About


      
This project is a simple math interpeter. It supports expressions involving additon ("+"), subtraction ("-"), multiplication ("*"), division ("/"), brackets ("(" and ")"), and both floating point and integer arithmetic. The grammar for the interpreter, in EBNF, is:


      

        unary = ("-", unary) | int | float | ("(", expression, ")"); 

        factor = (factor, ("*" | "/"), unary) | unary; 

        expression = (expression, ("+" | "-"), factor) | factor;
      


      

        Or graphically,
      


      

        Visual description of EBNF above
        
Generated with Vincent Jacques' DrawGrammar

      


      

        The interpeter is implemented in around 600 lines of C, and then compiled to WASM with Emscripten to run on the web. The source code can be found at https://github.com/liam-ilan/math-interpreter.