/// <summary>
/// generate from a input string a rule by parsing and compiling and store it
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
private bool Generate(Antlr4.Runtime.ICharStream input)
{
try
{
RulezLexer aLexer = new RulezLexer(input);
// wrap a token-stream around the lexer
Antlr4.Runtime.CommonTokenStream theTokens = new Antlr4.Runtime.CommonTokenStream(aLexer);
// create the aParser
RulezParser aParser = new RulezParser(theTokens);
aParser.Trace = true;
aParser.Engine = this;
//aParser.RemoveErrorListeners();
//aParser.AddErrorListener(new ErrorListener());
RulezParser.RulezUnitContext aTree = aParser.rulezUnit();
// walk the parse tree -> get the result XPTree
XPTGenerator aGenerator = new XPTGenerator(aParser);
Antlr4.Runtime.Tree.ParseTreeWalker.Default.Walk(aGenerator, aTree);
// result -> Generate and store from the XPTree
return(Generate((IRule)aGenerator.XPTree));
}
catch (Exception ex)
{
return(false);
}
}
/// <summary>
/// Verify a source code and return the Inode
/// </summary>
/// <param name="source"></param>
/// <returns></returns>
public INode Verifiy(string source)
{
RulezParser.MessageListener aListener = new RulezParser.MessageListener();
RulezParser.RulezUnitContext aCtx = null;
try
{
RulezLexer aLexer = new RulezLexer(new Antlr4.Runtime.AntlrInputStream(source));
// wrap a token-stream around the lexer
Antlr4.Runtime.CommonTokenStream theTokens = new Antlr4.Runtime.CommonTokenStream(aLexer);
// create the aParser
RulezParser aParser = new RulezParser(theTokens);
aParser.Trace = true;
aParser.Engine = this;
aParser.AddErrorListener(aListener);
aCtx = aParser.rulezUnit();
if (aCtx != null)
{
return(aCtx.XPTreeNode);
}
return(null);
}
catch (Exception ex)
{
if (aCtx != null)
{
if (aCtx.XPTreeNode != null)
{
aCtx.XPTreeNode.Messages.Add(new Message(type: MessageType.Error, message: ex.Message));
return(aCtx.XPTreeNode);
}
}
return(null);
}
}
