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validator
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code cleanup + variable renaming

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restructure fieldWithNameAndSingleTag for speed + less allocations
pull/59/head
joeybloggs 9 years ago
parent e4f2ff67bd
commit 0c5fbee316
1 changed files with 60 additions and 217 deletions
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  1. 277
      validator.go

277
validator.go
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@ -29,6 +29,31 @@ const (
structErrMsg = "Struct:%s\n"
)
type cachedTags struct {
keyVals [][]string
isOrVal bool
}
type cachedField struct {
index int
name string
tags []*cachedTags
tag string
kind reflect.Kind
typ reflect.Type
isTime bool
}
type cachedStruct struct {
children int
name string
kind reflect.Kind
fields []*cachedField
}
var structCache = map[reflect.Type]*cachedStruct{}
var fieldsCache = map[string][]*cachedTags{}
// FieldError contains a single field's validation error along
// with other properties that may be needed for error message creation
type FieldError struct {
@ -162,31 +187,6 @@ func (v *Validate) Struct(s interface{}) *StructErrors {
return v.structRecursive(s, s, s)
}
type cacheTags struct {
keyVals [][]string
isOrVal bool
}
type cachedField struct {
index int
name string
tags []*cacheTags
// tags [][]string
tag string
kind reflect.Kind
typ reflect.Type
isTime bool
}
type cachedStruct struct {
children int
name string
kind reflect.Kind
fields []*cachedField
}
var cache = map[reflect.Type]*cachedStruct{}
// structRecursive validates a struct recursivly and passes the top level and current struct around for use in validator functions and returns a struct containing the errors
func (v *Validate) structRecursive(top interface{}, current interface{}, s interface{}) *StructErrors {
@ -205,18 +205,16 @@ func (v *Validate) structRecursive(top interface{}, current interface{}, s inter
var structName string
var numFields int
// fmt.Println(structType)
cs, isCached := structCache[structType]
cs, ok := cache[structType]
if ok {
if isCached {
structName = cs.name
numFields = cs.children
} else {
structName = structType.Name()
numFields = structValue.NumField()
cs = &cachedStruct{name: structName, children: numFields}
cache[structType] = cs
structCache[structType] = cs
}
validationErrors := &StructErrors{
@ -229,26 +227,10 @@ func (v *Validate) structRecursive(top interface{}, current interface{}, s inter
var valueField reflect.Value
var cField *cachedField
// var fName string
// var tag string
var typeField reflect.StructField
// if ok {
// cField = cs.fields[i]
// valueField = structValue.Field(cField.index)
// } else {
// valueField = structValue.Field(i)
// }
// if valueField.Kind() == reflect.Ptr && !valueField.IsNil() {
// valueField = valueField.Elem()
// }
if ok {
if isCached {
cField = cs.fields[i]
// fName = cField.name
// tag = cField.tag
valueField = structValue.Field(cField.index)
if valueField.Kind() == reflect.Ptr && !valueField.IsNil() {
@ -265,8 +247,6 @@ func (v *Validate) structRecursive(top interface{}, current interface{}, s inter
cField = &cachedField{index: i, tag: typeField.Tag.Get(v.tagName)}
// tag = typeField.Tag.Get(v.tagName)
if cField.tag == noValidationTag {
cs.children--
continue
@ -278,12 +258,9 @@ func (v *Validate) structRecursive(top interface{}, current interface{}, s inter
continue
}
// fName = typeField.Name
cField.name = typeField.Name
cField.kind = valueField.Kind()
cField.typ = valueField.Type()
// cField = &cachedField{index: i, name: typeField.Name, tag: tag, kind: valueField.Kind()}
// cs.fields = append(cs.fields, cField)
}
// this can happen if the first cache value was nil
@ -298,7 +275,6 @@ func (v *Validate) structRecursive(top interface{}, current interface{}, s inter
if !unicode.IsUpper(rune(cField.name[0])) {
cs.children--
// cs.fields = cs.fields[:len(cs.fields)]
