diff --git a/src/parser/xhpast/__tests__/data/anonymous_class.php.test b/src/parser/xhpast/__tests__/data/anonymous_class.php.test
index 7b0b4a3e..83ee6b00 100644
--- a/src/parser/xhpast/__tests__/data/anonymous_class.php.test
+++ b/src/parser/xhpast/__tests__/data/anonymous_class.php.test
@@ -1,595 +1,132 @@
 <?php
 
 $a = new class {};
 $b = new class(10) extends c implements d {
   private $num;
 
   public function __construct($num) {
     $this->num = $num;
   }
 };
 ~~~~~~~~~~
 pass
 ~~~~~~~~~~
-{
-  "tree": [
-    9000,
-    0,
-    64,
-    [
-      [
-        9006,
-        0,
-        63,
-        [
-          [
-            9007,
-            0,
-            0
-          ],
-          [
-            9004,
-            2,
-            12,
-            [
-              [
-                9077,
-                2,
-                11,
-                [
-                  [
-                    9047,
-                    2,
-                    2
-                  ],
-                  [
-                    9081,
-                    4,
-                    4
-                  ],
-                  [
-                    9074,
-                    6,
-                    11,
-                    [
-                      [
-                        9051,
-                        10,
-                        11,
-                        [
-                          [
-                            9005
-                          ],
-                          [
-                            9005
-                          ],
-                          [
-                            9005
-                          ],
-                          [
-                            9005
-                          ],
-                          [
-                            9006,
-                            10,
-                            11
-                          ]
-                        ]
-                      ],
-                      [
-                        9005
-                      ]
-                    ]
-                  ]
-                ]
-              ]
-            ]
-          ],
-          [
-            9004,
-            14,
-            63,
-            [
-              [
-                9077,
-                14,
-                62,
-                [
-                  [
-                    9047,
-                    14,
-                    14
-                  ],
-                  [
-                    9081,
-                    16,
-                    16
-                  ],
-                  [
-                    9074,
-                    18,
-                    62,
-                    [
-                      [
-                        9051,
-                        25,
-                        62,
-                        [
-                          [
-                            9005
-                          ],
-                          [
-                            9005
-                          ],
-                          [
-                            9054,
-                            25,
-                            27,
-                            [
-                              [
-                                9090,
-                                27,
-                                27
-                              ]
-                            ]
-                          ],
-                          [
-                            9055,
-                            29,
-                            31,
-                            [
-                              [
-                                9090,
-                                31,
-                                31
-                              ]
-                            ]
-                          ],
-                          [
-                            9006,
-                            33,
-                            62,
-                            [
-                              [
-                                9004,
-                                35,
-                                38,
-                                [
-                                  [
-                                    9063,
-                                    35,
-                                    37,
-                                    [
-                                      [
-                                        9070,
-                                        35,
-                                        35,
-                                        [
-                                          [
-                                            9013,
-                                            35,
-                                            35
-                                          ]
-                                        ]
-                                      ],
-                                      [
-                                        9064,
-                                        37,
-                                        37,
-                                        [
-                                          [
-                                            9047,
-                                            37,
-                                            37
-                                          ],
-                                          [
-                                            9005
-                                          ]
-                                        ]
-                                      ]
-                                    ]
-                                  ]
-                                ]
-                              ],
-                              [
-                                9004,
-                                40,
-                                60,
-                                [
-                                  [
-                                    9067,
-                                    40,
-                                    60,
-                                    [
-                                      [
-                                        9068,
-                                        40,
-                                        40,
-                                        [
-                                          [
-                                            9013,
-                                            40,
-                                            40
-                                          ]
-                                        ]
-                                      ],
-                                      [
-                                        9005
-                                      ],
-                                      [
-                                        9013,
-                                        44,
-                                        44
-                                      ],
-                                      [
-                                        9059,
-                                        45,
-                                        47,
-                                        [
-                                          [
-                                            9060,
-                                            46,
-                                            46,
-                                            [
-                                              [
-                                                9005
-                                              ],
-                                              [
-                                                9047,
-                                                46,
-                                                46
-                                              ],
-                                              [
-                                                9005
-                                              ]
-                                            ]
-                                          ]
-                                        ]
-                                      ],
-                                      [
-                                        9005
-                                      ],
-                                      [
-                                        9005
-                                      ],
-                                      [
-                                        9006,
-                                        49,
-                                        60,
-                                        [
-                                          [
-                                            9004,
-                                            51,
-                                            58,
-                                            [
-                                              [
-                                                9077,
-                                                51,
-                                                57,
-                                                [
-                                                  [
-                                                    9092,
-                                                    51,
-                                                    53,
-                                                    [
-                                                      [
-                                                        9047,
-                                                        51,
-                                                        51
-                                                      ],
-                                                      [
-                                                        9013,
-                                                        53,
-                                                        53
-                                                      ]
-                                                    ]
-                                                  ],
-                                                  [
-                                                    9081,
-                                                    55,
-                                                    55
-                                                  ],
-                                                  [
-                                                    9047,
-                                                    57,
-                                                    57
-                                                  ]
-                                                ]
-                                              ]
-                                            ]
-                                          ]
-                                        ]
-                                      ]
-                                    ]
-                                  ]
-                                ]
-                              ]
-                            ]
-                          ]
-                        ]
-                      ],
-                      [
-                        9095,
-                        21,
-                        23,
-                        [
-                          [
-                            9086,
-                            22,
-                            22
-                          ]
-                        ]
-                      ]
-                    ]
-                  ]
-                ]
-              ]
-            ]
-          ]
-        ]
-      ]
-    ]
-  ],
-  "stream": [
-    [
-      373,
-      5
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      313,
-      2
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      61,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      302,
-      3
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      358,
-      5
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      313,
-      2
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      61,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      302,
-      3
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      358,
-      5
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      309,
-      2
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      360,
-      7
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      361,
-      10
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      377,
-      3
-    ],
-    [
-      350,
-      7
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      313,
-      4
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      4
-    ],
-    [
-      352,
-      6
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      339,
-      8
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      11
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      313,
-      4
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      377,
-      5
-    ],
-    [
-      313,
-      5
-    ],
-    [
-      362,
-      2
-    ],
-    [
-      311,
-      3
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      61,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      313,
-      4
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      3
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      1
-    ]
-  ]
-}
+* n_PROGRAM
+ * n_STATEMENT_LIST
+  * n_OPEN_TAG
+   > <?php
+  > "\n\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $a
+    > " "
+    * n_OPERATOR
+     > =
+    > " "
+    * n_NEW
+     > new
+     > " "
+     > class
+     > " "
+     * n_CLASS_DECLARATION
+      * n_EMPTY
+      * n_EMPTY
+      * n_EMPTY
+      * n_EMPTY
+      * n_STATEMENT_LIST
+       > {
+       > }
+     * n_EMPTY
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $b
+    > " "
+    * n_OPERATOR
+     > =
+    > " "
+    * n_NEW
+     > new
+     > " "
+     > class
+     > " "
+     * n_CLASS_DECLARATION
+      * n_EMPTY
+      * n_EMPTY
+      * n_EXTENDS_LIST
+       > extends
+       > " "
+       * n_CLASS_NAME
+        > c
+      > " "
+      * n_IMPLEMENTS_LIST
+       > implements
+       > " "
+       * n_CLASS_NAME
+        > d
+      > " "
+      * n_STATEMENT_LIST
+       > {
+       > "\n  "
+       * n_STATEMENT
+        * n_CLASS_MEMBER_DECLARATION_LIST
+         * n_CLASS_MEMBER_MODIFIER_LIST
+          * n_STRING
+           > private
+         > " "
+         * n_CLASS_MEMBER_DECLARATION
+          * n_VARIABLE
+           > $num
+          * n_EMPTY
+        > ;
+       > "\n\n  "
+       * n_STATEMENT
+        * n_METHOD_DECLARATION
+         * n_METHOD_MODIFIER_LIST
+          * n_STRING
+           > public
+         * n_EMPTY
+         * n_STRING
+          > __construct
+         * n_DECLARATION_PARAMETER_LIST
+          > (
+          * n_DECLARATION_PARAMETER
+           * n_EMPTY
+           * n_VARIABLE
+            > $num
+           * n_EMPTY
+          > )
+         * n_EMPTY
+         * n_EMPTY
+         * n_STATEMENT_LIST
+          > {
+          > "\n    "
+          * n_STATEMENT
+           * n_BINARY_EXPRESSION
+            * n_OBJECT_PROPERTY_ACCESS
+             * n_VARIABLE
+              > $this
+             > ->
+             * n_STRING
+              > num
+            > " "
+            * n_OPERATOR
+             > =
+            > " "
+            * n_VARIABLE
+             > $num
+           > ;
+          > "\n  "
+          > }
+       > "\n"
+       > }
+     * n_CALL_PARAMETER_LIST
+      > (
+      * n_NUMERIC_SCALAR
+       > 10
+      > )
+   > ;
+ > "\n"
diff --git a/src/parser/xhpast/__tests__/data/base-pass.php.test b/src/parser/xhpast/__tests__/data/base-pass.php.test
index 75b47c06..15097044 100644
--- a/src/parser/xhpast/__tests__/data/base-pass.php.test
+++ b/src/parser/xhpast/__tests__/data/base-pass.php.test
@@ -1,35 +1,9 @@
 <?php
 ~~~~~~~~~~
 pass
 ~~~~~~~~~~
-{
-  "tree": [
-    9000,
-    0,
-    1,
-    [
-      [
-        9006,
-        0,
-        0,
-        [
-          [
-            9007,
-            0,
-            0
-          ]
-        ]
-      ]
-    ]
-  ],
-  "stream": [
-    [
-      373,
-      5
-    ],
-    [
-      377,
-      1
-    ]
-  ]
-}
+* n_PROGRAM
+ * n_STATEMENT_LIST
+  * n_OPEN_TAG
+   > <?php
+ > "\n"
diff --git a/src/parser/xhpast/__tests__/data/call-time-pass-by-ref.php.test b/src/parser/xhpast/__tests__/data/call-time-pass-by-ref.php.test
index e8a92fc7..a924b320 100644
--- a/src/parser/xhpast/__tests__/data/call-time-pass-by-ref.php.test
+++ b/src/parser/xhpast/__tests__/data/call-time-pass-by-ref.php.test
@@ -1,101 +1,22 @@
 <?php f(&$v);
 ~~~~~~~~~~
 pass
 ~~~~~~~~~~
-{
-  "tree": [
-    9000,
-    0,
-    8,
-    [
-      [
-        9006,
-        0,
-        7,
-        [
-          [
-            9007,
-            0,
-            0
-          ],
-          [
-            9004,
-            2,
-            7,
-            [
-              [
-                9099,
-                2,
-                6,
-                [
-                  [
-                    9001,
-                    2,
-                    2
-                  ],
-                  [
-                    9095,
-                    3,
-                    6,
-                    [
-                      [
-                        9049,
-                        4,
-                        5,
-                        [
-                          [
-                            9047,
-                            5,
-                            5
-                          ]
-                        ]
-                      ]
-                    ]
-                  ]
-                ]
-              ]
-            ]
-          ]
-        ]
-      ]
-    ]
-  ],
-  "stream": [
-    [
-      373,
-      5
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      38,
-      1
-    ],
-    [
-      313,
-      2
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      1
-    ]
-  ]
-}
+* n_PROGRAM
+ * n_STATEMENT_LIST
+  * n_OPEN_TAG
+   > <?php
+  > " "
+  * n_STATEMENT
+   * n_FUNCTION_CALL
+    * n_SYMBOL_NAME
+     > f
+    * n_CALL_PARAMETER_LIST
+     > (
+     * n_VARIABLE_REFERENCE
+      > &
+      * n_VARIABLE
+       > $v
+     > )
+   > ;
+ > "\n"
diff --git a/src/parser/xhpast/__tests__/data/namespace.php.test b/src/parser/xhpast/__tests__/data/namespace.php.test
index d19a45d5..b1de0e24 100644
--- a/src/parser/xhpast/__tests__/data/namespace.php.test
+++ b/src/parser/xhpast/__tests__/data/namespace.php.test
@@ -1,400 +1,93 @@
 <?php
 
 namespace A;
 
 class B {}
 
 namespace A\B\C {
   class D {}
 }
 
 namespace {
   class A {}
 }
 ~~~~~~~~~~
 pass
 ~~~~~~~~~~
-{
-  "tree": [
-    9000,
-    0,
-    45,
-    [
-      [
-        9006,
-        0,
-        44,
-        [
-          [
-            9007,
-            0,
-            0
-          ],
-          [
-            9004,
-            2,
-            5,
-            [
-              [
-                9003,
-                2,
-                4,
-                [
-                  [
-                    9001,
-                    4,
-                    4
-                  ],
-                  [
-                    9005
-                  ]
-                ]
-              ]
-            ]
-          ],
-          [
-            9004,
-            7,
-            12,
-            [
-              [
-                9051,
-                7,
-                12,
-                [
-                  [
-                    9052,
-                    7,
-                    7
-                  ],
-                  [
-                    9090,
-                    9,
-                    9
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9006,
-                    11,
-                    12
-                  ]
-                ]
-              ]
-            ]
-          ],
-          [
-            9004,
-            14,
-            31,
-            [
-              [
-                9003,
-                14,
-                31,
-                [
-                  [
-                    9001,
-                    16,
-                    20
-                  ],
-                  [
-                    9006,
-                    22,
-                    31,
-                    [
-                      [
-                        9004,
-                        24,
-                        29,
-                        [
-                          [
-                            9051,
-                            24,
-                            29,
-                            [
-                              [
-                                9052,
-                                24,
-                                24
-                              ],
-                              [
-                                9090,
-                                26,
-                                26
-                              ],
-                              [
-                                9005
-                              ],
-                              [
-                                9005
-                              ],
-                              [
-                                9006,
-                                28,
-                                29
-                              ]
-                            ]
-                          ]
-                        ]
-                      ]
-                    ]
-                  ]
-                ]
-              ]
-            ]
-          ],
-          [
-            9004,
-            33,
-            44,
-            [
-              [
-                9003,
-                33,
-                44,
-                [
-                  [
-                    9005
-                  ],
-                  [
-                    9006,
-                    35,
-                    44,
-                    [
-                      [
-                        9004,
-                        37,
-                        42,
-                        [
-                          [
-                            9051,
-                            37,
-                            42,
-                            [
-                              [
-                                9052,
-                                37,
-                                37
-                              ],
-                              [
-                                9090,
-                                39,
-                                39
-                              ],
-                              [
-                                9005
-                              ],
-                              [
-                                9005
-                              ],
-                              [
-                                9006,
-                                41,
-                                42
-                              ]
-                            ]
-                          ]
-                        ]
-                      ]
-                    ]
-                  ]
-                ]
-              ]
-            ]
-          ]
-        ]
-      ]
-    ]
-  ],
-  "stream": [
-    [
-      373,
-      5
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      386,
-      9
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      358,
-      5
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      386,
-      9
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      389,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      389,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      377,
-      3
-    ],
-    [
-      358,
-      5
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      386,
-      9
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      377,
-      3
-    ],
-    [
-      358,
-      5
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      1
-    ]
-  ]
-}
+* n_PROGRAM
+ * n_STATEMENT_LIST
+  * n_OPEN_TAG
+   > <?php
+  > "\n\n"
+  * n_STATEMENT
+   * n_NAMESPACE
+    > namespace
+    > " "
+    * n_SYMBOL_NAME
+     > A
+    * n_EMPTY
+   > ;
+  > "\n\n"
+  * n_STATEMENT
+   * n_CLASS_DECLARATION
+    * n_CLASS_ATTRIBUTES
+     > class
+    > " "
+    * n_CLASS_NAME
+     > B
+    * n_EMPTY
+    * n_EMPTY
+    * n_STATEMENT_LIST
+     > {
+     > }
+  > "\n\n"
+  * n_STATEMENT
+   * n_NAMESPACE
+    > namespace
+    > " "
+    * n_SYMBOL_NAME
+     > A
+     > "\"
+     > B
+     > "\"
+     > C
+    > " "
+    * n_STATEMENT_LIST
+     > {
+     > "\n  "
+     * n_STATEMENT
+      * n_CLASS_DECLARATION
+       * n_CLASS_ATTRIBUTES
+        > class
+       > " "
+       * n_CLASS_NAME
+        > D
+       * n_EMPTY
+       * n_EMPTY
+       * n_STATEMENT_LIST
+        > {
+        > }
+     > "\n"
+     > }
+  > "\n\n"
+  * n_STATEMENT
+   * n_NAMESPACE
+    * n_EMPTY
+    * n_STATEMENT_LIST
+     > {
+     > "\n  "
+     * n_STATEMENT
+      * n_CLASS_DECLARATION
+       * n_CLASS_ATTRIBUTES
+        > class
+       > " "
+       * n_CLASS_NAME
+        > A
+       * n_EMPTY
+       * n_EMPTY
+       * n_STATEMENT_LIST
+        > {
+        > }
+     > "\n"
+     > }
+ > "\n"
diff --git a/src/parser/xhpast/__tests__/data/operator-coalesce.php.test b/src/parser/xhpast/__tests__/data/operator-coalesce.php.test
index 59e02433..73981b5a 100644
--- a/src/parser/xhpast/__tests__/data/operator-coalesce.php.test
+++ b/src/parser/xhpast/__tests__/data/operator-coalesce.php.test
@@ -1,126 +1,29 @@
 <?php
 1 ?? 2 ?? 3;
 ~~~~~~~~~~
 pass
 ~~~~~~~~~~
-{
-  "tree": [
-    9000,
-    0,
-    12,
-    [
-      [
-        9006,
-        0,
-        11,
-        [
-          [
-            9007,
-            0,
-            0
-          ],
-          [
-            9004,
-            2,
-            11,
-            [
-              [
-                9077,
-                2,
-                10,
-                [
-                  [
-                    9086,
-                    2,
-                    2
-                  ],
-                  [
-                    9081,
-                    4,
-                    4
-                  ],
-                  [
-                    9077,
-                    6,
-                    10,
-                    [
-                      [
-                        9086,
-                        6,
-                        6
-                      ],
-                      [
-                        9081,
-                        8,
-                        8
-                      ],
-                      [
-                        9086,
-                        10,
-                        10
-                      ]
-                    ]
-                  ]
-                ]
-              ]
-            ]
-          ]
-        ]
-      ]
-    ]
-  ],
-  "stream": [
-    [
-      373,
-      5
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      309,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      278,
-      2
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      309,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      278,
-      2
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      309,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      1
-    ]
-  ]
-}
+* n_PROGRAM
+ * n_STATEMENT_LIST
+  * n_OPEN_TAG
+   > <?php
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_NUMERIC_SCALAR
+     > 1
+    > " "
+    * n_OPERATOR
+     > ??
+    > " "
+    * n_BINARY_EXPRESSION
+     * n_NUMERIC_SCALAR
+      > 2
+     > " "
+     * n_OPERATOR
+      > ??
+     > " "
+     * n_NUMERIC_SCALAR
+      > 3
+   > ;
+ > "\n"
diff --git a/src/parser/xhpast/__tests__/data/operator-spaceship.php.test b/src/parser/xhpast/__tests__/data/operator-spaceship.php.test
index 7ba45bc5..5c2d2e58 100644
--- a/src/parser/xhpast/__tests__/data/operator-spaceship.php.test
+++ b/src/parser/xhpast/__tests__/data/operator-spaceship.php.test
@@ -1,93 +1,22 @@
 <?php
 1 <=> 2;
 ~~~~~~~~~~
 pass
 ~~~~~~~~~~
-{
-  "tree": [
-    9000,
-    0,
-    8,
-    [
-      [
-        9006,
-        0,
-        7,
-        [
-          [
-            9007,
-            0,
-            0
-          ],
-          [
-            9004,
-            2,
-            7,
-            [
-              [
-                9077,
-                2,
-                6,
-                [
-                  [
-                    9086,
-                    2,
-                    2
-                  ],
-                  [
-                    9081,
-                    4,
-                    4
-                  ],
-                  [
-                    9086,
-                    6,
-                    6
-                  ]
-                ]
-              ]
-            ]
-          ]
-        ]
-      ]
-    ]
-  ],
-  "stream": [
-    [
-      373,
-      5
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      309,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      285,
-      3
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      309,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      1
-    ]
-  ]
-}
+* n_PROGRAM
+ * n_STATEMENT_LIST
+  * n_OPEN_TAG
+   > <?php
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_NUMERIC_SCALAR
+     > 1
+    > " "
+    * n_OPERATOR
+     > <=>
+    > " "
+    * n_NUMERIC_SCALAR
+     > 2
+   > ;
+ > "\n"
diff --git a/src/parser/xhpast/__tests__/data/optional-parameter.php.test b/src/parser/xhpast/__tests__/data/optional-parameter.php.test
index 5d032b7f..16ea4751 100644
--- a/src/parser/xhpast/__tests__/data/optional-parameter.php.test
+++ b/src/parser/xhpast/__tests__/data/optional-parameter.php.test
@@ -1,282 +1,60 @@
 <?php
 
