public INode Parse(Shape shape, string text)
{
Keeper = new ParsingKeeper();
Keeper.SetFieldName("фигура");
var reader = new StringReader(text);
var input = new AntlrInputStream(reader.ReadToEnd());
var lexer = new ShapeViewLexer(input);
var errorLexerListener = new LexerErrorListener(Keeper, text);
lexer.RemoveErrorListeners();
lexer.AddErrorListener(errorLexerListener);
var tokens = new CommonTokenStream(lexer);
var parser = new ShapeViewParser(tokens);
var errorParserListener = new ParserErrorListener(Keeper);
parser.RemoveErrorListeners();
parser.AddErrorListener(errorParserListener);
IParseTree tree = parser.prog();
if (tree == null)
{
Keeper.AddError("Недопустимое выражение", (IToken)null);
return(new NodeError(null, "Недопустимое выражение"));
}
var visitor = new ShapeViewVisitor {
GroupShape = shape, Keeper = Keeper
};
var n = Node.Visit(visitor, subParse => subParse[0], tree);
if (n is NodeError && n.Token == null)
{
Keeper.AddError("Недопустимое выражение", (IToken)null);
return(new NodeError(null, "Недопустимое выражение"));
}
return(n);
}
public ParserErrorListener(ParsingKeeper keeper)
{
_keeper = keeper;
}
public LexerErrorListener(ParsingKeeper keeper, string fieldValue)
{
_fieldValue = fieldValue;
_keeper = keeper;
}