@ ProgramNode (location: (1,0)-(42,3))
├── locals: []
└── statements:
    @ StatementsNode (location: (1,0)-(42,3))
    └── body: (length: 8)
        ├── @ BeginNode (location: (1,0)-(3,3))
        │   ├── begin_keyword_loc: (1,0)-(1,5) = "begin"
        │   ├── statements: ∅
        │   ├── rescue_clause:
        │   │   @ RescueNode (location: (2,0)-(2,6))
        │   │   ├── keyword_loc: (2,0)-(2,6) = "rescue"
        │   │   ├── exceptions: (length: 0)
        │   │   ├── operator_loc: ∅
        │   │   ├── reference: ∅
        │   │   ├── statements: ∅
        │   │   └── consequent: ∅
        │   ├── else_clause: ∅
        │   ├── ensure_clause: ∅
        │   └── end_keyword_loc: (3,0)-(3,3) = "end"
        ├── @ BeginNode (location: (5,0)-(8,3))
        │   ├── begin_keyword_loc: (5,0)-(5,5) = "begin"
        │   ├── statements: ∅
        │   ├── rescue_clause:
        │   │   @ RescueNode (location: (6,0)-(6,6))
        │   │   ├── keyword_loc: (6,0)-(6,6) = "rescue"
        │   │   ├── exceptions: (length: 0)
        │   │   ├── operator_loc: ∅
        │   │   ├── reference: ∅
        │   │   ├── statements: ∅
        │   │   └── consequent: ∅
        │   ├── else_clause:
        │   │   @ ElseNode (location: (7,0)-(8,3))
        │   │   ├── else_keyword_loc: (7,0)-(7,4) = "else"
        │   │   ├── statements: ∅
        │   │   └── end_keyword_loc: (8,0)-(8,3) = "end"
        │   ├── ensure_clause: ∅
        │   └── end_keyword_loc: (8,0)-(8,3) = "end"
        ├── @ BeginNode (location: (10,0)-(12,3))
        │   ├── begin_keyword_loc: (10,0)-(10,5) = "begin"
        │   ├── statements:
        │   │   @ StatementsNode (location: (11,2)-(11,3))
        │   │   └── body: (length: 1)
        │   │       └── @ CallNode (location: (11,2)-(11,3))
        │   │           ├── flags: variable_call
        │   │           ├── receiver: ∅
        │   │           ├── call_operator_loc: ∅
        │   │           ├── name: :a
        │   │           ├── message_loc: (11,2)-(11,3) = "a"
        │   │           ├── opening_loc: ∅
        │   │           ├── arguments: ∅
        │   │           ├── closing_loc: ∅
        │   │           └── block: ∅
        │   ├── rescue_clause: ∅
        │   ├── else_clause: ∅
        │   ├── ensure_clause: ∅
        │   └── end_keyword_loc: (12,0)-(12,3) = "end"
        ├── @ BeginNode (location: (14,0)-(18,3))
        │   ├── begin_keyword_loc: (14,0)-(14,5) = "begin"
        │   ├── statements:
        │   │   @ StatementsNode (location: (15,2)-(15,3))
        │   │   └── body: (length: 1)
        │   │       └── @ CallNode (location: (15,2)-(15,3))
        │   │           ├── flags: variable_call
        │   │           ├── receiver: ∅
        │   │           ├── call_operator_loc: ∅
        │   │           ├── name: :a
        │   │           ├── message_loc: (15,2)-(15,3) = "a"
        │   │           ├── opening_loc: ∅
        │   │           ├── arguments: ∅
        │   │           ├── closing_loc: ∅
        │   │           └── block: ∅
        │   ├── rescue_clause:
        │   │   @ RescueNode (location: (16,0)-(17,3))
        │   │   ├── keyword_loc: (16,0)-(16,6) = "rescue"
        │   │   ├── exceptions: (length: 0)
        │   │   ├── operator_loc: ∅
        │   │   ├── reference: ∅
        │   │   ├── statements:
        │   │   │   @ StatementsNode (location: (17,2)-(17,3))
        │   │   │   └── body: (length: 1)
        │   │   │       └── @ CallNode (location: (17,2)-(17,3))
        │   │   │           ├── flags: variable_call
        │   │   │           ├── receiver: ∅
        │   │   │           ├── call_operator_loc: ∅
        │   │   │           ├── name: :b
        │   │   │           ├── message_loc: (17,2)-(17,3) = "b"
        │   │   │           ├── opening_loc: ∅
        │   │   │           ├── arguments: ∅
        │   │   │           ├── closing_loc: ∅
        │   │   │           └── block: ∅
        │   │   └── consequent: ∅
