peridot/vendor/github.com/pelletier/go-toml/v2/internal/tracker/key.go
2024-10-16 12:56:53 +02:00

49 lines
1002 B
Go

package tracker
import "github.com/pelletier/go-toml/v2/unstable"
// KeyTracker is a tracker that keeps track of the current Key as the AST is
// walked.
type KeyTracker struct {
k []string
}
// UpdateTable sets the state of the tracker with the AST table node.
func (t *KeyTracker) UpdateTable(node *unstable.Node) {
t.reset()
t.Push(node)
}
// UpdateArrayTable sets the state of the tracker with the AST array table node.
func (t *KeyTracker) UpdateArrayTable(node *unstable.Node) {
t.reset()
t.Push(node)
}
// Push the given key on the stack.
func (t *KeyTracker) Push(node *unstable.Node) {
it := node.Key()
for it.Next() {
t.k = append(t.k, string(it.Node().Data))
}
}
// Pop key from stack.
func (t *KeyTracker) Pop(node *unstable.Node) {
it := node.Key()
for it.Next() {
t.k = t.k[:len(t.k)-1]
}
}
// Key returns the current key
func (t *KeyTracker) Key() []string {
k := make([]string, len(t.k))
copy(k, t.k)
return k
}
func (t *KeyTracker) reset() {
t.k = t.k[:0]
}