go-enum/example/sql_str_enum.go

// Code generated by go-enum DO NOT EDIT.
// Version: example
// Revision: example
// Build Date: example
// Built By: example

//go:build example
// +build example

package example

import (
	"database/sql/driver"
	"errors"
	"fmt"
)

const (
	// JobStatePending is a JobState of type Pending.
	JobStatePending JobState = iota
	// JobStateProcessing is a JobState of type Processing.
	JobStateProcessing
	// JobStateCompleted is a JobState of type Completed.
	JobStateCompleted
	// JobStateFailed is a JobState of type Failed.
	JobStateFailed
)

var ErrInvalidJobState = errors.New("not a valid JobState")

const _JobStateName = "pendingprocessingcompletedfailed"

var _JobStateMap = map[JobState]string{
	JobStatePending:    _JobStateName[0:7],
	JobStateProcessing: _JobStateName[7:17],
	JobStateCompleted:  _JobStateName[17:26],
	JobStateFailed:     _JobStateName[26:32],
}

// String implements the Stringer interface.
func (x JobState) String() string {
	if str, ok := _JobStateMap[x]; ok {
		return str
	}
	return fmt.Sprintf("JobState(%d)", x)
}

// IsValid provides a quick way to determine if the typed value is
// part of the allowed enumerated values
func (x JobState) IsValid() bool {
	_, ok := _JobStateMap[x]
	return ok
}

var _JobStateValue = map[string]JobState{
	_JobStateName[0:7]:   JobStatePending,
	_JobStateName[7:17]:  JobStateProcessing,
	_JobStateName[17:26]: JobStateCompleted,
	_JobStateName[26:32]: JobStateFailed,
}

// ParseJobState attempts to convert a string to a JobState.
func ParseJobState(name string) (JobState, error) {
	if x, ok := _JobStateValue[name]; ok {
		return x, nil
	}
	return JobState(0), fmt.Errorf("%s is %w", name, ErrInvalidJobState)
}

var errJobStateNilPtr = errors.New("value pointer is nil") // one per type for package clashes

// Scan implements the Scanner interface.
func (x *JobState) Scan(value interface{}) (err error) {
	if value == nil {
		*x = JobState(0)
		return
	}

	// A wider range of scannable types.
	// driver.Value values at the top of the list for expediency
	switch v := value.(type) {
	case int64:
		*x = JobState(v)
	case string:
		*x, err = ParseJobState(v)
	case []byte:
		*x, err = ParseJobState(string(v))
	case JobState:
		*x = v
	case int:
		*x = JobState(v)
	case *JobState:
		if v == nil {
			return errJobStateNilPtr
		}
		*x = *v
	case uint:
		*x = JobState(v)
	case uint64:
		*x = JobState(v)
	case *int:
		if v == nil {
			return errJobStateNilPtr
		}
		*x = JobState(*v)
	case *int64:
		if v == nil {
			return errJobStateNilPtr
		}
		*x = JobState(*v)
	case float64: // json marshals everything as a float64 if it's a number
		*x = JobState(v)
	case *float64: // json marshals everything as a float64 if it's a number
		if v == nil {
			return errJobStateNilPtr
		}
		*x = JobState(*v)
	case *uint:
		if v == nil {
			return errJobStateNilPtr
		}
		*x = JobState(*v)
	case *uint64:
		if v == nil {
			return errJobStateNilPtr
		}
		*x = JobState(*v)
	case *string:
		if v == nil {
			return errJobStateNilPtr
		}
		*x, err = ParseJobState(*v)
	}

	return
}

// Value implements the driver Valuer interface.
func (x JobState) Value() (driver.Value, error) {
	return x.String(), nil
}

type NullJobState struct {
	JobState JobState
	Valid    bool
}

func NewNullJobState(val interface{}) (x NullJobState) {
	x.Scan(val) // yes, we ignore this error, it will just be an invalid value.
	return
}

// Scan implements the Scanner interface.
func (x *NullJobState) Scan(value interface{}) (err error) {
	if value == nil {
		x.JobState, x.Valid = JobState(0), false
		return
	}

	err = x.JobState.Scan(value)
	x.Valid = (err == nil)
	return
}

// Value implements the driver Valuer interface.
func (x NullJobState) Value() (driver.Value, error) {
	if !x.Valid {
		return nil, nil
	}
	return x.JobState.String(), nil
}