Function newAutoGrowingCallFrameStack

state.go:250–257

newCallFrameStack allocates a new stack for a lua state, which will auto grow up to a max size of at least maxSize. it will actually grow up to the next segment size multiple after maxSize, where the segment size is dictated by FramesPerSegment.

(maxSize int)

// it will actually grow up to the next segment size multiple after maxSize, where the segment size is dictated by
// FramesPerSegment.
func newAutoGrowingCallFrameStack(maxSize int) callFrameStack {
	cs := &autoGrowingCallFrameStack{
		segments: make([]*callFrameStackSegment, (maxSize+(FramesPerSegment-1))/FramesPerSegment),
		segIdx:   0,
	}
	cs.segments[0] = newCallFrameStackSegment()
	return cs
}

func (cs *autoGrowingCallFrameStack) IsEmpty() bool {
	return cs.segIdx == 0 && cs.segSp == 0