        │   ├── else_clause: ∅
        │   ├── ensure_clause: ∅
        │   └── end_keyword_loc: (18,0)-(18,3) = "end"
        ├── @ BeginNode (location: (20,0)-(25,3))
        │   ├── begin_keyword_loc: (20,0)-(20,5) = "begin"
        │   ├── statements:
        │   │   @ StatementsNode (location: (21,2)-(22,3))
        │   │   └── body: (length: 2)
        │   │       ├── @ CallNode (location: (21,2)-(21,3))
        │   │       │   ├── flags: variable_call
        │   │       │   ├── receiver: ∅
        │   │       │   ├── call_operator_loc: ∅
        │   │       │   ├── name: :a
        │   │       │   ├── message_loc: (21,2)-(21,3) = "a"
        │   │       │   ├── opening_loc: ∅
        │   │       │   ├── arguments: ∅
        │   │       │   ├── closing_loc: ∅
        │   │       │   └── block: ∅
        │   │       └── @ CallNode (location: (22,2)-(22,3))
        │   │           ├── flags: variable_call
        │   │           ├── receiver: ∅
        │   │           ├── call_operator_loc: ∅
        │   │           ├── name: :b
        │   │           ├── message_loc: (22,2)-(22,3) = "b"
        │   │           ├── opening_loc: ∅
        │   │           ├── arguments: ∅
        │   │           ├── closing_loc: ∅
        │   │           └── block: ∅
        │   ├── rescue_clause:
        │   │   @ RescueNode (location: (23,0)-(24,3))
        │   │   ├── keyword_loc: (23,0)-(23,6) = "rescue"
        │   │   ├── exceptions: (length: 0)
        │   │   ├── operator_loc: ∅
        │   │   ├── reference: ∅
        │   │   ├── statements:
        │   │   │   @ StatementsNode (location: (24,2)-(24,3))
        │   │   │   └── body: (length: 1)
        │   │   │       └── @ CallNode (location: (24,2)-(24,3))
        │   │   │           ├── flags: variable_call
        │   │   │           ├── receiver: ∅
        │   │   │           ├── call_operator_loc: ∅
        │   │   │           ├── name: :b
        │   │   │           ├── message_loc: (24,2)-(24,3) = "b"
        │   │   │           ├── opening_loc: ∅
        │   │   │           ├── arguments: ∅
        │   │   │           ├── closing_loc: ∅
        │   │   │           └── block: ∅
        │   │   └── consequent: ∅
        │   ├── else_clause: ∅
        │   ├── ensure_clause: ∅
        │   └── end_keyword_loc: (25,0)-(25,3) = "end"
        ├── @ BeginNode (location: (27,0)-(30,3))
        │   ├── begin_keyword_loc: (27,0)-(27,5) = "begin"
        │   ├── statements: ∅
        │   ├── rescue_clause:
        │   │   @ RescueNode (location: (28,0)-(28,8))
        │   │   ├── keyword_loc: (28,0)-(28,6) = "rescue"
        │   │   ├── exceptions: (length: 1)
        │   │   │   └── @ ConstantReadNode (location: (28,7)-(28,8))
        │   │   │       └── name: :A
        │   │   ├── operator_loc: ∅
        │   │   ├── reference: ∅
        │   │   ├── statements: ∅
        │   │   └── consequent: ∅
        │   ├── else_clause:
        │   │   @ ElseNode (location: (29,0)-(30,3))
        │   │   ├── else_keyword_loc: (29,0)-(29,4) = "else"
        │   │   ├── statements: ∅
        │   │   └── end_keyword_loc: (30,0)-(30,3) = "end"
        │   ├── ensure_clause: ∅
        │   └── end_keyword_loc: (30,0)-(30,3) = "end"
        ├── @ BeginNode (location: (32,0)-(32,26))
        │   ├── begin_keyword_loc: (32,0)-(32,5) = "begin"
        │   ├── statements: ∅
        │   ├── rescue_clause:
        │   │   @ RescueNode (location: (32,7)-(32,15))
        │   │   ├── keyword_loc: (32,7)-(32,13) = "rescue"
        │   │   ├── exceptions: (length: 1)
        │   │   │   └── @ ConstantReadNode (location: (32,14)-(32,15))
        │   │   │       └── name: :A
        │   │   ├── operator_loc: ∅
        │   │   ├── reference: ∅
        │   │   ├── statements: ∅
        │   │   └── consequent: ∅
        │   ├── else_clause:
        │   │   @ ElseNode (location: (32,17)-(32,26))
        │   │   ├── else_keyword_loc: (32,17)-(32,21) = "else"
