Class: Ree::Contracts::HashValidator

Inherits:
BaseValidator show all
Defined in:
lib/ree/contracts/validators/hash_validator.rb

Instance Attribute Summary collapse

Attributes inherited from BaseValidator

#contract

Instance Method Summary collapse

Methods included from Truncatable

#truncate

Constructor Details

#initialize(contract) ⇒ HashValidator

Returns a new instance of HashValidator.



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# File 'lib/ree/contracts/validators/hash_validator.rb', line 9

def initialize(contract)
  super(contract)

  @opt_dict = Set.new

  @validators = contract
    .transform_values { |cont| Validators.fetch_for(cont) }
    .transform_keys { |key|
      next key unless key.is_a?(String) || key.is_a?(Symbol)

      key_str = key.to_s
      next key unless key_str.end_with?('?') && key_str.length > 1

      opt_key = key_str[0..-2]
      opt_key = opt_key.to_sym if key.is_a? Symbol
      @opt_dict << opt_key

      opt_key
    }
end

Instance Attribute Details

#opt_dict ⇒ Object (readonly)

Returns the value of attribute opt_dict.



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# File 'lib/ree/contracts/validators/hash_validator.rb', line 7

def opt_dict
  @opt_dict
end

#validators ⇒ Object (readonly)

Returns the value of attribute validators.



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# File 'lib/ree/contracts/validators/hash_validator.rb', line 7

def validators
  @validators
end

Instance Method Details

#call(value) ⇒ Object 



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# File 'lib/ree/contracts/validators/hash_validator.rb', line 30

def call(value)
  return false unless value.is_a?(Hash)
  return false unless value.all? { |key, _| validators.has_key?(key) }

  validators.all? do |key, validator|
    value.has_key?(key) ? validator.call(value[key]) : optional?(key)
  end
end

#message(value, name, lvl = 1) ⇒ Object 



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# File 'lib/ree/contracts/validators/hash_validator.rb', line 43

def message(value, name, lvl = 1)
  unless value.is_a?(Hash)
    return "expected Hash, got #{value.class} => #{truncate(value.inspect)}"
  end

  errors = []
  sps = "  " * lvl

  validators.each do |key, validator|
    if errors.size > 3
      errors << "\n\t#{sps} - ..."
      break
    end

    unless value.key?(key)
      errors << "\n\t#{sps} - #{name}[#{key.inspect}]: missing" unless optional?(key)
      next
    end

    val = value[key]
    next if validator.call(val)

    msg = validator.message(val, "#{name}[#{key.inspect}]", lvl + 1)
    errors << "\n\t#{sps} - #{name}[#{key.inspect}]: #{msg}"
  end

  value.each do |key, val|
    if errors.size > 3
      errors << "\n\t#{sps} - ..."
      break
    end

    next if validators.key?(key)

    errors << "\n\t#{sps} - #{name}[#{key.inspect}]: unexpected"
  end

  errors.join
end

#to_s ⇒ Object 



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# File 'lib/ree/contracts/validators/hash_validator.rb', line 39

def to_s
  "{#{validators.map { |k, v| "#{key_to_s(k)} => #{v.to_s}" }.join(', ')}}"
end