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@ ProgramNode (location: (1,0)-(7,23))
├── locals: [:a]
└── statements:
@ StatementsNode (location: (1,0)-(7,23))
└── body: (length: 4)
├── @ ClassVariableOperatorWriteNode (location: (1,0)-(1,11))
│ ├── name: :@@var
│ ├── name_loc: (1,0)-(1,5) = "@@var"
│ ├── operator_loc: (1,6)-(1,8) = "|="
│ ├── value:
│ │ @ IntegerNode (location: (1,9)-(1,11))
│ │ ├── flags: decimal
│ │ └── value: 10
│ └── operator: :|
├── @ InstanceVariableOperatorWriteNode (location: (3,0)-(3,7))
│ ├── name: :@a
│ ├── name_loc: (3,0)-(3,2) = "@a"
│ ├── operator_loc: (3,3)-(3,5) = "|="
│ ├── value:
│ │ @ IntegerNode (location: (3,6)-(3,7))
│ │ ├── flags: decimal
│ │ └── value: 1
│ └── operator: :|
├── @ LocalVariableOperatorWriteNode (location: (5,0)-(5,6))
│ ├── name_loc: (5,0)-(5,1) = "a"
│ ├── operator_loc: (5,2)-(5,4) = "+="
│ ├── value:
│ │ @ IntegerNode (location: (5,5)-(5,6))
│ │ ├── flags: decimal
│ │ └── value: 1
│ ├── name: :a
│ ├── operator: :+
│ └── depth: 0
└── @ DefNode (location: (7,0)-(7,23))
├── name: :a
├── name_loc: (7,4)-(7,5) = "a"
├── receiver: ∅
├── parameters: ∅
├── body:
│ @ StatementsNode (location: (7,7)-(7,18))
│ └── body: (length: 1)
│ └── @ ClassVariableOperatorWriteNode (location: (7,7)-(7,18))
│ ├── name: :@@var
│ ├── name_loc: (7,7)-(7,12) = "@@var"
│ ├── operator_loc: (7,13)-(7,15) = "|="
│ ├── value:
│ │ @ IntegerNode (location: (7,16)-(7,18))
│ │ ├── flags: decimal
│ │ └── value: 10
│ └── operator: :|
├── locals: []
├── def_keyword_loc: (7,0)-(7,3) = "def"
├── operator_loc: ∅
├── lparen_loc: ∅
├── rparen_loc: ∅
├── equal_loc: ∅
└── end_keyword_loc: (7,20)-(7,23) = "end"
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