Function luaG_getfuncline

extlibs/lua/src/ldebug.c:89–101

** Get the line corresponding to instruction 'pc' in function 'f'; ** first gets a base line and from there does the increments until ** the desired instruction. */

** the desired instruction.
*/
int luaG_getfuncline (const Proto *f, int pc) {
  if (f->lineinfo == NULL)  /* no debug information? */
    return -1;
  else {
    int basepc;
    int baseline = getbaseline(f, pc, &basepc);
    while (basepc++ < pc) {  /* walk until given instruction */
      lua_assert(f->lineinfo[basepc] != ABSLINEINFO);
      baseline += f->lineinfo[basepc];  /* correct line */
    }
    return baseline;
  }
}


static int getcurrentline (CallInfo *ci) {