have a conflict for the FOO and > the BAR token. Can somebody explain to me why?
Try the grammar below. In short, only shift-reduce conflicts can be resolved, and only when they are close enough in the grammar - two tokens appearing in the same state around the parsing dot in the .output file. If that is not the case, the grammar must be rewritten, or using GLR. %token ID %token FOO %token BAR %token RETURN %left '+' %left '*' %% stmts: stmt | stmts stmt ; stmt: RETURN | expr RETURN ; expr: primary | expr '+' expr | expr '*' expr ; primary: ID | FOO | BAR ; %% _______________________________________________ help-bison@gnu.org https://lists.gnu.org/mailman/listinfo/help-bison
