Calculator
Integer arithmetic, precedence by grammar structure, parentheses, and a handwritten lexer.
Open calculator.y →EXECUTABLE GRAMMAR GALLERY
Examples that prove every rule.
Every maintained grammar keeps accept and reject cases in its source with
%test. CI runs those cases in isolated processes and requires every
production to reduce at least once.
JSON
Generated lexer rules, conversion actions, recursive objects and arrays, and every JSON value.
Open json.y →CSV
Quoted fields, escaped quotes, row recursion, and generated newline-aware tokenization.
Open csv.y →INI
Line-oriented scanning, sections, entries, blank lines, and a nested Ruby Hash result.
Open ini.y →Tiny language
A Lox-scale starting point with variables, assignment, print statements, expressions, and AST execution.
Open tiny_language.y →Use the same gate
Add source examples to a grammar and run
ibex test --mode=extended --coverage=100 grammar.y.