Facc

Facc AST

• C++C#C++C#

NuGetFacc

AST

var _grammar = @"   // 
                    // 
num                 ::= [0-9]+
                    // |
op2_sign            ::= '+' | '-' | '*' | '/'
                    // 
op0_expr            ::= '(' expr ')'
                    //  1+2*3-4 
op2_expr            ::= expr (op2_sign expr)+
                    // 
expr                ::= num | op0_expr | op2_expr
";
string _path = "D:\\ASTs"; // AST
string _namespace = "Facc.Example.ASTs"; // AST
var _generator = new AstGenerator (_grammar, _path, _namespace);
_generator.ClearPath (); // 
_generator.Generate (null); // AST

AST

var _ast_parser = new AstParser ();
var _root = _ast_parser.Parse<ASTs.ExprAST> ("3+2*5-4+(123213213");
if (_root != null) {
    Console.WriteLine ();
    _root.PrintTree (0);
} else {
    var _err =_ast_parser.Error;
    Console.WriteLine ();
    Console.WriteLine ($"Error in Line {_err.Line}: {_err.ErrorInfo}");
    Console.WriteLine (_err.LineCode);
    Console.WriteLine ($"{new string (' ', _err.LinePos)}^");
}

• Facc
• Facc

License

MIT CC-BY-SA 4.0