XSharpParserRuleContext buildTree(XSharpParser parser)
{
XSharpParserRuleContext tree;
if (_isScript)
{
if (_isMacroScript)
{
tree = parser.macroScript();
}
else
{
tree = parser.script();
}
}
else if (_options.Dialect == XSharpDialect.FoxPro)
{
tree = parser.foxsource();
}
else
{
tree = parser.source();
}
return(tree);
}
static int AnalyzeCode(string code, bool showErrors)
{
var stream = new AntlrInputStream(code.ToString());
var lexer = new XSharpLexer(stream);
lexer.Options = new CSharpParseOptions();
var tokens = new CommonTokenStream(lexer);
var parser = new XSharpParser(tokens);
parser.Options = lexer.Options;
var errorListener = new XSharpErrorListener(showErrors);
parser.AddErrorListener(errorListener);
var tree = parser.source();
//Console.WriteLine(tree.ToStringTree());
return(errorListener.TotalErrors);
}
List <MethodInfo> GetMethodInfos()
{
var lexer = XSharpLexer.Create(SourceCodeFile.SourceCode, SourceCodeFile.FileName);
lexer.RemoveErrorListeners();
var tokenStream = new CommonTokenStream(lexer, 0);
var parser = new XSharpParser(tokenStream);
parser.Options = new XSharpParseOptions();
parser.Options.SetXSharpSpecificOptions(XSharpSpecificCompilationOptions.Default);
parser.RemoveErrorListeners();
var source = parser.source();
var listener = new MethodListener();
new ParseTreeWalker().Walk(listener, source);
return(listener.MethodList);
}
private static void Parse(string fileName)
{
ITokenStream stream;
IList <ParseErrorData> parseErrors = ParseErrorData.NewBag();
var filestream = new AntlrFileStream(fileName);
var lexer = new XSharpLexer(filestream);
lexer.TokenFactory = XSharpTokenFactory.Default;
stream = new CommonTokenStream(lexer, Lexer.DefaultTokenChannel);
var parser = new XSharpParser(stream);
parser.IsScript = false;
parser.AllowFunctionInsideClass = false;
parser.AllowNamedArgs = false;
parser.AllowXBaseVariables = false;
parser.RemoveErrorListeners();
parser.Interpreter.PredictionMode = PredictionMode.Sll;
parser.Interpreter.reportAmbiguities = true;
parser.Interpreter.enable_global_context_dfa = true; // default false
parser.Interpreter.optimize_tail_calls = true;
parser.Interpreter.tail_call_preserves_sll = true;
//parser.Interpreter.userWantsCtxSensitive = true; // default true
parser.ErrorHandler = new XSharpErrorStrategy();
parser.AddErrorListener(new XSharpErrorListener(fileName, parseErrors, true));
XSharpParserRuleContext tree;
try
{
tree = parser.source();
}
catch (ParseCanceledException)
{
Console.WriteLine("Parse error, Errors from SLL mode");
showErrors(parseErrors);
parseErrors.Clear();
parser.ErrorHandler = new XSharpErrorStrategy();
parser.AddErrorListener(new XSharpErrorListener(fileName, parseErrors, true));
parser.Interpreter.PredictionMode = PredictionMode.Ll;
parser.Interpreter.force_global_context = true;
parser.Interpreter.optimize_ll1 = false;
parser.Interpreter.reportAmbiguities = true;
parser.Reset();
try
{
tree = parser.source();
}
catch (Exception e)
{
tree = null;
Console.WriteLine(e.Message);
}
}
// find parser errors (missing tokens etc)
foreach (var e in lexer.LexErrors)
{
parseErrors.Add(e);
}
var walker = new ParseTreeWalker();
var errchecker = new XSharpParseErrorAnalysis(parser, parseErrors);
if (tree != null)
{
walker.Walk(errchecker, tree);
}
Console.WriteLine("Parse error, Errors:");
showErrors(parseErrors);
}
public static bool Parse(string sourceText, string fileName, CSharpParseOptions options, IErrorListener listener,
out ITokenStream tokens, out XSharpParser.SourceContext tree)
{
tree = null;
tokens = null;
var parseErrors = ParseErrorData.NewBag();
try
{
var lexer = XSharpLexer.Create(sourceText, fileName, options);
lexer.Options = options;
BufferedTokenStream tokenStream = lexer.GetTokenStream();
tokenStream.Fill();
tokens = (ITokenStream)tokenStream;
GetLexerErrors(lexer, tokenStream, parseErrors);
// do we need to preprocess
#region Determine if we really need the preprocessor
bool mustPreprocess = true;
if (lexer.HasPreprocessorTokens || !options.NoStdDef)
{
// no need to pre process in partial compilation
// if lexer does not contain UDCs, Messages or Includes
mustPreprocess = lexer.MustBeProcessed;
}
else
{
mustPreprocess = false;
}
#endregion
XSharpPreprocessor pp = null;
BufferedTokenStream ppStream = null;
pp = new XSharpPreprocessor(lexer, tokenStream, options, fileName, Encoding.Unicode, SourceHashAlgorithm.None, parseErrors);
if (mustPreprocess)
{
var ppTokens = pp.PreProcess();
ppStream = new CommonTokenStream(new XSharpListTokenSource(lexer, ppTokens));
}
else
{
// No Standard Defs and no preprocessor tokens in the lexer
// so we bypass the preprocessor and use the lexer token stream
ppStream = new CommonTokenStream(new XSharpListTokenSource(lexer, tokenStream.GetTokens()));
}
ppStream.Fill();
var parser = new XSharpParser(ppStream);
parser.Interpreter.tail_call_preserves_sll = false; // default = true Setting to FALSE will reduce memory used by parser
parser.Options = options;
tree = null;
parser.RemoveErrorListeners();
parser.Interpreter.PredictionMode = PredictionMode.Sll;
parser.ErrorHandler = new BailErrorStrategy();
try
{
tree = parser.source();
}
catch (Exception)
{
var errorListener = new XSharpErrorListener(fileName, parseErrors);
parser.AddErrorListener(errorListener);
parser.ErrorHandler = new XSharpErrorStrategy();
parser.Interpreter.PredictionMode = PredictionMode.Ll;
ppStream.Reset();
parser.Reset();
try
{
tree = parser.source();
}
catch (Exception)
{
tree = null;
}
}
}
catch (Exception)
{
tree = null;
}
ReportErrors(parseErrors, listener);
return(tree != null);
}
