/// <summary>
/// Register a ParserDiagnostic for each syntax error encountered by the parser
/// </summary>
public override void SyntaxError(IRecognizer recognizer, IToken offendingSymbol, int line, int charPositionInLine, string msg, RecognitionException e)
{
// Build a string representing the current grammar rules being recognized
StringBuilder ruleStack = new StringBuilder();
IList<String> stack = ((Antlr4.Runtime.Parser)recognizer).GetRuleInvocationStack();
bool isFirst = true;
foreach (string ruleInvocation in stack.Reverse())
{
if(isFirst) { isFirst = false; }
else
{
ruleStack.Append('>');
}
ruleStack.Append(ruleInvocation);
}
// Register a new diagnostic
ParserDiagnostic diagnostic = new ParserDiagnostic(msg, offendingSymbol, ruleStack.ToString());
Diagnostics.Add(diagnostic);
}
/// <summary>
/// Register a ParserDiagnostic for each syntax error encountered by the parser
/// </summary>
public override void SyntaxError(IRecognizer recognizer, IToken offendingSymbol, int line, int charPositionInLine, string msg, RecognitionException e)
{
// Build a string representing the current grammar rules being recognized
StringBuilder ruleStack = new StringBuilder();
IList <String> stack = ((Antlr4.Runtime.Parser)recognizer).GetRuleInvocationStack();
bool isFirst = true;
foreach (string ruleInvocation in stack.Reverse())
{
// Hide the root rule which is useful for error recovery and perf, but does not exist in the pure Cobol grammar
if (ruleInvocation == "cobolCodeElements")
{
continue;
}
if (isFirst)
{
isFirst = false;
}
else
{
ruleStack.Append('>');
}
ruleStack.Append(ruleInvocation);
}
// Create a new diagnostic object
ParserDiagnostic diagnostic = new ParserDiagnostic(msg, offendingSymbol, ruleStack.ToString());
// Attach this diagnostic to the current parse tree rule
var parser = (Antlr4.Runtime.Parser)recognizer;
if (parser != null && parser.Context is ParserRuleContextWithDiagnostics)
{
var currentRuleContext = (ParserRuleContextWithDiagnostics)parser.Context;
currentRuleContext.AttachDiagnostic(diagnostic);
}
}
