diff --git a/internal/php5/php5.go b/internal/php5/php5.go
index 5cc2459..8aa85e6 100644
--- a/internal/php5/php5.go
+++ b/internal/php5/php5.go
@@ -343,7 +343,7 @@ const yyEofCode = 1
 const yyErrCode = 2
 const yyInitialStackSize = 16
 
-// line internal/php5/php5.y:6598
+// line internal/php5/php5.y:6604
 
 type simpleIndirectReference struct {
 	all  []*ast.ExprVariable
@@ -3779,13 +3779,13 @@ yydefault:
 		yyDollar = yyS[yypt-2 : yypt+1]
 // line internal/php5/php5.y:1611
 		{
-			yyVAL.node = &ast.ExprReference{ast.Node{}, yyDollar[2].node}
-
-			// save position
-			yyVAL.node.GetNode().Position = position.NewTokenNodePosition(yyDollar[1].token, yyDollar[2].node)
-
-			// save comments
-			yylex.(*Parser).setFreeFloating(yyVAL.node, token.Start, yyDollar[1].token.SkippedTokens)
+			yyVAL.node = &ast.ExprReference{
+				Node: ast.Node{
+					Position: position.NewTokenNodePosition(yyDollar[1].token, yyDollar[2].node),
+				},
+				AmpersandTkn: yyDollar[1].token,
+				Var:          yyDollar[2].node,
+			}
 		}
 	case 113:
 		yyDollar = yyS[yypt-4 : yypt+1]
@@ -6317,13 +6317,13 @@ yydefault:
 		yyDollar = yyS[yypt-2 : yypt+1]
 // line internal/php5/php5.y:3945
 		{
-			yyVAL.node = &ast.ExprPrint{ast.Node{}, yyDollar[2].node}
-
-			// save position
-			yyVAL.node.GetNode().Position = position.NewTokenNodePosition(yyDollar[1].token, yyDollar[2].node)
-
-			// save comments
-			yylex.(*Parser).setFreeFloating(yyVAL.node, token.Start, yyDollar[1].token.SkippedTokens)
+			yyVAL.node = &ast.ExprPrint{
+				Node: ast.Node{
+					Position: position.NewTokenNodePosition(yyDollar[1].token, yyDollar[2].node),
+				},
+				PrintTkn: yyDollar[1].token,
+				Expr:     yyDollar[2].node,
+			}
 		}
 	case 303:
 		yyDollar = yyS[yypt-1 : yypt+1]
@@ -6574,6 +6574,7 @@ yydefault:
 				Node: ast.Node{
 					Position: position.NewTokensPosition(yyDollar[3].token, yyDollar[4].token),
 				},
+				AmpersandTkn: yyDollar[3].token,
 				Var: &ast.ExprVariable{
 					Node: ast.Node{
 						Position: position.NewTokenPosition(yyDollar[4].token),
@@ -6595,7 +6596,7 @@ yydefault:
 		}
 	case 321:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:4205
+// line internal/php5/php5.y:4206
 		{
 			yyVAL.node = &ast.ParserSeparatedList{
 				Items: []ast.Vertex{
@@ -6616,7 +6617,7 @@ yydefault:
 		}
 	case 322:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php5/php5.y:4224
+// line internal/php5/php5.y:4225
 		{
 			yyVAL.node = &ast.ParserSeparatedList{
 				Items: []ast.Vertex{
@@ -6624,6 +6625,7 @@ yydefault:
 						Node: ast.Node{
 							Position: position.NewTokensPosition(yyDollar[1].token, yyDollar[2].token),
 						},
+						AmpersandTkn: yyDollar[1].token,
 						Var: &ast.ExprVariable{
 							Node: ast.Node{
 								Position: position.NewTokenPosition(yyDollar[2].token),
@@ -6642,7 +6644,7 @@ yydefault:
 		}
 	case 323:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php5/php5.y:4251
+// line internal/php5/php5.y:4253
 		{
 			yyVAL.node = &ast.ExprFunctionCall{
 				Node: ast.Node{
@@ -6661,7 +6663,7 @@ yydefault:
 		}
 	case 324:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php5/php5.y:4268
+// line internal/php5/php5.y:4270
 		{
 			yyVAL.node = &ast.ExprFunctionCall{
 				Node: ast.Node{
@@ -6682,7 +6684,7 @@ yydefault:
 		}
 	case 325:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:4287
+// line internal/php5/php5.y:4289
 		{
 			yyVAL.node = &ast.ExprFunctionCall{
 				Node: ast.Node{
@@ -6702,7 +6704,7 @@ yydefault:
 		}
 	case 326:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php5/php5.y:4305
+// line internal/php5/php5.y:4307
 		{
 			yyVAL.node = &ast.ExprStaticCall{ast.Node{}, yyDollar[1].node, yyDollar[3].node, yyDollar[4].node.(*ast.ArgumentList)}
 
@@ -6715,7 +6717,7 @@ yydefault:
 		}
 	case 327:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php5/php5.y:4316
+// line internal/php5/php5.y:4318
 		{
 			yyVAL.node = &ast.ExprStaticCall{ast.Node{}, yyDollar[1].node, yyDollar[3].node, yyDollar[4].node.(*ast.ArgumentList)}
 
@@ -6728,7 +6730,7 @@ yydefault:
 		}
 	case 328:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php5/php5.y:4327
+// line internal/php5/php5.y:4329
 		{
 			yyVAL.node = &ast.ExprStaticCall{ast.Node{}, yyDollar[1].node, yyDollar[3].node, yyDollar[4].node.(*ast.ArgumentList)}
 
@@ -6741,7 +6743,7 @@ yydefault:
 		}
 	case 329:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php5/php5.y:4338
+// line internal/php5/php5.y:4340
 		{
 			yyVAL.node = &ast.ExprStaticCall{ast.Node{}, yyDollar[1].node, yyDollar[3].node, yyDollar[4].node.(*ast.ArgumentList)}
 
@@ -6754,7 +6756,7 @@ yydefault:
 		}
 	case 330:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php5/php5.y:4349
+// line internal/php5/php5.y:4351
 		{
 			yyVAL.node = &ast.ExprFunctionCall{
 				Node: ast.Node{
@@ -6768,7 +6770,7 @@ yydefault:
 		}
 	case 331:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:4364
+// line internal/php5/php5.y:4366
 		{
 			yyVAL.node = &ast.Identifier{
 				Node: ast.Node{
@@ -6780,7 +6782,7 @@ yydefault:
 		}
 	case 332:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:4374
+// line internal/php5/php5.y:4376
 		{
 			yyVAL.node = &ast.NameName{
 				Node: ast.Node{
@@ -6791,7 +6793,7 @@ yydefault:
 		}
 	case 333:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:4383
+// line internal/php5/php5.y:4385
 		{
 			yyVAL.node = &ast.NameRelative{
 				Node: ast.Node{
@@ -6804,7 +6806,7 @@ yydefault:
 		}
 	case 334:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php5/php5.y:4394
+// line internal/php5/php5.y:4396
 		{
 			yyVAL.node = &ast.NameFullyQualified{
 				Node: ast.Node{
@@ -6816,7 +6818,7 @@ yydefault:
 		}
 	case 335:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:4407
+// line internal/php5/php5.y:4409
 		{
 			yyVAL.node = &ast.NameName{
 				Node: ast.Node{
@@ -6827,7 +6829,7 @@ yydefault:
 		}
 	case 336:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:4416
+// line internal/php5/php5.y:4418
 		{
 			yyVAL.node = &ast.NameRelative{
 				Node: ast.Node{
@@ -6840,7 +6842,7 @@ yydefault:
 		}
 	case 337:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php5/php5.y:4427
+// line internal/php5/php5.y:4429
 		{
 			yyVAL.node = &ast.NameFullyQualified{
 				Node: ast.Node{
@@ -6852,19 +6854,19 @@ yydefault:
 		}
 	case 338:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:4440
+// line internal/php5/php5.y:4442
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 339:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:4444
+// line internal/php5/php5.y:4446
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 340:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php5/php5.y:4451
+// line internal/php5/php5.y:4453
 		{
 			yyVAL.node = yyDollar[1].node
 
@@ -6905,25 +6907,25 @@ yydefault:
 		}
 	case 341:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:4490
+// line internal/php5/php5.y:4492
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 342:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php5/php5.y:4498
+// line internal/php5/php5.y:4500
 		{
 			yyVAL.list = append(yyDollar[1].list, yyDollar[2].list...)
 		}
 	case 343:
 		yyDollar = yyS[yypt-0 : yypt+1]
-// line internal/php5/php5.y:4502
+// line internal/php5/php5.y:4504
 		{
 			yyVAL.list = []ast.Vertex{}
 		}
 	case 344:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php5/php5.y:4510
+// line internal/php5/php5.y:4512
 		{
 			yyVAL.list = yyDollar[2].list
 
