github.com/grahambrereton-form3/tilt@v0.10.18/internal/store/private_fields.go (about)

     1  package store
     2  
     3  /*!
     4  MIT License
     5  
     6  Copyright (c) 2016 json-iterator
     7  
     8  Permission is hereby granted, free of charge, to any person obtaining a copy
     9  of this software and associated documentation files (the "Software"), to deal
    10  in the Software without restriction, including without limitation the rights
    11  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    12  copies of the Software, and to permit persons to whom the Software is
    13  furnished to do so, subject to the following conditions:
    14  
    15  The above copyright notice and this permission notice shall be included in all
    16  copies or substantial portions of the Software.
    17  
    18  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    19  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    20  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    21  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    22  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    23  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
    24  SOFTWARE.
    25  */
    26  
    27  // Copied from
    28  // https://github.com/json-iterator/go/blob/master/extra/privat_fields.go
    29  // and made possible to re-use in a particular api config
    30  
    31  import (
    32  	"strings"
    33  	"unicode"
    34  
    35  	jsoniter "github.com/json-iterator/go"
    36  )
    37  
    38  type privateFieldsExtension struct {
    39  	jsoniter.DummyExtension
    40  }
    41  
    42  func (extension *privateFieldsExtension) UpdateStructDescriptor(structDescriptor *jsoniter.StructDescriptor) {
    43  	for _, binding := range structDescriptor.Fields {
    44  		isPrivate := unicode.IsLower(rune(binding.Field.Name()[0]))
    45  		if isPrivate {
    46  			tag, hastag := binding.Field.Tag().Lookup("json")
    47  			if !hastag {
    48  				binding.FromNames = []string{binding.Field.Name()}
    49  				binding.ToNames = []string{binding.Field.Name()}
    50  				continue
    51  			}
    52  			tagParts := strings.Split(tag, ",")
    53  			names := calcFieldNames(binding.Field.Name(), tagParts[0], tag)
    54  			binding.FromNames = names
    55  			binding.ToNames = names
    56  		}
    57  	}
    58  }
    59  
    60  func calcFieldNames(originalFieldName string, tagProvidedFieldName string, wholeTag string) []string {
    61  	// ignore?
    62  	if wholeTag == "-" {
    63  		return []string{}
    64  	}
    65  	// rename?
    66  	var fieldNames []string
    67  	if tagProvidedFieldName == "" {
    68  		fieldNames = []string{originalFieldName}
    69  	} else {
    70  		fieldNames = []string{tagProvidedFieldName}
    71  	}
    72  	// private?
    73  	isNotExported := unicode.IsLower(rune(originalFieldName[0]))
    74  	if isNotExported {
    75  		fieldNames = []string{}
    76  	}
    77  	return fieldNames
    78  }