Contents

module PryStackExplorer
  
  class FrameManager
    include Enumerable
    
    attr_accessor :binding_index
    attr_accessor :bindings

    # @return [Hash] A hash for user defined data
    attr_reader :user

    def initialize(bindings, _pry_)
      self.bindings      = bindings
      self.binding_index = 0
      @pry               = _pry_
      @user              = {}
    end

    # Iterate over all frames
    def each(&block)
      bindings.each(&block)
    end

    # Return a description of the frame (binding)
    # @param [Binding] b The binding.
    # @return [String] A description of the frame (binding).
    def frame_info_for(b)
      b_self = b.eval('self')
      b_method = b.eval('__method__')

      if b_method && b_method != :__binding__ && b_method != :__binding_impl__
        b_method.to_s
      elsif b_self.instance_of?(Module)
        "<module:#{b_self}>"
      elsif b_self.instance_of?(Class)
        "<class:#{b_self}>"
      else
        "<main>"
      end
    end

    # Ensure the Pry instance's active binding is the frame manager's
    # active binding.
    def refresh_frame
      change_frame_to binding_index 
    end

    # @return [Binding] The currently active frame
    def current_frame
      bindings[binding_index]
    end

    # Change active frame to the one indexed by `index`.
    # Note that indexing base is `0`
    # @param [Fixnum] index The index of the frame.
    def change_frame_to(index)

      if index > bindings.size - 1
        @pry.output.puts "Warning: At top of stack, cannot go further!"
      elsif index < 0
        @pry.output.puts "Warning: At bottom of stack, cannot go further!"
      else
        self.binding_index = index
        @pry.binding_stack[-1] = bindings[binding_index]

        @pry.run_command "whereami"
      end
    end
    
  end
end

Version data entries

6 entries across 6 versions & 1 rubygems

Version	Path
pry-stack_explorer-0.2.8pre1	lib/pry-stack_explorer/frame_manager.rb
pry-stack_explorer-0.2.7pre4	lib/pry-stack_explorer/frame_manager.rb
pry-stack_explorer-0.2.7pre3	lib/pry-stack_explorer/frame_manager.rb
pry-stack_explorer-0.2.7pre2	lib/pry-stack_explorer/frame_manager.rb
pry-stack_explorer-0.2.7pre1	lib/pry-stack_explorer/frame_manager.rb
pry-stack_explorer-0.2.6pre2	lib/pry-stack_explorer/frame_manager.rb