Struct BalancerV3State 

pub struct BalancerV3State { /* private fields */ }

A single Balancer V3 pool quoted through balancer_maths_rust.

The storage-derived parts of the state are re-read from the VM on every ProtocolSim::delta_transition rather than patched from the delta: the values the maths needs (live balances, token rates, amplification) are derived from storage that other contracts — rate providers above all — own. What registration fixed forever (tokens, scaling factors, weights, the hook check) is kept from decode time.

Trait Implementations

impl Clone for BalancerV3State

fn clone(&self) -> BalancerV3State

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for BalancerV3State

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for BalancerV3State

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for BalancerV3State

fn eq(&self, other: &BalancerV3State) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl ProtocolSim for BalancerV3State

fn fee(&self) -> f64

Returns the fee of the protocol as ratio

fn spot_price( &self, base: &Token, quote: &Token, ) -> Result<f64, SimulationError>

Returns the protocol’s current spot buy price for base in units of quote.

fn get_amount_out( &self, amount_in: BigUint, token_in: &Token, token_out: &Token, ) -> Result<GetAmountOutResult, SimulationError>

Returns the amount out given an amount in and input/output tokens.

fn get_limits( &self, sell_token: Bytes, buy_token: Bytes, ) -> Result<(BigUint, BigUint), SimulationError>

Computes the maximum amount that can be traded between two tokens.

fn delta_transition( &mut self, delta: ProtocolStateDelta, _tokens: &HashMap<Bytes, Token>, _balances: &Balances, ) -> Result<(), TransitionError>

Decodes and applies a protocol state delta to the state

fn clone_box(&self) -> Box<dyn ProtocolSim>

Clones the protocol state as a trait object. This allows the state to be cloned when it is being used as a Box<dyn ProtocolSim>.

fn as_any(&self) -> &dyn Any

Allows downcasting of the trait object to its underlying type.

fn as_any_mut(&mut self) -> &mut dyn Any

Allows downcasting of the trait object to its mutable underlying type.

fn eq(&self, other: &dyn ProtocolSim) -> bool

Compares two protocol states for equality. This method must be implemented to define how two protocol states are considered equal (used for tests).

fn query_pool_swap( &self, params: &QueryPoolSwapParams, ) -> Result<PoolSwap, SimulationError>

Calculates the swap volume required to achieve the provided goal when trading against this pool.

fn as_indicatively_priced( &self, ) -> Result<&(dyn IndicativelyPriced + 'static), SimulationError>

Cast as IndicativelyPriced. This is necessary for RFQ protocols

impl Serialize for BalancerV3State

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for BalancerV3State

impl TryFromWithBlock<ComponentWithState, BlockHeader> for BalancerV3State

async fn try_from_with_header( value: ComponentWithState, block: BlockHeader, _account_balances: &HashMap<Bytes, HashMap<Bytes, Bytes>>, _all_tokens: &HashMap<Bytes, Token>, decoder_context: &DecoderContext, ) -> Result<Self, Self::Error>

Decodes a vm:balancer_v3 snapshot.

type Error = InvalidSnapshotError