Class: Membrane::Schema::Tuple

Inherits:
Base
  • Object
show all
Defined in:
lib/membrane/schema/tuple.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from Base

#deparse

Constructor Details

#initialize(*elem_schemas) ⇒ Tuple

Returns a new instance of Tuple.



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# File 'lib/membrane/schema/tuple.rb', line 12

def initialize(*elem_schemas)
  @elem_schemas = elem_schemas
end

Instance Attribute Details

#elem_schemas ⇒ Object (readonly)

Returns the value of attribute elem_schemas.



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# File 'lib/membrane/schema/tuple.rb', line 10

def elem_schemas
  @elem_schemas
end

Instance Method Details

#validate(object) ⇒ Object 



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# File 'lib/membrane/schema/tuple.rb', line 16

def validate(object)
  if !object.kind_of?(Array)
    emsg = "Expected instance of Array, given instance of #{object.class}"
    raise Membrane::SchemaValidationError.new(emsg)
  end

  expected = @elem_schemas.length
  actual = object.length

  if actual != expected
    emsg = "Expected #{expected} element(s), given #{actual}"
    raise Membrane::SchemaValidationError.new(emsg)
  end

  errors = {}

  @elem_schemas.each_with_index do |schema, ii|
    begin
      schema.validate(object[ii])
    rescue Membrane::SchemaValidationError => e
      errors[ii] = e
    end
  end

  if errors.size > 0
    emsg = "There were errors at the following indices: " \
           + errors.map { |ii, err| "#{ii} => #{err}" }.join(", ")
    raise Membrane::SchemaValidationError.new(emsg)
  end

  nil
end