Introduction

Demonstration

RoadMap

Just edit the EBNF grammar according to ISO IEC 14977, check the automatic simplifiers you want to apply, and click "Update"

Grammar

expr = term, { ( '+' | '-' ) , term }; term = { factor, ( '*' | '/' ) }, factor; factor = integer | '(', expr, ')'; integer = [ '-' ], digit, { digit }; digit = '0' | '1' | '...' | '9' | 'A' | '...' | 'F';

Simplifiers

(Move your mouse over descriptions to get tooltips)

Remove null nodes from sequences

Remove duplicates in alternatives

Merge alternatives in alternatives

Merge common prefixes in alternatives

Merge common suffixes in alternatives

Merge common parts before repetitions

Merge common parts after repetitions

Update

Generated syntax diagrams