/
datatype.go
52 lines (46 loc) · 1.06 KB
/
datatype.go
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package model
import (
"fmt"
"strconv"
"strings"
)
const (
String DataType = "string"
Integer DataType = "integer"
Boolean DataType = "boolean"
)
type DataType string
func NewDataType(dataType string) (DataType, error) {
switch strings.ToLower(dataType) {
case string(String):
return String, nil
case string(Integer):
return Integer, nil
case string(Boolean):
return Boolean, nil
default:
return "", fmt.Errorf("DataType '%s' is not supported", dataType)
}
}
func (dt DataType) Get(value string) (interface{}, error) {
var err error
var typedValue interface{}
switch dt {
case Boolean:
typedValue, err = strconv.ParseBool(strings.ToLower(value))
if err != nil {
return typedValue, dt.fireParseError(value)
}
case Integer:
typedValue, err = strconv.ParseInt(value, 10, 64)
if err != nil {
return typedValue, dt.fireParseError(value)
}
default:
typedValue = value
}
return typedValue, nil
}
func (dt DataType) fireParseError(value string) error {
return fmt.Errorf("Value '%s' is not compatible with DataType '%s'", value, dt)
}