Class: Cauldron::StatementGenerator

Inherits:
Object
  • Object
show all
Defined in:
lib/cauldron/statement_generator.rb

Instance Method Summary collapse

Instance Method Details

#branch_method(instance, dynamic_method) ⇒ Object 



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# File 'lib/cauldron/statement_generator.rb', line 101

def branch_method(instance, dynamic_method)
  if requires_arguments?(instance, dynamic_method)
    return %q{
      def branch?
        false
      end
    }        
  end

  if expects_block?(instance, dynamic_method)
    return %q{
      def branch?
        true
      end          
    }
  end
  %q{
    def branch?
      false
    end          
  }
end

#build(instance, dynamic_methods, declare_variable = false) ⇒ Object

Build appropriate classes that can build appropriate instances - instances must have the constants



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# File 'lib/cauldron/statement_generator.rb', line 7

def build(instance,dynamic_methods,declare_variable=false)
  dynamic_methods.collect do |x|
    build_template(instance,x)
  end
end

#build_class(instance, dynamic_method) ⇒ Object

Raises:

  • (StandardError) 


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# File 'lib/cauldron/statement_generator.rb', line 187

def build_class(instance, dynamic_method)
  sexp = template_sexp(instance, dynamic_method)
  information = { constants: false }
  
  template_name = dynamic_template_name(instance, dynamic_method)

  # http://ruby-doc.org/core-2.3.0/Class.html
  # http://stackoverflow.com/questions/4113479/dynamic-class-definition-with-a-class-name
  unless Object.const_defined? template_name
    c = Object.const_set(
          template_name,  
          Class.new do

            attr_reader :indexes, :dynamic_name, :sexp_methods
            attr_accessor :failed_uses                

            def initialize(information, sexp_methods)
              @information, @sexp_methods = information, sexp_methods
              @failed_uses = []
            end  

            # NOTE: These theses classes define the constants
            def statement_classes(examples = nil)

              #binding.pry

              # Find the constants
              b = Object.const_set(
                self.class.to_s+rand(4000000).to_s,
                Class.new do

                  include Cauldron::Operator
                  include Cauldron::DynamicOperatorModule   

                  attr_reader :indexes        
                  attr_accessor :failed_uses     

                  def initialize(indexes)
                    @indexes = indexes
                    @failed_uses = []
                  end

                  def self.context_instances(contexts)
                    temp = []
                    contexts.each do |context|
                      temp << context.keys.collect(&:to_s).select {|x| x.match(/var\d/) }
                    end
                    results = temp.flatten.uniq
                    
                    variable_numbers = results.collect { |x| x.match(/var(\d+)/)[1] }
                    # TODO Presumes that only one variable is passed
                    variable_numbers.collect { |x| new([x.to_i])}
                  end 

                  def self.extend_actualized_composite(x, container, examples, point)
                    cloned_container = container.clone_solution
                    cloned_container.add_statement_at(x, point)
                    cloned_container
                    Cauldron::ActualizedComposite.new(cloned_container, examples)
                  end  

                  def rip2
                    %Q{
                    def function(var0)
                      #{Sorcerer.source(to_sexp(Cauldron::Scope.new(['var0']),[]), indent: true)}
                    end
                    }
                  end

                end
              )
              b.class_eval(Sorcerer.source(sexp_methods, indent: true))
              [b]
            end                 

          end
        )
    
    
    #a = c.new(information, sexp.clone)

    #return a.statement_classes.first        
    return c.new(information, sexp.clone)
  else
    #a = eval(template_name).new(information, sexp.clone)
    return eval(template_name).new(information, sexp.clone) #a.statement_classes.first
  end

  raise StandardError.new('Should not get here')
end

#build_template(instance, dynamic_method) ⇒ Object

TODO Change to build_blue_print



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# File 'lib/cauldron/statement_generator.rb', line 14

def build_template(instance, dynamic_method)
  build_class(instance, dynamic_method)
end

#default_template(instance, dynamic_method) ⇒ Object 



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# File 'lib/cauldron/statement_generator.rb', line 182

def default_template(instance, dynamic_method)
  blue_print = build_class(instance, dynamic_method)
  blue_print.statement_classes.first        
end

