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Contents
require 'bigdecimal'
require 'date'
module Datacaster
class DefinitionDSL
include Datacaster::Predefined
# Translates hashes like {a: <IntegerChecker>} to <HashSchema {a: <IntegerChecker>}>
# and arrays like [<IntegerChecker>] to <ArraySchema <IntegerChecker>>
def self.expand(definition)
case definition
when Datacaster::Base
definition
when Array
if definition.length != 1
raise ArgumentError.new("Datacaster: DSL array definitions must have exactly 1 element in the array, e.g. [integer]")
end
ArraySchema.new(expand(definition.first))
when Hash
HashSchema.new(definition.transform_values { |x| expand(x) })
else
return definition if definition.respond_to?(:call)
raise ArgumentError.new("Datacaster: Unknown definition #{definition.inspect}, which doesn't respond to #call")
end
end
def self.eval(&block)
new.instance_eval(&block)
end
def method_missing(m, *args)
arg_string = args.empty? ? "" : "(#{args.map(&:inspect).join(', ')})"
raise RuntimeError, "Datacaster: unknown definition '#{m}#{arg_string}'", caller
end
end
end
Version data entries
12 entries across 12 versions & 1 rubygems