 function a(?int $x) {}
 function b(?SomeClass $x) {}
 ~~~~~~~~~~
 pass
 ~~~~~~~~~~
-{
-  "tree": [
-    9000,
-    0,
-    27,
-    [
-      [
-        9006,
-        0,
-        26,
-        [
-          [
-            9007,
-            0,
-            0
-          ],
-          [
-            9004,
-            2,
-            13,
-            [
-              [
-                9050,
-                2,
-                13,
-                [
-                  [
-                    9005
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9013,
-                    4,
-                    4
-                  ],
-                  [
-                    9059,
-                    5,
-                    10,
-                    [
-                      [
-                        9060,
-                        7,
-                        9,
-                        [
-                          [
-                            9116,
-                            7,
-                            7,
-                            [
-                              [
-                                9090,
-                                7,
-                                7
-                              ]
-                            ]
-                          ],
-                          [
-                            9047,
-                            9,
-                            9
-                          ],
-                          [
-                            9005
-                          ]
-                        ]
-                      ]
-                    ]
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9006,
-                    12,
-                    13
-                  ]
-                ]
-              ]
-            ]
-          ],
-          [
-            9004,
-            15,
-            26,
-            [
-              [
-                9050,
-                15,
-                26,
-                [
-                  [
-                    9005
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9013,
-                    17,
-                    17
-                  ],
-                  [
-                    9059,
-                    18,
-                    23,
-                    [
-                      [
-                        9060,
-                        20,
-                        22,
-                        [
-                          [
-                            9116,
-                            20,
-                            20,
-                            [
-                              [
-                                9090,
-                                20,
-                                20
-                              ]
-                            ]
-                          ],
-                          [
-                            9047,
-                            22,
-                            22
-                          ],
-                          [
-                            9005
-                          ]
-                        ]
-                      ]
-                    ]
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9006,
-                    25,
-                    26
-                  ]
-                ]
-              ]
-            ]
-          ]
-        ]
-      ]
-    ]
-  ],
-  "stream": [
-    [
-      373,
-      5
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      339,
-      8
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      63,
-      1
-    ],
-    [
-      311,
-      3
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      313,
-      2
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      339,
-      8
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      63,
-      1
-    ],
-    [
-      311,
-      9
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      313,
-      2
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      1
-    ]
-  ]
-}
+* n_PROGRAM
+ * n_STATEMENT_LIST
+  * n_OPEN_TAG
+   > <?php
+  > "\n\n"
+  * n_STATEMENT
+   * n_FUNCTION_DECLARATION
+    * n_EMPTY
+    * n_EMPTY
+    * n_STRING
+     > a
+    * n_DECLARATION_PARAMETER_LIST
+     > (
+     > ?
+     * n_DECLARATION_PARAMETER
+      * n_NULLABLE_TYPE
+       * n_CLASS_NAME
+        > int
+      > " "
+      * n_VARIABLE
+       > $x
+      * n_EMPTY
+     > )
+    * n_EMPTY
+    * n_EMPTY
+    * n_STATEMENT_LIST
+     > {
+     > }
+  > "\n"
+  * n_STATEMENT
+   * n_FUNCTION_DECLARATION
+    * n_EMPTY
+    * n_EMPTY
+    * n_STRING
+     > b
+    * n_DECLARATION_PARAMETER_LIST
+     > (
+     > ?
+     * n_DECLARATION_PARAMETER
+      * n_NULLABLE_TYPE
+       * n_CLASS_NAME
+        > SomeClass
+      > " "
+      * n_VARIABLE
+       > $x
+      * n_EMPTY
+     > )
+    * n_EMPTY
+    * n_EMPTY
+    * n_STATEMENT_LIST
+     > {
+     > }
+ > "\n"
diff --git a/src/parser/xhpast/__tests__/data/php-access-on-instanciation.test b/src/parser/xhpast/__tests__/data/php-access-on-instanciation.test
index d123e7f3..580fa60d 100644
--- a/src/parser/xhpast/__tests__/data/php-access-on-instanciation.test
+++ b/src/parser/xhpast/__tests__/data/php-access-on-instanciation.test
@@ -1,663 +1,145 @@
 <?php
 
 class a {
  public $b;
 
  public function c() { }
 }
 
 $d = (new a)->b;
 
 $e = (new a)->c();
 
 (new a)->b;
 
 (new a)->c();
 ~~~~~~~~~~
 pass
 ~~~~~~~~~~
-{
-  "tree": [
-    9000,
-    0,
-    74,
-    [
-      [
-        9006,
-        0,
-        73,
-        [
-          [
-            9007,
-            0,
-            0
-          ],
-          [
-            9004,
-            2,
-            25,
-            [
-              [
-                9051,
-                2,
-                25,
-                [
-                  [
-                    9052,
-                    2,
-                    2
-                  ],
-                  [
-                    9090,
-                    4,
-                    4
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9006,
-                    6,
-                    25,
-                    [
-                      [
-                        9004,
-                        8,
-                        11,
-                        [
-                          [
-                            9063,
-                            8,
-                            10,
-                            [
-                              [
-                                9070,
-                                8,
-                                8,
-                                [
-                                  [
-                                    9013,
-                                    8,
-                                    8
-                                  ]
-                                ]
-                              ],
-                              [
-                                9064,
-                                10,
-                                10,
-                                [
-                                  [
-                                    9047,
-                                    10,
-                                    10
-                                  ],
-                                  [
-                                    9005
-                                  ]
-                                ]
-                              ]
-                            ]
-                          ]
-                        ]
-                      ],
-                      [
-                        9004,
-                        13,
-                        23,
-                        [
-                          [
-                            9067,
-                            13,
-                            23,
-                            [
-                              [
-                                9068,
-                                13,
-                                13,
-                                [
-                                  [
-                                    9013,
-                                    13,
-                                    13
-                                  ]
-                                ]
-                              ],
-                              [
-                                9005
-                              ],
-                              [
-                                9013,
-                                17,
-                                17
-                              ],
-                              [
-                                9059,
-                                18,
-                                19
-                              ],
-                              [
-                                9005
-                              ],
-                              [
-                                9005
-                              ],
-                              [
-                                9006,
-                                21,
-                                23
-                              ]
-                            ]
-                          ]
-                        ]
-                      ]
-                    ]
-                  ]
-                ]
-              ]
-            ]
-          ],
-          [
-            9004,
-            27,
-            38,
-            [
-              [
-                9077,
-                27,
-                37,
-                [
-                  [
-                    9047,
-                    27,
-                    27
-                  ],
-                  [
-                    9081,
-                    29,
-                    29
-                  ],
-                  [
-                    9092,
-                    31,
-                    37,
-                    [
-                      [
-                        9074,
-                        31,
-                        35,
-                        [
-                          [
-                            9090,
-                            34,
-                            34
-                          ],
-                          [
-                            9005
-                          ]
-                        ]
-                      ],
-                      [
-                        9013,
-                        37,
-                        37
-                      ]
-                    ]
-                  ]
-                ]
-              ]
-            ]
-          ],
-          [
-            9004,
-            40,
-            53,
-            [
-              [
-                9077,
-                40,
-                52,
-                [
-                  [
-                    9047,
-                    40,
-                    40
-                  ],
-                  [
-                    9081,
-                    42,
-                    42
-                  ],
-                  [
-                    9102,
-                    44,
-                    52,
-                    [
-                      [
-                        9092,
-                        44,
-                        50,
-                        [
-                          [
-                            9074,
-                            44,
-                            48,
-                            [
-                              [
-                                9090,
-                                47,
-                                47
-                              ],
-                              [
-                                9005
-                              ]
-                            ]
-                          ],
-                          [
-                            9013,
-                            50,
-                            50
-                          ]
-                        ]
-                      ],
-                      [
-                        9095,
-                        51,
-                        52
-                      ]
-                    ]
-                  ]
-                ]
-              ]
-            ]
-          ],
-          [
-            9004,
-            55,
-            62,
-            [
-              [
-                9092,
-                55,
-                61,
-                [
-                  [
-                    9074,
-                    55,
-                    59,
-                    [
-                      [
-                        9090,
-                        58,
-                        58
-                      ],
-                      [
-                        9005
-                      ]
-                    ]
-                  ],
-                  [
-                    9013,
-                    61,
-                    61
-                  ]
-                ]
-              ]
-            ]
-          ],
-          [
-            9004,
-            64,
-            73,
-            [
-              [
-                9102,
-                64,
-                72,
-                [
-                  [
-                    9092,
-                    64,
-                    70,
-                    [
-                      [
-                        9074,
-                        64,
-                        68,
-                        [
-                          [
-                            9090,
-                            67,
-                            67
-                          ],
-                          [
-                            9005
-                          ]
-                        ]
-                      ],
-                      [
-                        9013,
-                        70,
-                        70
-                      ]
-                    ]
-                  ],
-                  [
-                    9095,
-                    71,
-                    72
-                  ]
-                ]
-              ]
-            ]
-          ]
-        ]
-      ]
-    ]
-  ],
-  "stream": [
-    [
-      373,
-      5
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      358,
-      5
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      352,
-      6
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      313,
-      2
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      3
-    ],
-    [
-      352,
-      6
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      339,
-      8
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      313,
-      2
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      61,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      302,
-      3
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      362,
-      2
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      313,
-      2
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      61,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      302,
-      3
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      362,
-      2
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      302,
-      3
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      362,
-      2
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      302,
-      3
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      362,
-      2
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      1
-    ]
-  ]
-}
+* n_PROGRAM
+ * n_STATEMENT_LIST
+  * n_OPEN_TAG
+   > <?php
+  > "\n\n"
+  * n_STATEMENT
+   * n_CLASS_DECLARATION
+    * n_CLASS_ATTRIBUTES
+     > class
+    > " "
+    * n_CLASS_NAME
+     > a
+    * n_EMPTY
+    * n_EMPTY
+    * n_STATEMENT_LIST
+     > {
+     > "\n "
+     * n_STATEMENT
+      * n_CLASS_MEMBER_DECLARATION_LIST
+       * n_CLASS_MEMBER_MODIFIER_LIST
+        * n_STRING
+         > public
+       > " "
+       * n_CLASS_MEMBER_DECLARATION
+        * n_VARIABLE
+         > $b
+        * n_EMPTY
+      > ;
+     > "\n\n "
+     * n_STATEMENT
+      * n_METHOD_DECLARATION
+       * n_METHOD_MODIFIER_LIST
+        * n_STRING
+         > public
+       * n_EMPTY
+       * n_STRING
+        > c
+       * n_DECLARATION_PARAMETER_LIST
+        > (
+        > )
+       * n_EMPTY
+       * n_EMPTY
+       * n_STATEMENT_LIST
+        > {
+        > " "
+        > }
+     > "\n"
+     > }
+  > "\n\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $d
+    > " "
+    * n_OPERATOR
+     > =
+    > " "
+    * n_OBJECT_PROPERTY_ACCESS
+     * n_NEW
+      > (
+      > new
+      > " "
+      * n_CLASS_NAME
+       > a
+      * n_EMPTY
+     > ->
+     * n_STRING
+      > b
+   > ;
+  > "\n\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $e
+    > " "
+    * n_OPERATOR
+     > =
+    > " "
+    * n_METHOD_CALL
+     * n_OBJECT_PROPERTY_ACCESS
+      * n_NEW
+       > (
+       > new
+       > " "
+       * n_CLASS_NAME
+        > a
+       * n_EMPTY
+      > ->
+      * n_STRING
+       > c
+     * n_CALL_PARAMETER_LIST
+      > (
+      > )
+   > ;
+  > "\n\n"
+  * n_STATEMENT
+   * n_OBJECT_PROPERTY_ACCESS
+    * n_NEW
+     > (
+     > new
+     > " "
+     * n_CLASS_NAME
+      > a
+     * n_EMPTY
+    > ->
+    * n_STRING
+     > b
+   > ;
+  > "\n\n"
+  * n_STATEMENT
+   * n_METHOD_CALL
+    * n_OBJECT_PROPERTY_ACCESS
+     * n_NEW
+      > (
+      > new
+      > " "
+      * n_CLASS_NAME
+       > a
+      * n_EMPTY
+     > ->
+     * n_STRING
+      > c
+    * n_CALL_PARAMETER_LIST
+     > (
+     > )
+   > ;
+ > "\n"
diff --git a/src/parser/xhpast/__tests__/data/php-array-dereference-2.test b/src/parser/xhpast/__tests__/data/php-array-dereference-2.test
index ac288ed7..46d11d21 100644
--- a/src/parser/xhpast/__tests__/data/php-array-dereference-2.test
+++ b/src/parser/xhpast/__tests__/data/php-array-dereference-2.test
@@ -1,185 +1,43 @@
 <?php
 
 if ($j->getStatus()['running']) {
   // do something
 }
 ~~~~~~~~~~
 pass
 ~~~~~~~~~~
-{
-  "tree": [
-    9000,
-    0,
-    19,
-    [
-      [
-        9006,
-        0,
-        18,
-        [
-          [
-            9007,
-            0,
-            0
-          ],
-          [
-            9004,
-            2,
-            18,
-            [
-              [
-                9015,
-                2,
-                18,
-                [
-                  [
-                    9017,
-                    2,
-                    18,
-                    [
-                      [
-                        9016,
-                        4,
-                        13,
-                        [
-                          [
-                            9102,
-                            5,
-                            12,
-                            [
-                              [
-                                9092,
-                                5,
-                                7,
-                                [
-                                  [
-                                    9047,
-                                    5,
-                                    5
-                                  ],
-                                  [
-                                    9013,
-                                    7,
-                                    7
-                                  ]
-                                ]
-                              ],
-                              [
-                                9100,
-                                8,
-                                12,
-                                [
-                                  [
-                                    9095,
-                                    8,
-                                    9
-                                  ],
-                                  [
-                                    9087,
-                                    11,
-                                    11
-                                  ]
-                                ]
-                              ]
-                            ]
-                          ]
-                        ]
-                      ],
-                      [
-                        9006,
-                        15,
-                        18
-                      ]
-                    ]
-                  ]
-                ]
-              ]
-            ]
-          ]
-        ]
-      ]
-    ]
-  ],
-  "stream": [
-    [
-      373,
-      5
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      305,
-      2
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      313,
-      2
-    ],
-    [
-      362,
-      2
-    ],
-    [
-      311,
-      9
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      91,
-      1
-    ],
-    [
-      319,
-      9
-    ],
-    [
-      93,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      377,
-      3
-    ],
-    [
-      371,
-      16
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      1
-    ]
-  ]
-}
+* n_PROGRAM
+ * n_STATEMENT_LIST
+  * n_OPEN_TAG
+   > <?php
+  > "\n\n"
+  * n_STATEMENT
+   * n_CONDITION_LIST
+    * n_IF
+     > if
+     > " "
+     * n_CONTROL_CONDITION
+      > (
+      * n_METHOD_CALL
+       * n_OBJECT_PROPERTY_ACCESS
+        * n_VARIABLE
+         > $j
+        > ->
+        * n_STRING
+         > getStatus
+       * n_INDEX_ACCESS
+        * n_CALL_PARAMETER_LIST
+         > (
+         > )
+        > [
+        * n_STRING_SCALAR
+         > 'running'
+        > ]
+      > )
+     > " "
+     * n_STATEMENT_LIST
+      > {
+      > "\n  "
+      > "// do something\n"
+      > }
+ > "\n"
diff --git a/src/parser/xhpast/__tests__/data/php-array-dereference-3.test b/src/parser/xhpast/__tests__/data/php-array-dereference-3.test
index 08e06908..beb098ac 100644
--- a/src/parser/xhpast/__tests__/data/php-array-dereference-3.test
+++ b/src/parser/xhpast/__tests__/data/php-array-dereference-3.test
@@ -1,209 +1,45 @@
 <?php
 if (isset(self::getSearchStates()[$state])) { }
 ~~~~~~~~~~
 pass
 ~~~~~~~~~~
-{
-  "tree": [
-    9000,
-    0,
-    21,
-    [
-      [
-        9006,
-        0,
-        20,
-        [
-          [
-            9007,
-            0,
-            0
-          ],
-          [
-            9004,
-            2,
-            20,
-            [
-              [
-                9015,
-                2,
-                20,
-                [
-                  [
-                    9017,
-                    2,
-                    20,
-                    [
-                      [
-                        9016,
-                        4,
-                        16,
-                        [
-                          [
-                            9099,
-                            5,
-                            15,
-                            [
-                              [
-                                9001,
-                                5,
-                                5
-                              ],
-                              [
-                                9095,
-                                6,
-                                15,
-                                [
-                                  [
-                                    9100,
-                                    7,
-                                    14,
-                                    [
-                                      [
-                                        9099,
-                                        7,
-                                        11,
-                                        [
-                                          [
-                                            9089,
-                                            7,
-                                            9,
-                                            [
-                                              [
-                                                9090,
-                                                7,
-                                                7
-                                              ],
-                                              [
-                                                9013,
-                                                9,
-                                                9
-                                              ]
-                                            ]
-                                          ],
-                                          [
-                                            9095,
-                                            10,
-                                            11
-                                          ]
-                                        ]
-                                      ],
-                                      [
-                                        9047,
-                                        13,
-                                        13
-                                      ]
-                                    ]
-                                  ]
-                                ]
-                              ]
-                            ]
-                          ]
-                        ]
-                      ],
-                      [
-                        9006,
-                        18,
-                        20
-                      ]
-                    ]
-                  ]
-                ]
-              ]
-            ]
-          ]
-        ]
-      ]
-    ]
-  ],
-  "stream": [
-    [
-      373,
-      5
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      305,
-      2
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      355,
-      5
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      311,
-      4
-    ],
-    [
-      383,
-      2
-    ],
-    [
-      311,
-      15
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      91,
-      1
-    ],
-    [
-      313,
-      6
-    ],
-    [
-      93,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      1
-    ]
-  ]
-}
+* n_PROGRAM
+ * n_STATEMENT_LIST
+  * n_OPEN_TAG
+   > <?php
+  > "\n"
+  * n_STATEMENT
+   * n_CONDITION_LIST
+    * n_IF
+     > if
+     > " "
+     * n_CONTROL_CONDITION
+      > (
+      * n_FUNCTION_CALL
+       * n_SYMBOL_NAME
+        > isset
+       * n_CALL_PARAMETER_LIST
+        > (
+        * n_INDEX_ACCESS
+         * n_FUNCTION_CALL
+          * n_CLASS_STATIC_ACCESS
+           * n_CLASS_NAME
+            > self
+           > ::
+           * n_STRING
+            > getSearchStates
+          * n_CALL_PARAMETER_LIST
+           > (
+           > )
+         > [
+         * n_VARIABLE
+          > $state
+         > ]
+        > )
+      > )
+     > " "
+     * n_STATEMENT_LIST
+      > {
+      > " "
+      > }
+ > "\n"
diff --git a/src/parser/xhpast/__tests__/data/php-array-dereference-4.test b/src/parser/xhpast/__tests__/data/php-array-dereference-4.test
index e8325523..ded857db 100644
--- a/src/parser/xhpast/__tests__/data/php-array-dereference-4.test
+++ b/src/parser/xhpast/__tests__/data/php-array-dereference-4.test
@@ -1,153 +1,35 @@
 <?php
 XHPASTNode::NODE_TYPES['n_PROGRAM'];
 PHP_VERSION[0];
 ~~~~~~~~~~
 pass
 ~~~~~~~~~~
-{
-  "tree": [
-    9000,
-    0,
-    15,
-    [
-      [
-        9006,
-        0,
-        14,
-        [
-          [
-            9007,
-            0,
-            0
-          ],
-          [
-            9004,
-            2,
-            8,
-            [
-              [
-                9100,
-                2,
-                7,
-                [
-                  [
-                    9089,
-                    2,
-                    4,
-                    [
-                      [
-                        9090,
-                        2,
-                        2
-                      ],
-                      [
-                        9013,
-                        4,
-                        4
-                      ]
-                    ]
-                  ],
-                  [
-                    9087,
-                    6,
-                    6
-                  ]
-                ]
-              ]
-            ]
-          ],
-          [
-            9004,
-            10,
-            14,
-            [
-              [
-                9100,
-                10,
-                13,
-                [
-                  [
-                    9013,
-                    10,
-                    10
-                  ],
-                  [
-                    9086,
-                    12,
-                    12
-                  ]
-                ]
-              ]
-            ]
-          ]
-        ]
-      ]
-    ]
-  ],
-  "stream": [
-    [
-      373,
-      5
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      10
-    ],
-    [
-      383,
-      2
-    ],
-    [
-      311,
-      10
-    ],
-    [
-      91,
-      1
-    ],
-    [
-      319,
-      11
-    ],
-    [
-      93,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      11
-    ],
-    [
-      91,
-      1
-    ],
-    [
-      309,
-      1
-    ],
-    [
-      93,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      1
-    ]
-  ]
-}
+* n_PROGRAM
+ * n_STATEMENT_LIST
+  * n_OPEN_TAG
+   > <?php
+  > "\n"
+  * n_STATEMENT
+   * n_INDEX_ACCESS
+    * n_CLASS_STATIC_ACCESS
+     * n_CLASS_NAME
+      > XHPASTNode
+     > ::
+     * n_STRING
+      > NODE_TYPES
+    > [
+    * n_STRING_SCALAR
+     > 'n_PROGRAM'
+    > ]
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_INDEX_ACCESS
+    * n_STRING
+     > PHP_VERSION
+    > [
+    * n_NUMERIC_SCALAR
+     > 0
+    > ]
+   > ;
+ > "\n"
diff --git a/src/parser/xhpast/__tests__/data/php-array-dereference.test b/src/parser/xhpast/__tests__/data/php-array-dereference.test
index 0501ea17..2c1c1151 100644
--- a/src/parser/xhpast/__tests__/data/php-array-dereference.test
+++ b/src/parser/xhpast/__tests__/data/php-array-dereference.test
@@ -1,658 +1,145 @@
 <?php
 
 function foo() {
   return [1,2,3];
 }
 
 $i = 1;
 $x = foo()[2];
 