@@ -6932,13 +6934,13 @@ yydefault:
 		}
 	case 345:
 		yyDollar = yyS[yypt-0 : yypt+1]
-// line internal/php5/php5.y:4520
+// line internal/php5/php5.y:4522
 		{
 			yyVAL.node = nil
 		}
 	case 346:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php5/php5.y:4524
+// line internal/php5/php5.y:4526
 		{
 			yyVAL.node = &ast.ParserBrackets{
 				Node: ast.Node{
@@ -6954,19 +6956,19 @@ yydefault:
 		}
 	case 347:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:4538
+// line internal/php5/php5.y:4540
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 348:
 		yyDollar = yyS[yypt-0 : yypt+1]
-// line internal/php5/php5.y:4545
+// line internal/php5/php5.y:4547
 		{
 			yyVAL.list = []ast.Vertex{}
 		}
 	case 349:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:4549
+// line internal/php5/php5.y:4551
 		{
 			yyVAL.list = []ast.Vertex{
 				&ast.ScalarEncapsedStringPart{
@@ -6980,25 +6982,25 @@ yydefault:
 		}
 	case 350:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:4561
+// line internal/php5/php5.y:4563
 		{
 			yyVAL.list = yyDollar[1].list
 		}
 	case 351:
 		yyDollar = yyS[yypt-0 : yypt+1]
-// line internal/php5/php5.y:4568
+// line internal/php5/php5.y:4570
 		{
 			yyVAL.node = nil
 		}
 	case 352:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:4572
+// line internal/php5/php5.y:4574
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 353:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:4579
+// line internal/php5/php5.y:4581
 		{
 			yyVAL.node = &ast.ScalarLnumber{
 				Node: ast.Node{
@@ -7010,7 +7012,7 @@ yydefault:
 		}
 	case 354:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:4589
+// line internal/php5/php5.y:4591
 		{
 			yyVAL.node = &ast.ScalarDnumber{
 				Node: ast.Node{
@@ -7022,7 +7024,7 @@ yydefault:
 		}
 	case 355:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:4599
+// line internal/php5/php5.y:4601
 		{
 			yyVAL.node = &ast.ScalarString{
 				Node: ast.Node{
@@ -7034,7 +7036,7 @@ yydefault:
 		}
 	case 356:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:4609
+// line internal/php5/php5.y:4611
 		{
 			yyVAL.node = &ast.ScalarMagicConstant{
 				Node: ast.Node{
@@ -7046,7 +7048,7 @@ yydefault:
 		}
 	case 357:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:4619
+// line internal/php5/php5.y:4621
 		{
 			yyVAL.node = &ast.ScalarMagicConstant{
 				Node: ast.Node{
@@ -7058,7 +7060,7 @@ yydefault:
 		}
 	case 358:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:4629
+// line internal/php5/php5.y:4631
 		{
 			yyVAL.node = &ast.ScalarMagicConstant{
 				Node: ast.Node{
@@ -7070,7 +7072,7 @@ yydefault:
 		}
 	case 359:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:4639
+// line internal/php5/php5.y:4641
 		{
 			yyVAL.node = &ast.ScalarMagicConstant{
 				Node: ast.Node{
@@ -7082,7 +7084,7 @@ yydefault:
 		}
 	case 360:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:4649
+// line internal/php5/php5.y:4651
 		{
 			yyVAL.node = &ast.ScalarMagicConstant{
 				Node: ast.Node{
@@ -7094,7 +7096,7 @@ yydefault:
 		}
 	case 361:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:4659
+// line internal/php5/php5.y:4661
 		{
 			yyVAL.node = &ast.ScalarMagicConstant{
 				Node: ast.Node{
@@ -7106,7 +7108,7 @@ yydefault:
 		}
 	case 362:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:4669
+// line internal/php5/php5.y:4671
 		{
 			yyVAL.node = &ast.ScalarMagicConstant{
 				Node: ast.Node{
@@ -7118,7 +7120,7 @@ yydefault:
 		}
 	case 363:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:4679
+// line internal/php5/php5.y:4681
 		{
 			yyVAL.node = &ast.ScalarHeredoc{
 				Node: ast.Node{
@@ -7139,7 +7141,7 @@ yydefault:
 		}
 	case 364:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php5/php5.y:4698
+// line internal/php5/php5.y:4700
 		{
 			yyVAL.node = &ast.ScalarHeredoc{
 				Node: ast.Node{
@@ -7151,7 +7153,7 @@ yydefault:
 		}
 	case 365:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:4711
+// line internal/php5/php5.y:4713
 		{
 			yyVAL.node = &ast.ExprClassConstFetch{
 				Node: ast.Node{
@@ -7170,25 +7172,25 @@ yydefault:
 		}
 	case 366:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:4731
+// line internal/php5/php5.y:4733
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 367:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:4738
+// line internal/php5/php5.y:4740
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 368:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:4742
+// line internal/php5/php5.y:4744
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 369:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:4746
+// line internal/php5/php5.y:4748
 		{
 			yyVAL.node = &ast.ExprConstFetch{
 				Node: ast.Node{
@@ -7204,7 +7206,7 @@ yydefault:
 		}
 	case 370:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:4760
+// line internal/php5/php5.y:4762
 		{
 			yyVAL.node = &ast.ExprConstFetch{
 				Node: ast.Node{
@@ -7222,7 +7224,7 @@ yydefault:
 		}
 	case 371:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php5/php5.y:4776
+// line internal/php5/php5.y:4778
 		{
 			yyVAL.node = &ast.ExprConstFetch{
 				Node: ast.Node{
@@ -7239,7 +7241,7 @@ yydefault:
 		}
 	case 372:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php5/php5.y:4791
+// line internal/php5/php5.y:4793
 		{
 			yyVAL.node = &ast.ExprArray{
 				Node: ast.Node{
@@ -7254,7 +7256,7 @@ yydefault:
 		}
 	case 373:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:4804
+// line internal/php5/php5.y:4806
 		{
 			yyVAL.node = &ast.ExprArray{
 				Node: ast.Node{
@@ -7268,13 +7270,13 @@ yydefault:
 		}
 	case 374:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:4816
+// line internal/php5/php5.y:4818
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 375:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:4820
+// line internal/php5/php5.y:4822
 		{
 			yyVAL.node = &ast.ScalarMagicConstant{
 				Node: ast.Node{
@@ -7286,13 +7288,13 @@ yydefault:
 		}
 	case 376:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:4830
+// line internal/php5/php5.y:4832
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 377:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php5/php5.y:4837
+// line internal/php5/php5.y:4839
 		{
 			yyVAL.node = &ast.ExprArrayDimFetch{
 				Node: ast.Node{
@@ -7306,7 +7308,7 @@ yydefault:
 		}
 	case 378:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:4849
+// line internal/php5/php5.y:4851
 		{
 			yyVAL.node = &ast.ExprBinaryPlus{ast.Node{}, yyDollar[1].node, yyDollar[3].node}
 
@@ -7319,7 +7321,7 @@ yydefault:
 		}
 	case 379:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:4860
+// line internal/php5/php5.y:4862
 		{
 			yyVAL.node = &ast.ExprBinaryMinus{ast.Node{}, yyDollar[1].node, yyDollar[3].node}
 
@@ -7332,7 +7334,7 @@ yydefault:
 		}
 	case 380:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:4871
+// line internal/php5/php5.y:4873
 		{
 			yyVAL.node = &ast.ExprBinaryMul{ast.Node{}, yyDollar[1].node, yyDollar[3].node}
 
@@ -7345,7 +7347,7 @@ yydefault:
 		}
 	case 381:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:4882
+// line internal/php5/php5.y:4884
 		{
 			yyVAL.node = &ast.ExprBinaryPow{ast.Node{}, yyDollar[1].node, yyDollar[3].node}
 
@@ -7358,7 +7360,7 @@ yydefault:
 		}
 	case 382:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:4893
+// line internal/php5/php5.y:4895
 		{
 			yyVAL.node = &ast.ExprBinaryDiv{ast.Node{}, yyDollar[1].node, yyDollar[3].node}
 
@@ -7371,7 +7373,7 @@ yydefault:
 		}
 	case 383:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:4904
+// line internal/php5/php5.y:4906
 		{
 			yyVAL.node = &ast.ExprBinaryMod{ast.Node{}, yyDollar[1].node, yyDollar[3].node}
 
@@ -7384,7 +7386,7 @@ yydefault:
 		}
 	case 384:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php5/php5.y:4915
+// line internal/php5/php5.y:4917
 		{
 			yyVAL.node = &ast.ExprBooleanNot{
 				Node: ast.Node{
@@ -7396,7 +7398,7 @@ yydefault:
 		}
 	case 385:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php5/php5.y:4925
+// line internal/php5/php5.y:4927
 		{
 			yyVAL.node = &ast.ExprBitwiseNot{
 				Node: ast.Node{
@@ -7408,7 +7410,7 @@ yydefault:
 		}
 	case 386:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:4935
+// line internal/php5/php5.y:4937
 		{
 			yyVAL.node = &ast.ExprBinaryBitwiseOr{ast.Node{}, yyDollar[1].node, yyDollar[3].node}
 
@@ -7421,7 +7423,7 @@ yydefault:
 		}
 	case 387:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:4946
+// line internal/php5/php5.y:4948
 		{
 			yyVAL.node = &ast.ExprBinaryBitwiseAnd{ast.Node{}, yyDollar[1].node, yyDollar[3].node}
 
@@ -7434,7 +7436,7 @@ yydefault:
 		}
 	case 388:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:4957
+// line internal/php5/php5.y:4959
 		{
 			yyVAL.node = &ast.ExprBinaryBitwiseXor{ast.Node{}, yyDollar[1].node, yyDollar[3].node}
 
@@ -7447,7 +7449,7 @@ yydefault:
 		}
 	case 389:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:4968
+// line internal/php5/php5.y:4970
 		{
 			yyVAL.node = &ast.ExprBinaryShiftLeft{ast.Node{}, yyDollar[1].node, yyDollar[3].node}
 
@@ -7460,7 +7462,7 @@ yydefault:
 		}
 	case 390:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:4979
+// line internal/php5/php5.y:4981
 		{
 			yyVAL.node = &ast.ExprBinaryShiftRight{ast.Node{}, yyDollar[1].node, yyDollar[3].node}
 
@@ -7473,7 +7475,7 @@ yydefault:
 		}
 	case 391:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:4990
+// line internal/php5/php5.y:4992
 		{
 			yyVAL.node = &ast.ExprBinaryConcat{ast.Node{}, yyDollar[1].node, yyDollar[3].node}
 
@@ -7486,7 +7488,7 @@ yydefault:
 		}
 	case 392:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:5001
+// line internal/php5/php5.y:5003
 		{
 			yyVAL.node = &ast.ExprBinaryLogicalXor{ast.Node{}, yyDollar[1].node, yyDollar[3].node}
 
@@ -7499,7 +7501,7 @@ yydefault:
 		}
 	case 393:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:5012
+// line internal/php5/php5.y:5014
 		{
 			yyVAL.node = &ast.ExprBinaryLogicalAnd{ast.Node{}, yyDollar[1].node, yyDollar[3].node}
 
@@ -7512,7 +7514,7 @@ yydefault:
 		}
 	case 394:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:5023
+// line internal/php5/php5.y:5025
 		{
 			yyVAL.node = &ast.ExprBinaryLogicalOr{ast.Node{}, yyDollar[1].node, yyDollar[3].node}
 
@@ -7525,7 +7527,7 @@ yydefault:
 		}
 	case 395:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:5034
+// line internal/php5/php5.y:5036
 		{
 			yyVAL.node = &ast.ExprBinaryBooleanAnd{ast.Node{}, yyDollar[1].node, yyDollar[3].node}
 
@@ -7538,7 +7540,7 @@ yydefault:
 		}
 	case 396:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:5045
+// line internal/php5/php5.y:5047
 		{
 			yyVAL.node = &ast.ExprBinaryBooleanOr{ast.Node{}, yyDollar[1].node, yyDollar[3].node}
 
@@ -7551,7 +7553,7 @@ yydefault:
 		}
 	case 397:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:5056
+// line internal/php5/php5.y:5058
 		{
 			yyVAL.node = &ast.ExprBinaryIdentical{ast.Node{}, yyDollar[1].node, yyDollar[3].node}
 
@@ -7564,7 +7566,7 @@ yydefault:
 		}
 	case 398:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:5067
+// line internal/php5/php5.y:5069
 		{
 			yyVAL.node = &ast.ExprBinaryNotIdentical{ast.Node{}, yyDollar[1].node, yyDollar[3].node}
 
@@ -7577,7 +7579,7 @@ yydefault:
 		}
 	case 399:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:5078
+// line internal/php5/php5.y:5080
 		{
 			yyVAL.node = &ast.ExprBinaryEqual{ast.Node{}, yyDollar[1].node, yyDollar[3].node}
 
@@ -7590,7 +7592,7 @@ yydefault:
 		}
 	case 400:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:5089
+// line internal/php5/php5.y:5091
 		{
 			yyVAL.node = &ast.ExprBinaryNotEqual{ast.Node{}, yyDollar[1].node, yyDollar[3].node}
 
@@ -7604,7 +7606,7 @@ yydefault:
 		}
 	case 401:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:5101
+// line internal/php5/php5.y:5103
 		{
 			yyVAL.node = &ast.ExprBinarySmaller{ast.Node{}, yyDollar[1].node, yyDollar[3].node}
 
@@ -7617,7 +7619,7 @@ yydefault:
 		}
 	case 402:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:5112
+// line internal/php5/php5.y:5114
 		{
 			yyVAL.node = &ast.ExprBinaryGreater{ast.Node{}, yyDollar[1].node, yyDollar[3].node}
 
@@ -7630,7 +7632,7 @@ yydefault:
 		}
 	case 403:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:5123
+// line internal/php5/php5.y:5125
 		{
 			yyVAL.node = &ast.ExprBinarySmallerOrEqual{ast.Node{}, yyDollar[1].node, yyDollar[3].node}
 
@@ -7643,7 +7645,7 @@ yydefault:
 		}
 	case 404:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:5134
+// line internal/php5/php5.y:5136
 		{
 			yyVAL.node = &ast.ExprBinaryGreaterOrEqual{ast.Node{}, yyDollar[1].node, yyDollar[3].node}
 
