Struct Instruction 

pub struct Instruction(/* private fields */);

Implementations

impl Instruction

pub fn new(word: InstructionWord) -> Self

pub fn abc(opcode: Opcode, a: u8, b: u8, c: u8) -> Self

pub fn ad(opcode: Opcode, a: u8, d: i16) -> Self

pub fn ae(opcode: Opcode, e: i32) -> Self

pub fn word(self) -> InstructionWord

pub fn with_d(self, d: i16) -> Self

pub fn with_c(self, c: u8) -> Self

pub fn try_opcode(self) -> Result<Opcode, InvalidOpcode>

Decodes the opcode byte when this word is an instruction header.

pub unsafe fn opcode_unchecked(self) -> Opcode

Decodes the opcode byte without checking that it is in range.

Safety

The word must be an instruction header from bytecode that has already passed opcode validation. AUX words and VM cache/sentinel words must not be decoded through this function.

pub fn a(self) -> u8

pub fn b(self) -> u8

pub fn c(self) -> u8

pub fn d(self) -> i16

pub fn e(self) -> i32

pub fn try_jump_target(self, pc: u32) -> Result<Option<i32>, InvalidOpcode>

Computes the jump target for a checked instruction header.

pub unsafe fn jump_target_unchecked(self, pc: u32) -> Option<i32>

Computes the jump target without checking the opcode byte.

Safety

The word must satisfy the safety requirements of Self::opcode_unchecked. Non-jump opcodes are valid inputs and return None.

Trait Implementations

impl Clone for Instruction

fn clone(&self) -> Instruction

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Instruction

impl Debug for Instruction

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

Formats the value using the given formatter.

impl Eq for Instruction

impl PartialEq for Instruction

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Instruction