private static bool TestTypeMatch(this IEdmType expressionType, IEdmType assertedType, EdmLocation location, bool matchExactly, out IEnumerable <EdmError> discoveredErrors)
{
if (matchExactly)
{
if (!expressionType.IsEquivalentTo(assertedType))
{
discoveredErrors = new EdmError[] { new EdmError(location, EdmErrorCode.ExpressionNotValidForTheAssertedType, Edm.Strings.EdmModel_Validator_Semantic_ExpressionNotValidForTheAssertedType) };
return(false);
}
}
else
{
// A bad type matches anything (so as to avoid generating spurious errors).
if (expressionType.TypeKind == EdmTypeKind.None || expressionType.IsBad())
{
discoveredErrors = Enumerable.Empty <EdmError>();
return(true);
}
if (expressionType.TypeKind == EdmTypeKind.Primitive && assertedType.TypeKind == EdmTypeKind.Primitive)
{
IEdmPrimitiveType primitiveExpressionType = expressionType as IEdmPrimitiveType;
IEdmPrimitiveType primitiveAssertedType = assertedType as IEdmPrimitiveType;
if (!primitiveExpressionType.PrimitiveKind.PromotesTo(primitiveAssertedType.PrimitiveKind))
{
discoveredErrors = new EdmError[] { new EdmError(location, EdmErrorCode.ExpressionPrimitiveKindNotValidForAssertedType, Edm.Strings.EdmModel_Validator_Semantic_ExpressionPrimitiveKindCannotPromoteToAssertedType(expressionType.ToTraceString(), assertedType.ToTraceString())) };
return(false);
}
}
else
{
if (!expressionType.IsOrInheritsFrom(assertedType))
{
discoveredErrors = new EdmError[] { new EdmError(location, EdmErrorCode.ExpressionNotValidForTheAssertedType, Edm.Strings.EdmModel_Validator_Semantic_ExpressionNotValidForTheAssertedType) };
return(false);
}
}
}
discoveredErrors = Enumerable.Empty <EdmError>();
return(true);
}