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package pat
import (
"context"
"sort"
"goji.io/internal"
"goji.io/pattern"
)
type match struct {
context.Context
pat *Pattern
matches []string
}
func (m match) Value(key interface{}) interface{} {
switch key {
case pattern.AllVariables:
var vs map[pattern.Variable]interface{}
if vsi := m.Context.Value(key); vsi == nil {
if len(m.pat.pats) == 0 {
return nil
}
vs = make(map[pattern.Variable]interface{}, len(m.matches))
} else {
vs = vsi.(map[pattern.Variable]interface{})
}
for _, p := range m.pat.pats {
vs[p.name] = m.matches[p.idx]
}
return vs
case internal.Path:
if len(m.matches) == len(m.pat.pats)+1 {
return m.matches[len(m.matches)-1]
}
return ""
}
if k, ok := key.(pattern.Variable); ok {
i := sort.Search(len(m.pat.pats), func(i int) bool {
return m.pat.pats[i].name >= k
})
if i < len(m.pat.pats) && m.pat.pats[i].name == k {
return m.matches[m.pat.pats[i].idx]
}
}
return m.Context.Value(key)
}