private ES_TypeInfo *GetType(SymbolStack <FrontendSymbol> symbols, SourceData src, ES_AstTypeDeclaration_TypeName typeName)
{
var idPool = Environment !.IdPool;
Debug.Assert(typeName.TypeName.Parts.Length > 0);
if (typeName.Namespace is not null)
{
using var namespaceChars = typeName.Namespace.ToPooledChars();
using var nameChars = typeName.TypeName.ToPooledChars();
var namespaceId = idPool.GetIdentifier(namespaceChars);
var nameId = idPool.GetIdentifier(nameChars);
var type = Environment !.GetFullyQualifiedType(namespaceId, nameId);
if (type == null)
{
var err = ES_FrontendErrors.GenCantFindSymbol(typeName.ToString(), src, typeName.NodeBounds);
errorList.Add(err);
return(Environment.TypeUnknownValue);
}
return(type);
}
else
{
var typeParts = typeName.TypeName.Parts;
var typeId = idPool.GetIdentifier(typeParts [0].Text.Span);
var symbol = symbols.GetSymbol(typeId);
if (symbol.Tag == FrontendSymbolType.None)
{
var err = ES_FrontendErrors.GenCantFindSymbol(typeParts [0].Text.Span.GetPooledString(), typeParts [0]);
errorList.Add(err);
return(Environment.TypeUnknownValue);
}
else if (symbol.Tag == FrontendSymbolType.Variable)
{
var err = ES_FrontendErrors.GenVarUsedAsType(typeParts [0].Text.Span.GetPooledString(), typeParts [0]);
errorList.Add(err);
return(Environment.TypeUnknownValue);
}
else if (symbol.Tag == FrontendSymbolType.Function)
{
var err = ES_FrontendErrors.GenFuncUsedAsType(typeParts [0].Text.Span.GetPooledString(), typeParts [0]);
errorList.Add(err);
return(Environment.TypeUnknownValue);
}
else if (symbol.Tag != FrontendSymbolType.Type)
{
throw new NotImplementedException("Not implemented?");
}
if (typeParts.Length > 1)
{
throw new NotImplementedException("[TODO] Nested types not implemented yet.");
}
return(symbol.MatchType());
}
}