private static bool TypeConformToBase(IList <ICompiledType> derivedTypeList, IList <ICompiledType> baseTypeList, IErrorList errorList, ISource sourceLocation)
{
bool Success = false;
IErrorList DirectErrorList = new ErrorList();
for (int derivedIndex = 0; derivedIndex < derivedTypeList.Count; derivedIndex++)
{
ICompiledType DerivedType = derivedTypeList[derivedIndex];
for (int baseIndex = 0; baseIndex < baseTypeList.Count; baseIndex++)
{
ICompiledType BaseType = baseTypeList[baseIndex];
if (derivedIndex == 0 && baseIndex == 0)
{
Success |= ConvertedTypeConformToBase(DerivedType, BaseType, DirectErrorList, sourceLocation);
}
else
{
Success |= ConvertedTypeConformToBase(DerivedType, BaseType, ErrorList.Ignored, ErrorList.NoLocation);
}
}
}
if (!Success)
{
errorList.AddErrors(DirectErrorList);
}
return(Success);
}
/// <summary></summary>
protected virtual bool InferTemplates(ref bool exit, IList <ISource> unresolvedSourceList, IErrorList errorList)
{
bool Success = true;
List <ISource> FailedSourceList = new List <ISource>();
for (int i = 0; i < RuleTemplateList.Count; i++)
{
IRuleTemplate Rule = RuleTemplateList[i];
/*if (Rule is IQueryOverloadTypeConformanceRuleTemplate AsRuleTemplate)
* {
*
* }*/
foreach (ISource Source in unresolvedSourceList)
{
if (!Rule.NodeType.IsAssignableFrom(Source.GetType()))
{
continue;
}
bool IsNoDestinationSet = Rule.IsNoDestinationSet(Source);
if (IsNoDestinationSet)
{
bool AreAllSourcesReady = Rule.AreAllSourcesReady(Source, out IDictionary <ISourceTemplate, object> DataList);
bool NoError = Rule.ErrorList.IsEmpty;
if (!AreAllSourcesReady && !FailedSourceList.Contains(Source))
{
FailedSourceList.Add(Source);
}
if (AreAllSourcesReady && NoError)
{
if (Rule.CheckConsistency(Source, DataList, out object data))
{
Debug.Assert(Rule.ErrorList.IsEmpty);
Rule.Apply(Source, data);
Debug.Assert(Rule.AreAllDestinationsSet(Source));
exit = false;
}
else
{
Debug.Assert(!Rule.ErrorList.IsEmpty);
errorList.AddErrors(Rule.ErrorList);
Success = false;
}
}
}
}
}
return(Success);
}
/// <summary>
/// Execute all rules until the source list is exhausted.
/// </summary>
/// <param name="errorList">List of errors found.</param>
/// <param name="passName">The pass name.</param>
/// <returns>True if there is no source left to process.</returns>
public virtual bool Solve(IErrorList errorList, string passName)
{
bool Success;
bool?LastTryResult = null;
for (;;)
{
foreach (IRuleTemplate Rule in RuleTemplateList)
{
Rule.Clear();
}
IErrorList TryErrorList = new ErrorList();
bool TryResult = SolveWithRetry(TryErrorList, passName);
if (Retries == 0)
{
errorList.AddErrors(TryErrorList);
Success = TryResult;
break;
}
// Errors can differ, but success or failure must not.
if (!LastTryResult.HasValue)
{
LastTryResult = TryResult;
}
Debug.Assert(TryResult == LastTryResult.Value);
// Reset sources so we restart inference from a fresh state.
ResetSources();
ShuffleRules(RuleTemplateList, Retries);
if (Retries <= 0)
{
throw new InvalidOperationException("Invalid inference retries count.");
}
Retries--;
}
Debug.Assert(Success || !errorList.IsEmpty);
return(Success);
}
private static bool FunctionTypeConformToPropertyType(IFunctionType derivedType, IPropertyType baseType, IErrorList errorList, ISource sourceLocation)
{
bool Result = true;
Debug.Assert(derivedType.ResolvedBaseType.IsAssigned);
Debug.Assert(baseType.ResolvedBaseType.IsAssigned);
Result &= TypeConformToBase(derivedType.ResolvedBaseType.Item, baseType.ResolvedBaseType.Item, errorList, sourceLocation, isConversionAllowed: false);
if (baseType.PropertyKind != BaseNode.UtilityType.ReadOnly)
{
errorList.AddError(new ErrorTypeKindConformance(sourceLocation, derivedType, baseType));
Result = false;
}
IErrorList AllOverloadErrorList = new ErrorList();
bool MatchingDerivedOverload = false;
foreach (IQueryOverloadType DerivedOverload in derivedType.OverloadList)
{
IErrorList OverloadErrorList = new ErrorList();
if (!QueryOverloadHasPropertyConformingBase(DerivedOverload, baseType, OverloadErrorList, sourceLocation))
{
Debug.Assert(!OverloadErrorList.IsEmpty);
AllOverloadErrorList.AddError(OverloadErrorList.At(0));
}
else
{
MatchingDerivedOverload = true;
}
}
if (!MatchingDerivedOverload)
{
errorList.AddErrors(AllOverloadErrorList);
errorList.AddError(new ErrorTypeKindConformance(sourceLocation, derivedType, baseType));
Result = false;
}
return(Result);
}
private static bool ProcedureTypeConformToProcedureType(IProcedureType derivedType, IProcedureType baseType, IErrorList errorList, ISource sourceLocation)
{
bool Result = true;
Debug.Assert(derivedType.ResolvedBaseType.IsAssigned);
Debug.Assert(baseType.ResolvedBaseType.IsAssigned);
Result &= TypeConformToBase(derivedType.ResolvedBaseType.Item, baseType.ResolvedBaseType.Item, errorList, sourceLocation, isConversionAllowed: false);
IErrorList AllOverloadErrorList = new ErrorList();
foreach (ICommandOverloadType BaseOverload in baseType.OverloadList)
{
bool MatchingDerivedOverload = false;
foreach (ICommandOverloadType DerivedOverload in derivedType.OverloadList)
{
IErrorList OverloadErrorList = new ErrorList();
if (!CommandOverloadConformToBase(DerivedOverload, BaseOverload, OverloadErrorList, DerivedOverload))
{
Debug.Assert(!OverloadErrorList.IsEmpty);
AllOverloadErrorList.AddError(OverloadErrorList.At(0));
}
else
{
MatchingDerivedOverload = true;
}
}
if (!MatchingDerivedOverload)
{
errorList.AddErrors(AllOverloadErrorList);
errorList.AddError(new ErrorOverloadMismatchConformance(sourceLocation, derivedType, baseType));
Result = false;
}
}
return(Result);
}