 $y = foo()[$i];
 
 if (isset(foo()[0])) { }
 ~~~~~~~~~~
 pass
 ~~~~~~~~~~
-{
-  "tree": [
-    9000,
-    0,
-    71,
-    [
-      [
-        9006,
-        0,
-        70,
-        [
-          [
-            9007,
-            0,
-            0
-          ],
-          [
-            9004,
-            2,
-            21,
-            [
-              [
-                9050,
-                2,
-                21,
-                [
-                  [
-                    9005
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9013,
-                    4,
-                    4
-                  ],
-                  [
-                    9059,
-                    5,
-                    6
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9006,
-                    8,
-                    21,
-                    [
-                      [
-                        9004,
-                        10,
-                        19,
-                        [
-                          [
-                            9027,
-                            10,
-                            18,
-                            [
-                              [
-                                9082,
-                                12,
-                                18,
-                                [
-                                  [
-                                    9093,
-                                    12,
-                                    18,
-                                    [
-                                      [
-                                        9094,
-                                        13,
-                                        13,
-                                        [
-                                          [
-                                            9005
-                                          ],
-                                          [
-                                            9086,
-                                            13,
-                                            13
-                                          ]
-                                        ]
-                                      ],
-                                      [
-                                        9094,
-                                        15,
-                                        15,
-                                        [
-                                          [
-                                            9005
-                                          ],
-                                          [
-                                            9086,
-                                            15,
-                                            15
-                                          ]
-                                        ]
-                                      ],
-                                      [
-                                        9094,
-                                        17,
-                                        17,
-                                        [
-                                          [
-                                            9005
-                                          ],
-                                          [
-                                            9086,
-                                            17,
-                                            17
-                                          ]
-                                        ]
-                                      ]
-                                    ]
-                                  ]
-                                ]
-                              ]
-                            ]
-                          ]
-                        ]
-                      ]
-                    ]
-                  ]
-                ]
-              ]
-            ]
-          ],
-          [
-            9004,
-            23,
-            28,
-            [
-              [
-                9077,
-                23,
-                27,
-                [
-                  [
-                    9047,
-                    23,
-                    23
-                  ],
-                  [
-                    9081,
-                    25,
-                    25
-                  ],
-                  [
-                    9086,
-                    27,
-                    27
-                  ]
-                ]
-              ]
-            ]
-          ],
-          [
-            9004,
-            30,
-            40,
-            [
-              [
-                9077,
-                30,
-                39,
-                [
-                  [
-                    9047,
-                    30,
-                    30
-                  ],
-                  [
-                    9081,
-                    32,
-                    32
-                  ],
-                  [
-                    9100,
-                    34,
-                    39,
-                    [
-                      [
-                        9099,
-                        34,
-                        36,
-                        [
-                          [
-                            9001,
-                            34,
-                            34
-                          ],
-                          [
-                            9095,
-                            35,
-                            36
-                          ]
-                        ]
-                      ],
-                      [
-                        9086,
-                        38,
-                        38
-                      ]
-                    ]
-                  ]
-                ]
-              ]
-            ]
-          ],
-          [
-            9004,
-            42,
-            52,
-            [
-              [
-                9077,
-                42,
-                51,
-                [
-                  [
-                    9047,
-                    42,
-                    42
-                  ],
-                  [
-                    9081,
-                    44,
-                    44
-                  ],
-                  [
-                    9100,
-                    46,
-                    51,
-                    [
-                      [
-                        9099,
-                        46,
-                        48,
-                        [
-                          [
-                            9001,
-                            46,
-                            46
-                          ],
-                          [
-                            9095,
-                            47,
-                            48
-                          ]
-                        ]
-                      ],
-                      [
-                        9047,
-                        50,
-                        50
-                      ]
-                    ]
-                  ]
-                ]
-              ]
-            ]
-          ],
-          [
-            9004,
-            54,
-            70,
-            [
-              [
-                9015,
-                54,
-                70,
-                [
-                  [
-                    9017,
-                    54,
-                    70,
-                    [
-                      [
-                        9016,
-                        56,
-                        66,
-                        [
-                          [
-                            9099,
-                            57,
-                            65,
-                            [
-                              [
-                                9001,
-                                57,
-                                57
-                              ],
-                              [
-                                9095,
-                                58,
-                                65,
-                                [
-                                  [
-                                    9100,
-                                    59,
-                                    64,
-                                    [
-                                      [
-                                        9099,
-                                        59,
-                                        61,
-                                        [
-                                          [
-                                            9001,
-                                            59,
-                                            59
-                                          ],
-                                          [
-                                            9095,
-                                            60,
-                                            61
-                                          ]
-                                        ]
-                                      ],
-                                      [
-                                        9086,
-                                        63,
-                                        63
-                                      ]
-                                    ]
-                                  ]
-                                ]
-                              ]
-                            ]
-                          ]
-                        ]
-                      ],
-                      [
-                        9006,
-                        68,
-                        70
-                      ]
-                    ]
-                  ]
-                ]
-              ]
-            ]
-          ]
-        ]
-      ]
-    ]
-  ],
-  "stream": [
-    [
-      373,
-      5
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      339,
-      8
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      3
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      377,
-      3
-    ],
-    [
-      341,
-      6
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      91,
-      1
-    ],
-    [
-      309,
-      1
-    ],
-    [
-      44,
-      1
-    ],
-    [
-      309,
-      1
-    ],
-    [
-      44,
-      1
-    ],
-    [
-      309,
-      1
-    ],
-    [
-      93,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      313,
-      2
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      61,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      309,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      313,
-      2
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      61,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      3
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      91,
-      1
-    ],
-    [
-      309,
-      1
-    ],
-    [
-      93,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      313,
-      2
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      61,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      3
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      91,
-      1
-    ],
-    [
-      313,
-      2
-    ],
-    [
-      93,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      305,
-      2
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      355,
-      5
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      311,
-      3
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      91,
-      1
-    ],
-    [
-      309,
-      1
-    ],
-    [
-      93,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      1
-    ]
-  ]
-}
+* n_PROGRAM
+ * n_STATEMENT_LIST
+  * n_OPEN_TAG
+   > <?php
+  > "\n\n"
+  * n_STATEMENT
+   * n_FUNCTION_DECLARATION
+    * n_EMPTY
+    * n_EMPTY
+    * n_STRING
+     > foo
+    * n_DECLARATION_PARAMETER_LIST
+     > (
+     > )
+    * n_EMPTY
+    * n_EMPTY
+    * n_STATEMENT_LIST
+     > {
+     > "\n  "
+     * n_STATEMENT
+      * n_RETURN
+       > return
+       > " "
+       * n_ARRAY_LITERAL
+        * n_ARRAY_VALUE_LIST
+         > [
+         * n_ARRAY_VALUE
+          * n_EMPTY
+          * n_NUMERIC_SCALAR
+           > 1
+         > ,
+         * n_ARRAY_VALUE
+          * n_EMPTY
+          * n_NUMERIC_SCALAR
+           > 2
+         > ,
+         * n_ARRAY_VALUE
+          * n_EMPTY
+          * n_NUMERIC_SCALAR
+           > 3
+         > ]
+      > ;
+     > "\n"
+     > }
+  > "\n\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $i
+    > " "
+    * n_OPERATOR
+     > =
+    > " "
+    * n_NUMERIC_SCALAR
+     > 1
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > =
+    > " "
+    * n_INDEX_ACCESS
+     * n_FUNCTION_CALL
+      * n_SYMBOL_NAME
+       > foo
+      * n_CALL_PARAMETER_LIST
+       > (
+       > )
+     > [
+     * n_NUMERIC_SCALAR
+      > 2
+     > ]
+   > ;
+  > "\n\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $y
+    > " "
+    * n_OPERATOR
+     > =
+    > " "
+    * n_INDEX_ACCESS
+     * n_FUNCTION_CALL
+      * n_SYMBOL_NAME
+       > foo
+      * n_CALL_PARAMETER_LIST
+       > (
+       > )
+     > [
+     * n_VARIABLE
+      > $i
+     > ]
+   > ;
+  > "\n\n"
+  * n_STATEMENT
+   * n_CONDITION_LIST
+    * n_IF
+     > if
+     > " "
+     * n_CONTROL_CONDITION
+      > (
+      * n_FUNCTION_CALL
+       * n_SYMBOL_NAME
+        > isset
+       * n_CALL_PARAMETER_LIST
+        > (
+        * n_INDEX_ACCESS
+         * n_FUNCTION_CALL
+          * n_SYMBOL_NAME
+           > foo
+          * n_CALL_PARAMETER_LIST
+           > (
+           > )
+         > [
+         * n_NUMERIC_SCALAR
+          > 0
+         > ]
+        > )
+      > )
+     > " "
+     * n_STATEMENT_LIST
+      > {
+      > " "
+      > }
+ > "\n"
diff --git a/src/parser/xhpast/__tests__/data/php-binary-literal.php.test b/src/parser/xhpast/__tests__/data/php-binary-literal.php.test
index 80f7d64c..6d783319 100644
--- a/src/parser/xhpast/__tests__/data/php-binary-literal.php.test
+++ b/src/parser/xhpast/__tests__/data/php-binary-literal.php.test
@@ -1,55 +1,13 @@
 <?php 0b10;
 ~~~~~~~~~~
 pass, rtrim
 ~~~~~~~~~~
-{
-  "tree": [
-    9000,
-    0,
-    3,
-    [
-      [
-        9006,
-        0,
-        3,
-        [
-          [
-            9007,
-            0,
-            0
-          ],
-          [
-            9004,
-            2,
-            3,
-            [
-              [
-                9086,
-                2,
-                2
-              ]
-            ]
-          ]
-        ]
-      ]
-    ]
-  ],
-  "stream": [
-    [
-      373,
-      5
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      309,
-      4
-    ],
-    [
-      59,
-      1
-    ]
-  ]
-}
+* n_PROGRAM
+ * n_STATEMENT_LIST
+  * n_OPEN_TAG
+   > <?php
+  > " "
+  * n_STATEMENT
+   * n_NUMERIC_SCALAR
+    > 0b10
+   > ;
diff --git a/src/parser/xhpast/__tests__/data/php-callable-typehint.php.test b/src/parser/xhpast/__tests__/data/php-callable-typehint.php.test
index 2bbdcd78..2153d006 100644
--- a/src/parser/xhpast/__tests__/data/php-callable-typehint.php.test
+++ b/src/parser/xhpast/__tests__/data/php-callable-typehint.php.test
@@ -1,148 +1,33 @@
 <?php
 
 function f(callable $c) {}
 ~~~~~~~~~~
 pass
 ~~~~~~~~~~
-{
-  "tree": [
-    9000,
-    0,
-    13,
-    [
-      [
-        9006,
-        0,
-        12,
-        [
-          [
-            9007,
-            0,
-            0
-          ],
-          [
-            9004,
-            2,
-            12,
-            [
-              [
-                9050,
-                2,
-                12,
-                [
-                  [
-                    9005
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9013,
-                    4,
-                    4
-                  ],
-                  [
-                    9059,
-                    5,
-                    9,
-                    [
-                      [
-                        9060,
-                        6,
-                        8,
-                        [
-                          [
-                            9061,
-                            6,
-                            6
-                          ],
-                          [
-                            9047,
-                            8,
-                            8
-                          ],
-                          [
-                            9005
-                          ]
-                        ]
-                      ]
-                    ]
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9006,
-                    11,
-                    12
-                  ]
-                ]
-              ]
-            ]
-          ]
-        ]
-      ]
-    ]
-  ],
-  "stream": [
-    [
-      373,
-      5
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      339,
-      8
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      391,
-      8
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      313,
-      2
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      1
-    ]
-  ]
-}
+* n_PROGRAM
+ * n_STATEMENT_LIST
+  * n_OPEN_TAG
+   > <?php
+  > "\n\n"
+  * n_STATEMENT
+   * n_FUNCTION_DECLARATION
+    * n_EMPTY
+    * n_EMPTY
+    * n_STRING
+     > f
+    * n_DECLARATION_PARAMETER_LIST
+     > (
+     * n_DECLARATION_PARAMETER
+      * n_TYPE_NAME
+       > callable
+      > " "
+      * n_VARIABLE
+       > $c
+      * n_EMPTY
+     > )
+    * n_EMPTY
+    * n_EMPTY
+    * n_STATEMENT_LIST
+     > {
+     > }
+ > "\n"
diff --git a/src/parser/xhpast/__tests__/data/php-comments.php.test b/src/parser/xhpast/__tests__/data/php-comments.php.test
index 0081f61d..20d92484 100644
--- a/src/parser/xhpast/__tests__/data/php-comments.php.test
+++ b/src/parser/xhpast/__tests__/data/php-comments.php.test
@@ -1,71 +1,24 @@
 <?php
 
 # comment
 // comment
 /* comment */
 /**
  * comment
  */
 /* unterminated comment
 ~~~~~~~~~~
 pass
 ~~~~~~~~~~
-{
-  "tree": [
-    9000,
-    0,
-    8,
-    [
-      [
-        9006,
-        0,
-        0,
-        [
-          [
-            9007,
-            0,
-            0
-          ]
-        ]
-      ]
-    ]
-  ],
-  "stream": [
-    [
-      373,
-      5
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      371,
-      10
-    ],
-    [
-      371,
-      11
-    ],
-    [
-      371,
-      13
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      372,
-      18
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      371,
-      24
-    ]
-  ]
-}
+* n_PROGRAM
+ * n_STATEMENT_LIST
+  * n_OPEN_TAG
+   > <?php
+ > "\n\n"
+ > "# comment\n"
+ > "// comment\n"
+ > "/* comment */"
+ > "\n"
+ > "/**\n * comment\n */"
+ > "\n"
+ > "/* unterminated comment\n"
diff --git a/src/parser/xhpast/__tests__/data/php-empty-heredoc.php.test b/src/parser/xhpast/__tests__/data/php-empty-heredoc.php.test
index ccddd1da..905cf11b 100644
--- a/src/parser/xhpast/__tests__/data/php-empty-heredoc.php.test
+++ b/src/parser/xhpast/__tests__/data/php-empty-heredoc.php.test
@@ -1,95 +1,24 @@
 <?php
 