@@ -7656,7 +7658,7 @@ yydefault:
 		}
 	case 405:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php5/php5.y:5145
+// line internal/php5/php5.y:5147
 		{
 			yyVAL.node = &ast.ExprTernary{ast.Node{}, yyDollar[1].node, nil, yyDollar[4].node}
 
@@ -7670,7 +7672,7 @@ yydefault:
 		}
 	case 406:
 		yyDollar = yyS[yypt-5 : yypt+1]
-// line internal/php5/php5.y:5157
+// line internal/php5/php5.y:5159
 		{
 			yyVAL.node = &ast.ExprTernary{ast.Node{}, yyDollar[1].node, yyDollar[3].node, yyDollar[5].node}
 
@@ -7684,7 +7686,7 @@ yydefault:
 		}
 	case 407:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php5/php5.y:5169
+// line internal/php5/php5.y:5171
 		{
 			yyVAL.node = &ast.ExprUnaryPlus{ast.Node{}, yyDollar[2].node}
 
@@ -7696,7 +7698,7 @@ yydefault:
 		}
 	case 408:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php5/php5.y:5179
+// line internal/php5/php5.y:5181
 		{
 			yyVAL.node = &ast.ExprUnaryMinus{ast.Node{}, yyDollar[2].node}
 
@@ -7708,7 +7710,7 @@ yydefault:
 		}
 	case 409:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:5189
+// line internal/php5/php5.y:5191
 		{
 			yyVAL.node = yyDollar[2].node
 
@@ -7718,13 +7720,13 @@ yydefault:
 		}
 	case 410:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:5200
+// line internal/php5/php5.y:5202
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 411:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:5204
+// line internal/php5/php5.y:5206
 		{
 			yyVAL.node = &ast.ExprConstFetch{
 				Node: ast.Node{
@@ -7740,7 +7742,7 @@ yydefault:
 		}
 	case 412:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:5218
+// line internal/php5/php5.y:5220
 		{
 			yyVAL.node = &ast.ExprConstFetch{
 				Node: ast.Node{
@@ -7758,7 +7760,7 @@ yydefault:
 		}
 	case 413:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php5/php5.y:5234
+// line internal/php5/php5.y:5236
 		{
 			yyVAL.node = &ast.ExprConstFetch{
 				Node: ast.Node{
@@ -7775,7 +7777,7 @@ yydefault:
 		}
 	case 414:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:5252
+// line internal/php5/php5.y:5254
 		{
 			name := &ast.Identifier{
 				Node: ast.Node{
@@ -7794,25 +7796,25 @@ yydefault:
 		}
 	case 415:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:5269
+// line internal/php5/php5.y:5271
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 416:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:5273
+// line internal/php5/php5.y:5275
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 417:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:5277
+// line internal/php5/php5.y:5279
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 418:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:5281
+// line internal/php5/php5.y:5283
 		{
 			yyVAL.node = &ast.ScalarEncapsed{
 				Node: ast.Node{
@@ -7825,7 +7827,7 @@ yydefault:
 		}
 	case 419:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:5292
+// line internal/php5/php5.y:5294
 		{
 			yyVAL.node = &ast.ScalarHeredoc{
 				Node: ast.Node{
@@ -7838,7 +7840,7 @@ yydefault:
 		}
 	case 420:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:5303
+// line internal/php5/php5.y:5305
 		{
 			yyVAL.node = &ast.ScalarMagicConstant{
 				Node: ast.Node{
@@ -7850,13 +7852,13 @@ yydefault:
 		}
 	case 421:
 		yyDollar = yyS[yypt-0 : yypt+1]
-// line internal/php5/php5.y:5316
+// line internal/php5/php5.y:5318
 		{
 			yyVAL.node = &ast.ParserSeparatedList{}
 		}
 	case 422:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php5/php5.y:5320
+// line internal/php5/php5.y:5322
 		{
 			if yyDollar[2].token != nil {
 				yyDollar[1].node.(*ast.ParserSeparatedList).SeparatorTkns = append(yyDollar[1].node.(*ast.ParserSeparatedList).SeparatorTkns, yyDollar[2].token)
@@ -7867,19 +7869,19 @@ yydefault:
 		}
 	case 423:
 		yyDollar = yyS[yypt-0 : yypt+1]
-// line internal/php5/php5.y:5332
+// line internal/php5/php5.y:5334
 		{
 			yyVAL.token = nil
 		}
 	case 424:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:5336
+// line internal/php5/php5.y:5338
 		{
 			yyVAL.token = yyDollar[1].token
 		}
 	case 425:
 		yyDollar = yyS[yypt-5 : yypt+1]
-// line internal/php5/php5.y:5343
+// line internal/php5/php5.y:5345
 		{
 			arrayItem := &ast.ExprArrayItem{
 				Node: ast.Node{
@@ -7897,7 +7899,7 @@ yydefault:
 		}
 	case 426:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:5359
+// line internal/php5/php5.y:5361
 		{
 			arrayItem := &ast.ExprArrayItem{
 				Node: ast.Node{
@@ -7913,7 +7915,7 @@ yydefault:
 		}
 	case 427:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:5373
+// line internal/php5/php5.y:5375
 		{
 			yyVAL.node = &ast.ParserSeparatedList{
 				Items: []ast.Vertex{
@@ -7930,7 +7932,7 @@ yydefault:
 		}
 	case 428:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:5388
+// line internal/php5/php5.y:5390
 		{
 			yyVAL.node = &ast.ParserSeparatedList{
 				Items: []ast.Vertex{
@@ -7945,19 +7947,19 @@ yydefault:
 		}
 	case 429:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:5404
+// line internal/php5/php5.y:5406
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 430:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:5408
+// line internal/php5/php5.y:5410
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 431:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:5415
+// line internal/php5/php5.y:5417
 		{
 			yyVAL.node = &ast.ParserBrackets{
 				Node: ast.Node{
@@ -7974,7 +7976,7 @@ yydefault:
 		}
 	case 432:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:5430
+// line internal/php5/php5.y:5432
 		{
 			yyVAL.node = &ast.ParserBrackets{
 				Node: ast.Node{
@@ -7991,25 +7993,25 @@ yydefault:
 		}
 	case 433:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:5449
+// line internal/php5/php5.y:5451
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 434:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:5457
+// line internal/php5/php5.y:5459
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 435:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:5464
+// line internal/php5/php5.y:5466
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 436:
 		yyDollar = yyS[yypt-5 : yypt+1]
-// line internal/php5/php5.y:5471
+// line internal/php5/php5.y:5473
 		{
 			yyVAL.node = yyDollar[1].node
 
@@ -8087,25 +8089,25 @@ yydefault:
 		}
 	case 437:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:5547
+// line internal/php5/php5.y:5549
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 438:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php5/php5.y:5554
+// line internal/php5/php5.y:5556
 		{
 			yyVAL.list = append(yyDollar[1].list, yyDollar[2].list...)
 		}
 	case 439:
 		yyDollar = yyS[yypt-0 : yypt+1]
-// line internal/php5/php5.y:5558
+// line internal/php5/php5.y:5560
 		{
 			yyVAL.list = []ast.Vertex{}
 		}
 	case 440:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:5566
+// line internal/php5/php5.y:5568
 		{
 			println("FOOFOOFOOFOOFOOFOOFOOFOOFOO")
 			yyDollar[2].list[0].(*ast.ExprPropertyFetch).ObjectOperatorTkn = yyDollar[1].token
@@ -8136,7 +8138,7 @@ yydefault:
 		}
 	case 441:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php5/php5.y:5597
+// line internal/php5/php5.y:5599
 		{
 			fetch := &ast.ExprArrayDimFetch{
 				Node: ast.Node{
@@ -8152,7 +8154,7 @@ yydefault:
 		}
 	case 442:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php5/php5.y:5611
+// line internal/php5/php5.y:5613
 		{
 			fetch := &ast.ExprArrayDimFetch{
 				Node: ast.Node{
@@ -8168,7 +8170,7 @@ yydefault:
 		}
 	case 443:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:5628
+// line internal/php5/php5.y:5630
 		{
 			yyVAL.node = &ast.ExprMethodCall{
 				Node: ast.Node{
@@ -8181,31 +8183,31 @@ yydefault:
 		}
 	case 444:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:5642
+// line internal/php5/php5.y:5644
 		{
 			yyVAL.list = []ast.Vertex{yyDollar[1].node}
 		}
 	case 445:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:5646
+// line internal/php5/php5.y:5648
 		{
 			yyVAL.list = yyDollar[1].list
 		}
 	case 446:
 		yyDollar = yyS[yypt-0 : yypt+1]
-// line internal/php5/php5.y:5650
+// line internal/php5/php5.y:5652
 		{
 			yyVAL.list = nil
 		}
 	case 447:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:5657
+// line internal/php5/php5.y:5659
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 448:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php5/php5.y:5661
+// line internal/php5/php5.y:5663
 		{
 			yyDollar[1].simpleIndirectReference.last.VarName = yyDollar[2].node
 
@@ -8217,7 +8219,7 @@ yydefault:
 		}
 	case 449:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:5674
+// line internal/php5/php5.y:5676
 		{
 			yyVAL.node = &ast.ExprStaticPropertyFetch{ast.Node{}, yyDollar[1].node, yyDollar[3].node}
 
@@ -8230,7 +8232,7 @@ yydefault:
 		}
 	case 450:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:5685
+// line internal/php5/php5.y:5687
 		{
 			yyVAL.node = &ast.ExprStaticPropertyFetch{ast.Node{}, yyDollar[1].node, yyDollar[3].node}
 
@@ -8243,13 +8245,13 @@ yydefault:
 		}
 	case 451:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:5699
+// line internal/php5/php5.y:5701
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 452:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php5/php5.y:5706
+// line internal/php5/php5.y:5708
 		{
 			yyVAL.node = &ast.ExprArrayDimFetch{
 				Node: ast.Node{
@@ -8263,7 +8265,7 @@ yydefault:
 		}
 	case 453:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php5/php5.y:5718
+// line internal/php5/php5.y:5720
 		{
 			yyVAL.node = &ast.ExprArrayDimFetch{
 				Node: ast.Node{
@@ -8277,31 +8279,31 @@ yydefault:
 		}
 	case 454:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:5733
+// line internal/php5/php5.y:5735
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 455:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:5737
+// line internal/php5/php5.y:5739
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 456:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:5741
+// line internal/php5/php5.y:5743
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 457:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:5749
+// line internal/php5/php5.y:5751
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 458:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php5/php5.y:5753
+// line internal/php5/php5.y:5755
 		{
 			yyDollar[1].simpleIndirectReference.last.VarName = yyDollar[2].node
 
@@ -8313,13 +8315,13 @@ yydefault:
 		}
 	case 459:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:5763
+// line internal/php5/php5.y:5765
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 460:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php5/php5.y:5770
+// line internal/php5/php5.y:5772
 		{
 			yyVAL.node = &ast.ExprArrayDimFetch{
 				Node: ast.Node{
@@ -8333,7 +8335,7 @@ yydefault:
 		}
 	case 461:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php5/php5.y:5782
+// line internal/php5/php5.y:5784
 		{
 			yyVAL.node = &ast.ExprArrayDimFetch{
 				Node: ast.Node{
@@ -8347,13 +8349,13 @@ yydefault:
 		}
 	case 462:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:5794
+// line internal/php5/php5.y:5796
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 463:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:5802
+// line internal/php5/php5.y:5804
 		{
 			name := &ast.Identifier{
 				Node: ast.Node{
@@ -8372,7 +8374,7 @@ yydefault:
 		}
 	case 464:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php5/php5.y:5819
+// line internal/php5/php5.y:5821
 		{
 			yyVAL.node = &ast.ExprVariable{ast.Node{}, yyDollar[3].node}
 
