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introduce new big.Int based monetary int
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,39 +1,102 @@ | ||
| package core | ||
|
|
||
| type MonetaryInt int64 | ||
| import ( | ||
| "errors" | ||
| "math/big" | ||
| ) | ||
|
|
||
| func (a MonetaryInt) Add(b MonetaryInt) MonetaryInt { | ||
| return a + b | ||
| type MonetaryInt big.Int | ||
|
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| func (a *MonetaryInt) Add(b *MonetaryInt) *MonetaryInt { | ||
| if a == nil { | ||
| a = NewMonetaryInt(0) | ||
| } | ||
|
|
||
| if b == nil { | ||
| b = NewMonetaryInt(0) | ||
| } | ||
|
|
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| return (*MonetaryInt)(big.NewInt(0).Add((*big.Int)(a), (*big.Int)(b))) | ||
| } | ||
|
|
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| func (a *MonetaryInt) Sub(b *MonetaryInt) *MonetaryInt { | ||
| if a == nil { | ||
| a = NewMonetaryInt(0) | ||
| } | ||
|
|
||
| if b == nil { | ||
| b = NewMonetaryInt(0) | ||
| } | ||
|
|
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| return (*MonetaryInt)(big.NewInt(0).Sub((*big.Int)(a), (*big.Int)(b))) | ||
| } | ||
|
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| func (a *MonetaryInt) Neg() *MonetaryInt { | ||
| return (*MonetaryInt)(big.NewInt(0).Neg((*big.Int)(a))) | ||
| } | ||
|
|
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| func (a *MonetaryInt) Lte(b *MonetaryInt) bool { | ||
| return (*big.Int)(a).Cmp((*big.Int)(b)) <= 0 | ||
| } | ||
|
|
||
| func (a *MonetaryInt) Gte(b *MonetaryInt) bool { | ||
| return (*big.Int)(a).Cmp((*big.Int)(b)) >= 0 | ||
| } | ||
|
|
||
| func (a *MonetaryInt) Lt(b *MonetaryInt) bool { | ||
| return (*big.Int)(a).Cmp((*big.Int)(b)) < 0 | ||
| } | ||
|
|
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| func (a *MonetaryInt) Ltz() bool { | ||
| return (*big.Int)(a).Cmp(big.NewInt(0)) < 0 | ||
| } | ||
|
|
||
| func (a *MonetaryInt) Gt(b *MonetaryInt) bool { | ||
| return (*big.Int)(a).Cmp((*big.Int)(b)) > 0 | ||
| } | ||
|
|
||
| func (a *MonetaryInt) Eq(b *MonetaryInt) bool { | ||
| return (*big.Int)(a).Cmp((*big.Int)(b)) == 0 | ||
| } | ||
|
|
||
| func (a MonetaryInt) Sub(b MonetaryInt) MonetaryInt { | ||
| return a - b | ||
| func (a *MonetaryInt) Uint64() uint64 { | ||
| return (*big.Int)(a).Uint64() | ||
| } | ||
|
|
||
| func (a MonetaryInt) Neg() MonetaryInt { | ||
| return -a | ||
| func (a *MonetaryInt) String() string { | ||
| if a == nil { | ||
| return "0" | ||
| } | ||
|
|
||
| return (*big.Int)(a).String() | ||
| } | ||
|
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||
| func (a MonetaryInt) Lte(b MonetaryInt) bool { | ||
| return a <= b | ||
| func (a *MonetaryInt) UnmarshalJSON(b []byte) error { | ||
| return (*big.Int)(a).UnmarshalJSON(b) | ||
| } | ||
|
|
||
| func (a MonetaryInt) Gte(b MonetaryInt) bool { | ||
| return a >= b | ||
| func (a *MonetaryInt) MarshalJSON() ([]byte, error) { | ||
| return (*big.Int)(a).MarshalJSON() | ||
| } | ||
|
|
||
| func (a MonetaryInt) Lt(b MonetaryInt) bool { | ||
| return a < b | ||
| func (a *MonetaryInt) MarshalText() ([]byte, error) { | ||
| return (*big.Int)(a).MarshalText() | ||
| } | ||
|
|
||
| func (a MonetaryInt) Gt(b MonetaryInt) bool { | ||
| return a > b | ||
| func (a *MonetaryInt) UnmarshalText(b []byte) error { | ||
| return (*big.Int)(a).UnmarshalText(b) | ||
| } | ||
|
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| func (a MonetaryInt) Eq(b MonetaryInt) bool { | ||
| return a == b | ||
| func NewMonetaryInt(i int64) *MonetaryInt { | ||
| return (*MonetaryInt)(big.NewInt(i)) | ||
| } | ||
|
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| func NewMonetaryInt(i int64) MonetaryInt { | ||
| return MonetaryInt(i) | ||
| func ParseMonetaryInt(s string) (*MonetaryInt, error) { | ||
| i, ok := big.NewInt(0).SetString(s, 10) | ||
|
|
||
| if !ok { | ||
| return nil, errors.New("invalid monetary int") | ||
| } | ||
|
|
||
| return (*MonetaryInt)(i), nil | ||
| } |
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