Added single line comments

examples/hello/hello.q

@@ -1,3 +1,4 @@
+// Comment
 main() {
 	address := 4194304 + 1
 	length := (0 + 50 - 20) * 10 / 100
@@ -7,10 +8,12 @@ main() {
 	}
 }
 
+// Comment
 print(address, length) {
 	write(length-2, address, length)
 }
 
+// Comment
 write(fd, address, length) {
 	syscall(1, fd, address, length)
 }

src/build/token/Token_test.go

@@ -209,6 +209,93 @@ func TestSeparator(t *testing.T) {
 	})
 }
 
+func TestComment(t *testing.T) {
+	tokens := token.Tokenize([]byte("// Hello\n// World"))
+	assert.DeepEqual(t, tokens, token.List{
+		{
+			Kind:     token.Comment,
+			Bytes:    []byte(`// Hello`),
+			Position: 0,
+		},
+		{
+			Kind:     token.NewLine,
+			Bytes:    []byte("\n"),
+			Position: 8,
+		},
+		{
+			Kind:     token.Comment,
+			Bytes:    []byte(`// World`),
+			Position: 9,
+		},
+		{
+			Kind:     token.EOF,
+			Bytes:    nil,
+			Position: 17,
+		},
+	})
+
+	tokens = token.Tokenize([]byte("// Hello\n"))
+	assert.DeepEqual(t, tokens, token.List{
+		{
+			Kind:     token.Comment,
+			Bytes:    []byte(`// Hello`),
+			Position: 0,
+		},
+		{
+			Kind:     token.NewLine,
+			Bytes:    []byte("\n"),
+			Position: 8,
+		},
+		{
+			Kind:     token.EOF,
+			Bytes:    nil,
+			Position: 9,
+		},
+	})
+
+	tokens = token.Tokenize([]byte(`// Hello`))
+	assert.DeepEqual(t, tokens, token.List{
+		{
+			Kind:     token.Comment,
+			Bytes:    []byte(`// Hello`),
+			Position: 0,
+		},
+		{
+			Kind:     token.EOF,
+			Bytes:    nil,
+			Position: 8,
+		},
+	})
+
+	tokens = token.Tokenize([]byte(`//`))
+	assert.DeepEqual(t, tokens, token.List{
+		{
+			Kind:     token.Comment,
+			Bytes:    []byte(`//`),
+			Position: 0,
+		},
+		{
+			Kind:     token.EOF,
+			Bytes:    nil,
+			Position: 2,
+		},
+	})
+
+	tokens = token.Tokenize([]byte(`/`))
+	assert.DeepEqual(t, tokens, token.List{
+		{
+			Kind:     token.Operator,
+			Bytes:    []byte(`/`),
+			Position: 0,
+		},
+		{
+			Kind:     token.EOF,
+			Bytes:    nil,
+			Position: 1,
+		},
+	})
+}
+
 func TestString(t *testing.T) {
 	tokens := token.Tokenize([]byte(`"Hello" "World"`))
 	assert.DeepEqual(t, tokens, token.List{

src/build/token/Tokenize.go

@@ -75,6 +75,20 @@ func Tokenize(buffer []byte) List {
 		case '\n':
 			tokens = append(tokens, Token{NewLine, i, newLineBytes})
 
+		// Comment
+		case '/':
+			if i+1 >= len(buffer) || buffer[i+1] != '/' {
+				tokens = append(tokens, Token{Operator, i, buffer[i : i+1]})
+				i++
+				continue
+			}
+
+			for i < len(buffer) && buffer[i] != '\n' {
+				i++
+			}
+
+			continue
+
 		default:
 			// Identifiers
 			if isIdentifierStart(buffer[i]) {