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PrecompileMoves

ethrex_levm::precompiles

Struct PrecompileMoves 

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pub struct PrecompileMoves { /* private fields */ }
Expand description

Precompile-dispatch changes requested by a geth State Override Set. Simulation-only: this is None on every consensus path, in which case precompile dispatch is bit-identical to is_precompile.

Two independent effects, both matching geth’s StateOverride.Apply:

  • movePrecompileToAddress makes a destination address dispatch the precompile that lives at the named source.
  • Any overridden address stops dispatching as a precompile. geth does delete(precompiles, addr) for every address in the override set, not only the sources of a move, so overriding 0x04’s balance alone takes the identity precompile out of the active set and leaves an ordinary account behind.

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impl PrecompileMoves

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pub fn from_parts( moves: impl IntoIterator<Item = (Address, Address)>, overridden: impl IntoIterator<Item = Address>, ) -> Self

Build from the (precompile_address, destination_address) relocations and the full set of overridden addresses.

A later pair wins if two moves name the same destination, which is also what geth’s StateOverride.Apply does: it assigns precompiles[dest] per move, in address order, and only refuses a destination that is itself overridden.

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pub fn is_empty(&self) -> bool

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pub fn is_suppressed(&self, address: &Address) -> bool

True if address is overridden and so no longer dispatches as a precompile.

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pub fn source_for(&self, address: &Address) -> Option<Address>

The address whose precompile implementation should run when address is called, or None if address is not a relocation destination.

Trait Implementations§

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impl Clone for PrecompileMoves

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fn clone(&self) -> PrecompileMoves

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for PrecompileMoves

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

Formats the value using the given formatter. Read more
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impl Default for PrecompileMoves

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fn default() -> PrecompileMoves

Returns the “default value” for a type. Read more
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impl Eq for PrecompileMoves

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impl PartialEq for PrecompileMoves

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

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

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

Inequality operator !=. Read more
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impl StructuralPartialEq for PrecompileMoves

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use malachite_base::strings::ToDebugString;

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