public ExprDotForgeGetCollectionEval(
ExprDotForgeGetCollection forge,
ExprEvaluator indexExpression)
{
this.forge = forge;
this.indexExpression = indexExpression;
}
public static CodegenExpression Codegen(
ExprDotForgeGetCollection forge,
CodegenExpression inner,
Type innerType,
CodegenMethodScope codegenMethodScope,
ExprForgeCodegenSymbol exprSymbol,
CodegenClassScope codegenClassScope)
{
var methodNode = codegenMethodScope.MakeChild(
forge.TypeInfo.GetNormalizedClass(),
typeof(ExprDotForgeGetCollectionEval),
codegenClassScope)
.AddParam(innerType, "target");
var block = methodNode.Block;
if (!innerType.IsPrimitive)
{
block.IfRefNullReturnNull("target");
}
var targetType = EPTypeHelper.GetCodegenReturnType(forge.TypeInfo);
block.DeclareVar <int>("index", forge.IndexExpression.EvaluateCodegen(typeof(int), methodNode, exprSymbol, codegenClassScope))
.MethodReturn(
CodegenLegoCast.CastSafeFromObjectType(
targetType,
StaticMethod(
typeof(ExprDotForgeGetCollectionEval),
"CollectionElementAt",
Ref("target"),
Ref("index"))));
return(LocalMethod(methodNode, inner));
}
public static ExprDotNodeRealizedChain GetChainEvaluators(
int?streamOfProviderIfApplicable,
EPType inputType,
IList <Chainable> chainSpec,
ExprValidationContext validationContext,
bool isDuckTyping,
ExprDotNodeFilterAnalyzerInput inputDesc)
{
var methodForges = new List <ExprDotForge>();
var currentInputType = inputType;
EnumMethodDesc lastLambdaFunc = null;
var lastElement = chainSpec.IsEmpty() ? null : chainSpec[chainSpec.Count - 1];
FilterExprAnalyzerAffector filterAnalyzerDesc = null;
Deque <Chainable> chainSpecStack = new ArrayDeque <Chainable>(chainSpec);
while (!chainSpecStack.IsEmpty())
{
var chainElement = chainSpecStack.RemoveFirst();
var parameters = chainElement.GetParametersOrEmpty();
var chainElementName = chainElement.GetRootNameOrEmptyString();
var last = chainSpecStack.IsEmpty();
lastLambdaFunc = null; // reset
// compile parameters for chain element
var paramForges = new ExprForge[parameters.Count];
var paramTypes = new Type[parameters.Count];
for (var i = 0; i < parameters.Count; i++)
{
paramForges[i] = parameters[i].Forge;
paramTypes[i] = paramForges[i].EvaluationType;
}
// check if special 'size' method
if (currentInputType is ClassMultiValuedEPType)
{
var type = (ClassMultiValuedEPType)currentInputType;
if (string.Equals(chainElementName, "size", StringComparison.InvariantCultureIgnoreCase) &&
paramTypes.Length == 0 &&
lastElement == chainElement)
{
ExprDotForge size;
var containerType = ((ClassMultiValuedEPType)currentInputType).Container;
if (containerType.IsArray)
{
size = new ExprDotForgeSizeArray();
}
else
{
size = new ExprDotForgeSizeCollection();
}
methodForges.Add(size);
currentInputType = size.TypeInfo;
continue;
}
if (string.Equals(chainElementName, "get", StringComparison.InvariantCultureIgnoreCase) &&
paramTypes.Length == 1 &&
paramTypes[0].GetBoxedType() == typeof(int?))
