Class: Dry::Data::Compiler

Inherits:
Object
  • Object
show all
Defined in:
lib/dry/data/compiler.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(registry) ⇒ Compiler

Returns a new instance of Compiler.



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# File 'lib/dry/data/compiler.rb', line 6

def initialize(registry)
  @registry = registry
end

Instance Attribute Details

#registry ⇒ Object (readonly)

Returns the value of attribute registry.



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# File 'lib/dry/data/compiler.rb', line 4

def registry
  @registry
end

Instance Method Details

#call(ast) ⇒ Object 



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# File 'lib/dry/data/compiler.rb', line 10

def call(ast)
  visit(ast)
end

#visit(node, *args) ⇒ Object 



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# File 'lib/dry/data/compiler.rb', line 14

def visit(node, *args)
  send(:"visit_#{node[0]}", node[1], *args)
end

#visit_hash(node) ⇒ Object 



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# File 'lib/dry/data/compiler.rb', line 32

def visit_hash(node)
  constructor, schema = node
  registry['hash'].public_send(constructor, schema.map { |key| visit(key) }.reduce(:merge))
end

#visit_key(node) ⇒ Object 



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# File 'lib/dry/data/compiler.rb', line 37

def visit_key(node)
  name, types = node
  { name => visit(types) }
end

#visit_sum(node) ⇒ Object 



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# File 'lib/dry/data/compiler.rb', line 28

def visit_sum(node)
  node.map { |type| visit(type) }.reduce(:|)
end

#visit_type(node) ⇒ Object 



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# File 'lib/dry/data/compiler.rb', line 18

def visit_type(node)
  type, args = node

  if respond_to?(:"visit_#{type}")
    send(:"visit_#{type}", args)
  else
    registry[type]
  end
end