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// Copyright 2022 PerimeterX. All rights reserved.
// Use of this source code is governed by a MIT style
// license that can be found in the LICENSE file.
package marshmallow
import (
"encoding/json"
"reflect"
"strings"
)
var unmarshalerType = reflect.TypeOf((*json.Unmarshaler)(nil)).Elem()
type reflectionInfo struct {
path []int
t reflect.Type
}
func (r reflectionInfo) field(target reflect.Value) reflect.Value {
current := target
for _, i := range r.path {
current = current.Field(i)
}
return current
}
func mapStructFields(target interface{}) map[string]reflectionInfo {
t := reflectStructType(target)
result := cacheLookup(t)
if result != nil {
return result
}
result = make(map[string]reflectionInfo, t.NumField())
mapTypeFields(t, result, nil)
cacheStore(t, result)
return result
}
func mapTypeFields(t reflect.Type, result map[string]reflectionInfo, path []int) {
num := t.NumField()
for i := 0; i < num; i++ {
field := t.Field(i)
fieldPath := append(path, i)
if field.Anonymous && field.Type.Kind() == reflect.Struct {
mapTypeFields(field.Type, result, fieldPath)
continue
}
name := field.Tag.Get("json")
if name == "" || name == "-" {
continue
}
if index := strings.Index(name, ","); index > -1 {
name = name[:index]
}
result[name] = reflectionInfo{
path: fieldPath,
t: field.Type,
}
}
}
func reflectStructValue(target interface{}) reflect.Value {
v := reflect.ValueOf(target)
for v.Kind() == reflect.Ptr {
v = v.Elem()
}
return v
}
func reflectStructType(target interface{}) reflect.Type {
t := reflect.TypeOf(target)
for t.Kind() == reflect.Ptr {
t = t.Elem()
}
return t
}
var primitiveConverters = map[reflect.Kind]func(v interface{}) (interface{}, bool){
reflect.Bool: func(v interface{}) (interface{}, bool) {
res, ok := v.(bool)
return res, ok
},
reflect.Int: func(v interface{}) (interface{}, bool) {
res, ok := v.(float64)
if ok {
return int(res), true
}
return v, false
},
reflect.Int8: func(v interface{}) (interface{}, bool) {
res, ok := v.(float64)
if ok {
return int8(res), true
}
return v, false
},
reflect.Int16: func(v interface{}) (interface{}, bool) {
res, ok := v.(float64)
if ok {
return int16(res), true
}
return v, false
},
reflect.Int32: func(v interface{}) (interface{}, bool) {
res, ok := v.(float64)
if ok {
return int32(res), true
}
return v, false
},
reflect.Int64: func(v interface{}) (interface{}, bool) {
res, ok := v.(float64)
if ok {
return int64(res), true
}
return v, false
},
reflect.Uint: func(v interface{}) (interface{}, bool) {
res, ok := v.(float64)
if ok {
return uint(res), true
}
return v, false
},
reflect.Uint8: func(v interface{}) (interface{}, bool) {
res, ok := v.(float64)
if ok {
return uint8(res), true
}
return v, false
},
reflect.Uint16: func(v interface{}) (interface{}, bool) {
res, ok := v.(float64)
if ok {
return uint16(res), true
}
return v, false
},
reflect.Uint32: func(v interface{}) (interface{}, bool) {
res, ok := v.(float64)
if ok {
return uint32(res), true
}
return v, false
},
reflect.Uint64: func(v interface{}) (interface{}, bool) {
res, ok := v.(float64)
if ok {
return uint64(res), true
}
return v, false
},
reflect.Float32: func(v interface{}) (interface{}, bool) {
res, ok := v.(float64)
if ok {
return float32(res), true
}
return v, false
},
reflect.Float64: func(v interface{}) (interface{}, bool) {
res, ok := v.(float64)
if ok {
return res, true
}
return v, false
},
reflect.Interface: func(v interface{}) (interface{}, bool) {
return v, true
},
reflect.String: func(v interface{}) (interface{}, bool) {
res, ok := v.(string)
return res, ok
},
}
func assignValue(field reflect.Value, value interface{}) {
if value == nil {
return
}
reflectValue := reflect.ValueOf(value)
if reflectValue.Type().AssignableTo(field.Type()) {
field.Set(reflectValue)
}
}
func isValidValue(v interface{}) bool {
value := reflect.ValueOf(v)
return value.Kind() == reflect.Ptr && value.Elem().Kind() == reflect.Struct && !value.IsNil()
}
func safeReflectValue(t reflect.Type, v interface{}) reflect.Value {
if v == nil {
return reflect.Zero(t)
}
return reflect.ValueOf(v)
}
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