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Remove sentinel errors
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parent
debf1fce54
commit
5d7b38cabf
1 changed files with 5 additions and 7 deletions
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@ -9,15 +9,12 @@ import (
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"restic/debug"
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)
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// Tree is an ordered list of nodes.
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type Tree struct {
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Nodes []*Node `json:"nodes"`
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}
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var (
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ErrNodeNotFound = errors.New("named node not found")
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ErrNodeAlreadyInTree = errors.New("node already present")
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)
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// NewTree creates a new tree object.
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func NewTree() *Tree {
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return &Tree{
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Nodes: []*Node{},
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@ -61,10 +58,11 @@ func (t Tree) Equals(other *Tree) bool {
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return true
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}
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// Insert adds a new node at the correct place in the tree.
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func (t *Tree) Insert(node *Node) error {
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pos, _, err := t.binarySearch(node.Name)
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if err == nil {
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return ErrNodeAlreadyInTree
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return errors.New("node already present")
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}
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// https://code.google.com/p/go-wiki/wiki/SliceTricks
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@ -84,7 +82,7 @@ func (t Tree) binarySearch(name string) (int, *Node, error) {
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return pos, t.Nodes[pos], nil
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}
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return pos, nil, ErrNodeNotFound
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return pos, nil, errors.New("named node not found")
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}
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func (t Tree) Find(name string) (*Node, error) {
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