Simplified file structure

src/asm/RegisterNumber.go

@@ -0,0 +1,29 @@
+package asm
+
+import (
+	"fmt"
+
+	"git.akyoto.dev/cli/q/src/cpu"
+)
+
+// RegisterNumber operates with a register and a number.
+type RegisterNumber struct {
+	Register cpu.Register
+	Number   int
+}
+
+// String returns a human readable version.
+func (data *RegisterNumber) String() string {
+	return fmt.Sprintf("%s, %d", data.Register, data.Number)
+}
+
+// RegisterNumber adds an instruction with a register and a number.
+func (a *Assembler) RegisterNumber(mnemonic Mnemonic, reg cpu.Register, number int) {
+	a.Instructions = append(a.Instructions, Instruction{
+		Mnemonic: mnemonic,
+		Data: &RegisterNumber{
+			Register: reg,
+			Number:   number,
+		},
+	})
+}