V012

ValidationStandard

check for custom SchemaValidateFunc that implement validation.IntAtLeast(), validation.IntAtMost(), or validation.IntBetween()

The V012 analyzer reports when custom SchemaValidateFunc declarations can be replaced with validation.IntAtLeast(), validation.IntAtMost(), or validation.IntBetween().

Examples

func validateExampleThing(v interface{}, k string) (ws []string, errors []error) {
  value := v.(int)

  if value < 1 || value > 255 {
    errors = append(errors, fmt.Errorf("%q must be between 1 and 255: %d", k, value))
  }

  return
}

// directly in Schema
ValidateFunc: validation.IntBetween(1, 255),

// or saving as a variable
var validateExampleThing = validation.IntBetween(1, 255)

// or replacing the function
func validateExampleThing() schema.SchemaValidateFunc {
  return validation.IntBetween(1, 255)
}

Ignoring reports

Singular reports can be ignored by adding a //lintignore:V012 Go code comment at the end of the offending line or on the line immediately preceding, e.g.

//lintignore:V012
func validateExampleThing(v interface{}, k string) (ws []string, errors []error) {
  value := v.(int)

  if value < 1 || value > 255 {
    errors = append(errors, fmt.Errorf("%q must be between 1 and 255: %d", k, value))
  }

  return
}

This page is generated from passes/V012/README.md, which lives beside the analyzer.