public object program; //You might derive a specific object
public void Setup()
{
//This procedure can be called to load the parse tables. The class can
//read tables using a BinaryReader.
parser.LoadTables(Path.Combine(Application.StartupPath, "grammar.egt"));
}
public void Parse(string code)
{
this.Structures = new List<LogicStructure>();
this.Functions = new List<LogicFunction>();
var stream = Assembly.GetExecutingAssembly().GetManifestResourceStream("Protogame.Scripting.LogicControl.Grammar.egt");
var parser = new Parser();
if (stream != null)
{
using (var reader = new BinaryReader(stream))
{
parser.LoadTables(reader);
}
}
else
{
throw new InvalidOperationException();
}
parser.Open(ref code);
Reduction root = null;
var done = false;
while (!done)
{
var response = parser.Parse();
switch (response)
{
case GOLD.ParseMessage.LexicalError:
throw new Exception("Lexical Error:\n" +
"Position: " + parser.CurrentPosition().Line + ", " + parser.CurrentPosition().Column + "\n" +
"Read: " + parser.CurrentToken().Data);
case GOLD.ParseMessage.SyntaxError:
throw new Exception("Syntax Error:\n" +
"Position: " + parser.CurrentPosition().Line + ", " + parser.CurrentPosition().Column + "\n" +
"Read: " + parser.CurrentToken().Data + "\n" +
"Expecting: " + parser.ExpectedSymbols().Text());
case GOLD.ParseMessage.Accept:
root = (GOLD.Reduction)parser.CurrentReduction;
done = true;
break;
case GOLD.ParseMessage.InternalError:
throw new Exception("Internal error");
case GOLD.ParseMessage.NotLoadedError:
throw new Exception("Tables not loaded");
case GOLD.ParseMessage.GroupError:
throw new Exception("Runaway group");
}
}
this.TraverseNodes(root);
}
public bool Setup(BinaryReader reader)
{
return(parser.LoadTables(reader));
}