Struct StateOverride 

pub struct StateOverride {
    pub balance: Option<U256>,
    pub nonce: Option<U256>,
    pub code: Option<Bytes>,
    pub storage: Option<StorageOverride>,
    pub move_precompile_to_address: Option<Address>,
}

Per-account state overrides applied during eth_call and similar simulation methods.

All fields are optional. Only the fields that are set will be overridden; the rest of the account’s state is read from the chain as normal.

Conforms to the Geth state override object specification.

Fields

balance: Option<U256>

Fake balance to set for the account before executing the call.

nonce: Option<U256>

Fake nonce to set for the account before executing the call.

code: Option<Bytes>

Fake EVM bytecode to inject into the account before executing the call.

storage: Option<StorageOverride>

Storage override specifying either a full replacement or a partial diff. These two modes are mutually exclusive per the Geth specification.

move_precompile_to_address: Option<Address>

Moves the precompile at the account’s address to the specified address. Useful for overriding a precompile’s code with custom logic while still being able to invoke the original precompile at a different address.

Trait Implementations

impl Clone for StateOverride

fn clone(&self) -> StateOverride

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StateOverride

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

Formats the value using the given formatter.

impl Decode for StateOverride

fn decode<__CodecInputEdqy: Input>( __codec_input_edqy: &mut __CodecInputEdqy, ) -> Result<Self, Error>

Attempt to deserialise the value from input.

fn decode_into<I>( input: &mut I, dst: &mut MaybeUninit<Self>, ) -> Result<DecodeFinished, Error>

where I: Input,

Attempt to deserialize the value from input into a pre-allocated piece of memory.

fn skip<I>(input: &mut I) -> Result<(), Error>

where I: Input,

Attempt to skip the encoded value from input.

fn encoded_fixed_size() -> Option<usize>

Returns the fixed encoded size of the type.

impl Default for StateOverride

fn default() -> StateOverride

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for StateOverride

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Encode for StateOverride

fn size_hint(&self) -> usize

If possible give a hint of expected size of the encoding.

fn encode_to<__CodecOutputEdqy: Output + ?Sized>( &self, __codec_dest_edqy: &mut __CodecOutputEdqy, )

Convert self to a slice and append it to the destination.

fn encode(&self) -> Vec<u8>

Convert self to an owned vector.

fn using_encoded<R, F>(&self, f: F) -> R

where F: FnOnce(&[u8]) -> R,

Convert self to a slice and then invoke the given closure with it.

fn encoded_size(&self) -> usize

Calculates the encoded size.

impl PartialEq for StateOverride

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for StateOverride

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl TypeInfo for StateOverride

type Identity = StateOverride

The type identifying for which type info is provided.

fn type_info() -> Type

Returns the static type identifier for Self.

impl EncodeLike for StateOverride

impl Eq for StateOverride

impl StructuralPartialEq for StateOverride