// MutateManageOffer for Amount sets the ManageOfferOp's Amount field
func (m Amount) MutateManageOffer(o interface{}) (err error) {
switch o := o.(type) {
default:
err = errors.New("Unexpected operation type")
case *xdr.ManageOfferOp:
o.Amount, err = amount.Parse(string(m))
case *xdr.CreatePassiveOfferOp:
o.Amount, err = amount.Parse(string(m))
}
return
}
// MutatePayment for Asset sets the PaymentOp's Asset field
func (m CreditAmount) MutatePayment(o *xdr.PaymentOp) (err error) {
o.Amount, err = amount.Parse(m.Amount)
if err != nil {
return
}
length := len(m.Code)
var issuer xdr.AccountId
err = setAccountId(m.Issuer, &issuer)
if err != nil {
return
}
switch {
case length >= 1 && length <= 4:
var code [4]byte
byteArray := []byte(m.Code)
copy(code[:], byteArray[0:length])
asset := xdr.AssetAlphaNum4{code, issuer}
o.Asset, err = xdr.NewAsset(xdr.AssetTypeAssetTypeCreditAlphanum4, asset)
case length >= 5 && length <= 12:
var code [12]byte
byteArray := []byte(m.Code)
copy(code[:], byteArray[0:length])
asset := xdr.AssetAlphaNum12{code, issuer}
o.Asset, err = xdr.NewAsset(xdr.AssetTypeAssetTypeCreditAlphanum12, asset)
default:
err = errors.New("Asset code length is invalid")
}
return
}
// IsValidAmount returns true if amount is valid
func IsValidAmount(a string) bool {
_, err := amount.Parse(a)
if err != nil {
return false
}
return true
}
// MutatePayment for PayWithPath sets the PathPaymentOp's SendAsset,
// SendMax and Path fields
func (m PayWithPath) MutatePayment(o interface{}) (err error) {
var pathPaymentOp *xdr.PathPaymentOp
var ok bool
if pathPaymentOp, ok = o.(*xdr.PathPaymentOp); !ok {
return errors.New("Unexpected operation type")
}
// MaxAmount
pathPaymentOp.SendMax, err = amount.Parse(m.MaxAmount)
if err != nil {
return
}
// Path
var path []xdr.Asset
var xdrAsset xdr.Asset
for _, asset := range m.Path {
xdrAsset, err = asset.ToXdrObject()
if err != nil {
return err
}
path = append(path, xdrAsset)
}
pathPaymentOp.Path = path
// Asset
pathPaymentOp.SendAsset, err = m.Asset.ToXdrObject()
return
}
// MutatePayment for NativeAmount sets the PaymentOp's currency field to
// native and sets its amount to the provided integer
func (m NativeAmount) MutatePayment(o *xdr.PaymentOp) (err error) {
o.Asset, err = xdr.NewAsset(xdr.AssetTypeAssetTypeNative, nil)
if err != nil {
return
}
o.Amount, err = amount.Parse(m.Amount)
return
}
// GetAmount returns a native amount (i.e. 64-bit integer) by parsing
// the string at the provided name in accordance with the stellar client
// conventions
func (base *Base) GetAmount(name string) (result xdr.Int64) {
var err error
result, err = amount.Parse(base.GetString("destination_amount"))
if err != nil {
base.SetInvalidField(name, err)
return
}
return
}
// MutatePayment for Asset sets the PaymentOp's Asset field
func (m CreditAmount) MutatePayment(o interface{}) (err error) {
switch o := o.(type) {
default:
err = errors.New("Unexpected operation type")
case *xdr.PaymentOp:
o.Amount, err = amount.Parse(m.Amount)
if err != nil {
return
}
o.Asset, err = createAlphaNumAsset(m.Code, m.Issuer)
case *xdr.PathPaymentOp:
o.DestAmount, err = amount.Parse(m.Amount)
if err != nil {
return
}
o.DestAsset, err = createAlphaNumAsset(m.Code, m.Issuer)
}
return
}
// MutatePayment for NativeAmount sets the PaymentOp's currency field to
// native and sets its amount to the provided integer
func (m NativeAmount) MutatePayment(o interface{}) (err error) {
switch o := o.(type) {
default:
err = errors.New("Unexpected operation type")
case *xdr.PaymentOp:
o.Amount, err = amount.Parse(m.Amount)
if err != nil {
return
}
o.Asset, err = xdr.NewAsset(xdr.AssetTypeAssetTypeNative, nil)
case *xdr.PathPaymentOp:
o.DestAmount, err = amount.Parse(m.Amount)
if err != nil {
return
}
o.DestAsset, err = xdr.NewAsset(xdr.AssetTypeAssetTypeNative, nil)
}
return
}
func TestParse(t *testing.T) {
for _, v := range Tests {
o, err := amount.Parse(v.S)
if err != nil {
t.Errorf("Couldn't parse %s: %v+", v.S, err)
continue
}
if o != v.I {
t.Errorf("%s parsed to %d, not %d", v.S, o, v.I)
}
}
}
// MutateCreateAccount for NativeAmount sets the CreateAccountOp's
// StartingBalance field
func (m NativeAmount) MutateCreateAccount(o *xdr.CreateAccountOp) (err error) {
o.StartingBalance, err = amount.Parse(m.Amount)
return
}
// MutateChangeTrust for Limit sets the ChangeTrustOp's Limit field
func (m Limit) MutateChangeTrust(o *xdr.ChangeTrustOp) (err error) {
o.Limit, err = amount.Parse(string(m))
return
}