module SyntaxTree
module SyntaxTree::ArrayMatch
module SyntaxTree::AssignFormatting
module SyntaxTree::CLI
module SyntaxTree::ContainsAssignment
module SyntaxTree::DSL
module SyntaxTree::HashKeyFormatter
module SyntaxTree::Index
module SyntaxTree::LanguageServer::Request
module SyntaxTree::Mermaid
module SyntaxTree::Parentheses
module SyntaxTree::Quotes
module SyntaxTree::Rake
module SyntaxTree::Reflection
module SyntaxTree::Reflection::Type
module SyntaxTree::Ternaryable
module SyntaxTree::Translation
module SyntaxTree::WithScope
module SyntaxTree::YARV
module SyntaxTree::YARV::Legacy
class SyntaxTree::ARef
class SyntaxTree::ARefField
class SyntaxTree::AliasNode
class SyntaxTree::AliasNode::AliasArgumentFormatter
class SyntaxTree::ArgBlock
class SyntaxTree::ArgParen
class SyntaxTree::ArgStar
class SyntaxTree::Args
class SyntaxTree::ArgsForward
class SyntaxTree::ArrayLiteral
class SyntaxTree::ArrayLiteral::BreakableSpaceSeparator
class SyntaxTree::ArrayLiteral::EmptyWithCommentsFormatter
class SyntaxTree::ArrayLiteral::QSymbolsFormatter
class SyntaxTree::ArrayLiteral::QWordsFormatter
class SyntaxTree::AryPtn
class SyntaxTree::AryPtn::RestFormatter
class SyntaxTree::Assign
class SyntaxTree::Assoc
class SyntaxTree::AssocSplat
class SyntaxTree::BEGINBlock
class SyntaxTree::Backref
class SyntaxTree::Backtick
class SyntaxTree::BareAssocHash
class SyntaxTree::BasicVisitor
class SyntaxTree::BasicVisitor::VisitMethodChecker
class SyntaxTree::BasicVisitor::VisitMethodError
class SyntaxTree::BasicVisitor::VisitMethodsChecker
class SyntaxTree::Begin
class SyntaxTree::Binary
class SyntaxTree::BlockArg
class SyntaxTree::BlockNode
class SyntaxTree::BlockNode::BlockOpenFormatter
class SyntaxTree::BlockVar
class SyntaxTree::BlockVar::Separator
class SyntaxTree::BodyStmt
class SyntaxTree::Break
class SyntaxTree::CHAR
class SyntaxTree::CLI::AST
class SyntaxTree::CLI::Action
class SyntaxTree::CLI::CTags
class SyntaxTree::CLI::Check
class SyntaxTree::CLI::Check::UnformattedError
class SyntaxTree::CLI::Color
class SyntaxTree::CLI::ConfigFile
class SyntaxTree::CLI::Debug
class SyntaxTree::CLI::Debug::NonIdempotentFormatError
class SyntaxTree::CLI::Doc
class SyntaxTree::CLI::Expr
class SyntaxTree::CLI::FileItem
class SyntaxTree::CLI::Format
class SyntaxTree::CLI::Json
class SyntaxTree::CLI::Match
class SyntaxTree::CLI::Options
class SyntaxTree::CLI::STDINItem
class SyntaxTree::CLI::ScriptItem
class SyntaxTree::CLI::Search
class SyntaxTree::CLI::Write
class SyntaxTree::CVar
class SyntaxTree::CallChainFormatter
class SyntaxTree::CallNode
class SyntaxTree::CallOperatorFormatter
class SyntaxTree::Case
class SyntaxTree::ClassDeclaration
class SyntaxTree::Comma
class SyntaxTree::Command
class SyntaxTree::CommandCall
class SyntaxTree::Comment
class SyntaxTree::ConditionalFormatter
class SyntaxTree::Const
class SyntaxTree::ConstPathField
class SyntaxTree::ConstPathRef
class SyntaxTree::ConstRef
class SyntaxTree::DefNode
class SyntaxTree::Defined
class SyntaxTree::DynaSymbol
class SyntaxTree::ENDBlock
