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Contents
require 'transproc/composite' module Transproc # Transformation proc wrapper allowing composition of multiple procs into # a data-transformation pipeline. # # This is used by Transproc to wrap registered methods. # # @api private class Function # Wrapped proc or another composite function # # @return [Proc,Composed] # # @api private attr_reader :fn # Additional arguments that will be passed to the wrapped proc # # @return [Array] # # @api private attr_reader :args # @api private def initialize(fn, options) @fn = fn @args = options[:args] end # Call the wrapped proc # # @param [Object] value The input value # # @alias [] # # @api public def call(*value) fn[*value, *args] rescue => e raise MalformedInputError.new(@fn, value, e) end alias_method :[], :call # Compose this function with another function or a proc # # @param [Proc,Function] # # @return [Composite] # # @alias :>> # # @api public def compose(other) Composite.new(self, other) end alias_method :+, :compose alias_method :>>, :compose # Return a simple AST representation of this function # # @return [Array] # # @api public def to_ast identifier = fn.instance_of?(Proc) ? fn : fn.name [identifier, args] end end end
Version data entries
1 entries across 1 versions & 1 rubygems
Version | Path |
---|---|
transproc-0.2.4 | lib/transproc/function.rb |