public bool SyntaxError(lr_parser parser, Symbol curToken)
{
TypeCobolProgramParser tcpParser = parser as TypeCobolProgramParser;
if (tcpParser.IsTrial)
{
return(true);
}
List <string> expected = ExpectedSymbols(parser, curToken);
string symName = CodeElementTokenizer.CupTokenToString(curToken.sym);
Symbol validSymbol = GetParserValidStackSymbol(parser, curToken);
string text = validSymbol != null ? (validSymbol.value as CodeElement).Text : "";
string msg = string.Format("extraneous input '{0}' expecting {{{1}}}", text, string.Join(", ", expected));
System.Diagnostics.Debug.WriteLine(msg);
CupParserDiagnostic diagnostic = new CupParserDiagnostic(msg, validSymbol, null);
AddDiagnostic(diagnostic);
//Try to add the last encountered statement in the stack if it is not already entered.
StackList <Symbol> stack = tcpParser.getParserStack();
foreach (var symbol in stack)
{
if (symbol.value is StatementElement)
{
lr_parser stmtParser = CloneParser(parser, TypeCobolProgramSymbols.StatementEntryPoint,
symbol.value as CodeElement, true);
stmtParser.parse();
break;
}
}
return(true);
}
/// <summary>
/// Create a new parser using a clone.
/// </summary>
/// <param name="parser">The parser to be cloned</param>
/// <param name="start">The start entry point to use</param>
/// <param name="firstSymbol">The First Symbol</param>
/// <param name="trial">If we are creating atrial parser, fals eo therwise</param>
/// <returns>The new parser</returns>
public lr_parser CloneParser(lr_parser parser, int start, CodeElement firstSymbol, bool trial)
{
TypeCobolProgramParser tcpParser = parser as TypeCobolProgramParser;
ProgramClassBuilder builder = tcpParser.Builder as ProgramClassBuilder;
var errorReporter = tcpParser.ErrorReporter;
var tokenizer = parser.getScanner() as CodeElementTokenizer;
CodeElementTokenizer newTokenizer = new CodeElementTokenizer(start, firstSymbol);
TypeCobolProgramParser newParser = new TypeCobolProgramParser(newTokenizer);
newParser.Builder = builder;
newParser.ErrorReporter = errorReporter;
newParser.IsTrial = trial;
return(newParser);
}
