neo-go/pkg/rpcclient/nep.go
Anna Shaleva 6b21ad9922 *: replace interface{} with any keyword
Everywhere including examples, external interop APIs, bindings generators
code and in other valuable places. A couple of `interface{}` usages are
intentionally left in the CHANGELOG.md, documentation and tests.
2023-04-04 13:22:42 +03:00

60 lines
1.8 KiB
Go

package rpcclient
import (
"fmt"
"github.com/nspcc-dev/neo-go/pkg/rpcclient/unwrap"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neo-go/pkg/wallet"
)
// nepDecimals invokes `decimals` NEP* method on the specified contract.
func (c *Client) nepDecimals(tokenHash util.Uint160) (int64, error) {
return unwrap.Int64(c.reader.Call(tokenHash, "decimals"))
}
// nepSymbol invokes `symbol` NEP* method on the specified contract.
func (c *Client) nepSymbol(tokenHash util.Uint160) (string, error) {
return unwrap.PrintableASCIIString(c.reader.Call(tokenHash, "symbol"))
}
// nepTotalSupply invokes `totalSupply` NEP* method on the specified contract.
func (c *Client) nepTotalSupply(tokenHash util.Uint160) (int64, error) {
return unwrap.Int64(c.reader.Call(tokenHash, "totalSupply"))
}
// nepBalanceOf invokes `balanceOf` NEP* method on the specified contract.
func (c *Client) nepBalanceOf(tokenHash, acc util.Uint160, tokenID []byte) (int64, error) {
params := []any{acc}
if tokenID != nil {
params = append(params, tokenID)
}
return unwrap.Int64(c.reader.Call(tokenHash, "balanceOf", params...))
}
// nepTokenInfo returns full NEP* token info.
func (c *Client) nepTokenInfo(tokenHash util.Uint160, standard string) (*wallet.Token, error) {
cs, err := c.GetContractStateByHash(tokenHash)
if err != nil {
return nil, err
}
var isStandardOK bool
for _, st := range cs.Manifest.SupportedStandards {
if st == standard {
isStandardOK = true
break
}
}
if !isStandardOK {
return nil, fmt.Errorf("token %s does not support %s standard", tokenHash.StringLE(), standard)
}
symbol, err := c.nepSymbol(tokenHash)
if err != nil {
return nil, err
}
decimals, err := c.nepDecimals(tokenHash)
if err != nil {
return nil, err
}
return wallet.NewToken(tokenHash, cs.Manifest.Name, symbol, decimals, standard), nil
}