ink_env::types

Trait Environment

pub trait Environment: Clone {
    type AccountId: 'static + Codec + MaxEncodedLen + CodecAsType + Clone + PartialEq + Eq + Ord + AsRef<[u8]> + AsMut<[u8]>;
    type Balance: 'static + Codec + CodecAsType + Copy + Clone + PartialEq + Eq + AtLeast32BitUnsigned + FromLittleEndian;
    type Hash: 'static + Codec + MaxEncodedLen + CodecAsType + Copy + Clone + Clear + PartialEq + Eq + Ord + AsRef<[u8]> + AsMut<[u8]>;
    type Timestamp: 'static + Codec + CodecAsType + Copy + Clone + PartialEq + Eq + AtLeast32BitUnsigned + FromLittleEndian;
    type BlockNumber: 'static + Codec + CodecAsType + Copy + Clone + PartialEq + Eq + AtLeast32BitUnsigned + FromLittleEndian;
    type ChainExtension;
    type EventRecord: 'static + Codec;

    const MAX_EVENT_TOPICS: usize;
}
Expand description

The environmental types usable by contracts defined with ink!.

Required Associated Constants§

const MAX_EVENT_TOPICS: usize

The maximum number of supported event topics provided by the runtime.

The value must match the maximum number of supported event topics of the used runtime.

Required Associated Types§

type AccountId: 'static + Codec + MaxEncodedLen + CodecAsType + Clone + PartialEq + Eq + Ord + AsRef<[u8]> + AsMut<[u8]>

The account id type.

type Balance: 'static + Codec + CodecAsType + Copy + Clone + PartialEq + Eq + AtLeast32BitUnsigned + FromLittleEndian

The type of balances.

type Hash: 'static + Codec + MaxEncodedLen + CodecAsType + Copy + Clone + Clear + PartialEq + Eq + Ord + AsRef<[u8]> + AsMut<[u8]>

The type of hash.

type Timestamp: 'static + Codec + CodecAsType + Copy + Clone + PartialEq + Eq + AtLeast32BitUnsigned + FromLittleEndian

The type of a timestamp.

type BlockNumber: 'static + Codec + CodecAsType + Copy + Clone + PartialEq + Eq + AtLeast32BitUnsigned + FromLittleEndian

The type of block number.

type ChainExtension

The chain extension for the environment.

This is a type that is defined through the #[ink::chain_extension] procedural macro. For more information about usage and definition click this link.

type EventRecord: 'static + Codec

TODO comment

Object Safety§

This trait is not object safe.

Implementors§