 $a = <<<EODOC
 EODOC;
 ~~~~~~~~~~
 pass
 ~~~~~~~~~~
-{
-  "tree": [
-    9000,
-    0,
-    8,
-    [
-      [
-        9006,
-        0,
-        7,
-        [
-          [
-            9007,
-            0,
-            0
-          ],
-          [
-            9004,
-            2,
-            7,
-            [
-              [
-                9077,
-                2,
-                6,
-                [
-                  [
-                    9047,
-                    2,
-                    2
-                  ],
-                  [
-                    9081,
-                    4,
-                    4
-                  ],
-                  [
-                    9098,
-                    6,
-                    6
-                  ]
-                ]
-              ]
-            ]
-          ]
-        ]
-      ]
-    ]
-  ],
-  "stream": [
-    [
-      373,
-      5
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      313,
-      2
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      61,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      380,
-      14
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      1
-    ]
-  ]
-}
+* n_PROGRAM
+ * n_STATEMENT_LIST
+  * n_OPEN_TAG
+   > <?php
+  > "\n\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $a
+    > " "
+    * n_OPERATOR
+     > =
+    > " "
+    * n_HEREDOC
+     > "<<<EODOC\nEODOC"
+   > ;
+ > "\n"
diff --git a/src/parser/xhpast/__tests__/data/php-finally.php.test b/src/parser/xhpast/__tests__/data/php-finally.php.test
index 5e0ff961..49fd798a 100644
--- a/src/parser/xhpast/__tests__/data/php-finally.php.test
+++ b/src/parser/xhpast/__tests__/data/php-finally.php.test
@@ -1,177 +1,36 @@
 <?php try {} catch (C $x) {} finally {}
 ~~~~~~~~~~
 pass
 ~~~~~~~~~~
-{
-  "tree": [
-    9000,
-    0,
-    22,
-    [
-      [
-        9006,
-        0,
-        21,
-        [
-          [
-            9007,
-            0,
-            0
-          ],
-          [
-            9004,
-            2,
-            21,
-            [
-              [
-                9041,
-                2,
-                21,
-                [
-                  [
-                    9006,
-                    4,
-                    5
-                  ],
-                  [
-                    9042,
-                    7,
-                    16,
-                    [
-                      [
-                        9043,
-                        7,
-                        16,
-                        [
-                          [
-                            9090,
-                            10,
-                            10
-                          ],
-                          [
-                            9047,
-                            12,
-                            12
-                          ],
-                          [
-                            9006,
-                            15,
-                            16
-                          ]
-                        ]
-                      ]
-                    ]
-                  ],
-                  [
-                    9113,
-                    18,
-                    21,
-                    [
-                      [
-                        9006
-                      ]
-                    ]
-                  ]
-                ]
-              ]
-            ]
-          ]
-        ]
-      ]
-    ]
-  ],
-  "stream": [
-    [
-      373,
-      5
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      342,
-      3
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      343,
-      5
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      313,
-      2
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      395,
-      7
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      1
-    ]
-  ]
-}
+* n_PROGRAM
+ * n_STATEMENT_LIST
+  * n_OPEN_TAG
+   > <?php
+  > " "
+  * n_STATEMENT
+   * n_TRY
+    > try
+    > " "
+    * n_STATEMENT_LIST
+     > {
+     > }
+    > " "
+    * n_CATCH_LIST
+     * n_CATCH
+      > catch
+      > " "
+      > (
+      * n_CLASS_NAME
+       > C
+      > " "
+      * n_VARIABLE
+       > $x
+      > )
+      > " "
+      * n_STATEMENT_LIST
+       > {
+       > }
+    > " "
+    * n_FINALLY
+     * n_STATEMENT_LIST
+ > "\n"
diff --git a/src/parser/xhpast/__tests__/data/php-literal-index.php.test b/src/parser/xhpast/__tests__/data/php-literal-index.php.test
index 64075727..97455d14 100644
--- a/src/parser/xhpast/__tests__/data/php-literal-index.php.test
+++ b/src/parser/xhpast/__tests__/data/php-literal-index.php.test
@@ -1,163 +1,35 @@
 <?php [1][0]; "X"[0];
 ~~~~~~~~~~
 pass
 ~~~~~~~~~~
-{
-  "tree": [
-    9000,
-    0,
-    15,
-    [
-      [
-        9006,
-        0,
-        14,
-        [
-          [
-            9007,
-            0,
-            0
-          ],
-          [
-            9004,
-            2,
-            8,
-            [
-              [
-                9100,
-                2,
-                7,
-                [
-                  [
-                    9082,
-                    2,
-                    4,
-                    [
-                      [
-                        9093,
-                        2,
-                        4,
-                        [
-                          [
-                            9094,
-                            3,
-                            3,
-                            [
-                              [
-                                9005
-                              ],
-                              [
-                                9086,
-                                3,
-                                3
-                              ]
-                            ]
-                          ]
-                        ]
-                      ]
-                    ]
-                  ],
-                  [
-                    9086,
-                    6,
-                    6
-                  ]
-                ]
-              ]
-            ]
-          ],
-          [
-            9004,
-            10,
-            14,
-            [
-              [
-                9100,
-                10,
-                13,
-                [
-                  [
-                    9087,
-                    10,
-                    10
-                  ],
-                  [
-                    9086,
-                    12,
-                    12
-                  ]
-                ]
-              ]
-            ]
-          ]
-        ]
-      ]
-    ]
-  ],
-  "stream": [
-    [
-      373,
-      5
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      91,
-      1
-    ],
-    [
-      309,
-      1
-    ],
-    [
-      93,
-      1
-    ],
-    [
-      91,
-      1
-    ],
-    [
-      309,
-      1
-    ],
-    [
-      93,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      319,
-      3
-    ],
-    [
-      91,
-      1
-    ],
-    [
-      309,
-      1
-    ],
-    [
-      93,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      1
-    ]
-  ]
-}
+* n_PROGRAM
+ * n_STATEMENT_LIST
+  * n_OPEN_TAG
+   > <?php
+  > " "
+  * n_STATEMENT
+   * n_INDEX_ACCESS
+    * n_ARRAY_LITERAL
+     * n_ARRAY_VALUE_LIST
+      > [
+      * n_ARRAY_VALUE
+       * n_EMPTY
+       * n_NUMERIC_SCALAR
+        > 1
+      > ]
+    > [
+    * n_NUMERIC_SCALAR
+     > 0
+    > ]
+   > ;
+  > " "
+  * n_STATEMENT
+   * n_INDEX_ACCESS
+    * n_STRING_SCALAR
+     > "\"X\""
+    > [
+    * n_NUMERIC_SCALAR
+     > 0
+    > ]
+   > ;
+ > "\n"
diff --git a/src/parser/xhpast/__tests__/data/php-literals.php.test b/src/parser/xhpast/__tests__/data/php-literals.php.test
index 5314f492..91811b5e 100644
--- a/src/parser/xhpast/__tests__/data/php-literals.php.test
+++ b/src/parser/xhpast/__tests__/data/php-literals.php.test
@@ -1,368 +1,88 @@
 <?php
 
 1;
 1.1;
 -1;
 -1.1;
 1e1;
 0xFF;
 'a';
 "a";
 `a`;
 b'a';
 b"a";
 lbl:
 ~~~~~~~~~~
 pass
 ~~~~~~~~~~
-{
-  "tree": [
-    9000,
-    0,
-    39,
-    [
-      [
-        9006,
-        0,
-        38,
-        [
-          [
-            9007,
-            0,
-            0
-          ],
-          [
-            9004,
-            2,
-            3,
-            [
-              [
-                9086,
-                2,
-                2
-              ]
-            ]
-          ],
-          [
-            9004,
-            5,
-            6,
-            [
-              [
-                9086,
-                5,
-                5
-              ]
-            ]
-          ],
-          [
-            9004,
-            8,
-            10,
-            [
-              [
-                9075,
-                8,
-                9,
-                [
-                  [
-                    9081,
-                    8,
-                    8
-                  ],
-                  [
-                    9086,
-                    9,
-                    9
-                  ]
-                ]
-              ]
-            ]
-          ],
-          [
-            9004,
-            12,
-            14,
-            [
-              [
-                9075,
-                12,
-                13,
-                [
-                  [
-                    9081,
-                    12,
-                    12
-                  ],
-                  [
-                    9086,
-                    13,
-                    13
-                  ]
-                ]
-              ]
-            ]
-          ],
-          [
-            9004,
-            16,
-            17,
-            [
-              [
-                9086,
-                16,
-                16
-              ]
-            ]
-          ],
-          [
-            9004,
-            19,
-            20,
-            [
-              [
-                9086,
-                19,
-                19
-              ]
-            ]
-          ],
-          [
-            9004,
-            22,
-            23,
-            [
-              [
-                9087,
-                22,
-                22
-              ]
-            ]
-          ],
-          [
-            9004,
-            25,
-            26,
-            [
-              [
-                9087,
-                25,
-                25
-              ]
-            ]
-          ],
-          [
-            9004,
-            28,
-            29,
-            [
-              [
-                9084,
-                28,
-                28
-              ]
-            ]
-          ],
-          [
-            9004,
-            31,
-            32,
-            [
-              [
-                9087,
-                31,
-                31
-              ]
-            ]
-          ],
-          [
-            9004,
-            34,
-            35,
-            [
-              [
-                9087,
-                34,
-                34
-              ]
-            ]
-          ],
-          [
-            9014,
-            37,
-            38,
-            [
-              [
-                9013,
-                37,
-                37
-              ]
-            ]
-          ]
-        ]
-      ]
-    ]
-  ],
-  "stream": [
-    [
-      373,
-      5
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      309,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      310,
-      3
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      45,
-      1
-    ],
-    [
-      309,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      45,
-      1
-    ],
-    [
-      310,
-      3
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      310,
-      3
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      309,
-      4
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      319,
-      3
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      319,
-      3
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      320,
-      3
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      319,
-      4
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      319,
-      4
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      3
-    ],
-    [
-      58,
-      1
-    ],
-    [
-      377,
-      1
-    ]
-  ]
-}
+* n_PROGRAM
+ * n_STATEMENT_LIST
+  * n_OPEN_TAG
+   > <?php
+  > "\n\n"
+  * n_STATEMENT
+   * n_NUMERIC_SCALAR
+    > 1
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_NUMERIC_SCALAR
+    > 1.1
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_UNARY_PREFIX_EXPRESSION
+    * n_OPERATOR
+     > -
+    * n_NUMERIC_SCALAR
+     > 1
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_UNARY_PREFIX_EXPRESSION
+    * n_OPERATOR
+     > -
+    * n_NUMERIC_SCALAR
+     > 1.1
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_NUMERIC_SCALAR
+    > 1e1
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_NUMERIC_SCALAR
+    > 0xFF
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_STRING_SCALAR
+    > 'a'
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_STRING_SCALAR
+    > "\"a\""
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BACKTICKS_EXPRESSION
+    > `a`
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_STRING_SCALAR
+    > b'a'
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_STRING_SCALAR
+    > "b\"a\""
+   > ;
+  > "\n"
+  * n_LABEL
+   * n_STRING
+    > lbl
+   > :
+ > "\n"
diff --git a/src/parser/xhpast/__tests__/data/php-only-finally.test b/src/parser/xhpast/__tests__/data/php-only-finally.test
index 2e2f04a4..383b3f15 100644
--- a/src/parser/xhpast/__tests__/data/php-only-finally.test
+++ b/src/parser/xhpast/__tests__/data/php-only-finally.test
@@ -1,107 +1,20 @@
 <?php try {} finally {}
 ~~~~~~~~~~
 pass
 ~~~~~~~~~~
-{
-  "tree" : [
-    9000,
-    0,
-    11,
-    [
-      [
-        9006,
-        0,
-        10,
-        [
-          [
-            9007,
-            0,
-            0
-          ],
-          [
-            9004,
-            2,
-            10,
-            [
-              [
-                9041,
-                2,
-                10,
-                [
-                  [
-                    9006,
-                    4,
-                    5
-                  ],
-                  [
-                    9042
-                  ],
-                  [
-                    9113,
-                    7,
-                    10,
-                    [
-                      [
-                        9006
-                      ]
-                    ]
-                  ]
-                ]
-              ]
-            ]
-          ]
-        ]
-      ]
-    ]
-  ],
-  "stream": [
-    [
-      373,
-      5
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      342,
-      3
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      395,
-      7
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      1
-    ]
-  ]
-}
+* n_PROGRAM
+ * n_STATEMENT_LIST
+  * n_OPEN_TAG
+   > <?php
+  > " "
+  * n_STATEMENT
+   * n_TRY
+    > try
+    > " "
+    * n_STATEMENT_LIST
+     > {
+     > }
+    * n_CATCH_LIST
+    * n_FINALLY
+     * n_STATEMENT_LIST
+ > "\n"
diff --git a/src/parser/xhpast/__tests__/data/php-short-array.php.test b/src/parser/xhpast/__tests__/data/php-short-array.php.test
index 4e121e30..58f8da99 100644
--- a/src/parser/xhpast/__tests__/data/php-short-array.php.test
+++ b/src/parser/xhpast/__tests__/data/php-short-array.php.test
@@ -1,70 +1,16 @@
 <?php [];
 ~~~~~~~~~~
 pass
 ~~~~~~~~~~
-{
-  "tree": [
-    9000,
-    0,
-    5,
-    [
-      [
-        9006,
-        0,
-        4,
-        [
-          [
-            9007,
-            0,
-            0
-          ],
-          [
-            9004,
-            2,
-            4,
-            [
-              [
-                9082,
-                2,
-                3,
-                [
-                  [
-                    9093,
-                    2,
-                    3
-                  ]
-                ]
-              ]
-            ]
-          ]
-        ]
-      ]
-    ]
-  ],
-  "stream": [
-    [
-      373,
-      5
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      91,
-      1
-    ],
-    [
-      93,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      1
-    ]
-  ]
-}
+* n_PROGRAM
+ * n_STATEMENT_LIST
+  * n_OPEN_TAG
+   > <?php
+  > " "
+  * n_STATEMENT
+   * n_ARRAY_LITERAL
+    * n_ARRAY_VALUE_LIST
+     > [
+     > ]
+   > ;
+ > "\n"
diff --git a/src/parser/xhpast/__tests__/data/php-syntax.php.test b/src/parser/xhpast/__tests__/data/php-syntax.php.test
index fcbc58e3..5172d414 100644
--- a/src/parser/xhpast/__tests__/data/php-syntax.php.test
+++ b/src/parser/xhpast/__tests__/data/php-syntax.php.test
@@ -1,11367 +1,2492 @@
 <?php
 
 1;
 array(1);
 
 function f() {}
 function f1($x) {}
 function &f2($x) {}
 function f3(&$x) {}
 function &f4(&$x) {}
 function f5(C $x) {}
 function f6(array $x) {}
 function f7(array $x = array()) {}
 function f8($x = null) {}
 function f9(C $x = null) {}
 
 class A {}
 class B extends C {}
 class D extends E implements F {}
 class G extends H implements J, K {}
 final class L {}
 abstract class M {}
 
 final class T {
   const C = 1;
   const D = 1, E = 1;
 
   var $f;
   var $g, $h;
   public $i;
   protected $j, $k;
   private $l = 3;
   public static $m = 4, $n = 5;
 
 
   function m() {}
   public function m2() {}
   protected function m3() {}
   private function m4() {}
   function &n() {}
   static function n1() {}
 }
 
 abstract class U {
   abstract function v();
 }
 
 interface N {}
 interface O extends P {}
 interface Q extends R, S {}
 
 use z;
 use aa, ab;
 use qq as rr, mm as nn, \oo, \pp as qq;
 const F = 1;
 const G = 2, H = 3;
 lbl:
 
 if (1) {}
 if (1) {} else {}
 if (1) {} elseif (2) {} else {}
 if (1) {} elseif (2) {} elseif (3) {}
 
 if (1):
 endif;
 
 if (1):
 else:
 endif;
 
 if (1):
 elseif (2):
 endif;
 
 if (1):
 elseif (2):
 elseif (3):
 endif;
 
 while (1) {}
 
 while (1):
 endwhile;
 
 do {} while (1);
 
 
 for (;;) {}
 
 for (;;):
 endfor;
 
 switch (1) {
   case 1:
     break;
   case 2;
     break;
   default:
     continue;
 }
 
 switch(1) {;}
 switch(1):
 endswitch;
 
 break;
 break 1;
 continue;
 continue 1;
 return;
 return 1;
 return $x;
 
 global $x;
 global $x, $y;
 global $$q;
 global ${$z.$z};
 static $x;
 static $x, $y;
 
 echo 1;
 echo 1, 2;
 
 unset($a, $b);
 
 foreach ($x as $y) {}
 foreach ($x as $k => $y) {}
 foreach ($x as $k => &$y) {}
 
 foreach (array() as $x) {}
 foreach (array() as $k => $y) {}
 
 foreach ($x as $y):
 endforeach;
 
 declare(x=1);
 
 declare(y=1) {
 }
 
 declare(z=1):
 enddeclare;
 
 try {} catch (C $x) {}
 try {} catch (C $x) {} catch (D $x) {}
 
 throw 1;
 
 clone $q;
 $x + $x;
 $x - $x;
 $x * $x;
 $x / $x;
 $x . $x;
 $x % $x;
 $x & $x;
 $x | $x;
 $x ^ $x;
 $x << $x;
 $x >> $x;
 $x++;
 ++$x;
 $x--;
 --$x;
 +$x;
 -$x;
 !$x;
 ~$x;
 $x == $x;
 $x === $x;
 $x != $x;
 $x !== $x;
 $x = $x;
 $x < $x;
 $x <= $x;
 $x > $x;
 $x >= $x;
 $x instanceof $x;
 ($x);
 ($x ? $x : $x);
 ($x ?: $x);
 $x || $x;
 $x && $x;
 $x and $x;
 $x or $x;
 $x xor $x;
 $x += $x;
 $x -= $x;
 $x *= $x;
 $x /= $x;
 $x .= $x;
 $x %= $x;
 $x &= $x;
 $x |= $x;
 $x ^= $x;
 $x <<= $x;
 $x >>= $x;
 (int)$x;
 (double)$x;
 (string)$x;
 (binary)$x;
 (array)$x;
 (object)$x;
 (bool)$x;
 (unset)$x;
 $x[] = $x;
 
 @$x;
 
