text: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  
  #include <stdio.h>
  #include <plc4c/spi/evaluation_helper.h>
  #include "s7_parameter_user_data_item.h"
  
  // Code generated by code-generation. DO NOT EDIT.
  
  // Array of discriminator values that match the enum type constants.
  // (The order is identical to the enum constants so we can use the
  // enum constant to directly access a given types discriminator values)
  const plc4c_s7_read_write_s7_parameter_user_data_item_discriminator plc4c_s7_read_write_s7_parameter_user_data_item_discriminators[] = {
    {/* plc4c_s7_read_write_s7_parameter_user_data_item_cpu_functions */
     .itemType = 0x12 }
  
  };
  
  // Function returning the discriminator values for a given type constant.
  plc4c_s7_read_write_s7_parameter_user_data_item_discriminator plc4c_s7_read_write_s7_parameter_user_data_item_get_discriminator(plc4c_s7_read_write_s7_parameter_user_data_item_type type) {
    return plc4c_s7_read_write_s7_parameter_user_data_item_discriminators[type];
  }
  
  // Create an empty NULL-struct
  static const plc4c_s7_read_write_s7_parameter_user_data_item plc4c_s7_read_write_s7_parameter_user_data_item_null_const;
  
  plc4c_s7_read_write_s7_parameter_user_data_item plc4c_s7_read_write_s7_parameter_user_data_item_null() {
    return plc4c_s7_read_write_s7_parameter_user_data_item_null_const;
  }
  
  
  // Parse function.
  plc4c_return_code plc4c_s7_read_write_s7_parameter_user_data_item_parse(plc4c_spi_read_buffer* readBuffer, plc4c_s7_read_write_s7_parameter_user_data_item** _message) {
    uint16_t startPos = plc4c_spi_read_get_pos(readBuffer);
    plc4c_return_code _res = OK;
  
    // Allocate enough memory to contain this data structure.
    (*_message) = malloc(sizeof(plc4c_s7_read_write_s7_parameter_user_data_item));
    if(*_message == NULL) {
      return NO_MEMORY;
    }
          // Discriminator Field (itemType)
  
    // Discriminator Field (itemType) (Used as input to a switch field)
    uint8_t itemType = 0;
    _res = plc4c_spi_read_unsigned_byte(readBuffer, 8, (uint8_t*) &itemType);
    if(_res != OK) {
      return _res;
    }
  
      // Switch Field (Depending on the discriminator values, passes the instantiation to a sub-type)
  if( itemType == 0x12 ) { /* S7ParameterUserDataItemCPUFunctions */
      (*_message)->_type = plc4c_s7_read_write_s7_parameter_user_data_item_type_plc4c_s7_read_write_s7_parameter_user_data_item_cpu_functions;
  
    // Implicit Field (itemLength) (Used for parsing, but its value is not stored as it's implicitly given by the objects content)
    uint8_t itemLength = 0;
    _res = plc4c_spi_read_unsigned_byte(readBuffer, 8, (uint8_t*) &itemLength);
    if(_res != OK) {
      return _res;
    }
  
  
    // Simple Field (method)
    uint8_t method = 0;
    _res = plc4c_spi_read_unsigned_byte(readBuffer, 8, (uint8_t*) &method);
    if(_res != OK) {
      return _res;
    }
    (*_message)->s7_parameter_user_data_item_cpu_functions_method = method;
  
  
    // Simple Field (cpuFunctionType)
    uint8_t cpuFunctionType = 0;
    _res = plc4c_spi_read_unsigned_byte(readBuffer, 4, (uint8_t*) &cpuFunctionType);
    if(_res != OK) {
      return _res;
    }
    (*_message)->s7_parameter_user_data_item_cpu_functions_cpu_function_type = cpuFunctionType;
  
  
    // Simple Field (cpuFunctionGroup)
    uint8_t cpuFunctionGroup = 0;
    _res = plc4c_spi_read_unsigned_byte(readBuffer, 4, (uint8_t*) &cpuFunctionGroup);
    if(_res != OK) {
      return _res;
    }
    (*_message)->s7_parameter_user_data_item_cpu_functions_cpu_function_group = cpuFunctionGroup;
  
