#ifndef SYSTEM_H_

#define SYSTEM_H_

#include <time.h>

#include "Types.h"

#include "misc.h"

extern double pi;

typedef TDate* PDate;

// dimension info for dynamic arrays

typedef struct {

    int dim;

    int a[4]; // at most 4

} fpcrtl_dimension_t;

/*

 * Copy returns a string which is a copy if the Count characters in S, starting at position Index.

 * If Count is larger than the length of the string S, the result is truncated.

 * If Index is larger than the length of the string S, then an empty string is returned.

 * Index is 1-based.

 */

string255   fpcrtl_copy(string255 s, Integer Index, Integer Count);

/*

 * Delete removes Count characters from string S, starting at position Index.

 * All characters after the deleted characters are shifted Count positions to the left,

 * and the length of the string is adjusted.

 */

#define     fpcrtl_delete(s, index, count)                  fpcrtl_delete__vars(&(s), index, count)

void        fpcrtl_delete__vars(string255 *s, SizeInt index, SizeInt count);

string255   fpcrtl_floatToStr(double n);

/*

 * Move data from one location in memory to another

 */

void        fpcrtl_move__vars(void *src, void *dst, SizeInt count);

#define     fpcrtl_move(src, dst, count)                    fpcrtl_move__vars(&(src), &(dst), count);

#define     fpcrtl_Move                                     fpcrtl_move

Integer     __attribute__((overloadable))                   fpcrtl_pos(Char c, string255 str);

Integer     __attribute__((overloadable))                   fpcrtl_pos(string255 substr, string255 str);

Integer     fpcrtl_length(string255 s);

#define     fpcrtl_Length                                   fpcrtl_length

#define     fpcrtl_sqr(x)                                   ((x) * (x))

#define     fpcrtl_odd(x)                                   ((x) % 2 != 0 ? true : false)

#define     fpcrtl_StrLen                                   strlen

#define     SizeOf                                          sizeof

string255   fpcrtl_lowerCase(string255 s);

#define     fpcrtl_LowerCase                                fpcrtl_lowerCase

void        fpcrtl_fillChar__vars(void *x, SizeInt count, Byte value);

#define     fpcrtl_fillChar(x, count, value)                fpcrtl_fillChar__vars(&(x), count, value)

#define     fpcrtl_FillChar                                 fpcrtl_fillChar

void        fpcrtl_new__vars(void **p, int size);

#define     fpcrtl_new(a)                                   fpcrtl_new__vars((void **)&(a), sizeof(*(a)))

#define     fpcrtl_dispose                                  free

#define     fpcrtl_freeMem(p, size)                         free(p)

#define     fpcrtl_FreeMem(p, size)                         free(p)

#define     fpcrtl_getMem(size)                             malloc(size)

#define     fpcrtl_GetMem                                   fpcrtl_getMem

#define     fpcrtl_assigned(p)                              ((p) != NULL)

#define     fpcrtl_Assigned                                 fpcrtl_assigned

Integer     fpcrtl_trunc(extended n);

#define     fpcrtl_val(s, a, c)                             fpcrtl_val__vars(s, &(a), &(c))

void        __attribute__((overloadable))                   fpcrtl_val__vars(string255 s, LongInt *a, LongInt *c);

void        __attribute__((overloadable))                   fpcrtl_val__vars(string255 s, Byte *a, LongInt *c);

void        __attribute__((overloadable))                   fpcrtl_val__vars(string255 s, LongWord *a, LongInt *c);

#define     fpcrtl_randomize()                              srand(time(NULL))

/*

 * Random returns a random number larger or equal to 0 and strictly less than L

 */

LongInt     fpcrtl_random(LongInt l);

string255   fpcrtl_paramStr(LongInt);

#define     fpcrtl_ParamStr                                 fpcrtl_paramStr

/*

 * Str returns a string which represents the value of X. X can be any numerical type.

