diff --git a/node/stmt/interface.go b/node/stmt/interface.go
index d191dbe..fbd7020 100644
--- a/node/stmt/interface.go
+++ b/node/stmt/interface.go
@@ -12,12 +12,11 @@ type Interface struct {
 	node.SimpleNode
 	token   token.Token
 	name    token.Token
-	extends node.Node
+	extends []node.Node
 	stmts   []node.Node
 }
 
-//TODO: stmts myst be []node.Node
-func NewInterface(token token.Token, name token.Token, extends node.Node, stmts []node.Node) node.Node {
+func NewInterface(token token.Token, name token.Token, extends []node.Node, stmts []node.Node) node.Node {
 	return Interface{
 		node.SimpleNode{Name: "Interface", Attributes: make(map[string]string)},
 		token,
@@ -32,7 +31,9 @@ func (n Interface) Print(out io.Writer, indent string) {
 
 	if n.extends != nil {
 		fmt.Fprintf(out, "\n%vextends:", indent+"  ")
-		n.extends.Print(out, indent+"    ")
+		for _, nn := range n.extends {
+			nn.Print(out, indent+"    ")
+		}
 	}
 
 	if n.stmts != nil {
diff --git a/parser/parser.go b/parser/parser.go
index 467ec80..4317cae 100644
--- a/parser/parser.go
+++ b/parser/parser.go
@@ -604,21 +604,21 @@ var yyAct = [...]int{
 	807, 197, 199, 198, 332, 607, 795, 610, 608, 308,
 	766, 718, 669, 279, 280, 642, 817, 633, 628, 785,
 	229, 564, 812, 824, 810, 825, 554, 118, 231, 409,
-	1, 831, 912, 570, 659, 544, 255, 256, 529, 803,
-	842, 221, 519, 830, 835, 813, 578, 846, 833, 365,
-	855, 804, 841, 687, 688, 689, 686, 685, 684, 848,
+	1, 831, 379, 912, 659, 544, 255, 256, 570, 803,
+	842, 529, 221, 830, 519, 813, 578, 846, 833, 835,
+	855, 365, 841, 687, 688, 689, 686, 685, 684, 804,
 	864, 854, 167, 168, 161, 162, 160, 163, 165, 166,
-	863, 178, 651, 144, 872, 748, 873, 141, 868, 321,
-	877, 148, 800, 164, 861, 666, 879, 829, 250, 37,
-	681, 679, 855, 678, 782, 878, 223, 42, 882, 41,
-	15, 14, 606, 854, 888, 889, 266, 48, 890, 87,
-	88, 89, 90, 91, 47, 107, 49, 82, 73, 74,
-	80, 75, 71, 247, 896, 893, 61, 264, 897, 60,
-	898, 902, 901, 900, 853, 578, 852, 163, 165, 166,
-	586, 178, 851, 850, 677, 907, 44, 909, 572, 910,
-	737, 663, 860, 164, 55, 56, 915, 645, 309, 117,
-	57, 296, 58, 53, 54, 62, 63, 64, 65, 66,
-	67, 68, 70, 379, 51, 84, 52, 3, 433, 744,
+	863, 178, 848, 651, 872, 144, 873, 748, 868, 141,
+	877, 321, 148, 164, 861, 800, 879, 666, 829, 250,
+	37, 681, 855, 679, 782, 878, 678, 223, 882, 42,
+	41, 15, 14, 854, 888, 889, 606, 266, 890, 87,
+	88, 89, 90, 91, 48, 47, 107, 49, 73, 74,
+	82, 75, 80, 71, 896, 893, 247, 61, 897, 264,
+	898, 902, 901, 900, 60, 578, 853, 163, 165, 166,
+	586, 178, 852, 851, 850, 907, 677, 909, 44, 910,
+	572, 737, 663, 164, 55, 56, 915, 860, 645, 309,
+	57, 117, 58, 53, 54, 62, 63, 64, 65, 66,
+	67, 68, 70, 296, 51, 84, 52, 3, 433, 744,
 	670, 24, 76, 77, 0, 0, 0, 69, 46, 92,
 	93, 35, 0, 104, 0, 26, 0, 0, 0, 109,
 	25, 17, 16, 0, 18, 0, 29, 0, 30, 0,
@@ -1365,18 +1365,18 @@ var yyPact = [...]int{
 var yyPgo = [...]int{
 
