Class: JMESPath::Nodes::KeysFunction Private
- 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 inherited from Function
Instance Method Summary collapse
- #call(args) ⇒ Object private
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 270 def call(args) if args.count == 1 value = args.first if hash_like?(value) case value when Hash then value.keys.map(&:to_s) when Struct then value.members.map(&:to_s) else raise NotImplementedError end else raise Errors::InvalidTypeError, "function keys() expects a hash" end else raise Errors::InvalidArityError, "function keys() expects one argument" end end |