so://phie

blob: 03e9c50c92e0f670bb01b3e9273710b68398613c (1410 bytes)[doc][blame][raw]

 1#ifndef _SO_CTL_H
 2#define _SO_CTL_H
 3
 4#include <stdio.h>
 5#include <stdlib.h>
 6
 7typedef int (*ctl_render_fn_t)(void *, void *, const char *);
 8
 9typedef struct {
10  ctl_render_fn_t fn;
11  void *data;
12  const char *dl_path;
13} ctl_templref_t;
14
15#define __TEMPLDEF_MACRO($name, $params) \
16  typedef struct { \
17    $params \
18  } $name##_t; \
19  \
20  typedef void (*$name##_fn_t)(void *, $name##_t *); \
21  \
22  int $name##_render(void *out, void *ctx, const char *dl_path) { \
23    void *handle = dlopen(dl_path, RTLD_NOW); \
24    if (!handle) { \
25      fprintf(stderr, "%s\n", dlerror()); \
26      return 1; \
27    } \
28    $name##_fn_t fn = ($name##_fn_t) dlsym(handle, "ctl_" #$name); \
29    char *err = dlerror(); \
30    if (err) { \
31      fprintf(stderr, "%s\n", err); \
32      dlclose(handle); \
33      return 1; \
34    } \
35    fn(out, ($name##_t *) ctx); \
36    dlclose(handle); \
37    return 0; \
38  }
39
40#define __TEMPLDEF_HEADER($name, $params) \
41  __TEMPLDEF_MACRO($name, $params) \
42  \
43  void ctl_##$name(void *out, $name##_t *ctx);
44
45#define TEMPLDEF($name, $params) \
46  __TEMPLDEF_MACRO($name, $params) \
47  \
48  void ctl_##$name(void *out, $name##_t *ctx) {
49
50#define ENDTEMPL }
51
52#define TEMPLBIND($name, $data, $dl_path) \
53  (ctl_templref_t) { \
54    .fn = $name##_render, \
55    .data = $data, \
56    .dl_path = $dl_path, \
57  },
58
59#define INCLUDE($name) ctx->$name.fn(ctl, ctx->$name.data, ctx->$name.dl_path);
60
61#endif // _SO_CTL_H