public void BnfToCode()
{
// roundtrip to generated code then back again
var bnfParser = new BnfGrammar();
// generate code from bnf
var code = bnfParser.ToCode(postalAddressBnf, "postal-address", "PostalGrammar");
// execute the code and test
var addressParser = Helper.Create <Grammar>(code, "PostalGrammar");
TestAddress(addressParser);
}
private static string GetCode(CommandLineOptions opts)
{
switch (Path.GetExtension(opts.GrammarFile))
{
case ".bnf":
var gr = new BnfGrammar();
return(gr.ToCode(File.ReadAllText(opts.GrammarFile), opts.StartParser, opts.GrammarName));
case ".ebnf":
var egr = new EbnfGrammar(EbnfStyle.W3c | EbnfStyle.SquareBracketAsOptional | EbnfStyle.WhitespaceSeparator);
return(egr.ToCode(File.ReadAllText(opts.GrammarFile), opts.StartParser, opts.GrammarName));
case ".gold":
var ggr = new GoldGrammar();
return(ggr.ToCode(File.ReadAllText(opts.GrammarFile), opts.GrammarName));
}
throw new Exception("Unknown Grammar. Try .ebnf .bnf .gold");
}