Class: JMESPath::Nodes::SortByFunction Private

Inherits:
Function show all
Includes:
TypeChecker
Defined in:
lib/jmespath/nodes/function.rb

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

Constant Summary

Constants included from TypeChecker

TypeChecker::ARRAY_TYPE, TypeChecker::BOOLEAN_TYPE, TypeChecker::EXPRESSION_TYPE, TypeChecker::NULL_TYPE, TypeChecker::NUMBER_TYPE, TypeChecker::OBJECT_TYPE, TypeChecker::STRING_TYPE, TypeChecker::TYPE_NAMES

Constants inherited from Function

Function::FUNCTIONS

Instance Method Summary collapse

Methods included from TypeChecker

#get_type

Methods inherited from Function

create, #initialize, #optimize, #visit

Methods inherited from Node

#chains_with?, #hash_like?, #optimize, #visit

Constructor Details

This class inherits a constructor from JMESPath::Nodes::Function

Instance Method Details

#call(args) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/jmespath/nodes/function.rb', line 394

def call(args)
  if args.count == 2
    if get_type(args[0]) == ARRAY_TYPE && get_type(args[1]) == EXPRESSION_TYPE
      values = args[0]
      expression = args[1]
      values.sort do |a,b|
        a_value = expression.eval(a)
        b_value = expression.eval(b)
        a_type = get_type(a_value)
        b_type = get_type(b_value)
        if (a_type == STRING_TYPE || a_type == NUMBER_TYPE) && a_type == b_type
          a_value <=> b_value
        else
          raise Errors::InvalidTypeError, "function sort() expects values to be an array of numbers or integers"
        end
      end
    else
      raise Errors::InvalidTypeError, "function sort_by() expects an array and an expression"
    end
  else
    raise Errors::InvalidArityError, "function sort_by() expects two arguments"
  end
end