 	0, 940, 939, 46, 686, 6, 938, 3, 937, 14,
-	27, 79, 77, 70, 51, 933, 921, 20, 919, 94,
-	15, 78, 918, 0, 62, 917, 912, 17, 11, 911,
-	910, 36, 61, 49, 33, 908, 35, 906, 72, 50,
-	904, 9, 903, 902, 896, 894, 13, 48, 889, 887,
-	111, 98, 197, 886, 883, 882, 8, 880, 81, 43,
-	877, 55, 47, 876, 875, 874, 867, 866, 97, 862,
-	861, 860, 38, 859, 10, 4, 857, 856, 42, 32,
-	41, 2, 16, 853, 851, 850, 5, 775, 849, 670,
-	848, 28, 847, 845, 842, 90, 841, 31, 839, 837,
-	25, 29, 835, 833, 832, 24, 819, 811, 809, 549,
-	804, 18, 802, 801, 44, 86, 83, 798, 103, 1,
-	7, 793, 19, 792, 790, 37, 12,
+	27, 79, 77, 70, 51, 933, 20, 921, 94, 15,
+	78, 919, 0, 62, 918, 917, 17, 11, 912, 911,
+	36, 61, 49, 33, 910, 35, 908, 72, 50, 906,
+	9, 904, 903, 902, 896, 13, 48, 894, 889, 111,
+	98, 197, 887, 886, 883, 8, 882, 81, 43, 880,
+	55, 47, 877, 876, 875, 874, 867, 97, 866, 862,
+	861, 38, 860, 10, 4, 859, 857, 42, 32, 41,
+	2, 16, 856, 853, 851, 5, 775, 850, 670, 849,
+	28, 848, 847, 845, 90, 842, 31, 841, 839, 25,
+	29, 837, 835, 833, 24, 832, 819, 811, 549, 809,
+	18, 804, 802, 44, 86, 83, 801, 103, 1, 7,
+	798, 19, 793, 792, 790, 37, 12,
 }
 var yyR1 = [...]int{
 