  
    // Simple Field (cpuSubfunction)
    uint8_t cpuSubfunction = 0;
    _res = plc4c_spi_read_unsigned_byte(readBuffer, 8, (uint8_t*) &cpuSubfunction);
    if(_res != OK) {
      return _res;
    }
    (*_message)->s7_parameter_user_data_item_cpu_functions_cpu_subfunction = cpuSubfunction;
  
  
    // Simple Field (sequenceNumber)
    uint8_t sequenceNumber = 0;
    _res = plc4c_spi_read_unsigned_byte(readBuffer, 8, (uint8_t*) &sequenceNumber);
    if(_res != OK) {
      return _res;
    }
    (*_message)->s7_parameter_user_data_item_cpu_functions_sequence_number = sequenceNumber;
  
  
    // Optional Field (dataUnitReferenceNumber) (Can be skipped, if a given expression evaluates to false)
    uint8_t* dataUnitReferenceNumber = NULL;
    if((cpuFunctionType) == (8)) {
      dataUnitReferenceNumber = malloc(sizeof(uint8_t));
      if(dataUnitReferenceNumber == NULL) {
        return NO_MEMORY;
      }
      *dataUnitReferenceNumber = 0;
      _res = plc4c_spi_read_unsigned_byte(readBuffer, 8, (uint8_t*) dataUnitReferenceNumber);
      if(_res != OK) {
        return _res;
      }
      (*_message)->s7_parameter_user_data_item_cpu_functions_data_unit_reference_number = dataUnitReferenceNumber;
    } else {
      (*_message)->s7_parameter_user_data_item_cpu_functions_data_unit_reference_number = NULL;
    }
  
  
    // Optional Field (lastDataUnit) (Can be skipped, if a given expression evaluates to false)
    uint8_t* lastDataUnit = NULL;
    if((cpuFunctionType) == (8)) {
      lastDataUnit = malloc(sizeof(uint8_t));
      if(lastDataUnit == NULL) {
        return NO_MEMORY;
      }
      *lastDataUnit = 0;
      _res = plc4c_spi_read_unsigned_byte(readBuffer, 8, (uint8_t*) lastDataUnit);
      if(_res != OK) {
        return _res;
      }
      (*_message)->s7_parameter_user_data_item_cpu_functions_last_data_unit = lastDataUnit;
    } else {
      (*_message)->s7_parameter_user_data_item_cpu_functions_last_data_unit = NULL;
    }
  
  
    // Optional Field (errorCode) (Can be skipped, if a given expression evaluates to false)
    uint16_t* errorCode = NULL;
    if((cpuFunctionType) == (8)) {
      errorCode = malloc(sizeof(uint16_t));
      if(errorCode == NULL) {
        return NO_MEMORY;
      }
      *errorCode = 0;
      _res = plc4c_spi_read_unsigned_short(readBuffer, 16, (uint16_t*) errorCode);
      if(_res != OK) {
        return _res;
      }
      (*_message)->s7_parameter_user_data_item_cpu_functions_error_code = errorCode;
    } else {
      (*_message)->s7_parameter_user_data_item_cpu_functions_error_code = NULL;
    }
    }
  
    return OK;
  }
  
  plc4c_return_code plc4c_s7_read_write_s7_parameter_user_data_item_serialize(plc4c_spi_write_buffer* writeBuffer, plc4c_s7_read_write_s7_parameter_user_data_item* _message) {
    plc4c_return_code _res = OK;
  
    // Discriminator Field (itemType)
    plc4c_spi_write_unsigned_byte(writeBuffer, 8, plc4c_s7_read_write_s7_parameter_user_data_item_get_discriminator(_message->_type).itemType);
  
    // Switch Field (Depending on the current type, serialize the subtype elements)
    switch(_message->_type) {
      case plc4c_s7_read_write_s7_parameter_user_data_item_type_plc4c_s7_read_write_s7_parameter_user_data_item_cpu_functions: {
  
    // Implicit Field (itemLength) (Used for parsing, but it's value is not stored as it's implicitly given by the objects content)
    _res = plc4c_spi_write_unsigned_byte(writeBuffer, 8, (plc4c_s7_read_write_s7_parameter_user_data_item_length_in_bytes(_message)) - (2));
    if(_res != OK) {
      return _res;
    }
  
