Enum InstructionTables

pub enum InstructionTables<'a, H> {
    Plain(InstructionTable<H>),
    Boxed(BoxedInstructionTable<'a, H>),
}

Instruction set that contains plain instruction table that contains simple fn function pointer. and Boxed Fn variant that contains Box<dyn Fn()> function pointer that can be used with closured.

Note that Plain variant gives us 10-20% faster Interpreter execution.

Boxed variant can be used to wrap plain function pointer with closure.

Variants

Plain(InstructionTable<H>)

Boxed(BoxedInstructionTable<'a, H>)

Implementations

impl<H: Host> InstructionTables<'_, H>

pub const fn new_plain<SPEC: Spec>() -> Self

Creates a plain instruction table for the given spec.

impl<'a, H: Host + 'a> InstructionTables<'a, H>

pub fn insert_boxed(&mut self, opcode: u8, instruction: BoxedInstruction<'a, H>)

Inserts a boxed instruction into the table with the specified index.

This will convert the table into the BoxedInstructionTable variant if it is currently a plain instruction table, before inserting the instruction.

pub fn insert(&mut self, opcode: u8, instruction: Instruction<H>)

Inserts the instruction into the table with the specified index.

pub fn convert_boxed(&mut self)

Converts the current instruction table to a boxed variant. If the table is already boxed, this is a no-op.