How to use Error method of validation Package

Best Gauge code snippet using validation.Error

parser.go

Source:parser.go

...18}19func (p *Parser) ParseWithClaims(tokenString string, claims Claims, keyFunc Keyfunc) (*Token, error) {20	parts := strings.Split(tokenString, ".")21	if len(parts) != 3 {22		return nil, NewValidationError("token contains an invalid number of segments", ValidationErrorMalformed)23	}24	var err error25	token := &Token{Raw: tokenString}26	// parse Header27	var headerBytes []byte28	if headerBytes, err = DecodeSegment(parts[0]); err != nil {29		if strings.HasPrefix(strings.ToLower(tokenString), "bearer ") {30			return token, NewValidationError("tokenstring should not contain 'bearer '", ValidationErrorMalformed)31		}32		return token, &ValidationError{Inner: err, Errors: ValidationErrorMalformed}33	}34	if err = json.Unmarshal(headerBytes, &token.Header); err != nil {35		return token, &ValidationError{Inner: err, Errors: ValidationErrorMalformed}36	}37	// parse Claims38	var claimBytes []byte39	token.Claims = claims40	if claimBytes, err = DecodeSegment(parts[1]); err != nil {41		return token, &ValidationError{Inner: err, Errors: ValidationErrorMalformed}42	}43	dec := json.NewDecoder(bytes.NewBuffer(claimBytes))44	if p.UseJSONNumber {45		dec.UseNumber()46	}47	// JSON Decode.  Special case for map type to avoid weird pointer behavior48	if c, ok := token.Claims.(MapClaims); ok {49		err = dec.Decode(&c)50	} else {51		err = dec.Decode(&claims)52	}53	// Handle decode error54	if err != nil {55		return token, &ValidationError{Inner: err, Errors: ValidationErrorMalformed}56	}57	// Lookup signature method58	if method, ok := token.Header["alg"].(string); ok {59		if token.Method = GetSigningMethod(method); token.Method == nil {60			return token, NewValidationError("signing method (alg) is unavailable.", ValidationErrorUnverifiable)61		}62	} else {63		return token, NewValidationError("signing method (alg) is unspecified.", ValidationErrorUnverifiable)64	}65	// Verify signing method is in the required set66	if p.ValidMethods != nil {67		var signingMethodValid = false68		var alg = token.Method.Alg()69		for _, m := range p.ValidMethods {70			if m == alg {71				signingMethodValid = true72				break73			}74		}75		if !signingMethodValid {76			// signing method is not in the listed set77			return token, NewValidationError(fmt.Sprintf("signing method %v is invalid", alg), ValidationErrorSignatureInvalid)78		}79	}80	// Lookup key81	var key interface{}82	if keyFunc == nil {83		// keyFunc was not provided.  short circuiting validation84		return token, NewValidationError("no Keyfunc was provided.", ValidationErrorUnverifiable)85	}86	if key, err = keyFunc(token); err != nil {87		// keyFunc returned an error88		return token, &ValidationError{Inner: err, Errors: ValidationErrorUnverifiable}89	}90	vErr := &ValidationError{}91	// Validate Claims92	if !p.SkipClaimsValidation {93		if err := token.Claims.Valid(); err != nil {94			// If the Claims Valid returned an error, check if it is a validation error,95			// If it was another error type, create a ValidationError with a generic ClaimsInvalid flag set96			if e, ok := err.(*ValidationError); !ok {97				vErr = &ValidationError{Inner: err, Errors: ValidationErrorClaimsInvalid}98			} else {99				vErr = e100			}101		}102	}103	// Perform validation104	token.Signature = parts[2]105	if err = token.Method.Verify(strings.Join(parts[0:2], "."), token.Signature, key); err != nil {106		vErr.Inner = err107		vErr.Errors |= ValidationErrorSignatureInvalid108	}109	if vErr.valid() {110		token.Valid = true111		return token, nil112	}113	return token, vErr114}...

errors.go

Source:errors.go

1package jwt2import (3	"errors"4)5// Error constants6var (7	ErrInvalidKey      = errors.New("key is invalid")8	ErrInvalidKeyType  = errors.New("key is of invalid type")9	ErrHashUnavailable = errors.New("the requested hash function is unavailable")10)11// The errors that might occur when parsing and validating a token12const (13	ValidationErrorMalformed        uint32 = 1 << iota // Token is malformed14	ValidationErrorUnverifiable                        // Token could not be verified because of signing problems15	ValidationErrorSignatureInvalid                    // Signature validation failed16	// Standard Claim validation errors17	ValidationErrorAudience      // AUD validation failed18	ValidationErrorExpired       // EXP validation failed19	ValidationErrorIssuedAt      // IAT validation failed20	ValidationErrorIssuer        // ISS validation failed21	ValidationErrorNotValidYet   // NBF validation failed22	ValidationErrorId            // JTI validation failed23	ValidationErrorClaimsInvalid // Generic claims validation error24)25// Helper for constructing a ValidationError with a string error message26func NewValidationError(errorText string, errorFlags uint32) *ValidationError {27	return &ValidationError{28		text:   errorText,29		Errors: errorFlags,30	}31}32// The error from Parse if token is not valid33type ValidationError struct {34	Inner  error  // stores the error returned by external dependencies, i.e.: KeyFunc35	Errors uint32 // bitfield.  see ValidationError... constants36	text   string // errors that do not have a valid error just have text37}38// Validation error is an error type39func (e ValidationError) Error() string {40	if e.Inner != nil {41		return e.Inner.Error()42	} else if e.text != "" {43		return e.text44	} else {45		return "token is invalid"46	}47}48// No errors49func (e *ValidationError) valid() bool {50	return e.Errors == 051}...

