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integer.go
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integer.go
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package schema
import (
"github.com/benpate/derp"
"github.com/benpate/exp"
"github.com/benpate/rosetta/compare"
"github.com/benpate/rosetta/convert"
"github.com/benpate/rosetta/list"
"github.com/benpate/rosetta/null"
)
// Integer represents an integer data type within a JSON-Schema.
type Integer struct {
Default null.Int64 `json:"default"`
Minimum null.Int64 `json:"minimum"`
Maximum null.Int64 `json:"maximum"`
MultipleOf null.Int64 `json:"multipleOf"`
BitSize int `json:"bitSize"`
Enum []int `json:"emum"`
Required bool `json:"required"`
RequiredIf string `json:"required-if"`
}
/******************************************
* Element Interface
******************************************/
// DefaultValue returns the default value for this element type
func (element Integer) DefaultValue() any {
switch element.BitSize {
case 8:
return int8(element.Default.Int64())
case 16:
return int16(element.Default.Int64())
case 32:
return int32(element.Default.Int64())
case 64:
return int64(element.Default.Int64())
default:
return int(element.Default.Int64())
}
}
// IsRequired returns TRUE if this element is a required field
func (element Integer) IsRequired() bool {
return element.Required
}
// Validate validates a value using this schema
func (element Integer) Validate(value any) error {
intValue, ok := toInt64(value)
if !ok {
return derp.NewValidationError(" must be an integer")
}
if element.Required {
if intValue == 0 {
return derp.NewValidationError("integer value is required")
}
}
if element.Minimum.IsPresent() {
if intValue < element.Minimum.Int64() {
return derp.NewValidationError("minimum integer value is " + convert.String(element.Minimum))
}
}
if element.Maximum.IsPresent() {
if intValue > element.Maximum.Int64() {
return derp.NewValidationError("maximum integer value is " + convert.String(element.Maximum))
}
}
if element.MultipleOf.IsPresent() {
if (intValue % element.MultipleOf.Int64()) != 0 {
return derp.NewValidationError("must be a multiple of " + convert.String(element.MultipleOf))
}
}
if len(element.Enum) > 0 {
if !compare.Contains(element.Enum, intValue) {
return derp.NewValidationError("must contain one of the specified values")
}
}
return nil
}
// ValidateRequiredIf returns an error if the conditional expression is true but the value is empty
func (element Integer) ValidateRequiredIf(schema Schema, path list.List, globalValue any) error {
if element.RequiredIf != "" {
if schema.Match(globalValue, exp.Parse(element.RequiredIf)) {
if localValue, err := schema.Get(globalValue, path.String()); err != nil {
return derp.Wrap(err, "schema.Integer.ValidateRequiredIf", "Error getting value for path", path)
} else if compare.IsZero(localValue) {
return derp.NewValidationError("field: " + path.String() + " is required based on condition: " + element.RequiredIf)
}
}
}
return nil
}
func (element Integer) GetElement(name string) (Element, bool) {
if name == "" {
return element, true
}
return nil, false
}
func (element Integer) Inherit(parent Element) {
// Do nothing
}
/***********************************
* Enumerator Interface
***********************************/
// Enumerate implements the "Enumerator" interface
func (element Integer) Enumerate() []string {
return convert.SliceOfString(element.Enum)
}
/***********************************
* Marshal / Unmarshal Methods
***********************************/
// MarshalMap populates object data into a map[string]any
func (element Integer) MarshalMap() map[string]any {
result := map[string]any{
"type": TypeInteger,
}
if element.Default.IsPresent() {
result["default"] = element.Default.Int64()
}
if element.Minimum.IsPresent() {
result["minimum"] = element.Minimum.Int64()
}
if element.Maximum.IsPresent() {
result["maximum"] = element.Maximum.Int64()
}
if element.MultipleOf.IsPresent() {
result["multipleOf"] = element.MultipleOf.Int64()
}
if len(element.Enum) > 0 {
result["enum"] = element.Enum
}
return result
}
// UnmarshalMap tries to populate this object using data from a map[string]any
func (element *Integer) UnmarshalMap(data map[string]any) error {
var err error
if convert.String(data["type"]) != "integer" {
return derp.NewInternalError("schema.Integer.UnmarshalMap", "Data is not type 'integer'", data)
}
element.Default = convert.NullInt64(data["default"])
element.Minimum = convert.NullInt64(data["minimum"])
element.Maximum = convert.NullInt64(data["maximum"])
element.MultipleOf = convert.NullInt64(data["multipleOf"])
element.Required = convert.Bool(data["required"])
element.Enum = convert.SliceOfInt(data["enum"])
return err
}
func toInt64(value any) (int64, bool) {
switch typed := value.(type) {
case int:
return int64(typed), true
case int8:
return int64(typed), true
case int16:
return int64(typed), true
case int32:
return int64(typed), true
case int64:
return int64(typed), true
default:
return 0, false
}
}