class SyntaxTree::Else
class SyntaxTree::Elsif
class SyntaxTree::EmbDoc
class SyntaxTree::EmbExprBeg
class SyntaxTree::EmbExprEnd
class SyntaxTree::EmbVar
class SyntaxTree::EndContent
class SyntaxTree::Ensure
class SyntaxTree::ExcessedComma
class SyntaxTree::Field
class SyntaxTree::FieldVisitor
class SyntaxTree::FloatLiteral
class SyntaxTree::FlowControlFormatter
class SyntaxTree::FndPtn
class SyntaxTree::For
class SyntaxTree::Formatter
class SyntaxTree::Formatter::Options
class SyntaxTree::Formatter::SemanticVersion
class SyntaxTree::GVar
class SyntaxTree::HashKeyFormatter::Identity
class SyntaxTree::HashKeyFormatter::Labels
class SyntaxTree::HashKeyFormatter::Rockets
class SyntaxTree::HashLiteral
class SyntaxTree::HashLiteral::EmptyWithCommentsFormatter
class SyntaxTree::Heredoc
class SyntaxTree::HeredocBeg
class SyntaxTree::HeredocEnd
class SyntaxTree::HshPtn
class SyntaxTree::HshPtn::KeywordFormatter
class SyntaxTree::HshPtn::KeywordRestFormatter
class SyntaxTree::IVar
class SyntaxTree::Ident
class SyntaxTree::IfNode
class SyntaxTree::IfOp
class SyntaxTree::Imaginary
class SyntaxTree::In
class SyntaxTree::Index::AliasMethodDefinition
class SyntaxTree::Index::ClassDefinition
class SyntaxTree::Index::ConstantDefinition
class SyntaxTree::Index::EntryComments
class SyntaxTree::Index::FileComments
class SyntaxTree::Index::FileComments::FileSource
class SyntaxTree::Index::FileComments::Parser
class SyntaxTree::Index::FileComments::StringSource
class SyntaxTree::Index::ISeqBackend
class SyntaxTree::Index::Location
class SyntaxTree::Index::MethodDefinition
class SyntaxTree::Index::ModuleDefinition
class SyntaxTree::Index::ParserBackend
class SyntaxTree::Index::ParserBackend::ConstantNameVisitor
class SyntaxTree::Index::ParserBackend::IndexVisitor
class SyntaxTree::Index::SingletonMethodDefinition
class SyntaxTree::Int
class SyntaxTree::JSONVisitor
class SyntaxTree::Kw
class SyntaxTree::KwRestParam
class SyntaxTree::LBrace
class SyntaxTree::LBracket
class SyntaxTree::LParen
class SyntaxTree::Label
class SyntaxTree::LabelEnd
class SyntaxTree::Lambda
class SyntaxTree::LambdaVar
class SyntaxTree::LanguageServer
class SyntaxTree::LanguageServer::InlayHints
class SyntaxTree::LanguageServer::InlayHints::Hint
class SyntaxTree::LanguageServer::Request::Shape
class SyntaxTree::LanguageServer::Request::Tuple
class SyntaxTree::Location
class SyntaxTree::LoopFormatter
class SyntaxTree::MAssign
class SyntaxTree::MLHS
class SyntaxTree::MLHSParen
class SyntaxTree::MRHS
class SyntaxTree::MatchVisitor
class SyntaxTree::Mermaid::FlowChart
class SyntaxTree::Mermaid::Link
class SyntaxTree::Mermaid::Node
class SyntaxTree::MermaidVisitor
class SyntaxTree::MethodAddBlock
class SyntaxTree::ModuleDeclaration
class SyntaxTree::MutationVisitor
class SyntaxTree::Next
class SyntaxTree::Node
class SyntaxTree::Not
class SyntaxTree::Op
class SyntaxTree::OpAssign
class SyntaxTree::Params
class SyntaxTree::Params::KeywordFormatter
class SyntaxTree::Params::KeywordRestFormatter
class SyntaxTree::Params::OptionalFormatter
