internal static void AssertSymbolInTable(string text, int sid, bool duplicate, ISymbolTable symbolTable)
{
if (text == null)
{
Assert.IsNull(symbolTable.FindKnownSymbol(sid));
return;
}
if (sid != SymbolToken.UnknownSid)
{
Assert.AreEqual(text, symbolTable.FindKnownSymbol(sid));
}
if (duplicate)
{
return;
}
Assert.AreEqual(sid, symbolTable.FindSymbolId(text));
var token = symbolTable.Find(text);
Assert.AreEqual(SymbolToken.UnknownSid, token.Sid);
Assert.AreEqual(text, token.Text);
token = symbolTable.Intern(text);
Assert.AreEqual(SymbolToken.UnknownSid, token.Sid);
Assert.AreEqual(text, token.Text);
}
public override string[] GetTypeAnnotations()
{
string[] annotations = new string[this.annotations.Count];
for (int index = 0; index < this.annotations.Count; index++)
{
SymbolToken symbolToken = this.annotations[index];
if (symbolToken.Text is null)
{
if (symbolToken.ImportLocation == default)
{
throw new UnknownSymbolException(symbolToken.Sid);
}
else
{
ISymbolTable symtab = this.GetSymbolTable();
string text = symtab.FindKnownSymbol(symbolToken.ImportLocation.Sid);
if (text == null)
{
throw new UnknownSymbolException(symbolToken.ImportLocation.Sid);
}
annotations[index] = symtab.FindKnownSymbol(symbolToken.ImportLocation.Sid);
}
}
else
{
annotations[index] = symbolToken.Text;
}
}
return(annotations);
}
public Entity(Stream stream, int id, int type, ISymbolTable symbolTable, IonLoader loader)
{
using var reader = new BinaryReader(stream, Encoding.UTF8, true);
Signature = Encoding.ASCII.GetString(reader.ReadBytes(4));
if (Signature != EntitySignature)
{
throw new Exception("Invalid signature");
}
Version = reader.ReadUInt16();
if (!_allowedVersions.Contains(Version))
{
throw new Exception($"Version not supported ({Version})");
}
Length = reader.ReadUInt32();
if (Length < MinHeaderLength)
{
throw new Exception("Header too short");
}
// Duplicated in KfxContainer
// 10 = number of bytes read so far
var containerInfoData = new MemoryStream(stream.ReadBytes((int)Length - 10));
var entityInfo = loader.LoadSingle <IonStruct>(containerInfoData);
if (entityInfo == null)
{
throw new Exception("Bad container or something");
}
var compressionType = entityInfo.GetField(KfxSymbols.BcComprType).IntValue;
if (compressionType != KfxContainer.DefaultCompressionType)
{
throw new Exception($"Unexpected bcComprType ({compressionType})");
}
var drmScheme = entityInfo.GetField(KfxSymbols.BcDrmScheme).IntValue;
if (drmScheme != KfxContainer.DefaultDrmScheme)
{
throw new Exception($"Unexpected bcDRMScheme ({drmScheme})");
}
FragmentId = symbolTable.FindKnownSymbol(id);
FragmentType = symbolTable.FindKnownSymbol(type);
Value = RawFragmentTypes.Contains(FragmentType)
? new IonBlob(new ReadOnlySpan <byte>(stream.ReadToEnd()))
: ((IonDatagram)loader.Load(stream.ReadToEnd())).Single();
// Skipping annotation handling for now
//if ftype == fid and ftype in ROOT_FRAGMENT_TYPES and not self.pure:
//fid = "$348"
//return YJFragment(fid = fid if fid != "$348" else None, ftype = ftype, value = self.value)
}
/// <summary>
/// Load the symbol string from the symbol table to _v
/// </summary>
/// <remarks>This assumes LoadOnce() has been called and _v already has the sid as Int</remarks>
/// <exception cref="UnknownSymbolException">The Sid does not exist in the table</exception>
private void LoadSymbolValue()
{
PrepareValue();
Debug.Assert(_v.TypeSet.HasFlag(ScalarType.Int));
Debug.Assert(_v.AuthoritativeType == ScalarType.Int, $"AuthType is ${_v.AuthoritativeType}");
if (_v.TypeSet.HasFlag(ScalarType.String))
{
return;
}
var text = _symbolTable.FindKnownSymbol(_v.IntValue);
_v.AddString(text);
}
/// <summary>
/// Try to re-make the token in the context of the <paramref name="table"/>.
/// </summary>
/// <param name="table">Symbol table</param>
/// <param name="token">Un-localized token</param>
/// <returns>Localized token</returns>
public static SymbolToken Localize(ISymbolTable table, SymbolToken token)
{
var newToken = token;
//try to localize
if (token.Text == null)
{
var text = table.FindKnownSymbol(token.Sid);
if (text != null)
{
newToken = new SymbolToken(text, token.Sid);
}
}
else
{
newToken = table.Find(token.Text);
if (newToken == default)
{
newToken = new SymbolToken(token.Text, SymbolToken.UnknownSid);
}
}
return(newToken);
}