Class: Loxxy::Ast::LoxNode

Inherits:

Object

• Object
• Loxxy::Ast::LoxNode

Extended by:

ASTVisitee

Defined in:

lib/loxxy/ast/lox_node.rb

Overview

Abstract class. Instances of its subclasses represent nodes of an abstract syntax tree that is the product of the parse of an input text.

Direct Known Subclasses

LoxClassStmt, LoxCompoundExpr, LoxFunStmt, LoxGetExpr, LoxLiteralExpr, LoxNoopExpr, LoxSetExpr, LoxSuperExpr, LoxThisExpr, LoxVariableExpr

Instance Attribute Summary

• #position ⇒ Rley::Lexical::Position readonly

  Position of the entry in the input stream.

Instance Method Summary

• #accept(_visitor) ⇒ Object

  Abstract method (must be overriden in subclasses).

• #done! ⇒ Object

  Notification that the parsing was successfully completed.

• #initialize(aPosition) ⇒ LoxNode constructor

  A new instance of LoxNode.

Methods included from ASTVisitee

define_accept, snake_case

Constructor Details

#initialize(aPosition) ⇒ LoxNode

Returns a new instance of LoxNode.

Parameters:

• aPosition (Rley::Lexical::Position) —

  Position of the entry in the input stream.

# File 'lib/loxxy/ast/lox_node.rb', line 18

def initialize(aPosition)
  @position = aPosition
end

Instance Attribute Details

#position ⇒ Rley::Lexical::Position (readonly)

Returns Position of the entry in the input stream.

Returns:

• (Rley::Lexical::Position) —

  Position of the entry in the input stream.

# File 'lib/loxxy/ast/lox_node.rb', line 15

def position
  @position
end

Instance Method Details

#accept(_visitor) ⇒ Object

Abstract method (must be overriden in subclasses). Part of the 'visitee' role in Visitor design pattern.

Parameters:

• _visitor (LoxxyTreeVisitor) —

  the visitor

Raises:

• (NotImplementedError)

# File 'lib/loxxy/ast/lox_node.rb', line 30

def accept(_visitor)
  raise NotImplementedError
end

#done! ⇒ Object

Notification that the parsing was successfully completed

# File 'lib/loxxy/ast/lox_node.rb', line 23

def done!
  # Default: do nothing ...
end