class SyntaxTree::Paren
class SyntaxTree::Parser
class SyntaxTree::Parser::MultiByteString
class SyntaxTree::Parser::ParseError
class SyntaxTree::Parser::PinVisitor
class SyntaxTree::Parser::Semicolon
class SyntaxTree::Parser::SingleByteString
class SyntaxTree::Parser::TokenList
class SyntaxTree::Pattern
class SyntaxTree::Pattern::CompilationError
class SyntaxTree::Period
class SyntaxTree::PinnedBegin
class SyntaxTree::PinnedVarRef
class SyntaxTree::PrettyPrintVisitor
class SyntaxTree::Program
class SyntaxTree::QSymbols
class SyntaxTree::QSymbolsBeg
class SyntaxTree::QWords
class SyntaxTree::QWordsBeg
class SyntaxTree::RAssign
class SyntaxTree::RBrace
class SyntaxTree::RBracket
class SyntaxTree::RParen
class SyntaxTree::Rake::CheckTask
class SyntaxTree::Rake::Task
class SyntaxTree::Rake::WriteTask
class SyntaxTree::RangeNode
class SyntaxTree::RationalLiteral
class SyntaxTree::Redo
class SyntaxTree::Reflection::Attribute
class SyntaxTree::Reflection::Node
class SyntaxTree::Reflection::Type::ArrayType
class SyntaxTree::Reflection::Type::TupleType
class SyntaxTree::Reflection::Type::UnionType
class SyntaxTree::RegexpBeg
class SyntaxTree::RegexpContent
class SyntaxTree::RegexpEnd
class SyntaxTree::RegexpLiteral
class SyntaxTree::Rescue
class SyntaxTree::RescueEx
class SyntaxTree::RescueMod
class SyntaxTree::RestParam
class SyntaxTree::Retry
class SyntaxTree::ReturnNode
class SyntaxTree::SClass
class SyntaxTree::Search
class SyntaxTree::Statements
class SyntaxTree::StringConcat
class SyntaxTree::StringContent
class SyntaxTree::StringDVar
class SyntaxTree::StringEmbExpr
class SyntaxTree::StringLiteral
class SyntaxTree::Super
class SyntaxTree::SymBeg
class SyntaxTree::SymbolContent
class SyntaxTree::SymbolLiteral
class SyntaxTree::Symbols
class SyntaxTree::SymbolsBeg
class SyntaxTree::TLamBeg
class SyntaxTree::TLambda
class SyntaxTree::TStringBeg
class SyntaxTree::TStringContent
class SyntaxTree::TStringEnd
class SyntaxTree::TopConstField
class SyntaxTree::TopConstRef
class SyntaxTree::Translation::Parser
class SyntaxTree::Translation::Parser::HeredocBuilder
class SyntaxTree::Translation::RuboCopAST
class SyntaxTree::Unary
class SyntaxTree::Undef
class SyntaxTree::Undef::UndefArgumentFormatter
class SyntaxTree::UnlessNode
class SyntaxTree::UntilNode
class SyntaxTree::VCall
class SyntaxTree::VarField
class SyntaxTree::VarRef
class SyntaxTree::Visitor
class SyntaxTree::VoidStmt
class SyntaxTree::When
class SyntaxTree::When::Separator
class SyntaxTree::WhileNode
class SyntaxTree::WithScope::Scope
class SyntaxTree::WithScope::Scope::Local
class SyntaxTree::Word
class SyntaxTree::Words
class SyntaxTree::WordsBeg
class SyntaxTree::XString
class SyntaxTree::XStringLiteral
class SyntaxTree::YARV::AdjustStack
class SyntaxTree::YARV::AnyToString
class SyntaxTree::YARV::Assembler
class SyntaxTree::YARV::Assembler::ObjectVisitor
class SyntaxTree::YARV::BasicBlock
class SyntaxTree::YARV::Bf
class SyntaxTree::YARV::BranchIf
class SyntaxTree::YARV::BranchNil
