Enum OpCode 

pub enum OpCode {
    Known(Mnemonic),
    Unknown(u8),
}

EVM operation code.

Variants

Known(Mnemonic)

A known opcode represented as a mnemonic.

Unknown(u8)

An unknown opcode represented as a byte.

Implementations

impl OpCode

pub const fn is_known(&self) -> bool

Returns true if the enum is OpCode::Known otherwise false

pub const fn is_unknown(&self) -> bool

Returns true if the enum is OpCode::Unknown otherwise false

impl OpCode

pub const fn from_byte(byte: u8) -> Self

Convert a byte into an OpCode, returning OpCode::Unknown if no known mnemonic exists.

Example

assert_eq!(OpCode::from_byte(0x5A), OpCode::Known(Mnemonic::GAS));
assert_eq!(OpCode::from_byte(0xF), OpCode::Unknown(0xF));

pub const fn try_from_byte(byte: u8) -> Option<Self>

Try to convert a byte into a known mnemonic. Returns None if the opcode is unknown.

Example

assert_eq!(OpCode::try_from_byte(0x5A), Some(OpCode::Known(Mnemonic::GAS)));
assert_eq!(OpCode::try_from_byte(0xF), None);

pub const fn into_byte(self) -> u8

Convert opcode into a byte.

Example

assert_eq!(OpCode::Known(Mnemonic::GAS).into_byte(), 0x5A);
assert_eq!(OpCode::Unknown(0xF).into_byte(), 0xF);

pub const fn is_push(&self) -> bool

Returns a value signifying whether this opcode is of the type PUSHx.

Example

assert_eq!(OpCode::Known(Mnemonic::PUSH7).is_push(), true);
assert_eq!(OpCode::Known(Mnemonic::GAS).is_push(), false);

pub const fn is_dup(&self) -> bool

Returns a value signifying whether this opcode is of the type DUPx.

Example

assert_eq!(OpCode::Known(Mnemonic::DUP2).is_dup(), true);
assert_eq!(OpCode::Known(Mnemonic::GAS).is_dup(), false);

pub const fn is_swap(&self) -> bool

Returns a value signifying whether this opcode is of the type SWAPx.

Example

assert_eq!(OpCode::Known(Mnemonic::SWAP2).is_swap(), true);
assert_eq!(OpCode::Known(Mnemonic::GAS).is_swap(), false);

pub const fn is_log(&self) -> bool

Returns a value signifying whether this opcode is of the type LOGx.

Example

assert_eq!(OpCode::Known(Mnemonic::LOG2).is_log(), true);
assert_eq!(OpCode::Known(Mnemonic::GAS).is_log(), false);

pub const fn is_terminator(&self) -> bool

Returns true for opcodes that terminate execution of the smart contract.

Example

assert_eq!(OpCode::Known(Mnemonic::RETURN).is_terminator(), true);
assert_eq!(OpCode::Unknown(0xF).is_terminator(), true);
assert_eq!(OpCode::Known(Mnemonic::GAS).is_terminator(), false);

Trait Implementations

impl Binary for OpCode

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

Formats the value using the given formatter.

impl Clone for OpCode

fn clone(&self) -> OpCode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for OpCode

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

Formats the value using the given formatter.

impl Display for OpCode

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

Formats the value using the given formatter.

impl From<&OpCode> for u8

fn from(opcode: &OpCode) -> Self

Converts to this type from the input type.

impl From<Mnemonic> for OpCode

fn from(value: Mnemonic) -> Self

Converts to this type from the input type.

impl From<OpCode> for u8

fn from(opcode: OpCode) -> Self

Converts to this type from the input type.

impl From<u8> for OpCode

fn from(byte: u8) -> Self

Converts to this type from the input type.

impl Hash for OpCode

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl LowerHex for OpCode

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

Formats the value using the given formatter.

impl Octal for OpCode

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

Formats the value using the given formatter.

impl Ord for OpCode

fn cmp(&self, other: &OpCode) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq<Mnemonic> for OpCode

fn eq(&self, other: &Mnemonic) -> 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 PartialEq<OpCode> for Mnemonic

fn eq(&self, other: &OpCode) -> 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 PartialEq<u8> for OpCode

fn eq(&self, other: &u8) -> 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 PartialEq for OpCode

fn eq(&self, other: &OpCode) -> 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 PartialOrd<Mnemonic> for OpCode

fn partial_cmp(&self, other: &Mnemonic) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl PartialOrd<OpCode> for Mnemonic

fn partial_cmp(&self, other: &OpCode) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl PartialOrd<u8> for OpCode

fn partial_cmp(&self, other: &u8) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl PartialOrd for OpCode

fn partial_cmp(&self, other: &OpCode) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl UpperHex for OpCode

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

Formats the value using the given formatter.

impl Copy for OpCode

impl Eq for OpCode

impl StructuralPartialEq for OpCode