Added label type

src/asm/Instructions.go

@@ -2,12 +2,12 @@ package asm
 
 // Comment adds a comment at the current position.
 func (a *Assembler) Comment(text string) {
-	a.Label(COMMENT, text)
+	a.Label(COMMENT, Label{Name: text, Type: CommentLabel})
 }
 
 // DLLCall calls a function in a DLL file.
 func (a *Assembler) DLLCall(name string) {
-	a.Label(DLLCALL, name)
+	a.Label(DLLCALL, Label{Name: name, Type: ExternLabel})
 }
 
 // Return returns back to the caller.

src/asm/Label.go

@@ -3,6 +3,7 @@ package asm
 // Label represents a jump label.
 type Label struct {
 	Name string
+	Type LabelType
 }
 
 // String returns a human readable version.
@@ -11,14 +12,12 @@ func (data *Label) String() string {
 }
 
 // Label adds an instruction using a label.
-func (a *Assembler) Label(mnemonic Mnemonic, name string) {
+func (a *Assembler) Label(mnemonic Mnemonic, label Label) {
 	a.Instructions = append(a.Instructions, Instruction{
 		Mnemonic: mnemonic,
 		Type:     TypeLabel,
 		Index:    Index(len(a.Param.Label)),
 	})
 
-	a.Param.Label = append(a.Param.Label, Label{
-		Name: name,
-	})
+	a.Param.Label = append(a.Param.Label, label)
 }

src/asm/LabelType.go

@@ -0,0 +1,13 @@
+package asm
+
+// LabelType shows what the label was used for.
+type LabelType uint8
+
+const (
+	UnknownLabel LabelType = iota
+	CommentLabel
+	ControlLabel
+	DataLabel
+	FunctionLabel
+	ExternLabel
+)

src/asm/MemoryLabel.go

@@ -2,17 +2,17 @@ package asm
 
 // MemoryLabel operates with a memory address and a number.
 type MemoryLabel struct {
-	Label   string
+	Label   Label
 	Address Memory
 }
 
 // String returns a human readable version.
 func (data *MemoryLabel) String() string {
-	return data.Address.Format(data.Label)
+	return data.Address.Format(data.Label.Name)
 }
 
 // MemoryLabel adds an instruction with a memory address and a label.
-func (a *Assembler) MemoryLabel(mnemonic Mnemonic, address Memory, label string) {
+func (a *Assembler) MemoryLabel(mnemonic Mnemonic, address Memory, label Label) {
 	a.Instructions = append(a.Instructions, Instruction{
 		Mnemonic: mnemonic,
 		Type:     TypeMemoryLabel,

src/asm/RegisterLabel.go

@@ -8,17 +8,17 @@ import (
 
 // RegisterLabel operates with a register and a label.
 type RegisterLabel struct {
-	Label    string
+	Label    Label
 	Register cpu.Register
 }
 
 // String returns a human readable version.
 func (data *RegisterLabel) String() string {
-	return fmt.Sprintf("%s, %s", data.Register, data.Label)
+	return fmt.Sprintf("%s, %s", data.Register, data.Label.Name)
 }
 
 // RegisterLabel adds an instruction with a register and a label.
-func (a *Assembler) RegisterLabel(mnemonic Mnemonic, register cpu.Register, label string) {
+func (a *Assembler) RegisterLabel(mnemonic Mnemonic, register cpu.Register, label Label) {
 	a.Instructions = append(a.Instructions, Instruction{
 		Mnemonic: mnemonic,
 		Type:     TypeRegisterLabel,