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package generic |
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3
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import ( |
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"fmt" |
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"reflect" |
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"strconv" |
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7
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) |
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type Number struct { |
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int int64 |
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float float64 |
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isInt bool |
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isNil bool |
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} |
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func NewNumber(value interface{}) (*Number, error) { |
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1 |
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v := reflect.ValueOf(value) |
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1 |
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if v.Kind() == reflect.Ptr { |
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1 |
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if v.IsNil() { |
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1 |
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return &Number{isNil: true}, nil |
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} |
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1 |
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return numberFromValue(v.Elem()) |
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} |
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1 |
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return numberFromValue(v) |
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} |
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func NewNumberFromInt(value int64) Number { |
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1 |
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return Number{ |
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int: value, |
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float: float64(value), |
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isInt: true, |
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} |
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} |
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func NewNumberFromFloat(value float64) Number { |
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1 |
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return Number{ |
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int: int64(value), |
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float: value, |
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isInt: false, |
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} |
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} |
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func MustNewNumber(value interface{}) Number { |
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1 |
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n, err := NewNumber(value) |
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1 |
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if err != nil { |
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1 |
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panic(err) |
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} |
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return *n |
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} |
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func numberFromValue(v reflect.Value) (*Number, error) { |
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1 |
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switch v.Kind() { |
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case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64: |
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i := v.Int() |
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return &Number{int: i, float: float64(i), isInt: true}, nil |
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case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64: |
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i := int64(v.Uint()) |
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return &Number{int: i, float: float64(i), isInt: true}, nil |
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case reflect.Float32, reflect.Float64: |
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f := v.Float() |
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i := int64(f) |
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return &Number{int: i, float: f, isInt: f == float64(i)}, nil |
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} |
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1 |
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return nil, NotNumericError{value: v} |
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} |
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func (n Number) IsNil() bool { |
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1 |
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return n.isNil |
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} |
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func (n Number) IsZero() bool { |
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1 |
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if n.isNil { |
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return false |
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} |
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1 |
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if n.isInt { |
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return n.int == 0 |
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} |
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1 |
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return n.float == 0 |
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} |
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func (n Number) IsEqualTo(v Number) bool { |
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if n.isNil || v.isNil { |
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return false |
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} |
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if n.isInt && v.isInt { |
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return n.int == v.int |
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} |
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1 |
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return n.float == v.float |
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} |
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func (n Number) IsGreaterThan(v Number) bool { |
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1 |
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if n.isNil || v.isNil { |
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return false |
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} |
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1 |
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if n.isInt && v.isInt { |
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1 |
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return n.int > v.int |
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} |
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1 |
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return n.float > v.float |
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} |
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func (n Number) IsLessThan(v Number) bool { |
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1 |
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if n.isNil || v.isNil { |
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return false |
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} |
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1 |
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if n.isInt && v.isInt { |
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1 |
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return n.int < v.int |
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} |
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1 |
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return n.float < v.float |
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} |
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117
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func (n Number) String() string { |
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1 |
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if n.isInt { |
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1 |
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return strconv.FormatInt(n.int, 10) |
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} |
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122
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1 |
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return fmt.Sprint(n.float) |
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} |
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124
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muonsoft /
validation
