PostgreSQL Source Code  git master
api.c
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1 #include "header.h"
2 
3 extern struct SN_env * SN_create_env(int S_size, int I_size)
4 {
5  struct SN_env * z = (struct SN_env *) calloc(1, sizeof(struct SN_env));
6  if (z == NULL) return NULL;
7  z->p = create_s();
8  if (z->p == NULL) goto error;
9  if (S_size)
10  {
11  int i;
12  z->S = (symbol * *) calloc(S_size, sizeof(symbol *));
13  if (z->S == NULL) goto error;
14 
15  for (i = 0; i < S_size; i++)
16  {
17  z->S[i] = create_s();
18  if (z->S[i] == NULL) goto error;
19  }
20  }
21 
22  if (I_size)
23  {
24  z->I = (int *) calloc(I_size, sizeof(int));
25  if (z->I == NULL) goto error;
26  }
27 
28  return z;
29 error:
30  SN_close_env(z, S_size);
31  return NULL;
32 }
33 
34 extern void SN_close_env(struct SN_env * z, int S_size)
35 {
36  if (z == NULL) return;
37  if (S_size)
38  {
39  int i;
40  for (i = 0; i < S_size; i++)
41  {
42  lose_s(z->S[i]);
43  }
44  free(z->S);
45  }
46  free(z->I);
47  if (z->p) lose_s(z->p);
48  free(z);
49 }
50 
51 extern int SN_set_current(struct SN_env * z, int size, const symbol * s)
52 {
53  int err = replace_s(z, 0, z->l, size, s, NULL);
54  z->c = 0;
55  return err;
56 }
struct SN_env * SN_create_env(int S_size, int I_size)
Definition: api.c:3
int SN_set_current(struct SN_env *z, int size, const symbol *s)
Definition: api.c:51
void SN_close_env(struct SN_env *z, int S_size)
Definition: api.c:34
unsigned char symbol
Definition: api.h:2
void err(int eval, const char *fmt,...)
Definition: err.c:43
#define calloc(a, b)
Definition: header.h:55
#define free(a)
Definition: header.h:65
int i
Definition: isn.c:73
static pg_noinline void Size size
Definition: slab.c:607
static void error(void)
Definition: sql-dyntest.c:147
Definition: api.h:14
symbol * p
Definition: api.h:15
int * I
Definition: api.h:18
int c
Definition: api.h:16
int l
Definition: api.h:16
symbol ** S
Definition: api.h:17
int replace_s(struct SN_env *z, int c_bra, int c_ket, int s_size, const symbol *s, int *adjptr)
Definition: utilities.c:374
void lose_s(symbol *p)
Definition: utilities.c:15
symbol * create_s(void)
Definition: utilities.c:5