 __LINE__;
 __FILE__;
 __DIR__;
 __CLASS__;
 __METHOD__;
 __FUNCTION__;
 __NAMESPACE__;
 
 goto lbl;
 ~~~~~~~~~~
 pass
 ~~~~~~~~~~
-{
-  "tree": [
-    9000,
-    0,
-    1376,
-    [
-      [
-        9006,
-        0,
-        1375,
-        [
-          [
-            9007,
-            0,
-            0
-          ],
-          [
-            9004,
-            2,
-            3,
-            [
-              [
-                9086,
-                2,
-                2
-              ]
-            ]
-          ],
-          [
-            9004,
-            5,
-            9,
-            [
-              [
-                9082,
-                5,
-                8,
-                [
-                  [
-                    9093,
-                    6,
-                    8,
-                    [
-                      [
-                        9094,
-                        7,
-                        7,
-                        [
-                          [
-                            9005
-                          ],
-                          [
-                            9086,
-                            7,
-                            7
-                          ]
-                        ]
-                      ]
-                    ]
-                  ]
-                ]
-              ]
-            ]
-          ],
-          [
-            9004,
-            11,
-            18,
-            [
-              [
-                9050,
-                11,
-                18,
-                [
-                  [
-                    9005
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9013,
-                    13,
-                    13
-                  ],
-                  [
-                    9059,
-                    14,
-                    15
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9006,
-                    17,
-                    18
-                  ]
-                ]
-              ]
-            ]
-          ],
-          [
-            9004,
-            20,
-            28,
-            [
-              [
-                9050,
-                20,
-                28,
-                [
-                  [
-                    9005
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9013,
-                    22,
-                    22
-                  ],
-                  [
-                    9059,
-                    23,
-                    25,
-                    [
-                      [
-                        9060,
-                        24,
-                        24,
-                        [
-                          [
-                            9005
-                          ],
-                          [
-                            9047,
-                            24,
-                            24
-                          ],
-                          [
-                            9005
-                          ]
-                        ]
-                      ]
-                    ]
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9006,
-                    27,
-                    28
-                  ]
-                ]
-              ]
-            ]
-          ],
-          [
-            9004,
-            30,
-            39,
-            [
-              [
-                9050,
-                30,
-                39,
-                [
-                  [
-                    9005
-                  ],
-                  [
-                    9048,
-                    32,
-                    32
-                  ],
-                  [
-                    9013,
-                    33,
-                    33
-                  ],
-                  [
-                    9059,
-                    34,
-                    36,
-                    [
-                      [
-                        9060,
-                        35,
-                        35,
-                        [
-                          [
-                            9005
-                          ],
-                          [
-                            9047,
-                            35,
-                            35
-                          ],
-                          [
-                            9005
-                          ]
-                        ]
-                      ]
-                    ]
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9006,
-                    38,
-                    39
-                  ]
-                ]
-              ]
-            ]
-          ],
-          [
-            9004,
-            41,
-            50,
-            [
-              [
-                9050,
-                41,
-                50,
-                [
-                  [
-                    9005
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9013,
-                    43,
-                    43
-                  ],
-                  [
-                    9059,
-                    44,
-                    47,
-                    [
-                      [
-                        9060,
-                        45,
-                        45,
-                        [
-                          [
-                            9005
-                          ],
-                          [
-                            9049,
-                            45,
-                            46,
-                            [
-                              [
-                                9047,
-                                46,
-                                46
-                              ]
-                            ]
-                          ],
-                          [
-                            9005
-                          ]
-                        ]
-                      ]
-                    ]
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9006,
-                    49,
-                    50
-                  ]
-                ]
-              ]
-            ]
-          ],
-          [
-            9004,
-            52,
-            62,
-            [
-              [
-                9050,
-                52,
-                62,
-                [
-                  [
-                    9005
-                  ],
-                  [
-                    9048,
-                    54,
-                    54
-                  ],
-                  [
-                    9013,
-                    55,
-                    55
-                  ],
-                  [
-                    9059,
-                    56,
-                    59,
-                    [
-                      [
-                        9060,
-                        57,
-                        57,
-                        [
-                          [
-                            9005
-                          ],
-                          [
-                            9049,
-                            57,
-                            58,
-                            [
-                              [
-                                9047,
-                                58,
-                                58
-                              ]
-                            ]
-                          ],
-                          [
-                            9005
-                          ]
-                        ]
-                      ]
-                    ]
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9006,
-                    61,
-                    62
-                  ]
-                ]
-              ]
-            ]
-          ],
-          [
-            9004,
-            64,
-            74,
-            [
-              [
-                9050,
-                64,
-                74,
-                [
-                  [
-                    9005
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9013,
-                    66,
-                    66
-                  ],
-                  [
-                    9059,
-                    67,
-                    71,
-                    [
-                      [
-                        9060,
-                        68,
-                        70,
-                        [
-                          [
-                            9090,
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+    * n_REFERENCE
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+    * n_EMPTY
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+      * n_VARIABLE_REFERENCE
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+   * n_FUNCTION_DECLARATION
+    * n_EMPTY
+    * n_REFERENCE
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+     > f4
+    * n_DECLARATION_PARAMETER_LIST
+     > (
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+      * n_EMPTY
+      * n_VARIABLE_REFERENCE
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+      * n_EMPTY
+     > $x
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+    * n_EMPTY
+    * n_STATEMENT_LIST
+     > {
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+  * n_STATEMENT
+   * n_FUNCTION_DECLARATION
+    * n_EMPTY
+    * n_EMPTY
+    * n_STRING
+     > f5
+    * n_DECLARATION_PARAMETER_LIST
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+      * n_CLASS_NAME
+       > C
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+      * n_VARIABLE
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+      * n_EMPTY
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+    * n_EMPTY
+    * n_EMPTY
+    * n_STATEMENT_LIST
+     > {
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+  * n_STATEMENT
+   * n_FUNCTION_DECLARATION
+    * n_EMPTY
+    * n_EMPTY
+    * n_STRING
+     > f6
+    * n_DECLARATION_PARAMETER_LIST
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+      * n_TYPE_NAME
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+      * n_EMPTY
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+    * n_EMPTY
+    * n_EMPTY
+    * n_STATEMENT_LIST
+     > {
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+  * n_STATEMENT
+   * n_FUNCTION_DECLARATION
+    * n_EMPTY
+    * n_EMPTY
+    * n_STRING
+     > f7
+    * n_DECLARATION_PARAMETER_LIST
+     > (
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+    * n_EMPTY
+    * n_STATEMENT_LIST
+     > {
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+  * n_STATEMENT
+   * n_FUNCTION_DECLARATION
+    * n_EMPTY
+    * n_EMPTY
+    * n_STRING
+     > f8
+    * n_DECLARATION_PARAMETER_LIST
+     > (
+     * n_DECLARATION_PARAMETER
+      * n_EMPTY
+      * n_VARIABLE
+       > $x
+      > " "
+      > =
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+      * n_SYMBOL_NAME
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+    * n_EMPTY
+    * n_EMPTY
+    * n_STATEMENT_LIST
+     > {
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+  * n_STATEMENT
+   * n_FUNCTION_DECLARATION
+    * n_EMPTY
+    * n_EMPTY
+    * n_STRING
+     > f9
+    * n_DECLARATION_PARAMETER_LIST
+     > (
+     * n_DECLARATION_PARAMETER
+      * n_CLASS_NAME
+       > C
+      > " "
+      * n_VARIABLE
+       > $x
+      > " "
+      > =
+      > " "
+      * n_SYMBOL_NAME
+       > null
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+    * n_EMPTY
+    * n_EMPTY
+    * n_STATEMENT_LIST
+     > {
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+  * n_STATEMENT
+   * n_CLASS_DECLARATION
+    * n_CLASS_ATTRIBUTES
+     > class
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+    * n_CLASS_NAME
+     > A
+    * n_EMPTY
+    * n_EMPTY
+    * n_STATEMENT_LIST
+     > {
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+  * n_STATEMENT
+   * n_CLASS_DECLARATION
+    * n_CLASS_ATTRIBUTES
+     > class
+    > " "
+    * n_CLASS_NAME
+     > B
+    > " "
+    * n_EXTENDS_LIST
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+     * n_CLASS_NAME
+      > C
+    * n_EMPTY
+    * n_STATEMENT_LIST
+     > {
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+  * n_STATEMENT
+   * n_CLASS_DECLARATION
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+    * n_IMPLEMENTS_LIST
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+    * n_STATEMENT_LIST
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+  * n_STATEMENT
+   * n_CLASS_DECLARATION
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+    * n_CLASS_NAME
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+    * n_IMPLEMENTS_LIST
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+     * n_CLASS_NAME
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+    * n_STATEMENT_LIST
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+  * n_STATEMENT
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+    * n_EMPTY
+    * n_STATEMENT_LIST
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+  * n_STATEMENT
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+    * n_CLASS_ATTRIBUTES
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+      > abstract
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+    * n_CLASS_NAME
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+    * n_EMPTY
+    * n_EMPTY
+    * n_STATEMENT_LIST
+     > {
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+  * n_STATEMENT
+   * n_CLASS_DECLARATION
+    * n_CLASS_ATTRIBUTES
+     * n_STRING
+      > final
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+     > class
+    > " "
+    * n_CLASS_NAME
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+    * n_EMPTY
+    * n_EMPTY
+    * n_STATEMENT_LIST
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+       * n_CLASS_CONSTANT_DECLARATION
+        * n_STRING
+         > C
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+        > =
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+        * n_NUMERIC_SCALAR
+         > 1
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+     * n_STATEMENT
+      * n_CLASS_CONSTANT_DECLARATION_LIST
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+        * n_NUMERIC_SCALAR
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+      * n_CLASS_MEMBER_DECLARATION_LIST
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+        * n_STRING
+         > var
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+       * n_CLASS_MEMBER_DECLARATION
+        * n_VARIABLE
+         > $f
+        * n_EMPTY
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+     * n_STATEMENT
+      * n_CLASS_MEMBER_DECLARATION_LIST
+       * n_CLASS_MEMBER_MODIFIER_LIST
+        * n_STRING
+         > var
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+       * n_CLASS_MEMBER_DECLARATION
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+         > $g
+        * n_EMPTY
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+       * n_CLASS_MEMBER_DECLARATION
+        * n_VARIABLE
+         > $h
+        * n_EMPTY
+      > ;
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+     * n_STATEMENT
+      * n_CLASS_MEMBER_DECLARATION_LIST
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+        * n_STRING
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+       * n_CLASS_MEMBER_DECLARATION
+        * n_VARIABLE
+         > $i
+        * n_EMPTY
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+     * n_STATEMENT
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+       * n_CLASS_MEMBER_DECLARATION
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+         > $j
+        * n_EMPTY
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+       * n_CLASS_MEMBER_DECLARATION
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+         > $k
+        * n_EMPTY
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+      * n_CLASS_MEMBER_DECLARATION_LIST
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+        * n_STRING
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+       * n_CLASS_MEMBER_DECLARATION
+        * n_VARIABLE
+         > $l
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+        > =
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+        * n_NUMERIC_SCALAR
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+     * n_STATEMENT
+      * n_CLASS_MEMBER_DECLARATION_LIST
+       * n_CLASS_MEMBER_MODIFIER_LIST
+        * n_STRING
+         > public
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+        * n_STRING
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+       * n_CLASS_MEMBER_DECLARATION
+        * n_VARIABLE
+         > $m
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+        > =
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+        * n_NUMERIC_SCALAR
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+        > " "
+        > =
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+        * n_NUMERIC_SCALAR
+         > 5
+      > ;
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+     * n_STATEMENT
+      * n_METHOD_DECLARATION
+       * n_METHOD_MODIFIER_LIST
+       * n_EMPTY
+       * n_STRING
+        > m
+       * n_DECLARATION_PARAMETER_LIST
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+       * n_EMPTY
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+       * n_STATEMENT_LIST
+        > {
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+     > "\n  "
+     * n_STATEMENT
+      * n_METHOD_DECLARATION
+       * n_METHOD_MODIFIER_LIST
+        * n_STRING
+         > public
+       * n_EMPTY
+       * n_STRING
+        > m2
+       * n_DECLARATION_PARAMETER_LIST
+        > (
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+       * n_EMPTY
+       * n_EMPTY
+       * n_STATEMENT_LIST
+        > {
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+     > "\n  "
+     * n_STATEMENT
+      * n_METHOD_DECLARATION
+       * n_METHOD_MODIFIER_LIST
+        * n_STRING
+         > protected
+       * n_EMPTY
+       * n_STRING
+        > m3
+       * n_DECLARATION_PARAMETER_LIST
+        > (
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+       * n_EMPTY
+       * n_EMPTY
+       * n_STATEMENT_LIST
+        > {
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+     > "\n  "
+     * n_STATEMENT
+      * n_METHOD_DECLARATION
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+         > private
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+       * n_STRING
+        > m4
+       * n_DECLARATION_PARAMETER_LIST
+        > (
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+       * n_EMPTY
+       * n_EMPTY
+       * n_STATEMENT_LIST
+        > {
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+     * n_STATEMENT
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+       * n_EMPTY
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+       * n_STATEMENT_LIST
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+     * n_STATEMENT
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+       * n_METHOD_MODIFIER_LIST
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+         > static
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+       * n_DECLARATION_PARAMETER_LIST
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+       * n_EMPTY
+       * n_EMPTY
+       * n_STATEMENT_LIST
+        > {
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+  * n_STATEMENT
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+    * n_CLASS_ATTRIBUTES
+     * n_STRING
+      > abstract
+     > " "
+     > class
+    > " "
+    * n_CLASS_NAME
+     > U
+    * n_EMPTY
+    * n_EMPTY
+    * n_STATEMENT_LIST
+     > {
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+     * n_STATEMENT
+      * n_METHOD_DECLARATION
+       * n_METHOD_MODIFIER_LIST
+        * n_STRING
+         > abstract
+       * n_EMPTY
+       * n_STRING
+        > v
+       * n_DECLARATION_PARAMETER_LIST
+        > (
+        > )
+       * n_EMPTY
+       * n_EMPTY
+       * n_EMPTY
+     > ;
+     > "\n"
+     > }
+  > "\n\n"
+  * n_STATEMENT
+   * n_INTERFACE_DECLARATION
+    * n_CLASS_ATTRIBUTES
+    * n_CLASS_NAME
+     > N
+    * n_EMPTY
+    * n_EMPTY
+    * n_STATEMENT_LIST
+     > {
+     > }
+  > "\n"
+  * n_STATEMENT
+   * n_INTERFACE_DECLARATION
+    * n_CLASS_ATTRIBUTES
+    * n_CLASS_NAME
+     > O
+    > " "
+    * n_EXTENDS_LIST
+     > extends
+     > " "
+     * n_CLASS_NAME
+      > P
+    * n_EMPTY
+    * n_STATEMENT_LIST
+     > {
+     > }
+  > "\n"
+  * n_STATEMENT
+   * n_INTERFACE_DECLARATION
+    * n_CLASS_ATTRIBUTES
+    * n_CLASS_NAME
+     > Q
+    > " "
+    * n_EXTENDS_LIST
+     > extends
+     > " "
+     * n_CLASS_NAME
+      > R
+     > ,
+     > " "
+     * n_CLASS_NAME
+      > S
+    * n_EMPTY
+    * n_STATEMENT_LIST
+     > {
+     > }
+  > "\n\n"
+  * n_STATEMENT
+   * n_USE_LIST
+    > use
+    > " "
+    * n_USE
+     * n_SYMBOL_NAME
+      > z
+     * n_EMPTY
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_USE_LIST
+    > use
+    > " "
+    * n_USE
+     * n_SYMBOL_NAME
+      > aa
+     * n_EMPTY
+    > ,
+    > " "
+    * n_USE
+     * n_SYMBOL_NAME
+      > ab
+     * n_EMPTY
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_USE_LIST
+    > use
+    > " "
+    * n_USE
+     * n_SYMBOL_NAME
+      > qq
+     > " "
+     > as
+     > " "
+     * n_STRING
+      > rr
+    > ,
+    > " "
+    * n_USE
+     * n_SYMBOL_NAME
+      > mm
+     > " "
+     > as
+     > " "
+     * n_STRING
+      > nn
+    > ,
+    > " "
+    * n_USE
+     * n_SYMBOL_NAME
+      > "\"
+      > oo
+     * n_EMPTY
+    > ,
+    > " "
+    * n_USE
+     * n_SYMBOL_NAME
+      > "\"
+      > pp
+     > " "
+     > as
+     > " "
+     * n_STRING
+      > qq
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_CONSTANT_DECLARATION_LIST
+    > const
+    > " "
+    * n_CONSTANT_DECLARATION
