Method CheckStack

lua.go:615–625

CheckStack ensures that there are at least size free stack slots in the stack. This call will not panic(), unlike the other Check*() functions. http://www.lua.org/manual/5.2/manual.html#lua_checkstack

(size int)

//
// http://www.lua.org/manual/5.2/manual.html#lua_checkstack
func (l *State) CheckStack(size int) bool {
	callInfo := l.callInfo
	ok := l.stackLast-l.top > size
	if !ok && l.top+extraStack <= maxStack-size {
		ok = l.protect(func() { l.growStack(size) }) == nil
	}
	if ok && callInfo.top < l.top+size {
		callInfo.setTop(l.top + size)
	}
	return ok
}

// AtPanic sets a new panic function and returns the old one.
func AtPanic(l *State, panicFunction Function) Function {