1use crate::AsmError;
2
3use super::operand::Operand;
4
5const NOREG: Operand = Operand::new();
6
7pub trait Emitter {
8 fn emit(&mut self, opcode: i64, op0: &Operand, op1: &Operand, op2: &Operand, op3: &Operand);
9
10 fn emit_n(&mut self, opcode: i64, ops: &[&Operand]) {
11 match ops {
12 [op0] => self.emit(opcode, op0, &NOREG, &NOREG, &NOREG),
13
14 [op0, op1] => self.emit(opcode, op0, op1, &NOREG, &NOREG),
15
16 [op0, op1, op2] => self.emit(opcode, op0, op1, op2, &NOREG),
17 [op0, op1, op2, op3] => self.emit(opcode, op0, op1, op2, op3),
18 _ => unreachable!(),
19 }
20 }
21
22 fn last_error(&self) -> Option<AsmError> {
23 None
24 }
25}