+     * n_STRING
+      > F
+     > " "
+     > =
+     > " "
+     * n_NUMERIC_SCALAR
+      > 1
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_CONSTANT_DECLARATION_LIST
+    > const
+    > " "
+    * n_CONSTANT_DECLARATION
+     * n_STRING
+      > G
+     > " "
+     > =
+     > " "
+     * n_NUMERIC_SCALAR
+      > 2
+    > ,
+    > " "
+    * n_CONSTANT_DECLARATION
+     * n_STRING
+      > H
+     > " "
+     > =
+     > " "
+     * n_NUMERIC_SCALAR
+      > 3
+   > ;
+  > "\n"
+  * n_LABEL
+   * n_STRING
+    > lbl
+   > :
+  > "\n\n"
+  * n_STATEMENT
+   * n_CONDITION_LIST
+    * n_IF
+     > if
+     > " "
+     * n_CONTROL_CONDITION
+      > (
+      * n_NUMERIC_SCALAR
+       > 1
+      > )
+     > " "
+     * n_STATEMENT_LIST
+      > {
+      > }
+  > "\n"
+  * n_STATEMENT
+   * n_CONDITION_LIST
+    * n_IF
+     > if
+     > " "
+     * n_CONTROL_CONDITION
+      > (
+      * n_NUMERIC_SCALAR
+       > 1
+      > )
+     > " "
+     * n_STATEMENT_LIST
+      > {
+      > }
+    > " "
+    * n_ELSE
+     > else
+     > " "
+     * n_STATEMENT_LIST
+      > {
+      > }
+  > "\n"
+  * n_STATEMENT
+   * n_CONDITION_LIST
+    * n_IF
+     > if
+     > " "
+     * n_CONTROL_CONDITION
+      > (
+      * n_NUMERIC_SCALAR
+       > 1
+      > )
+     > " "
+     * n_STATEMENT_LIST
+      > {
+      > }
+    > " "
+    * n_ELSEIF
+     > elseif
+     > " "
+     * n_CONTROL_CONDITION
+      > (
+      * n_NUMERIC_SCALAR
+       > 2
+      > )
+     > " "
+     * n_STATEMENT_LIST
+      > {
+      > }
+    > " "
+    * n_ELSE
+     > else
+     > " "
+     * n_STATEMENT_LIST
+      > {
+      > }
+  > "\n"
+  * n_STATEMENT
+   * n_CONDITION_LIST
+    * n_IF
+     > if
+     > " "
+     * n_CONTROL_CONDITION
+      > (
+      * n_NUMERIC_SCALAR
+       > 1
+      > )
+     > " "
+     * n_STATEMENT_LIST
+      > {
+      > }
+    > " "
+    * n_ELSEIF
+     > elseif
+     > " "
+     * n_CONTROL_CONDITION
+      > (
+      * n_NUMERIC_SCALAR
+       > 2
+      > )
+     > " "
+     * n_STATEMENT_LIST
+      > {
+      > }
+    > " "
+    * n_ELSEIF
+     > elseif
+     > " "
+     * n_CONTROL_CONDITION
+      > (
+      * n_NUMERIC_SCALAR
+       > 3
+      > )
+     > " "
+     * n_STATEMENT_LIST
+      > {
+      > }
+  > "\n\n"
+  * n_STATEMENT
+   * n_CONDITION_LIST
+    * n_IF
+     > if
+     > " "
+     * n_CONTROL_CONDITION
+      > (
+      * n_NUMERIC_SCALAR
+       > 1
+      > )
+     * n_STATEMENT_LIST
+    * n_EMPTY
+   > ;
+  > "\n\n"
+  * n_STATEMENT
+   * n_CONDITION_LIST
+    * n_IF
+     > if
+     > " "
+     * n_CONTROL_CONDITION
+      > (
+      * n_NUMERIC_SCALAR
+       > 1
+      > )
+     * n_STATEMENT_LIST
+    > :
+    > "\n"
+    * n_ELSE
+     * n_STATEMENT_LIST
+    > :
+    > "\n"
+    > endif
+   > ;
+  > "\n\n"
+  * n_STATEMENT
+   * n_CONDITION_LIST
+    * n_IF
+     > if
+     > " "
+     * n_CONTROL_CONDITION
+      > (
+      * n_NUMERIC_SCALAR
+       > 1
+      > )
+     * n_STATEMENT_LIST
+    > :
+    > "\n"
+    * n_ELSEIF
+     > elseif
+     > " "
+     > (
+     * n_NUMERIC_SCALAR
+      > 2
+     * n_STATEMENT_LIST
+    * n_EMPTY
+   > ;
+  > "\n\n"
+  * n_STATEMENT
+   * n_CONDITION_LIST
+    * n_IF
+     > if
+     > " "
+     * n_CONTROL_CONDITION
+      > (
+      * n_NUMERIC_SCALAR
+       > 1
+      > )
+     * n_STATEMENT_LIST
+    > :
+    > "\n"
+    * n_ELSEIF
+     > elseif
+     > " "
+     > (
+     * n_NUMERIC_SCALAR
+      > 2
+     * n_STATEMENT_LIST
+    > )
+    > :
+    > "\n"
+    * n_ELSEIF
+     > elseif
+     > " "
+     > (
+     * n_NUMERIC_SCALAR
+      > 3
+     * n_STATEMENT_LIST
+    * n_EMPTY
+   > ;
+  > "\n\n"
+  * n_STATEMENT
+   * n_WHILE
+    > while
+    > " "
+    * n_CONTROL_CONDITION
+     > (
+     * n_NUMERIC_SCALAR
+      > 1
+     > )
+    > " "
+    * n_STATEMENT_LIST
+     > {
+     > }
+  > "\n\n"
+  * n_STATEMENT
+   * n_WHILE
+    > while
+    > " "
+    * n_CONTROL_CONDITION
+     > (
+     * n_NUMERIC_SCALAR
+      > 1
+     > )
+    * n_STATEMENT_LIST
+     > :
+     > "\n"
+     > endwhile
+     > ;
+  > "\n\n"
+  * n_STATEMENT
+   * n_DO_WHILE
+    > do
+    > " "
+    * n_STATEMENT_LIST
+     > {
+     > }
+    > " "
+    > while
+    > " "
+    * n_CONTROL_CONDITION
+     > (
+     * n_NUMERIC_SCALAR
+      > 1
+     > )
+   > ;
+  > "\n\n\n"
+  * n_STATEMENT
+   * n_FOR
+    > for
+    > " "
+    * n_FOR_EXPRESSION
+     * n_EMPTY
+     * n_EMPTY
+     * n_EMPTY
+    > " "
+    * n_STATEMENT_LIST
+     > {
+     > }
+  > "\n\n"
+  * n_STATEMENT
+   * n_FOR
+    > for
+    > " "
+    * n_FOR_EXPRESSION
+     * n_EMPTY
+     * n_EMPTY
+     * n_EMPTY
+    * n_STATEMENT_LIST
+     > :
+     > "\n"
+     > endfor
+     > ;
+  > "\n\n"
+  * n_STATEMENT
+   * n_SWITCH
+    > switch
+    > " "
+    * n_CONTROL_CONDITION
+     > (
+     * n_NUMERIC_SCALAR
+      > 1
+     > )
+    > " "
+    * n_STATEMENT_LIST
+     > {
+     > "\n  "
+     * n_CASE
+      > case
+      > " "
+      * n_NUMERIC_SCALAR
+       > 1
+      > :
+      > "\n    "
+      * n_STATEMENT_LIST
+       * n_STATEMENT
+        * n_BREAK
+         * n_EMPTY
+        > ;
+     > "\n  "
+     * n_CASE
+      > case
+      > " "
+      * n_NUMERIC_SCALAR
+       > 2
+      > ;
+      > "\n    "
+      * n_STATEMENT_LIST
+       * n_STATEMENT
+        * n_BREAK
+         * n_EMPTY
+        > ;
+     > "\n  "
+     * n_DEFAULT
+      > default
+      > :
+      > "\n    "
+      * n_STATEMENT_LIST
+       * n_STATEMENT
+        * n_CONTINUE
+         * n_EMPTY
+        > ;
+     > "\n"
+     > }
+  > "\n\n"
+  * n_STATEMENT
+   * n_SWITCH
+    > switch
+    * n_CONTROL_CONDITION
+     > (
+     * n_NUMERIC_SCALAR
+      > 1
+     > )
+    > " "
+    * n_STATEMENT_LIST
+     > {
+     * n_STATEMENT
+      > ;
+     > }
+  > "\n"
+  * n_STATEMENT
+   * n_SWITCH
+    > switch
+    * n_CONTROL_CONDITION
+     > (
+     * n_NUMERIC_SCALAR
+      > 1
+     > )
+    * n_STATEMENT_LIST
+     > :
+     > "\n"
+     > endswitch
+     > ;
+  > "\n\n"
+  * n_STATEMENT
+   * n_BREAK
+    * n_EMPTY
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BREAK
+    > break
+    > " "
+    * n_NUMERIC_SCALAR
+     > 1
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_CONTINUE
+    * n_EMPTY
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_CONTINUE
+    > continue
+    > " "
+    * n_NUMERIC_SCALAR
+     > 1
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_RETURN
+    * n_EMPTY
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_RETURN
+    > return
+    > " "
+    * n_NUMERIC_SCALAR
+     > 1
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_RETURN
+    > return
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n\n"
+  * n_STATEMENT
+   * n_GLOBAL_DECLARATION_LIST
+    > global
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_GLOBAL_DECLARATION_LIST
+    > global
+    > " "
+    * n_VARIABLE
+     > $x
+    > ,
+    > " "
+    * n_VARIABLE
+     > $y
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_GLOBAL_DECLARATION_LIST
+    > global
+    > " "
+    * n_VARIABLE_VARIABLE
+     > $
+     * n_VARIABLE
+      > $q
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_GLOBAL_DECLARATION_LIST
+    > global
+    > " "
+    * n_VARIABLE_VARIABLE
+     > $
+     > {
+     * n_CONCATENATION_LIST
+      * n_VARIABLE
+       > $z
+      * n_OPERATOR
+       > .
+      * n_VARIABLE
+       > $z
+   > }
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_STATIC_DECLARATION_LIST
+    > static
+    > " "
+    * n_STATIC_DECLARATION
+     * n_VARIABLE
+      > $x
+     * n_EMPTY
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_STATIC_DECLARATION_LIST
+    > static
+    > " "
+    * n_STATIC_DECLARATION
+     * n_VARIABLE
+      > $x
+     * n_EMPTY
+    > ,
+    > " "
+    * n_STATIC_DECLARATION
+     * n_VARIABLE
+      > $y
+     * n_EMPTY
+   > ;
+  > "\n\n"
+  * n_STATEMENT
+   * n_ECHO_LIST
+    > echo
+    > " "
+    * n_NUMERIC_SCALAR
+     > 1
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_ECHO_LIST
+    > echo
+    > " "
+    * n_NUMERIC_SCALAR
+     > 1
+    > ,
+    > " "
+    * n_NUMERIC_SCALAR
+     > 2
+   > ;
+  > "\n\n"
+  * n_STATEMENT
+   * n_UNSET_LIST
+    > unset
+    > (
+    * n_VARIABLE
+     > $a
+    > ,
+    > " "
+    * n_VARIABLE
+     > $b
+    > )
+   > ;
+  > "\n\n"
+  * n_STATEMENT
+   * n_FOREACH
+    > foreach
+    > " "
+    * n_FOREACH_EXPRESSION
+     > (
+     * n_VARIABLE
+      > $x
+     * n_EMPTY
+     * n_VARIABLE
+      > $y
+     > )
+    > " "
+    * n_STATEMENT_LIST
+     > {
+     > }
+  > "\n"
+  * n_STATEMENT
+   * n_FOREACH
+    > foreach
+    > " "
+    * n_FOREACH_EXPRESSION
+     > (
+     * n_VARIABLE
+      > $x
+     > " "
+     > as
+     > " "
+     * n_VARIABLE
+      > $k
+     > " "
+     > =>
+     > " "
+     * n_VARIABLE
+      > $y
+     > )
+    > " "
+    * n_STATEMENT_LIST
+     > {
+     > }
+  > "\n"
+  * n_STATEMENT
+   * n_FOREACH
+    > foreach
+    > " "
+    * n_FOREACH_EXPRESSION
+     > (
+     * n_VARIABLE
+      > $x
+     > " "
+     > as
+     > " "
+     * n_VARIABLE
+      > $k
+     > " "
+     > =>
+     > " "
+     * n_VARIABLE_REFERENCE
+      > &
+      * n_VARIABLE
+       > $y
+     > )
+    > " "
+    * n_STATEMENT_LIST
+     > {
+     > }
+  > "\n\n"
+  * n_STATEMENT
+   * n_FOREACH
+    > foreach
+    > " "
+    * n_FOREACH_EXPRESSION
+     > (
+     * n_ARRAY_LITERAL
+      > array
+      * n_ARRAY_VALUE_LIST
+       > (
+       > )
+     * n_EMPTY
+     * n_VARIABLE
+      > $x
+     > )
+    > " "
+    * n_STATEMENT_LIST
+     > {
+     > }
+  > "\n"
+  * n_STATEMENT
+   * n_FOREACH
+    > foreach
+    > " "
+    * n_FOREACH_EXPRESSION
+     > (
+     * n_ARRAY_LITERAL
+      > array
+      * n_ARRAY_VALUE_LIST
+       > (
+       > )
+     > " "
+     > as
+     > " "
+     * n_VARIABLE
+      > $k
+     > " "
+     > =>
+     > " "
+     * n_VARIABLE
+      > $y
+     > )
+    > " "
+    * n_STATEMENT_LIST
+     > {
+     > }
+  > "\n\n"
+  * n_STATEMENT
+   * n_FOREACH
+    > foreach
+    > " "
+    * n_FOREACH_EXPRESSION
+     > (
+     * n_VARIABLE
+      > $x
+     * n_EMPTY
+     * n_VARIABLE
+      > $y
+     > )
+    * n_STATEMENT_LIST
+     > :
+     > "\n"
+     > endforeach
+     > ;
+  > "\n\n"
+  * n_STATEMENT
+   * n_DECLARE
+    > declare
+    > (
+    * n_DECLARE_DECLARATION_LIST
+     * n_DECLARE_DECLARATION
+      * n_STRING
+       > x
+      > =
+      * n_NUMERIC_SCALAR
+       > 1
+    > )
+    * n_STATEMENT
+     * n_EMPTY
+  > "\n\n"
+  * n_STATEMENT
+   * n_DECLARE
+    > declare
+    > (
+    * n_DECLARE_DECLARATION_LIST
+     * n_DECLARE_DECLARATION
+      * n_STRING
+       > y
+      > =
+      * n_NUMERIC_SCALAR
+       > 1
+    > )
+    > " "
+    * n_STATEMENT_LIST
+     > {
+     > "\n"
+     > }
+  > "\n\n"
+  * n_STATEMENT
+   * n_DECLARE
+    > declare
+    > (
+    * n_DECLARE_DECLARATION_LIST
+     * n_DECLARE_DECLARATION
+      * n_STRING
+       > z
+      > =
+      * n_NUMERIC_SCALAR
+       > 1
+    > )
+    * n_STATEMENT_LIST
+     > :
+     > "\n"
+     > enddeclare
+     > ;
+  > "\n\n"
+  * n_STATEMENT
+   * n_TRY
+    > try
+    > " "
+    * n_STATEMENT_LIST
+     > {
+     > }
+    > " "
+    * n_CATCH_LIST
+     * n_CATCH
+      > catch
+      > " "
+      > (
+      * n_CLASS_NAME
+       > C
+      > " "
+      * n_VARIABLE
+       > $x
+      > )
+      > " "
+      * n_STATEMENT_LIST
+       > {
+       > }
+    * n_EMPTY
+  > "\n"
+  * n_STATEMENT
+   * n_TRY
+    > try
+    > " "
+    * n_STATEMENT_LIST
+     > {
+     > }
+    > " "
+    * n_CATCH_LIST
+     * n_CATCH
+      > catch
+      > " "
+      > (
+      * n_CLASS_NAME
+       > C
+      > " "
+      * n_VARIABLE
+       > $x
+      > )
+      > " "
+      * n_STATEMENT_LIST
+       > {
+       > }
+     > " "
+     * n_CATCH
+      > catch
+      > " "
+      > (
+      * n_CLASS_NAME
+       > D
+      > " "
+      * n_VARIABLE
+       > $x
+      > )
+      > " "
+      * n_STATEMENT_LIST
+       > {
+       > }
+    * n_EMPTY
+  > "\n\n"
+  * n_STATEMENT
+   * n_THROW
+    > throw
+    > " "
+    * n_NUMERIC_SCALAR
+     > 1
+   > ;
+  > "\n\n"
+  * n_STATEMENT
+   * n_UNARY_PREFIX_EXPRESSION
+    * n_OPERATOR
+     > clone
+    > " "
+    * n_VARIABLE
+     > $q
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > +
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > -
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > *
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > /
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_CONCATENATION_LIST
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > .
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > %
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > &
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > |
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > ^
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > <<
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > >>
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_UNARY_POSTFIX_EXPRESSION
+    * n_VARIABLE
+     > $x
+    * n_OPERATOR
+     > ++
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_UNARY_PREFIX_EXPRESSION
+    * n_OPERATOR
+     > ++
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_UNARY_POSTFIX_EXPRESSION
+    * n_VARIABLE
+     > $x
+    * n_OPERATOR
+     > --
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_UNARY_PREFIX_EXPRESSION
+    * n_OPERATOR
+     > --
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_UNARY_PREFIX_EXPRESSION
+    * n_OPERATOR
+     > +
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_UNARY_PREFIX_EXPRESSION
+    * n_OPERATOR
+     > -
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_UNARY_PREFIX_EXPRESSION
+    * n_OPERATOR
+     > !
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_UNARY_PREFIX_EXPRESSION
+    * n_OPERATOR
+     > ~
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > ==
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > ===
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > !=
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > !==
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > =
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > <
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > <=
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > >
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > >=
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > instanceof
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_PARENTHETICAL_EXPRESSION
+    > (
+    * n_VARIABLE
+     > $x
+    > )
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_PARENTHETICAL_EXPRESSION
+    > (
+    * n_TERNARY_EXPRESSION
+     * n_VARIABLE
+      > $x
+     > " "
+     * n_OPERATOR
+      > ?
+     > " "
+     * n_VARIABLE
+      > $x
+     > " "
+     * n_OPERATOR
+      > :
+     > " "
+     * n_VARIABLE
+      > $x
+    > )
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_PARENTHETICAL_EXPRESSION
+    > (
+    * n_TERNARY_EXPRESSION
+     * n_VARIABLE
+      > $x
+     > " "
+     * n_OPERATOR
+      > ?
+     * n_EMPTY
+     * n_OPERATOR
+      > :
+     > " "
+     * n_VARIABLE
+      > $x
+    > )
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > ||
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > &&
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > and
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > or
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > xor
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > +=
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > -=
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > *=
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > /=
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > .=
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > %=
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > &=
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > |=
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > ^=
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > <<=
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $x
+    > " "
+    * n_OPERATOR
+     > >>=
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_CAST_EXPRESSION
+    * n_CAST
+     > (int)
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_CAST_EXPRESSION
+    * n_CAST
+     > (double)
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_CAST_EXPRESSION
+    * n_CAST
+     > (string)
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_CAST_EXPRESSION
+    * n_CAST
+     > (binary)
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_CAST_EXPRESSION
+    * n_CAST
+     > (array)
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_CAST_EXPRESSION
+    * n_CAST
+     > (object)
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_CAST_EXPRESSION
+    * n_CAST
+     > (bool)
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_CAST_EXPRESSION
+    * n_CAST
+     > (unset)
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_INDEX_ACCESS
+     * n_VARIABLE
+      > $x
+     * n_EMPTY
+    > " "
+    * n_OPERATOR
+     > =
+    > " "
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n\n"
+  * n_STATEMENT
+   * n_UNARY_PREFIX_EXPRESSION
+    * n_OPERATOR
+     > @
+    * n_VARIABLE
+     > $x
+   > ;
+  > "\n\n"
+  * n_STATEMENT
+   * n_MAGIC_SCALAR
+    > __LINE__
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_MAGIC_SCALAR
+    > __FILE__
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_MAGIC_SCALAR
+    > __DIR__
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_MAGIC_SCALAR
+    > __CLASS__
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_MAGIC_SCALAR
+    > __METHOD__
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_MAGIC_SCALAR
+    > __FUNCTION__
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_MAGIC_SCALAR
+    > __NAMESPACE__
+   > ;
+  > "\n\n"
+  * n_STATEMENT
+   * n_GOTO
+    > goto
+    > " "
+    * n_STRING
+     > lbl
+   > ;
+ > "\n"
diff --git a/src/parser/xhpast/__tests__/data/php-tags.php.test b/src/parser/xhpast/__tests__/data/php-tags.php.test
index d96ae106..ae0412ee 100644
--- a/src/parser/xhpast/__tests__/data/php-tags.php.test
+++ b/src/parser/xhpast/__tests__/data/php-tags.php.test
@@ -1,215 +1,48 @@
 <?php 1; ?>
 <? 1; ?>
 <?= 1; ?>
 <a />
 <b ?>
 ~~~~~~~~~~
 pass, comment="Omits ASP tags since parser support is off as built."
 ~~~~~~~~~~
-{
-  "tree": [
-    9000,
-    0,
-    21,
-    [
-      [
-        9006,
-        0,
-        21,
-        [
-          [
-            9007,
-            0,
-            0
-          ],
-          [
-            9004,
-            2,
-            3,
-            [
-              [
-                9086,
-                2,
-                2
-              ]
-            ]
-          ],
-          [
-            9004,
-            5,
-            5,
-            [
-              [
-                9005
-              ]
-            ]
-          ],
-          [
-            9007,
-            6,
-            6
-          ],
-          [
-            9004,
-            8,
-            9,
-            [
-              [
-                9086,
-                8,
-                8
-              ]
-            ]
-          ],
-          [
-            9004,
-            11,
-            11,
-            [
-              [
-                9005
-              ]
-            ]
-          ],
-          [
-            9007,
-            12,
-            12
-          ],
-          [
-            9004,
-            14,
-            15,
-            [
-              [
-                9086,
-                14,
-                14
-              ]
-            ]
-          ],
-          [
-            9004,
-            17,
-            17,
-            [
-              [
-                9005
-              ]
-            ]
-          ],
-          [
-            9034,
-            18,
-            18
-          ],
-          [
-            9034,
-            19,
-            19
-          ],
-          [
-            9034,
-            20,
-            20
-          ],
-          [
-            9034,
-            21,
-            21
-          ]
-        ]
-      ]
-    ]
-  ],
-  "stream": [
-    [
-      373,
-      5
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      309,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      376,
-      3
-    ],
-    [
-      373,
-      2
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      309,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      376,
-      3
-    ],
-    [
-      374,
-      3
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      309,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      376,
-      3
-    ],
-    [
-      315,
-      1
-    ],
-    [
-      315,
-      5
-    ],
-    [
-      315,
-      1
-    ],
-    [
-      315,
-      5
-    ]
-  ]
-}
+* n_PROGRAM
+ * n_STATEMENT_LIST
+  * n_OPEN_TAG
+   > <?php
+  > " "
+  * n_STATEMENT
+   * n_NUMERIC_SCALAR
+    > 1
+   > ;
+  > " "
+  * n_STATEMENT
+   * n_EMPTY
+  * n_OPEN_TAG
+   > <?
+  > " "
+  * n_STATEMENT
+   * n_NUMERIC_SCALAR
+    > 1
+   > ;
+  > " "
+  * n_STATEMENT
+   * n_EMPTY
+  * n_OPEN_TAG
+   > <?=
+  > " "
+  * n_STATEMENT
+   * n_NUMERIC_SCALAR
+    > 1
+   > ;
+  > " "
+  * n_STATEMENT
+   * n_EMPTY
+  * n_INLINE_HTML
+   > <
+  * n_INLINE_HTML
+   > "a />\n"
+  * n_INLINE_HTML
+   > <
+  * n_INLINE_HTML
+   > "b ?>\n"
diff --git a/src/parser/xhpast/__tests__/data/php-traits.php.test b/src/parser/xhpast/__tests__/data/php-traits.php.test
index 060ea50c..93069f1f 100644
--- a/src/parser/xhpast/__tests__/data/php-traits.php.test
+++ b/src/parser/xhpast/__tests__/data/php-traits.php.test
@@ -1,938 +1,215 @@
 <?php
 
