public override ParseTree Parse(Lexer lexer, ParserState state)
{
if (!simple && (state.LeftHandSide != null))
{
Type leftType = state.LeftHandSide.Value.GetType();
Type patternType = pattern.Type;
if ((leftType == patternType) || leftType.IsSubclassOf(patternType))
{
state.RuntimeState.Runtime.ParseTrace.Single("left hand side from recursion");
lexer.Position = state.LeftHandSideEndPos;
return(state.LeftHandSide);
}
}
return(pattern.Parse(lexer, state));
}