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@ ProgramNode (location: (1,0)-(3,27))
├── locals: [:a, :b]
└── statements:
@ StatementsNode (location: (1,0)-(3,27))
└── body: (length: 3)
├── @ DefinedNode (location: (1,0)-(1,14))
│ ├── lparen_loc: (1,8)-(1,9) = "("
│ ├── value:
│ │ @ InstanceVariableReadNode (location: (1,9)-(1,13))
│ │ └── name: :@foo
│ ├── rparen_loc: (1,13)-(1,14) = ")"
│ └── keyword_loc: (1,0)-(1,8) = "defined?"
├── @ DefinedNode (location: (2,0)-(2,13))
│ ├── lparen_loc: (2,8)-(2,9) = "("
│ ├── value:
│ │ @ ConstantReadNode (location: (2,9)-(2,12))
│ │ └── name: :Foo
│ ├── rparen_loc: (2,12)-(2,13) = ")"
│ └── keyword_loc: (2,0)-(2,8) = "defined?"
└── @ DefinedNode (location: (3,0)-(3,27))
├── lparen_loc: (3,8)-(3,9) = "("
├── value:
│ @ ParenthesesNode (location: (3,9)-(3,26))
│ ├── body:
│ │ @ StatementsNode (location: (3,10)-(3,25))
│ │ └── body: (length: 1)
│ │ └── @ MultiWriteNode (location: (3,10)-(3,25))
│ │ ├── lefts: (length: 2)
│ │ │ ├── @ LocalVariableTargetNode (location: (3,11)-(3,12))
│ │ │ │ ├── name: :a
│ │ │ │ └── depth: 0
│ │ │ └── @ LocalVariableTargetNode (location: (3,14)-(3,15))
│ │ │ ├── name: :b
│ │ │ └── depth: 0
│ │ ├── rest: ∅
│ │ ├── rights: (length: 0)
│ │ ├── lparen_loc: (3,10)-(3,11) = "("
│ │ ├── rparen_loc: (3,15)-(3,16) = ")"
│ │ ├── operator_loc: (3,17)-(3,18) = "="
│ │ └── value:
│ │ @ ArrayNode (location: (3,19)-(3,25))
│ │ ├── flags: ∅
│ │ ├── elements: (length: 2)
│ │ │ ├── @ IntegerNode (location: (3,20)-(3,21))
│ │ │ │ ├── flags: decimal
│ │ │ │ └── value: 1
│ │ │ └── @ IntegerNode (location: (3,23)-(3,24))
│ │ │ ├── flags: decimal
│ │ │ └── value: 2
│ │ ├── opening_loc: (3,19)-(3,20) = "["
│ │ └── closing_loc: (3,24)-(3,25) = "]"
│ ├── opening_loc: (3,9)-(3,10) = "("
│ └── closing_loc: (3,25)-(3,26) = ")"
├── rparen_loc: (3,26)-(3,27) = ")"
└── keyword_loc: (3,0)-(3,8) = "defined?"
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