#dynamic_template_name(instance, dynamic_method) ⇒ Object 



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# File 'lib/cauldron/statement_generator.rb', line 176

def dynamic_template_name(instance, dynamic_method)
  dynamic_method_name = dynamic_method.to_s.gsub(/\+/,'Add')
  dynamic_name = ('Dynamic'+'_'+instance.class.to_s+'_'+dynamic_method_name.to_s).camelize
  dynamic_name+'Template'
end

#expects_block?(instance, dynamic_method) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cauldron/statement_generator.rb', line 97

def expects_block?(instance, dynamic_method)
  instance.send(dynamic_method).class == Enumerator
end

#method_to_sexp(instance, dynamic_method) ⇒ Object 



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# File 'lib/cauldron/statement_generator.rb', line 34

def method_to_sexp(instance, dynamic_method)

  # Does it expect arguments?
  begin
    instance.send(dynamic_method)
  rescue ArgumentError => e
    
    number_of_arguments = e.message.match(/(\d+)\)/)[1].to_i

    #statement = "scope[@indexes[0]] #{dynamic_method}"
    statement = "scope[@indexes[0]]"

    to_sexp_method = %Q^
      def to_sexp(scope, operators)
        Ripper::SexpBuilder.new(#{statement}).parse
      end
    ^        
    # to_sexp_method = %Q^
    #   def to_sexp(scope, operators)
    #     Ripper::SexpBuilder.new("\#{scope[@indexes[0]]} + \#{constant}").parse 
    #   end
    # ^
    return to_sexp_method
  end

  if instance.send(dynamic_method).class == Enumerator
    %Q^
      def to_sexp(scope, operators)
        scope_var = scope.new_variable!
        scope_var_two = scope.new_variable!
        dynamic_method = '#{dynamic_method}'

        first_variable = 'var'+@indexes[0].to_s
        
        a = "\#{scope_var} = \#{first_variable}.\#{dynamic_method} do |\#{scope_var_two}|"+"\n"
        a += operators.collect {|x| x.content.to_ruby(scope, x.children) }.join("\n")
        a += "\n"+"end"+"\n"
        puts a
        Ripper::SexpBuilder.new(a).parse

      end
    ^
  else
    %Q{
      def to_sexp(scope, operators)
        first_variable = 'var'+@indexes[0].to_s
        [:call,
          [:vcall, [:@ident, first_variable ]],
          :".",
          [:@ident, "#{dynamic_method}"]
        ]
      end        
    }
  end
end

#requires_arguments?(instance, dynamic_method) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cauldron/statement_generator.rb', line 90

def requires_arguments?(instance, dynamic_method)
  instance.send(dynamic_method)
  false
rescue ArgumentError => e
  true
end

#sexp_method_to_desc ⇒ Object 



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# File 'lib/cauldron/statement_generator.rb', line 26

def sexp_method_to_desc
  %Q{
    def to_desc
      to_ruby( Cauldron::Scope.new(['var0']), [] )    
    end
  }      
end

#sexp_method_to_ruby(instance, dynamic_method) ⇒ Object 



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# File 'lib/cauldron/statement_generator.rb', line 18

def sexp_method_to_ruby(instance, dynamic_method)
  %Q{
    def to_ruby(scope, operators)
      Sorcerer.source self.to_sexp(scope, operators)
    end
  }
end

#template_sexp(instance, dynamic_method) ⇒ Object 



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# File 'lib/cauldron/statement_generator.rb', line 124

def template_sexp(instance, dynamic_method)

  res = %Q{

    #{sexp_method_to_ruby(instance, dynamic_method)}

    #{method_to_sexp(instance, dynamic_method)}

    #{sexp_method_to_desc}

    #{branch_method(instance, dynamic_method)}

    def self.instances(histories, composite, examples, insert_points)

      # TEMP
      unless examples.class == ExampleSet
        raise StandardError.new('Examples should be an example')
      end

      # Print out each insertable statements
      scope = examples.scope

      # self.init([0]).to_ruby(scope)
      # - this will print out "var0.chop"

      # Get the variables available at each point
      results = []

      insert_points.each do |point|

        # Find the variables at a particular point
        # TODO Change to test
        contexts = histories.contexts_at(point)
        composites = context_instances(contexts)

        composites.each do |x|
          if contexts.all? do |context|
            x.context_realizable?(context)
          end
            results << extend_actualized_composite(x, composite, examples, point)
          end
        end

      end
      
      results
    end
 
  }
  Ripper::SexpBuilder.new(res).parse
end