Class: FEEL::QualifiedName

Inherits:
Node
  • Object
show all
Defined in:
lib/feel/nodes.rb

Overview

  1. qualified name = name , { “.” , name } ;

Instance Method Summary collapse

Methods inherited from Node

#access_property, #qualified_names_in_context, #raise_evaluation_error

Instance Method Details

#context_get(context, key, root: :nil) ⇒ Object

Get a key from the context, using symbol/string lookup, with errors if need be, and optionally overriding the root object for full path during errors.



297
298
299
300
301
302
303
304
305
306
307
 
# File 'lib/feel/nodes.rb', line 297

def context_get(context, key, root: :nil)
  root = context if root == :nil
  if context.key?(key.to_sym)
    context[key.to_sym]
  elsif context.key?(key)
    context[key]
  else
    raise_evaluation_error(head.text_value + tail.text_value, root) if FEEL.config.strict
    nil
  end
end

#eval(context = {}) ⇒ Object 



272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
 
# File 'lib/feel/nodes.rb', line 272

def eval(context = {})
  head_name = head.eval(context)

  if tail.empty?
    context_get(context, head_name)
  else
    initial_value = context_get(context, head_name)

    # Process each segment in the tail, evaluating names to handle backticks
    tail.elements.inject(initial_value) do |value, element|
      return nil unless value

      key = element.name.eval(context)
      if value.respond_to?(:key?)
        context_get(value, key, root: context)
      else
        access_property(value, key)
      end
    end
  end
end