vigour-io / brisky-struct / 269

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66.67
/lib/traversal.js
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// will combined lookup
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const parent = t => {
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  if (t.context) {
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    if (t.contextLevel === 1) {
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      return t.context
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    } else {
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      t._p.contextLevel = t.contextLevel - 1
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      t._p.context = t.context
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      return t._p
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    }
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  } else {
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    return t._p
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  }
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}
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const root = t => {




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  var p = t




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  while (p) {




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    t = p




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    p = parent(p)




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  }










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  return t




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}










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const path = t => {




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  const result = []




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  var parent = t




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  while (parent) {




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    if (parent.context) {




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      let i = parent.contextLevel




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      let p = parent




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      while (i--) {




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        result.unshift(p.key)




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        p = p._p




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      }










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      parent = parent.context




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    } else if (parent.key) {




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      result.unshift(parent.key)




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      parent = parent._p




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    } else {










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      break




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    }










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  }










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  return result




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}










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exports.path = path




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exports.parent = parent




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exports.root = root




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