@@ -1387,48 +1387,48 @@ var yyR1 = [...]int{
 	5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
 	5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
 	5, 5, 5, 5, 5, 5, 5, 5, 5, 6,
-	6, 6, 6, 6, 6, 6, 7, 7, 118, 118,
-	91, 91, 9, 9, 9, 8, 8, 8, 8, 8,
-	8, 8, 8, 8, 8, 8, 8, 8, 8, 87,
-	87, 16, 16, 18, 18, 125, 125, 101, 101, 100,
-	100, 109, 109, 17, 17, 20, 20, 19, 19, 95,
-	95, 119, 119, 22, 22, 22, 22, 22, 22, 10,
+	6, 6, 6, 6, 6, 6, 7, 7, 117, 117,
+	90, 90, 9, 9, 9, 8, 8, 8, 8, 8,
+	8, 8, 8, 8, 8, 8, 8, 8, 8, 86,
+	86, 15, 15, 17, 17, 125, 125, 100, 100, 99,
+	99, 108, 108, 16, 16, 19, 19, 18, 18, 94,
+	94, 118, 118, 21, 21, 21, 21, 21, 21, 10,
 	10, 10, 10, 10, 10, 10, 10, 10, 10, 10,
 	10, 10, 10, 10, 10, 10, 10, 10, 10, 10,
-	10, 10, 10, 93, 93, 92, 92, 30, 30, 108,
-	108, 31, 11, 1, 1, 2, 2, 12, 12, 88,
-	88, 4, 4, 13, 14, 33, 33, 15, 15, 72,
-	72, 27, 27, 27, 27, 26, 26, 28, 28, 29,
-	29, 104, 104, 104, 104, 105, 105, 105, 126, 126,
-	25, 25, 73, 73, 70, 70, 76, 76, 71, 71,
-	120, 120, 121, 121, 34, 34, 35, 35, 82, 82,
-	80, 80, 80, 81, 81, 116, 116, 117, 117, 36,
-	36, 99, 99, 38, 103, 103, 39, 39, 122, 122,
-	40, 40, 40, 40, 75, 75, 107, 107, 107, 106,
-	106, 41, 41, 42, 43, 43, 43, 43, 45, 45,
-	44, 123, 123, 83, 83, 84, 84, 85, 85, 86,
-	86, 86, 86, 86, 86, 102, 102, 46, 46, 94,
-	94, 74, 21, 96, 96, 47, 97, 97, 98, 98,
-	49, 48, 48, 37, 37, 37, 37, 37, 37, 37,
-	37, 37, 37, 37, 37, 37, 37, 37, 37, 37,
-	37, 37, 37, 37, 37, 37, 37, 37, 37, 37,
-	37, 37, 37, 37, 37, 37, 37, 37, 37, 37,
-	37, 37, 37, 37, 37, 37, 37, 37, 37, 37,
-	37, 37, 37, 37, 37, 37, 37, 37, 37, 37,
-	37, 37, 37, 37, 37, 37, 37, 37, 37, 37,
-	37, 37, 37, 37, 37, 37, 37, 37, 37, 3,
-	3, 111, 111, 110, 110, 56, 56, 57, 57, 57,
-	57, 50, 50, 51, 51, 54, 54, 90, 90, 90,
-	115, 115, 61, 61, 61, 55, 55, 55, 55, 55,
-	55, 55, 55, 55, 55, 55, 55, 55, 55, 55,
-	55, 62, 62, 62, 23, 23, 24, 24, 60, 63,
-	63, 63, 64, 64, 64, 65, 65, 65, 65, 65,
-	65, 32, 32, 32, 52, 52, 52, 66, 66, 67,
-	67, 67, 67, 67, 67, 58, 58, 58, 59, 59,
-	59, 114, 78, 78, 113, 113, 77, 77, 77, 77,
-	77, 77, 89, 89, 89, 89, 68, 68, 68, 68,
-	68, 68, 68, 69, 69, 69, 69, 53, 53, 53,
-	53, 53, 53, 53, 112, 112, 79,
+	10, 10, 10, 92, 92, 91, 91, 29, 29, 107,
+	107, 30, 11, 1, 1, 2, 2, 12, 12, 87,
+	87, 4, 4, 13, 14, 32, 32, 123, 123, 71,
+	71, 26, 26, 26, 26, 25, 25, 27, 27, 28,
+	28, 103, 103, 103, 103, 104, 104, 104, 126, 126,
+	24, 24, 72, 72, 69, 69, 75, 75, 70, 70,
+	119, 119, 120, 120, 33, 33, 34, 34, 81, 81,
+	79, 79, 79, 80, 80, 115, 115, 116, 116, 35,
+	35, 98, 98, 37, 102, 102, 38, 38, 121, 121,
+	39, 39, 39, 39, 74, 74, 106, 106, 106, 105,
+	105, 40, 40, 41, 42, 42, 42, 42, 44, 44,
+	43, 122, 122, 82, 82, 83, 83, 84, 84, 85,
+	85, 85, 85, 85, 85, 101, 101, 45, 45, 93,
+	93, 73, 20, 95, 95, 46, 96, 96, 97, 97,
+	48, 47, 47, 36, 36, 36, 36, 36, 36, 36,
+	36, 36, 36, 36, 36, 36, 36, 36, 36, 36,
+	36, 36, 36, 36, 36, 36, 36, 36, 36, 36,
+	36, 36, 36, 36, 36, 36, 36, 36, 36, 36,
+	36, 36, 36, 36, 36, 36, 36, 36, 36, 36,
+	36, 36, 36, 36, 36, 36, 36, 36, 36, 36,
+	36, 36, 36, 36, 36, 36, 36, 36, 36, 36,
+	36, 36, 36, 36, 36, 36, 36, 36, 36, 3,
+	3, 110, 110, 109, 109, 55, 55, 56, 56, 56,
+	56, 49, 49, 50, 50, 53, 53, 89, 89, 89,
+	114, 114, 60, 60, 60, 54, 54, 54, 54, 54,
+	54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+	54, 61, 61, 61, 22, 22, 23, 23, 59, 62,
+	62, 62, 63, 63, 63, 64, 64, 64, 64, 64,
+	64, 31, 31, 31, 51, 51, 51, 65, 65, 66,
+	66, 66, 66, 66, 66, 57, 57, 57, 58, 58,
+	58, 113, 77, 77, 112, 112, 76, 76, 76, 76,
+	76, 76, 88, 88, 88, 88, 67, 67, 67, 67,
+	67, 67, 67, 68, 68, 68, 68, 52, 52, 52,
+	52, 52, 52, 52, 111, 111, 78,
 }
 var yyR2 = [...]int{
 
