@ ProgramNode (location: (1,0)-(18,3))
├── locals: []
└── statements:
    @ StatementsNode (location: (1,0)-(18,3))
    └── body: (length: 7)
        ├── @ ModuleNode (location: (1,0)-(1,18))
        │   ├── locals: [:a]
        │   ├── module_keyword_loc: (1,0)-(1,6) = "module"
        │   ├── constant_path:
        │   │   @ ConstantReadNode (location: (1,7)-(1,8))
        │   │   └── name: :A
        │   ├── body:
        │   │   @ StatementsNode (location: (1,9)-(1,14))
        │   │   └── body: (length: 1)
        │   │       └── @ LocalVariableWriteNode (location: (1,9)-(1,14))
        │   │           ├── name: :a
        │   │           ├── depth: 0
        │   │           ├── name_loc: (1,9)-(1,10) = "a"
        │   │           ├── value:
        │   │           │   @ IntegerNode (location: (1,13)-(1,14))
        │   │           │   ├── flags: decimal
        │   │           │   └── value: 1
        │   │           └── operator_loc: (1,11)-(1,12) = "="
        │   ├── end_keyword_loc: (1,15)-(1,18) = "end"
        │   └── name: :A
        ├── @ InterpolatedStringNode (location: (3,0)-(3,18))
        │   ├── flags: ∅
        │   ├── opening_loc: (3,0)-(3,3) = "%Q{"
        │   ├── parts: (length: 3)
        │   │   ├── @ StringNode (location: (3,3)-(3,7))
        │   │   │   ├── flags: frozen
        │   │   │   ├── opening_loc: ∅
        │   │   │   ├── content_loc: (3,3)-(3,7) = "aaa "
        │   │   │   ├── closing_loc: ∅
        │   │   │   └── unescaped: "aaa "
        │   │   ├── @ EmbeddedStatementsNode (location: (3,7)-(3,13))
        │   │   │   ├── opening_loc: (3,7)-(3,9) = "\#{"
        │   │   │   ├── statements:
        │   │   │   │   @ StatementsNode (location: (3,9)-(3,12))
        │   │   │   │   └── body: (length: 1)
        │   │   │   │       └── @ CallNode (location: (3,9)-(3,12))
        │   │   │   │           ├── flags: variable_call, ignore_visibility
        │   │   │   │           ├── receiver: ∅
        │   │   │   │           ├── call_operator_loc: ∅
        │   │   │   │           ├── name: :bbb
        │   │   │   │           ├── message_loc: (3,9)-(3,12) = "bbb"
        │   │   │   │           ├── opening_loc: ∅
        │   │   │   │           ├── arguments: ∅
        │   │   │   │           ├── closing_loc: ∅
        │   │   │   │           └── block: ∅
        │   │   │   └── closing_loc: (3,12)-(3,13) = "}"
        │   │   └── @ StringNode (location: (3,13)-(3,17))
        │   │       ├── flags: frozen
        │   │       ├── opening_loc: ∅
        │   │       ├── content_loc: (3,13)-(3,17) = " ccc"
        │   │       ├── closing_loc: ∅
        │   │       └── unescaped: " ccc"
        │   └── closing_loc: (3,17)-(3,18) = "}"
        ├── @ ModuleNode (location: (5,0)-(6,3))
        │   ├── locals: []
        │   ├── module_keyword_loc: (5,0)-(5,6) = "module"
        │   ├── constant_path:
        │   │   @ ConstantPathNode (location: (5,7)-(5,11))
        │   │   ├── parent:
        │   │   │   @ CallNode (location: (5,7)-(5,8))
        │   │   │   ├── flags: variable_call, ignore_visibility
        │   │   │   ├── receiver: ∅
        │   │   │   ├── call_operator_loc: ∅
        │   │   │   ├── name: :m
        │   │   │   ├── message_loc: (5,7)-(5,8) = "m"
        │   │   │   ├── opening_loc: ∅
        │   │   │   ├── arguments: ∅
        │   │   │   ├── closing_loc: ∅
        │   │   │   └── block: ∅
        │   │   ├── child:
        │   │   │   @ ConstantReadNode (location: (5,10)-(5,11))
        │   │   │   └── name: :M
        │   │   └── delimiter_loc: (5,8)-(5,10) = "::"
        │   ├── body: ∅
        │   ├── end_keyword_loc: (6,0)-(6,3) = "end"
        │   └── name: :M
        ├── @ ModuleNode (location: (8,0)-(9,19))
        │   ├── locals: [:x]
        │   ├── module_keyword_loc: (8,0)-(8,6) = "module"
        │   ├── constant_path:
        │   │   @ ConstantReadNode (location: (8,7)-(8,8))
        │   │   └── name: :A
        │   ├── body:
        │   │   @ BeginNode (location: (8,0)-(9,19))
        │   │   ├── begin_keyword_loc: ∅
        │   │   ├── statements:
        │   │   │   @ StatementsNode (location: (9,1)-(9,6))