continue
}
@ -316,7 +292,6 @@ func (v *Validate) structRecursive(top interface{}, current interface{}, s inter
if strings.Contains(cField.tag, structOnlyTag) {
cs.children--
// cs.fields = cs.fields[:len(cs.fields)]
continue
}
@ -327,8 +302,6 @@ func (v *Validate) structRecursive(top interface{}, current interface{}, s inter
}
}
// cs.fields = append(cs.fields, cField)
default:
if fieldError := v.fieldWithNameAndValue(top, current, valueField.Interface(), cField.tag, cField.name, false, cField); fieldError != nil {
@ -336,11 +309,9 @@ func (v *Validate) structRecursive(top interface{}, current interface{}, s inter
// free up memory reference
fieldError = nil
}
// cs.fields = append(cs.fields, cField)
}
if !ok {
if !isCached {
cs.fields = append(cs.fields, cField)
}
}
@ -364,14 +335,10 @@ func (v *Validate) FieldWithValue(val interface{}, f interface{}, tag string) *F
return v.fieldWithNameAndValue(nil, val, f, tag, "", true, nil)
}
var cacheFields = map[string][]*cacheTags{}
func (v *Validate) fieldWithNameAndValue(val interface{}, current interface{}, f interface{}, tag string, name string, isSingleField bool, cacheField *cachedField) *FieldError {
// var fieldType reflect.Type
// var fieldKind reflect.Kind
var cField *cachedField
var ok bool
var isCached bool
// This is a double check if coming from validate.Struct but need to be here in case function is called directly
if tag == noValidationTag {
@ -386,57 +353,13 @@ func (v *Validate) fieldWithNameAndValue(val interface{}, current interface{}, f
valueField := reflect.ValueOf(f)
if valueField.Kind() == reflect.Ptr && !valueField.IsNil() {
// valueField = valueField.Elem()
// f = valueField.Interface()
return v.fieldWithNameAndValue(val, current, valueField.Elem().Interface(), tag, name, isSingleField, cacheField)
valueField = valueField.Elem()
f = valueField.Interface()
}
// if !ok {
// cacheFields[cField.tag] = cField
// valueField = valueField.Elem()
cField = &cachedField{name: name, kind: valueField.Kind(), tag: tag, typ: valueField.Type()}
// fieldKind = valueField.Kind()
// if cField.kind == reflect.Ptr && !valueField.IsNil() {
// return v.fieldWithNameAndValue(val, current, valueField.Elem().Interface(), tag, name, isSingleField, cacheField)
// }
// cField.typ = valueField.Type()
// cField.tag = tag
// if isSingleField {
// cacheFields[cField.tag] = cField
// }
// cField.tags = make([][]string, 0)
// fieldType = valueField.Type()
// for _, t := range strings.Split(tag, tagSeparator) {
// vals := strings.Split(t, tagKeySeparator)
// key := strings.TrimSpace(vals[0])
// if len(key) == 0 {
// panic(fmt.Sprintf("Invalid validation tag on field %s", name))
// }
// param := ""
// if len(vals) > 1 {
// param = strings.TrimSpace(vals[1])
// }
// // for vals := range strings.Split(t, tagKeySeparator) {
// cField.tags = append(cField.tags, []string{key, param})
// // }
// // vals := strings.Split(valTag, tagKeySeparator)
// // key := strings.TrimSpace(vals[0])
// }
// }
} else {
cField = cacheField
// fieldType = cacheField.typ
// fieldKind = cacheField.kind
}
switch cField.kind {
@ -451,16 +374,15 @@ func (v *Validate) fieldWithNameAndValue(val interface{}, current interface{}, f
if len(cField.tags) == 0 {
if isSingleField {
cField.tags, ok = cacheFields[tag]
cField.tags, isCached = fieldsCache[tag]
}
if !ok {
if !isCached {
for _, t := range strings.Split(tag, tagSeparator) {
orVals := strings.Split(t, orSeparator)
// fmt.Println(len(orVals) - 1)
cTag := &cacheTags{isOrVal: len(orVals) > 1, keyVals: make([][]string, len(orVals))}
cTag := &cachedTags{isOrVal: len(orVals) > 1, keyVals: make([][]string, len(orVals))}
cField.tags = append(cField.tags, cTag)
for i, val := range orVals {
@ -477,41 +399,18 @@ func (v *Validate) fieldWithNameAndValue(val interface{}, current interface{}, f
param = strings.TrimSpace(vals[1])
}
// fmt.Println(cTag.keyVals)
cTag.keyVals[i] = []string{key, param}