@@ -8386,25 +8388,25 @@ yydefault:
 		}
 	case 465:
 		yyDollar = yyS[yypt-0 : yypt+1]
-// line internal/php5/php5.y:5834
+// line internal/php5/php5.y:5836
 		{
 			yyVAL.node = nil
 		}
 	case 466:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:5838
+// line internal/php5/php5.y:5840
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 467:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:5846
+// line internal/php5/php5.y:5848
 		{
 			yyVAL.list = yyDollar[1].list
 		}
 	case 468:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:5850
+// line internal/php5/php5.y:5852
 		{
 			yyVAL.list = []ast.Vertex{
 				&ast.ExprPropertyFetch{
@@ -8417,7 +8419,7 @@ yydefault:
 		}
 	case 469:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php5/php5.y:5864
+// line internal/php5/php5.y:5866
 		{
 			fetch := &ast.ExprArrayDimFetch{
 				Node: ast.Node{
@@ -8433,7 +8435,7 @@ yydefault:
 		}
 	case 470:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php5/php5.y:5878
+// line internal/php5/php5.y:5880
 		{
 			fetch := &ast.ExprArrayDimFetch{
 				Node: ast.Node{
@@ -8449,7 +8451,7 @@ yydefault:
 		}
 	case 471:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:5892
+// line internal/php5/php5.y:5894
 		{
 			yyVAL.list = []ast.Vertex{
 				&ast.ExprPropertyFetch{
@@ -8462,7 +8464,7 @@ yydefault:
 		}
 	case 472:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:5906
+// line internal/php5/php5.y:5908
 		{
 			yyVAL.node = &ast.Identifier{
 				Node: ast.Node{
@@ -8474,7 +8476,7 @@ yydefault:
 		}
 	case 473:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:5916
+// line internal/php5/php5.y:5918
 		{
 			yyVAL.node = yyDollar[2].node
 
@@ -8487,7 +8489,7 @@ yydefault:
 		}
 	case 474:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:5930
+// line internal/php5/php5.y:5932
 		{
 			n := &ast.ExprVariable{ast.Node{}, nil}
 			yyVAL.simpleIndirectReference = simpleIndirectReference{[]*ast.ExprVariable{n}, n}
@@ -8500,7 +8502,7 @@ yydefault:
 		}
 	case 475:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php5/php5.y:5941
+// line internal/php5/php5.y:5943
 		{
 			n := &ast.ExprVariable{ast.Node{}, nil}
 
@@ -8517,7 +8519,7 @@ yydefault:
 		}
 	case 476:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:5959
+// line internal/php5/php5.y:5961
 		{
 			yyDollar[1].node.(*ast.ParserSeparatedList).SeparatorTkns = append(yyDollar[1].node.(*ast.ParserSeparatedList).SeparatorTkns, yyDollar[2].token)
 			yyDollar[1].node.(*ast.ParserSeparatedList).Items = append(yyDollar[1].node.(*ast.ParserSeparatedList).Items, yyDollar[3].node)
@@ -8526,7 +8528,7 @@ yydefault:
 		}
 	case 477:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:5966
+// line internal/php5/php5.y:5968
 		{
 			yyVAL.node = &ast.ParserSeparatedList{
 				Items: []ast.Vertex{yyDollar[1].node},
@@ -8534,7 +8536,7 @@ yydefault:
 		}
 	case 478:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:5976
+// line internal/php5/php5.y:5978
 		{
 			yyVAL.node = &ast.ExprArrayItem{
 				Node: ast.Node{
@@ -8545,7 +8547,7 @@ yydefault:
 		}
 	case 479:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php5/php5.y:5985
+// line internal/php5/php5.y:5987
 		{
 			pairList := yyDollar[3].node.(*ast.ParserSeparatedList)
 			fistPair := pairList.Items[0].(*ast.ExprArrayItem)
@@ -8572,19 +8574,19 @@ yydefault:
 		}
 	case 480:
 		yyDollar = yyS[yypt-0 : yypt+1]
-// line internal/php5/php5.y:6010
+// line internal/php5/php5.y:6012
 		{
 			yyVAL.node = &ast.ExprArrayItem{}
 		}
 	case 481:
 		yyDollar = yyS[yypt-0 : yypt+1]
-// line internal/php5/php5.y:6018
+// line internal/php5/php5.y:6020
 		{
 			yyVAL.node = &ast.ParserSeparatedList{}
 		}
 	case 482:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php5/php5.y:6022
+// line internal/php5/php5.y:6024
 		{
 			if yyDollar[2].token != nil {
 				yyDollar[1].node.(*ast.ParserSeparatedList).SeparatorTkns = append(yyDollar[1].node.(*ast.ParserSeparatedList).SeparatorTkns, yyDollar[2].token)
@@ -8595,7 +8597,7 @@ yydefault:
 		}
 	case 483:
 		yyDollar = yyS[yypt-5 : yypt+1]
-// line internal/php5/php5.y:6034
+// line internal/php5/php5.y:6036
 		{
 			arrayItem := &ast.ExprArrayItem{
 				Node: ast.Node{
@@ -8613,7 +8615,7 @@ yydefault:
 		}
 	case 484:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:6050
+// line internal/php5/php5.y:6052
 		{
 			arrayItem := &ast.ExprArrayItem{
 				Node: ast.Node{
@@ -8629,7 +8631,7 @@ yydefault:
 		}
 	case 485:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:6064
+// line internal/php5/php5.y:6066
 		{
 			yyVAL.node = &ast.ParserSeparatedList{
 				Items: []ast.Vertex{
@@ -8646,7 +8648,7 @@ yydefault:
 		}
 	case 486:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:6079
+// line internal/php5/php5.y:6081
 		{
 			yyVAL.node = &ast.ParserSeparatedList{
 				Items: []ast.Vertex{
@@ -8661,7 +8663,7 @@ yydefault:
 		}
 	case 487:
 		yyDollar = yyS[yypt-6 : yypt+1]
-// line internal/php5/php5.y:6092
+// line internal/php5/php5.y:6094
 		{
 			arrayItem := &ast.ExprArrayItem{
 				Node: ast.Node{
@@ -8673,7 +8675,8 @@ yydefault:
 					Node: ast.Node{
 						Position: position.NewTokenNodePosition(yyDollar[5].token, yyDollar[6].node),
 					},
-					Var: yyDollar[6].node,
+					AmpersandTkn: yyDollar[5].token,
+					Var:          yyDollar[6].node,
 				},
 			}
 
@@ -8684,7 +8687,7 @@ yydefault:
 		}
 	case 488:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php5/php5.y:6113
+// line internal/php5/php5.y:6116
 		{
 			arrayItem := &ast.ExprArrayItem{
 				Node: ast.Node{
@@ -8694,7 +8697,8 @@ yydefault:
 					Node: ast.Node{
 						Position: position.NewTokenNodePosition(yyDollar[3].token, yyDollar[4].node),
 					},
-					Var: yyDollar[4].node,
+					AmpersandTkn: yyDollar[3].token,
+					Var:          yyDollar[4].node,
 				},
 			}
 
@@ -8705,7 +8709,7 @@ yydefault:
 		}
 	case 489:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php5/php5.y:6132
+// line internal/php5/php5.y:6136
 		{
 			yyVAL.node = &ast.ParserSeparatedList{
 				Items: []ast.Vertex{
@@ -8719,7 +8723,8 @@ yydefault:
 							Node: ast.Node{
 								Position: position.NewTokenNodePosition(yyDollar[3].token, yyDollar[4].node),
 							},
-							Var: yyDollar[4].node,
+							AmpersandTkn: yyDollar[3].token,
+							Var:          yyDollar[4].node,
 						},
 					},
 				},
@@ -8727,7 +8732,7 @@ yydefault:
 		}
 	case 490:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php5/php5.y:6152
+// line internal/php5/php5.y:6157
 		{
 			yyVAL.node = &ast.ParserSeparatedList{
 				Items: []ast.Vertex{
@@ -8739,7 +8744,8 @@ yydefault:
 							Node: ast.Node{
 								Position: position.NewTokenNodePosition(yyDollar[1].token, yyDollar[2].node),
 							},
-							Var: yyDollar[2].node,
+							AmpersandTkn: yyDollar[1].token,
+							Var:          yyDollar[2].node,
 						},
 					},
 				},
@@ -8747,13 +8753,13 @@ yydefault:
 		}
 	case 491:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php5/php5.y:6173
+// line internal/php5/php5.y:6179
 		{
 			yyVAL.list = append(yyDollar[1].list, yyDollar[2].node)
 		}
 	case 492:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php5/php5.y:6177
+// line internal/php5/php5.y:6183
 		{
 			yyVAL.list = append(
 				yyDollar[1].list,
@@ -8768,13 +8774,13 @@ yydefault:
 		}
 	case 493:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:6190
+// line internal/php5/php5.y:6196
 		{
 			yyVAL.list = []ast.Vertex{yyDollar[1].node}
 		}
 	case 494:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php5/php5.y:6194
+// line internal/php5/php5.y:6200
 		{
 			yyVAL.list = []ast.Vertex{
 				&ast.ScalarEncapsedStringPart{
@@ -8789,7 +8795,7 @@ yydefault:
 		}
 	case 495:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:6210
+// line internal/php5/php5.y:6216
 		{
 			name := &ast.Identifier{
 				Node: ast.Node{
@@ -8808,7 +8814,7 @@ yydefault:
 		}
 	case 496:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php5/php5.y:6227
+// line internal/php5/php5.y:6233
 		{
 			yyVAL.node = &ast.ExprArrayDimFetch{
 				Node: ast.Node{
@@ -8833,7 +8839,7 @@ yydefault:
 		}
 	case 497:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:6250
+// line internal/php5/php5.y:6256
 		{
 			yyVAL.node = &ast.ExprPropertyFetch{
 				Node: ast.Node{
@@ -8863,7 +8869,7 @@ yydefault:
 		}
 	case 498:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:6278
+// line internal/php5/php5.y:6284
 		{
 			variable := &ast.ExprVariable{ast.Node{}, yyDollar[2].node}
 
@@ -8878,7 +8884,7 @@ yydefault:
 		}
 	case 499:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:6291
+// line internal/php5/php5.y:6297
 		{
 			name := &ast.Identifier{
 				Node: ast.Node{
@@ -8900,7 +8906,7 @@ yydefault:
 		}
 	case 500:
 		yyDollar = yyS[yypt-6 : yypt+1]
-// line internal/php5/php5.y:6311
+// line internal/php5/php5.y:6317
 		{
 			yyVAL.node = &ast.ExprArrayDimFetch{
 				Node: ast.Node{
@@ -8927,7 +8933,7 @@ yydefault:
 		}
 	case 501:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:6336
+// line internal/php5/php5.y:6342
 		{
 			yyVAL.node = yyDollar[2].node
 