class SyntaxTree::YARV::BranchUnless
class SyntaxTree::YARV::CallData
class SyntaxTree::YARV::CheckKeyword
class SyntaxTree::YARV::CheckMatch
class SyntaxTree::YARV::CheckType
class SyntaxTree::YARV::Compiler
class SyntaxTree::YARV::Compiler::Options
class SyntaxTree::YARV::Compiler::RubyVisitor
class SyntaxTree::YARV::Compiler::RubyVisitor::CompilationError
class SyntaxTree::YARV::ConcatArray
class SyntaxTree::YARV::ConcatStrings
class SyntaxTree::YARV::ControlFlowGraph
class SyntaxTree::YARV::ControlFlowGraph::Compiler
class SyntaxTree::YARV::DataFlowGraph
class SyntaxTree::YARV::DataFlowGraph::BlockArgument
class SyntaxTree::YARV::DataFlowGraph::Compiler
class SyntaxTree::YARV::DataFlowGraph::DataFlow
class SyntaxTree::YARV::DataFlowGraph::LocalArgument
class SyntaxTree::YARV::Decompiler
class SyntaxTree::YARV::Decompiler::BlockLabel
class SyntaxTree::YARV::DefineClass
class SyntaxTree::YARV::DefineMethod
class SyntaxTree::YARV::DefineSMethod
class SyntaxTree::YARV::Defined
class SyntaxTree::YARV::DefinedIVar
class SyntaxTree::YARV::Disassembler
class SyntaxTree::YARV::Disassembler::Squished
class SyntaxTree::YARV::Dup
class SyntaxTree::YARV::DupArray
class SyntaxTree::YARV::DupHash
class SyntaxTree::YARV::DupN
class SyntaxTree::YARV::ExpandArray
class SyntaxTree::YARV::GetBlockParam
class SyntaxTree::YARV::GetBlockParamProxy
class SyntaxTree::YARV::GetClassVariable
class SyntaxTree::YARV::GetConstant
class SyntaxTree::YARV::GetGlobal
class SyntaxTree::YARV::GetInstanceVariable
class SyntaxTree::YARV::GetLocal
class SyntaxTree::YARV::GetLocalWC0
class SyntaxTree::YARV::GetLocalWC1
class SyntaxTree::YARV::GetSpecial
class SyntaxTree::YARV::Instruction
class SyntaxTree::YARV::InstructionSequence
class SyntaxTree::YARV::InstructionSequence::CatchBreak
class SyntaxTree::YARV::InstructionSequence::CatchEnsure
class SyntaxTree::YARV::InstructionSequence::CatchEntry
class SyntaxTree::YARV::InstructionSequence::CatchNext
class SyntaxTree::YARV::InstructionSequence::CatchRedo
class SyntaxTree::YARV::InstructionSequence::CatchRescue
class SyntaxTree::YARV::InstructionSequence::CatchRetry
class SyntaxTree::YARV::InstructionSequence::InstructionList
class SyntaxTree::YARV::InstructionSequence::InstructionList::Node
class SyntaxTree::YARV::InstructionSequence::Label
class SyntaxTree::YARV::InstructionSequence::Stack
class SyntaxTree::YARV::Intern
class SyntaxTree::YARV::InvokeBlock
class SyntaxTree::YARV::InvokeSuper
class SyntaxTree::YARV::Jump
class SyntaxTree::YARV::Leave
class SyntaxTree::YARV::Legacy::GetClassVariable
class SyntaxTree::YARV::Legacy::OptGetInlineCache
class SyntaxTree::YARV::Legacy::OptSetInlineCache
class SyntaxTree::YARV::Legacy::SetClassVariable
class SyntaxTree::YARV::LocalTable
class SyntaxTree::YARV::LocalTable::BlockLocal
class SyntaxTree::YARV::LocalTable::Lookup
class SyntaxTree::YARV::LocalTable::PlainLocal
class SyntaxTree::YARV::NewArray
class SyntaxTree::YARV::NewArrayKwSplat
class SyntaxTree::YARV::NewHash
class SyntaxTree::YARV::NewRange
class SyntaxTree::YARV::Nop
