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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,31 +1,53 @@ | ||
| package utils | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "math/big" | ||
| "strings" | ||
|
|
||
| "github.com/ethereum/go-ethereum/params" | ||
| ) | ||
|
|
||
| func ToWei(amount float64) *big.Int { | ||
| eth := big.NewFloat(amount) | ||
| truncInt, _ := eth.Int(nil) | ||
| truncInt = new(big.Int).Mul(truncInt, big.NewInt(params.Ether)) | ||
| fracStr := strings.Split(fmt.Sprintf("%.18f", eth), ".")[1] | ||
| fracStr += strings.Repeat("0", 18-len(fracStr)) | ||
| fracInt, _ := new(big.Int).SetString(fracStr, 10) | ||
| wei := new(big.Int).Add(truncInt, fracInt) | ||
| eth = eth.Mul(eth, big.NewFloat(1e18)) | ||
| wei, _ := eth.Int(new(big.Int)) | ||
| return wei | ||
| } | ||
|
|
||
| func ToGWei(amount float64) *big.Int { | ||
| eth := big.NewFloat(amount) | ||
| truncInt, _ := eth.Int(nil) | ||
| truncInt = new(big.Int).Mul(truncInt, big.NewInt(params.Ether)) | ||
| fracStr := strings.Split(fmt.Sprintf("%.9f", eth), ".")[1] | ||
| fracStr += strings.Repeat("0", 9-len(fracStr)) | ||
| fracInt, _ := new(big.Int).SetString(fracStr, 10) | ||
| wei := new(big.Int).Add(truncInt, fracInt) | ||
| return wei | ||
| func ToBigInt(s string) *big.Int { | ||
| // trim quotation mark | ||
| s = strings.Trim(s, `"`) | ||
|
|
||
| isNeg := strings.HasPrefix(s, "-") | ||
| if isNeg { | ||
| return nil | ||
| } | ||
|
|
||
| s = strings.ToLower(s) | ||
| if strings.HasPrefix(s, "0x") { | ||
| s = strings.TrimPrefix(s, "0x") | ||
| i, _ := new(big.Int).SetString(s, 16) | ||
| return i | ||
| } | ||
|
|
||
| if strings.HasPrefix(s, "0b") { | ||
| s = strings.TrimPrefix(s, "0b") | ||
| i, _ := new(big.Int).SetString(s, 2) | ||
| return i | ||
| } | ||
|
|
||
| if strings.HasPrefix(s, "0o") { | ||
| s = strings.TrimPrefix(s, "0o") | ||
| i, _ := new(big.Int).SetString(s, 8) | ||
| return i | ||
| } | ||
|
|
||
| if strings.Contains(s, "e") { | ||
| flt, _, err := big.ParseFloat(s, 10, 0, big.ToNearestEven) | ||
| if err == nil { | ||
| i, _ := flt.Int(new(big.Int)) | ||
| return i | ||
| } | ||
| } | ||
|
|
||
| i, _ := new(big.Int).SetString(s, 10) | ||
| return i | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,55 @@ | ||
| package utils | ||
|
|
||
| import ( | ||
| "math/big" | ||
| "reflect" | ||
| "testing" | ||
| ) | ||
|
|
||
| func TestToBigInt(t *testing.T) { | ||
| type args struct { | ||
| s string | ||
| } | ||
| tests := []struct { | ||
| name string | ||
| args args | ||
| want *big.Int | ||
| }{ | ||
| {`invalid`, args{`xyz`}, nil}, | ||
| {`1e4`, args{"1e4"}, big.NewInt(1e4)}, | ||
| {`1e18`, args{"1e18"}, big.NewInt(1e18)}, | ||
| {`1`, args{"1"}, big.NewInt(1)}, | ||
| {`-1`, args{`"-1"`}, nil}, | ||
| {`0x1`, args{`0x1`}, big.NewInt(1)}, | ||
| {`0b1`, args{`0b1`}, big.NewInt(1)}, | ||
| {`0o1`, args{`0o1`}, big.NewInt(1)}, | ||
| } | ||
| for _, tt := range tests { | ||
| t.Run(tt.name, func(t *testing.T) { | ||
| if got := ToBigInt(tt.args.s); !reflect.DeepEqual(got, tt.want) { | ||
| t.Errorf("ToBigInt() = %v, want %v", got, tt.want) | ||
| } | ||
| }) | ||
| } | ||
| } | ||
|
|
||
| func TestToWei(t *testing.T) { | ||
| type args struct { | ||
| amount float64 | ||
| } | ||
| tests := []struct { | ||
| name string | ||
| args args | ||
| want *big.Int | ||
| }{ | ||
| {"0.1", args{0.1}, big.NewInt(1e17)}, | ||
| {"0.01", args{0.01}, big.NewInt(1e16)}, | ||
| } | ||
| for _, tt := range tests { | ||
| t.Run(tt.name, func(t *testing.T) { | ||
| if got := ToWei(tt.args.amount); !reflect.DeepEqual(got, tt.want) { | ||
| t.Errorf("ToWei() = %v, want %v", got, tt.want) | ||
| } | ||
| }) | ||
| } | ||
| } |
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