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