github.com/cloudwego/kitex@v0.9.0/tool/internal_pkg/generator/feature.go (about)

     1  // Copyright 2021 CloudWeGo Authors
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //   http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package generator
    16  
    17  type feature int
    18  
    19  const (
    20  	placeHolder feature = iota
    21  )
    22  
    23  var (
    24  	featureMap = make(map[string]feature)
    25  	maxFeature = placeHolder
    26  )
    27  
    28  // HasFeature check whether a feature in the list
    29  func HasFeature(list []feature, key string) bool {
    30  	target, ok := getFeature(key)
    31  	if !ok {
    32  		return false
    33  	}
    34  	for _, f := range list {
    35  		if f == target {
    36  			return true
    37  		}
    38  	}
    39  	return false
    40  }
    41  
    42  // RegisterFeature register a feature
    43  func RegisterFeature(key string) {
    44  	if _, ok := featureMap[key]; !ok {
    45  		maxFeature++
    46  		featureMap[key] = maxFeature
    47  	}
    48  }
    49  
    50  func getFeature(key string) (feature, bool) {
    51  	f, ok := featureMap[key]
    52  	return f, ok
    53  }