@@ -8937,7 +8943,7 @@ yydefault:
 		}
 	case 502:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:6347
+// line internal/php5/php5.y:6353
 		{
 			yyVAL.node = &ast.ScalarString{
 				Node: ast.Node{
@@ -8949,7 +8955,7 @@ yydefault:
 		}
 	case 503:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:6357
+// line internal/php5/php5.y:6363
 		{
 			// TODO: add option to handle 64 bit integer
 			if _, err := strconv.Atoi(string(yyDollar[1].token.Value)); err == nil {
@@ -8978,7 +8984,7 @@ yydefault:
 		}
 	case 504:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:6384
+// line internal/php5/php5.y:6390
 		{
 			identifier := &ast.Identifier{
 				Node: ast.Node{
@@ -8997,7 +9003,7 @@ yydefault:
 		}
 	case 505:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php5/php5.y:6404
+// line internal/php5/php5.y:6410
 		{
 			yyVAL.node = &ast.ExprIsset{
 				Node: ast.Node{
@@ -9012,7 +9018,7 @@ yydefault:
 		}
 	case 506:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php5/php5.y:6417
+// line internal/php5/php5.y:6423
 		{
 			yyVAL.node = &ast.ExprEmpty{
 				Node: ast.Node{
@@ -9026,7 +9032,7 @@ yydefault:
 		}
 	case 507:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php5/php5.y:6429
+// line internal/php5/php5.y:6435
 		{
 			yyVAL.node = &ast.ExprEmpty{
 				Node: ast.Node{
@@ -9040,7 +9046,7 @@ yydefault:
 		}
 	case 508:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php5/php5.y:6441
+// line internal/php5/php5.y:6447
 		{
 			yyVAL.node = &ast.ExprInclude{
 				Node: ast.Node{
@@ -9052,7 +9058,7 @@ yydefault:
 		}
 	case 509:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php5/php5.y:6451
+// line internal/php5/php5.y:6457
 		{
 			yyVAL.node = &ast.ExprIncludeOnce{
 				Node: ast.Node{
@@ -9064,7 +9070,7 @@ yydefault:
 		}
 	case 510:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php5/php5.y:6461
+// line internal/php5/php5.y:6467
 		{
 			yyVAL.node = &ast.ExprEval{
 				Node: ast.Node{
@@ -9078,31 +9084,31 @@ yydefault:
 		}
 	case 511:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php5/php5.y:6473
+// line internal/php5/php5.y:6479
 		{
-			yyVAL.node = &ast.ExprRequire{ast.Node{}, yyDollar[2].node}
-
-			// save position
-			yyVAL.node.GetNode().Position = position.NewTokenNodePosition(yyDollar[1].token, yyDollar[2].node)
-
-			// save comments
-			yylex.(*Parser).setFreeFloating(yyVAL.node, token.Start, yyDollar[1].token.SkippedTokens)
+			yyVAL.node = &ast.ExprRequire{
+				Node: ast.Node{
+					Position: position.NewTokenNodePosition(yyDollar[1].token, yyDollar[2].node),
+				},
+				RequireTkn: yyDollar[1].token,
+				Expr:       yyDollar[2].node,
+			}
 		}
 	case 512:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php5/php5.y:6483
+// line internal/php5/php5.y:6489
 		{
-			yyVAL.node = &ast.ExprRequireOnce{ast.Node{}, yyDollar[2].node}
-
-			// save position
-			yyVAL.node.GetNode().Position = position.NewTokenNodePosition(yyDollar[1].token, yyDollar[2].node)
-
-			// save comments
-			yylex.(*Parser).setFreeFloating(yyVAL.node, token.Start, yyDollar[1].token.SkippedTokens)
+			yyVAL.node = &ast.ExprRequireOnce{
+				Node: ast.Node{
+					Position: position.NewTokenNodePosition(yyDollar[1].token, yyDollar[2].node),
+				},
+				RequireOnceTkn: yyDollar[1].token,
+				Expr:           yyDollar[2].node,
+			}
 		}
 	case 513:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:6496
+// line internal/php5/php5.y:6502
 		{
 			yyVAL.node = &ast.ParserSeparatedList{
 				Items: []ast.Vertex{yyDollar[1].node},
@@ -9110,7 +9116,7 @@ yydefault:
 		}
 	case 514:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:6502
+// line internal/php5/php5.y:6508
 		{
 			yyDollar[1].node.(*ast.ParserSeparatedList).SeparatorTkns = append(yyDollar[1].node.(*ast.ParserSeparatedList).SeparatorTkns, yyDollar[2].token)
 			yyDollar[1].node.(*ast.ParserSeparatedList).Items = append(yyDollar[1].node.(*ast.ParserSeparatedList).Items, yyDollar[3].node)
@@ -9119,19 +9125,19 @@ yydefault:
 		}
 	case 515:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:6512
+// line internal/php5/php5.y:6518
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 516:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php5/php5.y:6516
+// line internal/php5/php5.y:6522
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 517:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:6523
+// line internal/php5/php5.y:6529
 		{
 			yyVAL.node = &ast.ExprClassConstFetch{
 				Node: ast.Node{
@@ -9150,7 +9156,7 @@ yydefault:
 		}
 	case 518:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:6540
+// line internal/php5/php5.y:6546
 		{
 			yyVAL.node = &ast.ExprClassConstFetch{
 				Node: ast.Node{
@@ -9169,7 +9175,7 @@ yydefault:
 		}
 	case 519:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:6560
+// line internal/php5/php5.y:6566
 		{
 			yyVAL.node = &ast.ExprClassConstFetch{
 				Node: ast.Node{
@@ -9188,7 +9194,7 @@ yydefault:
 		}
 	case 520:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php5/php5.y:6580
+// line internal/php5/php5.y:6586
 		{
 			yyVAL.node = &ast.ExprClassConstFetch{
 				Node: ast.Node{
diff --git a/internal/php5/php5.y b/internal/php5/php5.y
index bcdf386..d4cc523 100644
--- a/internal/php5/php5.y
+++ b/internal/php5/php5.y
@@ -1609,13 +1609,13 @@ foreach_variable:
             }
     |   '&' variable
             {
-                $$ = &ast.ExprReference{ast.Node{}, $2}
-
-                // save position
-                $$.GetNode().Position = position.NewTokenNodePosition($1, $2)
-
-                // save comments
-                yylex.(*Parser).setFreeFloating($$, token.Start, $1.SkippedTokens)
+                $$ = &ast.ExprReference{
+                    Node: ast.Node{
+                        Position: position.NewTokenNodePosition($1, $2),
+                    },
+                    AmpersandTkn: $1,
+                    Var:          $2,
+                }
             }
     |   T_LIST '(' assignment_list ')'
             {
@@ -3943,13 +3943,13 @@ expr_without_variable:
             }
     |   T_PRINT expr
             {
-                $$ = &ast.ExprPrint{ast.Node{}, $2}
-
-                // save position
-                $$.GetNode().Position = position.NewTokenNodePosition($1, $2)
-
-                // save comments
-                yylex.(*Parser).setFreeFloating($$, token.Start, $1.SkippedTokens)
+                $$ = &ast.ExprPrint{
+                    Node: ast.Node{
+                        Position: position.NewTokenNodePosition($1, $2),
+                    },
+                    PrintTkn: $1,
+                    Expr:     $2,
+                }
             }
     |   T_YIELD
             {
@@ -4182,6 +4182,7 @@ lexical_var_list:
                     Node: ast.Node{
                         Position: position.NewTokensPosition($3, $4),
                     },
+                    AmpersandTkn: $3,
                     Var: &ast.ExprVariable{
                         Node: ast.Node{
                             Position: position.NewTokenPosition($4),
@@ -4228,6 +4229,7 @@ lexical_var_list:
                             Node: ast.Node{
                                 Position: position.NewTokensPosition($1, $2),
                             },
+                            AmpersandTkn: $1,
                             Var: &ast.ExprVariable{
                                 Node: ast.Node{
                                     Position: position.NewTokenPosition($2),
@@ -6100,7 +6102,8 @@ non_empty_array_pair_list:
                         Node: ast.Node{
                             Position: position.NewTokenNodePosition($5, $6),
                         },
-                        Var: $6,
+                        AmpersandTkn: $5,
+                        Var:          $6,
                     },
                 }
 
@@ -6119,7 +6122,8 @@ non_empty_array_pair_list:
                         Node: ast.Node{
                             Position: position.NewTokenNodePosition($3, $4),
                         },
-                        Var: $4,
+                        AmpersandTkn: $3,
+                        Var:          $4,
                     },
                 }
 
@@ -6142,7 +6146,8 @@ non_empty_array_pair_list:
                                 Node: ast.Node{
                                     Position: position.NewTokenNodePosition($3, $4),
                                 },
-                                Var: $4,
+                                AmpersandTkn: $3,
+                                Var:          $4,
                             },
                         },
                     },
@@ -6160,7 +6165,8 @@ non_empty_array_pair_list:
                                 Node: ast.Node{
                                     Position: position.NewTokenNodePosition($1, $2),
                                 },
-                                Var: $2,
+                                AmpersandTkn: $1,
+                                Var:          $2,
                             },
                         },
                     },
@@ -6471,23 +6477,23 @@ internal_functions_in_yacc:
             }
     |   T_REQUIRE expr
             {
-                $$ = &ast.ExprRequire{ast.Node{}, $2}
-
-                // save position
-                $$.GetNode().Position = position.NewTokenNodePosition($1, $2)
-
-                // save comments
-                yylex.(*Parser).setFreeFloating($$, token.Start, $1.SkippedTokens)
+                $$ = &ast.ExprRequire{
+                    Node: ast.Node{
+                        Position: position.NewTokenNodePosition($1, $2),
+                    },
+                    RequireTkn: $1,
+                    Expr:       $2,
+                }
             }
     |   T_REQUIRE_ONCE expr
             {
-                $$ = &ast.ExprRequireOnce{ast.Node{}, $2}
-
-                // save position
-                $$.GetNode().Position = position.NewTokenNodePosition($1, $2)
-
-                // save comments
-                yylex.(*Parser).setFreeFloating($$, token.Start, $1.SkippedTokens)
+                $$ = &ast.ExprRequireOnce{
+                    Node: ast.Node{
+                        Position: position.NewTokenNodePosition($1, $2),
+                    },
+                    RequireOnceTkn: $1,
+                    Expr:           $2,
+                }
             }
 ;
 
diff --git a/internal/php7/php7.go b/internal/php7/php7.go
index cfb8eb3..8e48f1b 100644
--- a/internal/php7/php7.go
+++ b/internal/php7/php7.go
@@ -343,7 +343,7 @@ const yyEofCode = 1
 const yyErrCode = 2
 const yyInitialStackSize = 16
 