@@ -1484,98 +1484,98 @@ var yyR2 = [...]int{
 }
 var yyChk = [...]int{
 
-	-1000, -124, -118, -8, -10, -11, -12, -13, -14, 127,
-	154, 120, 114, 161, -70, -71, 97, 96, 99, 106,
-	110, 111, 115, 122, 76, 95, 90, -23, 124, 101,
-	103, 163, 116, 119, 112, 86, 113, -88, 128, 129,
-	130, -73, -76, -32, -37, -4, 83, -65, -66, -63,
+	-1000, -124, -117, -8, -10, -11, -12, -13, -14, 127,
+	154, 120, 114, 161, -69, -70, 97, 96, 99, 106,
+	110, 111, 115, 122, 76, 95, 90, -22, 124, 101,
+	103, 163, 116, 119, 112, 86, 113, -87, 128, 129,
+	130, -72, -75, -31, -36, -4, 83, -64, -65, -62,
 	134, 69, 71, 58, 59, 49, 50, 55, 57, 164,
-	-48, -53, 60, 61, 62, 63, 64, 65, 66, 82,
-	67, -55, 160, 13, 14, 16, 77, 78, -52, -62,
-	-57, -50, -60, -61, 70, 125, 126, 4, 5, 6,
+	-47, -52, 60, 61, 62, 63, 64, 65, 66, 82,
+	67, -54, 160, 13, 14, 16, 77, 78, -51, -61,
+	-56, -49, -59, -60, 70, 125, 126, 4, 5, 6,
 	7, 8, 84, 85, 141, 142, 156, 138, 139, 140,
-	155, 137, 149, 159, 88, 167, -9, -64, 135, 94,
-	-91, 157, 164, 157, -91, 161, 86, -18, -87, -109,
-	-91, 157, 113, 114, -19, -20, -95, -21, 86, -119,
-	164, -10, 113, 154, 164, 164, -24, -23, 76, -24,
-	-24, -99, -38, -52, -103, 113, -39, 88, -96, -47,
-	-23, 163, 33, 34, 10, 12, 11, 35, 37, 36,
+	155, 137, 149, 159, 88, 167, -9, -63, 135, 94,
+	-90, 157, 164, 157, -90, 161, 86, -17, -86, -108,
+	-90, 157, 113, 114, -18, -19, -94, -20, 86, -118,
+	164, -10, 113, 154, 164, 164, -23, -22, 76, -23,
+	-23, -98, -37, -51, -102, 113, -38, 88, -95, -46,
+	-22, 163, 33, 34, 10, 12, 11, 35, 37, 36,
 	51, 49, 50, 52, 68, 53, 54, 47, 48, 40,
 	41, 38, 39, 43, 44, 45, 46, 42, 56, 30,
-	32, 164, 164, 164, 161, -23, 86, 31, -3, 37,
+	32, 164, 164, 164, 161, -22, 86, 31, -3, 37,
 	128, -4, 86, 86, 86, 73, 74, 73, 75, 74,
 	17, 18, 19, 20, 29, 21, 22, 23, 24, 25,
 	26, 27, 28, 58, 59, 164, 69, 161, 133, 164,
-	-114, -113, -78, -77, -23, 37, 134, -23, -32, -62,
-	164, -61, 76, 69, -32, -23, -23, -23, -23, -23,
-	-23, -23, -23, -23, -23, -23, -23, -54, 164, -23,
-	-90, 93, -89, -68, 88, 151, 152, -23, -23, -23,
-	69, 153, 153, -51, -49, -50, -67, 128, -9, -52,
-	164, 164, -23, -23, 164, -23, -23, 93, 150, -89,
-	-89, 93, 161, -52, -116, 164, -116, 164, 157, -91,
-	165, -91, 163, 161, -118, 163, -16, -109, -91, 157,
-	163, 9, 157, 105, -91, -20, 163, 9, 17, -22,
-	162, -10, -11, -12, -13, -14, 127, -23, 97, -3,
-	-97, -98, -23, -23, 163, 163, 163, 163, 9, 163,
-	9, -3, 17, 163, 9, -23, -23, -23, -23, -23,
-	-23, -23, -23, -23, -23, -23, -23, -23, -23, -23,
-	-23, -23, -23, -23, -23, -23, -23, -23, -23, -23,
-	-23, -51, -23, 31, -23, -108, -31, -32, -23, -95,
-	-119, 163, 163, 86, 164, 86, -33, 131, 161, -15,
-	131, 164, -10, 164, 163, 31, -23, 37, -23, -23,
-	-23, -23, -23, -23, -23, -23, -23, -23, -23, -23,
-	-23, -24, -23, -59, 86, 161, -52, -114, 166, 9,
-	15, -32, 164, -23, -114, 165, -24, 160, -68, -68,
-	93, 69, 133, -23, 87, -32, 15, -24, -58, -7,
-	-52, 161, 86, -6, -5, 76, 77, 78, 79, 80,
+	-113, -112, -77, -76, -22, 37, 134, -22, -31, -61,
+	164, -60, 76, 69, -31, -22, -22, -22, -22, -22,
+	-22, -22, -22, -22, -22, -22, -22, -53, 164, -22,
+	-89, 93, -88, -67, 88, 151, 152, -22, -22, -22,
+	69, 153, 153, -50, -48, -49, -66, 128, -9, -51,
+	164, 164, -22, -22, 164, -22, -22, 93, 150, -88,
+	-88, 93, 161, -51, -115, 164, -115, 164, 157, -90,
+	165, -90, 163, 161, -117, 163, -15, -108, -90, 157,
+	163, 9, 157, 105, -90, -19, 163, 9, 17, -21,
+	162, -10, -11, -12, -13, -14, 127, -22, 97, -3,
+	-96, -97, -22, -22, 163, 163, 163, 163, 9, 163,
+	9, -3, 17, 163, 9, -22, -22, -22, -22, -22,
+	-22, -22, -22, -22, -22, -22, -22, -22, -22, -22,
+	-22, -22, -22, -22, -22, -22, -22, -22, -22, -22,
+	-22, -50, -22, 31, -22, -107, -30, -31, -22, -94,
+	-118, 163, 163, 86, 164, 86, -32, 131, 161, -123,
+	131, 164, -10, 164, 163, 31, -22, 37, -22, -22,
+	-22, -22, -22, -22, -22, -22, -22, -22, -22, -22,
+	-22, -23, -22, -58, 86, 161, -51, -113, 166, 9,
+	15, -31, 164, -22, -113, 165, -23, 160, -67, -67,
+	93, 69, 133, -22, 87, -31, 15, -23, -57, -7,
+	-51, 161, 86, -6, -5, 76, 77, 78, 79, 80,
 	81, 4, 5, 6, 7, 8, 10, 11, 12, 56,
 	70, 71, 82, 83, 73, 74, 75, 95, 96, 97,
 	98, 99, 100, 101, 102, 103, 104, 105, 116, 117,
 	118, 119, 120, 121, 122, 123, 124, 125, 126, 111,
 	112, 113, 114, 115, 13, 14, 134, 106, 107, 108,
 	109, 110, 135, 136, 131, 132, 154, 129, 130, 128,
