42 lines
745 B
Go
42 lines
745 B
Go
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package zclsyntax
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import (
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"bytes"
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"fmt"
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)
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type navigation struct {
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root *Body
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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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// We will walk our top-level blocks until we find one that contains
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// the given offset, and then construct a representation of the header
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// of the block.
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var block *Block
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for _, candidate := range n.root.Blocks {
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if candidate.Range().ContainsOffset(offset) {
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block = candidate
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break
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}
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}
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if block == nil {
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return ""
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}
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if len(block.Labels) == 0 {
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// Easy case!
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return block.Type
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}
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buf := &bytes.Buffer{}
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buf.WriteString(block.Type)
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for _, label := range block.Labels {
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fmt.Fprintf(buf, " %q", label)
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}
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return buf.String()
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}
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