-// line internal/php7/php7.y:5008
+// line internal/php7/php7.y:5011
 
 // line yacctab:1
 var yyExca = [...]int{
@@ -3812,13 +3812,13 @@ yydefault:
 		yyDollar = yyS[yypt-2 : yypt+1]
 // line internal/php7/php7.y:1445
 		{
-			yyVAL.node = &ast.ExprReference{ast.Node{}, yyDollar[2].node}
-
-			// save position
-			yyVAL.node.GetNode().Position = position.NewTokenNodePosition(yyDollar[1].token, yyDollar[2].node)
-
-			// save comments
-			yylex.(*Parser).setFreeFloating(yyVAL.node, token.Start, yyDollar[1].token.SkippedTokens)
+			yyVAL.node = &ast.ExprReference{
+				Node: ast.Node{
+					Position: position.NewTokenNodePosition(yyDollar[1].token, yyDollar[2].node),
+				},
+				AmpersandTkn: yyDollar[1].token,
+				Var:          yyDollar[2].node,
+			}
 		}
 	case 186:
 		yyDollar = yyS[yypt-4 : yypt+1]
@@ -6156,13 +6156,13 @@ yydefault:
 		yyDollar = yyS[yypt-2 : yypt+1]
 // line internal/php7/php7.y:3583
 		{
-			yyVAL.node = &ast.ExprPrint{ast.Node{}, yyDollar[2].node}
-
-			// save position
-			yyVAL.node.GetNode().Position = position.NewTokenNodePosition(yyDollar[1].token, yyDollar[2].node)
-
-			// save comments
-			yylex.(*Parser).setFreeFloating(yyVAL.node, token.Start, yyDollar[1].token.SkippedTokens)
+			yyVAL.node = &ast.ExprPrint{
+				Node: ast.Node{
+					Position: position.NewTokenNodePosition(yyDollar[1].token, yyDollar[2].node),
+				},
+				PrintTkn: yyDollar[1].token,
+				Expr:     yyDollar[2].node,
+			}
 		}
 	case 367:
 		yyDollar = yyS[yypt-1 : yypt+1]
@@ -6347,27 +6347,28 @@ yydefault:
 		yyDollar = yyS[yypt-2 : yypt+1]
 // line internal/php7/php7.y:3761
 		{
-			identifier := &ast.Identifier{
+			yyVAL.node = &ast.ExprReference{
 				Node: ast.Node{
-					Position: position.NewTokenPosition(yyDollar[2].token),
+					Position: position.NewTokensPosition(yyDollar[1].token, yyDollar[2].token),
+				},
+				AmpersandTkn: yyDollar[1].token,
+				Var: &ast.ExprVariable{
+					Node: ast.Node{
+						Position: position.NewTokenPosition(yyDollar[2].token),
+					},
+					VarName: &ast.Identifier{
+						Node: ast.Node{
+							Position: position.NewTokenPosition(yyDollar[2].token),
+						},
+						IdentifierTkn: yyDollar[2].token,
+						Value:         yyDollar[2].token.Value,
+					},
 				},
-				IdentifierTkn: yyDollar[2].token,
-				Value:         yyDollar[2].token.Value,
 			}
-			variable := &ast.ExprVariable{ast.Node{}, identifier}
-			yyVAL.node = &ast.ExprReference{ast.Node{}, variable}
-
-			// save position
-			variable.GetNode().Position = position.NewTokenPosition(yyDollar[2].token)
-			yyVAL.node.GetNode().Position = position.NewTokensPosition(yyDollar[1].token, yyDollar[2].token)
-
-			// save comments
-			yylex.(*Parser).setFreeFloating(yyVAL.node, token.Start, yyDollar[1].token.SkippedTokens)
-			yylex.(*Parser).setFreeFloating(variable, token.Start, yyDollar[2].token.SkippedTokens)
 		}
 	case 384:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php7/php7.y:3784
+// line internal/php7/php7.y:3785
 		{
 			yyVAL.node = &ast.ExprFunctionCall{
 				Node: ast.Node{
@@ -6381,7 +6382,7 @@ yydefault:
 		}
 	case 385:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php7/php7.y:3796
+// line internal/php7/php7.y:3797
 		{
 			yyVAL.node = &ast.ExprStaticCall{ast.Node{}, yyDollar[1].node, yyDollar[3].node, yyDollar[4].node.(*ast.ArgumentList)}
 
@@ -6394,7 +6395,7 @@ yydefault:
 		}
 	case 386:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php7/php7.y:3807
+// line internal/php7/php7.y:3808
 		{
 			yyVAL.node = &ast.ExprStaticCall{ast.Node{}, yyDollar[1].node, yyDollar[3].node, yyDollar[4].node.(*ast.ArgumentList)}
 
@@ -6407,7 +6408,7 @@ yydefault:
 		}
 	case 387:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php7/php7.y:3818
+// line internal/php7/php7.y:3819
 		{
 			yyVAL.node = &ast.ExprFunctionCall{
 				Node: ast.Node{
@@ -6421,7 +6422,7 @@ yydefault:
 		}
 	case 388:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:3833
+// line internal/php7/php7.y:3834
 		{
 			yyVAL.node = &ast.Identifier{
 				Node: ast.Node{
@@ -6433,31 +6434,31 @@ yydefault:
 		}
 	case 389:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:3843
+// line internal/php7/php7.y:3844
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 390:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:3850
+// line internal/php7/php7.y:3851
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 391:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:3854
+// line internal/php7/php7.y:3855
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 392:
 		yyDollar = yyS[yypt-0 : yypt+1]
-// line internal/php7/php7.y:3861
+// line internal/php7/php7.y:3862
 		{
 			yyVAL.node = nil
 		}
 	case 393:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php7/php7.y:3865
+// line internal/php7/php7.y:3866
 		{
 			yyVAL.node = &ast.ParserBrackets{
 				Node: ast.Node{
@@ -6474,13 +6475,13 @@ yydefault:
 		}
 	case 394:
 		yyDollar = yyS[yypt-0 : yypt+1]
-// line internal/php7/php7.y:3883
+// line internal/php7/php7.y:3884
 		{
 			yyVAL.list = []ast.Vertex{}
 		}
 	case 395:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:3887
+// line internal/php7/php7.y:3888
 		{
 			yyVAL.list = []ast.Vertex{
 				&ast.ScalarEncapsedStringPart{
@@ -6494,25 +6495,25 @@ yydefault:
 		}
 	case 396:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:3899
+// line internal/php7/php7.y:3900
 		{
 			yyVAL.list = yyDollar[1].list
 		}
 	case 397:
 		yyDollar = yyS[yypt-0 : yypt+1]
-// line internal/php7/php7.y:3906
+// line internal/php7/php7.y:3907
 		{
 			yyVAL.node = nil
 		}
 	case 398:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:3910
+// line internal/php7/php7.y:3911
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 399:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php7/php7.y:3917
+// line internal/php7/php7.y:3918
 		{
 			yyVAL.node = &ast.ExprArray{
 				Node: ast.Node{
@@ -6527,7 +6528,7 @@ yydefault:
 		}
 	case 400:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php7/php7.y:3930
+// line internal/php7/php7.y:3931
 		{
 			yyVAL.node = &ast.ExprArray{
 				Node: ast.Node{
@@ -6541,7 +6542,7 @@ yydefault:
 		}
 	case 401:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:3942
+// line internal/php7/php7.y:3943
 		{
 			yyVAL.node = &ast.ScalarString{
 				Node: ast.Node{
@@ -6553,7 +6554,7 @@ yydefault:
 		}
 	case 402:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:3955
+// line internal/php7/php7.y:3956
 		{
 			yyVAL.node = &ast.ScalarLnumber{
 				Node: ast.Node{
@@ -6565,7 +6566,7 @@ yydefault:
 		}
 	case 403:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:3965
+// line internal/php7/php7.y:3966
 		{
 			yyVAL.node = &ast.ScalarDnumber{
 				Node: ast.Node{
@@ -6577,7 +6578,7 @@ yydefault:
 		}
 	case 404:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:3975
+// line internal/php7/php7.y:3976
 		{
 			yyVAL.node = &ast.ScalarMagicConstant{
 				Node: ast.Node{
@@ -6589,7 +6590,7 @@ yydefault:
 		}
 	case 405:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:3985
+// line internal/php7/php7.y:3986
 		{
 			yyVAL.node = &ast.ScalarMagicConstant{
 				Node: ast.Node{
@@ -6601,7 +6602,7 @@ yydefault:
 		}
 	case 406:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:3995
+// line internal/php7/php7.y:3996
 		{
 			yyVAL.node = &ast.ScalarMagicConstant{
 				Node: ast.Node{
@@ -6613,7 +6614,7 @@ yydefault:
 		}
 	case 407:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:4005
+// line internal/php7/php7.y:4006
 		{
 			yyVAL.node = &ast.ScalarMagicConstant{
 				Node: ast.Node{
@@ -6625,7 +6626,7 @@ yydefault:
 		}
 	case 408:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:4015
+// line internal/php7/php7.y:4016
 		{
 			yyVAL.node = &ast.ScalarMagicConstant{
 				Node: ast.Node{
@@ -6637,7 +6638,7 @@ yydefault:
 		}
 	case 409:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:4025
+// line internal/php7/php7.y:4026
 		{
 			yyVAL.node = &ast.ScalarMagicConstant{
 				Node: ast.Node{
@@ -6649,7 +6650,7 @@ yydefault:
 		}
 	case 410:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:4035
+// line internal/php7/php7.y:4036
 		{
 			yyVAL.node = &ast.ScalarMagicConstant{
 				Node: ast.Node{
@@ -6661,7 +6662,7 @@ yydefault:
 		}
 	case 411:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:4045
+// line internal/php7/php7.y:4046
 		{
 			yyVAL.node = &ast.ScalarMagicConstant{
 				Node: ast.Node{
@@ -6673,7 +6674,7 @@ yydefault:
 		}
 	case 412:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php7/php7.y:4055
+// line internal/php7/php7.y:4056
 		{
 			yyVAL.node = &ast.ScalarHeredoc{
 				Node: ast.Node{
@@ -6694,7 +6695,7 @@ yydefault:
 		}
 	case 413:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php7/php7.y:4074
+// line internal/php7/php7.y:4075
 		{
 			yyVAL.node = &ast.ScalarHeredoc{
 				Node: ast.Node{
@@ -6706,7 +6707,7 @@ yydefault:
 		}
 	case 414:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php7/php7.y:4084
+// line internal/php7/php7.y:4085
 		{
 			yyVAL.node = &ast.ScalarEncapsed{
 				Node: ast.Node{
@@ -6719,7 +6720,7 @@ yydefault:
 		}
 	case 415:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php7/php7.y:4095
+// line internal/php7/php7.y:4096
 		{
 			yyVAL.node = &ast.ScalarHeredoc{
 				Node: ast.Node{
@@ -6732,19 +6733,19 @@ yydefault:
 		}
 	case 416:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:4106
+// line internal/php7/php7.y:4107
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 417:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:4110
+// line internal/php7/php7.y:4111
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 418:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:4117
+// line internal/php7/php7.y:4118
 		{
 			yyVAL.node = &ast.ExprConstFetch{
 				Node: ast.Node{
@@ -6755,7 +6756,7 @@ yydefault:
 		}
 	case 419:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php7/php7.y:4126
+// line internal/php7/php7.y:4127
 		{
 			yyVAL.node = &ast.ExprClassConstFetch{
 				Node: ast.Node{
@@ -6774,7 +6775,7 @@ yydefault:
 		}
 	case 420:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php7/php7.y:4143
+// line internal/php7/php7.y:4144
 		{
 			yyVAL.node = &ast.ExprClassConstFetch{
 				Node: ast.Node{
@@ -6793,43 +6794,43 @@ yydefault:
 		}
 	case 421:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:4163
+// line internal/php7/php7.y:4164
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 422:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:4167
+// line internal/php7/php7.y:4168
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 423:
 		yyDollar = yyS[yypt-0 : yypt+1]
-// line internal/php7/php7.y:4174
+// line internal/php7/php7.y:4175
 		{
 			yyVAL.node = nil
 		}
 	case 424:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:4178
+// line internal/php7/php7.y:4179
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 425:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:4185
+// line internal/php7/php7.y:4186
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 426:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:4192
+// line internal/php7/php7.y:4193
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 427:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php7/php7.y:4196
+// line internal/php7/php7.y:4197
 		{
 			yyVAL.node = &ast.ParserBrackets{
 				Node: ast.Node{
@@ -6846,19 +6847,19 @@ yydefault:
 		}
 	case 428:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:4211
+// line internal/php7/php7.y:4212
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 429:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:4218
+// line internal/php7/php7.y:4219
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 430:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php7/php7.y:4222
+// line internal/php7/php7.y:4223
 		{
 			yyVAL.node = &ast.ParserBrackets{
 				Node: ast.Node{
@@ -6875,19 +6876,19 @@ yydefault:
 		}
 	case 431:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:4237
+// line internal/php7/php7.y:4238
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 432:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:4244
+// line internal/php7/php7.y:4245
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 433:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php7/php7.y:4248
+// line internal/php7/php7.y:4249
 		{
 			yyVAL.node = &ast.ExprArrayDimFetch{
 				Node: ast.Node{
@@ -6901,7 +6902,7 @@ yydefault:
 		}
 	case 434:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php7/php7.y:4260
+// line internal/php7/php7.y:4261
 		{
 			yyVAL.node = &ast.ExprArrayDimFetch{
 				Node: ast.Node{
@@ -6915,7 +6916,7 @@ yydefault:
 		}
 	case 435:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php7/php7.y:4272
+// line internal/php7/php7.y:4273
 		{
 			yyVAL.node = &ast.ExprArrayDimFetch{
 				Node: ast.Node{
@@ -6929,7 +6930,7 @@ yydefault:
 		}
 	case 436:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php7/php7.y:4284
+// line internal/php7/php7.y:4285
 		{
 			yyVAL.node = &ast.ExprMethodCall{
 				Node: ast.Node{
@@ -6945,25 +6946,25 @@ yydefault:
 		}
 	case 437:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:4298
+// line internal/php7/php7.y:4299
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 438:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:4305
+// line internal/php7/php7.y:4306
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 439:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:4309
+// line internal/php7/php7.y:4310
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 440:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php7/php7.y:4313
+// line internal/php7/php7.y:4314
 		{
 			yyVAL.node = &ast.ExprPropertyFetch{
 				Node: ast.Node{
@@ -6976,7 +6977,7 @@ yydefault:
 		}
 	case 441:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:4327
+// line internal/php7/php7.y:4328
 		{
 			name := &ast.Identifier{
 				Node: ast.Node{
@@ -6995,7 +6996,7 @@ yydefault:
 		}
 	case 442:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php7/php7.y:4344
+// line internal/php7/php7.y:4345
 		{
 			yyVAL.node = &ast.ExprVariable{ast.Node{}, yyDollar[3].node}
 