-	137, 138, 140, 139, 141, 142, 156, 155, -58, -7,
-	-52, -115, -116, 153, 69, 161, 133, 153, -115, -112,
-	-79, -23, -23, -23, 150, 150, 159, -23, 165, -117,
-	-36, -23, 158, -114, 86, 163, -118, 162, 163, 163,
-	157, -91, -19, 157, -91, 161, 86, 157, -21, -23,
-	164, 165, 164, 163, 9, 165, -38, -39, 164, -23,
-	-47, 31, -23, -125, 9, 105, 165, 162, 164, -120,
-	-121, -34, -35, -82, -80, 30, 135, 136, -9, -33,
-	-72, 132, -9, -122, 161, -75, -9, -23, -23, -119,
-	-23, 165, 166, 162, -116, -23, 165, 17, -78, -23,
-	37, 134, -114, 165, 166, 165, -69, 86, 89, 50,
-	88, 86, 162, 162, 69, 162, -23, 166, -116, -23,
-	-116, -52, -24, -23, -59, -52, -33, -125, 9, 165,
-	165, 162, -125, 9, -23, 165, 162, 161, 157, -101,
-	-17, -20, -87, 161, 165, -25, -10, 31, -23, -97,
-	-23, -104, 161, 31, -120, -23, 165, -31, -27, -32,
-	37, 134, 69, -29, -10, 31, -93, -120, 165, 9,
-	-1, 37, -80, -72, 161, -75, 162, -40, -83, -84,
-	120, -85, 123, -86, 81, 80, 79, 76, 77, 78,
-	-122, 9, 165, 165, 75, -10, 31, 162, 17, -23,
-	-32, 164, 165, 166, 89, -23, 162, 166, 162, -72,
-	165, -79, 165, -36, -100, -20, 161, -125, 9, -20,
-	-101, 163, -119, 165, 163, -105, 163, -105, 163, 165,
-	163, 165, 15, -32, 164, -114, -119, -30, 117, 118,
-	165, -111, 120, -34, -2, 158, 161, -122, -102, -46,
-	88, 114, 113, -75, -86, 162, -9, -10, 31, 163,
-	-119, -23, -114, 166, 161, -125, 9, -100, 162, -17,
-	-125, 98, 163, -97, 162, 108, 109, -105, 107, -105,
-	-111, -28, -10, 31, -27, -114, 166, 104, 164, 161,
-	-81, 31, -81, 164, 88, -122, 162, 163, 9, 17,
-	-94, -74, -7, -3, -107, 163, 161, -119, 165, 162,
-	-122, 162, -20, -125, 162, 163, 165, -23, -126, 31,
-	163, 162, 163, 107, -81, -119, 165, 165, 163, -92,
-	-9, -119, 161, -82, 161, -110, -56, 88, 37, 17,
-	162, -46, -23, 163, 9, 17, -7, 162, -106, -41,
-	-42, -43, -44, -45, -9, -7, 154, 86, 162, 162,
-	-26, -10, 31, -126, -119, 163, 161, 102, -28, 88,
-	35, 162, -119, -119, 165, 9, 88, -23, -74, -23,
-	164, 162, -41, 163, 163, 121, 105, 153, -119, -119,
-	-119, 163, 165, -9, 162, 162, -56, -120, -75, 86,
-	-5, -86, -7, 100, 162, 161, 165, -7, 163, -119,
-	-81, 162, -123, 163, 161, -119, 162,
+	137, 138, 140, 139, 141, 142, 156, 155, -57, -7,
+	-51, -114, -115, 153, 69, 161, 133, 153, -114, -111,
+	-78, -22, -22, -22, 150, 150, 159, -22, 165, -116,
+	-35, -22, 158, -113, 86, 163, -117, 162, 163, 163,
+	157, -90, -18, 157, -90, 161, 86, 157, -20, -22,
+	164, 165, 164, 163, 9, 165, -37, -38, 164, -22,
+	-46, 31, -22, -125, 9, 105, 165, 162, 164, -119,
+	-120, -33, -34, -81, -79, 30, 135, 136, -9, -32,
+	-71, 132, -9, -121, 161, -74, -9, -22, -22, -118,
+	-22, 165, 166, 162, -115, -22, 165, 17, -77, -22,
+	37, 134, -113, 165, 166, 165, -68, 86, 89, 50,
+	88, 86, 162, 162, 69, 162, -22, 166, -115, -22,
+	-115, -51, -23, -22, -58, -51, -32, -125, 9, 165,
+	165, 162, -125, 9, -22, 165, 162, 161, 157, -100,
+	-16, -19, -86, 161, 165, -24, -10, 31, -22, -96,
+	-22, -103, 161, 31, -119, -22, 165, -30, -26, -31,
+	37, 134, 69, -28, -10, 31, -92, -119, 165, 9,
+	-1, 37, -79, -71, 161, -74, 162, -39, -82, -83,
+	120, -84, 123, -85, 81, 80, 79, 76, 77, 78,
+	-121, 9, 165, 165, 75, -10, 31, 162, 17, -22,
+	-31, 164, 165, 166, 89, -22, 162, 166, 162, -71,
+	165, -78, 165, -35, -99, -19, 161, -125, 9, -19,
+	-100, 163, -118, 165, 163, -104, 163, -104, 163, 165,
+	163, 165, 15, -31, 164, -113, -118, -29, 117, 118,
+	165, -110, 120, -33, -2, 158, 161, -121, -101, -45,
+	88, 114, 113, -74, -85, 162, -9, -10, 31, 163,
+	-118, -22, -113, 166, 161, -125, 9, -99, 162, -16,
+	-125, 98, 163, -96, 162, 108, 109, -104, 107, -104,
+	-110, -27, -10, 31, -26, -113, 166, 104, 164, 161,
+	-80, 31, -80, 164, 88, -121, 162, 163, 9, 17,
+	-93, -73, -7, -3, -106, 163, 161, -118, 165, 162,
+	-121, 162, -19, -125, 162, 163, 165, -22, -126, 31,
+	163, 162, 163, 107, -80, -118, 165, 165, 163, -91,
+	-9, -118, 161, -81, 161, -109, -55, 88, 37, 17,
+	162, -45, -22, 163, 9, 17, -7, 162, -105, -40,
+	-41, -42, -43, -44, -9, -7, 154, 86, 162, 162,
+	-25, -10, 31, -126, -118, 163, 161, 102, -27, 88,
+	35, 162, -118, -118, 165, 9, 88, -22, -73, -22,
+	164, 162, -40, 163, 163, 121, 105, 153, -118, -118,
+	-118, 163, 165, -9, 162, 162, -55, -119, -74, 86,
+	-5, -85, -7, 100, 162, 161, 165, -7, 163, -118,
+	-80, 162, -122, 163, 161, -118, 162,
 }
 var yyDef = [...]int{
 
