structurizeConstructor function

Future<StructurizeResult> structurizeConstructor(DartType type, ConstructorElement constructorElement, SubjectGenContext<Element> context, CachedAliasCounter counter,)

Implementation

Future<StructurizeResult> structurizeConstructor(
    DartType type,
    ConstructorElement constructorElement,
    SubjectGenContext<Element> context,
    CachedAliasCounter counter) async {
  List<AliasImport> imports = [];
  List<IRStructureField> fields = [];
  var element = type.element! as ClassElement;
  var serialName = element.name;

  // Determine used constructor
  var constructorName = "";
  if (element.getNamedConstructor("dog") != null) {
    constructorElement = element.getNamedConstructor("dog")!;
    constructorName = ".dog";
  }

  for (var e in constructorElement.parameters) {
    String? fieldName;
    DartType? fieldType;
    Element? fieldElement;

    if (e is FieldFormalParameterElement) {
      fieldName = e.name;
      fieldType = e.type;
      fieldElement = e.field;
    } else if (e is SuperFormalParameterElement) {
      FieldFormalParameterElement resolveUntilFieldFormal(ParameterElement e) {
        if (e is FieldFormalParameterElement) return e;
        if (e is SuperFormalParameterElement) {
          return resolveUntilFieldFormal(e.superConstructorParameter!);
        }
        throw Exception("Can't resolve super formal field");
      }
      var field = resolveUntilFieldFormal(e.superConstructorParameter!).field;
      fieldName = field!.name;
      fieldType = field.type;
      fieldElement = field;
    } else {
      var parameterType = e.type;
      var namedField = element.getField(e.name);
      var namedGetter = element.lookUpGetter(e.name, element.library);
      if (namedField != null && namedGetter == null) {
        fieldName = e.name;
        fieldType = namedField.type;
        fieldElement = namedField;
        if (parameterType.nullabilitySuffix == NullabilitySuffix.question) {
          fieldType = parameterType;
        }
      } else {
        if (namedGetter != null) {
          fieldName = e.name;
          fieldType = namedGetter.returnType;
          fieldElement = namedGetter;
          if (parameterType.nullabilitySuffix == NullabilitySuffix.question) {
            fieldType = parameterType;
          }
        }
      }
    }
    if (fieldElement == null || fieldName == null || fieldType == null) {
      throw Exception(
        "Constructor fields must have a backing field or getter with the same name and type. Nullability may vary.");
    }
    var serialType = await getSerialType(fieldType, context);
    var iterableType = await getIterableType(fieldType, context);

    var optional = fieldType.nullabilitySuffix == NullabilitySuffix.question;
    if (fieldType is DynamicType) optional = true;

    var propertyName = fieldName;
    if (propertyNameChecker.hasAnnotationOf(fieldElement)) {
      var annotation = propertyNameChecker.annotationsOf(fieldElement).first;
      propertyName = annotation.getField("name")!.toStringValue()!;
    }

    var propertySerializer = "null";
    if (propertySerializerChecker.hasAnnotationOf(fieldElement)) {
      var serializerAnnotation =
          propertySerializerChecker.annotationsOf(fieldElement).first;
      propertySerializer =
          counter.get(serializerAnnotation.getField("type")!.toTypeValue()!);
    }

    fields.add(IRStructureField(
        fieldName,
        counter.get(fieldType),
        getTypeTree(fieldType).code(counter),
        propertySerializer,
        counter.get(serialType),
        iterableType,
        propertyName,
        optional,
        !isDogPrimitiveType(serialType),
        getRetainedAnnotationSourceArray(fieldElement, counter),
        mapChecker.isAssignableFrom(fieldType.element!)));
  }

  // Create proxy arguments
  var getters = fields.map((e) => e.accessor).toList();
  var activator =
      "return ${counter.get(element.thisType)}$constructorName(${constructorElement.parameters.mapIndexed((i, e) {
    var y = fields[i];
    if (e.isNamed) {
      if (y.iterableKind == IterableKind.none) return "${e.name}: list[$i]";
      if (y.optional) return "${e.name}: list[$i]?.cast<${y.serialType}>()";
      return "${e.name}: list[$i].cast<${y.serialType}>()";
    } else {
      if (y.iterableKind == IterableKind.none) return "list[$i]";
      if (y.optional) return "list[$i]?.cast<${y.serialType}>()";
      return "list[$i].cast<${y.serialType}>()";
    }
  }).join(", ")});";
  var isDataclass = dataclassChecker.isAssignableFromType(element.thisType);
  var structure = IRStructure(
      counter.get(type),
      isDataclass ? StructureConformity.dataclass : StructureConformity.basic,
      serialName,
      fields,
      getRetainedAnnotationSourceArray(element, counter));
  return StructurizeResult(imports, structure, getters, activator);
}