@@ -7009,7 +7010,7 @@ yydefault:
 		}
 	case 443:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php7/php7.y:4356
+// line internal/php7/php7.y:4357
 		{
 			yyVAL.node = &ast.ExprVariable{ast.Node{}, yyDollar[2].node}
 
@@ -7021,7 +7022,7 @@ yydefault:
 		}
 	case 444:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php7/php7.y:4369
+// line internal/php7/php7.y:4370
 		{
 			yyVAL.node = &ast.ExprStaticPropertyFetch{ast.Node{}, yyDollar[1].node, yyDollar[3].node}
 
@@ -7034,7 +7035,7 @@ yydefault:
 		}
 	case 445:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php7/php7.y:4380
+// line internal/php7/php7.y:4381
 		{
 			yyVAL.node = &ast.ExprStaticPropertyFetch{ast.Node{}, yyDollar[1].node, yyDollar[3].node}
 
@@ -7047,13 +7048,13 @@ yydefault:
 		}
 	case 446:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:4394
+// line internal/php7/php7.y:4395
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 447:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php7/php7.y:4398
+// line internal/php7/php7.y:4399
 		{
 			yyVAL.node = &ast.ExprArrayDimFetch{
 				Node: ast.Node{
@@ -7067,7 +7068,7 @@ yydefault:
 		}
 	case 448:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php7/php7.y:4410
+// line internal/php7/php7.y:4411
 		{
 			yyVAL.node = &ast.ExprArrayDimFetch{
 				Node: ast.Node{
@@ -7081,7 +7082,7 @@ yydefault:
 		}
 	case 449:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php7/php7.y:4422
+// line internal/php7/php7.y:4423
 		{
 			yyVAL.node = &ast.ExprPropertyFetch{
 				Node: ast.Node{
@@ -7094,7 +7095,7 @@ yydefault:
 		}
 	case 450:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php7/php7.y:4433
+// line internal/php7/php7.y:4434
 		{
 			yyVAL.node = &ast.ExprStaticPropertyFetch{ast.Node{}, yyDollar[1].node, yyDollar[3].node}
 
@@ -7107,7 +7108,7 @@ yydefault:
 		}
 	case 451:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php7/php7.y:4444
+// line internal/php7/php7.y:4445
 		{
 			yyVAL.node = &ast.ExprStaticPropertyFetch{ast.Node{}, yyDollar[1].node, yyDollar[3].node}
 
@@ -7120,7 +7121,7 @@ yydefault:
 		}
 	case 452:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:4458
+// line internal/php7/php7.y:4459
 		{
 			yyVAL.node = &ast.Identifier{
 				Node: ast.Node{
@@ -7132,7 +7133,7 @@ yydefault:
 		}
 	case 453:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php7/php7.y:4468
+// line internal/php7/php7.y:4469
 		{
 			yyVAL.node = yyDollar[2].node
 
@@ -7142,13 +7143,13 @@ yydefault:
 		}
 	case 454:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:4476
+// line internal/php7/php7.y:4477
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 455:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:4483
+// line internal/php7/php7.y:4484
 		{
 			yyVAL.node = &ast.Identifier{
 				Node: ast.Node{
@@ -7160,7 +7161,7 @@ yydefault:
 		}
 	case 456:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php7/php7.y:4493
+// line internal/php7/php7.y:4494
 		{
 			yyVAL.node = yyDollar[2].node
 
@@ -7170,13 +7171,13 @@ yydefault:
 		}
 	case 457:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:4501
+// line internal/php7/php7.y:4502
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 458:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:4508
+// line internal/php7/php7.y:4509
 		{
 			pairList := yyDollar[1].node.(*ast.ParserSeparatedList)
 			fistPair := pairList.Items[0].(*ast.ExprArrayItem)
@@ -7189,19 +7190,19 @@ yydefault:
 		}
 	case 459:
 		yyDollar = yyS[yypt-0 : yypt+1]
-// line internal/php7/php7.y:4522
+// line internal/php7/php7.y:4523
 		{
 			yyVAL.node = &ast.ExprArrayItem{}
 		}
 	case 460:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:4526
+// line internal/php7/php7.y:4527
 		{
 			yyVAL.node = yyDollar[1].node
 		}
 	case 461:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php7/php7.y:4533
+// line internal/php7/php7.y:4534
 		{
 			yyDollar[1].node.(*ast.ParserSeparatedList).SeparatorTkns = append(yyDollar[1].node.(*ast.ParserSeparatedList).SeparatorTkns, yyDollar[2].token)
 			yyDollar[1].node.(*ast.ParserSeparatedList).Items = append(yyDollar[1].node.(*ast.ParserSeparatedList).Items, yyDollar[3].node)
@@ -7210,7 +7211,7 @@ yydefault:
 		}
 	case 462:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:4540
+// line internal/php7/php7.y:4541
 		{
 			yyVAL.node = &ast.ParserSeparatedList{
 				Items: []ast.Vertex{yyDollar[1].node},
@@ -7218,7 +7219,7 @@ yydefault:
 		}
 	case 463:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php7/php7.y:4549
+// line internal/php7/php7.y:4550
 		{
 			yyVAL.node = &ast.ExprArrayItem{
 				Node: ast.Node{
@@ -7231,7 +7232,7 @@ yydefault:
 		}
 	case 464:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:4560
+// line internal/php7/php7.y:4561
 		{
 			yyVAL.node = &ast.ExprArrayItem{
 				Node: ast.Node{
@@ -7242,7 +7243,7 @@ yydefault:
 		}
 	case 465:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php7/php7.y:4569
+// line internal/php7/php7.y:4570
 		{
 			yyVAL.node = &ast.ExprArrayItem{
 				Node: ast.Node{
@@ -7254,13 +7255,14 @@ yydefault:
 					Node: ast.Node{
 						Position: position.NewTokenNodePosition(yyDollar[3].token, yyDollar[4].node),
 					},
-					Var: yyDollar[4].node,
+					AmpersandTkn: yyDollar[3].token,
+					Var:          yyDollar[4].node,
 				},
 			}
 		}
 	case 466:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php7/php7.y:4585
+// line internal/php7/php7.y:4587
 		{
 			yyVAL.node = &ast.ExprArrayItem{
 				Node: ast.Node{
@@ -7270,13 +7272,14 @@ yydefault:
 					Node: ast.Node{
 						Position: position.NewTokenNodePosition(yyDollar[1].token, yyDollar[2].node),
 					},
-					Var: yyDollar[2].node,
+					AmpersandTkn: yyDollar[1].token,
+					Var:          yyDollar[2].node,
 				},
 			}
 		}
 	case 467:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php7/php7.y:4599
+// line internal/php7/php7.y:4602
 		{
 			yyVAL.node = &ast.ExprArrayItem{
 				Node: ast.Node{
@@ -7288,7 +7291,7 @@ yydefault:
 		}
 	case 468:
 		yyDollar = yyS[yypt-6 : yypt+1]
-// line internal/php7/php7.y:4609
+// line internal/php7/php7.y:4612
 		{
 			yyVAL.node = &ast.ExprArrayItem{
 				Node: ast.Node{
@@ -7310,7 +7313,7 @@ yydefault:
 		}
 	case 469:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php7/php7.y:4629
+// line internal/php7/php7.y:4632
 		{
 			yyVAL.node = &ast.ExprArrayItem{
 				Node: ast.Node{
@@ -7330,13 +7333,13 @@ yydefault:
 		}
 	case 470:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php7/php7.y:4650
+// line internal/php7/php7.y:4653
 		{
 			yyVAL.list = append(yyDollar[1].list, yyDollar[2].node)
 		}
 	case 471:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php7/php7.y:4654
+// line internal/php7/php7.y:4657
 		{
 			yyVAL.list = append(
 				yyDollar[1].list,
@@ -7351,13 +7354,13 @@ yydefault:
 		}
 	case 472:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:4667
+// line internal/php7/php7.y:4670
 		{
 			yyVAL.list = []ast.Vertex{yyDollar[1].node}
 		}
 	case 473:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php7/php7.y:4671
+// line internal/php7/php7.y:4674
 		{
 			yyVAL.list = []ast.Vertex{
 				&ast.ScalarEncapsedStringPart{
@@ -7372,7 +7375,7 @@ yydefault:
 		}
 	case 474:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:4687
+// line internal/php7/php7.y:4690
 		{
 			name := &ast.Identifier{
 				Node: ast.Node{
@@ -7391,7 +7394,7 @@ yydefault:
 		}
 	case 475:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php7/php7.y:4704
+// line internal/php7/php7.y:4707
 		{
 			yyVAL.node = &ast.ExprArrayDimFetch{
 				Node: ast.Node{
@@ -7416,7 +7419,7 @@ yydefault:
 		}
 	case 476:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php7/php7.y:4727
+// line internal/php7/php7.y:4730
 		{
 			yyVAL.node = &ast.ExprPropertyFetch{
 				Node: ast.Node{
@@ -7446,7 +7449,7 @@ yydefault:
 		}
 	case 477:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php7/php7.y:4755
+// line internal/php7/php7.y:4758
 		{
 			variable := &ast.ExprVariable{ast.Node{}, yyDollar[2].node}
 
@@ -7461,7 +7464,7 @@ yydefault:
 		}
 	case 478:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php7/php7.y:4768
+// line internal/php7/php7.y:4771
 		{
 			name := &ast.Identifier{
 				Node: ast.Node{
@@ -7483,7 +7486,7 @@ yydefault:
 		}
 	case 479:
 		yyDollar = yyS[yypt-6 : yypt+1]
-// line internal/php7/php7.y:4788
+// line internal/php7/php7.y:4791
 		{
 			yyVAL.node = &ast.ExprArrayDimFetch{
 				Node: ast.Node{
@@ -7510,7 +7513,7 @@ yydefault:
 		}
 	case 480:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php7/php7.y:4813
+// line internal/php7/php7.y:4816
 		{
 			yyVAL.node = yyDollar[2].node
 