    // Simple Field (method)
    _res = plc4c_spi_write_unsigned_byte(writeBuffer, 8, _message->s7_parameter_user_data_item_cpu_functions_method);
    if(_res != OK) {
      return _res;
    }
  
    // Simple Field (cpuFunctionType)
    _res = plc4c_spi_write_unsigned_byte(writeBuffer, 4, _message->s7_parameter_user_data_item_cpu_functions_cpu_function_type);
    if(_res != OK) {
      return _res;
    }
  
    // Simple Field (cpuFunctionGroup)
    _res = plc4c_spi_write_unsigned_byte(writeBuffer, 4, _message->s7_parameter_user_data_item_cpu_functions_cpu_function_group);
    if(_res != OK) {
      return _res;
    }
  
    // Simple Field (cpuSubfunction)
    _res = plc4c_spi_write_unsigned_byte(writeBuffer, 8, _message->s7_parameter_user_data_item_cpu_functions_cpu_subfunction);
    if(_res != OK) {
      return _res;
    }
  
    // Simple Field (sequenceNumber)
    _res = plc4c_spi_write_unsigned_byte(writeBuffer, 8, _message->s7_parameter_user_data_item_cpu_functions_sequence_number);
    if(_res != OK) {
      return _res;
    }
  
    // Optional Field (dataUnitReferenceNumber)
    if(_message->s7_parameter_user_data_item_cpu_functions_data_unit_reference_number != NULL) {
      _res = plc4c_spi_write_unsigned_byte(writeBuffer, 8, *_message->s7_parameter_user_data_item_cpu_functions_data_unit_reference_number);
      if(_res != OK) {
        return _res;
      }
    }
  
    // Optional Field (lastDataUnit)
    if(_message->s7_parameter_user_data_item_cpu_functions_last_data_unit != NULL) {
      _res = plc4c_spi_write_unsigned_byte(writeBuffer, 8, *_message->s7_parameter_user_data_item_cpu_functions_last_data_unit);
      if(_res != OK) {
        return _res;
      }
    }
  
    // Optional Field (errorCode)
    if(_message->s7_parameter_user_data_item_cpu_functions_error_code != NULL) {
      _res = plc4c_spi_write_unsigned_short(writeBuffer, 16, *_message->s7_parameter_user_data_item_cpu_functions_error_code);
      if(_res != OK) {
        return _res;
      }
    }
  
        break;
      }
    }
  
    return OK;
  }
  
  uint16_t plc4c_s7_read_write_s7_parameter_user_data_item_length_in_bytes(plc4c_s7_read_write_s7_parameter_user_data_item* _message) {
    return plc4c_s7_read_write_s7_parameter_user_data_item_length_in_bits(_message) / 8;
  }
  
  uint16_t plc4c_s7_read_write_s7_parameter_user_data_item_length_in_bits(plc4c_s7_read_write_s7_parameter_user_data_item* _message) {
    uint16_t lengthInBits = 0;
  
    // Discriminator Field (itemType)
    lengthInBits += 8;
  
    // Depending of the current type, add the length of sub-type elements ...
    switch(_message->_type) {
      case plc4c_s7_read_write_s7_parameter_user_data_item_type_plc4c_s7_read_write_s7_parameter_user_data_item_cpu_functions: {
  
    // Implicit Field (itemLength)
    lengthInBits += 8;
  
  
    // Simple field (method)
    lengthInBits += 8;
  
  
    // Simple field (cpuFunctionType)
    lengthInBits += 4;
  
  
    // Simple field (cpuFunctionGroup)
    lengthInBits += 4;
  
  
    // Simple field (cpuSubfunction)
    lengthInBits += 8;
  
  
    // Simple field (sequenceNumber)
    lengthInBits += 8;
  
  
    // Optional Field (dataUnitReferenceNumber)
    if(_message->s7_parameter_user_data_item_cpu_functions_data_unit_reference_number != NULL) {
      lengthInBits += 8;
    }
  
  
    // Optional Field (lastDataUnit)
    if(_message->s7_parameter_user_data_item_cpu_functions_last_data_unit != NULL) {
      lengthInBits += 8;
    }
  
  
    // Optional Field (errorCode)
    if(_message->s7_parameter_user_data_item_cpu_functions_error_code != NULL) {
      lengthInBits += 16;
    }
  
        break;
      }
    }
  
    return lengthInBits;
  }
  
  