Class: NodeQuery::Compiler::Attribute

Inherits:
Object
  • Object
show all
Defined in:
lib/node_query/compiler/attribute.rb

Overview

Attribute is a pair of key, value and operator,

Instance Method Summary collapse

Constructor Details

#initialize(key:, value:, operator: '=') ⇒ Attribute

Initialize a Attribute.

Parameters:

  • key (String) —

    the key

  • value —

    the value can be any class implement Comparable

  • operator (String) (defaults to: '=') —

    the operator



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# File 'lib/node_query/compiler/attribute.rb', line 10

def initialize(key:, value:, operator: '=')
  @key = key
  @value = value
  @operator = operator
end

Instance Method Details

#match?(node, base_node) ⇒ Boolean

Check if the node matches the attribute.

Parameters:

  • node (Node) —

    the node

  • base_node (Node) —

    the bae node for evaluated value

Returns:



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# File 'lib/node_query/compiler/attribute.rb', line 20

def match?(node, base_node)
  node && @value.match?(NodeQuery::Helper.get_target_node(node, @key), base_node, @operator)
end

#to_s ⇒ Object 



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# File 'lib/node_query/compiler/attribute.rb', line 24

def to_s
  case @operator
  when '^=', '$=', '*=', '!=', '=~', '!~', '>=', '>', '<=', '<'
    "#{@key}#{@operator}#{@value}"
  when 'in'
    "#{@key} in (#{@value})"
  when 'not_in'
    "#{@key} not in (#{@value})"
  when 'includes'
    "#{@key} includes #{@value}"
  when 'not_includes'
    "#{@key} not includes #{@value}"
  else
    "#{@key}=#{@value}"
  end
end