@@ -7520,7 +7523,7 @@ yydefault:
 		}
 	case 481:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:4824
+// line internal/php7/php7.y:4827
 		{
 			yyVAL.node = &ast.ScalarString{
 				Node: ast.Node{
@@ -7532,7 +7535,7 @@ yydefault:
 		}
 	case 482:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:4834
+// line internal/php7/php7.y:4837
 		{
 			// TODO: add option to handle 64 bit integer
 			if _, err := strconv.Atoi(string(yyDollar[1].token.Value)); err == nil {
@@ -7555,7 +7558,7 @@ yydefault:
 		}
 	case 483:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php7/php7.y:4855
+// line internal/php7/php7.y:4858
 		{
 			_, err := strconv.Atoi(string(yyDollar[2].token.Value))
 			isInt := err == nil
@@ -7583,7 +7586,7 @@ yydefault:
 		}
 	case 484:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:4881
+// line internal/php7/php7.y:4884
 		{
 			identifier := &ast.Identifier{
 				Node: ast.Node{
@@ -7602,7 +7605,7 @@ yydefault:
 		}
 	case 485:
 		yyDollar = yyS[yypt-5 : yypt+1]
-// line internal/php7/php7.y:4901
+// line internal/php7/php7.y:4904
 		{
 			if yyDollar[4].token != nil {
 				yyDollar[3].node.(*ast.ParserSeparatedList).SeparatorTkns = append(yyDollar[3].node.(*ast.ParserSeparatedList).SeparatorTkns, yyDollar[4].token)
@@ -7621,7 +7624,7 @@ yydefault:
 		}
 	case 486:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php7/php7.y:4918
+// line internal/php7/php7.y:4921
 		{
 			yyVAL.node = &ast.ExprEmpty{
 				Node: ast.Node{
@@ -7635,7 +7638,7 @@ yydefault:
 		}
 	case 487:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php7/php7.y:4930
+// line internal/php7/php7.y:4933
 		{
 			yyVAL.node = &ast.ExprInclude{
 				Node: ast.Node{
@@ -7647,7 +7650,7 @@ yydefault:
 		}
 	case 488:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php7/php7.y:4940
+// line internal/php7/php7.y:4943
 		{
 			yyVAL.node = &ast.ExprIncludeOnce{
 				Node: ast.Node{
@@ -7659,7 +7662,7 @@ yydefault:
 		}
 	case 489:
 		yyDollar = yyS[yypt-4 : yypt+1]
-// line internal/php7/php7.y:4950
+// line internal/php7/php7.y:4953
 		{
 			yyVAL.node = &ast.ExprEval{
 				Node: ast.Node{
@@ -7673,31 +7676,31 @@ yydefault:
 		}
 	case 490:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php7/php7.y:4962
+// line internal/php7/php7.y:4965
 		{
-			yyVAL.node = &ast.ExprRequire{ast.Node{}, yyDollar[2].node}
-
-			// save position
-			yyVAL.node.GetNode().Position = position.NewTokenNodePosition(yyDollar[1].token, yyDollar[2].node)
-
-			// save comments
-			yylex.(*Parser).setFreeFloating(yyVAL.node, token.Start, yyDollar[1].token.SkippedTokens)
+			yyVAL.node = &ast.ExprRequire{
+				Node: ast.Node{
+					Position: position.NewTokenNodePosition(yyDollar[1].token, yyDollar[2].node),
+				},
+				RequireTkn: yyDollar[1].token,
+				Expr:       yyDollar[2].node,
+			}
 		}
 	case 491:
 		yyDollar = yyS[yypt-2 : yypt+1]
-// line internal/php7/php7.y:4972
+// line internal/php7/php7.y:4975
 		{
-			yyVAL.node = &ast.ExprRequireOnce{ast.Node{}, yyDollar[2].node}
-
-			// save position
-			yyVAL.node.GetNode().Position = position.NewTokenNodePosition(yyDollar[1].token, yyDollar[2].node)
-
-			// save comments
-			yylex.(*Parser).setFreeFloating(yyVAL.node, token.Start, yyDollar[1].token.SkippedTokens)
+			yyVAL.node = &ast.ExprRequireOnce{
+				Node: ast.Node{
+					Position: position.NewTokenNodePosition(yyDollar[1].token, yyDollar[2].node),
+				},
+				RequireOnceTkn: yyDollar[1].token,
+				Expr:           yyDollar[2].node,
+			}
 		}
 	case 492:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:4985
+// line internal/php7/php7.y:4988
 		{
 			yyVAL.node = &ast.ParserSeparatedList{
 				Items: []ast.Vertex{yyDollar[1].node},
@@ -7705,7 +7708,7 @@ yydefault:
 		}
 	case 493:
 		yyDollar = yyS[yypt-3 : yypt+1]
-// line internal/php7/php7.y:4991
+// line internal/php7/php7.y:4994
 		{
 			yyDollar[1].node.(*ast.ParserSeparatedList).SeparatorTkns = append(yyDollar[1].node.(*ast.ParserSeparatedList).SeparatorTkns, yyDollar[2].token)
 			yyDollar[1].node.(*ast.ParserSeparatedList).Items = append(yyDollar[1].node.(*ast.ParserSeparatedList).Items, yyDollar[3].node)
@@ -7714,7 +7717,7 @@ yydefault:
 		}
 	case 494:
 		yyDollar = yyS[yypt-1 : yypt+1]
-// line internal/php7/php7.y:5001
+// line internal/php7/php7.y:5004
 		{
 			yyVAL.node = yyDollar[1].node
 		}
diff --git a/internal/php7/php7.y b/internal/php7/php7.y
index 581403b..bd1fe44 100644
--- a/internal/php7/php7.y
+++ b/internal/php7/php7.y
@@ -1443,13 +1443,13 @@ foreach_variable:
             }
     |   '&' variable
             {
-                $$ = &ast.ExprReference{ast.Node{}, $2}
-
-                // save position
-                $$.GetNode().Position = position.NewTokenNodePosition($1, $2)
-
-                // save comments
-                yylex.(*Parser).setFreeFloating($$, token.Start, $1.SkippedTokens)
+                $$ = &ast.ExprReference{
+                    Node: ast.Node{
+                        Position: position.NewTokenNodePosition($1, $2),
+                    },
+                    AmpersandTkn: $1,
+                    Var:          $2,
+                }
             }
     |   T_LIST '(' array_pair_list ')'
             {
@@ -3581,13 +3581,13 @@ expr_without_variable:
             }
     |   T_PRINT expr
             {
-                $$ = &ast.ExprPrint{ast.Node{}, $2}
-
-                // save position
-                $$.GetNode().Position = position.NewTokenNodePosition($1, $2)
-
-                // save comments
-                yylex.(*Parser).setFreeFloating($$, token.Start, $1.SkippedTokens)
+                $$ = &ast.ExprPrint{
+                    Node: ast.Node{
+                        Position: position.NewTokenNodePosition($1, $2),
+                    },
+                    PrintTkn: $1,
+                    Expr:     $2,
+                }
             }
     |   T_YIELD
             {
@@ -3759,23 +3759,24 @@ lexical_var:
             }
     |   '&' T_VARIABLE
             {
-                identifier := &ast.Identifier{
+                $$ = &ast.ExprReference{
                     Node: ast.Node{
-                        Position: position.NewTokenPosition($2),
+                        Position: position.NewTokensPosition($1, $2),
+                    },
+                    AmpersandTkn: $1,
+                    Var: &ast.ExprVariable{
+                        Node: ast.Node{
+                            Position: position.NewTokenPosition($2),
+                        },
+                        VarName: &ast.Identifier{
+                            Node: ast.Node{
+                                Position: position.NewTokenPosition($2),
+                            },
+                            IdentifierTkn: $2,
+                            Value:         $2.Value,
+                        },
                     },
-                    IdentifierTkn: $2,
-                    Value:         $2.Value,
                 }
-                variable := &ast.ExprVariable{ast.Node{}, identifier}
-                $$ = &ast.ExprReference{ast.Node{}, variable}
-
-                // save position
-                variable.GetNode().Position = position.NewTokenPosition($2)
-                $$.GetNode().Position = position.NewTokensPosition($1, $2)
-
-                // save comments
-                yylex.(*Parser).setFreeFloating($$, token.Start, $1.SkippedTokens)
-                yylex.(*Parser).setFreeFloating(variable, token.Start, $2.SkippedTokens)
             }
 ;
 
@@ -4577,7 +4578,8 @@ array_pair:
                         Node: ast.Node{
                             Position: position.NewTokenNodePosition($3, $4),
                         },
-                        Var: $4,
+                        AmpersandTkn: $3,
+                        Var:          $4,
                     },
                 }
             }
@@ -4591,7 +4593,8 @@ array_pair:
                         Node: ast.Node{
                             Position: position.NewTokenNodePosition($1, $2),
                         },
-                        Var: $2,
+                        AmpersandTkn: $1,
+                        Var:          $2,
                     },
                 }
             }
@@ -4960,23 +4963,23 @@ internal_functions_in_yacc:
             }
     |   T_REQUIRE expr
             {
-                $$ = &ast.ExprRequire{ast.Node{}, $2}
-
-                // save position
-                $$.GetNode().Position = position.NewTokenNodePosition($1, $2)
-
-                // save comments
-                yylex.(*Parser).setFreeFloating($$, token.Start, $1.SkippedTokens)
+                $$ = &ast.ExprRequire{
+                    Node: ast.Node{
+                        Position: position.NewTokenNodePosition($1, $2),
+                    },
+                    RequireTkn: $1,
+                    Expr:       $2,
+                }
             }
     |   T_REQUIRE_ONCE expr
             {
-                $$ = &ast.ExprRequireOnce{ast.Node{}, $2}
-
-                // save position
-                $$.GetNode().Position = position.NewTokenNodePosition($1, $2)
-
-                // save comments
-                yylex.(*Parser).setFreeFloating($$, token.Start, $1.SkippedTokens)
+                $$ = &ast.ExprRequireOnce{
+                    Node: ast.Node{
+                        Position: position.NewTokenNodePosition($1, $2),
+                    },
+                    RequireOnceTkn: $1,
+                    Expr:           $2,
+                }
             }
 ;
 
diff --git a/pkg/ast/node.go b/pkg/ast/node.go
index cadaa12..c6d4c8d 100644
--- a/pkg/ast/node.go
+++ b/pkg/ast/node.go
@@ -1288,7 +1288,8 @@ func (n *ExprPreInc) Accept(v NodeVisitor) {
 // ExprPrint node
 type ExprPrint struct {
 	Node
-	Expr Vertex
+	PrintTkn *token.Token
+	Expr     Vertex
 }
 
 func (n *ExprPrint) Accept(v NodeVisitor) {
@@ -1310,7 +1311,8 @@ func (n *ExprPropertyFetch) Accept(v NodeVisitor) {
 // ExprReference node
 type ExprReference struct {
 	Node
-	Var Vertex
+	AmpersandTkn *token.Token
+	Var          Vertex
 }
 
 func (n *ExprReference) Accept(v NodeVisitor) {
@@ -1320,7 +1322,8 @@ func (n *ExprReference) Accept(v NodeVisitor) {
 // ExprRequire node
 type ExprRequire struct {
 	Node
-	Expr Vertex
+	RequireTkn *token.Token
+	Expr       Vertex
 }
 
 func (n *ExprRequire) Accept(v NodeVisitor) {
@@ -1330,7 +1333,8 @@ func (n *ExprRequire) Accept(v NodeVisitor) {
 // ExprRequireOnce node
 type ExprRequireOnce struct {
 	Node
-	Expr Vertex
+	RequireOnceTkn *token.Token
+	Expr           Vertex
 }
 
 func (n *ExprRequireOnce) Accept(v NodeVisitor) {