Class: Subaltern::Block

Inherits:

Object

• Object
• Subaltern::Block

Defined in:

lib/subaltern/evaluator.rb

Overview

Wrapper for Ruby blocks.

Instance Method Summary

• #call(context, arguments, new_context = true) ⇒ Object
• #initialize(tree) ⇒ Block constructor

  A new instance of Block.

Constructor Details

#initialize(tree) ⇒ Block

Returns a new instance of Block.

# File 'lib/subaltern/evaluator.rb', line 240

def initialize(tree)

  @arglist = Array(refine(tree[0] || [])).flatten
  @tree = tree[1]
end

Instance Method Details

#call(context, arguments, new_context = true) ⇒ Object

# File 'lib/subaltern/evaluator.rb', line 246

def call(context, arguments, new_context=true)

  arguments = arguments.flatten

  con = new_context ? Context.new(context, {}) : context

  @arglist.each_with_index { |a, i| con[a] = arguments[i] }

  Subaltern.eval_tree(con, @tree)
end