private static CTFAssignmentExpression Parse(CTFScope scope, TokParser tp)
{
CTFUnaryExpression cue = CTFUnaryExpression.Parse(tp);
if (cue != null)
{
if (tp.Match(Token.EnumId.ASSIGNMENT))
{
CTFUnaryExpression cue2 = CTFUnaryExpression.Parse(tp);
if (cue2 == null)
{
throw new CTFException();
}
return(new CTFAssignmentExpression(cue, cue2));
}
if (tp.Match(Token.EnumId.TYPE_ASSIGNMENT))
{
CTFTypeSpecifier cs = CTFITypeSpecifier.ParseTypeSpecifier(scope, tp);
if (cs == null)
{
throw new CTFException();
}
return(new CTFAssignmentExpression(cue, cs));
}
}
return(null);
}
internal static CTFITypeSpecifier Parse(CTFScope scope, TokParser tp)
{
if (!tp.Match(Token.EnumId.ENUM))
{
return(null);
}
tp.MustBe(Token.EnumId.COLON);
List <CTFTypeSpecifier> cds = ParseList(scope, tp);
tp.MustBe(Token.EnumId.LCURL);
List <CTFEnumElem> list = new List <CTFEnumElem>();
do
{
CTFEnumElem ce = CTFEnumElem.Parse(tp);
list.Add(ce);
}while (tp.Match(Token.EnumId.SEPARATOR));
tp.MustBe(Token.EnumId.RCURL);
return(new CTFEnumSpecifier(Token.EnumId.ENUM, cds, list));
}
internal static CTFEnumElem Parse(TokParser tp)
{
string name = tp.GetIden();
tp.MustBe(Token.EnumId.ASSIGNMENT);
CTFUnaryExpression first = CTFUnaryExpression.Parse(tp);
CTFEnumElem ce = new CTFEnumElem(name, first.Calculate());
if (tp.Match(Token.EnumId.ELIPSES))
{
ce.Second = CTFUnaryExpression.Parse(tp).Calculate();
}
return(ce);
}
internal static CTFTypeSpecifier Parse(CTFScope scope, TokParser tp)
{
string name = null;
List <CTFStructOrVariantDeclaration> list = null;
if (!tp.Match(Token.EnumId.STRUCT))
{
return(null);
}
if (tp.Token.Id == Token.EnumId.IDEN)
{
name = tp.Token.Buffer;
tp.Next();
}
if (tp.Match(Token.EnumId.LCURL))
{
list = CTFStructOrVariantDeclaration.ParseList(scope, tp);
tp.MustBe(Token.EnumId.RCURL);
}
int align = 0;
if (tp.Match(Token.EnumId.ALIGN))
{
tp.MustBe(Token.EnumId.LPAREN);
CTFUnaryExpression cue = CTFUnaryExpression.Parse(tp);
tp.MustBe(Token.EnumId.RPAREN);
align = cue.Calculate();
}
CTFType ct = CTFType.GetStructType(scope, name, list, align);
return(new CTFStructSpecifier(ct));
}
