Class: AbstractMapper::Rules::Sole Abstract

Inherits:

Base

• Object
• Base
• AbstractMapper::Rules::Sole

Defined in:

lib/abstract_mapper/rules/sole.rb

Overview

This class is abstract.

The abstract class that describes the rule to be applied to sole nodes.

The subclass should implement two instance methods:

• ‘#optimize?` to check if the optimization should be applied to the node

• ‘#optimize` that should return the optimized node

Examples:

class RemoveEmptyList < AbstractMapper::Rules::Sole
  def optimize?
    node.is_a?(List) && node.empty?
  end

  def optimize
  end
end

Instance Attribute Summary

• #node ⇒ AbstractMapper::AST::Node readonly

  The node to be optimized.

Attributes inherited from Base

#nodes

Class Method Summary

• .initialize(node) ⇒ Object
• .new(node) ⇒ AbstractMapper::Rules::Base

  Creates a rule applied to the sole node.

Methods inherited from Base

#call, #initialize, #optimize, #optimize?, transproc

Constructor Details

This class inherits a constructor from AbstractMapper::Rules::Base

Instance Attribute Details

#node ⇒ AbstractMapper::AST::Node (readonly)

Returns The node to be optimized.

Returns:

• (AbstractMapper::AST::Node) —

  The node to be optimized

# File 'lib/abstract_mapper/rules/sole.rb', line 40

def node
  @node
end

Class Method Details

.initialize(node) ⇒ Object

# File 'lib/abstract_mapper/rules/sole.rb', line 51

def initialize(node)
  @node = node
  super
end

.new(node) ⇒ AbstractMapper::Rules::Base

Creates a rule applied to the sole node

Parameters:

• node (AbstractMapper::AST::Node)

Returns:

• (AbstractMapper::Rules::Base)

# File 'lib/abstract_mapper/rules/sole.rb', line 42