private static PassiveExpression PreAlph(PassiveExpression expression)
{
Pattern pattern2 = new Pattern(new SymbolVariable("s.1"), new SymbolVariable("s.1"));
if (RefalBase.Match(expression, pattern2))
{
return(PassiveExpression.Build(true));
}
;
Pattern pattern3 = new Pattern(new SymbolVariable("s.1"), new SymbolVariable("s.2"));
if (RefalBase.Match(expression, pattern3))
{
PassiveExpression expression4 = PassiveExpression.Build(Alphabet(PassiveExpression.Build()));
Pattern pattern4 = new Pattern(new ExpressionVariable("e.A"), new SymbolVariable("s.1"), new ExpressionVariable("e.B"), new SymbolVariable("s.2"), new ExpressionVariable("e.C"));
pattern4.BindVariables(pattern3);
if (RefalBase.Match(expression4, pattern4))
{
return(PassiveExpression.Build(true));
}
;
}
;
Pattern pattern5 = new Pattern(new ExpressionVariable("e.Z"));
if (RefalBase.Match(expression, pattern5))
{
return(PassiveExpression.Build(false));
}
;
throw new RecognitionImpossibleException("Recognition impossible");
}