bool DefineSliceOnValueDiscriminator(Int32 index,
CodeBlockNested sliceDiscriminators,
ElementDefinitionNode sliceNode,
String varName,
ElementDefinition.DiscriminatorComponent discriminator,
String valueFilterMethod,
String leafType)
{
const String fcn = nameof(DefineSliceOnValueDiscriminator);
var selectedNodes = sliceNode.Select(discriminator.Path).ToArray();
var fixedNodes = selectedNodes.FixedValues().ToArray();
Element fixedValue = fixedNodes.SingleOrDefault();
if (fixedValue == null)
{
this.gen.ConversionError(this.GetType().Name, fcn, $"Slice node lacks fixed element {discriminator.Path}");
return(false);
}
String sliceName = sliceNode.Element.SliceName;
CodeBlockNested valueMethodBlock = sliceClassMethods.AppendBlock();
valueFilterMethod = CSMisc.ValueFilterName(CSMisc.MakePath(sliceNode.SlicePath(), discriminator.Path));
// Note: We are defining method here, after we know the return value type.
valueMethodBlock
.BlankLine()
.SummaryOpen()
.AppendCode($"/// Return all elements for discriminator # {index+1}'")
.SummaryLines(discriminator.ToFormatedJson())
.SummaryClose()
;
{
GenerateFhirPathSearch g = new GenerateFhirPathSearch(this.gen);
if (g.Generate(valueMethodBlock, "static", valueFilterMethod, elementNode, discriminator.Path, out Type leaf) == false)
{
return(false);
}
leafType = leaf.FriendlyName();
}
String tempVarName = $"sliceOnValueDiscriminator";
sliceDiscriminators
.OpenBrace()
.AppendLine($"/// Define discriminator'")
.AppendLines("/// ", discriminator.ToFormatedJson().ToLines())
.AppendCode($"var {tempVarName} = new SliceOnValueDiscriminator<{baseItemTypeName}, {leafType}>()")
.OpenBrace()
.AppendCode($"Path = \"{discriminator.Path}\",")
.AppendCode($"ValueFilter = {valueFilterMethod}")
.CloseBrace(";")
;
ElementFixCode.Construct(sliceDiscriminators, fixedValue, $"{tempVarName}.Pattern", out String propertyType);
sliceDiscriminators
.AppendCode($"{varName} = {tempVarName};")
.CloseBrace("")
;
return(true);
}
public static String ValueFilterName(String[] path) => CSMisc.PathName("ValueFilter", path);
