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@ ProgramNode (location: (1,0)-(3,3))
├── locals: []
└── statements:
@ StatementsNode (location: (1,0)-(3,3))
└── body: (length: 1)
└── @ CaseMatchNode (location: (1,0)-(3,3))
├── predicate:
│ @ ArrayNode (location: (1,5)-(1,13))
│ ├── flags: ∅
│ ├── elements: (length: 2)
│ │ ├── @ SymbolNode (location: (1,6)-(1,8))
│ │ │ ├── flags: forced_us_ascii_encoding
│ │ │ ├── opening_loc: (1,6)-(1,7) = ":"
│ │ │ ├── value_loc: (1,7)-(1,8) = "a"
│ │ │ ├── closing_loc: ∅
│ │ │ └── unescaped: "a"
│ │ └── @ SymbolNode (location: (1,10)-(1,12))
│ │ ├── flags: forced_us_ascii_encoding
│ │ ├── opening_loc: (1,10)-(1,11) = ":"
│ │ ├── value_loc: (1,11)-(1,12) = "b"
│ │ ├── closing_loc: ∅
│ │ └── unescaped: "b"
│ ├── opening_loc: (1,5)-(1,6) = "["
│ └── closing_loc: (1,12)-(1,13) = "]"
├── conditions: (length: 1)
│ └── @ InNode (location: (2,0)-(2,25))
│ ├── pattern:
│ │ @ ArrayPatternNode (location: (2,3)-(2,16))
│ │ ├── constant: ∅
│ │ ├── requireds: (length: 0)
│ │ ├── rest:
│ │ │ @ SplatNode (location: (2,3)-(2,4))
│ │ │ ├── operator_loc: (2,3)-(2,4) = "*"
│ │ │ └── expression: ∅
│ │ ├── posts: (length: 1)
│ │ │ └── @ ConstantPathNode (location: (2,6)-(2,16))
│ │ │ ├── parent: ∅
│ │ │ ├── child:
│ │ │ │ @ ConstantReadNode (location: (2,8)-(2,16))
│ │ │ │ └── name: :NilClass
│ │ │ └── delimiter_loc: (2,6)-(2,8) = "::"
│ │ ├── opening_loc: ∅
│ │ └── closing_loc: ∅
│ ├── statements:
│ │ @ StatementsNode (location: (2,22)-(2,25))
│ │ └── body: (length: 1)
│ │ └── @ NilNode (location: (2,22)-(2,25))
│ ├── in_loc: (2,0)-(2,2) = "in"
│ └── then_loc: (2,17)-(2,21) = "then"
├── consequent: ∅
├── case_keyword_loc: (1,0)-(1,4) = "case"
└── end_keyword_loc: (3,0)-(3,3) = "end"
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