Error

Using AI Code Generation

1import (2type User struct {3}4func main() {5    user := User{Name: ""}6    validate := validator.New()7    err := validate.Struct(user)8    if err != nil {9        for _, err := range err.(validator.ValidationErrors) {10            fmt.Println(err.Field(), err.Tag())11        }12    }13}14import (15type User struct {16}17func main() {18    user := User{Name: ""}19    validate := validator.New()20    err := validate.Struct(user)21    if err != nil {22        for _, err := range err.(validator.ValidationErrors) {23            fmt.Println(err.Translate(validate))24        }25    }26}27import (28type User struct {29}30func main() {31    user := User{Name: ""}32    validate := validator.New()33    err := validate.Struct(user)34    if err != nil {35        for _, err := range err.(validator.ValidationErrors) {36            fmt.Println(err.Translate(validate))37        }38    }39}40import (41type User struct {42}43func main() {44    user := User{Name: ""}45    validate := validator.New()46    err := validate.Struct(user)47    if err != nil {48        for _, err := range err.(validator.ValidationErrors) {49            fmt.Println(err.Translate(validate))50        }51    }52}

Error

Using AI Code Generation

1err := validation.Error("some error")2err := validation.Error("some error")3err := validation.Error("some error")4err := validation.Error("some error")5err := validation.Error("some error")6err := validation.Error("some error")7err := validation.Error("some error")8err := validation.Error("some error")9err := validation.Error("some error")10err := validation.Error("some error")11err := validation.Error("some error")12err := validation.Error("some error")13err := validation.Error("some error")14err := validation.Error("some error")15err := validation.Error("some error")16err := validation.Error("some error")17err := validation.Error("some error")18err := validation.Error("some error")19err := validation.Error("some error")20err := validation.Error("some error")

Error

Using AI Code Generation

1type ValidationError struct {2    Value interface{}3}4func (err *ValidationError) Error() string {5    return fmt.Sprintf("Validation error: %s: %v: %s", err.Field, err.Value, err.Reason)6}7import "validation"8func main() {9    err := &validation.ValidationError{"age", "22", "is not a valid age"}10    fmt.Println(err.Error())11}12import "validation"13func main() {14    err := &validation.ValidationError{"age", "22", "is not a valid age"}15    fmt.Println(err.Error())16}17import "validation"18func main() {19    err := &validation.ValidationError{"age", "22", "is not a valid age"}20    fmt.Println(err.Error())21}

Error

Using AI Code Generation

1import (2type Validation struct {3}4func (v *Validation) Validate(pattern string) bool {5	re := regexp.MustCompile(pattern)6	if !re.MatchString(v.String) {7		v.Error = fmt.Sprintf("String '%s' does not match pattern '%s'", v.String, pattern)8	}9}10func (v *Validation) Validate(pattern string) bool {11	re := regexp.MustCompile(pattern)12	if !re.MatchString(v.String) {13		v.Error = fmt.Sprintf("String '%s' does not match pattern '%s'", v.String, pattern)14	}15}16func (v *Validation) Validate(pattern string) bool {17	re := regexp.MustCompile(pattern)18	if !re.MatchString(v.String) {19		v.Error = fmt.Sprintf("String '%s' does not match pattern '%s'", v.String, pattern)20	}21}22func (v *Validation) Validate(pattern string) bool {23	re := regexp.MustCompile(pattern)24	if !re.MatchString(v.String) {25		v.Error = fmt.Sprintf("String '%s' does not match pattern '%s'", v.String, pattern)26	}27}28func (v *Validation) Validate(pattern string) bool {29	re := regexp.MustCompile(pattern)30	if !re.MatchString(v.String) {31		v.Error = fmt.Sprintf("String '%s' does not match pattern '%s'", v.String, pattern)

Error

Using AI Code Generation

1func main() {2	err = validation.Validate("1234")3	fmt.Println(err)4	err = validation.Validate("12345")5	fmt.Println(err)6}

Error

Using AI Code Generation

1if err != nil {2fmt.Println(err.Error())3}4if err != nil {5fmt.Println(err)6}7if err != nil {8fmt.Println(err)9}10if err != nil {11fmt.Println(err)12}13if err != nil {14fmt.Println(err)15}16if err != nil {17fmt.Println(err)18}19if err != nil {20fmt.Println(err)21}22if err != nil {

Error

Using AI Code Generation

1if err := validation.ValidateStruct(&user); err != nil {2  fmt.Println(err.Error())3}4if err := validation.ValidateStruct(&user); err != nil {5  fmt.Println(err.Errors)6}7if err := validation.ValidateStruct(&user); err != nil {8  fmt.Println(err.Errors)9}10if err := validation.ValidateStruct(&user); err != nil {11  fmt.Println(err.Error())12}13if err := validation.ValidateStruct(&user); err != nil {14  fmt.Println(err.Error())15}

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