Terraswap: Common Types

This is a collection of common types and the queriers which are commonly used in terraswap contracts.

Data Types

AssetInfo

AssetInfo is a convience wrapper to represent the native token and the contract token as a single type.

```rust

[serde(renameall = "snakecase")]

pub enum AssetInfo { Token { contract_addr: HumanAddr }, NativeToken { denom: String }, } ```

Asset

It contains asset info with the amount of token.

rust pub struct Asset { pub info: AssetInfo, pub amount: Uint128, }

PairInfo

It is used to represent response data of Pair-Info-Querier

rust pub struct PairInfo { pub contract_addr: HumanAddr, pub asset_infos: [AssetInfo; 2], }

Queriers

Native Token Balance Querier

It uses CosmWasm standard interface to query the account balance to chain.

rust pub fn query_balance<S: Storage, A: Api, Q: Querier>( deps: &Extern<S, A, Q>, account_addr: &HumanAddr, denom: String, ) -> StdResult<Uint128>

Token Balance Querier

It provides simliar query interface with Native-Token-Balance-Querier for CW20 token balance.

rust pub fn query_token_balance<S: Storage, A: Api, Q: Querier>( deps: &Extern<S, A, Q>, contract_addr: &HumanAddr, account_addr: &HumanAddr, ) -> StdResult<Uint128>

Token Supply Querier

It provides token supply querier for CW20 token contract.

rust pub fn query_supply<S: Storage, A: Api, Q: Querier>( deps: &Extern<S, A, Q>, contract_addr: &HumanAddr, ) -> StdResult<Uint128>

Pair Info Querier

It also provides the query interface to query avaliable terraswap pair contract info. Any contract can query pair info to terraswap factory contract.

rust pub fn query_pair_contract<S: Storage, A: Api, Q: Querier>( deps: &Extern<S, A, Q>, contract_addr: &HumanAddr, asset_infos: &[AssetInfo; 2], ) -> StdResult<HumanAddr>

Liquidity Token Querier

It returns liquidity token contract address of terraswap pair contract.

rust pub fn query_liquidity_token<S: Storage, A: Api, Q: Querier>( deps: &Extern<S, A, Q>, contract_addr: &HumanAddr, ) -> StdResult<HumanAddr>