@@ -2638,7 +2638,7 @@ yydefault:
 		yyDollar = yyS[yypt-1 : yypt+1]
 		//line parser/parser.y:295
 		{
-			yyVAL.node = node.NewSimpleNode("FuncUseType")
+			yyVAL.node = node.NewIdentifier(yyDollar[1].token)
 		}
 	case 100:
 		yyDollar = yyS[yypt-1 : yypt+1]
@@ -3078,7 +3078,7 @@ yydefault:
 		yyDollar = yyS[yypt-6 : yypt+1]
 		//line parser/parser.y:476
 		{
-			yyVAL.node = stmt.NewInterface(yyDollar[1].token, yyDollar[2].token, yyDollar[3].node, yyDollar[5].list)
+			yyVAL.node = stmt.NewInterface(yyDollar[1].token, yyDollar[2].token, yyDollar[3].list, yyDollar[5].list)
 		}
 	case 175:
 		yyDollar = yyS[yypt-0 : yypt+1]
@@ -3096,13 +3096,13 @@ yydefault:
 		yyDollar = yyS[yypt-0 : yypt+1]
 		//line parser/parser.y:485
 		{
-			yyVAL.node = nil
+			yyVAL.list = nil
 		}
 	case 178:
 		yyDollar = yyS[yypt-2 : yypt+1]
 		//line parser/parser.y:486
 		{
-			yyVAL.node = yyDollar[2].node
+			yyVAL.list = yyDollar[2].node.(node.SimpleNode).Children
 		}
 	case 179:
 		yyDollar = yyS[yypt-0 : yypt+1]
diff --git a/parser/parser.y b/parser/parser.y
index 85dbf2e..c3dce11 100644
--- a/parser/parser.y
+++ b/parser/parser.y
@@ -192,7 +192,7 @@ func Parse(src io.Reader, fName string) node.Node {
 
