public IInternalTreeNode Parse(string source)
{
var grammar = MakeGrammar();
var parseEngine = new ParseEngine(
grammar,
new ParseEngineOptions(loggingEnabled: true));
var parseRunner = new ParseRunner(parseEngine, source);
while (!parseRunner.EndOfStream())
{
if (!parseRunner.Read())
{
throw new Exception(
$"Unable to parse expression. Error at line {parseRunner.Line+1}, column {parseRunner.Column+1}.");
}
Console.WriteLine("-----");
Console.ReadKey(true);
}
if (!parseEngine.IsAccepted())
{
throw new Exception(
$"expression parse not accepted. Error at line {parseRunner.Line+1}, column {parseRunner.Column+1}.");
}
return(parseEngine.GetParseTree());
}
public IEbnfDefinition Parse(string ebnf)
{
var grammar = new EbnfGrammar();
var parseEngine = new ParseEngine(
grammar,
new ParseEngineOptions());
var parseRunner = new ParseRunner(parseEngine, ebnf);
while (!parseRunner.EndOfStream())
{
if (!parseRunner.Read())
{
throw new Exception(
$"Unable to parse Ebnf. Error at line {parseRunner.Line}, column {parseRunner.Column}.");
}
}
if (!parseEngine.IsAccepted())
{
throw new Exception(
$"Ebnf parse not accepted. Error at line {parseRunner.Line}, column {parseRunner.Column}.");
}
var parseTree = parseEngine.GetParseTree();
var ebnfVisitor = new EbnfVisitor();
parseTree.Accept(ebnfVisitor);
return(ebnfVisitor.Definition);
}
public Regex Parse(string regularExpression)
{
var grammar = new RegexGrammar();
var parseEngine = new ParseEngine(grammar, new ParseEngineOptions());
var parseRunner = new ParseRunner(parseEngine, regularExpression);
while (!parseRunner.EndOfStream())
{
if (!parseRunner.Read())
{
throw new Exception(
$"Unable to parse regular expression. Error at position {parseRunner.Position}.");
}
}
if (!parseEngine.IsAccepted())
{
throw new Exception(
$"Error parsing regular expression. Error at position {parseRunner.Position}");
}
var parseTree = parseEngine.GetParseTree();
var regexVisitor = new RegexVisitor();
parseTree.Accept(regexVisitor);
return(regexVisitor.Regex);
}
