What means a snippet ((ADC_typedef *) ADC1_BASE) in header file?

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microcontroller

ARM

i read the header file stm micro Arm,in header file :
micro is stm32f407 and environment is keil
whats means this state means in macro definition?

#define ADC1                ((ADC_TypeDef *) ADC1_BASE)
#define ADC2                ((ADC_TypeDef *) ADC2_BASE)

definition ADC_TypeDef

typedef struct
{
  __IO uint32_t SR;     /*!< ADC status register,                         Address offset: 0x00 */
  __IO uint32_t CR1;    /*!< ADC control register 1,                      Address offset: 0x04 */      
  __IO uint32_t CR2;    /*!< ADC control register 2,                      Address offset: 0x08 */
  __IO uint32_t SMPR1;  /*!< ADC sample time register 1,                  Address offset: 0x0C */
  __IO uint32_t SMPR2;  /*!< ADC sample time register 2,                  Address offset: 0x10 */
  __IO uint32_t JOFR1;  /*!< ADC injected channel data offset register 1, Address offset: 0x14 */
  __IO uint32_t JOFR2;  /*!< ADC injected channel data offset register 2, Address offset: 0x18 */
  __IO uint32_t JOFR3;  /*!< ADC injected channel data offset register 3, Address offset: 0x1C */
  __IO uint32_t JOFR4;  /*!< ADC injected channel data offset register 4, Address offset: 0x20 */
  __IO uint32_t HTR;    /*!< ADC watchdog higher threshold register,      Address offset: 0x24 */
  __IO uint32_t LTR;    /*!< ADC watchdog lower threshold register,       Address offset: 0x28 */
  __IO uint32_t SQR1;   /*!< ADC regular sequence register 1,             Address offset: 0x2C */
  __IO uint32_t SQR2;   /*!< ADC regular sequence register 2,             Address offset: 0x30 */
  __IO uint32_t SQR3;   /*!< ADC regular sequence register 3,             Address offset: 0x34 */
  __IO uint32_t JSQR;   /*!< ADC injected sequence register,              Address offset: 0x38*/
  __IO uint32_t JDR1;   /*!< ADC injected data register 1,                Address offset: 0x3C */
  __IO uint32_t JDR2;   /*!< ADC injected data register 2,                Address offset: 0x40 */
  __IO uint32_t JDR3;   /*!< ADC injected data register 3,                Address offset: 0x44 */
  __IO uint32_t JDR4;   /*!< ADC injected data register 4,                Address offset: 0x48 */
  __IO uint32_t DR;     /*!< ADC regular data register,                   Address offset: 0x4C */
} ADC_TypeDef;

definition ADC1_BASE :

#define ADC1_BASE             (APB2PERIPH_BASE + 0x2000)
#define ADC2_BASE             (APB2PERIPH_BASE + 0x2100)
#define ADC3_BASE             (APB2PERIPH_BASE + 0x2200)

can any guide me?
whats means this state means in macro definition?
thanks for reply

What I have tried:

i searched but i couldn't find my answer.