Token registry design

[shaunxw]

Types

• struct TokenInfo
  • id: MultiLocation
  • decimals: u8
  • #cfg(feature = full) extra: ExtraTokenInfo
• struct ExtraTokenInfo
  • name: &'static str
  • symbol: &'static str
  • description: &' static str
  • icon: Option<&'static str>

Traits

• ReserveChainLocation: should be implemented by each TokenInfo.
  • fn location() -> MultiLocation: returns the reserve chain location of a token.

Registry

• mod polkadot
  • mod acala
    • const ACA: TokenInfo
    • const aUSD: TokenInfo
    • const all: [TokenInfo] = [ACA, aUSD]
  • mod plasm
    • use plasm_token_info::*
    • assuming Plasm have published their token info in crate plasm_token_info
• mod kusama
  • mod karura
    • const KAR: TokenInfo
    • const kUSD: TokenInfo
    • const all: [TokenInfo] = [KAR, kUSD]

Dump

• Add a bin crate and script to dump JSON file.
  • dump_token_info
    • generate a JSON file with all the token info

[stechu]

A registry would be extremely useful. Kudos to the proposal!
For the TokenInfo struct, it might be helpful to add the associated coin-type from BIP-44. https://github.com/satoshilabs/slips/blob/master/slip-0044.md
This would be helpful information for both hardware and software wallets like ledger.