generateConverterFunctions static method

Implementation

static String generateConverterFunctions(StringBuffer converterBuffer, final ValidClassHolder holder) {

  //Registry (map):
  converterBuffer.writeln("// - - - - - - - Registry - - - - - - -");
  converterBuffer.writeln("final Map<Type, Map<String, dynamic> Function(dynamic)> toMapRegistry = {");
  for (final aClass in holder.getAllValidClasses()) {
    converterBuffer.writeln("\t${aClass.displayName}: (object) => (object as ${aClass.displayName}).toMap(),");
  }
  converterBuffer.writeln("};");
  converterBuffer.writeln();

  converterBuffer.writeln("final Map<Type, dynamic Function(Map<String, dynamic>)> fromMapRegistry = {");
  for (final aClass in holder.getAllValidClasses()) {
    converterBuffer.writeln("\t${aClass.displayName}: (map) => ${aClass.displayName}Model.fromMap(map),");
  }
  converterBuffer.writeln("};");
  converterBuffer.writeln();

  //Registry converter function, serializer:
  converterBuffer.writeln("Map<String, dynamic> convertToMap(dynamic object) {");
  converterBuffer.writeln("\tfinal serializer = toMapRegistry[object.runtimeType];");
  converterBuffer.writeln("\tif (serializer != null) {");
  converterBuffer.writeln("\t\treturn serializer(object);");
  converterBuffer.writeln("\t}");
  converterBuffer.writeln("\tthrow UnsupportedError('toMap() not implemented for type: \${object.runtimeType}');");
  converterBuffer.writeln("}");
  converterBuffer.writeln();

  //Registry converter function, deserializer:
  converterBuffer.writeln("T convertFromMap<T>(Map<String, dynamic> map) {");
  converterBuffer.writeln("\tfinal deserializer = fromMapRegistry[T];");
  converterBuffer.writeln("\tif (deserializer == null) {");
  converterBuffer.writeln("\t\tthrow UnsupportedError('fromMap() not implemented for type: \${T.toString()}');");
  converterBuffer.writeln("\t}");
  converterBuffer.writeln("\treturn deserializer(map) as T;");
  converterBuffer.writeln("}");
  converterBuffer.writeln();

  //Generate serializer registrations for each class:
  converterBuffer.writeln("registerClasses() {");
  //Firestore:
  for (final aClass in holder.fsValidClasses) {
    converterBuffer.writeln("\tFS.registerSerializer<${aClass.displayName}>((object) => object.toMap());");
    converterBuffer.writeln("\tFS.registerDeserializer<${aClass.displayName}>((map) => ${aClass.displayName}Model.fromMap(map));");
  }
  //Realtime Database:
  for (final aClass in holder.rdbValidClasses) {
    converterBuffer.writeln("\tRDB.registerSerializer<${aClass.displayName}>((object) => object.toMap());");
    converterBuffer.writeln("\tRDB.registerDeserializer<${aClass.displayName}>((map) => ${aClass.displayName}Model.fromMap(map));");
  }
  converterBuffer.writeln("}");
  converterBuffer.writeln();

  return converterBuffer.toString();
}