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83 lines
1.3 KiB
83 lines
1.3 KiB
package web
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import "net/http"
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type routeMachine struct {
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sm stateMachine
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routes []route
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}
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func matchRoute(route route, m method, ms *method, r *http.Request, c *C) bool {
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if !route.pattern.Match(r, c) {
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return false
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}
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*ms |= route.method
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if route.method&m != 0 {
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route.pattern.Run(r, c)
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return true
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}
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return false
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}
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func (rm routeMachine) route(c *C, w http.ResponseWriter, r *http.Request) (method, *route) {
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m := httpMethod(r.Method)
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var methods method
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p := r.URL.Path
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if len(rm.sm) == 0 {
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return methods, nil
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}
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var i int
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for {
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sm := rm.sm[i].mode
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if sm&smSetCursor != 0 {
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si := rm.sm[i].i
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p = r.URL.Path[si:]
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i++
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continue
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}
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length := int(sm & smLengthMask)
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match := false
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if length <= len(p) {
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bs := rm.sm[i].bs
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switch length {
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case 3:
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if p[2] != bs[2] {
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break
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}
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fallthrough
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case 2:
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if p[1] != bs[1] {
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break
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}
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fallthrough
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case 1:
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if p[0] != bs[0] {
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break
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}
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fallthrough
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case 0:
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p = p[length:]
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match = true
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}
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}
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if match && sm&smRoute != 0 {
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si := rm.sm[i].i
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if matchRoute(rm.routes[si], m, &methods, r, c) {
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return 0, &rm.routes[si]
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}
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i++
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} else if match != (sm&smJumpOnMatch == 0) {
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if sm&smFail != 0 {
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return methods, nil
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}
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i = int(rm.sm[i].i)
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} else {
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i++
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}
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}
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}
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