public static VarDeclarationList Create(IdContainer Container, CodeString Code, List <Modifier> DefaultModifiers = null,
VarDeclarationListFlags Flags = VarDeclarationListFlags.Default)
{
var Ret = new VarDeclarationList(DefaultModifiers);
var Rec = Container.State.Language.VarDeclRecognizer;
if (Rec != null)
{
var EnableMessages = (Flags & VarDeclarationListFlags.EnableMessages) != 0;
if (!Rec.Recognize(Container, Code, EnableMessages, Ret))
{
return(null);
}
if (!Ret.Process(Container, Flags))
{
return(null);
}
}
else
{
throw new ApplicationException("A variable declaration recognizer is not avaiable");
}
return(Ret);
}
public bool Process(IdContainer Container, VarDeclarationListFlags Flags = VarDeclarationListFlags.Default)
{
var RetValue = true;
var State = Container.State;
var Type = (Identifier)null;
var FirstIsVoid = false;
for (var i = 0; i < Count; i++)
{
var e = this[i];
if (FirstIsVoid)
{
State.Messages.Add(MessageId.NotExpected, e.Declaration);
RetValue = false;
continue;
}
if (e.Name.IsValid)
{
if (!e.Name.IsValidIdentifierName)
{
if ((Flags & VarDeclarationListFlags.EnableMessages) != 0)
{
State.Messages.Add(MessageId.NotValidName, e.Name);
}
RetValue = false;
}
if (IsDefined(e.Name, i))
{
if ((Flags & VarDeclarationListFlags.EnableMessages) != 0)
{
State.Messages.Add(MessageId.IdAlreadyDefined, e.Name);
}
RetValue = false;
}
}
else if ((Flags & VarDeclarationListFlags.EnableUnnamed) == 0)
{
if ((Flags & VarDeclarationListFlags.EnableMessages) != 0)
{
State.Messages.Add(MessageId.MustBeNamed, e.Declaration);
}
RetValue = false;
}
if (e.TypeName.IsValid)
{
Type = e.Type;
Type.SetUsed();
var RType = Type.RealId as Type;
if (RType is AutomaticType)
{
if ((Flags & VarDeclarationListFlags.EnableAutoType) == 0)
{
if ((Flags & VarDeclarationListFlags.EnableMessages) != 0)
{
State.Messages.Add(MessageId.Untyped, e.TypeName);
}
RetValue = false;
}
}
else if (RType == null || (RType.TypeFlags & TypeFlags.CanBeVariable) == 0)
{
if (RType is VoidType && (Flags & VarDeclarationListFlags.EnableVoidOnly) != 0)
{
if (e.Name.IsValid)
{
if ((Flags & VarDeclarationListFlags.EnableMessages) != 0)
{
State.Messages.Add(MessageId.NotExpected, e.Name);
}
RetValue = false;
continue;
}
else if (e.InitString.IsValid)
{
if ((Flags & VarDeclarationListFlags.EnableMessages) != 0)
{
State.Messages.Add(MessageId.NotExpected, e.InitString);
}
RetValue = false;
continue;
}
FirstIsVoid = true;
}
else
{
if ((Flags & VarDeclarationListFlags.EnableMessages) != 0)
{
State.Messages.Add(MessageId.CannotBeThisType, e.TypeName);
}
RetValue = false;
}
}
}
else
{
if (Type != e.Type)
{
throw new ApplicationException();
}
}
if (e.InitString.IsValid && (Flags & VarDeclarationListFlags.EnableInitValue) == 0)
{
if ((Flags & VarDeclarationListFlags.EnableMessages) != 0)
{
State.Messages.Add(MessageId.CannotHaveInitVal, e.InitString);
}
RetValue = false;
}
}
return(RetValue);
}
