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goja_fieldmapping.go
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/
goja_fieldmapping.go
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package gojsx
import (
"github.com/dop251/goja"
"github.com/dop251/goja/parser"
"reflect"
"strings"
)
type tagFieldNameMapper struct {
tagName string
uncapMethods bool
fallbackToUncap bool // If the tag is not found, use lowercase initials.
}
func (tfm tagFieldNameMapper) FieldName(_ reflect.Type, f reflect.StructField) string {
tag := f.Tag.Get(tfm.tagName)
if idx := strings.IndexByte(tag, ','); idx != -1 {
tag = tag[:idx]
}
if parser.IsIdentifier(tag) {
return tag
}
if tfm.fallbackToUncap {
return uncapitalize(f.Name)
}
return ""
}
func uncapitalize(s string) string {
return strings.ToLower(s[0:1]) + s[1:]
}
func (tfm tagFieldNameMapper) MethodName(_ reflect.Type, m reflect.Method) string {
if tfm.uncapMethods {
return uncapitalize(m.Name)
}
return m.Name
}
func TagFieldNameMapper(tagName string, uncapMethods bool, fallbackToUncap bool) goja.FieldNameMapper {
return tagFieldNameMapper{tagName, uncapMethods, fallbackToUncap}
}