static void code_params (LexState *ls, int nparams, int dots) {
FuncState *fs = ls->fs;
adjustlocalvars(ls, nparams);
luaX_checklimit(ls, fs->nactvar, MAXPARAMS, "parameters");
fs->f->numparams = cast(lu_byte, fs->nactvar);
fs->f->is_vararg = cast(lu_byte, dots);
if (dots)
create_local(ls, "arg");
luaK_reserveregs(fs, fs->nactvar); /* reserve register for parameters */
}
static int indexupvalue (FuncState *fs, TString *name, expdesc *v) {
int i;
Proto *f = fs->f;
for (i=0; i<f->nups; i++) {
if (fs->upvalues[i].k == v->k && fs->upvalues[i].info == v->info) {
lua_assert(fs->f->upvalues[i] == name);
return i;
}
}
/* new one */
luaX_checklimit(fs->ls, f->nups + 1, MAXUPVALUES, "upvalues");
luaM_growvector(fs->L, fs->f->upvalues, f->nups, fs->f->sizeupvalues,
TString *, MAX_INT, "");
fs->f->upvalues[f->nups] = name;
fs->upvalues[f->nups] = *v;
return f->nups++;
}
static void recfield (LexState *ls, struct ConsControl *cc) {
/* recfield -> (NAME | `['exp1`]') = exp1 */
FuncState *fs = ls->fs;
int reg = ls->fs->freereg;
expdesc key, val;
if (ls->t.token == TK_NAME) {
luaX_checklimit(ls, cc->nh, MAX_INT, "items in a constructor");
cc->nh++;
checkname(ls, &key);
}
else /* ls->t.token == '[' */
luaY_index(ls, &key);
check(ls, '=');
luaK_exp2RK(fs, &key);
expr(ls, &val);
luaK_codeABC(fs, OP_SETTABLE, cc->t->info, luaK_exp2RK(fs, &key),
luaK_exp2RK(fs, &val));
fs->freereg = reg; /* free registers */
}
static void listfield (LexState *ls, struct ConsControl *cc) {
expr(ls, &cc->v);
luaX_checklimit(ls, cc->na, MAXARG_Bx, "items in a constructor");
cc->na++;
cc->tostore++;
}
static void new_localvar (LexState *ls, TString *name, int n) {
FuncState *fs = ls->fs;
luaX_checklimit(ls, fs->nactvar+n+1, MAXVARS, "local variables");
fs->actvar[fs->nactvar+n] = luaI_registerlocalvar(ls, name);
}
static void inclinenumber (LexState *LS) {
next(LS); /* skip `\n' */
++LS->linenumber;
luaX_checklimit(LS, LS->linenumber, MAX_INT, "lines in a chunk");
}