private void ValidateAll()
{
//Check rule on all non-terminals
StringSet ntList = new StringSet();
foreach (NonTerminal nt in Data.NonTerminals)
{
if (nt == Data.AugmentedRoot)
{
continue; //augm root does not count
}
BnfExpressionData data = nt.Rule.Data;
if (data.Count == 1 && data[0].Count == 1 && data[0][0] is NonTerminal)
{
ntList.Add(nt.Name);
}
}//foreach
if (ntList.Count > 0)
{
string slist = TextUtils.Cleanup(ntList.ToString(", "));
AddError("Warning: Possible non-terminal duplication. The following non-terminals have rules containing a single non-terminal: \r\n {0}. \r\n" +
"Consider merging two non-terminals; you may need to use 'nt1 = nt2;' instead of 'nt1.Rule=nt2'.", slist);
}
//Check constructors of all nodes referenced in Non-terminals that don't use NodeCreator delegate
var ctorArgTypes = new Type[] { typeof(NodeArgs) };
foreach (NonTerminal nt in Data.NonTerminals)
{
if (nt.NodeCreator == null && nt.NodeType != null)
{
object ci = nt.NodeType.GetConstructor(ctorArgTypes);
if (ci == null)
{
AddError(
@"AST Node class {0} referenced by non-terminal {1} does not have a constructor for automatic node creation.
Provide a constructor with a single NodeArgs parameter, or use NodeCreator delegate property in NonTerminal.",
nt.NodeType, nt.Name);
}
} //if
} //foreach ntInfo
} //method
private void ValidateAll()
{
//Check rule on all non-terminals
StringSet ntList = new StringSet();
foreach (NonTerminal nt in Data.NonTerminals)
{
if (nt == Data.AugmentedRoot)
{
continue; //augm root does not count
}
BnfExpressionData data = nt.Rule.Data;
if (data.Count == 1 && data[0].Count == 1 && data[0][0] is NonTerminal)
{
ntList.Add(nt.Name);
}
}//foreach
if (ntList.Count > 0)
{
string slist = TextUtils.Cleanup(ntList.ToString(", "));
AddError("Warning: Possible non-terminal duplication. The following non-terminals have rules containing a single non-terminal: \r\n {0}. \r\n" +
"Consider merging two non-terminals; you may need to use 'nt1 = nt2;' instead of 'nt1.Rule=nt2'.", slist);
}
}
public override string ToString()
{
return(Core.ToString() + " LOOKAHEADS: " + TextUtils.Cleanup(Lookaheads.ToString(" ")));
}
private void ReportParserError()
{
if (_currentToken.Terminal == Grammar.Eof)
{
ReportError(_currentToken.Location, "Unexpected end of file.");
return;
}
StringList expectedList = GetCurrentExpectedSymbols();
string message = this.Data.Grammar.GetSyntaxErrorMessage(_context, expectedList);
if (message == null)
{
message = "Syntax error" + (expectedList.Count == 0 ? "." : ", expected: " + TextUtils.Cleanup(expectedList.ToString(" ")));
}
ReportError(_currentToken.Location, message);
}
} //Parse
#endregion
#region Error reporting and recovery
private void ReportParseError()
{
if (_currentToken.Terminal == Grammar.Eof)
{
_context.ReportError(_currentToken.Location, "Unexpected end of file.");
return;
}
StringSet expectedList = GetCurrentExpectedSymbols();
string message = this.Data.Grammar.GetSyntaxErrorMessage(_context, expectedList);
if (message == null)
{
message = "Syntax error" + (expectedList.Count == 0 ? "." : ", expected: " + TextUtils.Cleanup(expectedList.ToString(" ")));
}
if (_context.OptionIsSet(CompilerOptions.GrammarDebugging))
{
message += " (parser state: " + _currentState.Name + ")";
}
_context.Errors.Add(new SyntaxError(_currentToken.Location, message));
}