public VarAstNode(int ttype, VarDescr varDescr)
: base(new CommonToken(AstNodeType.VAR))
{
VarDescr = varDescr;
}
// $ANTLR start "ident"
// antlr_temp_dir\\MathExpr.g:54:1: ident : id= IDENT -> VAR[varDescr] ;
public MathExprParser.ident_return ident() // throws RecognitionException [1]
{
MathExprParser.ident_return retval = new MathExprParser.ident_return();
retval.Start = input.LT(1);
object root_0 = null;
IToken id = null;
object id_tree=null;
RewriteRuleTokenStream stream_IDENT = new RewriteRuleTokenStream(adaptor,"token IDENT");
try
{
// antlr_temp_dir\\MathExpr.g:54:6: (id= IDENT -> VAR[varDescr] )
// antlr_temp_dir\\MathExpr.g:55:3: id= IDENT
{
id=(IToken)Match(input,IDENT,FOLLOW_IDENT_in_ident345);
stream_IDENT.Add(id);
string identifier=((id != null) ? id.Text : null);
// работа с таблицей идентификаторов
VarDescr varDescr = null;
if (identTable.ContainsKey(identifier)) {
IdentDescr identDescr = identTable[identifier];
if (identDescr is VarDescr)
varDescr = (VarDescr)identDescr;
else
throw new ParserBaseException(string.Format("Идентификатор {0} не является переменной (pos={1},{2})", identifier, id.Line, id.CharPositionInLine));
}
else {
varDescr = new VarDescr(identifier);
identTable[identifier] = varDescr;
}
// AST REWRITE
// elements:
// token labels:
// rule labels: retval
// token list labels:
// rule list labels:
// wildcard labels:
retval.Tree = root_0;
RewriteRuleSubtreeStream stream_retval = new RewriteRuleSubtreeStream(adaptor, "rule retval", retval!=null ? retval.Tree : null);
root_0 = (object)adaptor.GetNilNode();
// 71:5: -> VAR[varDescr]
{
adaptor.AddChild(root_0, new VarAstNode(VAR, varDescr));
}
retval.Tree = root_0;retval.Tree = root_0;
}
retval.Stop = input.LT(-1);
retval.Tree = (object)adaptor.RulePostProcessing(root_0);
adaptor.SetTokenBoundaries(retval.Tree, (IToken) retval.Start, (IToken) retval.Stop);
}
catch (RecognitionException re)
{
ReportError(re);
Recover(input,re);
// Conversion of the second argument necessary, but harmless
retval.Tree = (object)adaptor.ErrorNode(input, (IToken) retval.Start, input.LT(-1), re);
}
finally
{
}
return retval;
}