private void ReadChunk(BinaryReader br, List <BaseChunk> chunks)
{
// no point parsing last 8 bytes as it's either padding or an empty chunk
if (br.BaseStream.Length - br.BaseStream.Position <= 8)
{
return;
}
string tag = br.ReadString(4);
if (TypeLookup.ContainsKey(tag))
{
br.BaseStream.Position -= 4;
var chunk = (BaseChunk)Activator.CreateInstance(TypeLookup[tag], br, Version);
if (Version == 0 && chunk is VERS vers)
{
Version = vers.Version;
}
chunks.Add(chunk);
}
else
{
throw new Exception($"Unknown type {tag}");
}
}
/// <summary>
/// Registers custom type mapping
/// </summary>
/// <param name="tsType">The TypeScript type</param>
/// <param name="type">The native type</param>
/// <returns></returns>
public Scripter WithTypeMapping(TsType tsType, Type type)
{
var typeSymbol = _compilation.GetTypeByMetadataName(type.FullName);
if (typeSymbol != null)
{
if (TypeLookup.ContainsKey(typeSymbol))
{
throw new ArgumentException("Mapping for " + type.Name + " is already defined.", nameof(type));
}
TypeLookup[typeSymbol] = tsType;
}
return(this);
}
internal void Parse(INode n, XsdtType x)
{
switch (n.NodeType)
{
case NodeType.Uri:
x.NetType = typeof(Uri);
x.ValuePart = n.ToString();
x.XsdtTypeName = XsdtPrimitiveDataType.XsdtAnyUri;
ConvertValueToNet(x);
break;
case NodeType.Literal:
ILiteralNode lit = (ILiteralNode)n;
x.XsdtTypeName = XsdtPrimitiveDataType.XsdtUnknown;
x.ValuePart = lit.Value;
if (lit.DataType != null)
{
if (lit.DataType.ToString().StartsWith(NamespaceMapper.XMLSCHEMA))
{
x.TypePart = lit.DataType.ToString().Substring(NamespaceMapper.XMLSCHEMA.Length);
}
else
{
x.TypePart = "string";
}
}
else
{
if (TurtleSpecsHelper.IsValidPlainLiteral(lit.Value))
{
if (TurtleSpecsHelper.IsValidInteger(lit.Value))
{
x.TypePart = "integer";
}
else if (TurtleSpecsHelper.IsValidDecimal(lit.Value))
{
x.TypePart = "decimal";
}
else if (TurtleSpecsHelper.IsValidDouble(lit.Value))
{
x.TypePart = "double";
}
else
{
x.TypePart = "boolean";
}
}
else
{
x.TypePart = "string";
}
}
foreach (int i in Enum.GetValues(typeof(XsdtPrimitiveDataType)))
{
var result = (XsdtPrimitiveDataType)i;
XsdtAttribute attr = GetXsdtAttrFor(result);
if (attr.TypeUri == x.TypePart)
{
x.XsdtTypeName = result;
}
}
if (TypeLookup.ContainsKey(x.XsdtTypeName))
{
x.NetType = TypeLookup[x.XsdtTypeName];
}
else
{
throw new LinqToRdfException("XsdtTypeConverter does not know how to convert the XML Schema Datatype " + x.TypePart);
}
ConvertValueToNet(x);
break;
default:
throw new LinqToRdfException("XsdtTypeConverter can only convert URI and Literal Nodes");
}
}
public static bool IsTypeKnown(StringId id)
{
return(m_attrTypes.ContainsKey(id) || m_userTypes.ContainsKey(id));
}
private static bool RegisterTypeToLookup(TypeLookup lookup, string name, int hash, DataType type)
{
if (name != null)
{
if (hash != -1)
{
// add manual lookup
StringHasher.AddToLookup(hash, name);
}
else
{
hash = StringHasher.GetHash(name);
// try adding this to the lookup
if (!StringHasher.CanResolveHash(hash))
{
Debug.WriteLine($"- Adding '{name}' to lookup");
StringHasher.AddToLookup(name);
}
}
if (!lookup.ContainsKey(hash))
{
lookup.Add(hash, type);
}
var id = name;
var parentId = "";
var splitIdx = name.LastIndexOf('.');
if (splitIdx != -1)
{
parentId = name.Substring(0, splitIdx);
id = name.Substring(splitIdx + 1);
StringHasher.AddToLookup(parentId);
StringHasher.AddToLookup(id);
}
// auto-register accompanying "text_*" string
if ((type == DataType.StringId) || (type == DataType.PathId))
{
id = $"text_{id}";
if (!String.IsNullOrEmpty(parentId))
{
id = $"{parentId}.{id}";
}
RegisterTypeToLookup(lookup, id, -1, DataType.String);
}
}
else
{
// empty attribute!?
if (hash == -1)
{
return(false);
}
//--var canResolve = StringHasher.CanResolveHash(hash);
//--
//--name = (canResolve)
//-- ? StringHasher.ResolveHash(hash)
//-- : $"_{hash:X8}";
//--
//--if (canResolve)
//--{
//-- if (IsTypeKnown(hash))
//-- {
//-- var knownType = GetType(hash);
//--
//-- //WriteUniqueHint($"<!-- Remove: --><Attribute Hash=\"{attrHash:X8}\" Type=\"{attrType.ToString()}\" /><!-- SameAs --><Attribute Name=\"{name}\" Type=\"{knownType.ToString()}\" />");
//-- }
//-- else
//-- {
//-- //WriteUniqueHint($"<!-- Rename: --><Attribute Hash=\"{attrHash:X8}\" Type=\"{attrType.ToString()}\" /><!-- EqualTo --><Attribute Name=\"{name}\" Type=\"{attrType.ToString()}\" />");
//-- }
//--}
if (!lookup.ContainsKey(hash))
{
lookup.Add(hash, type);
}
}
return(true);
}
