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@ ProgramNode (location: (1,0)-(3,3))
├── locals: []
└── statements:
@ StatementsNode (location: (1,0)-(3,3))
└── body: (length: 1)
└── @ WhileNode (location: (1,0)-(3,3))
├── flags: ∅
├── keyword_loc: (1,0)-(1,5) = "while"
├── closing_loc: (3,0)-(3,3) = "end"
├── predicate:
│ @ CallNode (location: (1,6)-(1,18))
│ ├── flags: ∅
│ ├── receiver:
│ │ @ CallNode (location: (1,10)-(1,18))
│ │ ├── flags: ∅
│ │ ├── receiver:
│ │ │ @ CallNode (location: (1,10)-(1,13))
│ │ │ ├── flags: variable_call, ignore_visibility
│ │ │ ├── receiver: ∅
│ │ │ ├── call_operator_loc: ∅
│ │ │ ├── name: :var
│ │ │ ├── message_loc: (1,10)-(1,13) = "var"
│ │ │ ├── opening_loc: ∅
│ │ │ ├── arguments: ∅
│ │ │ ├── closing_loc: ∅
│ │ │ └── block: ∅
│ │ ├── call_operator_loc: (1,13)-(1,14) = "."
│ │ ├── name: :nil?
│ │ ├── message_loc: (1,14)-(1,18) = "nil?"
│ │ ├── opening_loc: ∅
│ │ ├── arguments: ∅
│ │ ├── closing_loc: ∅
│ │ └── block: ∅
│ ├── call_operator_loc: ∅
│ ├── name: :!
│ ├── message_loc: (1,6)-(1,9) = "not"
│ ├── opening_loc: ∅
│ ├── arguments: ∅
│ ├── closing_loc: ∅
│ └── block: ∅
└── statements:
@ StatementsNode (location: (2,2)-(2,7))
└── body: (length: 1)
└── @ StringNode (location: (2,2)-(2,7))
├── flags: ∅
├── opening_loc: (2,2)-(2,3) = "'"
├── content_loc: (2,3)-(2,6) = "foo"
├── closing_loc: (2,6)-(2,7) = "'"
└── unescaped: "foo"
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