Crate cosmwasm_std

Modules

testing

Macros

create_entry_points	This macro generates the boilerplate required to call into the contract-specific logic from the entry-points to the Wasm module.
create_entry_points_with_migration	This macro is very similar to the create_entry_points macro, except it also requires the migrate method:

Structs

Addr	A human readable address.
AllBalanceResponse
Attribute	An key value pair that is used in the context of event attributes in logs
BalanceResponse
Binary	Binary is a wrapper around Vec to add base64 de/serialization with serde. It also adds some helper methods to help encode inline.
BlockInfo
CanonicalAddr
Coin
ContractInfo
Decimal	A fixed-point decimal value with 18 fractional digits, i.e. Decimal(1_000_000_000_000_000_000) == 1.0
Deps
DepsMut
Empty	An empty struct that serves as a placeholder in different places, such as contracts that don’t set a custom message.
Env
Event	A full Cosmos SDK event as documented in https://docs.cosmos.network/v0.42/core/events.html.
HumanAddr	Deprecated
MemoryStorage
MessageInfo	Additional information from MsgInstantiateContract and MsgExecuteContract, which is passed along with the contract execution message into the instantiate and execute entry points.
OverflowError
OwnedDeps	Holds all external dependencies of the contract. Designed to allow easy dependency injection at runtime. This cannot be copied or cloned since it would behave differently for mock storages and a bridge storage in the VM.
QuerierWrapper
Reply	The result object returned to reply. We always get the ID from the submessage back and then must handle success and error cases ourselves.
Response	A response of a contract entry point, such as instantiate, execute or migrate.
SubMsg	A submessage that will guarantee a reply call on success or error, depending on the reply_on setting. If you do not need to process the result, use regular messages instead.
SubMsgExecutionResponse	The information we get back from a successful sub-call, with full sdk events
Timestamp	A point in time in nanosecond precision.
Uint64	A thin wrapper around u64 that is using strings for JSON encoding/decoding, such that the full u64 range can be used for clients that convert JSON numbers to floats, like JavaScript and jq.
Uint128	A thin wrapper around u128 that is using strings for JSON encoding/decoding, such that the full u128 range can be used for clients that convert JSON numbers to floats, like JavaScript and jq.

Enums

BankMsg	The message types of the bank module.
BankQuery
ContractResult	This is the final result type that is created and serialized in a contract for every init/execute/migrate call. The VM then deserializes this type to distinguish between successful and failed executions.
CosmosMsg
OverflowOperation
QueryRequest
RecoverPubkeyError
ReplyOn	Use this to define when the contract gets a response callback. If you only need it for errors or success you can select just those in order to save gas.
StdError	Structured error type for init, execute and query.
SystemError	SystemError is used for errors inside the VM and is API friendly (i.e. serializable).
SystemResult	This is the outer result type returned by a querier to the contract.
VerificationError
WasmMsg	The message types of the wasm module.
WasmQuery

Traits

Api	Api are callbacks to system functions implemented outside of the wasm modules. Currently it just supports address conversion but we could add eg. crypto functions here.
CustomQuery	A trait that is required to avoid conflicts with other query types like BankQuery and WasmQuery in generic implementations. You need to implement it in your custom query type.
Fraction	A fraction p/q with integers p and q.
Querier
Storage	Storage provides read and write access to a persistent storage. If you only want to provide read access, provide &Storage

Functions

attr	Creates a new Attribute.
coin	A shorthand constructor for Coin
coins	A shortcut constructor for a set of one denomination of coins
from_binary
from_slice
has_coins	has_coins returns true if the list of coins has at least the required amount
to_binary
to_vec
wasm_execute	Shortcut helper as the construction of WasmMsg::Instantiate can be quite verbose in contract code
wasm_instantiate	Shortcut helper as the construction of WasmMsg::Instantiate can be quite verbose in contract code.

Type Definitions

QuerierResult	A short-hand alias for the two-level query result (1. accessing the contract, 2. executing query in the contract)
QueryResponse
StdResult	The return type for init, execute and query. Since the error type cannot be serialized to JSON, this is only available within the contract and its unit tests.

Attribute Macros

entry_point

This attribute macro generates the boilerplate required to call into the contract-specific logic from the entry-points to the Wasm module.