        │   │   │   └── body: (length: 1)
        │   │   │       └── @ LocalVariableWriteNode (location: (9,1)-(9,6))
        │   │   │           ├── name: :x
        │   │   │           ├── depth: 0
        │   │   │           ├── name_loc: (9,1)-(9,2) = "x"
        │   │   │           ├── value:
        │   │   │           │   @ IntegerNode (location: (9,5)-(9,6))
        │   │   │           │   ├── flags: decimal
        │   │   │           │   └── value: 1
        │   │   │           └── operator_loc: (9,3)-(9,4) = "="
        │   │   ├── rescue_clause:
        │   │   │   @ RescueNode (location: (9,8)-(9,14))
        │   │   │   ├── keyword_loc: (9,8)-(9,14) = "rescue"
        │   │   │   ├── exceptions: (length: 0)
        │   │   │   ├── operator_loc: ∅
        │   │   │   ├── reference: ∅
        │   │   │   ├── statements: ∅
        │   │   │   └── consequent: ∅
        │   │   ├── else_clause: ∅
        │   │   ├── ensure_clause: ∅
        │   │   └── end_keyword_loc: (9,16)-(9,19) = "end"
        │   ├── end_keyword_loc: (9,16)-(9,19) = "end"
        │   └── name: :A
        ├── @ ModuleNode (location: (11,0)-(12,3))
        │   ├── locals: []
        │   ├── module_keyword_loc: (11,0)-(11,6) = "module"
        │   ├── constant_path:
        │   │   @ ConstantPathNode (location: (11,7)-(11,10))
        │   │   ├── parent: ∅
        │   │   ├── child:
        │   │   │   @ ConstantReadNode (location: (11,9)-(11,10))
        │   │   │   └── name: :A
        │   │   └── delimiter_loc: (11,7)-(11,9) = "::"
        │   ├── body: ∅
        │   ├── end_keyword_loc: (12,0)-(12,3) = "end"
        │   └── name: :A
        ├── @ ModuleNode (location: (14,0)-(15,3))
        │   ├── locals: []
        │   ├── module_keyword_loc: (14,0)-(14,6) = "module"
        │   ├── constant_path:
        │   │   @ ConstantPathNode (location: (14,7)-(14,13))
        │   │   ├── parent:
        │   │   │   @ CallNode (location: (14,7)-(14,10))
        │   │   │   ├── flags: ∅
        │   │   │   ├── receiver:
        │   │   │   │   @ ConstantReadNode (location: (14,7)-(14,8))
        │   │   │   │   └── name: :A
        │   │   │   ├── call_operator_loc: ∅
        │   │   │   ├── name: :[]
        │   │   │   ├── message_loc: (14,8)-(14,10) = "[]"
        │   │   │   ├── opening_loc: (14,8)-(14,9) = "["
        │   │   │   ├── arguments: ∅
        │   │   │   ├── closing_loc: (14,9)-(14,10) = "]"
        │   │   │   └── block: ∅
        │   │   ├── child:
        │   │   │   @ ConstantReadNode (location: (14,12)-(14,13))
        │   │   │   └── name: :B
        │   │   └── delimiter_loc: (14,10)-(14,12) = "::"
        │   ├── body: ∅
        │   ├── end_keyword_loc: (15,0)-(15,3) = "end"
        │   └── name: :B
        └── @ ModuleNode (location: (17,0)-(18,3))
            ├── locals: []
            ├── module_keyword_loc: (17,0)-(17,6) = "module"
            ├── constant_path:
            │   @ ConstantPathNode (location: (17,7)-(17,14))
            │   ├── parent:
            │   │   @ CallNode (location: (17,7)-(17,11))
            │   │   ├── flags: ∅
            │   │   ├── receiver:
            │   │   │   @ ConstantReadNode (location: (17,7)-(17,8))
            │   │   │   └── name: :A
            │   │   ├── call_operator_loc: ∅
            │   │   ├── name: :[]
            │   │   ├── message_loc: (17,8)-(17,11) = "[1]"
            │   │   ├── opening_loc: (17,8)-(17,9) = "["
            │   │   ├── arguments:
            │   │   │   @ ArgumentsNode (location: (17,9)-(17,10))
            │   │   │   ├── flags: ∅
            │   │   │   └── arguments: (length: 1)
            │   │   │       └── @ IntegerNode (location: (17,9)-(17,10))
            │   │   │           ├── flags: decimal
            │   │   │           └── value: 1
            │   │   ├── closing_loc: (17,10)-(17,11) = "]"
            │   │   └── block: ∅
            │   ├── child:
            │   │   @ ConstantReadNode (location: (17,13)-(17,14))
            │   │   └── name: :B
            │   └── delimiter_loc: (17,11)-(17,13) = "::"
            ├── body: ∅
            ├── end_keyword_loc: (18,0)-(18,3) = "end"
            └── name: :B