Resolving Bison Shift-Reduce Conflicts for If-Else Statements with Virtual Token Priority
selection_statement
: IF_P LPAREN expr RPAREN stmt_e ELSE_P stmt_e
| IF_P LPAREN expr RPAREN stmt_e %prec LOW_PRI
| SWITCH_P LPAREN expr RPAREN stmt_e
;
Bison may flag a shift/reduce conflict on token ELSE_P when parsing nested if-else structures like if (...) if (...) stmt • ELSE stmt. The parser cannot decide whether to shift ...
Posted on Sat, 08 Aug 2026 16:27:17 +0000 by sintax63
MySQL SQL Parser Architecture: Understanding Flex and Bison Integration
MySQL SQL Parser Architecture: Understanding Flex and Bison Integration
This technical overview examines how MySQL 8.0.34 implements SQL query parsing using bison-generated parser code. The analysis focuses on key implementation details and customizations that differ from standard bison usage patterns.
Grammar Definition Location
MySQL stores i ...
Posted on Sun, 10 May 2026 01:26:46 +0000 by Plagel