Class: PryMoves::BacktraceBuilder

Inherits:
Object
  • Object
show all
Defined in:
lib/pry-moves/backtrace_builder.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(frame_manager) ⇒ BacktraceBuilder

Returns a new instance of BacktraceBuilder.



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# File 'lib/pry-moves/backtrace_builder.rb', line 5

def initialize frame_manager
  @frame_manager = frame_manager
  @filter = nil
  @colorize = false
  @lines_numbers = true
  @formatter = PryMoves::Formatter.new
end

Instance Attribute Details

#colorize=(value) ⇒ Object (writeonly)

Sets the attribute colorize

Parameters:

  • value —

    the value to set the attribute colorize to.



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# File 'lib/pry-moves/backtrace_builder.rb', line 3

def colorize=(value)
  @colorize = value
end

#filter=(value) ⇒ Object (writeonly)

Sets the attribute filter

Parameters:

  • value —

    the value to set the attribute filter to.



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# File 'lib/pry-moves/backtrace_builder.rb', line 3

def filter=(value)
  @filter = value
end

#lines_numbers=(value) ⇒ Object (writeonly)

Sets the attribute lines_numbers

Parameters:

  • value —

    the value to set the attribute lines_numbers to.



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# File 'lib/pry-moves/backtrace_builder.rb', line 3

def lines_numbers=(value)
  @lines_numbers = value
end

Instance Method Details

#build_backtrace ⇒ Object 



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# File 'lib/pry-moves/backtrace_builder.rb', line 13

def build_backtrace
  show_all = %w(a all).include?(@filter)
  show_vapid = %w(+ hidden vapid).include?(@filter) || show_all
  result = []
  current_object, vapid_count = nil, 0

  recursion = PryMoves::Recursion::Holder.new

  @frame_manager.bindings.reverse.each do |binding|
    next if !show_all and binding.eval('__FILE__').match PryMoves::Backtrace::filter

    if !show_vapid and binding.hidden
      vapid_count += 1
      next
    end

    if vapid_count > 0
      result << "👽  frames hidden: #{vapid_count}"
      vapid_count = 0
    end

    obj, debug_snapshot = binding.eval '[self, (debug_snapshot rescue nil)]'
    # Comparison of objects directly may raise exception
    if current_object.object_id != obj.object_id
      result << "#{debug_snapshot || @formatter.format_obj(obj)}"
      current_object = obj
    end

    file, line = binding.eval('[__FILE__, __LINE__]')
    recursion.track file, line, result.count, binding.index unless show_vapid
    result << build_line(binding, file, line)
  end

  # recursion.each { |t| t.apply result }

  result << "👽  frames hidden: #{vapid_count}" if vapid_count > 0

  result
end

#objects_of_class(class_pattern) ⇒ Object 



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# File 'lib/pry-moves/backtrace_builder.rb', line 53

def objects_of_class class_pattern
  result = []
  last_object = nil
  class_pattern.downcase!
  @frame_manager.bindings.reverse.each do |binding|
    obj = binding.eval 'self'
    next if !obj.class.to_s.downcase.include?(class_pattern) ||
      last_object.object_id == obj.object_id

    result << "#{line_num binding}#{@formatter.format_obj(obj)}"
    last_object = obj
  end
  result
end