token.bend source

token.bend on the hub · documented module

import Baseimport ./sol.bend as Simport ./types.bend as Ty# SPL Token account words (165-byte layout, little-endian u32 view):#   0..7   mint#   8..15  owner#   16..17 amount (full SPL u64)# Mint decimals live at byte 44 (low byte of word 11).## TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA# SPL Token program id, Tokenkeg...VQ5DA.def token_id() -> Ty.Pubkey:  Ty.Pk{    3791052038,    2476828119,    1189202905,    2893671374,    3984962588,    2436324191,    2247461946,    2835414910,  }# 42 words (168 bytes) covers the 165-byte token account.def TOKEN_WORDS() -> Nat:  42ndef token_mint(data: List<&2, U32>) -> Ty.Pubkey:  S.get_pubkey(data, 0n)def token_owner(data: List<&2, U32>) -> Ty.Pubkey:  S.get_pubkey(data, 8n)def token_amount(data: List<&2, U32>) -> Ty.u64:  S.get_u64(data, 16n)def token_set_amount(data: List<&2, U32>, amt: Ty.u64) -> List<&2, U32>:  S.set_u64(data, 16n, amt)# Low byte of mint word 11 (byte 44).def mint_decimals(data: List<&2, U32>) -> U32:  U32.and(S.get_u32(data, 11n), 255)# Account owner is the Token program.def acc_is_token(+a: Ty.Account) -> Bool:  Ty.Pubkey.eq(S.owner(a), token_id())# Both token accounts name the same mint.def token_same_mint(+a: List<&2, U32>, +b: List<&2, U32>) -> Bool:  Ty.Pubkey.eq(token_mint(a), token_mint(b))# Token-account owner word equals owner.def token_owned(+data: List<&2, U32>, +owner: Ty.Pubkey) -> Bool:  Ty.Pubkey.eq(token_owner(data), owner)