1  module ActiveSupport
   2    if RUBY_VERSION >= '1.9'
   3      FrozenObjectError = RuntimeError
   4    else
   5      FrozenObjectError = TypeError
   6    end
   7  end
   8 
   9  # TODO: Turn all this into using the BacktraceCleaner.
  10  class Exception # :nodoc:
  11    def clean_message
  12      Pathname.clean_within message
  13    end
  14 
  15    TraceSubstitutions = []
  16    FrameworkStart = /action_controller\/dispatcher\.rb/.freeze
  17    FrameworkRegexp = /generated|vendor|dispatch|ruby|script\/\w+/.freeze
  18 
  19    def clean_backtrace
  20      backtrace.collect do |line|
  21        Pathname.clean_within(TraceSubstitutions.inject(line) do |result, (regexp, sub)|
  22          result.gsub regexp, sub
  23        end)
  24      end
  25    end
  26 
  27    def application_backtrace
  28      before_framework_frame = nil
  29      before_application_frame = true
  30 
  31      trace = clean_backtrace.reject do |line|
  32        before_framework_frame ||= (line =~ FrameworkStart)
  33        non_app_frame = (line =~ FrameworkRegexp)
  34        before_application_frame = false unless non_app_frame
  35        before_framework_frame || (non_app_frame && !before_application_frame)
  36      end
  37 
  38      # If we didn't find any application frames, return an empty app trace.
  39      before_application_frame ? [] : trace
  40    end
  41 
  42    def framework_backtrace
  43      clean_backtrace.grep FrameworkRegexp
  44    end
  45  end