Class: Synvert::Core::NodeQuery::Compiler::Attribute

Inherits:
Object
  • Object
show all
Defined in:
lib/synvert/core/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 (Symbol) (defaults to: :==) —

    the operator



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

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

Instance Method Details

#match?(node) ⇒ Boolean

Check if the node matches the attribute.

Parameters:

Returns:



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# File 'lib/synvert/core/node_query/compiler/attribute.rb', line 19

def match?(node)
  @value.base_node = node if @value.is_a?(DynamicAttribute)
  node && @value.match?(node.child_node_by_name(@key), @operator)
end

#to_s ⇒ Object 



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

def to_s
  case @operator
  when :!=
    "#{@key}!=#{@value}"
  when :=~
    "#{@key}=~#{@value}"
  when :!~
    "#{@key}!~#{@value}"
  when :>
    "#{@key}>#{@value}"
  when :>=
    "#{@key}>=#{@value}"
  when :<
    "#{@key}<#{@value}"
  when :<=
    "#{@key}<=#{@value}"
  when :in
    "#{@key} in (#{@value})"
  when :not_in
    "#{@key} not in (#{@value})"
  when :includes
    "#{@key} includes #{@value}"
  else
    "#{@key}=#{@value}"
  end
end