 */

#define     fpcrtl_str(x, s)                                fpcrtl_str__vars(x, &(s))

void        __attribute__((overloadable))                   fpcrtl_str__vars(float x, string255 *s);

void        __attribute__((overloadable))                   fpcrtl_str__vars(double x, string255 *s);

void        __attribute__((overloadable))                   fpcrtl_str__vars(uint8_t x, string255 *s);

void        __attribute__((overloadable))                   fpcrtl_str__vars(int8_t x, string255 *s);

void        __attribute__((overloadable))                   fpcrtl_str__vars(uint16_t x, string255 *s);

void        __attribute__((overloadable))                   fpcrtl_str__vars(int16_t x, string255 *s);

void        __attribute__((overloadable))                   fpcrtl_str__vars(uint32_t x, string255 *s);

void        __attribute__((overloadable))                   fpcrtl_str__vars(int32_t x, string255 *s);

void        __attribute__((overloadable))                   fpcrtl_str__vars(uint64_t x, string255 *s);

void        __attribute__((overloadable))                   fpcrtl_str__vars(int64_t x, string255 *s);

void        fpcrtl_interlockedIncrement__vars(int *i);

void        fpcrtl_interlockedDecrement__vars(int *i);

#define     fpcrtl_interlockedIncrement(i)                  fpcrtl_interlockedIncrement__vars(&(i))

#define     fpcrtl_interlockedDecrement(i)                  fpcrtl_interlockedDecrement__vars(&(i))

#define     fpcrtl_InterlockedIncrement                     fpcrtl_interlockedIncrement

#define     fpcrtl_InterlockedDecrement                     fpcrtl_interlockedDecrement

void        fpcrtl_init(int argc, char** argv);

int         fpcrtl_paramCount();

#define     fpcrtl_ParamCount                               fpcrtl_paramCount

string255   fpcrtl_paramStr(int i);

#define     fpcrtl_ParamStr                                 fpcrtl_paramStr

int         fpcrtl_UTF8ToUnicode(PWideChar dest, PChar src, SizeInt maxLen);

#define     fpcrtl_halt(t)                                  assert(0)

#define     fpcrtl_Load_GL_VERSION_2_0()                    1

uint32_t    __attribute__((overloadable))                   fpcrtl_lo(uint64_t);

#define     fpcrtl_Lo                                       fpcrtl_lo

#define     __SET_LENGTH2(arr, d, b) do{\

                d.dim = 1;\

                arr = realloc(arr, b * sizeof(typeof(*arr)));\

                d.a[0] = b;\

            }while(0)

#define     SET_LENGTH2(arr, b)                             __SET_LENGTH2(arr, arr##_dimension_info, (b))

#define     __SET_LENGTH3(arr, d, b, c) do{\

                d.dim = 2;\

                for (int i = 0; i < d.a[0]; i++) {\

                    arr[i] = realloc(arr[i], c * sizeof(typeof(**arr)));\

                }\

                if (d.a[0] > b) {\

                    for (int i = b; i < d.a[0]; i++) {\

                        free(arr[i]);\

                    }\

                    arr = realloc(arr, b * sizeof(typeof(*arr)));\

                } else if (d.a[0] < b) {\

                    arr = realloc(arr, b * sizeof(typeof(*arr)));\

                    for (int i = d.a[0]; i < b; i++) {\

                        arr[i] = malloc(c * sizeof(typeof(**arr)));\

                        memset(arr[i], 0, c * sizeof(typeof(**arr)));\

                    }\

                }\

                d.a[0] = b;\

                d.a[1] = c;\

            }while(0)

#define     SET_LENGTH3(arr, b, c)                          __SET_LENGTH3(arr, arr##_dimension_info, (b), (c))

#define     fpcrtl_SetLength(...)                           macro_dispatcher(SET_LENGTH, __VA_ARGS__)(__VA_ARGS__)

#endif /* SYSTEM_H_ */