Enum passerine::common::opcode::Opcode

#[repr(u8)]pub enum Opcode {
    Con,
    Save,
    Load,
    Call,
    Return,
    Clear,
}

This enum represents a single opcode. Under the hood, it's just a byte. This allows non opcode bytes to be inserted in bytecode streams. | Opcode | operands, top first | byte-streams | Does | | ------ | ------------------- | ------------ | ---------------------------------------------- | | Con | | Const Index | Pushes value from constant table onto stack | | Save | Data | | Stores Data in Symbol | | Load | | Local Index | Replaces symbol on top of stack with its value | | Clear | | | Clears stack to last frame/local | | Call | Fun, Data | | Calls the function passing Data as arg | | Return | Data | | Clears the frame, leaving value on the stack |

Variants

Con

Save

Load

Call

Return

Clear

Implementations

impl Opcode

pub fn from_byte(byte: u8) -> Opcode

Convert a raw byte to an opcode. Note that non-opcode bytes should never be interpreted as an opcode. Under the hood, this is just a transmute, so the regular cautions apply. This should never cause a crash and if it does, the vm's designed to crash hard so it'll be pretty obvious.

Trait Implementations

impl Debug for Opcode

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

Formats the value using the given formatter.