gobuffalo/velvet

package velvet

type blockParams struct {
    current []string
    stack   [][]string
}

func newBlockParams() *blockParams {
    return &blockParams{
        current: []string{},
        stack:   [][]string{},
    }
}

func (bp *blockParams) push(params []string) {
    bp.current = params
    bp.stack = append(bp.stack, params)
}

func (bp *blockParams) pop() []string {
    l := len(bp.stack)
    if l == 0 {
        return bp.current
    }
    p := bp.stack[l-1]
    bp.stack = bp.stack[0:(l - 1)]
    l = len(bp.stack)
    if l == 0 {
        bp.current = []string{}
    } else {
        bp.current = bp.stack[l-1]
    }
    return p
}