 %type <node> top_statement name statement function_declaration_statement
 %type <node> class_declaration_statement trait_declaration_statement
-%type <node> interface_declaration_statement interface_extends_list
+%type <node> interface_declaration_statement
 %type <node> group_use_declaration inline_use_declaration
 %type <node> mixed_group_use_declaration use_declaration unprefixed_use_declaration
 %type <node> const_decl inner_statement
@@ -227,7 +227,7 @@ func Parse(src io.Reader, fName string) node.Node {
 %type <list> use_declarations lexical_var_list lexical_vars isset_variables non_empty_array_pair_list
 %type <list> array_pair_list ctor_arguments argument_list non_empty_argument_list top_statement_list
 %type <list> inner_statement_list parameter_list non_empty_parameter_list class_statement_list
-%type <list> method_body
+%type <list> method_body interface_extends_list
 
 %%
 
@@ -292,7 +292,7 @@ top_statement:
 ;
 
 use_type:
-        T_FUNCTION                                      { $$ = node.NewSimpleNode("FuncUseType"); }
+        T_FUNCTION                                      { $$ = node.NewIdentifier($1) }
     |   T_CONST                                         { $$ = node.NewSimpleNode("ConstUseType"); }
 ;
 
@@ -483,7 +483,7 @@ extends_from:
 
 interface_extends_list:
         /* empty */                                     { $$ = nil }
-    |   T_EXTENDS name_list                             { $$ = $2; }
+    |   T_EXTENDS name_list                             { $$ = $2.(node.SimpleNode).Children }
 ;
 
 implements_list: