class RubyVM::AbstractSyntaxTree::Node

Returns all tokens for the input script regardless the receiver node. Returns nil if keep_tokens is not enabled when parse method is called.

root = RubyVM::AbstractSyntaxTree.parse("x = 1 + 2", keep_tokens: true)
root.all_tokens # => [[0, :tIDENTIFIER, "x", [1, 0, 1, 1]], [1, :tSP, " ", [1, 1, 1, 2]], ...]
root.children[-1].all_tokens # => [[0, :tIDENTIFIER, "x", [1, 0, 1, 1]], [1, :tSP, " ", [1, 1, 1, 2]], ...]

Returns AST nodes under this one. Each kind of node has different children, depending on what kind of node it is.

The returned array may contain other nodes or nil.

The column number in the source code where this AST’s text began.

The line number in the source code where this AST’s text began.

The column number in the source code where this AST’s text ended.

The line number in the source code where this AST’s text ended.

Returns location objects associated with the AST node. The returned array contains RubyVM::AbstractSyntaxTree::Location.

Returns tokens corresponding to the location of the node. Returns nil if keep_tokens is not enabled when parse method is called.

root = RubyVM::AbstractSyntaxTree.parse("x = 1 + 2", keep_tokens: true)
root.tokens # => [[0, :tIDENTIFIER, "x", [1, 0, 1, 1]], [1, :tSP, " ", [1, 1, 1, 2]], ...]
root.tokens.map{_1[2]}.join # => "x = 1 + 2"

Token is an array of:

• id

• token type

• source code text

• location [ first_lineno, first_column, last_lineno, last_column ]

Returns the type of this node as a symbol.

root = RubyVM::AbstractSyntaxTree.parse("x = 1 + 2")
root.type # => :SCOPE
lasgn = root.children[2]
lasgn.type # => :LASGN
call = lasgn.children[1]
call.type # => :OPCALL