token.gno

 1package transfer
 2
 3import (
 4	"chain"
 5	"strconv"
 6
 7	"gno.land/p/nt/ufmt/v0"
 8)
 9
10// Token defines a struct which represents a token to be transferred.
11type Token struct {
12	// the token denomination
13	Denom Denom
14	// the token amount to be transferred
15	Amount string
16}
17
18// NewToken constructs a Token with the given native base denom and amount
19// (no trace, no prefix hops). Provided so external callers — which cannot
20// construct foreign-stamped composite literals under v2 borrow rule #1 —
21// can still build Token values for tests and packet assembly.
22func NewToken(baseDenom, amount string) Token {
23	return Token{
24		Denom:  NewDenom(baseDenom),
25		Amount: amount,
26	}
27}
28
29// ToCoin converts a Token to an chain.Coin.
30//
31// The function parses the Token.Amount field and returns a new sdk.Coin with
32// the IBCDenom of the Token's Denom field and the parsed Amount.
33// If the Amount cannot be parsed, an error is returned with a wrapped error
34// message.
35func (t Token) ToCoin() (chain.Coin, error) {
36	amt, err := t.AmountInt64()
37	if err != nil {
38		return chain.Coin{}, err
39	}
40	return chain.NewCoin(t.Denom.IBCDenom(), amt), nil
41}
42
43func (t Token) AmountInt64() (int64, error) {
44	amt, err := strconv.ParseInt(t.Amount, 10, 64)
45	if err != nil {
46		return 0, ufmt.Errorf("unable to parse amount %q into int64", t.Amount)
47	}
48	return amt, nil
49}