Struct Instructions 

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

A sequence of bytecode instructions.

Instructions are represented as a byte vector where each instruction consists of an opcode byte followed by zero or more operand bytes. All multi-byte operands are encoded in big-endian format.

Implementations

impl Instructions

pub const fn new() -> Self

Creates an empty instruction sequence.

pub fn from_bytes(bytes: Vec<u8>) -> Self

Creates an instruction sequence from a byte vector.

pub fn as_bytes(&self) -> &[u8]

Returns a reference to the underlying byte slice.

pub fn len(&self) -> usize

Returns the number of bytes in this instruction sequence.

pub fn is_empty(&self) -> bool

Returns true if this instruction sequence is empty.

pub fn extend(&mut self, other: &Self)

Appends another instruction sequence to this one.

pub fn extend_from_bytes(&mut self, bytes: &[u8])

Appends raw bytes to this instruction sequence.

pub fn replace_bytes(&mut self, pos: usize, bytes: &[u8])

Replaces bytes in the instruction stream starting at pos.

Used by the compiler to patch forward jump targets after the jump destination is known.

pub fn truncate(&mut self, len: usize)

Truncates the instruction stream to the given length.

Used by the compiler to remove trailing instructions (e.g., removing a trailing OpPop from block expressions).

Trait Implementations

impl AsRef<[u8]> for Instructions

fn as_ref(&self) -> &[u8]

Converts this type into a shared reference of the (usually inferred) input type.

impl Clone for Instructions

fn clone(&self) -> Instructions

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Instructions

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

Formats the value using the given formatter.

impl Default for Instructions

fn default() -> Instructions

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Instructions

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for Instructions

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

Formats the value using the given formatter.

impl From<Instructions> for Vec<u8>

fn from(ins: Instructions) -> Self

Converts to this type from the input type.

impl From<Vec<u8>> for Instructions

fn from(bytes: Vec<u8>) -> Self

Converts to this type from the input type.

impl PartialEq for Instructions

fn eq(&self, other: &Instructions) -> 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 Instructions

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for Instructions

impl StructuralPartialEq for Instructions