 trait T {
   function f() {}
 }
 
 class C {
   use T;
 }
 
 class D {
   use T, U;
 }
 
 class E {
   use T, U {
     T::x insteadof U;
     T::x as y;
     T::z as private z;
   }
 }
 
 class F {
   use Q { q as protected; }
 }
 ~~~~~~~~~~
 pass
 ~~~~~~~~~~
-{
-  "tree": [
-    9000,
-    0,
-    118,
-    [
-      [
-        9006,
-        0,
-        117,
-        [
-          [
-            9007,
-            0,
-            0
-          ],
-          [
-            9004,
-            2,
-            17,
-            [
-              [
-                9051,
-                2,
-                17,
-                [
-                  [
-                    9052,
-                    2,
-                    2,
-                    [
-                      [
-                        9013,
-                        2,
-                        2
-                      ]
-                    ]
-                  ],
-                  [
-                    9090,
-                    4,
-                    4
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9006,
-                    6,
-                    17,
-                    [
-                      [
-                        9004,
-                        8,
-                        15,
-                        [
-                          [
-                            9067,
-                            8,
-                            15,
-                            [
-                              [
-                                9068
-                              ],
-                              [
-                                9005
-                              ],
-                              [
-                                9013,
-                                10,
-                                10
-                              ],
-                              [
-                                9059,
-                                11,
-                                12
-                              ],
-                              [
-                                9005
-                              ],
-                              [
-                                9005
-                              ],
-                              [
-                                9006,
-                                14,
-                                15
-                              ]
-                            ]
-                          ]
-                        ]
-                      ]
-                    ]
-                  ]
-                ]
-              ]
-            ]
-          ],
-          [
-            9004,
-            19,
-            30,
-            [
-              [
-                9051,
-                19,
-                30,
-                [
-                  [
-                    9052,
-                    19,
-                    19
-                  ],
-                  [
-                    9090,
-                    21,
-                    21
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9006,
-                    23,
-                    30,
-                    [
-                      [
-                        9105,
-                        25,
-                        27,
-                        [
-                          [
-                            9090,
-                            27,
-                            27
-                          ],
-                          [
-                            9005
-                          ]
-                        ]
-                      ]
-                    ]
-                  ]
-                ]
-              ]
-            ]
-          ],
-          [
-            9004,
-            32,
-            46,
-            [
-              [
-                9051,
-                32,
-                46,
-                [
-                  [
-                    9052,
-                    32,
-                    32
-                  ],
-                  [
-                    9090,
-                    34,
-                    34
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9006,
-                    36,
-                    46,
-                    [
-                      [
-                        9105,
-                        38,
-                        43,
-                        [
-                          [
-                            9090,
-                            40,
-                            40
-                          ],
-                          [
-                            9090,
-                            43,
-                            43
-                          ],
-                          [
-                            9005
-                          ]
-                        ]
-                      ]
-                    ]
-                  ]
-                ]
-              ]
-            ]
-          ],
-          [
-            9004,
-            48,
-            94,
-            [
-              [
-                9051,
-                48,
-                94,
-                [
-                  [
-                    9052,
-                    48,
-                    48
-                  ],
-                  [
-                    9090,
-                    50,
-                    50
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9006,
-                    52,
-                    94,
-                    [
-                      [
-                        9105,
-                        54,
-                        92,
-                        [
-                          [
-                            9090,
-                            56,
-                            56
-                          ],
-                          [
-                            9090,
-                            59,
-                            59
-                          ],
-                          [
-                            9107,
-                            61,
-                            92,
-                            [
-                              [
-                                9108,
-                                63,
-                                70,
-                                [
-                                  [
-                                    9110,
-                                    63,
-                                    65
-                                  ],
-                                  [
-                                    9109,
-                                    69,
-                                    69,
-                                    [
-                                      [
-                                        9090,
-                                        69,
-                                        69
-                                      ]
-                                    ]
-                                  ]
-                                ]
-                              ],
-                              [
-                                9111,
-                                72,
-                                79,
-                                [
-                                  [
-                                    9110,
-                                    72,
-                                    74
-                                  ],
-                                  [
-                                    9005
-                                  ],
-                                  [
-                                    9013,
-                                    78,
-                                    78
-                                  ]
-                                ]
-                              ],
-                              [
-                                9111,
-                                81,
-                                90,
-                                [
-                                  [
-                                    9110,
-                                    81,
-                                    83
-                                  ],
-                                  [
-                                    9068,
-                                    87,
-                                    87,
-                                    [
-                                      [
-                                        9013,
-                                        87,
-                                        87
-                                      ]
-                                    ]
-                                  ],
-                                  [
-                                    9013,
-                                    89,
-                                    89
-                                  ]
-                                ]
-                              ]
-                            ]
-                          ]
-                        ]
-                      ]
-                    ]
-                  ]
-                ]
-              ]
-            ]
-          ],
-          [
-            9004,
-            96,
-            117,
-            [
-              [
-                9051,
-                96,
-                117,
-                [
-                  [
-                    9052,
-                    96,
-                    96
-                  ],
-                  [
-                    9090,
-                    98,
-                    98
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9006,
-                    100,
-                    117,
-                    [
-                      [
-                        9105,
-                        102,
-                        115,
-                        [
-                          [
-                            9090,
-                            104,
-                            104
-                          ],
-                          [
-                            9107,
-                            106,
-                            115,
-                            [
-                              [
-                                9111,
-                                108,
-                                113,
-                                [
-                                  [
-                                    9110,
-                                    108,
-                                    108,
-                                    [
-                                      [
-                                        9013,
-                                        108,
-                                        108
-                                      ]
-                                    ]
-                                  ],
-                                  [
-                                    0,
-                                    112,
-                                    112
-                                  ],
-                                  [
-                                    9005
-                                  ]
-                                ]
-                              ]
-                            ]
-                          ]
-                        ]
-                      ]
-                    ]
-                  ]
-                ]
-              ]
-            ]
-          ]
-        ]
-      ]
-    ]
-  ],
-  "stream": [
-    [
-      373,
-      5
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      392,
-      5
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      377,
-      3
-    ],
-    [
-      339,
-      8
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      358,
-      5
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      377,
-      3
-    ],
-    [
-      345,
-      3
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      358,
-      5
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      377,
-      3
-    ],
-    [
-      345,
-      3
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      44,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      358,
-      5
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      377,
-      3
-    ],
-    [
-      345,
-      3
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      44,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      377,
-      5
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      383,
-      2
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      390,
-      9
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      5
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      383,
-      2
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      331,
-      2
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      5
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      383,
-      2
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      331,
-      2
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      350,
-      7
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      3
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      358,
-      5
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      377,
-      3
-    ],
-    [
-      345,
-      3
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      331,
-      2
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      351,
-      9
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      1
-    ]
-  ]
-}
+* n_PROGRAM
+ * n_STATEMENT_LIST
+  * n_OPEN_TAG
+   > <?php
+  > "\n\n"
+  * n_STATEMENT
+   * n_CLASS_DECLARATION
+    * n_CLASS_ATTRIBUTES
+     * n_STRING
+      > trait
+    > " "
+    * n_CLASS_NAME
+     > T
+    * n_EMPTY
+    * n_EMPTY
+    * n_STATEMENT_LIST
+     > {
+     > "\n  "
+     * n_STATEMENT
+      * n_METHOD_DECLARATION
+       * n_METHOD_MODIFIER_LIST
+       * n_EMPTY
+       * n_STRING
+        > f
+       * n_DECLARATION_PARAMETER_LIST
+        > (
+        > )
+       * n_EMPTY
+       * n_EMPTY
+       * n_STATEMENT_LIST
+        > {
+        > }
+     > "\n"
+     > }
+  > "\n\n"
+  * n_STATEMENT
+   * n_CLASS_DECLARATION
+    * n_CLASS_ATTRIBUTES
+     > class
+    > " "
+    * n_CLASS_NAME
+     > C
+    * n_EMPTY
+    * n_EMPTY
+    * n_STATEMENT_LIST
+     > {
+     > "\n  "
+     * n_TRAIT_USE
+      > use
+      > " "
+      * n_CLASS_NAME
+       > T
+      * n_EMPTY
+     > ;
+     > "\n"
+     > }
+  > "\n\n"
+  * n_STATEMENT
+   * n_CLASS_DECLARATION
+    * n_CLASS_ATTRIBUTES
+     > class
+    > " "
+    * n_CLASS_NAME
+     > D
+    * n_EMPTY
+    * n_EMPTY
+    * n_STATEMENT_LIST
+     > {
+     > "\n  "
+     * n_TRAIT_USE
+      > use
+      > " "
+      * n_CLASS_NAME
+       > T
+      > ,
+      > " "
+      * n_CLASS_NAME
+       > U
+      * n_EMPTY
+     > ;
+     > "\n"
+     > }
+  > "\n\n"
+  * n_STATEMENT
+   * n_CLASS_DECLARATION
+    * n_CLASS_ATTRIBUTES
+     > class
+    > " "
+    * n_CLASS_NAME
+     > E
+    * n_EMPTY
+    * n_EMPTY
+    * n_STATEMENT_LIST
+     > {
+     > "\n  "
+     * n_TRAIT_USE
+      > use
+      > " "
+      * n_CLASS_NAME
+       > T
+      > ,
+      > " "
+      * n_CLASS_NAME
+       > U
+      > " "
+      * n_TRAIT_ADAPTATION_LIST
+       > {
+       > "\n    "
+       * n_TRAIT_INSTEADOF
+        * n_TRAIT_METHOD_REFERENCE
+         > T
+         > ::
+         > x
+        > " "
+        > insteadof
+        > " "
+        * n_TRAIT_REFERENCE_LIST
+         * n_CLASS_NAME
+          > U
+        > ;
+       > "\n    "
+       * n_TRAIT_AS
+        * n_TRAIT_METHOD_REFERENCE
+         > T
+         > ::
+         > x
+        * n_EMPTY
+        * n_STRING
+         > y
+        > ;
+       > "\n    "
+       * n_TRAIT_AS
+        * n_TRAIT_METHOD_REFERENCE
+         > T
+         > ::
+         > z
+        > " "
+        > as
+        > " "
+        * n_METHOD_MODIFIER_LIST
+         * n_STRING
+          > private
+        > " "
+        * n_STRING
+         > z
+        > ;
+       > "\n  "
+       > }
+     > "\n"
+     > }
+  > "\n\n"
+  * n_STATEMENT
+   * n_CLASS_DECLARATION
+    * n_CLASS_ATTRIBUTES
+     > class
+    > " "
+    * n_CLASS_NAME
+     > F
+    * n_EMPTY
+    * n_EMPTY
+    * n_STATEMENT_LIST
+     > {
+     > "\n  "
+     * n_TRAIT_USE
+      > use
+      > " "
+      * n_CLASS_NAME
+       > Q
+      > " "
+      * n_TRAIT_ADAPTATION_LIST
+       > {
+       > " "
+       * n_TRAIT_AS
+        * n_TRAIT_METHOD_REFERENCE
+         * n_STRING
+          > q
+        > " "
+        > as
+        > " "
+        * "<INVALID TYPE \"0\">"
+         > protected
+        * n_EMPTY
+       > " "
+       > }
+     > "\n"
+     > }
+ > "\n"
diff --git a/src/parser/xhpast/__tests__/data/php-yield.php.test b/src/parser/xhpast/__tests__/data/php-yield.php.test
index fd3532cf..c4d36512 100644
--- a/src/parser/xhpast/__tests__/data/php-yield.php.test
+++ b/src/parser/xhpast/__tests__/data/php-yield.php.test
@@ -1,449 +1,100 @@
 <?php
 
 function g() {
   yield;
   yield $x;
   yield $y => $z;
 
   $data = (yield $a);
   $data = (yield $b => $c);
 }
 ~~~~~~~~~~
 pass
 ~~~~~~~~~~
-{
-  "tree": [
-    9000,
-    0,
-    54,
-    [
-      [
-        9006,
-        0,
-        53,
-        [
-          [
-            9007,
-            0,
-            0
-          ],
-          [
-            9004,
-            2,
-            53,
-            [
-              [
-                9050,
-                2,
-                53,
-                [
-                  [
-                    9005
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9013,
-                    4,
-                    4
-                  ],
-                  [
-                    9059,
-                    5,
-                    6
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9006,
-                    8,
-                    53,
-                    [
-                      [
-                        9004,
-                        10,
-                        11,
-                        [
-                          [
-                            9112,
-                            10,
-                            10,
-                            [
-                              [
-                                9005
-                              ],
-                              [
-                                9005
-                              ]
-                            ]
-                          ]
-                        ]
-                      ],
-                      [
-                        9004,
-                        13,
-                        16,
-                        [
-                          [
-                            9112,
-                            13,
-                            15,
-                            [
-                              [
-                                9047,
-                                15,
-                                15,
-                                [
-                                  [
-                                    9005
-                                  ]
-                                ]
-                              ]
-                            ]
-                          ]
-                        ]
-                      ],
-                      [
-                        9004,
-                        18,
-                        25,
-                        [
-                          [
-                            9112,
-                            18,
-                            24,
-                            [
-                              [
-                                9047,
-                                20,
-                                20
-                              ],
-                              [
-                                9047,
-                                24,
-                                24
-                              ]
-                            ]
-                          ]
-                        ]
-                      ],
-                      [
-                        9004,
-                        27,
-                        36,
-                        [
-                          [
-                            9077,
-                            27,
-                            35,
-                            [
-                              [
-                                9047,
-                                27,
-                                27
-                              ],
-                              [
-                                9081,
-                                29,
-                                29
-                              ],
-                              [
-                                9112,
-                                31,
-                                35,
-                                [
-                                  [
-                                    9047,
-                                    34,
-                                    34,
-                                    [
-                                      [
-                                        9005
-                                      ]
-                                    ]
-                                  ]
-                                ]
-                              ]
-                            ]
-                          ]
-                        ]
-                      ],
-                      [
-                        9004,
-                        38,
-                        51,
-                        [
-                          [
-                            9077,
-                            38,
-                            50,
-                            [
-                              [
-                                9047,
-                                38,
-                                38
-                              ],
-                              [
-                                9081,
-                                40,
-                                40
-                              ],
-                              [
-                                9112,
-                                42,
-                                50,
-                                [
-                                  [
-                                    9047,
-                                    45,
-                                    45
-                                  ],
-                                  [
-                                    9047,
-                                    49,
-                                    49
-                                  ]
-                                ]
-                              ]
-                            ]
-                          ]
-                        ]
-                      ]
-                    ]
-                  ]
-                ]
-              ]
-            ]
-          ]
-        ]
-      ]
-    ]
-  ],
-  "stream": [
-    [
-      373,
-      5
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      339,
-      8
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      377,
-      3
-    ],
-    [
-      394,
-      5
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      3
-    ],
-    [
-      394,
-      5
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      313,
-      2
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      3
-    ],
-    [
-      394,
-      5
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      313,
-      2
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      363,
-      2
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      313,
-      2
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      4
-    ],
-    [
-      313,
-      5
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      61,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      394,
-      5
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      313,
-      2
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      3
-    ],
-    [
-      313,
-      5
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      61,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      394,
-      5
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      313,
-      2
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      363,
-      2
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      313,
-      2
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      1
-    ]
-  ]
-}
+* n_PROGRAM
+ * n_STATEMENT_LIST
+  * n_OPEN_TAG
+   > <?php
+  > "\n\n"
+  * n_STATEMENT
+   * n_FUNCTION_DECLARATION
+    * n_EMPTY
+    * n_EMPTY
+    * n_STRING
+     > g
+    * n_DECLARATION_PARAMETER_LIST
+     > (
+     > )
+    * n_EMPTY
+    * n_EMPTY
+    * n_STATEMENT_LIST
+     > {
+     > "\n  "
+     * n_STATEMENT
+      * n_YIELD
+       * n_EMPTY
+       * n_EMPTY
+      > ;
+     > "\n  "
+     * n_STATEMENT
+      * n_YIELD
+       > yield
+       > " "
+       * n_VARIABLE
+        * n_EMPTY
+      > ;
+     > "\n  "
+     * n_STATEMENT
+      * n_YIELD
+       > yield
+       > " "
+       * n_VARIABLE
+        > $y
+       > " "
+       > =>
+       > " "
+       * n_VARIABLE
+        > $z
+      > ;
+     > "\n\n  "
+     * n_STATEMENT
+      * n_BINARY_EXPRESSION
+       * n_VARIABLE
+        > $data
+       > " "
+       * n_OPERATOR
+        > =
+       > " "
+       * n_YIELD
+        > (
+        > yield
+        > " "
+        * n_VARIABLE
+         * n_EMPTY
+        > )
+      > ;
+     > "\n  "
+     * n_STATEMENT
+      * n_BINARY_EXPRESSION
+       * n_VARIABLE
+        > $data
+       > " "
+       * n_OPERATOR
+        > =
+       > " "
+       * n_YIELD
+        > (
+        > yield
+        > " "
+        * n_VARIABLE
+         > $b
+        > " "
+        > =>
+        > " "
+        * n_VARIABLE
+         > $c
+        > )
+      > ;
+     > "\n"
+     > }
+ > "\n"
diff --git a/src/parser/xhpast/__tests__/data/return-type.php.test b/src/parser/xhpast/__tests__/data/return-type.php.test
index 6b3c4737..25160b77 100644
--- a/src/parser/xhpast/__tests__/data/return-type.php.test
+++ b/src/parser/xhpast/__tests__/data/return-type.php.test
@@ -1,2197 +1,440 @@
 <?php
 
 function a(): string {}
 
 function b(): array {}
 
 function c(): callable {}
 
 function d(): ?string {}
 
 function e(): void {}
 
 // TODO: This shouldn't technically be allowed as it will cause a fatal error.
 function f(): ?void {}
 
 class a {
   function b(): string {}
   function c(): array {}
   function d(): callable {}
 }
 
 $funcs = [
   function (): string {},
   function (): array {},
   function (): callable {},
   function (): ?string {},
   function (): void {},
 
