Class: Convict::Jail

Inherits:
Object
  • Object
show all
Defined in:
lib/convict/jail.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(_path) ⇒ Jail

Returns a new instance of Jail.



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# File 'lib/convict/jail.rb', line 4

def initialize(_path)
  @guard = false
  @path = _path
end

Instance Attribute Details

#guard ⇒ Object (readonly)

Returns the value of attribute guard.



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# File 'lib/convict/jail.rb', line 2

def guard
  @guard
end

Instance Method Details

#debug(str) ⇒ Object 



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# File 'lib/convict/jail.rb', line 9

def debug(str)
  return unless ENV["CONVICT_DEBUG"]
  puts str
end

#run ⇒ Object 



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# File 'lib/convict/jail.rb', line 14

def run
  tp = TracePoint.new do |tp|
    debug "  #{@guard} - #{tp.self} - #{tp.defined_class} - #{tp.callee_id} - #{tp.event} - #{tp.method_id}"

    if @guard
      case tp.event
      when :c_call
        case tp.method_id
        when :method_missing
        when :set_encoding
          raise "not IO" unless tp.defined_class == IO
        when :require, :load
          raise "not Kernel" unless tp.defined_class == Kernel
        when :new
        when :initialize
        when :inherited
        when :method_added
        when :singleton_method_added
        when :puts
          debug ">> GUARD OFF"
          @guard = false
        else
          if tp.self.is_a? Exception
            raise tp.self
          else
            raise Convict::Violation, "#{tp.defined_class}.#{tp.method_id}"
          end
        end
      end
    else
      case tp.event
      when :c_call
        case tp.method_id
        when :instance_eval
          debug "  >> CELL LOCKED"
          @guard = true
        end
      when :c_return
        if tp.method_id == :puts
          debug "  >> GUARD ON"
          @guard = true
        end
      end
    end
  end

  contents = File.read @path

  begin
    Convict::Cell.new contents, @path, tp
  rescue Convict::Violation => ex
    puts ""
    puts "VIOLATION: #{ex}"
    exit 1
  rescue => ex
    puts ""
    puts "EXCEPTION:"
    puts ex.message.split("for #<Convict")[0]
    puts "in #{ex.backtrace_locations[1].to_s.split(":in `block").first}"
  else
    #puts "cell value: #{$value}"
  end
end