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extends.go
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/
extends.go
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// Copyright (c) 2015 Uber Technologies, Inc.
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package main
import (
"fmt"
"sort"
"strings"
)
// setExtends will set the ExtendsService for all services.
// It is done after all files are parsed, as services may extend those
// found in an included file.
func setExtends(state map[string]parseState) error {
for _, v := range state {
for _, s := range v.services {
if s.Extends == "" {
continue
}
var searchServices []*Service
var searchFor string
parts := strings.SplitN(s.Extends, ".", 2)
// If it's not imported, then look at the current file's services.
if len(parts) < 2 {
searchServices = v.services
searchFor = s.Extends
} else {
include := v.global.includes[parts[0]]
searchServices = state[include.file].services
searchFor = parts[1]
}
foundService := sort.Search(len(searchServices), func(i int) bool {
return searchServices[i].Name >= searchFor
})
if foundService == len(searchServices) {
return fmt.Errorf("failed to find base service %q for %q", s.Extends, s.Name)
}
s.ExtendsService = searchServices[foundService]
}
}
return nil
}