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token.go
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token.go
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package ergo
/*
#include "ergo.h"
*/
import "C"
import (
"iter"
"runtime"
"unsafe"
)
// TokenId (32-byte digest)
type TokenId interface {
// Base16 returns the TokenId as base16 encoded string
Base16() string
// Equals checks if provided TokenId is same
Equals(tokenId TokenId) bool
pointer() C.TokenIdPtr
}
type tokenId struct {
p C.TokenIdPtr
}
func newTokenId(t *tokenId) TokenId {
runtime.SetFinalizer(t, finalizeTokenId)
return t
}
// NewTokenId creates a TokenId from a base16-encoded string (32 byte digest)
func NewTokenId(s string) (TokenId, error) {
tokenIdStr := C.CString(s)
defer C.free(unsafe.Pointer(tokenIdStr))
var p C.TokenIdPtr
errPtr := C.ergo_lib_token_id_from_str(tokenIdStr, &p)
err := newError(errPtr)
if err.isError() {
return nil, err.error()
}
t := &tokenId{p: p}
return newTokenId(t), nil
}
// NewTokenIdFromBoxId creates a TokenId from ergo box id (32 byte digest)
func NewTokenIdFromBoxId(boxId BoxId) TokenId {
var p C.TokenIdPtr
C.ergo_lib_token_id_from_box_id(boxId.pointer(), &p)
t := &tokenId{p: p}
return newTokenId(t)
}
func (t *tokenId) Equals(tokenId TokenId) bool {
res := C.ergo_lib_token_id_eq(t.p, tokenId.pointer())
return bool(res)
}
func finalizeTokenId(t *tokenId) {
C.ergo_lib_token_id_delete(t.p)
}
func (t *tokenId) Base16() string {
var outStr *C.char
C.ergo_lib_token_id_to_str(t.p, &outStr)
defer C.ergo_lib_delete_string(outStr)
result := C.GoString(outStr)
return result
}
func (t *tokenId) pointer() C.TokenIdPtr {
return t.p
}
// TokenAmount is token amount with bound checks
type TokenAmount interface {
// Int64 converts TokenAmount to int64
Int64() int64
// Equals checks if provided TokenAmount is same
Equals(tokenAmount TokenAmount) bool
pointer() C.TokenAmountPtr
}
type tokenAmount struct {
p C.TokenAmountPtr
}
func newTokenAmount(t *tokenAmount) TokenAmount {
runtime.SetFinalizer(t, finalizeTokenAmount)
return t
}
// NewTokenAmount creates TokenAmount from int64
func NewTokenAmount(amount int64) (TokenAmount, error) {
var p C.TokenAmountPtr
errPtr := C.ergo_lib_token_amount_from_i64(C.int64_t(amount), &p)
err := newError(errPtr)
if err.isError() {
return nil, err.error()
}
t := &tokenAmount{p: p}
return newTokenAmount(t), nil
}
func (t *tokenAmount) Int64() int64 {
amount := C.ergo_lib_token_amount_as_i64(t.p)
return int64(amount)
}
func (t *tokenAmount) Equals(tokenAmount TokenAmount) bool {
res := C.ergo_lib_token_amount_eq(t.p, tokenAmount.pointer())
return bool(res)
}
func (t *tokenAmount) pointer() C.TokenAmountPtr {
return t.p
}
func finalizeTokenAmount(t *tokenAmount) {
C.ergo_lib_token_amount_delete(t.p)
}
// Token represented with TokenId paired with its TokenAmount
type Token interface {
// Id returns TokenId of the Token
Id() TokenId
// Amount returns TokenAmount of the Token
Amount() TokenAmount
// JsonEIP12 returns json representation of Token as string according to EIP-12 https://github.com/ergoplatform/eips/pull/23
JsonEIP12() (string, error)
// Equals checks if provided Token is same
Equals(token Token) bool
pointer() C.TokenPtr
}
type token struct {
p C.TokenPtr
}
func newToken(t *token) Token {
runtime.SetFinalizer(t, finalizeToken)
return t
}
// NewToken creates Token from provided TokenId and TokenAmount
func NewToken(tokenId TokenId, tokenAmount TokenAmount) Token {
var p C.TokenPtr
C.ergo_lib_token_new(tokenId.pointer(), tokenAmount.pointer(), &p)
t := &token{p: p}
return newToken(t)
}
func (t *token) Id() TokenId {
var tokenIdPtr C.TokenIdPtr
C.ergo_lib_token_get_id(t.p, &tokenIdPtr)
tId := &tokenId{p: tokenIdPtr}
return newTokenId(tId)
}
func (t *token) Amount() TokenAmount {
var tokenAmountPtr C.TokenAmountPtr
C.ergo_lib_token_get_amount(t.p, &tokenAmountPtr)
tAmount := &tokenAmount{p: tokenAmountPtr}
return newTokenAmount(tAmount)
}
func (t *token) JsonEIP12() (string, error) {
var outStr *C.char
errPtr := C.ergo_lib_token_to_json_eip12(t.p, &outStr)
defer C.ergo_lib_delete_string(outStr)
err := newError(errPtr)
if err.isError() {
return "", err.error()
}
result := C.GoString(outStr)
return result, nil
}
func (t *token) Equals(token Token) bool {
res := C.ergo_lib_token_eq(t.p, token.pointer())
return bool(res)
}
func (t *token) pointer() C.TokenPtr {
return t.p
}
func finalizeToken(t *token) {
C.ergo_lib_token_delete(t.p)
}
// Tokens an ordered collection of Token
type Tokens interface {
// Len returns the length of the collection
Len() int
// Get returns the Token at the provided index if it exists
Get(index int) (Token, error)
// Add adds provided Token to the end of the collection
Add(token Token)
// All returns an iterator over all Token inside the collection
All() iter.Seq2[int, Token]
pointer() C.TokensPtr
}
type tokens struct {
p C.TokensPtr
}
func newTokens(t *tokens) Tokens {
runtime.SetFinalizer(t, finalizeTokens)
return t
}
// NewTokens creates an empty Tokens collection
func NewTokens() Tokens {
var p C.TokensPtr
C.ergo_lib_tokens_new(&p)
t := &tokens{p: p}
return newTokens(t)
}
func (t *tokens) Len() int {
res := C.ergo_lib_tokens_len(t.p)
return int(res)
}
func (t *tokens) Get(index int) (Token, error) {
var p C.TokenPtr
res := C.ergo_lib_tokens_get(t.p, C.uintptr_t(index), &p)
err := newError(res.error)
if err.isError() {
return nil, err.error()
}
to := &token{p: p}
return newToken(to), nil
}
func (t *tokens) Add(token Token) {
C.ergo_lib_tokens_add(token.pointer(), t.p)
}
func (t *tokens) All() iter.Seq2[int, Token] {
return func(yield func(int, Token) bool) {
for i := 0; i < t.Len(); i++ {
tk, err := t.Get(i)
if err != nil {
return
}
if !yield(i, tk) {
return
}
}
}
}
func (t *tokens) pointer() C.TokensPtr {
return t.p
}
func finalizeTokens(t *tokens) {
C.ergo_lib_tokens_delete(t.p)
}