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45 lines
1.1 KiB
Go
45 lines
1.1 KiB
Go
package eval
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import "strings"
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// SplitSigil splits any leading sigil from a qualified variable name.
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func SplitSigil(ref string) (sigil string, qname string) {
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if ref == "" {
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return "", ""
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}
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switch ref[0] {
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case '@':
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// TODO(xiaq): Support % later.
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return ref[:1], ref[1:]
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default:
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return "", ref
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}
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}
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// SplitQName splits a qualified name into the first namespace segment and the
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// rest.
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func SplitQName(qname string) (first, rest string) {
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colon := strings.IndexByte(qname, ':')
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if colon == -1 {
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return qname, ""
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}
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return qname[:colon+1], qname[colon+1:]
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}
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// SplitQNameSegs splits a qualified name into namespace segments.
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func SplitQNameSegs(qname string) []string {
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segs := strings.SplitAfter(qname, ":")
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if len(segs) > 0 && segs[len(segs)-1] == "" {
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segs = segs[:len(segs)-1]
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}
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return segs
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}
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// SplitIncompleteQNameNs splits an incomplete qualified variable name into the
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// namespace part and the name part.
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func SplitIncompleteQNameNs(qname string) (ns, name string) {
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colon := strings.LastIndexByte(qname, ':')
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// If colon is -1, colon+1 will be 0, rendering an empty ns.
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return qname[:colon+1], qname[colon+1:]
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}
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