Struct sputnikvm::PCMut
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[src]
pub struct PCMut<'a, P: Patch> { /* fields omitted */ }
Represents a mutable program counter in EVM.
Methods
impl<'a, P: Patch> PCMut<'a, P>[src]
fn code(&self) -> &[u8][src]
Get the code bytearray.
fn position(&self) -> usize[src]
Get the current program counter position.
fn opcode_position(&self) -> usize[src]
Get the current opcode position. Should only be used when debugging.
fn is_valid(&self, position: usize) -> bool[src]
Returns true if the position is a valid jump destination. If
not, returns false.
fn is_end(&self) -> bool[src]
Check whether the PC is ended. Next read on this PC would
result in PCError::PCOverflow.
fn peek_opcode(&self) -> Result<Opcode, OnChainError>[src]
Peek the next opcode.
fn peek(&self) -> Result<Instruction, OnChainError>[src]
Peek the next instruction.
impl<'a, P: Patch> PCMut<'a, P>[src]
fn new(code: &'a [u8], valids: &'a Valids, position: &'a mut usize) -> Self[src]
Create a new program counter from the given code.
fn jump(&mut self, position: usize) -> Result<(), OnChainError>[src]
Jump to a position in the code. The destination must be valid to jump.
fn read(&mut self) -> Result<Instruction, OnChainError>[src]
Read the next instruction and step the program counter.