class SyntaxTree::YARV::ObjToString
class SyntaxTree::YARV::Once
class SyntaxTree::YARV::OptAnd
class SyntaxTree::YARV::OptAref
class SyntaxTree::YARV::OptArefWith
class SyntaxTree::YARV::OptAset
class SyntaxTree::YARV::OptAsetWith
class SyntaxTree::YARV::OptCaseDispatch
class SyntaxTree::YARV::OptDiv
class SyntaxTree::YARV::OptEmptyP
class SyntaxTree::YARV::OptEq
class SyntaxTree::YARV::OptGE
class SyntaxTree::YARV::OptGT
class SyntaxTree::YARV::OptGetConstantPath
class SyntaxTree::YARV::OptLE
class SyntaxTree::YARV::OptLT
class SyntaxTree::YARV::OptLTLT
class SyntaxTree::YARV::OptLength
class SyntaxTree::YARV::OptMinus
class SyntaxTree::YARV::OptMod
class SyntaxTree::YARV::OptMult
class SyntaxTree::YARV::OptNEq
class SyntaxTree::YARV::OptNewArrayMax
class SyntaxTree::YARV::OptNewArrayMin
class SyntaxTree::YARV::OptNilP
class SyntaxTree::YARV::OptNot
class SyntaxTree::YARV::OptOr
class SyntaxTree::YARV::OptPlus
class SyntaxTree::YARV::OptRegExpMatch2
class SyntaxTree::YARV::OptSendWithoutBlock
class SyntaxTree::YARV::OptSize
class SyntaxTree::YARV::OptStrFreeze
class SyntaxTree::YARV::OptStrUMinus
class SyntaxTree::YARV::OptSucc
class SyntaxTree::YARV::Pop
class SyntaxTree::YARV::PutNil
class SyntaxTree::YARV::PutObject
class SyntaxTree::YARV::PutObjectInt2Fix0
class SyntaxTree::YARV::PutObjectInt2Fix1
class SyntaxTree::YARV::PutSelf
class SyntaxTree::YARV::PutSpecialObject
class SyntaxTree::YARV::PutString
class SyntaxTree::YARV::SeaOfNodes
class SyntaxTree::YARV::SeaOfNodes::Compiler
class SyntaxTree::YARV::SeaOfNodes::Edge
class SyntaxTree::YARV::SeaOfNodes::InsnNode
class SyntaxTree::YARV::SeaOfNodes::MergeNode
class SyntaxTree::YARV::SeaOfNodes::PhiNode
class SyntaxTree::YARV::SeaOfNodes::SubGraph
class SyntaxTree::YARV::Send
class SyntaxTree::YARV::SetBlockParam
class SyntaxTree::YARV::SetClassVariable
class SyntaxTree::YARV::SetConstant
class SyntaxTree::YARV::SetGlobal
class SyntaxTree::YARV::SetInstanceVariable
class SyntaxTree::YARV::SetLocal
class SyntaxTree::YARV::SetLocalWC0
class SyntaxTree::YARV::SetLocalWC1
class SyntaxTree::YARV::SetN
class SyntaxTree::YARV::SetSpecial
class SyntaxTree::YARV::SplatArray
class SyntaxTree::YARV::Swap
class SyntaxTree::YARV::Throw
class SyntaxTree::YARV::ToRegExp
class SyntaxTree::YARV::TopN
class SyntaxTree::YARV::VM
class SyntaxTree::YARV::VM::BlockFrame
class SyntaxTree::YARV::VM::BreakError
class SyntaxTree::YARV::VM::ClassFrame
class SyntaxTree::YARV::VM::Frame
class SyntaxTree::YARV::VM::FrozenCore
class SyntaxTree::YARV::VM::Jump
class SyntaxTree::YARV::VM::Leave
class SyntaxTree::YARV::VM::MethodFrame
class SyntaxTree::YARV::VM::NextError
class SyntaxTree::YARV::VM::NullEvents
class SyntaxTree::YARV::VM::RescueFrame
class SyntaxTree::YARV::VM::ReturnError
class SyntaxTree::YARV::VM::STDOUTEvents
class SyntaxTree::YARV::VM::Stack
class SyntaxTree::YARV::VM::ThrownError
class SyntaxTree::YARV::VM::TopFrame
class SyntaxTree::YieldNode
class SyntaxTree::ZSuper
syntax_tree
6.1.1
# parent
def parent stack[-2] end