   static function (): string {},
   static function (): array {},
   static function (): callable {},
   static function (): ?string {},
   static function (): void {},
 ];
 
 ~~~~~~~~~~
 pass
 ~~~~~~~~~~
-{
-  "tree": [
-    9000,
-    0,
-    261,
-    [
-      [
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-                      [
-                        9090,
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-                        9
-                      ]
-                    ]
-                  ],
-                  [
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-                    11,
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-                  ]
-                ]
-              ]
-            ]
-          ],
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-                              [
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-                              ]
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-                          ]
-                        ]
-                      ]
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-          [
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-                                  [
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-                                  [
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-                                ]
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-  "stream": [
-    [
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-    [
-      377,
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-    ],
-    [
-      339,
-      8
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
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-    [
-      40,
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-    [
-      41,
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-      58,
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-    [
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-      311,
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-}
+* n_PROGRAM
+ * n_STATEMENT_LIST
+  * n_OPEN_TAG
+   > <?php
+  > "\n\n"
+  * n_STATEMENT
+   * n_FUNCTION_DECLARATION
+    * n_EMPTY
+    * n_EMPTY
+    * n_STRING
+     > a
+    * n_DECLARATION_PARAMETER_LIST
+     > (
+     > )
+    * n_EMPTY
+    * n_DECLARATION_RETURN
+     * n_CLASS_NAME
+      > string
+    > " "
+    * n_STATEMENT_LIST
+     > {
+     > }
+  > "\n\n"
+  * n_STATEMENT
+   * n_FUNCTION_DECLARATION
+    * n_EMPTY
+    * n_EMPTY
+    * n_STRING
+     > b
+    * n_DECLARATION_PARAMETER_LIST
+     > (
+     > )
+    * n_EMPTY
+    * n_DECLARATION_RETURN
+     * n_TYPE_NAME
+      > array
+    > " "
+    * n_STATEMENT_LIST
+     > {
+     > }
+  > "\n\n"
+  * n_STATEMENT
+   * n_FUNCTION_DECLARATION
+    * n_EMPTY
+    * n_EMPTY
+    * n_STRING
+     > c
+    * n_DECLARATION_PARAMETER_LIST
+     > (
+     > )
+    * n_EMPTY
+    * n_DECLARATION_RETURN
+     * n_TYPE_NAME
+      > callable
+    > " "
+    * n_STATEMENT_LIST
+     > {
+     > }
+  > "\n\n"
+  * n_STATEMENT
+   * n_FUNCTION_DECLARATION
+    * n_EMPTY
+    * n_EMPTY
+    * n_STRING
+     > d
+    * n_DECLARATION_PARAMETER_LIST
+     > (
+     > )
+    * n_EMPTY
+    * n_DECLARATION_RETURN
+     * n_NULLABLE_TYPE
+      * n_CLASS_NAME
+       > string
+    > " "
+    * n_STATEMENT_LIST
+     > {
+     > }
+  > "\n\n"
+  * n_STATEMENT
+   * n_FUNCTION_DECLARATION
+    * n_EMPTY
+    * n_EMPTY
+    * n_STRING
+     > e
+    * n_DECLARATION_PARAMETER_LIST
+     > (
+     > )
+    * n_EMPTY
+    * n_DECLARATION_RETURN
+     * n_CLASS_NAME
+      > void
+    > " "
+    * n_STATEMENT_LIST
+     > {
+     > }
+  > "\n\n"
+  > "// TODO: This shouldn't technically be allowed as it will cause a fatal er"
+  . "ror.\n"
+  * n_STATEMENT
+   * n_FUNCTION_DECLARATION
+    * n_EMPTY
+    * n_EMPTY
+    * n_STRING
+     > f
+    * n_DECLARATION_PARAMETER_LIST
+     > (
+     > )
+    * n_EMPTY
+    * n_DECLARATION_RETURN
+     * n_NULLABLE_TYPE
+      * n_CLASS_NAME
+       > void
+    > " "
+    * n_STATEMENT_LIST
+     > {
+     > }
+  > "\n\n"
+  * n_STATEMENT
+   * n_CLASS_DECLARATION
+    * n_CLASS_ATTRIBUTES
+     > class
+    > " "
+    * n_CLASS_NAME
+     > a
+    * n_EMPTY
+    * n_EMPTY
+    * n_STATEMENT_LIST
+     > {
+     > "\n  "
+     * n_STATEMENT
+      * n_METHOD_DECLARATION
+       * n_METHOD_MODIFIER_LIST
+       * n_EMPTY
+       * n_STRING
+        > b
+       * n_DECLARATION_PARAMETER_LIST
+        > (
+        > )
+       * n_EMPTY
+       * n_DECLARATION_RETURN
+        * n_CLASS_NAME
+         > string
+       > " "
+       * n_STATEMENT_LIST
+        > {
+        > }
+     > "\n  "
+     * n_STATEMENT
+      * n_METHOD_DECLARATION
+       * n_METHOD_MODIFIER_LIST
+       * n_EMPTY
+       * n_STRING
+        > c
+       * n_DECLARATION_PARAMETER_LIST
+        > (
+        > )
+       * n_EMPTY
+       * n_DECLARATION_RETURN
+        * n_TYPE_NAME
+         > array
+       > " "
+       * n_STATEMENT_LIST
+        > {
+        > }
+     > "\n  "
+     * n_STATEMENT
+      * n_METHOD_DECLARATION
+       * n_METHOD_MODIFIER_LIST
+       * n_EMPTY
+       * n_STRING
+        > d
+       * n_DECLARATION_PARAMETER_LIST
+        > (
+        > )
+       * n_EMPTY
+       * n_DECLARATION_RETURN
+        * n_TYPE_NAME
+         > callable
+       > " "
+       * n_STATEMENT_LIST
+        > {
+        > }
+     > "\n"
+     > }
+  > "\n\n"
+  * n_STATEMENT
+   * n_BINARY_EXPRESSION
+    * n_VARIABLE
+     > $funcs
+    > " "
+    * n_OPERATOR
+     > =
+    > " "
+    * n_ARRAY_LITERAL
+     * n_ARRAY_VALUE_LIST
+      > [
+      > "\n  "
+      * n_ARRAY_VALUE
+       * n_EMPTY
+       * n_FUNCTION_DECLARATION
+        * n_EMPTY
+        * n_EMPTY
+        * n_EMPTY
+        * n_DECLARATION_PARAMETER_LIST
+         > (
+         > )
+        * n_EMPTY
+        * n_DECLARATION_RETURN
+         * n_CLASS_NAME
+          > string
+        > " "
+        * n_STATEMENT_LIST
+         > {
+         > }
+      > ,
+      > "\n  "
+      * n_ARRAY_VALUE
+       * n_EMPTY
+       * n_FUNCTION_DECLARATION
+        * n_EMPTY
+        * n_EMPTY
+        * n_EMPTY
+        * n_DECLARATION_PARAMETER_LIST
+         > (
+         > )
+        * n_EMPTY
+        * n_DECLARATION_RETURN
+         * n_TYPE_NAME
+          > array
+        > " "
+        * n_STATEMENT_LIST
+         > {
+         > }
+      > ,
+      > "\n  "
+      * n_ARRAY_VALUE
+       * n_EMPTY
+       * n_FUNCTION_DECLARATION
+        * n_EMPTY
+        * n_EMPTY
+        * n_EMPTY
+        * n_DECLARATION_PARAMETER_LIST
+         > (
+         > )
+        * n_EMPTY
+        * n_DECLARATION_RETURN
+         * n_TYPE_NAME
+          > callable
+        > " "
+        * n_STATEMENT_LIST
+         > {
+         > }
+      > ,
+      > "\n  "
+      * n_ARRAY_VALUE
+       * n_EMPTY
+       * n_FUNCTION_DECLARATION
+        * n_EMPTY
+        * n_EMPTY
+        * n_EMPTY
+        * n_DECLARATION_PARAMETER_LIST
+         > (
+         > )
+        * n_EMPTY
+        * n_DECLARATION_RETURN
+         * n_NULLABLE_TYPE
+          * n_CLASS_NAME
+           > string
+        > " "
+        * n_STATEMENT_LIST
+         > {
+         > }
+      > ,
+      > "\n  "
+      * n_ARRAY_VALUE
+       * n_EMPTY
+       * n_FUNCTION_DECLARATION
+        * n_EMPTY
+        * n_EMPTY
+        * n_EMPTY
+        * n_DECLARATION_PARAMETER_LIST
+         > (
+         > )
+        * n_EMPTY
+        * n_DECLARATION_RETURN
+         * n_CLASS_NAME
+          > void
+        > " "
+        * n_STATEMENT_LIST
+         > {
+         > }
+      > ,
+      > "\n\n  "
+      * n_ARRAY_VALUE
+       * n_EMPTY
+       * n_FUNCTION_DECLARATION
+        * n_STRING
+         > static
+        * n_EMPTY
+        * n_EMPTY
+        * n_EMPTY
+        * n_DECLARATION_PARAMETER_LIST
+         > (
+         > )
+        * n_EMPTY
+        * n_DECLARATION_RETURN
+         * n_CLASS_NAME
+          > string
+        > " "
+        * n_STATEMENT_LIST
+         > {
+         > }
+      > ,
+      > "\n  "
+      * n_ARRAY_VALUE
+       * n_EMPTY
+       * n_FUNCTION_DECLARATION
+        * n_STRING
+         > static
+        * n_EMPTY
+        * n_EMPTY
+        * n_EMPTY
+        * n_DECLARATION_PARAMETER_LIST
+         > (
+         > )
+        * n_EMPTY
+        * n_DECLARATION_RETURN
+         * n_TYPE_NAME
+          > array
+        > " "
+        * n_STATEMENT_LIST
+         > {
+         > }
+      > ,
+      > "\n  "
+      * n_ARRAY_VALUE
+       * n_EMPTY
+       * n_FUNCTION_DECLARATION
+        * n_STRING
+         > static
+        * n_EMPTY
+        * n_EMPTY
+        * n_EMPTY
+        * n_DECLARATION_PARAMETER_LIST
+         > (
+         > )
+        * n_EMPTY
+        * n_DECLARATION_RETURN
+         * n_TYPE_NAME
+          > callable
+        > " "
+        * n_STATEMENT_LIST
+         > {
+         > }
+      > ,
+      > "\n  "
+      * n_ARRAY_VALUE
+       * n_EMPTY
+       * n_FUNCTION_DECLARATION
+        * n_STRING
+         > static
+        * n_EMPTY
+        * n_EMPTY
+        * n_EMPTY
+        * n_DECLARATION_PARAMETER_LIST
+         > (
+         > )
+        * n_EMPTY
+        * n_DECLARATION_RETURN
+         * n_NULLABLE_TYPE
+          * n_CLASS_NAME
+           > string
+        > " "
+        * n_STATEMENT_LIST
+         > {
+         > }
+      > ,
+      > "\n  "
+      * n_ARRAY_VALUE
+       * n_EMPTY
+       * n_FUNCTION_DECLARATION
+        * n_STRING
+         > static
+        * n_EMPTY
+        * n_EMPTY
+        * n_EMPTY
+        * n_DECLARATION_PARAMETER_LIST
+         > (
+         > )
+        * n_EMPTY
+        * n_DECLARATION_RETURN
+         * n_CLASS_NAME
+          > void
+        > " "
+        * n_STATEMENT_LIST
+         > {
+         > }
+      > ,
+      > "\n"
+      > ]
+   > ;
+ > "\n\n"
diff --git a/src/parser/xhpast/__tests__/data/use.php.test b/src/parser/xhpast/__tests__/data/use.php.test
index 098f20fe..264721e7 100644
--- a/src/parser/xhpast/__tests__/data/use.php.test
+++ b/src/parser/xhpast/__tests__/data/use.php.test
@@ -1,380 +1,86 @@
 <?php
 
 use A;
 use \B;
 use C as D;
 use E, F;
 use G, H as I;
 ~~~~~~~~~~
 pass
 ~~~~~~~~~~
-{
-  "tree": [
-    9000,
-    0,
-    41,
-    [
-      [
-        9006,
-        0,
-        40,
-        [
-          [
-            9007,
-            0,
-            0
-          ],
-          [
-            9004,
-            2,
-            5,
-            [
-              [
-                9009,
-                2,
-                4,
-                [
-                  [
-                    9010,
-                    4,
-                    4,
-                    [
-                      [
-                        9001,
-                        4,
-                        4
-                      ],
-                      [
-                        9005
-                      ]
-                    ]
-                  ]
-                ]
-              ]
-            ]
-          ],
-          [
-            9004,
-            7,
-            11,
-            [
-              [
-                9009,
-                7,
-                10,
-                [
-                  [
-                    9010,
-                    9,
-                    10,
-                    [
-                      [
-                        9001,
-                        9,
-                        10
-                      ],
-                      [
-                        9005
-                      ]
-                    ]
-                  ]
-                ]
-              ]
-            ]
-          ],
-          [
-            9004,
-            13,
-            20,
-            [
-              [
-                9009,
-                13,
-                19,
-                [
-                  [
-                    9010,
-                    15,
-                    19,
-                    [
-                      [
-                        9001,
-                        15,
-                        15
-                      ],
-                      [
-                        9013,
-                        19,
-                        19
-                      ]
-                    ]
-                  ]
-                ]
-              ]
-            ]
-          ],
-          [
-            9004,
-            22,
-            28,
-            [
-              [
-                9009,
-                22,
-                27,
-                [
-                  [
-                    9010,
-                    24,
-                    24,
-                    [
-                      [
-                        9001,
-                        24,
-                        24
-                      ],
-                      [
-                        9005
-                      ]
-                    ]
-                  ],
-                  [
-                    9010,
-                    27,
-                    27,
-                    [
-                      [
-                        9001,
-                        27,
-                        27
-                      ],
-                      [
-                        9005
-                      ]
-                    ]
-                  ]
-                ]
-              ]
-            ]
-          ],
-          [
-            9004,
-            30,
-            40,
-            [
-              [
-                9009,
-                30,
-                39,
-                [
-                  [
-                    9010,
-                    32,
-                    32,
-                    [
-                      [
-                        9001,
-                        32,
-                        32
-                      ],
-                      [
-                        9005
-                      ]
-                    ]
-                  ],
-                  [
-                    9010,
-                    35,
-                    39,
-                    [
-                      [
-                        9001,
-                        35,
-                        35
-                      ],
-                      [
-                        9013,
-                        39,
-                        39
-                      ]
-                    ]
-                  ]
-                ]
-              ]
-            ]
-          ]
-        ]
-      ]
-    ]
-  ],
-  "stream": [
-    [
-      373,
-      5
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      345,
-      3
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      345,
-      3
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      389,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      345,
-      3
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      331,
-      2
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      345,
-      3
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      44,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      345,
-      3
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      44,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      331,
-      2
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      1
-    ]
-  ]
-}
+* n_PROGRAM
+ * n_STATEMENT_LIST
+  * n_OPEN_TAG
+   > <?php
+  > "\n\n"
+  * n_STATEMENT
+   * n_USE_LIST
+    > use
+    > " "
+    * n_USE
+     * n_SYMBOL_NAME
+      > A
+     * n_EMPTY
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_USE_LIST
+    > use
+    > " "
+    * n_USE
+     * n_SYMBOL_NAME
+      > "\"
+      > B
+     * n_EMPTY
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_USE_LIST
+    > use
+    > " "
+    * n_USE
+     * n_SYMBOL_NAME
+      > C
+     > " "
+     > as
+     > " "
+     * n_STRING
+      > D
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_USE_LIST
+    > use
+    > " "
+    * n_USE
+     * n_SYMBOL_NAME
+      > E
+     * n_EMPTY
+    > ,
+    > " "
+    * n_USE
+     * n_SYMBOL_NAME
+      > F
+     * n_EMPTY
+   > ;
+  > "\n"
+  * n_STATEMENT
+   * n_USE_LIST
+    > use
+    > " "
+    * n_USE
+     * n_SYMBOL_NAME
+      > G
+     * n_EMPTY
+    > ,
+    > " "
+    * n_USE
+     * n_SYMBOL_NAME
+      > H
+     > " "
+     > as
+     > " "
+     * n_STRING
+      > I
+   > ;
+ > "\n"
diff --git a/src/parser/xhpast/__tests__/data/variadic.php.test b/src/parser/xhpast/__tests__/data/variadic.php.test
index 15e98538..1be3bade 100644
--- a/src/parser/xhpast/__tests__/data/variadic.php.test
+++ b/src/parser/xhpast/__tests__/data/variadic.php.test
@@ -1,718 +1,160 @@
 <?php
 
 function a(...$a) { }
 
 function b(&...$a) { }
 
 function c(Type ...$a) { }
 
 function d(Type &...$a) { }
 
 a(...[1, 2, 3]);
 
 b(...$foo);
 
 ~~~~~~~~~~
 pass
 ~~~~~~~~~~
-{
-  "tree": [
-    9000,
-    0,
-    77,
-    [
-      [
-        9006,
-        0,
-        76,
-        [
-          [
-            9007,
-            0,
-            0
-          ],
-          [
-            9004,
-            2,
-            12,
-            [
-              [
-                9050,
-                2,
-                12,
-                [
-                  [
-                    9005
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9013,
-                    4,
-                    4
-                  ],
-                  [
-                    9059,
-                    5,
-                    8,
-                    [
-                      [
-                        9060,
-                        6,
-                        7,
-                        [
-                          [
-                            9005
-                          ],
-                          [
-                            9114,
-                            6,
-                            7,
-                            [
-                              [
-                                9047,
-                                7,
-                                7
-                              ]
-                            ]
-                          ],
-                          [
-                            9005
-                          ]
-                        ]
-                      ]
-                    ]
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9006,
-                    10,
-                    12
-                  ]
-                ]
-              ]
-            ]
-          ],
-          [
-            9004,
-            14,
-            25,
-            [
-              [
-                9050,
-                14,
-                25,
-                [
-                  [
-                    9005
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9013,
-                    16,
-                    16
-                  ],
-                  [
-                    9059,
-                    17,
-                    21,
-                    [
-                      [
-                        9060,
-                        18,
-                        18,
-                        [
-                          [
-                            9005
-                          ],
-                          [
-                            9049,
-                            18,
-                            20,
-                            [
-                              [
-                                9114,
-                                19,
-                                20,
-                                [
-                                  [
-                                    9047,
-                                    20,
-                                    20
-                                  ]
-                                ]
-                              ]
-                            ]
-                          ],
-                          [
-                            9005
-                          ]
-                        ]
-                      ]
-                    ]
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9006,
-                    23,
-                    25
-                  ]
-                ]
-              ]
-            ]
-          ],
-          [
-            9004,
-            27,
-            39,
-            [
-              [
-                9050,
-                27,
-                39,
-                [
-                  [
-                    9005
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9013,
-                    29,
-                    29
-                  ],
-                  [
-                    9059,
-                    30,
-                    35,
-                    [
-                      [
-                        9060,
-                        31,
-                        34,
-                        [
-                          [
-                            9090,
-                            31,
-                            31
-                          ],
-                          [
-                            9114,
-                            33,
-                            34,
-                            [
-                              [
-                                9047,
-                                34,
-                                34
-                              ]
-                            ]
-                          ],
-                          [
-                            9005
-                          ]
-                        ]
-                      ]
-                    ]
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9006,
-                    37,
-                    39
-                  ]
-                ]
-              ]
-            ]
-          ],
-          [
-            9004,
-            41,
-            54,
-            [
-              [
-                9050,
-                41,
-                54,
-                [
-                  [
-                    9005
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9013,
-                    43,
-                    43
-                  ],
-                  [
-                    9059,
-                    44,
-                    50,
-                    [
-                      [
-                        9060,
-                        45,
-                        47,
-                        [
-                          [
-                            9090,
-                            45,
-                            45
-                          ],
-                          [
-                            9049,
-                            47,
-                            49,
-                            [
-                              [
-                                9114,
-                                48,
-                                49,
-                                [
-                                  [
-                                    9047,
-                                    49,
-                                    49
-                                  ]
-                                ]
-                              ]
-                            ]
-                          ],
-                          [
-                            9005
-                          ]
-                        ]
-                      ]
-                    ]
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9005
-                  ],
-                  [
-                    9006,
-                    52,
-                    54
-                  ]
-                ]
-              ]
-            ]
-          ],
-          [
-            9004,
-            56,
-            69,
-            [
-              [
-                9099,
-                56,
-                68,
-                [
-                  [
-                    9001,
-                    56,
-                    56
-                  ],
-                  [
-                    9095,
-                    57,
-                    68,
-                    [
-                      [
-                        9114,
-                        58,
-                        58,
-                        [
-                          [
-                            0,
-                            58,
-                            58
-                          ]
-                        ]
-                      ]
-                    ]
-                  ]
-                ]
-              ]
-            ]
-          ],
-          [
-            9004,
-            71,
-            76,
-            [
-              [
-                9099,
-                71,
-                75,
-                [
-                  [
-                    9001,
-                    71,
-                    71
-                  ],
-                  [
-                    9095,
-                    72,
-                    75,
-                    [
-                      [
-                        9114,
-                        73,
-                        73,
-                        [
-                          [
-                            0,
-                            73,
-                            73
-                          ]
-                        ]
-                      ]
-                    ]
-                  ]
-                ]
-              ]
-            ]
-          ]
-        ]
-      ]
-    ]
-  ],
-  "stream": [
-    [
-      373,
-      5
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      339,
-      8
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      396,
-      3
-    ],
-    [
-      313,
-      2
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      339,
-      8
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      38,
-      1
-    ],
-    [
-      396,
-      3
-    ],
-    [
-      313,
-      2
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      339,
-      8
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      311,
-      4
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      396,
-      3
-    ],
-    [
-      313,
-      2
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      339,
-      8
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      311,
-      4
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      38,
-      1
-    ],
-    [
-      396,
-      3
-    ],
-    [
-      313,
-      2
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      396,
-      3
-    ],
-    [
-      91,
-      1
-    ],
-    [
-      309,
-      1
-    ],
-    [
-      44,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      309,
-      1
-    ],
-    [
-      44,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      309,
-      1
-    ],
-    [
-      93,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      396,
-      3
-    ],
-    [
-      313,
-      4
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      2
-    ]
-  ]
-}
+* n_PROGRAM
+ * n_STATEMENT_LIST
+  * n_OPEN_TAG
+   > <?php
+  > "\n\n"
+  * n_STATEMENT
+   * n_FUNCTION_DECLARATION
+    * n_EMPTY
+    * n_EMPTY
+    * n_STRING
+     > a
+    * n_DECLARATION_PARAMETER_LIST
+     > (
+     * n_DECLARATION_PARAMETER
+      * n_EMPTY
+      * n_UNPACK
+       > ...
+       * n_VARIABLE
+        > $a
+      * n_EMPTY
+     > )
+    * n_EMPTY
+    * n_EMPTY
+    * n_STATEMENT_LIST
+     > {
+     > " "
+     > }
+  > "\n\n"
+  * n_STATEMENT
+   * n_FUNCTION_DECLARATION
+    * n_EMPTY
+    * n_EMPTY
+    * n_STRING
+     > b
+    * n_DECLARATION_PARAMETER_LIST
+     > (
+     * n_DECLARATION_PARAMETER
+      * n_EMPTY
+      * n_VARIABLE_REFERENCE
+       > &
+       * n_UNPACK
+        > ...
+        * n_VARIABLE
+         > $a
+      * n_EMPTY
+     > ...
+     > $a
+     > )
+    * n_EMPTY
+    * n_EMPTY
+    * n_STATEMENT_LIST
+     > {
+     > " "
+     > }
+  > "\n\n"
+  * n_STATEMENT
+   * n_FUNCTION_DECLARATION
+    * n_EMPTY
+    * n_EMPTY
+    * n_STRING
+     > c
+    * n_DECLARATION_PARAMETER_LIST
+     > (
+     * n_DECLARATION_PARAMETER
+      * n_CLASS_NAME
+       > Type
+      > " "
+      * n_UNPACK
+       > ...
+       * n_VARIABLE
+        > $a
+      * n_EMPTY
+     > )
+    * n_EMPTY
+    * n_EMPTY
+    * n_STATEMENT_LIST
+     > {
+     > " "
+     > }
+  > "\n\n"
+  * n_STATEMENT
+   * n_FUNCTION_DECLARATION
+    * n_EMPTY
+    * n_EMPTY
+    * n_STRING
+     > d
+    * n_DECLARATION_PARAMETER_LIST
+     > (
+     * n_DECLARATION_PARAMETER
+      * n_CLASS_NAME
+       > Type
+      > " "
+      * n_VARIABLE_REFERENCE
+       > &
+       * n_UNPACK
+        > ...
+        * n_VARIABLE
+         > $a
+      * n_EMPTY
+     > ...
+     > $a
+     > )
+    * n_EMPTY
+    * n_EMPTY
+    * n_STATEMENT_LIST
+     > {
+     > " "
+     > }
+  > "\n\n"
+  * n_STATEMENT
+   * n_FUNCTION_CALL
+    * n_SYMBOL_NAME
+     > a
+    * n_CALL_PARAMETER_LIST
+     > (
+     * n_UNPACK
+      * "<INVALID TYPE \"0\">"
+       > ...
+     > [
+     > 1
+     > ,
+     > " "
+     > 2
+     > ,
+     > " "
+     > 3
+     > ]
+     > )
+   > ;
+  > "\n\n"
+  * n_STATEMENT
+   * n_FUNCTION_CALL
+    * n_SYMBOL_NAME
+     > b
+    * n_CALL_PARAMETER_LIST
+     > (
+     * n_UNPACK
+      * "<INVALID TYPE \"0\">"
+       > ...
+     > $foo
+     > )
+   > ;
+ > "\n\n"