37 lines
1.1 KiB
C
37 lines
1.1 KiB
C
|
|
#include "misc.h"
|
|
#include "mpconfig.h"
|
|
#include "qstr.h"
|
|
#include "lexer.h"
|
|
|
|
typedef struct _mp_lexer_str_buf_t {
|
|
uint free_len; // if > 0, src_beg will be freed when done by: m_free(src_beg, free_len)
|
|
const char *src_beg; // beginning of source
|
|
const char *src_cur; // current location in source
|
|
const char *src_end; // end (exclusive) of source
|
|
} mp_lexer_str_buf_t;
|
|
|
|
STATIC unichar str_buf_next_char(mp_lexer_str_buf_t *sb) {
|
|
if (sb->src_cur < sb->src_end) {
|
|
return *sb->src_cur++;
|
|
} else {
|
|
return MP_LEXER_CHAR_EOF;
|
|
}
|
|
}
|
|
|
|
STATIC void str_buf_free(mp_lexer_str_buf_t *sb) {
|
|
if (sb->free_len > 0) {
|
|
m_free((char*)sb->src_beg, sb->free_len);
|
|
}
|
|
m_del_obj(mp_lexer_str_buf_t, sb);
|
|
}
|
|
|
|
mp_lexer_t *mp_lexer_new_from_str_len(qstr src_name, const char *str, uint len, uint free_len) {
|
|
mp_lexer_str_buf_t *sb = m_new_obj(mp_lexer_str_buf_t);
|
|
sb->free_len = free_len;
|
|
sb->src_beg = str;
|
|
sb->src_cur = str;
|
|
sb->src_end = str + len;
|
|
return mp_lexer_new(src_name, sb, (mp_lexer_stream_next_char_t)str_buf_next_char, (mp_lexer_stream_close_t)str_buf_free);
|
|
}
|