{
ExprDotForge get;
var componentType = type.Component.GetBoxedType();
if (type.Container.IsArray)
{
get = new ExprDotForgeGetArray(paramForges[0], componentType);
}
else
{
get = new ExprDotForgeGetCollection(paramForges[0], componentType);
}
methodForges.Add(get);
currentInputType = get.TypeInfo;
continue;
}
if (chainElement is ChainableArray && type.Container.IsArray)
{
var array = (ChainableArray)chainElement;
var typeInfo = currentInputType;
var indexExpr = ChainableArray.ValidateSingleIndexExpr(
array.Indexes,
() => "operation on type " + typeInfo.ToTypeDescriptive());
var componentType = type.Component.GetBoxedType();
var get = new ExprDotForgeGetArray(indexExpr.Forge, componentType);
methodForges.Add(get);
currentInputType = get.TypeInfo;
continue;
}
}
// determine if there is a matching method or property
var methodTarget = GetMethodTarget(currentInputType);
var matchingMethod = false;
if (methodTarget != null && (!(chainElement is ChainableArray)))
{
try {
GetValidateMethodDescriptor(methodTarget, chainElementName, parameters, validationContext);
matchingMethod = true;
}
catch (ExprValidationException) {
// expected
}
}
if (EnumMethodResolver.IsEnumerationMethod(chainElementName, validationContext.ImportService) &&
(!matchingMethod || methodTarget.IsArray || methodTarget.IsGenericCollection()))
{
var enumerationMethod = EnumMethodResolver.FromName(chainElementName, validationContext.ImportService);
if (enumerationMethod == null)
{
throw new EPException("unable to determine enumeration method from name");
}
var eval = enumerationMethod.Factory.Invoke(chainElement.GetParametersOrEmpty().Count);
if (currentInputType is ClassEPType classEpType && classEpType.Clazz.IsGenericCollection() && !classEpType.Clazz.IsArray)
{
currentInputType = EPTypeHelper.CollectionOfSingleValue(typeof(object), null);
}
eval.Init(streamOfProviderIfApplicable, enumerationMethod, chainElementName, currentInputType, parameters, validationContext);
currentInputType = eval.TypeInfo;
if (currentInputType == null)
{
throw new IllegalStateException("Enumeration method '" + chainElementName + "' has not returned type information");
}
methodForges.Add(eval);
lastLambdaFunc = enumerationMethod;
continue;
}
// resolve datetime
if (DatetimeMethodResolver.IsDateTimeMethod(chainElementName, validationContext.ImportService) &&
(!matchingMethod ||
methodTarget == typeof(DateTimeEx) ||
methodTarget == typeof(DateTimeOffset) ||
methodTarget == typeof(DateTime)))
{
var datetimeMethod = DatetimeMethodResolver.FromName(chainElementName, validationContext.ImportService);
var datetimeImpl = ExprDotDTFactory.ValidateMake(
validationContext.StreamTypeService,
chainSpecStack,
datetimeMethod,
chainElementName,
currentInputType,
parameters,
inputDesc,
validationContext.ImportService.TimeAbacus,
validationContext.TableCompileTimeResolver,
validationContext.ImportService,
validationContext.StatementRawInfo);
currentInputType = datetimeImpl.ReturnType;
if (currentInputType == null)
{
throw new IllegalStateException(
"Date-time method '" + chainElementName + "' has not returned type information");
}
methodForges.Add(datetimeImpl.Forge);
filterAnalyzerDesc = datetimeImpl.IntervalFilterDesc;
continue;
}
// try to resolve as property if the last method returned a type
if (currentInputType is EventEPType)
{
if (chainElement is ChainableArray)
{
throw new ExprValidationException("Could not perform array operation on type " + currentInputType.ToTypeDescriptive());
}
var inputEventType = (EventTypeSPI)((EventEPType)currentInputType).EventType;
var type = inputEventType.GetPropertyType(chainElementName);
var getter = inputEventType.GetGetterSPI(chainElementName);
var fragmentType = inputEventType.GetFragmentType(chainElementName);
ExprDotForge forge;
if (type != null && getter != null)
{
