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@ ProgramNode (location: (1,0)-(1,29))
├── locals: []
└── statements:
@ StatementsNode (location: (1,0)-(1,29))
└── body: (length: 1)
└── @ DefNode (location: (1,0)-(1,29))
├── name: :a
├── name_loc: (1,4)-(1,5) = "a"
├── receiver: ∅
├── parameters:
│ @ ParametersNode (location: (1,6)-(1,12))
│ ├── requireds: (length: 1)
│ │ └── @ RequiredParameterNode (location: (1,6)-(1,7))
│ │ ├── flags: ∅
│ │ └── name: :x
│ ├── optionals: (length: 0)
│ ├── rest: ∅
│ ├── posts: (length: 0)
│ ├── keywords: (length: 0)
│ ├── keyword_rest:
│ │ @ ForwardingParameterNode (location: (1,9)-(1,12))
│ └── block: ∅
├── body:
│ @ StatementsNode (location: (1,15)-(1,24))
│ └── body: (length: 1)
│ └── @ CallNode (location: (1,15)-(1,24))
│ ├── flags: ignore_visibility
│ ├── receiver: ∅
│ ├── call_operator_loc: ∅
│ ├── name: :b
│ ├── message_loc: (1,15)-(1,16) = "b"
│ ├── opening_loc: (1,16)-(1,17) = "("
│ ├── arguments:
│ │ @ ArgumentsNode (location: (1,17)-(1,23))
│ │ ├── flags: ∅
│ │ └── arguments: (length: 2)
│ │ ├── @ LocalVariableReadNode (location: (1,17)-(1,18))
│ │ │ ├── name: :x
│ │ │ └── depth: 0
│ │ └── @ ForwardingArgumentsNode (location: (1,20)-(1,23))
│ ├── closing_loc: (1,23)-(1,24) = ")"
│ └── block: ∅
├── locals: [:x]
├── def_keyword_loc: (1,0)-(1,3) = "def"
├── operator_loc: ∅
├── lparen_loc: (1,5)-(1,6) = "("
├── rparen_loc: (1,12)-(1,13) = ")"
├── equal_loc: ∅
└── end_keyword_loc: (1,26)-(1,29) = "end"
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