// cTag.keyVals = append(cTag.keyVals, []string{key, param})
// for vals := range strings.Split(t, tagKeySeparator) {
// cField.tags = append(cField.tags, cacheTags{ isOrVal: len(orVals) > 1, []string{key, param})
}
// }
// vals := strings.Split(valTag, tagKeySeparator)
// key := strings.TrimSpace(vals[0])
}
if isSingleField && !ok {
// fmt.Println(cField.tag)
cacheFields[cField.tag] = cField.tags
if isSingleField {
fieldsCache[cField.tag] = cField.tags
}
}
}
// fmt.Println(fieldKind, cacheField.kind)
// switch cField.kind {
// case reflect.Struct, reflect.Interface, reflect.Invalid:
// if cField.typ != reflect.TypeOf(time.Time{}) {
// panic("Invalid field passed to ValidateFieldWithTag")
// }
// }
var valErr *FieldError
var fieldErr *FieldError
var err error
// valTags := strings.Split(tag, tagSeparator)
for _, cTag := range cField.tags {
@ -521,96 +420,41 @@ func (v *Validate) fieldWithNameAndValue(val interface{}, current interface{}, f
for _, val := range cTag.keyVals {
// fmt.Println(cTag)
valErr, err = v.fieldWithNameAndSingleTag(val, current, f, val[0], val[1], name, cacheField)
fieldErr, err = v.fieldWithNameAndSingleTag(val, current, f, val[0], val[1], name)
if err == nil {
return nil
}
errTag += orSeparator + valErr.Tag
errTag += orSeparator + fieldErr.Tag
}
errTag = strings.TrimLeft(errTag, orSeparator)
valErr.Tag = errTag
valErr.Kind = cField.kind
return valErr
fieldErr.Tag = errTag
fieldErr.Kind = cField.kind
fieldErr.Type = cField.typ
return fieldErr
}
// else {
// fmt.Println(cTag.keyVals[0])
if fieldErr, err = v.fieldWithNameAndSingleTag(val, current, f, cTag.keyVals[0][0], cTag.keyVals[0][1], name); err != nil {
if valErr, err = v.fieldWithNameAndSingleTag(val, current, f, cTag.keyVals[0][0], cTag.keyVals[0][1], name, cacheField); err != nil {
fieldErr.Kind = cField.kind
fieldErr.Type = cField.typ
valErr.Kind = cField.kind
valErr.Type = cField.typ
return valErr
return fieldErr
}
// }
// orVals := strings.Split(valTag, orSeparator)
// if len(orVals) > 1 {
// errTag := ""
// for _, val := range orVals {
// valErr, err = v.fieldWithNameAndSingleTag(val, current, f, val, name, cacheField)
// if err == nil {
// return nil
// }
// errTag += orSeparator + valErr.Tag
// }
// errTag = strings.TrimLeft(errTag, orSeparator)
// valErr.Tag = errTag
// valErr.Kind = cField.kind
// return valErr
// }
// if valErr, err = v.fieldWithNameAndSingleTag(val, current, f, valTag, name, cacheField); err != nil {
// valErr.Kind = cField.kind
// valErr.Type = cField.typ
// return valErr
// }
}
return nil
}
func (v *Validate) fieldWithNameAndSingleTag(val interface{}, current interface{}, f interface{}, key string, param string, name string, cacheField *cachedField) (*FieldError, error) {
// vals := strings.Split(valTag, tagKeySeparator)
// key := strings.TrimSpace(vals[0])
// if len(key) == 0 {
// panic(fmt.Sprintf("Invalid validation tag on field %s", name))
// }
valErr := &FieldError{
Field: name,
Tag: key,
Value: f,
Param: "",
}
func (v *Validate) fieldWithNameAndSingleTag(val interface{}, current interface{}, f interface{}, key string, param string, name string) (*FieldError, error) {
// OK to continue because we checked it's existance before getting into this loop
if key == omitempty {
return valErr, nil
return nil, nil
}
valFunc, ok := v.validationFuncs[key]
@ -618,15 +462,14 @@ func (v *Validate) fieldWithNameAndSingleTag(val interface{}, current interface{
panic(fmt.Sprintf("Undefined validation function on field %s", name))
}
// param := ""
// if len(vals) > 1 {
// param = strings.TrimSpace(vals[1])
// }
if err := valFunc(val, current, f, param); !err {
valErr.Param = param
return valErr, errors.New(key)
if err := valFunc(val, current, f, param); err {
return nil, nil
} else {
return &FieldError{
Field: name,
Tag: key,
Value: f,
Param: param,
}, errors.New(key)
}
return valErr, nil
}

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