        │   │   ├── statements: ∅
        │   │   └── end_keyword_loc: (32,23)-(32,26) = "end"
        │   ├── ensure_clause: ∅
        │   └── end_keyword_loc: (32,23)-(32,26) = "end"
        └── @ BeginNode (location: (34,0)-(42,3))
            ├── begin_keyword_loc: (34,0)-(34,5) = "begin"
            ├── statements:
            │   @ StatementsNode (location: (35,2)-(35,3))
            │   └── body: (length: 1)
            │       └── @ CallNode (location: (35,2)-(35,3))
            │           ├── flags: variable_call
            │           ├── receiver: ∅
            │           ├── call_operator_loc: ∅
            │           ├── name: :a
            │           ├── message_loc: (35,2)-(35,3) = "a"
            │           ├── opening_loc: ∅
            │           ├── arguments: ∅
            │           ├── closing_loc: ∅
            │           └── block: ∅
            ├── rescue_clause:
            │   @ RescueNode (location: (36,0)-(39,3))
            │   ├── keyword_loc: (36,0)-(36,6) = "rescue"
            │   ├── exceptions: (length: 1)
            │   │   └── @ ConstantReadNode (location: (36,7)-(36,8))
            │   │       └── name: :A
            │   ├── operator_loc: ∅
            │   ├── reference: ∅
            │   ├── statements:
            │   │   @ StatementsNode (location: (37,2)-(37,3))
            │   │   └── body: (length: 1)
            │   │       └── @ CallNode (location: (37,2)-(37,3))
            │   │           ├── flags: variable_call
            │   │           ├── receiver: ∅
            │   │           ├── call_operator_loc: ∅
            │   │           ├── name: :b
            │   │           ├── message_loc: (37,2)-(37,3) = "b"
            │   │           ├── opening_loc: ∅
            │   │           ├── arguments: ∅
            │   │           ├── closing_loc: ∅
            │   │           └── block: ∅
            │   └── consequent:
            │       @ RescueNode (location: (38,0)-(39,3))
            │       ├── keyword_loc: (38,0)-(38,6) = "rescue"
            │       ├── exceptions: (length: 1)
            │       │   └── @ ConstantReadNode (location: (38,7)-(38,8))
            │       │       └── name: :B
            │       ├── operator_loc: ∅
            │       ├── reference: ∅
            │       ├── statements:
            │       │   @ StatementsNode (location: (39,2)-(39,3))
            │       │   └── body: (length: 1)
            │       │       └── @ CallNode (location: (39,2)-(39,3))
            │       │           ├── flags: variable_call
            │       │           ├── receiver: ∅
            │       │           ├── call_operator_loc: ∅
            │       │           ├── name: :c
            │       │           ├── message_loc: (39,2)-(39,3) = "c"
            │       │           ├── opening_loc: ∅
            │       │           ├── arguments: ∅
            │       │           ├── closing_loc: ∅
            │       │           └── block: ∅
            │       └── consequent: ∅
            ├── else_clause: ∅
            ├── ensure_clause:
            │   @ EnsureNode (location: (40,0)-(42,3))
            │   ├── ensure_keyword_loc: (40,0)-(40,6) = "ensure"
            │   ├── statements:
            │   │   @ StatementsNode (location: (41,2)-(41,3))
            │   │   └── body: (length: 1)
            │   │       └── @ CallNode (location: (41,2)-(41,3))
            │   │           ├── flags: variable_call
            │   │           ├── receiver: ∅
            │   │           ├── call_operator_loc: ∅
            │   │           ├── name: :d
            │   │           ├── message_loc: (41,2)-(41,3) = "d"
            │   │           ├── opening_loc: ∅
            │   │           ├── arguments: ∅
            │   │           ├── closing_loc: ∅
            │   │           └── block: ∅
            │   └── end_keyword_loc: (42,0)-(42,3) = "end"
            └── end_keyword_loc: (42,0)-(42,3) = "end"
