#include "stmd.h"

extern int _scan_autolink_uri(const unsigned char *p);
extern int _scan_autolink_email(const unsigned char *p);
extern int _scan_html_tag(const unsigned char *p);
extern int _scan_html_block_tag(const unsigned char *p);
extern int _scan_link_url(const unsigned char *p);
extern int _scan_link_title(const unsigned char *p);
extern int _scan_spacechars(const unsigned char *p);
extern int _scan_atx_header_start(const unsigned char *p);
extern int _scan_setext_header_line(const unsigned char *p);
extern int _scan_hrule(const unsigned char *p);
extern int _scan_open_code_fence(const unsigned char *p);
extern int _scan_close_code_fence(const unsigned char *p);
extern int _scan_entity(const unsigned char *p);

static int scan_at(int (*scanner)(const unsigned char *), chunk *c, int offset)
{
	int res;
	unsigned char *ptr = (unsigned char *)c->data;
	unsigned char lim = ptr[c->len];

	ptr[c->len] = '\0';
	res = scanner(ptr + offset);
	ptr[c->len] = lim;

	return res;
}

#define scan_autolink_uri(c, n) scan_at(&_scan_autolink_uri, c, n)
#define scan_autolink_email(c, n) scan_at(&_scan_autolink_email, c, n)
#define scan_html_tag(c, n) scan_at(&_scan_html_tag, c, n)
#define scan_html_block_tag(c, n) scan_at(&_scan_html_block_tag, c, n)
#define scan_link_url(c, n) scan_at(&_scan_link_url, c, n)
#define scan_link_title(c, n) scan_at(&_scan_link_title, c, n)
#define scan_spacechars(c, n) scan_at(&_scan_spacechars, c, n)
#define scan_atx_header_start(c, n) scan_at(&_scan_atx_header_start, c, n)
#define scan_setext_header_line(c, n) scan_at(&_scan_setext_header_line, c, n)
#define scan_hrule(c, n) scan_at(&_scan_hrule, c, n)
#define scan_open_code_fence(c, n) scan_at(&_scan_open_code_fence, c, n)
#define scan_close_code_fence(c, n) scan_at(&_scan_close_code_fence, c, n)
#define scan_entity(c, n) scan_at(&_scan_entity, c, n)