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Class: RubyVM::AbstractSyntaxTree::Node

Relationships & Source Files
Inherits: Object
Defined in: ast.rb,
ast.c

Overview

Node instances are created by parse methods in ::RubyVM::AbstractSyntaxTree.

This class is MRI specific.

Instance Method Summary

Instance Method Details

#children ⇒ Array

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.

[ GitHub ] 

  


# File 'ast.rb', line 133



def children
  Primitive.ast_node_children
end


  








  

    #first_column  ⇒ Integer   



  

    

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


  



  [ GitHub ]


  

  


# File 'ast.rb', line 106



def first_column
  Primitive.ast_node_first_column
end


  








  

    #first_lineno  ⇒ Integer   



  

    

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


  



  [ GitHub ]


  

  


# File 'ast.rb', line 98



def first_lineno
  Primitive.ast_node_first_lineno
end


  








  

    #inspect  ⇒ String   



  

    

Returns debugging information about this node as a string.


  



  [ GitHub ]


  

  


# File 'ast.rb', line 141



def inspect
  Primitive.ast_node_inspect
end


  








  

    #last_column  ⇒ Integer   



  

    

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


  



  [ GitHub ]


  

  


# File 'ast.rb', line 122



def last_column
  Primitive.ast_node_last_column
end


  








  

    #last_lineno  ⇒ Integer   



  

    

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


  



  [ GitHub ]


  

  


# File 'ast.rb', line 114



def last_lineno
  Primitive.ast_node_last_lineno
end


  








  

    #type  ⇒ Symbol   



  

    

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


  



  [ GitHub ]


  

  


# File 'ast.rb', line 90



def type
  Primitive.ast_node_type
end