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// Copyright 2015 Google Inc. All rights reserved
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package kati
import "sync"
type symtabT struct {
mu sync.Mutex
m map[string]string
}
var symtab = &symtabT{
m: make(map[string]string),
}
func intern(s string) string {
symtab.mu.Lock()
v, ok := symtab.m[s]
if ok {
symtab.mu.Unlock()
return v
}
symtab.m[s] = s
symtab.mu.Unlock()
return s
}
func internBytes(s []byte) string {
return intern(string(s))
}
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