Simplify instructions

hal/instructions.go

@@ -163,6 +163,22 @@ var InstructionJump = newJumpInstruction("JUMP", func(accumulator float64) bool
 	return true
 })
 
+var addInstr = func(accumulator, value float64) float64 {
+	return accumulator + value
+}
+
+var subInstr = func(accumulator, value float64) float64 {
+	return accumulator - value
+}
+
+var mulInstr = func(accumulator, value float64) float64 {
+	return accumulator * value
+}
+
+var divInstr = func(accumulator, value float64) float64 {
+	return accumulator / value
+}
+
 func newMathNumInstruction(name string, operation func(accumulator, value float64) float64) *Instruction {
 	return &Instruction{
 		Name: name,
@@ -173,21 +189,13 @@ func newMathNumInstruction(name string, operation func(accumulator, value float6
 	}
 }
 
-var InstructionAddNum = newMathNumInstruction("ADDNUM", func(accumulator, value float64) float64 {
-	return accumulator + value
-})
+var InstructionAddNum = newMathNumInstruction("ADDNUM", addInstr)
 
-var InstructionSubNum = newMathNumInstruction("SUBNUM", func(accumulator, value float64) float64 {
-	return accumulator - value
-})
+var InstructionSubNum = newMathNumInstruction("SUBNUM", subInstr)
 
-var InstructionMulNum = newMathNumInstruction("MULNUM", func(accumulator, value float64) float64 {
-	return accumulator * value
-})
+var InstructionMulNum = newMathNumInstruction("MULNUM", mulInstr)
 
-var InstructionDivNum = newMathNumInstruction("DIVNUM", func(accumulator, value float64) float64 {
-	return accumulator / value
-})
+var InstructionDivNum = newMathNumInstruction("DIVNUM", divInstr)
 
 func newMathInstruction(name string, operation func(accumulator, register float64) float64) *Instruction {
 	return &Instruction{
@@ -204,18 +212,10 @@ func newMathInstruction(name string, operation func(accumulator, register float6
 	}
 }
 
-var InstructionAdd = newMathInstruction("ADD", func(accumulator, value float64) float64 {
-	return accumulator + value
-})
+var InstructionAdd = newMathInstruction("ADD", addInstr)
 
-var InstructionSub = newMathInstruction("SUB", func(accumulator, value float64) float64 {
-	return accumulator - value
-})
+var InstructionSub = newMathInstruction("SUB", subInstr)
 
-var InstructionMul = newMathInstruction("MUL", func(accumulator, value float64) float64 {
-	return accumulator * value
-})
+var InstructionMul = newMathInstruction("MUL", mulInstr)
 
-var InstructionDiv = newMathInstruction("DIV", func(accumulator, value float64) float64 {
-	return accumulator / value
-})
+var InstructionDiv = newMathInstruction("DIV", divInstr)