AttributeStruct is a DSL helper library. It provides support for programmatic generation of complex data structures.
Under the hood, AttributeStruct makes use of Ruby's BasicObject class and the
#method_missing method to bring a clean and concise way of generating data
structures. Deeply nested Hashes can be built using method chaining, block
structures, or both. Evaluation of a structure is performed top down, allowing
access to previously set data values within the structure during evaluation.
require 'attribute_struct'
AttributeStruct.new do
this.is.a.deeply.nested.hash true
end.dump!
# => {"this"=>{"is"=>{"a"=>{"deeply"=>{"nested"=>{"hash"=>true}}}}}}require 'attribute_struct'
AttributeStruct.new do
this do
is do
a do
deeply do
nested do
hash true
end
end
end
end
end
end.dump!
# => {"this"=>{"is"=>{"a"=>{"deeply"=>{"nested"=>{"hash"=>true}}}}}}require 'attribute_struct'
AttributeStruct.new do
this.is.a do
deeply.nested do
hash true
end
end
end.dump!
# => {"this"=>{"is"=>{"a"=>{"deeply"=>{"nested"=>{"hash"=>true}}}}}}require 'attribute_struct'
AttributeStruct.new do
this.is.a do
deeply.nested do
hash true
end
deeply do
nested.other_hash true
end
end
end.dump!
# => {"this"=>{"is"=>{"a"=>{"deeply"=>{"nested"=>{"hash"=>true,"other_hash"=>true}}}}}}require 'attribute_struct'
AttributeStruct.new do
this.is.a do
deeply.nested do
hash true
end
end
this.is.a.deeply.nested.other_hash true
end.dump!
# => {"this"=>{"is"=>{"a"=>{"deeply"=>{"nested"=>{"hash"=>true,"other_hash"=>true}}}}}}require 'attribute_struct'
AttributeStruct.new do
this.is.a do
deeply.nested do
hash true
end
end
this.is.a.deeply.nested.other_hash true
this.is.a.deeply.nested.delete!(:hash)
end.dump!
# => {"this"=>{"is"=>{"a"=>{"deeply"=>{"nested"=>{"other_hash"=>true}}}}}}require 'attribute_struct'
AttributeStruct.new do
this.is.a do
deeply.nested do
hash 'my_value'
end
end
this.is.a.deeply.nested do
other_hash data![:hash]
end
end.dump!
# => {"this"=>{"is"=>{"a"=>{"deeply"=>{"nested"=>{"hash"=>"my_value","other_hash"=>"my_value"}}}}}}require 'attribute_struct'
AttributeStruct.new do
this.is.a do
deeply.nested do
hash 'my_value'
end
end
this.is.a.deeply.nested do
other_hash keys!
end
end.dump!
# => {"this"=>{"is"=>{"a"=>{"deeply"=>{"nested"=>{"hash"=>"my_value","other_hash"=>["hash"]}}}}}}require 'attribute_struct'
AttributeStruct.new do
this.is.a do
deeply do
state 'sunny'
nested do
hash parent!.state
end
end
end
end.dump!
# => {"this"=>{"is"=>{"a"=>{"deeply"=>{"state"=>"sunny", "nested"=>{"hash"=>"sunny"}}}}}}require 'attribute_struct'
AttributeStruct.new do
this.is.a do
deeply do
state 'sunny'
nested do
hash root!.this.is.a.deeply.state
end
end
end
end.dump!
# => {"this"=>{"is"=>{"a"=>{"deeply"=>{"state"=>"sunny", "nested"=>{"hash"=>"sunny"}}}}}}require 'attribute_struct'
AttributeStruct.new do
self._camel_keys = true
this.is.a.deeply.nested_camel.hash true
end.dump!
# => {"This"=>{"Is"=>{"A"=>{"Deeply"=>{"NestedCamel"=>{"Hash"=>true}}}}}}require 'attribute_struct'
AttributeStruct.new do
self._camel_keys = true
self._camel_style = :no_leading
this.is.a.deeply.nested_camel.hash true
end.dump!
# => {"this"=>{"is"=>{"a"=>{"deeply"=>{"nestedCamel"=>{"hash"=>true}}}}}}require 'attribute_struct'
AttributeStruct.new do
self._camel_keys = true
this.is.a.deeply.nested_camel.hash true
this.set!('horse'.no_hump!, true)
end.dump!
# => {"This"=>{"Is"=>{"A"=>{"Deeply"=>{"NestedCamel"=>{"Hash"=>true}}}}},"horse" => true}Libraries utilizing AttributeStruct:
- SparkleFormation: http://www.sparkleformation.io
- Bogo Config: https://github.com/spox/bogo-config
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