//$$$ Delete
/// <summary>
/// Traverse children using simple fhir path query.
/// Return selected elements, or null if not found.
/// </summary>
public bool Generate(CodeBlockNested block,
String methodModifiers,
String methodName,
ElementDefinitionNode node,
String path,
out Type leafType)
{
const String fcn = nameof(Generate);
if (block is null)
{
throw new ArgumentNullException(nameof(block));
}
if (methodModifiers is null)
{
throw new ArgumentNullException(nameof(methodModifiers));
}
if (methodName is null)
{
throw new ArgumentNullException(nameof(methodName));
}
if (node is null)
{
throw new ArgumentNullException(nameof(node));
}
if (path is null)
{
throw new ArgumentNullException(nameof(path));
}
//String fhirTypeName = node.FhirType.FriendlyName();
String fhirItemTypeName = node.FhirItemType.FriendlyName();
// we need to write header after we determine leaf node type.
CodeBlockNested methodHeaderBlock = block.AppendBlock();
block
.OpenBrace()
.BlankLine()
;
childBlock = block.AppendBlock();
String[] pathItems = path.Split('.');
Int32 i = 0;
if (pathItems[0] == node.Name)
{
i += 1;
}
Int32 resultCounter = 0;
leafType = null;
String resultThis = "head";
while (i < pathItems.Length)
{
resultCounter += 1;
String resultNext = $"result{resultCounter}";
String pathItem = pathItems[i++];
if (pathItem.StartsWith("resolve("))
{
this.gen.ConversionError(this.GetType().Name, fcn, $"TODO: FhirPath operator {pathItem} not implemented");
return(false);
}
else if (pathItem.StartsWith("extension(\""))
{
this.gen.ConversionError(this.GetType().Name, fcn, $"TODO: FhirPath operator {pathItem} not implemented");
return(false);
}
else if (pathItem.StartsWith("ofType("))
{
this.gen.ConversionError(this.GetType().Name, fcn, $"TODO: FhirPath operator {pathItem} not implemented");
return(false);
}
else
{
if (node.TryGetAnyChild(pathItem, out ElementDefinitionNode next) == false)
{
this.gen.ConversionError(this.GetType().Name, fcn, $"Child {pathItem} not found");
return(false);
}
Type nodeType = node.FhirItemType;
PropertyInfo childProperty = nodeType.GetPropertyByFhirName(pathItem);
String childPropertyName = childProperty.Name;
String childMethodName = GenerateGetChild(childPropertyName, nodeType, childProperty.PropertyType);
block.AppendCode($"IEnumerable<{next.FhirItemType.FriendlyName()}> {resultNext} = {childMethodName}({resultThis});");
resultThis = resultNext;
node = next;
}
}
block
.AppendCode($"return {resultThis};")
.CloseBrace()
;
leafType = node.FhirItemType;
methodHeaderBlock
.AppendCode($"{methodModifiers} IEnumerable<{leafType.FriendlyName()}> {methodName}(IEnumerable<{fhirItemTypeName}> head)")
;
return(true);
}
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);
}
void DefineClassFields(
CodeBlockNested subClassBlock,
CodeBlockNested fieldsBlock,
CodeBlockNested constructorBlock,
CodeBlockNested writeBlock,
ElementDefinition[] elements,
String basePath,
String className,
ref Int32 index)
{
while (index < elements.Length)
{
ElementDefinition ed = elements[index];
// We know when we are at the end of a sub class, when the
// path does no longer start with subPath.
String path = ed.Path;
if (ed.Path.StartsWith(basePath) == false)
{
return;
}
path = path.Substring(basePath.Length);
String elementName = ElementName(ed.Path.LastPathPart());
fieldsBlock
.AppendComment($"{index}. {elements[index].Path}")
.AppendCode($"public ElementDefinitionInfo {elementName};")
;
writeBlock
.AppendCode($"{elementName}.Write(sDef);")
;
Int32 min = 0;
Int32 max = -1;
if (ed.Min.HasValue)
{
min = ed.Min.Value;
}
if ((String.IsNullOrEmpty(ed.Max) == false) && (ed.Max != "*"))
{
max = Int32.Parse(ed.Max);
}
constructorBlock
.OpenBrace()
.AppendComment($"{index}. {elements[index].Path}")
.AppendCode($"this.{elementName} = new ElementDefinitionInfo")
.OpenBrace()
.AppendCode($"Name = \"{elementName}\",")
.AppendCode($"Path= \"{ed.Path}\",")
.AppendCode($"Id = \"{ed.ElementId}\",")
.AppendCode($"Min = {min},")
.AppendCode($"Max = {max},")
.AppendCode($"Types = new BaseType[]")
.OpenBrace()
.DefineBlock(out CodeBlockNested typesBlock)
.CloseBrace("")
.CloseBrace(";")
.CloseBrace("")
;
// If next elements starts with this items path, then this is a
// subelement, so start creating sub class.
if (
(index < elements.Length - 1) &&
(elements[index + 1].Path.StartsWith($"{ed.Path}."))
)
{
String subClassName = TypeName(path.LastPathPart());
typesBlock
.AppendCode($"new {subClassName}")
.OpenBrace()
.CloseBrace()
;
DefineClass(subClassBlock, elements, ref index, ed.Path, subClassName, ComplexBase, out CodeBlockNested dummy);
}
else
{
for (Int32 typeIndex = 0; typeIndex < ed.Type.Count; typeIndex += 1)
{
String sep = typeIndex == (ed.Type.Count - 1) ? "" : ",";
ElementDefinition.TypeRefComponent type = ed.Type[typeIndex];
switch (type.Code)
{
case null:
break;
case "boolean":
case "integer":
case "decimal":
case "uri":
case "string":
case "base64Binary":
case "instant":
case "date":
case "dateTime":
case "time":
case "oid":
case "id":
case "markdown":
case "unsignedInt":
case "positiveInt":
case "xhtml":
case "code":
case "uuid":
case "url":
case "canonical":
{
String sep1 = "";
typesBlock
.AppendCode($"new {PrimitiveNameSpace}.{PrimitiveName(type.Code)}")
.OpenBrace()
.AppendProfiles(type.Profile, ref sep1)
.AppendTargetProfiles(type.TargetProfile, ref sep1)
.CloseBrace(sep)
;
}
sep = ", ";
break;
case "CodeableConcept":
case "Coding":
{
String sep1 = "";
typesBlock
.AppendCode($"new {ComplexNameSpace}.{TypeName(type.Code)}")
.OpenBrace()
.AppendProfiles(type.Profile, ref sep1)
.AppendTargetProfiles(type.TargetProfile, ref sep1)
.CloseBrace(sep)
;
}
sep = ", ";
break;
case "Resource":
{
String sep1 = "";
typesBlock
.AppendCode($"new {ResourceNameSpace}.{ResourceName(type.Code)}")
.OpenBrace()
.AppendProfiles(type.Profile, ref sep1)
.AppendTargetProfiles(type.TargetProfile, ref sep1)
.CloseBrace(sep)
;
}
sep = ", ";
break;
case "Reference":
{
String sep1 = "";
typesBlock
.AppendCode($"new {ComplexNameSpace}.{TypeName(type.Code)}")
.OpenBrace()
.AppendProfiles(type.Profile, ref sep1)
.AppendTargetProfiles(type.TargetProfile, ref sep1)
.CloseBrace(sep)
;
}
sep = ", ";
break;
default:
typesBlock
.AppendCode($"new {ComplexNameSpace}.{TypeName(type.Code)}")
.OpenBrace()
.CloseBrace(sep)
;
sep = ", ";
break;
}
}
index += 1;
}
}
}