if (fragmentType == null || last)
{
forge = new ExprDotForgeProperty(getter, EPTypeHelper.SingleValue(type.GetBoxedType()));
currentInputType = forge.TypeInfo;
}
else
{
if (!fragmentType.IsIndexed)
{
currentInputType = EPTypeHelper.SingleEvent(fragmentType.FragmentType);
}
else
{
currentInputType = EPTypeHelper.ArrayOfEvents(fragmentType.FragmentType);
}
forge = new ExprDotForgePropertyFragment(getter, currentInputType);
}
methodForges.Add(forge);
continue;
}
}
if (currentInputType is EventMultiValuedEPType eventMultiValuedEpType && chainElement is ChainableArray chainableArray)
{
var inputEventType = (EventTypeSPI)eventMultiValuedEpType.Component;
var typeInfo = currentInputType;
var indexExpr = ChainableArray.ValidateSingleIndexExpr(
chainableArray.Indexes,
() => "operation on type " + typeInfo.ToTypeDescriptive());
currentInputType = EPTypeHelper.SingleEvent(inputEventType);
var forge = new ExprDotForgeEventArrayAtIndex(currentInputType, indexExpr);
methodForges.Add(forge);
continue;
}
// Finally try to resolve the method
if (methodTarget != null && !(chainElement is ChainableArray))
{
try {
// find descriptor again, allow for duck typing
var desc = GetValidateMethodDescriptor(methodTarget, chainElementName, parameters, validationContext);
paramForges = desc.ChildForges;
ExprDotForge forge;
if (currentInputType is ClassEPType)
{
// if followed by an enumeration method, convert array to collection
if (desc.ReflectionMethod.ReturnType.IsArray &&
!chainSpecStack.IsEmpty() &&
EnumMethodResolver.IsEnumerationMethod(chainSpecStack.First.GetRootNameOrEmptyString(), validationContext.ImportService))
{
forge = new ExprDotMethodForgeNoDuck(
validationContext.StatementName,
desc.ReflectionMethod,
paramForges,
ExprDotMethodForgeNoDuck.DuckType.WRAPARRAY);
}
else
{
forge = new ExprDotMethodForgeNoDuck(
validationContext.StatementName,
desc.ReflectionMethod,
paramForges,
ExprDotMethodForgeNoDuck.DuckType.PLAIN);
}
}
else
{
forge = new ExprDotMethodForgeNoDuck(
validationContext.StatementName,
desc.ReflectionMethod,
paramForges,
ExprDotMethodForgeNoDuck.DuckType.UNDERLYING);
}
methodForges.Add(forge);
currentInputType = forge.TypeInfo;
}
catch (Exception e) {
if (!isDuckTyping)
{
throw new ExprValidationException(e.Message, e);
}
var duck = new ExprDotMethodForgeDuck(
validationContext.StatementName,
validationContext.ImportService,
chainElementName,
paramTypes,
paramForges);
methodForges.Add(duck);
currentInputType = duck.TypeInfo;
}
continue;
}
string message;
if (!(chainElement is ChainableArray))
{
message = "Could not find event property or method named '" + chainElementName + "' in " + currentInputType.ToTypeDescriptive();
}
else
{
message = "Could not perform array operation on type " + currentInputType.ToTypeDescriptive();
}
throw new ExprValidationException(message);
}
var intermediateEvals = methodForges.ToArray();
if (lastLambdaFunc != null)
{
ExprDotForge finalEval = null;
if (currentInputType is EventMultiValuedEPType mvType)
{
var tableMetadata = validationContext.TableCompileTimeResolver.ResolveTableFromEventType(mvType.Component);
if (tableMetadata != null)
{
finalEval = new ExprDotForgeUnpackCollEventBeanTable(mvType.Component, tableMetadata);
}
else
{
finalEval = new ExprDotForgeUnpackCollEventBean(mvType.Component);
}
}
else if (currentInputType is EventEPType epType)
{
var tableMetadata = validationContext.TableCompileTimeResolver.ResolveTableFromEventType(epType.EventType);
if (tableMetadata != null)
{
finalEval = new ExprDotForgeUnpackBeanTable(epType.EventType, tableMetadata);
}
else
{
finalEval = new ExprDotForgeUnpackBean(epType.EventType);
}
}
if (finalEval != null)
{
methodForges.Add(finalEval);
}
}
var unpackingForges = methodForges.ToArray();
return(new ExprDotNodeRealizedChain(intermediateEvals, unpackingForges, filterAnalyzerDesc));
}