[#82] array item unpack

printer/printer.go

@@ -1304,6 +1304,10 @@ func (p *Printer) printExprArrayItem(n node.Node) {
 	nn := n.(*expr.ArrayItem)
 	p.printFreeFloating(nn, freefloating.Start)
 
+	if nn.Unpack {
+		io.WriteString(p.w, "...")
+	}
+
 	if nn.Key != nil {
 		p.Print(nn.Key)
 		p.printFreeFloating(nn, freefloating.Expr)

printer/printer_parsed_php7_test.go

@@ -384,6 +384,7 @@ func TestParseAndPrintArrayItem(t *testing.T) {
 		$world ,
 		& $world ,
 		'Hello' => $world ,
+		... $unpack
 	] ;
 	`
 

printer/printer_test.go

@@ -1551,6 +1551,25 @@ func TestPrinterPrintExprArrayItem(t *testing.T) {
 	}
 }
 
+func TestPrinterPrintExprArrayItemUnpack(t *testing.T) {
+	o := bytes.NewBufferString("")
+
+	p := printer.NewPrinter(o)
+	p.Print(&expr.ArrayItem{
+		Unpack: true,
+		Val: &expr.Variable{
+			VarName: &node.Identifier{Value: "world"},
+		},
+	})
+
+	expected := `...$world`
+	actual := o.String()
+
+	if expected != actual {
+		t.Errorf("\nexpected: %s\ngot: %s\n", expected, actual)
+	}
+}
+
 func TestPrinterPrintExprArray(t *testing.T) {
 	o := bytes.NewBufferString("")