42 lines
864 B
Go
42 lines
864 B
Go
package json
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import (
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"strings"
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)
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type navigation struct {
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root *objectVal
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}
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// Implementation of zcled.ContextString
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func (n navigation) ContextString(offset int) string {
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steps := navigationStepsRev(n.root, offset)
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if steps == nil {
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return ""
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}
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// We built our slice backwards, so we'll reverse it in-place now.
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half := len(steps) / 2 // integer division
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for i := 0; i < half; i++ {
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steps[i], steps[len(steps)-1-i] = steps[len(steps)-1-i], steps[i]
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}
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return strings.Join(steps, ".")
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}
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func navigationStepsRev(obj *objectVal, offset int) []string {
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// Do any of our properties have an object that contains the target
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// offset?
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for k, attr := range obj.Attrs {
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ov, ok := attr.Value.(*objectVal)
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if !ok {
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continue
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}
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if ov.SrcRange.ContainsOffset(offset) {
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return append(navigationStepsRev(ov, offset), k)
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}
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}
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return nil
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}
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