Class: JsonEmitter::Emitter

Inherits:
Object
  • Object
show all
Defined in:
lib/json-emitter/emitter.rb

Overview

Builds Enumerators that yield JSON from Ruby Arrays or Hashes.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Emitter 



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# File 'lib/json-emitter/emitter.rb', line 9

def initialize
  @context = Context.new
end

Instance Attribute Details

#context ⇒ JsonEmitter::Context (readonly) 



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# File 'lib/json-emitter/emitter.rb', line 7

def context
  @context
end

Instance Method Details

#array(enum) { ... } ⇒ Enumerator

Generates an Enumerator that will stream out a JSON array.

Yields:

  • If a block is given, it will be yielded each value in the array. The return value from the block will be converted to JSON instead of the original value.



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# File 'lib/json-emitter/emitter.rb', line 20

def array(enum, &mapper)
  Enumerator.new { |y|
    context.execute {
      array_generator(enum, &mapper).each { |json_val|
        y << json_val
      }
    }
  }
end

#object(hash) ⇒ Enumerator

Generates an Enumerator that will stream out a JSON object.



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# File 'lib/json-emitter/emitter.rb', line 36

def object(hash)
  Enumerator.new { |y|
    context.execute {
      object_generator(hash).each { |json_val|
        y << json_val
      }
    }
  }
end